Rotating shaft device, folding housing and electronic device

Abstract

The application provides a rotating shaft device, which comprises a rotating shaft assembly, a torsion assembly and an elastic assembly. The rotating assembly comprises a first base and a rotating part, the rotating part is rotatably connected to the first base, and the rotating part comprises a first cam. The torsion assembly comprises a rotating shaft and a rotating shaft mounting part, the axis of the rotating shaft is parallel to the rotating axis between the rotating part and the first base, the rotating shaft mounting part is slidably sleeved on the rotating shaft along the axial direction of the rotating shaft, and the rotating shaft mounting part comprises a first abutting cam. The elastic assembly comprises a first elastic part, the opposite ends of the rotating shaft mounting part abut against the first elastic part and the rotating part respectively, the first elastic part pushes the rotating shaft mounting part so that the first abutting cam and the first cam abut against each other and can rotate, and when the rotating part rotates relative to the rotating shaft mounting part, the first cam abuts against the first abutting cam, and the frictional torsion between the first cam and the first abutting cam limits the rotation of the rotating part. The application also provides a folding shell provided with the rotating shaft device and an electronic device.

Description

Technical Field

[0001] This invention relates to the field of flexible screen support, and more particularly to a pivot device for supporting a flexible screen, a folding housing provided with the pivot device, and an electronic device provided with the folding housing. Background Technology

[0002] With the development of display devices, flexible foldable displays have emerged. Currently, the folding solutions for flexible foldable displays include inward folding and outward folding, and foldable screens are becoming increasingly popular. Foldable screens in related technologies generally use hinge mechanisms for support; however, most hinges currently achieve a hovering effect through damping plates and other mechanisms, which not only increases the number of components but also results in poor hovering performance. Summary of the Invention

[0003] This application provides a pivot device, a folding housing provided with the pivot device, and an electronic device provided with the folding housing.

[0004] This application provides a rotating shaft device, which includes a rotating shaft assembly, a torque assembly, and an elastic assembly. The rotating assembly includes a first base and a rotating member, the rotating member being rotatably connected to the first base and including a first cam. The torque assembly includes a rotating shaft and a rotating shaft mounting member. The axis of the rotating shaft is parallel to the axis of rotation between the rotating member and the first base. The rotating shaft mounting member is slidably sleeved on the rotating shaft along its axial direction and includes a first abutting cam. The elastic assembly includes a first elastic member. One end of the rotating shaft mounting member abuts against the first elastic member, and the other end of the rotating shaft mounting member, away from the first elastic member, abuts against the rotating member. The first elastic member elastically pushes against the rotating shaft mounting member, causing the first abutting cam and the first cam to rotatably abut against each other.

[0005] This application also provides a folding housing, the folding housing including two frames and a rotating shaft device, the rotating shaft device being located between the two frames, with opposite sides of the rotating shaft device respectively connected to the two frames; the rotating shaft device including a rotating shaft assembly, a torque assembly, and an elastic assembly, the rotating assembly including a first base and a rotating member, the rotating member being rotatably connected to the first base, the rotating member including a first cam; the torque assembly including a rotating shaft and a rotating shaft mounting member, the axis of the rotating shaft being parallel to the axis of rotation between the rotating member and the first base, the rotating shaft mounting member being slidably sleeved on the rotating shaft along the axial direction of the rotating shaft, the rotating shaft mounting member including a first abutting cam; the elastic assembly including a first elastic member, one end of the rotating shaft mounting member abutting the first elastic member, the other end of the rotating shaft mounting member away from the first elastic member abutting the rotating member, the first elastic member elastically pushing the rotating shaft mounting member so that the first abutting cam and the first cam rotatably abut against each other.

[0006] This application also provides an electronic device, which includes a pivot device, a flexible screen, and two frames. The pivot device is located between the two frames, and its opposite sides are respectively connected to the two frames. The back of the flexible screen is attached to the front of the pivot device and the front of the housing. The pivot device includes a pivot assembly, a torque assembly, and an elastic assembly. The pivot assembly includes a first base and a rotating member. The rotating member is rotatably connected to the first base. The system includes a first cam; the torque assembly includes a rotating shaft and a rotating shaft mounting member, the axis of the rotating shaft being parallel to the axis of rotation between the rotating member and the first base, the rotating shaft mounting member being slidably sleeved on the rotating shaft along the axial direction of the rotating shaft, and the rotating shaft mounting member including a first abutting cam; the elastic assembly includes a first elastic member, one end of the rotating shaft mounting member abutting against the first elastic member, and the other end of the rotating shaft mounting member away from the first elastic member abutting against the rotating member, the first elastic member elastically pushing against the rotating shaft mounting member so that the first abutting cam and the first cam rotatably abut against each other.

[0007] In the rotating shaft device of the present invention, there is a frictional torque between the rotating component and the rotating shaft mounting component. When there is no external force, the frictional torque can limit the rotating component to remain stationary relative to the first base, thereby keeping the support component in a bent or flattened state, so as to achieve the suspension of the support component and give the electronic device a suspension effect. Attached Figure Description

[0008] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0009] Figure 1 This is a three-dimensional structural diagram of the electronic device in the first embodiment of this application;

[0010] Figure 2 yes Figure 1 An exploded view of the folding housing and flexible screen of the electronic device.

[0011] Figure 3 yes Figure 2 An exploded view of the three-dimensional structure of the folded shell in the diagram;

[0012] Figure 4 yes Figure 3 Enlarged three-dimensional view of the rotating shaft device in the diagram;

[0013] Figure 5 yes Figure 4 An exploded three-dimensional structural diagram of the rotating shaft device in the diagram;

[0014] Figure 6 yes Figure 5 Enlarged view of part of the rotating shaft device in the diagram;

[0015] Figure 7 yes Figure 6 A three-dimensional structural diagram of the rotating shaft device from another perspective;

[0016] Figure 8 yes Figure 6 An exploded three-dimensional structural diagram of the rotating shaft device in the diagram;

[0017] Figure 9 yes Figure 8 A three-dimensional structural diagram of the rotating component from another perspective;

[0018] Figure 10 yes Figure 8 A further exploded three-dimensional structural diagram of the rotating component in the diagram;

[0019] Figure 11 yes Figure 9 A further exploded three-dimensional structural diagram of the rotating component in the diagram;

[0020] Figure 12 yes Figure 10 Enlarged three-dimensional structural diagram of the first base, rotating component, and rotating shaft mounting component of the rotating shaft device;

[0021] Figure 13 yes Figure 12 A three-dimensional structural diagram of the first base, rotating component, and rotating shaft mounting component from another perspective;

[0022] Figure 14 yes Figure 10 A three-dimensional structural diagram of the torque component and the first linkage mechanism of the rotating shaft device;

[0023] Figure 15 yes Figure 14 A three-dimensional structural diagram of the torsion component and the first linkage mechanism from another perspective;

[0024] Figure 16 yes Figure 6 A front view of the rotating shaft device in the diagram;

[0025] Figure 17 yes Figure 6 A three-dimensional sectional view of the rotating shaft device in the middle;

[0026] Figure 18 yes Figure 6 Another perspective sectional view of the rotating shaft device in the middle;

[0027] Figure 19 yes Figure 6 Another three-dimensional sectional view of the rotating shaft device in the middle;

[0028] Figure 20 yes Figure 1 A three-dimensional structural diagram of the folded state of electronic devices in the image;

[0029] Figure 21 yes Figure 20 A three-dimensional structural diagram of the rotating shaft device in the diagram;

[0030] Figure 22 yes Figure 21 A three-dimensional structural diagram of the rotating shaft device from another perspective;

[0031] Figure 23 yes Figure 22 A three-dimensional sectional view of the rotating shaft device in the middle;

[0032] Figure 24 yes Figure 21 A three-dimensional sectional view of the rotating shaft device in the middle;

[0033] Figure 25 yes Figure 21 Another perspective sectional view of the rotating shaft device in the middle;

[0034] Figure 26 This is a three-dimensional structural schematic diagram of the rotating shaft device in the second embodiment of this application;

[0035] Figure 27 yes Figure 26 A three-dimensional structural diagram of the rotating shaft device from another perspective;

[0036] Figure 28 yes Figure 26 An exploded three-dimensional structural diagram of the rotating shaft device in the diagram;

[0037] Figure 29 yes Figure 28 An exploded three-dimensional structural diagram of the rotating shaft device in the diagram;

[0038] Figure 30 yes Figure 28 A further exploded three-dimensional structural diagram of the rotating shaft device in the diagram;

[0039] Figure 31 yes Figure 29 A further exploded three-dimensional structural diagram of the rotating shaft device in the diagram;

[0040] Figure 32 yes Figure 26 A front view of the rotating shaft device in the diagram;

[0041] Figure 33 yes Figure 26 A three-dimensional sectional view of the rotating shaft device in the middle;

[0042] Figure 34 yes Figure 26 Another perspective sectional view of the rotating shaft device in the middle;

[0043] Figure 35 yes Figure 26 Another three-dimensional sectional view of the rotating shaft device in the middle;

[0044] Figure 36 yes Figure 26 A three-dimensional structural diagram of the fully folded rotating shaft device in the middle;

[0045] Figure 37 yes Figure 36 A three-dimensional structural diagram of the rotating shaft device from another perspective;

[0046] Figure 38 yes Figure 37 A three-dimensional sectional view of the rotating shaft device in the middle;

[0047] Figure 39 yes Figure 36 A three-dimensional sectional view of the rotating shaft device in the middle;

[0048] Figure 40 yes Figure 36 Another perspective sectional view of the rotating shaft device in the middle;

[0049] Figure 41 This is a three-dimensional structural schematic diagram of the rotating shaft device in the third embodiment of this application;

[0050] Figure 42 yes Figure 41 A three-dimensional structural diagram of the rotating shaft device from another perspective;

[0051] Figure 43 yes Figure 41 An exploded three-dimensional structural diagram of the rotating shaft device in the diagram;

[0052] Figure 44 yes Figure 42 An exploded three-dimensional structural diagram of the rotating shaft device in the diagram;

[0053] Figure 45 yes Figure 41 A front view of the rotating shaft device in the diagram;

[0054] Figure 46 yes Figure 41 One of the perspective sectional views of the rotating shaft device in the image.

[0055] Main labeling descriptions: 100, Electronic device; 30, Flexible screen; 31, Bendable area; 33, Non-bendable area; 20, Foldable shell; 21, Frame; 211, Front; 213, Back; 214, Side; 215, End face; 216, Receiving groove; 22, 22a, 22b, Rotating shaft device; 23, Rotating assembly; 231, First base; 2312, First arc groove; 2313, Alternating groove; 2314, Guide rail; 2315, Guide groove; 2316, Abutment surface; 2317, Second anti-slip part; 2318, Connecting hole; 233, Rotating component; 2330, First cam; 2331, First anti-slip part; 2332, First arc rail; 2333, First rotating part; 2334, First connecting hole; 2335. Second rotating part; 2336. Lug; 2337. Adjusting rod; 234. Connecting piece; 2340. Connecting rod; 2342. Connecting shaft; 2343. Adapter groove; 2345. Second connecting hole; 2346. First guide groove; 2347. Second arc rail; 2348. Second guide groove; 24. Elastic component; 241. First elastic element; 243. Second elastic element; 25. 25a, 25b. Torque component; 250. Second rotating shaft; 2501. First rotating shaft section; 2503. Second rotating shaft section; 2505. Third rotating shaft section; 251. Rotating shaft mounting piece; 2510. First abutting cam; 2511. Mounting block; 2513. Abutting rod; 2514. Abutting hole; 2515. Guide hole; 2516, Guide groove; 2517, Stop surface; 252, First torque member; 2520, First rotating part; 2521, First rotating cylinder; 2522, First shaft hole; 2523, Second abutting cam; 2524, First protrusion; 2525, First connecting part; 2526, First recess; 2527, First guide rail; 2528, Second adjusting rod; 253, First rotating shaft; 2531, First shaft; 2533, Second shaft; 2535, Third shaft; 254, First abutting member; 2540, Second cam; 2541, First abutting cylinder; 2543, Third protrusion; 2545, Third recess; 2546, First connecting part; 2548, First guide hole; 257, Second abutting member; 2570, Third cam; 2571, Second abutment cylinder; 2572, Fourth shaft hole; 2576, Second connecting part; 2578, Second guide hole; 28, Support assembly; 280, Middle support member; 281, Side support member; 2812, Second arc groove; 255, Second base; 2551, Second seat body; 2553, First connecting plate; 2552, Connecting hole; 2554, First abutment surface; 2556, Third shaft hole; 2557, First mounting hole; 256, Second torque member; 2560, Second rotating part; 2561, Second rotating cylinder; 2562, Second shaft hole; 2563, Third abutment cam; 2564, Second protrusion; 2565, Second connecting part; 2566, Second recess;2567. Second guide rail; 258. Third base; 2581. Third seat body; 2583. Second connecting plate; 2584. Second abutment surface; 2586. Fifth shaft hole; 2587. Second mounting hole; 26. First linkage assembly; 261. First gear; 263. First driven gear set; 2630. First driven gear; 2631. First connecting shaft; 2631a. Connecting section; 2631b. Guide section; 2631c. Connecting section; 2632. Sleeve; 26a. Second linkage assembly; 26 1a. Second gear; 263a. Second driven gear set; 2730. Second driven gear; 2731. Second connecting shaft; 259. Third torque member; 2590. Third rotating part; 2591. Third rotating cylinder; 2592. Sixth shaft hole; 2593. Fourth abutting cam; 2594. Fifth protrusion; 2595. Third connecting part; 2596. Fifth recess; 26b. Third linkage assembly; 261b. Third gear; 263b. Third driven gear set; 29. ​​Back cover; 290. Receiving slot. Detailed Implementation

[0056] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0057] Furthermore, the following descriptions of various embodiments are based on the accompanying illustrations and are used to illustrate specific embodiments that can be implemented in this application. Directional terms used in this application, such as "up," "down," "front," "back," "left," "right," "inner," "outer," and "side," are merely for reference to the accompanying illustrations. Therefore, the directional terms used are for better and clearer explanation and understanding of this application, and are not intended to indicate or imply that the referred device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0058] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "connected," "linked," and "set on" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0059] Please refer to the following: Figures 1 to 9The electronic device 100 in the first embodiment of the present invention includes a folding housing 20 and a flexible screen 30 disposed on the folding housing 20. The flexible screen 30 can be a flexible display screen, a flexible touch screen, a flexible touch display screen, or other flexible components with corresponding functions, or a flexible component fixedly attached to a flexible support plate, such as a flexible display screen or a flexible touch screen attached to a flexible steel plate. The flexible screen 30 is folded or flattened along with the folding housing 20. The folding housing 20 includes two frames 21 and a pivot device 22 connecting the two frames 21. The two frames 21 can be folded or flattened through the pivot device 22. The flexible screen 30 includes a bendable area 31 corresponding to the pivot device 22, and two non-bendable areas 33 connected to the opposite sides of the bendable area 31. The back of the flexible screen 30 is attached to the front of the pivot device 22 and the front of the two frames 21. Specifically, the backs of the two non-bending areas 33 of the flexible screen 30 are fixedly connected to the fronts of the two frames 21, and the back of the bendable area 31 is attached to the front of the pivot device 22. The bendable area 31 of the flexible screen 30 can be folded or flattened with the pivot device 22. The rotating shaft device 22 includes a rotating assembly 23, a torque assembly 25, an elastic assembly 24, and a support assembly 28. The rotating assembly 23 includes a first base 231, a rotating member 233, and a connecting member 234. One end of the rotating member 233 is rotatably connected to the first base 231, and the other end of the rotating member 233 away from the first base 231 is rotatably connected to the connecting member 234. The rotating member 233 includes a first cam 2330. The torque assembly 25 includes a rotating shaft and a rotating shaft mounting member 251. The axis of the rotating shaft is parallel to the axis of rotation between the rotating member 233 and the first positioning seat 231. The rotating shaft mounting member 251 slides along the axial direction of the rotating shaft. The rotating shaft is movably fitted with a rotating shaft. The rotating shaft mounting component 251 includes a first abutting cam 2510; the elastic component 24 includes a first elastic element 241. One end of the rotating shaft mounting component 251 abuts against the first elastic element 241, and the other end of the rotating shaft mounting component 251 away from the first elastic element 241 abuts against the rotating component 233. The first elastic element 241 provides a pre-elastic force to push against the rotating shaft mounting component 251. The first elastic element 241 elastically pushes against the rotating shaft mounting component 251, causing the first abutting cam 2510 and the first cam 2330 to rotatably abut against each other. The side of the rotating component 233 away from the rotating shaft mounting component 251 rotatably abuts against the first base 231. When the rotating component 233 rotates relative to the first base 231, the first cam 2330 of the rotating component 233 rotatably abuts against the first abutting cam 2510. The frictional torque between the first cam 2330 and the first abutting cam 2510 limits the rotation of the rotating component 233 relative to the first base 231. The support component 28 is connected to the front of the rotating component 23 and the torque component 25. The support component 28 is folded or flattened by the rotation of the rotating component 233 relative to the first base 231. The bendable area 31 of the flexible screen 30 is bent or flattened along with the support component 28.

[0060] like Figure 10 and Figure 11 As shown, further, the rotating shaft mounting member 251 is slidably connected to the first base 231 along the axial direction of the rotating shaft. The first elastic member 241 elastically pushes the rotating shaft mounting member 251 against the rotating member 233, causing the side of the rotating member 233 away from the rotating shaft mounting member 251 to abut against the first base 231. When the rotating member 233 rotates relative to the first base 231, there is a frictional torque between the rotating member 233 and the rotating shaft mounting member 251, and at the same time, there is a frictional resistance between the rotating member 233 and the first base 231. Specifically, the side of the rotating member 233 away from the rotating shaft mounting member 251 abuts against the first base 231, and the first abutting cam 2510 and the first cam 2330 rotatably abut against each other. When the rotating member 233 rotates relative to the first base 231, there is a frictional torque between the first abutting cam 2510 and the first cam 2330, and at the same time, there is a frictional resistance between the rotating member 233 and the first base 231, thereby limiting the rotation of the rotating member 233 relative to the first base 231 and the rotating shaft mounting member 251. Preferably, a first anti-slip portion 2331 is provided on the side of the rotating member 233 facing away from the rotating shaft mounting member 251. The first anti-slip portion 2331 can be, but is not limited to, a protrusion, hole, or rough surface provided on the rotating member 233. In this embodiment, the first anti-slip portion 2331 on the side of the rotating member 233 facing away from the rotating shaft mounting member 251 is a plurality of anti-slip holes, which can increase the frictional resistance between the rotating member 233 and the first base 231. In other embodiments, an anti-slip portion can also be provided on the first base 231 corresponding to the first anti-slip portion 2331 of the rotating member 233.

[0061] In this embodiment, the front side refers to the side facing the same direction as the light-emitting surface of the flexible screen 30, and the back side refers to the side facing away from the light-emitting surface of the flexible screen 30. The electronic device 100 is, for example, but not limited to, mobile phones, tablets, monitors, LCD panels, OLED panels, televisions, smartwatches, VR headsets, automotive displays, and any other products and components with display functions. In the description of this embodiment, "connection" includes both direct and indirect connections. For example, a connection between A and B includes a direct connection between A and B or a connection through a third element C or more other elements. Connections also include integrated connections and non-integrated connections. An integrated connection means that A and B are formed and connected as a single unit, while a non-integrated connection means that A and B are not formed and connected as a single unit.

[0062] In the electronic device 100 of the present invention, the support assembly 28 of the rotating shaft device 22 is disposed on the rotating assembly 23 and the torque assembly 25. The rotating member 233 is rotatably connected between the first base 231 and the support assembly 28. The rotating shaft mounting member 251 is slidably connected to the first base 231 along the axial direction of the rotating shaft. The rotating member 233 and the rotating shaft mounting member 251 are rotatably supported by the first cam 2330 and the first abutting cam 2510. The first elastic member 241 elastically pushes the rotating shaft mounting member 251 against the rotating member 233, so that the rotating member 233 and the first base 231 are rotatably supported. When the rotating member 233 rotates relative to the first base 231, the first cam 2330 of the rotating member 233 rotatably abuts the first abutting cam 2510 of the rotating shaft mounting member 251, causing the rotating shaft mounting member 251 to move along the axial direction of the rotating shaft and compress the first elastic member 241, so that the first elastic member 241 elastically deforms. At this time, there is a frictional torque between the rotating component 233 and the rotating shaft mounting component 251, and a frictional resistance between the rotating component 233 and the first base 231. Without external force, this frictional torque and frictional resistance can limit the rotating component 233 to remain stationary relative to the first base 231, thereby keeping the support assembly 28 in a bent or flattened state, achieving the hovering of the support assembly 28 and giving the electronic device 100 a hovering effect. Secondly, the hovering effect of the rotating shaft device 22 is achieved through the frictional torque between the rotating component 233 and the rotating shaft mounting component 251, and the frictional resistance between the rotating component 233 and the first base 231... The suspension effect of the pivot device 22 is achieved by the frictional resistance between the components. In addition, the first elastic element 241 elastically pushes the pivot mounting part 251 against the rotating part 233 so that the rotating part 233 abuts against the first base 231, making the pivot device 22 compact and reducing its volume. This reduces the internal space occupied by the pivot device 22 in the folding housing 20, which is not only beneficial for the layout of other components such as the motherboard or battery, but also for miniaturization. Furthermore, the pivot device 22 has a simple structure, low manufacturing cost, and high reliability of the connection between the components, thus improving the overall strength of the device.

[0063] like Figures 4-11As shown, in this embodiment, the rotating assembly 23 includes two first bases 231 and two connecting members 234. The two first bases 231 are spaced apart from each other along the axial direction of the rotating shaft. The torque assembly 25 is disposed between the two first bases 231, that is, the two first bases 231 are respectively located at opposite ends of the torque assembly 25. Each first base 231 has a rotating member 233 on each opposite side, that is, the two rotating members 233 are rotatably connected to the opposite sides of the first base 231. The torque assembly 25 includes two rotating shaft mounting members 251. The rotating shaft of the torque assembly 25 includes a pair of parallel and spaced first rotating shafts 253. The two rotating shaft mounting members 251 are slidably connected to the opposite ends of the pair of first rotating shafts 253 along the axial direction of the first rotating shafts 253. The opposite sides of the two rotating shaft mounting members 251 are slidably connected to the two first bases 231 along the axial direction of the first rotating shafts 253. The rotating shaft mounting component 251 is provided with two first abutting cams 2510 corresponding to the first cams 2330 of the two rotating components 233 on the first base 231. The elastic component 24 includes a pair of first elastic elements 241 and a pair of second elastic elements 243. The pair of first elastic elements 241 elastically push against one of the rotating shaft mounting members 251, such that the two first abutting cams 2510 of the rotating shaft mounting member 251 rotatably abut against the first cams 2330 of the corresponding two rotating members 233, so that each rotating member 233 rotatably abuts against the corresponding first base 231. The pair of second elastic elements 243 elastically push against the other rotating shaft mounting member 251, such that the two first abutting cams 2510 of the rotating shaft mounting member 251 rotatably abut against the first cams 2330 of the corresponding two rotating members 233, so that each rotating member 233 rotatably abuts against the corresponding first base 231. That is, the two rotating members 233 provided on each first base 231 rotatably abut against the corresponding rotating shaft mounting member 251. Two connectors 234 are disposed on opposite sides of the torque assembly 25. The ends of two rotating members 233 on each first base 231, away from the first base 231, are rotatably connected to the two connectors 234. The connectors 234 are connected to the support assembly 28. The support assembly 28 includes a central support member 280 connected to the center of the front of the rotating assembly 23 and two side support members 281 located on opposite sides of the central support member 280. The central support member 280 is connected to the rotating assembly 23, and the two side support members 281 are respectively connected to the rotating assembly 23 and the torque assembly 25. The two side support members 281 are bent or flattened relative to the central support member 280 by the rotating assembly 23 and the torque assembly 25, thereby realizing the folding or flattening of the support assembly 28.When the support component 28 is in a flattened state, the front surfaces of the two side support members 281 and the front surface of the middle support member 280 are coplanar, and the bendable area 31 of the flexible screen 30 is connected to the front surface of the middle support member 280 and the front surface of the side support members 281. When the two side support members 281 are in a folded state, the front surfaces of the two side support members 281 and the front surface of the middle support member 280 form a space with a teardrop or U-shaped cross-section, so that the bendable area 31 of the flexible screen 30 is bent into a teardrop or U-shape. In this embodiment, the bendable area 31 of the flexible screen 30 is bent into a teardrop shape. When the rotating member 233 rotates relative to the first base 231, the first cam 2330 of the rotating member 233 rotatably pushes against the corresponding first abutting cam 2510, causing the rotating shaft mounting member 251 to move along the axial direction of the first rotating shaft 253 to compress the first elastic member 241. At this time, the frictional torque between the opposing first cam 2330 and the first abutting cam 2510 and the frictional resistance between the rotating member 233 and the corresponding first base 231 are used to limit the rotation of the rotating member 233 relative to the first base 231 and the rotating shaft mounting member 251. Under the condition of no external force, the rotating member 233 remains stationary relative to the first base 231 and the rotating shaft mounting member 251, so as to realize the hovering of the rotating shaft device 22, thereby realizing the hovering of the electronic device 100.

[0064] In this embodiment, the hovering effect of the rotating shaft device 22 is achieved through the frictional torque between the two rotating members 233 on the two first bases 231 and the corresponding rotating shaft mounting members 251, as well as the frictional resistance between the two rotating members 233 on each first base 231 and the corresponding first base 231. Therefore, the hovering effect of the rotating shaft device 22 is stable. In addition, the two first elastic members 241 elastically push one of the rotating shaft mounting members 251 against the corresponding two rotating members 233 so that the two rotating members 233 abut against the corresponding first base 231, and the two second elastic members 243 elastically push the other rotating shaft mounting member 251 against the corresponding two rotating members 233 so that the two rotating members 233 abut against the corresponding first base 231. The rotating component 233 abuts against the corresponding first base 231, thereby making the structure of the rotating shaft device 22 compact and reducing its volume. This reduces the internal space occupied by the rotating shaft device 22 in the folding housing 20, which is beneficial not only for the layout of other components such as the motherboard or battery, but also for miniaturization. Furthermore, since the two first bases 231 of the rotating shaft device 22 have the same structure, the four rotating components 233 have the same structure, the two rotating shaft mounting components 251 have the same structure, and the two connecting components 234 have the same structure, each component can be mass-produced, reducing manufacturing costs. Moreover, the structure of the rotating shaft device 22 is simple, the connection between each component is highly reliable, and the overall strength of the machine is improved.

[0065] like Figures 10-13As shown, the rotation axis between the rotating member 233 and the first base 231 is parallel to the axis of the first rotating shaft 253. During the rotation of the rotating member 233 relative to the first base 231, both the rotating member 233 and the rotating shaft mounting member 251 can move along the axial direction of the first rotating shaft 253. The first elastic member 241 and the second elastic member 243 are both squeezed and stretched along the axial direction of the first rotating shaft 253. The two rotating shaft mounting members 251 respectively have a resisting force on the rotating member 233 on the two first bases 231 in the axial direction of the first rotating shaft 253. If the elastic thrust of each first elastic element 241 along the axial direction of the first rotating shaft 253 is F1, and the elastic thrust of each second elastic element 243 along the axial direction of the first rotating shaft 253 is F2; ​​when the rotating shaft device 22 is in the flattened state, the abutting force of each rotating shaft mounting member 251 on the corresponding rotating member 233 is 2F1, and the abutting force of the other rotating shaft mounting member 251 on the corresponding rotating member 233 is 2F2. Preferably, the first elastic element 241 and the second elastic element 243 are the same spring. Therefore, the abutting forces of the two rotating shaft mounting members 251 on the corresponding rotating members 233 are the same, and the two rotating members 233 on each first base 231 have the same abutting force on the first base 231 in the axial direction parallel to the first rotating shaft 253.

[0066] The rotating component 233 is connected to the corresponding first base 231 via a first arc groove 2312 and a first arc rail 2332. The first arc groove 2312 is located on one of the first base 231 and the rotating component 233, and the first arc rail 2332 is located on the other of the rotating component 233 and the first base 231. The axis of the first arc groove 2312 is collinear with the axis of the first arc rail 2332, and the axis of the first arc rail 2332 is collinear with the axis of rotation between the rotating component 233 and the first base 231. In this embodiment, the first arc groove 2312 is provided on both opposite sides of the front of the first base 231, and the rotating component 233 is provided with a first arc rail 2332 corresponding to the first arc groove 2312 at the end away from the connecting component 234, so that the rotating component 233 and the first base 231 can rotate relative to each other along the first arc groove 2312.

[0067] In some embodiments, the first arc groove may also be provided on the rotating member 233, and the arc rail may also be provided on the first base 231, with the arc rail slidably accommodated in the arc groove. Specifically, the rotating member 233 has an arc groove at the end away from the connecting member 234, and the first base 231 has an arc rail corresponding to the arc groove.

[0068] like Figures 4-5 and Figures 10-13As shown, in this embodiment, the first base 231 includes two first seat bodies that can be interlocked, and the end of the rotating member 233 away from the connecting member 234 is clamped between the two first seat bodies. Specifically, the first base 231 is a rectangular block, and first arc grooves 2312 are respectively provided on the two opposite sides of the front of the first base 231. The axis lines of the two first arc grooves 2312 of the first base 231 are parallel. The first base 231 has a clearance groove 2313 on the side of each first arc groove 2312 away from the other first arc groove 2312, and the clearance groove 2313 is used to avoid the rotating member 233. The rotating shaft mounting component 251 and the corresponding first base 231 are slidably connected by a guide rail and a guide groove. The extension direction of the guide groove is parallel to the axial direction of the first rotating shaft 253. The guide rail is provided on one of the first base 231 and the rotating shaft mounting component 251, and the guide groove is provided on the other of the rotating shaft mounting component 251 and the first base 231. In this embodiment, the first base 231 has a guide rail 2314 at one end facing the rotating shaft mounting component 251, and the rotating shaft mounting component 251 has a guide groove corresponding to the guide rail 2314. The guide rail 2314 is slidably accommodated in the guide groove. Preferably, the guide rail 2314 is provided at the middle of the end face of the first base 231 facing the rotating shaft mounting component 251. The first base 231 has a guide groove 2315 at one end near the guide rail 2314. The guide groove 2315 communicates with the first arc groove 2312 along the axial direction of the first rotating shaft 253, so that the guide groove 2315 and the first arc groove 2312 are connected. When the first abutting cam 2510 of the rotating shaft mounting member 251 is housed in the guide groove 2315 and the first arc rail 2332 is housed in the corresponding first arc groove 2312, the first abutting cam 2510 abuts against the corresponding first cam 2330, and the rotating member 233 abuts against the first arc rail 2332 with the side away from the rotating shaft mounting member 251 and the first base 231. In this embodiment, the first base 231 has guide grooves 2315 on both sides of the guide rail 2314 opposite to the end of the rotating shaft mounting member 251. The two guide grooves 2315 extend along the axis parallel to the first arc groove 2312 into the two first arc grooves 2312, that is, the two guide grooves 2315 are respectively connected to the two first arc grooves 2312. The first base 231 has an abutment surface 2316 at the end of each first arc groove 2312 away from the guide groove 2315. The first abutting cam 2510 can abut against the first cam 2330 so that the side of the first arc rail 2332 away from the rotating shaft mounting member 251 abuts against the corresponding abutment surface 2316. When the rotating member 233 rotates relative to the first base 231, there is frictional resistance between the side of the first arc rail 2332 away from the first cam 2330 and the abutment surface 2316. Preferably, a second anti-slip portion 2317 is provided on the contact surface 2316 of the first base 231. The second anti-slip portion 2317 may be, but is not limited to, a protrusion, hole or rough surface provided on the rotating member 233.In this embodiment, the second anti-slip portion 2317 on the abutment surface 2316 of the first base 231 consists of multiple anti-slip holes, which can increase the frictional resistance between the rotating component 233 and the first base 231. The front side of the first base 231 is provided with multiple connecting holes 2318, two of which are located at the end of the first base 231 away from the guide rail 2314, and the other connecting hole 2318 is located on the front side of the guide rail 2314.

[0069] The rotating component 233 includes a first rotating part 2333 and a second rotating part 2335 connected to the first rotating part 2333. The first rotating part 2333 is rotatably connected to the first base 231, and the second rotating part 2335 is rotatably connected to the connecting component 234. Specifically, the second rotating part 2335 and the connecting component 234 are connected by a connecting shaft and a connecting hole. The connecting shaft is located on one of the second rotating part 2335 and the connecting component 234, and the connecting hole is located on the other of the second rotating part 2335 and the connecting component 234. In this embodiment, the end of the second rotating part 2335 away from the first rotating part 2333 is provided with two mutually spaced lugs 2336, and a clearance groove is formed between the two lugs 2336. The two lugs 2336 are provided with a first connecting hole 2334 along the axial direction parallel to the first rotating shaft 253, and the connecting component 234 is provided with a connecting shaft passing through the first connecting hole 2334. Preferably, the end of the lug 2336 facing away from the first rotating part 2333 is provided as an arc surface to facilitate the rotation of the rotating part 233 relative to the connecting part 234. The first cam 2330 and the first arc track 2332 are respectively protruding at opposite ends of the first rotating part 2333. Each rotating part 233 has a first adjusting rod 2337 at the end away from the first base 231, and the axis of the first adjusting rod 2337 is parallel to the axis of the first rotating shaft 253; the back of the side support 281 is provided with a first adjusting groove corresponding to the first adjusting rod 2337, and the first adjusting rod 2337 is rotatably inserted into the corresponding first adjusting groove; when the rotating part 233 rotates relative to the first base 231, the first adjusting rod 2337 slides along the corresponding first adjusting groove.

[0070] Please refer to the following: Figures 6-11The connector 234 includes a rectangular connecting rod 2340 and two connecting shafts 2342 disposed at opposite ends of the connecting rod 2340. The ends of two rotating members 233 on the same side of the torque assembly 25, away from the corresponding first base 231, are rotatably connected to opposite ends of the connecting rod 2340 via the two connecting shafts 2342. Specifically, the front of the connecting rod 2340 has two spaced-apart transition grooves 2343 at opposite ends, and second connecting holes 2345 at opposite ends. Each second connecting hole 2345 extends axially parallel to the first rotating shaft 253 and communicates with the corresponding connecting groove 2343. The two second connecting holes 2345 on each connecting rod 2340 are coaxial. The middle of the connector 234 has a first guide groove 2346, which extends axially perpendicular to the first rotating shaft 253 and passes through opposite sides of the connector 234. The connecting member 234 and the corresponding side support member 281 are rotatably connected by a second arcuate rail and a second arcuate groove. The second arcuate rail is provided on one of the connecting member 234 and the side support member 281, and the second arcuate groove is provided on the other. In this embodiment, the connecting member 234 has a second arcuate rail 2347 at each opposite end, the axis of the second arcuate rail 2347 is parallel to the axial direction of the first rotating shaft 253, and the two second arcuate rails 2347 are coaxial. The side support member 281 has a second arcuate groove 2812 at each opposite end, and the two second arcuate rails 2347 are rotatably accommodated in the two second arcuate grooves 2812. In other embodiments, the side support member 281 has a second arcuate rail at each opposite end, and the connecting member 234 has a second arcuate groove at each opposite end, and the two second arcuate rails are rotatably accommodated in the two second arcuate grooves. The back of the connector 234 is provided with multiple snap-fit ​​posts and positioning holes, and the connector 234 is fixedly connected to the frame 21 through the multiple snap-fit ​​posts and positioning holes.

[0071] like Figures 5-11 and Figures 14-15As shown, the rotating shaft mounting component 251 includes a mounting block 2511 and two abutting rods 2513 located at opposite ends of the mounting block 2511. The two abutting rods 2513 are located on the same side of the mounting block 2511, and each abutting rod 2513 has a first abutting cam 2510 at its end away from the mounting block 2511. The mounting block 2511 has abutting holes 2514 at opposite ends of its side facing away from the first abutting cam 2510. The two abutting holes 2514 are used to accommodate the ends of a pair of first rotating shafts 253. The ends of the pair of first rotating shafts 253 are respectively inserted into the two abutting holes 2514 of the rotating shaft mounting component 251 and can push the rotating shaft mounting component 251 to move axially along the first rotating shafts 253. Preferably, the two abutting holes 2514 extend along the axial direction of the two abutting rods 2513. The mounting block 2511, facing away from the first abutting cam 2510, has two guide holes 2515 between the two abutting holes 2514. In this embodiment, the axis of the two abutting holes 2514 and the axis of the two guide holes 2515 are in the same plane. In some embodiments, the axis of the two abutting holes 2514 is coplanar, the axis of the two guide holes 2515 is coplanar, and the plane containing the axis of the two abutting holes 2514 is parallel to the plane containing the axis of the two guide holes 2515. The mounting block 2511 and the two abutting rods 2513 form a guide groove 2516, and the guide rail 2314 of the first base 231 is slidably inserted into the guide groove 2516; preferably, the guide groove 2516 extends axially parallel to the first rotating shaft 253. The abutting rod 2513 has a stop surface 2517 at the end away from the mounting block 2511.

[0072] The torque assembly 25 also includes a first torque member 252 and a first abutment member 254. The first torque member 252 is rotatably connected to the rotating shaft, that is, the first torque member 252 is rotatably connected to the first rotating shaft 253. The first abutment member 254 is slidably sleeved on the rotating shaft along the axis of the rotating shaft. The first abutment member 254 is located between the first torque member 252 and the first elastic member 241. The first elastic member 241 elastically abuts against the first abutment member 254 and against the first torque member 252. When the first torque member 252 rotates around the corresponding rotating shaft, the first torque member 252 pushes the first abutment member 254 to move along the axial direction of the rotating shaft to squeeze the first elastic member 241. The frictional torque between the first torque member 252 and the first abutment member 254 and the frictional torque between the first cam 2330 and the first abutment cam 2510 are used to limit the first torque member 252 and the rotating member 233. In this embodiment, the torque assembly 25 includes a pair of first torque members 252, which are rotatably mounted on a pair of first rotating shafts 253. A first abutment member 254 is mounted on the pair of first rotating shafts 253 along the axial direction of the first rotating shafts 253. The first abutment member 254 is located between the two first elastic members 241 and the two first torque members 252. When the two torque members 252 rotate around the two first rotating shafts 253, the two first torque members 252 push the first abutment member 254 together to move along the axial direction of the first rotating shafts 253 to squeeze the two first elastic members 241. The frictional torque between the two first torque members 252 and the first abutment member 254 and the frictional torque between the first cam 2330 of the two rotating members 233 and the corresponding first abutment cam 2510 limit the rotation of the first torque members 252 and the rotating members 233.

[0073] The first torque member 252 includes a first rotating part 2520 rotatably connected to the first rotating shaft 253, a second abutting cam 2523 disposed on the first rotating part 2520, and a first connecting part 2525 connected to the first rotating part 2520. The second abutting cam 2523 is rotatably sleeved on the corresponding first rotating shaft 253. The first abutting member 254 includes two second cams 2540 slidably sleeved on a pair of first rotating shafts 253. The pair of first rotating shafts 253 pass through the second abutting cams 2523 of the pair of first torque members 252 and the two second cams 2540 of the first abutting member 254. The two second abutting cams 2523 abut against the two second cams 2540 respectively in a rotatable manner. Specifically, the first rotating part 2520 is provided with a first shaft hole 2522 along the axial direction of the first rotating shaft 253, and the first rotating shaft 253 passes through the first shaft hole 2522; the end of the first connecting part 2525 away from the first rotating part 2520 is slidably connected to the connecting member 234 and the side support member 281; the second abutting cam 2523 is provided at the end of the first rotating part 2520 facing the first abutting member 254, the axis of the second abutting cam 2523 is collinear with the axis of the first shaft hole 2522, and the second abutting cam 2523 and the second cam 2540 cooperate to abut against each other. The first elastic member 241 is provided in a compressed state between the first abutting member 254 and the corresponding rotating shaft mounting member 251, and the first elastic member 241 provides elastic force for the mutual abutment between the first abutting member 254 and the first torque member 252 and the mutual abutment between the rotating shaft mounting member 251 and the corresponding first base 231.

[0074] The first rotating part 2520 is a first rotating cylinder 2521 sleeved on the first rotating shaft 253. The second abutting cam 2523 is located at the end of the first rotating cylinder 2521 facing the first abutting member 254. The axis of the second abutting cam 2523 is collinear with the axis of the first rotating cylinder 2521. The first abutting member 254 also includes two first abutting cylinders 2541 respectively sleeved on the two first rotating shafts 253 and a first connecting part 2546 connecting the two first abutting cylinders 2541. The second cam 2540 is located at the end of the first abutting cylinder 2541 facing the first torque member 252. The axis of the second cam 2540 is collinear with the axis of the first abutting cylinder 2541. Specifically, the second abutting cam 2523 includes a concave-convex surface located on one end of the first rotating cylinder 2521 facing the first abutting member 254. This concave-convex surface includes a first protrusion 2524 and a first recess 2526, which are arranged sequentially at intervals along the circumference of the first rotating cylinder 2521. The number of first protrusions 2524 and the number of first recesses 2526 can be set as needed. For example, the second abutting cam 2523 may include one first protrusion 2524 and one first recess 2526, two first protrusions 2524 and two first recesses 2526, three first protrusions 2524 and three first recesses 2526, or four first protrusions 2524 and four first recesses 2526, etc. In this embodiment, the second abutting cam 2523 includes three first protrusions 2524 and three first recesses 2526 arranged circumferentially along the first rotating cylinder 2521. Each first abutting cylinder 2541 has a second cam 2540 at one end facing the first torque member 252; that is, the second cam 2540 is located at the end of the first abutting cylinder 2541 away from the first elastic member 241. The second cam 2540 includes a concave-convex surface at one end of the first abutting cylinder 2541 facing the first torque member 252. This concave-convex surface includes a third protrusion 2543 and a third recess 2545, which are arranged sequentially at intervals along the circumference of the first abutting cylinder 2541. The number of third protrusions 2543 and the number of third recesses 2545 can be set as needed. For example, the second cam 2540 may include one third protrusion 2543 and one third recess 2545, two third protrusions 2543 and two third recesses 2545, three third protrusions 2543 and three third recesses 2545, or four third protrusions 2543 and four third recesses 2545, etc. In this embodiment, the second cam 2540 includes three third protrusions 2543 and three third recesses 2545 arranged circumferentially along the first abutment cylinder 2541.

[0075] The second shaft hole 2562 of the first supporting cylinder 2541 is a through hole for the second cam 2540. The first connecting portion 2546 is provided with mutually spaced first guide holes 2548, which are parallel to the second shaft holes 2562. In this embodiment, the axis of the two second shaft holes 2562 and the axis of the two first guide holes 2548 are located in the same plane. In some embodiments, the axis of the two second shaft holes 2562 is coplanar, the axis of the two first guide holes 2548 is coplanar, and the plane containing the axis of the two first guide holes 2548 is parallel to the plane containing the axis of the two second shaft holes 2562. Preferably, the opposite end faces of the first supporting member 254 form arc surfaces to facilitate the folding or unfolding of the rotating shaft device 22.

[0076] The first torque member 252 and the corresponding connecting member 234 are slidably connected by a guide groove and a guide rail. The guide groove is provided on one of the connecting member 234 and the first torque member 252, and the guide rail is provided on the other. In this embodiment, the connecting rod 2340 of the connecting member 234 is provided with a first guide groove 2346 along an axial direction perpendicular to the first rotating shaft 253. The first connecting portion 2525 of the first torque member 252 is provided with first guide rails 2527 on opposite sides. The first guide rails 2527 are slidably inserted into the first guide grooves 2346 of the corresponding connecting member 234. Specifically, the first connecting portion 2525 includes two parallel and spaced extension bars. Each extension bar extends along an axial direction perpendicular to the first rotating shaft 253, and the side of each extension bar opposite to the other extension bar is provided with a first guide rail 2527. One of the extension bars is provided with a second adjusting rod 2528 on the side opposite to the first guide rail 2527. The axis of the second adjusting rod 2528 is parallel to the axis of the first rotating shaft 253. The back of the side support member 281 is provided with a second adjusting groove corresponding to the second adjusting rod 2528. The second adjusting rod 2528 is rotatably inserted into the corresponding second adjusting groove. When the rotating member 233 rotates relative to the first base 231, the second adjusting rod 2528 slides along the corresponding second adjusting groove.

[0077] The first rotating shaft 253 includes a first shaft 2531, a second shaft 2533, and a third shaft 2535 connected in sequence. The first shaft 2531, the second shaft 2533, and the third shaft 2535 are coaxial. The outer diameters of the first shaft 2531 and the third shaft 2535 are both smaller than the outer diameter of the second shaft 2533. The outer diameter of the third shaft 2535 is smaller than the inner diameter of the abutment hole 2514 of the rotating shaft mounting part 251. The outer diameter of the second shaft 2533 is larger than the inner diameter of the abutment hole 2514. The axial length of the first shaft 2531 is greater than the axial length of the second shaft 2533, and the axial length of the second shaft 2533 is greater than the axial length of the third shaft 2535. The outer diameter of the second shaft 2533 is slightly smaller than or equal to the inner diameter of the second elastic element 243, which enables the second elastic element 243 to be stably fitted onto the second shaft 2533 and prevents the second elastic element 243 from shaking on the second shaft 2533.

[0078] The first elastic element 241 is clamped between the first abutment 254 and one of the rotating shaft mounting members 251, and the second elastic element 243 is clamped between the other rotating shaft mounting member 251 and a pair of first torque members 252. In this embodiment, the torque assembly 25 further includes a second base 255, which is slidably sleeved on the pair of first rotating shafts 253 along the axial direction of the first rotating shaft 253. The second base 255 abuts against the side of the pair of first torque members 252 opposite to the first abutment 254, and the second elastic element 243 is clamped by the second base 255 and the other rotating shaft mounting member 251. The second base 255 includes a second seat body 2551 and a first connecting plate 2553 disposed at one end of the second seat body 2551. The front side of the second seat body 2551 is provided with a plurality of connecting holes 2552. The first connecting plate 2553 includes a first abutting surface 2554 facing away from the second base 2551. The first abutting surface 2554 is provided with two third shaft holes 2556 and two first mounting holes 2557. The two third shaft holes 2556 are located at opposite ends of the first abutting surface 2554, and the two first mounting holes 2557 are located between the two third shaft holes 2556. The axis of the third shaft hole 2556 is parallel to the axis of the first mounting hole 2557. In this embodiment, the axis of the two third shaft holes 2556 and the axis of the two first mounting holes 2557 are located in the same plane. In some embodiments, the axis of the two third shaft holes 2556 is coplanar, the axis of the two first mounting holes 2557 is coplanar, and the plane containing the axis of the two first mounting holes 2557 is parallel to the plane containing the axis of the two third shaft holes 2556.

[0079] The rotating shaft device 22 further includes a first linkage component 26, which includes first gears 261 respectively disposed on a pair of first torque members 252 and a first driven gear set 263 disposed between the two first gears 261. The first gears 261 on the pair of first torque members 252 respectively mesh with the first driven gear set 263, so that the pair of first torque members 252 can rotate synchronously. In this embodiment, each of the two first torque members 252 is provided with a first gear 261, and a first driven gear set 263 is provided between the two first torque members 252, with each first gear 261 meshing with the first driven gear set 263. When one of the first torque members 252 rotates around the corresponding first rotating shaft 253, it drives the first gear 261 on that first torque member 252 to rotate around the first rotating shaft 253, and drives the other first torque member 252 to rotate synchronously around the corresponding first rotating shaft 253 through the first driven gear set 263. The first linkage component 26 of the rotating shaft device 22 can realize the synchronous folding or flattening of the two first torque members 252 of the torque component 25, the synchronous folding or flattening of the two pairs of rotating members 233 of the rotating component 23, and the synchronous folding or flattening of the two side support members 281 of the support component 28, so as to realize the synchronous folding or flattening of the two frames 21.

[0080] In some embodiments, a first gear 261 is provided on the outer peripheral wall of the first rotating cylinder 2521 of a pair of first torque members 252, and a plurality of first driven gear sets 263 are provided between the two first rotating cylinders 2521. The two first gears 261 mesh with the corresponding first driven gear sets 263, so that the pair of first torque members 252 can rotate synchronously.

[0081] like Figure 14 and Figure 15As shown, a first gear 261 is provided on the outer peripheral wall of the first rotating cylinder 2521 away from the first connecting part 2525. The axis of the first gear 261 is collinear with the axis of the first rotating cylinder 2521. The rotation angle range of the teeth of the first gear 261 arranged circumferentially around the first rotating cylinder 2521 is greater than or equal to 90 degrees and less than or equal to 180 degrees, that is, the first gear 261 is provided on the outer peripheral wall of the first rotating cylinder 2521 at more than one-quarter and less than one-half. The first driven gear set 263 includes two meshing first driven gears 2630 and a first connecting shaft 2631 passing through the two first driven gears 2630 respectively. Each first driven gear 2630 and the corresponding first connecting shaft 2631 are coaxial. The first gears 261 on the two first torque members 252 mesh with the two first driven gears 2630 respectively, so that the pair of first torque members 252 can rotate synchronously. The first driven gear 2630 includes a sleeve 2632 sleeved on the corresponding first connecting shaft 2631. The teeth of the first driven gear 2630 are arranged in a circle around the outer peripheral wall of the sleeve 2632. The first connecting shaft 2631 includes a connecting section 2631a connected to the first driven gear 2630, a guide section 2631b provided at one end of the connecting section 2631a, and a connecting section 2631c provided at the opposite end of the connecting section 2631a. The guide section 2631b and the connecting section 2631c extend out of the opposite ends of the first driven gear 2630.

[0082] In some embodiments, the first driven gear set 263 can be omitted, that is, the first gears 261 on the outer peripheral walls of the two first torque members 252 directly mesh with each other, thereby reducing the overall width of the rotating shaft device 22, thereby reducing the internal space occupied by the rotating shaft device 22 in the folding housing 20, which is not only beneficial to the layout of other components such as the motherboard or battery, but also beneficial to miniaturization.

[0083] The first elastic element 241 and the second elastic element 243 of the elastic component 24 can be sleeved on the first rotating shaft 253. The first elastic element 241 is used to provide elastic force to resist the first abutment 254 and the corresponding rotating shaft mounting 251, so that the first abutment 254 abuts a pair of first torque elements 252, and the rotating shaft mounting 251 abuts a pair of corresponding rotating elements 233. The second elastic element 243 is used to provide elastic force to push the corresponding rotating shaft mounting 251 against the corresponding pair of rotating elements 233. That is, the second elastic element 243 is clamped between the second base 255 and the corresponding rotating shaft mounting 251 in a pre-compression state. That is, the two opposite ends of the second elastic element 243 are used to elastically resist the second base 255 and the rotating shaft mounting 251 respectively. The second elastic element 243 has a pre-elastic force. In this embodiment, the elastic component 24 includes two second elastic elements 243. A second elastic element 243 is respectively sleeved on a pair of first rotating shafts 253. The two opposite ends of each second elastic element 243 elastically abut against the second base 255 and the rotating shaft mounting member 251, respectively. The second elastic element 243 and the first elastic element 241 may be the same or different. In this embodiment, the first elastic element 241 and the second elastic element 243 are both the same spring, that is, the first elastic element 241 and the second elastic element 243 have the same pre-elastic force.

[0084] like Figures 4-5 As shown, the rotating shaft device 22 also includes a back cover 29, to which a first base 231 and a second base 255 are connected. Specifically, the back cover 29 is a strip-shaped frame with a receiving groove 290. The first base 231 and the second base 255 are respectively housed in the receiving groove 290 and are fixedly connected to the back cover 29. Preferably, the back cover 29 has a plurality of mounting portions (not shown) on the inner surface of the receiving groove 290, and the first base 231 and the second base 255 are respectively connected to the corresponding mounting portions. The connection between the first base 231 and the mounting portion and the connection between the second base 255 and the mounting portion can be achieved by, but is not limited to, screwing, snap-fitting, or gluing.

[0085] Please refer to the following: Figures 26-35When assembling the rotating shaft device 22, the first gears 261 of a pair of first torque members 252 are respectively meshed with the two first driven gears 2630 of the first driven gear set 263, so that the two second abutting cams 2523 and the connecting section 2631c of the first driven gear set 263 are on the same side; the first abutting member 254 is sleeved on the connecting section 2631c of the first driven gear set 263, that is, the two connecting sections 2631c are respectively inserted into the two first guide holes 2548 of the first abutting member 254, until the two second cams 2540 are respectively meshed with the second abutting cams 2523 of the two first torque members 252; the second base 255 is sleeved on the first driven gear set 2630. The guide section 2631b of the second base 255, i.e., the two guide sections 2631b, are respectively inserted into the two first mounting holes 2557 of the second base 255; the first shafts 2531 of the two first rotating shafts 253 are respectively inserted into the two third shaft holes 2556, the first shaft holes 2522 of the two first torque members 252, and the two second shaft holes 2562 of the first abutment member 254 of the second base 255 from the side closest to the second base 255, until the second shaft 2533 of each first rotating shaft 253 abuts against the second base 255; a pair of first elastic members 241 are respectively sleeved on the first shafts 2531 of the pair of first rotating shafts 253, and a pair of second elastic members 243 are respectively sleeved on the pair of first rotating shafts 253. The second shaft 2533 of shaft 253; two rotating shaft mounting parts 251 are respectively sleeved on the opposite ends of a pair of first rotating shafts 253. Specifically, the first shafts 2531 of a pair of first rotating shafts 253 are inserted into the two abutment holes 2514 of one rotating shaft mounting part 251, and the third shafts 2535 of a pair of first rotating shafts 253 are inserted into the two abutment holes 2514 of the other rotating shaft mounting part 251; the rotating assembly 23 is assembled. Specifically, the first rotating parts 2333 of a pair of rotating parts 233 are rotatably installed in the two first arc grooves 2312 of the first base 231, so that the side of each rotating part 233 with the first anti-slip part 2331 abuts against the first base 231. The surfaces 2316 are fitted together, and the first cam 2330 of the rotating member 233 is housed in the corresponding guide groove 2315; the two first bases 231 are placed at opposite ends of the torque assembly 25, and the guide rails 2314 of the two first bases 231 are respectively inserted into the guide grooves 2516 of the two rotating shaft mounting members 251, so that the two first abutting cams 2510 of each rotating shaft mounting member 251 respectively rotatably abut against the first cams 2330 of the corresponding two rotating members 233; the two connecting members 234 are respectively placed on opposite sides of the torque assembly 25, and the first guide rails 2527 of the two first torque members 252 are respectively inserted into the first guide grooves 2346 of the two connecting members 234;Two rotating members 233 on each first base 231 are rotatably connected to two connecting members 234. Specifically, the lug 2336 of each rotating member 233 is placed in the transition groove 2343 of the corresponding connecting member 234, so that the first connecting hole 2334 of the rotating member 233 is aligned with the corresponding second connecting hole 2345. Then, the connecting shaft 2342 is inserted into the first connecting hole 2334 and the second connecting hole 2345, so that the end of the rotating member 233 away from the first base 231 is rotatably connected to the corresponding connecting member 233. The support assembly 28 is assembled to the front of the rotating assembly 23 and the torque assembly 25. Specifically, the middle support member 280 is connected to the front of the two first bases 231, and the two side support members 281 are respectively placed on the two connecting members. On the front of 234, the two second arc rails 2347 at opposite ends of each connector 234 are rotatably inserted into the two second arc grooves 2812 at opposite ends of the corresponding side support 281, and the first adjusting rod 2337 of each rotating member 233 is inserted into the first adjusting groove of the corresponding side support 281, and the second adjusting rod 2528 of each first torque member 252 is inserted into the second adjusting groove of the corresponding side support 281; then the two first bases 231 and the second base 255 are respectively fixedly connected to the back cover 29. Specifically, multiple fasteners pass through multiple connecting holes 2318 of each first base 231 and are locked to the back cover 29, and multiple fasteners pass through multiple connecting holes 2552 of the second base 255 and are locked to the back cover 29. At this time, the two opposite ends of each first elastic element 241 elastically abut against one of the rotating shaft mounting parts 251 and the first abutting part 254, respectively. The two first abutting cams 2510 of the rotating shaft mounting part 251 respectively cooperate with the first cams 2330 of the corresponding two rotating parts 233 and abut against each other. The ends of the two rotating parts 233 away from the first elastic element 241 abut against the corresponding first base 231. At the same time, the two second cams 2540 of the first abutting part 254 cooperate with the second abutting cams 2523 of a pair of first torque elements 252 and abut against each other. Each second elastic element 243 abuts against the first base 231. The two ends of the pair elastically abut against another rotating shaft mounting member 251 and a second base 255, respectively. The two first abutting cams 2510 of the other rotating shaft mounting member 251 respectively cooperate with and abut against the first cams 2330 of the corresponding two rotating members 233. The other rotating shaft mounting member 251 pushes against the corresponding two rotating members 233, so that the side of each rotating member 233 facing away from the first cam 2330 fits against the corresponding abutting surface 2316. If the pre-elastic force of the first elastic member 241 and the second elastic member 243 is both F, then the first abutting member 254 and each rotating shaft mounting member 251 are subjected to a pre-elastic force of 2F.

[0086] When the connector 234 drives the rotating component 233 to rotate relative to the first base 231, at the same time, the connector 234 drives the first torque component 252 to rotate relative to the first base 231. The two first torque components 252 achieve synchronous folding or synchronous unfolding through the first linkage component 26, so that the two side support components 281 fold or unfold relative to each other synchronously, thereby realizing the folding or unfolding of the rotating shaft device 22. During the folding or unfolding of the rotating shaft device 22, since the two opposite ends of the first elastic member 241 are respectively abutted by one of the rotating shaft mounting members 251 and the first abutting member 254, and the two opposite ends of the second elastic member 243 are respectively abutted by the second base 255 and the other rotating shaft mounting member 251, when the two first torque members 252 rotate synchronously around the corresponding first rotating shaft 253, the first torque members 252 rotatably push the second cam 2540 of the first abutting member 254 through the second abutting cam 2523, so that the first abutting member 254 squeezes the first elastic member 241; at the same time, the two rotating members 233 on each first base 231 rotate synchronously relative to the first base 231, so that the first cam 2330 of each rotating member 233 rotatably pushes the first abutting cam 2510 of the corresponding rotating shaft mounting member 251, so that the two rotating shaft mounting members 251 squeeze the first elastic member 241 and the second elastic member 243 respectively. The elastic force of the first elastic member 241 simultaneously pushes against the first supporting member 254 and one of the rotating shaft mounting members 251, causing the second cam 2540 of the first supporting member 254 to engage with the corresponding second abutting cam 2523, and the first abutting cam 2510 of one of the rotating shaft mounting members 251 to engage with the corresponding first cam 2330. The rotating shaft mounting member 251 pushes against the two corresponding rotating members 233 and the corresponding first positioning seat 231, and the two first torque members 252 are separated from the side of the first supporting member 254 and are tightly abutted against the second base 255. The elastic force of the second elastic member 243 pushes against another rotating shaft mounting member 251, causing the first abutting cam 2510 of the other rotating shaft mounting member 251 to engage with the corresponding first cam 2330, and the other rotating shaft mounting member 251 pushes against the two corresponding rotating members 233 and the corresponding first positioning seat 231, which are tightly abutted against each other. That is, there is a frictional torque between the first cam 2330 on one side of each rotating member 233 and the corresponding first abutting cam 2510, a frictional resistance between the rotating member 233 and the corresponding abutting surface 2316 on the other side, a frictional torque between the second cam 2540 of the first abutting member 254 and the second abutting cam 2523 of the corresponding first torque member 252, and a frictional resistance between the end of each first torque member 252 away from the second abutting cam 2523 and the second base 255.When the first torque member 252 rotates around the corresponding first rotating shaft 253, the frictional torque between the second abutting cam 2523 and the second cam 2540, the frictional torque between the first cam 2330 of each rotating shaft mounting member 251 and the corresponding first abutting cam 2510, the frictional resistance between each rotating shaft mounting member 251 and the corresponding first base 231, and the frictional resistance between the end of each first torque member 252 away from the second abutting cam 2523 and the second base 255, make the rotating shaft device 22 have a better hovering effect.

[0087] like Figures 4-5 and Figures 16-26 As shown, when the rotating shaft device 22 is bent from its flattened state, one of the connecting members 234 is bent relative to the first base 231 toward the other connecting member 234. This connecting member 234 drives the first arc track 2332 of the rotating member 233 to rotate in the first arc groove 2312 of the first base 231, and drives the corresponding first torque member 252 to rotate around the corresponding first rotating shaft 253, so that the two first torque members 252 move closer to each other. The first torque member 252 pushes against the first abutment member 254, which moves axially along the first rotating shaft 253, thus compressing the first elastic member 241. Simultaneously, the first torque member 252... The first gear 261 on 52 rotates around the first rotating shaft 253 to drive the two first driven gears 2630 of the first driven gear set 263 to rotate. The first driven gear set 263 drives the first gear 261 on another first torque member 252 to rotate around the corresponding first rotating shaft 253, thereby realizing the synchronous folding of the two first torque members 252. At the same time, the rotating members 233 on the two first bases 231 rotate synchronously and move closer to each other, so as to drive the two side support members 281 to move closer to each other synchronously until the front of the two side support members 281 and the front of the first base 231 form a teardrop shape in cross section. During the process of the two rotating members 233 on each first base 231 approaching each other, the rotating member 233 on one first base 231 pushes against the corresponding rotating shaft mounting member 251 and moves along the axial direction of the first rotating shaft 253 to compress the first elastic member 241, while the rotating member 233 on the other first base 231 pushes against the corresponding rotating shaft mounting member 251 and moves along the axial direction of the first rotating shaft 253 to compress the second elastic member 243.

[0088] During the folding process of the side support 281 relative to the first base 231, the axial force between the second cam 2540 and the second abutting cam 2523 on each first pivot 253 is equal to the sum of the elastic forces of the two first elastic elements 241. The axial force between the first abutting cam 2510 of the pivot mounting 251 that abuts against the first elastic element 241 and the corresponding first cam 2330 is equal to the sum of the elastic forces of the two first elastic elements 241. The axial force between the first abutting cam 2510 of the pivot mounting 251 that abuts against the second elastic element 243 and the corresponding first cam 2330 is equal to the sum of the elastic forces of the two first elastic elements 241. The frictional torque between the second abutting cam 2523 and the second cam 2540, the frictional torque between the first cam 2330 and the corresponding first abutting cam 2510 of each pivot mounting member 251, the frictional resistance between each pivot mounting member 251 and the corresponding first base 231, and the frictional resistance between the end of each first torque member 252 away from the second abutting cam 2523 and the second base 255 limit the two side supports 281 to a specific angle between 70 degrees and 130 degrees.

[0089] In other usage methods, the two connectors 234 can be rotated together in opposite directions. Each connector 234 rotates relative to the first arc groove 2312 of the corresponding first base 231 via the first arc rail 2332 of the corresponding rotating member 233, so that the two connectors 234 rotate synchronously relative to the first base 231 and move closer to each other. The two rotating shaft mounting members 251 move axially along the first rotating shaft 253 respectively and squeeze the first elastic member 241 and the second elastic member 243 to push against each other. The two connectors 234 drive the two first torque members 252 to rotate synchronously around the corresponding first rotating shaft 253 via the first linkage assembly 26 and move closer to each other. The first torque member 252 pushes against the first abutment member 254 and moves axially along the first rotating shaft 253 to squeeze the first elastic member 241. This causes the two side support members 281 to move closer to each other synchronously until the front of the two side support members 281 and the front of the first base 231 form a teardrop-shaped cross-section.

[0090] When the rotating shaft device 22 is unfolded from its fully bent state, one of the connecting members 234 is unfolded relative to the first base 231 away from the other connecting member 234. This connecting member 234 drives the first arc track 2332 of the rotating member 233 to rotate within the first arc groove 2312 of the first base 231. The connecting member 234, relative to the rotating members 233 at both ends, pushes against the two rotating shaft mounting members 251, causing them to move axially along the first rotating shaft 253 and respectively compress the first elastic member 241 and the second elastic member 243. This causes the corresponding first torque member 252 to rotate around the first rotating shaft 253, so that the two first torque members 252 move away from each other, and the first torque member 252 pushes against the first... A supporting member 254 moves axially along the first rotating shaft 253 to compress the first elastic member 241; at the same time, the first gear 261 on the first torque member 252 rotates around the first rotating shaft 253 to drive the two first driven gears 2630 of the first driven gear set 263 to rotate, and the first driven gear set 263 drives the first gear 261 on another first torque member 252 to rotate around the corresponding first rotating shaft 253, thereby realizing the synchronous unfolding of the two first torque members 252; the two rotating members 233 of the rotating assembly 23 rotate synchronously relative to the first base 231 and unfold relative to each other, so as to drive the two side support members 281 to unfold relative to each other synchronously, until the two side support members 281 and the first base 231 are flattened.

[0091] During the flattening process of the side support 281 relative to the first base 231, the axial force between the second cam 2540 and the second abutting cam 2523 on each first rotating shaft 253 is equal to the sum of the elastic forces of the two first elastic elements 241. The axial force between the first abutting cam 2510 of the rotating shaft mounting 251 that abuts against the first elastic element 241 and the corresponding first cam 2330 is equal to the sum of the elastic forces of the two first elastic elements 241. The axial force between the first abutting cam 2510 of the rotating shaft mounting 251 that abuts against the second elastic element 243 and the corresponding first cam 2330 is equal to the sum of the elastic forces of the two first elastic elements 241. The frictional torque between the second abutting cam 2523 and the second cam 2540, the frictional torque between the first cam 2330 and the corresponding first abutting cam 2510 of each pivot mounting member 251, the frictional resistance between each pivot mounting member 251 and the corresponding first base 231, and the frictional resistance between the end of each first torque member 252 away from the second abutting cam 2523 and the second base 255 limit the two side supports 281 to a specific angle between 130 degrees and 70 degrees.

[0092] In other usage methods, the two connectors 234 can be rotated together in opposite directions. Each connector 234 rotates relative to the first arc groove 2312 of the corresponding first base 231 via the first arc rail 2332 of the corresponding rotating member 233, so that the two connectors 234 rotate synchronously relative to the first base 231 and move closer to each other. The two rotating shaft mounting members 251 move axially along the first rotating shaft 253 respectively and press the first elastic member 241 and the second elastic member 243 against each other. The two connectors 234 drive the two first torque members 252 to rotate synchronously around the corresponding first rotating shaft 253 via the first linkage assembly 26 and move closer to each other. The first torque member 252 pushes the first abutment member 254 to move axially along the first rotating shaft 253 and press the first elastic member 241. This causes the two side support members 281 to move away from each other synchronously until the front of the two side support members 281 is flush with the front of the first base 231.

[0093] Please refer to the following: Figures 1-5 The frame 21 includes a front face 211, a back face 213, two opposite sides 214, and two end faces 215. A pivot device 22 connects two adjacent end faces 215 of the two frames 21. The bendable area 31 of the flexible screen 30 is attached to the front face of the pivot device 22, and the non-bendable area 33 of the flexible screen 30 is connected to the front face 211 of the frame 21. Each frame 21 has a receiving groove 216 on its end face 215 facing the pivot device 22. The receiving groove 216 passes through the front face 211 of the frame 21, and its opposite ends extend to the opposite sides 214 of the frame 21. The opposite sides of the pivot device 22 are respectively accommodated in the receiving grooves 216 of the two frames 21, and each connector 234 is fixedly connected to the corresponding frame 21. The back face 213 of the frame 21 has multiple receiving spaces (not shown in the figure) for installing electronic components such as circuit boards and batteries.

[0094] The installed pivot device 22 is placed between the two frames 21. The connectors 234 on opposite sides of the back cover 29 are respectively housed in the receiving slots 216 of the two frames 21, and the two connectors 234 are respectively fixedly connected to the two frames 21. At this time, the front faces 211 of the two frames 21 and the front faces of the two side support members 281 are coplanar. The back of the flexible screen 30 is connected to the front faces 211 of the two frames 21 and the front face of the pivot device 22. Specifically, the bendable area 31 faces the pivot device 22, and the two non-bendable areas 33 face the front faces of the two frames 21 respectively. When the flexible screen 30 is in a flattened state, the front of the central support member 280 is flush with the front of the two side supports 281. The second cam 2540 and the second abutting cam 2523 abut against each other. The first abutting cam 2510 of each pivot mounting member 251 abuts against the first cam 2330 of the corresponding rotating member 234. Each pivot mounting member 251 abuts against the corresponding first base 231, and each first torque member 252 abuts against the second base 255, thereby limiting the two side supports 281 to remain in a flattened state and enabling the pivot device to... The connections between the components in 22 are more compact, thereby reducing the overall volume of the hinge device 22 and reducing the internal space occupied by the housing 20. This is beneficial for the layout of other components such as the motherboard or battery, and for the miniaturization of the electronic device 100. Secondly, since the front of the side support 281 is coplanar with the front of the middle support 280, the flexible screen 30 will not be impacted by the step difference when flattened. The flexible screen 30 will not have defects such as color spots or bright spots, ensuring the reliability of the flexible screen 30. At the same time, it also improves the touch feel of the flexible screen 30 and enhances the user experience.

[0095] Please refer to the following: Figures 1-4 and Figures 16-26When bending the electronic device 100, a folding force is applied to at least one of the two frames 21 of the electronic device 100, causing the connector 234 connected to the two frames 21 to rotate relative to the first base 231 in a direction that is close to each other, causing the two rotating members 233 to rotate relative to the first base 231 and move closer to each other, and the two first torsion members 252 to fold synchronously through the first linkage component 26, so as to realize that the two side support members 281 of the rotating shaft device 22 fold together, and the bendable area 31 of the flexible screen 30 bends with the rotating shaft device 22. Specifically, if a folding force is applied to one of the frames 21, the frame 21 causes the corresponding rotating member 233 to rotate relative to the first base 231 towards the side closer to the flexible screen 30. Simultaneously, the connector 234 causes the two first torque members 252 to fold synchronously towards each other. The second abutting cams 2523 of the two first torque members 252 respectively push against the two second cams 2540 of the first abutting member 254, thereby causing the first abutting member 254 to compress the first elastic member 241. At the same time, the two rotating members 233 of each first base 231 relative to the flexible screen 30... The first base 231 rotates synchronously and moves closer to each other, causing the two side support members 281 to move closer to each other synchronously. The two rotating shaft mounting members 251 respectively squeeze the first elastic member 241 and the second elastic member 243 until the front of the two side support members 281 and the front of the middle support member 280 form a teardrop shape in cross section. The bendable area 31 of the flexible screen 30 bends with the rotating shaft device 22 until the front of the two non-bendable areas 33 of the flexible screen 30 fits together, and the bendable area 31 bends into a teardrop shape, thereby achieving seamless folding of the electronic device 100.

[0096] During the bending process of the electronic device 100, the frictional torque between the second abutting cam 2523 and the second cam 2540 of the first torque member 252 on each first pivot 253, and the frictional torque between the first abutting cam 2510 and the corresponding first cam 2330 of the pivot mounting member 251, resist the rebound force of the flexible screen 30, so that the two side support members 281 are relatively positioned at a specific angle, and the two frames 21 are limited to a specific angle between 70 degrees and 130 degrees. The bendable area 31 of the flexible screen 30 is bent into a teardrop shape, reducing the duty cycle of the bendable area 31 after bending, thereby reducing the overall thickness of the electronic device 100.

[0097] In other folding methods of the electronic device 100, a folding force can be applied to both frames 21 at the same time. The two frames 21 respectively drive the rotating member 233 to rotate relative to the first base 231 towards the side closer to the flexible screen 30, and drive the two first torsion members 252 to rotate around the corresponding first rotating shaft 253 towards the side closer to the flexible screen 30. The folding of the electronic device 100 is achieved through the rotating shaft device 22.

[0098] When the electronic device 100 needs to be flattened, one of the frames 21 is pulled outward, causing the two rotating members 233 connected to the two frames 21 to rotate relative to the first base 231 and move away from each other. The two first torque members 252 rotate synchronously around their respective first rotating shafts 253 and move away from each other, thus enabling the two side supports 281 of the rotating shaft device 22 to unfold, allowing the bendable area 31 of the flexible screen 30 to flatten with the rotating shaft device 22. Specifically, if a flattening force is applied to one of the frames 21, that frame 21 drives the corresponding rotating member 233 to rotate relative to the first base 231 away from the flexible screen 30. Simultaneously, the connecting member 234 drives the two first torque members 252 to flatten synchronously. The second abutting cam 2523 of the first torque member 252 pushes against the second cam 2540 of the first abutting member 254, causing the first abutting member 254 to compress the first elastic member 241. At the same time, the two first bases 23 of the rotating assembly 23... The two rotating parts 233 on the 1 rotate synchronously relative to the first base 231 and move away from each other. The two rotating shaft mounting parts 251 press the first elastic part 241 and the second elastic part 243 respectively, so as to drive the two side support parts 281 to move away from each other synchronously until the front of the two side support parts 281 and the front of the middle support part 280 are coplanar. The bendable area 31 of the flexible screen 30 unfolds with the rotating shaft device 22 until the bendable area 31 of the flexible screen 30 is completely flattened, thereby realizing the flattening of the electronic device 100.

[0099] During the flattening of the electronic device 100, the frictional torque between the second abutting cam 2523 and the second cam 2540 on each first rotating shaft 253 and the frictional torque between the first cam 2330 and the first abutting cam 2510 resist the rebound force of the flexible screen 30, so that the two side support members 281 are positioned relative to each other at a specific angle, and the two frames 21 are limited to a specific angle between 70 degrees and 130 degrees.

[0100] In other folding methods of the electronic device 100, an outward pulling force can be applied to both frames 21 at the same time. The two frames 21 respectively drive the two rotating parts 233 and the pair of first torsion parts 252 of each first base 231 to rotate to the side away from the flexible screen 30, and realize the unfolding of the electronic device 100 through the rotating shaft device 22.

[0101] The rotating shaft device 22 of the electronic device 100 of the present invention achieves synchronous folding or unfolding through the rotating component 23 and the torque component 25. Since there is frictional torque between the first torque component 252 and the first abutment component 254, and frictional torque between the rotating component 233 and the rotating shaft mounting component 251, when the electronic device 100 is not subjected to external force, these frictional resistances can limit the first torque component 252 and the rotating component 233 to remain stationary relative to the first base 231, thereby achieving the suspension of the two side support components 281 and giving the electronic device 100 a suspension effect. Furthermore, there is frictional resistance between the rotating component 233 and the first base 231, and between the first torque component 252 and the second base 251... Frictional resistance exists between the components 5 to improve the hovering effect of the electronic device 100. In addition, the two opposite ends of the first elastic member 241 elastically abut against the first support member 254 and the pivot mounting member 251, respectively, and the two opposite ends of the second elastic member 243 elastically abut against the second base 255 and the corresponding pivot mounting member 251, respectively. This makes the pivot device 22 compact in structure and reduces its volume, thereby reducing the internal space occupied by the pivot device 22 in the folding housing 20. This is not only beneficial for the layout of other components such as the motherboard or battery, but also for miniaturization. The pivot device 22 has a simple structure, low manufacturing cost, and high reliability of the connection between the components, thus improving the overall strength of the device.

[0102] Please refer to the following: Figures 26-31The structure of the rotating shaft device 22a in the second embodiment of this application is similar to that of the rotating shaft device 22 in the first embodiment described above, except that the rotating shaft device 22a adds a pair of second torque members and a second abutment member to the rotating shaft device 22. Specifically, the rotating shaft device 22a includes a rotating assembly 23, a torque assembly 25a, an elastic assembly 24, and a support assembly 28. The rotating assembly 23 includes two first bases 231, a pair of rotating members 233 rotatably disposed on opposite sides of each first base 231, and a pair of connecting members 234. The rotating shaft includes two pairs of second rotating shafts 250, which are arranged along the rotation axis between the rotating members 233 and the first bases 231. The torque assembly 25a includes a pair of first torque members 252, a pair of second torque members 256, a first abutment member 254, and a second abutment member 257. The second rotating shaft 250, a pair of first torque members 252, a pair of second torque members 256, a first abutment member 254, and a second abutment member 257 are located between two first bases 231. The ends of the two pairs of second rotating shafts 250 that are far apart from each other are respectively connected to two rotating shaft mounting members 251. The pair of first torque members 252 are rotatably sleeved on one pair of second rotating shafts 250, and the pair of second torque members 256 are rotatably sleeved on the other pair of second rotating shafts 250. The first abutment member 254 is slidably sleeved on one pair of second rotating shafts 250 along the axial direction of the second rotating shaft 250. The pair of first torque members 252 rotatably abut against the first abutment member 254. The second abutment member 257 is slidably sleeved on the other pair of second rotating shafts 250 along the axial direction of the second rotating shaft 250, and the pair of second torque members 256 rotatably abut against the second abutment member 257. The rotating component 23, elastic component 24 and support component 28 of the rotating shaft device 22a in the second embodiment have the same structure as those in the first embodiment, and will not be described here again.

[0103] Each pair of second rotating shafts 250 are spaced parallel to each other. Each second rotating shaft 250 includes a first rotating shaft segment 2501, a second rotating shaft segment 2503, and a third rotating shaft segment 2505. These three segments share a common axis. The outer diameters of both the first and third rotating shaft segments 2501 and 2505 are smaller than the outer diameter of the second rotating shaft segment 2503. The outer diameter of the third rotating shaft segment 2505 is smaller than the inner diameter of the abutment hole 2514 of the rotating shaft mounting component 251. The outer diameter of the second rotating shaft segment 2503 is larger than the inner diameter of the abutment hole 2514. The axial length of the first rotating shaft segment 2501 is greater than the axial length of the second rotating shaft segment 2503. The outer diameter of the second pivot section 2503 is slightly smaller than or equal to the inner diameter of the first elastic element 241, so that the first elastic element 241 sleeved on the second pivot section 2503 will not shake; the outer diameter of the second pivot section 2503 is slightly smaller than or equal to the inner diameter of the second elastic element 243, so that the second elastic element 243 sleeved on the second pivot section 2503 will not shake.

[0104] The two second cams 2540 of the first abutment member 254 are respectively sleeved on one of the pairs of second rotating shafts 250, and the two second cams 2540 of the first abutment member 254 rotatably abut against the second abutting cams 2523 of a pair of first torque members 252; the second abutment member 257 includes two third cams 2570 respectively sleeved on another pair of second rotating shafts 250, and each second torque member 256 includes a third abutting cam 2563 sleeved on the corresponding second rotating shaft 250, and the two third cams 2570 of the second abutment member 257 rotatably abut against the third abutting cams 2563 of a pair of second torque members 256. Specifically, the second torque member 256 includes a second rotating part 2560 rotatably connected to the second rotating shaft 250, a third abutting cam 2563 disposed on the second rotating part 2560, and a second connecting part 2565 connected to the second rotating part 2560. The third abutting cam 2563 is rotatably sleeved on the corresponding second rotating shaft 250. The second abutting member 257 includes two third cams 2570 slidably sleeved on a pair of second rotating shafts 250. The pair of second rotating shafts 250 pass through the third abutting cams 2563 of the pair of second torque members 256 and the two third cams 2570 of the second abutting member 257. The two third abutting cams 2563 rotatably abut against the two third cams 2570 respectively. Specifically, the second rotating part 2560 is provided with a second shaft hole 2562 along the axial direction of the second rotating shaft 250, and the second rotating shaft 250 passes through the second shaft hole 2562; the end of the second connecting part 2565 away from the second rotating part 2560 is slidably connected to the connecting member 234; the third abutting cam 2563 is provided at the end of the second rotating part 2560 facing the second abutting member 257, the axis of the third abutting cam 2563 is collinear with the axis of the second shaft hole 2562, and the third abutting cam 2563 and the third cam 2570 cooperate to abut against each other. The first elastic member 241 is compressed and disposed between the first abutment member 254 and one of the rotating shaft mounting members 251. The first elastic member 241 provides elastic force between the first abutment member 254 and the first torque member 252 and elastic force between the rotating shaft mounting member 251 and the corresponding first base 231. The second elastic member 243 is compressed and disposed between the second abutment member 257 and the second base 255. The second elastic member 243 provides elastic force between the second abutment member 257 and the second torque member 256 and elastic force against the second abutment member 257 pushing against the other rotating shaft mounting member 251 and the corresponding pair of rotating members 233.

[0105] The second torque member 256 and the corresponding connecting member 234 are slidably connected by a guide groove and a guide rail. The guide groove is provided in one of the connecting member 234 and the second torque member 256, and the guide rail is provided in the other. In this embodiment, the connecting member 234 is provided with a second guide groove 2348 along an axial direction perpendicular to the second rotating shaft 250, and the second connecting portion 2565 of the second torque member 256 is provided with second guide rails 2567 on opposite sides. The second guide rails 2567 are slidably inserted into the second guide grooves 2348 of the corresponding connecting member 234. Specifically, the second connecting portion 2565 includes two parallel and spaced extension strips, each extension strip extending along an axial direction perpendicular to the second rotating shaft 250, and the side of each extension strip opposite to the other extension strip is provided with a second guide rail 2567.

[0106] The second rotating part 2560 is a second rotating cylinder 2561 sleeved on the second rotating shaft 250. The third abutting cam 2563 is located at the end of the second rotating cylinder 2561 facing the second abutting member 257. The axis of the third abutting cam 2563 is collinear with the axis of the second rotating cylinder 2561. The second abutting member 257 also includes two second abutting cylinders 2571 respectively sleeved on the two second rotating shafts 250 and a second connecting part 2576 connecting the two second abutting cylinders 2571. The third cam 2570 is located at the end of the second abutting cylinder 2571 facing the second torque member 256. The axis of the third cam 2570 is collinear with the axis of the second abutting cylinder 2571. Specifically, the third abutting cam 2563 includes a concave-convex surface located on one end of the second rotating cylinder 2561 facing the second abutting member 257. This concave-convex surface includes a second protrusion 2564 and a second recess 2566, which are arranged sequentially at intervals along the circumference of the second rotating cylinder 2561. The number of second protrusions 2564 and second recesses 2566 can be configured as needed. For example, the third abutting cam 2563 may include one second protrusion 2564 and one second recess 2566, two second protrusions 2564 and two second recesses 2566, three second protrusions 2564 and three second recesses 2566, or four second protrusions 2564 and four second recesses 2566, etc. In this embodiment, the third abutting cam 2563 includes three second protrusions 2564 and three second recesses 2566 arranged circumferentially along the second rotating cylinder 2561. Each second abutting cylinder 2571 has a third cam 2570 at one end facing the second torque member 256; that is, the third cam 2570 is located at the end of the second abutting cylinder 2571 away from the second elastic member 243. The third cam 2570 includes a concave-convex surface at one end of the second abutting cylinder 2571 facing the second torque member 256, which includes a fourth protrusion 2573 and a fourth recess 2575, which are arranged sequentially at intervals along the circumference of the second abutting cylinder 2571. The number of fourth protrusions 2573 and the number of fourth recesses 2575 can be set as needed. For example, the third cam 2570 may include one fourth protrusion 2573 and one fourth recess 2575, two fourth protrusions 2573 and two fourth recesses 2575, three fourth protrusions 2573 and three fourth recesses 2575, or four fourth protrusions 2573 and four fourth recesses 2575, etc. In this embodiment, the third cam 2570 includes three fourth protrusions 2573 and three fourth recesses 2575 arranged circumferentially along the second abutment cylinder 2571.

[0107] The fourth shaft hole 2572 of the second abutment cylinder 2571 is a through hole for the third cam 2570. The second connecting portion 2576 is provided with mutually spaced second guide holes 2578, which are parallel to the fourth shaft hole 2572. In this embodiment, the axis of the two fourth shaft holes 2572 and the axis of the two second guide holes 2578 are located in the same plane. In some embodiments, the axis of the two fourth shaft holes 2572 is coplanar, the axis of the two second guide holes 2578 is coplanar, and the plane containing the axis of the two second guide holes 2578 is parallel to the plane containing the axis of the two fourth shaft holes 2572. Preferably, the opposite end faces of the second abutment member 257 form arc surfaces to facilitate the folding or unfolding of the rotating shaft device.

[0108] The torque assembly 25 also includes a third base 258, which is connected between two pairs of second rotating shafts 250. The centerlines of the two second rotating shafts 250 on the same side of the third base 258 are collinear, that is, the centerlines of the two second rotating shafts 250 on one side of the third base 258 are collinear, and the centerlines of the two second rotating shafts 250 on the opposite side of the third base 258 are collinear. A pair of first torque members 252 abut against the third base 258 on the side away from the first abutment member 254, and a pair of second torque members 256 abut against the corresponding rotating shaft mounting member 251 on the side away from the second abutment member 257. The third base 258 abuts against the side of the pair of first torque members 252 away from the first abutment member 254, and the second elastic member 243 is clamped by the third base 258 and the second abutment member 257. The third base 258 includes a third base body 2581 and a second connecting plate 2583 disposed at one end of the third base body 2581. A connecting hole 2582 is provided on the front side of the third base body 2581. The second connecting plate 2583 includes a second abutting surface 2584 facing away from the third base body 2581. The second abutting surface 2584 has two fifth shaft holes 2586 and two second mounting holes 2587. The two fifth shaft holes 2586 are located at opposite ends of the second abutting surface 2584, and the two second mounting holes 2587 are located between the two fifth shaft holes 2586. The axis of the fifth shaft hole 2586 is parallel to the axis of the second mounting hole 2587. In this embodiment, the axis of the two fifth shaft holes 2586 and the axis of the two second mounting holes 2587 are located in the same plane. In some embodiments, the centerlines of the two fifth shaft holes 2586 are coplanar, the centerlines of the two second mounting holes 2587 are coplanar, and the plane containing the centerlines of the two second mounting holes 2587 is parallel to the plane containing the centerlines of the two fifth shaft holes 2586.

[0109] The rotating shaft device 22a further includes a second linkage component 26a. The second linkage component 26a includes second gears 261a respectively disposed on a pair of second torque members 256 and a second driven gear set 263a disposed between the two second gears 261a. The second gear 261a of each second torque member 256 meshes with the second driven gear set 263a, so that the pair of second torque members 256 can rotate synchronously. In this embodiment, each of the two second torque members 256 is provided with a second gear 261a, and a second driven gear set 263a is provided between the two second torque members 256. Each second gear 261a meshes with the second driven gear set 263a. When one of the second torque members 256 rotates around the corresponding second rotating shaft 250, it drives the second gear 261a on the one of the second torque members 256 to rotate around the second rotating shaft 250, and drives the other second torque member 256 to rotate synchronously around the corresponding second rotating shaft 250 through the second driven gear set 263a. The second linkage component 26a of the rotating shaft device 22a can realize the synchronous folding or flattening of the two second torque members 256 of the torque component, the synchronous folding or flattening of the two pairs of rotating members 233 of the rotating component 23, and the synchronous folding or flattening of the two side support members of the support component, so as to realize the synchronous folding or flattening of the two shells.

[0110] Specifically, a second gear 261a is provided on the outer peripheral wall of the second rotating cylinder 2561 opposite to the second connecting part 2565. The axis of the second gear 261a is collinear with the axis of the second rotating cylinder 2561. The rotation angle range of the teeth of the second gear 261a arranged circumferentially around the second rotating cylinder 2561 is greater than or equal to 90 degrees and less than or equal to 180 degrees, that is, the second gear 261a is provided on the outer peripheral wall of the second rotating cylinder 2561 at more than one-quarter and less than one-half. The second driven gear set 263a includes two meshing second driven gears and second connecting shafts 2731 respectively passing through the two second driven gears 2730. Each second driven gear and the corresponding second connecting shaft 2731 are coaxial. The second gears 261a on the two second torque members 256 mesh with the two second driven gears 2730 respectively, so that the pair of second torque members 256 can rotate synchronously. The second driven gear 2730 includes a sleeve fitted onto the corresponding second connecting shaft 2731, and the teeth of the second driven gear 2670 are arranged in a circle around the outer peripheral wall of the sleeve.

[0111] In some embodiments, a second gear 261a is provided on the outer peripheral wall of the second rotating cylinder 2561 of a pair of second torque members 256, and a plurality of second driven gear sets 263a are provided between the two second rotating cylinders 2561. The two second gears 261a are respectively meshed with the second driven gear sets 263a, so that the pair of second torque members 256 can rotate synchronously.

[0112] In some embodiments, the second driven gear set 263a can be omitted, that is, the second gears 261a on the outer peripheral walls of the two second torque members 256 directly mesh with each other, thereby reducing the overall width of the rotating shaft device 22a, thereby reducing the internal space occupied by the rotating shaft device 22a in the folding housing, which is not only beneficial to the layout of other components such as the motherboard or battery, but also beneficial to miniaturization.

[0113] Please refer to the following: Figures 26-38When assembling the rotating shaft device 22a, since the assembly method of the rotating shaft device 22a is similar to that of the rotating shaft device 22 in the first embodiment, only a brief description of the assembly process of the rotating device 22a is given here: Assemble the first linkage component 26, sleeve the first abutment member 254 on the first connecting shaft 2631, so that the two second cams 2540 respectively mesh with the second abutment cams 2523 of the two first torque members 252; sleeve the third base 258 on the end of the first connecting shaft 2631 away from the first abutment member 254; insert the first shaft section 2501 of one pair of second rotating shafts 250 into the two second shaft holes 2562, the two first shaft holes 2522 and the two fifth shafts of the first abutment member 254 from the side away from the third base 258. Hole 2586; A pair of first elastic members 241 are respectively fitted onto the second shaft sections 2503 of a pair of second rotating shafts 250; Assemble the second linkage assembly 26a, and fit the second abutment member 257 onto one side of the second driven gear set 263a so that the two third cams 2570 respectively cooperate with the two third abutment cams 2563 to abut against each other; Insert a pair of second connecting shafts 2731 into the two second guide holes 2578 and the inner cavities of the two second gears 261a of the second abutment member 257; Insert the first shaft sections 2501 of another pair of second rotating shafts 250 into the two fourth shaft holes 2572 and the second shaft holes 2562 of a pair of second torque members 256 of the second abutment member 257; Fit the two second elastic members 243 onto the other... For the second shaft section 2503 of the second connecting shaft 2731; the third shaft sections 2505 of the two second shafts 250 are respectively inserted into the two fifth shaft holes 2586 of the third base 258 from the side away from the pair of first torque members 252, and at the same time, the ends of the pair of second connecting shafts 2731 away from the second torque members 256 are respectively inserted into the two second mounting holes 2587 of the third base 258; one shaft mounting member 251 is sleeved on one of the pair of second shafts 250 until the two second cams 2540 respectively mesh with the two second abutting cams 2523; the third base 258 is sleeved on the end of the first connecting shaft 2631 of the first driven gear set 263 away from the first abutting member 254; the third shaft sections 2505 of the pair of second shafts 250 are respectively inserted into the two fifth shaft holes 2586 of the third base 258. The first rotating shaft section 2501 is inserted from the side away from the third base 258 into the two second shaft holes 2562, two first shaft holes 2522 and two fifth shaft holes 2586 of the first abutment member 254 respectively; the two rotating shaft mounting members 251 are respectively sleeved on the opposite ends of the two pairs of second rotating shafts 250; the rotating assembly 23 is assembled, the two first bases 231 are placed at the opposite ends of the torque assembly, and the guide rails 2314 of the two first bases 231 are respectively inserted into the guide grooves 2516 of the two rotating shaft mounting members 251, so that the two first abutting cams 2510 of each rotating shaft mounting member 251 respectively rotatably abut against the first cams 2330 of the corresponding two rotating members 233; the two connecting members 234 are respectively connected to the opposite sides of the torque assembly.The two rotating parts 233 on each first base 231 are rotatably connected to the two connecting parts respectively; then the support assembly is assembled to the front of the rotating assembly 23 and the torque assembly 25; then the two first bases 231 and the third base 258 are fixedly connected to the back cover respectively.

[0114] At this time, two first elastic members 241 are respectively sleeved on one of the pair of second rotating shafts 250, and the two first elastic members 241 are clamped by the first abutment member 254 and the corresponding rotating shaft mounting member 251. One end of the first elastic member 241 elastically pushes the first abutment member 254 against the pair of first torque members 252, so that the two second cams 2540 of the first torque member 254 respectively cooperate with the two second abutting cams 2523 of the pair of first torque members 252 and abut against each other. The side of the pair of first torque members 252 away from the first abutment member 254 abuts against the third base 258. The other end of the first elastic member 241 pushes the corresponding rotating shaft mounting member 251, so that the rotating shaft mounting member 251 pushes the corresponding rotating member 233 against the corresponding first base 231. The two first abutting cams 2510 of the rotating shaft mounting member 251 respectively cooperate with the first cams of the two corresponding rotating members 233. 2330 cooperates and abuts against each other; two second elastic members 243 are respectively sleeved on another pair of second rotating shafts 250, and the two second elastic members 243 are clamped by the third base 258 and the second abutting member 257. One end of the second elastic member 243 elastically pushes the second abutting member 257 against a pair of second torque members 256, so that the second torque members 256 abut against the corresponding rotating shaft mounting member 251, so that the rotating shaft mounting member 251 pushes the corresponding rotating member 233 against the corresponding first base 231, so that the two third cams 2570 of the second abutting member 257 respectively cooperate with the third abutting cams 2563 of the pair of second torque members 256 and abut against each other, and the two first abutting cams 2510 of the rotating shaft mounting member 251 respectively cooperate with the first cams 2330 of the corresponding two rotating members 233 and abut against each other, and the other end of the second elastic member 243 abuts against the third base 258.

[0115] Please refer to the following: Figures 32-40As shown, when the rotating shaft device 22a is bent from its flattened state, one of the connecting members 234 is bent relative to the first base 231 toward the other connecting member 234. This connecting member 234 drives the first arc track 2332 of the rotating member 233 to rotate in the first arc groove 2312 of the first base 231, and drives the corresponding first torque member 252 and second torque member 256 to rotate around the corresponding second rotating shaft 250, so that the two first torque members 252 and the two second torque members 256 move closer to each other. The first torque member 252 pushes against the first abutment member 254 and moves axially along the second rotating shaft 250 to compress the first elastic member 241, and the second torque member 256 pushes against the second abutment member 257 and moves axially along the second rotating shaft 250 to compress the second elastic member 243. The first gear 261 on the first torque member 252 rotates around the second rotating shaft 250. The first driven gears 2630 of the first driven gear set 263 rotate, thereby driving the first gear 261 on the other first torque member 252 to rotate around the corresponding second shaft 250, thus achieving synchronous folding of the two first torque members 252; the second gear 261a on the second torque member 256 rotates around the second shaft 250 to drive the two second driven gears 2730 of the second driven gear set 263a to rotate, thereby driving the second gear 261a on the other second torque member 256 to rotate around the corresponding second shaft 250, thus achieving synchronous folding of the two second torque members 256; at the same time, the rotating members 233 on the two first bases 231 rotate synchronously and move closer to each other, thereby driving the two side support members to move closer to each other synchronously, until the front of the support assembly 28 forms a teardrop shape in cross-section.

[0116] When the rotating shaft device 22a is unfolded from its fully bent state, one of the connecting members 234 is unfolded relative to the first base 231 away from the other connecting member 234. This connecting member 234 drives the first arcuate rail 2332 of the rotating member 233 to rotate in the first arcuate groove 2312 of the first base 231, and drives the corresponding first torque member 252 and second torque member 256 to rotate around the corresponding first rotating shaft 253, so that the two first torque members 252 and the two second torque members 256 move away from each other. The first torque member 252 pushes against the first abutment member 254, moving axially along the second rotating shaft 250, thus compressing the first elastic member 241. The second torque member 256 pushes against the second abutment member 257, moving axially along the second rotating shaft 250, thus compressing the second elastic member 243. The first gear 261 on the first torque member 252 rotates around the second rotating shaft 250. The first driven gear 2630 of the first driven gear set 263 rotates, thereby driving the first gear 261 on the other first torque member 252 to rotate around the corresponding second rotating shaft 250, thus achieving the synchronous unfolding of the two first torque members 252. The second gear 261a on the second torque member 256 rotates around the second rotating shaft 250, thereby driving the two second driven gears 2730 of the second driven gear set 263a to rotate, thereby driving the second gear 261a on the other second torque member 256 to rotate around the corresponding second rotating shaft 250, thus achieving the synchronous unfolding of the two second torque members 256. The two rotating members 233 of the rotating assembly 23 rotate synchronously relative to the first base 231 and unfold relative to each other, thereby driving the support assembly 28 to unfold relative to each other until the front of the support assembly 28 is flattened.

[0117] During the folding or unfolding process of the rotating shaft device 22a, the axial force between the second cam 2540 and the second abutting cam 2523 on one of the second rotating shafts 250 is equal to the sum of the elastic forces of the two first elastic elements 241. The axial force between the first abutting cam 2510 of the rotating shaft mounting member 251, which abuts against the first elastic element 241, and the corresponding first cam 2330 is equal to the sum of the elastic forces of the two first elastic elements 241. The axial force between the third cam 2570 and the third abutting cam 2563 on the other second rotating shaft 250 is equal to the sum of the elastic forces of the two second elastic elements 243. The axial force between the first abutting cam 2510 of the rotating shaft mounting member 251, which abuts against the second elastic element 243, and the corresponding first cam 2330 is equal to the sum of the elastic forces of the two second elastic elements 243. The frictional torque between the second abutting cam 2523 and the second cam 2540, the frictional torque between the third abutting cam 2563 and the third cam 2570, the frictional torque between the first cam 2330 and the corresponding first abutting cam 2510 of each pivot mounting member 251, the frictional resistance between each pivot mounting member 251 and the corresponding first base 231, the frictional resistance between the end of each first torque member 252 away from the second abutting cam 2523 and the third base 258, and the frictional resistance between the end of each second torque member 256 away from the third abutting cam 2563 and the corresponding pivot mounting member 251 limit the two side supports to a specific angle between 70 degrees and 130 degrees.

[0118] The present invention also provides a folding housing with the above-mentioned rotating shaft device 22a, wherein the rotating shaft device 22a is located between two housings, and the two opposite sides of the rotating shaft device 22a are respectively connected to the two housings of the folding housing.

[0119] The present invention also provides an electronic device equipped with the aforementioned rotating shaft device 22a. The electronic device includes the rotating shaft device 22a, a flexible screen, and two housings. The rotating shaft device 22a is located between the two housings, and the opposite sides of the rotating shaft device 22a are respectively connected to the two housings. The back of the flexible screen is attached to the front of the rotating shaft device 22a and the front of the two housings.

[0120] The rotating shaft device 22a of the present invention achieves synchronous folding or unfolding through a rotating assembly and a torque assembly. Because there is frictional resistance between the first torque member 252 and the first abutment member 254, between the second torque member 256 and the second abutment member 257, and between the rotating member 233 and the rotating shaft mounting member 251, when the electronic device is subjected to external force, these frictional resistances can limit the first torque member 252, the second torque member 254, and the connecting member 233 to remain stationary relative to the first base 231, thereby achieving the suspension of the two side supports and giving the electronic device a suspension effect. Furthermore, the frictional resistance between the rotating member 233 and the first base 231, and between the first torque member 252 and the third base 258... Frictional resistance exists between the frictional resistance and the second torque member 256 and the corresponding pivot mounting member 251, resulting in better hovering performance of the electronic device. Furthermore, the two opposite ends of the first elastic member 241 elastically abut against the first support member 254 and the pivot mounting member 251, respectively, while the two opposite ends of the second elastic member 243 elastically abut against the second base 258 and the second support member 257, respectively. This makes the pivot device 22a compact in structure and reduces its volume, thereby minimizing the internal space occupied by the pivot device 22a within the folding housing. This not only facilitates the layout of other components such as the motherboard or battery but also promotes miniaturization. The pivot device 22a has a simple structure, low manufacturing cost, and high reliability of connections between components, thus improving the overall strength of the device.

[0121] Please refer to the following: Figures 41-46The structure of the rotating shaft device 22b in the third embodiment of this application is similar to that of the rotating shaft device 22 in the first embodiment, except that the second base is omitted from the rotating shaft device 22 in the first embodiment, and a pair of second torque members and a pair of second abutment members are added. Specifically, the rotating shaft device 22b includes a rotating assembly 23, a torque assembly 25b, an elastic assembly 24, and a support assembly 28. The rotating assembly 23 includes two first bases 231, a pair of rotating members 233 rotatably disposed on opposite sides of each first base 231, and a pair of connecting members (not shown in the figure). The rotating shaft includes two pairs of second rotating shafts 250, which are arranged along the rotation axis between the rotating members 233 and the first bases 231. The torque assembly 25b includes a pair of first torque members 252, a pair of third torque members 259, a first abutment member 254, and a pair of... The second abutment 257; two pairs of second rotating shafts 250, a pair of first torque members 252, a pair of third torque members 259, a first abutment 254 and a pair of second abutment members 257 are located between two first bases 231. The ends of the two pairs of second rotating shafts 250 that are far apart from each other are respectively connected to two rotating shaft mounting members 251. The pair of first torque members 252 are rotatably sleeved on one pair of second rotating shafts 250 respectively. The pair of third torque members 259 are rotatably sleeved on the other pair of second rotating shafts 250 respectively. The two first abutment members 254 are slidably sleeved on the two pairs of second rotating shafts 250 along the axial direction of the second rotating shafts 250 respectively. The pair of first torque members 252 rotatably abut against the first abutment members 254 respectively. The pair of second abutment members 257 are slidably sleeved on the pair of second rotating shafts 250 along the axial direction of the other pair of second rotating shafts 250. The pair of second abutment members 257 clamp the pair of third torque members 259. The rotating component 23, elastic component 24, and support component 28 of the rotating shaft device 22b in the third embodiment have the same structure as those in the first embodiment, and will not be described again here.

[0122] Each pair of second rotating shafts 250 are spaced parallel to each other. Each second rotating shaft 250 includes a first rotating shaft segment 2501, a second rotating shaft segment 2503, and a third rotating shaft segment 2505. The first rotating shaft segment 2501, the second rotating shaft segment 2503, and the third rotating shaft segment 2505 are coaxial. The outer diameters of the first rotating shaft segment 2501 and the third rotating shaft segment 2505 are both smaller than the outer diameter of the second rotating shaft segment 2503. The outer diameter of the third rotating shaft segment 2505 is smaller than the inner diameter of the abutment hole 2514 of the rotating shaft mounting component 251. The axial length of the first rotating shaft segment 2501 is greater than the axial length of the second rotating shaft segment 2503.

[0123] The two second cams 2540 of the first abutment member 254 are respectively sleeved on one of the pair of second rotating shafts 250, and the two second cams 2540 of the first abutment member 254 rotatably abut against the second abutting cams 2523 of the pair of first torque members 252; each third torque member 259 includes two fourth abutting cams 2593 provided at its opposite ends, and the two fourth abutting cams 2593 of the third torque member 259 rotatably sleeved on the corresponding pair of second rotating shafts 250; each second abutment member 257 includes two third cams 2570 slidably sleeved on the pair of second rotating shafts 250, wherein the two third cams 2570 of one second abutment member 257 rotatably abut against the two third cams 2570 on one side of the pair of third torque members 259, and the two third cams 2570 of the other second abutment member 257 rotatably abut against the two third cams 2570 on the opposite side of the pair of third torque members 259. Specifically, the third torque member 259 includes a third rotating part 2590 rotatably connected to the second rotating shaft 250, two fourth abutting cams 2593 disposed at opposite ends of the third rotating part 2560, and a third connecting part 2595 connected to the third rotating part 2590. The third abutting cams 2593 are rotatably sleeved on the corresponding second rotating shaft 250. The second abutting member 257 includes two third cams 2570 slidably sleeved on a pair of second rotating shafts 250. The pair of second rotating shafts 250 pass through the fourth abutting cams 2593 of the pair of third torque members 259 and the third cams 2570 of the pair of second abutting members 257. The two fourth abutting cams 2593 on the same side abut against the two corresponding third cams 2570 rotatably. The third rotating part 2590 is provided with a sixth shaft hole 2592 along the axial direction of the second rotating shaft 250, and the second rotating shaft 250 passes through the sixth shaft hole 2592; the third connecting part 2595 is slidably connected to the connector at one end away from the third rotating part 2590; two fourth abutting cams 2593 are provided at opposite ends of the third rotating part 2590 along the axial direction of the sixth shaft hole 2592, the axis of the two fourth abutting cams 2593 is collinear with the axis of the sixth shaft hole 2592, and the fourth abutting cams 2593 and the third cam 2570 cooperate to abut against each other. The first elastic member 241 is compressed and disposed between the first abutment member 254 and one of the third abutment members 257. The first elastic member 241 provides elastic force between the one of the second abutment members 257 and a pair of third torque members 259 and elastic force between the first abutment member 254 and a pair of first torque members 252. The second elastic member 243 is compressed and disposed between another second abutment member 257 and a corresponding pivot mounting member 251. The second elastic member 243 provides elastic force between the second abutment member 257 and a pair of third torque members 259 and elastic force between the pivot mounting member 251 and a pair of corresponding rotating members 233.

[0124] The third torque member 259 and the corresponding connecting member are slidably connected by a guide groove and a guide rail. The guide groove is provided on one of the connecting member and the third torque member 259, and the guide rail is provided on the other. In this embodiment, the connecting member has a third guide groove along the axial direction perpendicular to the second rotating shaft 250, and the third connecting portion 2595 of the third torque member 259 has third guide rails 2597 on opposite sides. The third guide rails 2597 are slidably inserted into the second guide groove of the corresponding connecting member.

[0125] The third rotating part 2590 is a third rotating cylinder 2591 sleeved on the second rotating shaft 250. Two fourth abutting cams 2593 are located at opposite ends of the third rotating cylinder 2591. The axis of the two fourth abutting cams 2593 is collinear with the axis of the third rotating cylinder 2591. The second abutting member 257 also includes two second abutting cylinders 2571 respectively sleeved on the two second rotating shafts 250 and a second connecting part 2576 connecting the two second abutting cylinders 2571. The third cam 2570 is located at the end of the second abutting cylinder 2571 facing the third torque member 259. The axis of the third cam 2570 is collinear with the axis of the second abutting cylinder 2571. Specifically, the fourth abutting cam 2593 includes a concave-convex surface located on one end of the third rotating cylinder 2591 facing the second abutting member 257. This concave-convex surface includes a fifth protrusion 2594 and a fifth recess 2596, which are arranged sequentially at intervals along the circumference of the third rotating cylinder 2591. The number of fifth protrusions 2594 and fifth recesses 2596 can be configured as needed. For example, the fourth abutting cam 2593 may include one fifth protrusion 2594 and one fifth recess 2596, two fifth protrusions 2594 and two fifth recesses 2596, three fifth protrusions 2594 and three fifth recesses 2596, or four fifth protrusions 2594 and four fifth recesses 2596, etc. In this embodiment, the fourth abutting cam 2593 includes three fifth protrusions 2594 and three fifth recesses 2596 arranged circumferentially along the third rotating cylinder 2591. Each second abutting cylinder 2571 has a third cam 2570 at one end facing the third torque member 259. The third cam 2570 includes a concave-convex surface at one end of the second abutting cylinder 2571 facing the third torque member 259. The concave-convex surface includes a fourth protrusion 2573 and a fourth recess 2575, which are arranged sequentially at intervals along the circumference of the second abutting cylinder 2571. The number of fourth protrusions 2573 and the number of fourth recesses 2575 can be set as needed. For example, the third cam 2570 may include one fourth protrusion 2573 and one fourth recess 2575, two fourth protrusions 2573 and two fourth recesses 2575, three fourth protrusions 2573 and three fourth recesses 2575, or four fourth protrusions 2573 and four fourth recesses 2575, etc. In this embodiment, the third cam 2570 includes three fourth protrusions 2573 and three fourth recesses 2575 arranged circumferentially along the second abutment cylinder 2571.

[0126] The fourth shaft hole 2572 of the second abutment cylinder 2571 is a through hole for the third cam 2570. The second connecting portion 2576 is provided with mutually spaced second guide holes 2578, which are parallel to the fourth shaft hole 2572. In this embodiment, the axis of the two fourth shaft holes 2572 and the axis of the two second guide holes 2578 are located in the same plane. In some embodiments, the axis of the two fourth shaft holes 2572 is coplanar, the axis of the two second guide holes 2578 is coplanar, and the plane containing the axis of the two second guide holes 2578 is parallel to the plane containing the axis of the two fourth shaft holes 2572. Preferably, the opposite end faces of the second abutment member 257 form arc surfaces to facilitate the folding or unfolding of the rotating shaft device.

[0127] The rotating shaft device 22b further includes a third linkage component 26b, which includes third gears 261b respectively disposed on a pair of third torque members 259 and a third driven gear set 263b disposed between the two third gears 261b. The third gear 261b of each third torque member 259 meshes with the third driven gear set 263b, so that the pair of third torque members 259 can rotate synchronously. In this embodiment, each of the two third torque members 259 is provided with a third gear 261b, and a third driven gear set 263b is provided between the two third torque members 259, with each third gear 261b meshing with the third driven gear set 263b. When one of the third torque members 259 rotates around the corresponding second rotating shaft 250, it drives the third gear 261b on that third torque member 259 to rotate around the second rotating shaft 250, and through the third driven gear set 263b, drives the other third torque member 259 to rotate synchronously around the corresponding second rotating shaft 250. The third linkage component 26b of the rotating shaft device 22b can realize the synchronous folding or flattening of the two third torque members 259 of the torque component, the synchronous folding or flattening of the two pairs of rotating members 233 of the rotating component 23, and the synchronous folding or flattening of the two side support members of the support component, so as to realize the synchronous folding or flattening of the two shells.

[0128] Specifically, a third gear 261b is provided on the outer peripheral wall of the third rotating cylinder 2591 opposite to the third connecting part 2595, and the axis of the third gear 261b is collinear with the axis of the third rotating cylinder 2591. The third driven gear set 263b includes two meshing third driven gears and third connecting shafts respectively passing through the two third driven gears. Each third driven gear is coaxial with the corresponding third connecting shaft. The third gears 261b on the two third torque members 259 mesh with the two third driven gears respectively, so that the pair of third torque members 259 can rotate synchronously. The third driven gear includes a sleeve sleeved on the corresponding second connecting shaft 2731, and the teeth of the third driven gear are arranged in a circle around the outer peripheral wall of the sleeve.

[0129] When assembling the rotating shaft device 22b, since the assembly method of the rotating shaft device 22b is similar to that of the rotating shaft device 22 in the first embodiment, only a brief description of the assembly process of the rotating device 22b is given here: Assemble the first linkage component 26, sleeve the first abutment member 254 on the first connecting shaft 2631, so that the two second cams 2540 respectively mesh with the second abutment cams 2523 of the two first torque members 252; insert the first shaft section 2501 of one pair of second rotating shafts 250 into the two second shaft holes 2562 and the two first shaft holes 2522 of the first abutment member 254 respectively; sleeve a pair of first elastic members 241 on the second shaft section 2503 of the pair of second rotating shafts 250 respectively; and install a pair of third torque members... The third gear 261b of 259 meshes with the two second driven gears of the third driven gear set 263b; two second abutment members 257 are respectively sleeved on opposite sides of the third driven gear set 263b, such that the two third cams 2570 of one second abutment member 257 respectively cooperate with and abut against the two fourth abutment cams 2593 on one side of the two third torque members 259, and the two third cams 2570 of the other second abutment member 257 respectively cooperate with and abut against the two fourth abutment cams 2593 on the opposite side of the two third torque members 259; the first shaft section 2501 of another pair of second shafts 250 is respectively inserted into the two fourth shaft holes 2572 of one second abutment member 257 and the pair of third torque members 259. The sixth shaft hole 2592 of component 259 and the two fourth shaft holes 2572 of another second abutment 257 are respectively fitted onto the second shaft segments 2503 of the other pair of second connecting shafts 2731; the third shaft segments 2505 of a pair of second shafts 250 inserted in the first abutment 254 are respectively inserted into the two fourth shaft holes 2572 of the second abutment 257 that are opposite to the two second elastic components 243; the two shaft mounting components 251 are respectively fitted onto the opposite ends of the two pairs of second shafts 250, the rotating assembly 23 is assembled, and the two first bases 231 are placed at the opposite ends of the torque assembly, so that the guide rails 2314 of the two first bases 231 are respectively inserted into the two shaft mounting components 251. In the guide groove 2516, the two first abutting cams 2510 of each rotating shaft mounting member 251 rotatably abut against the first cams 2330 of the corresponding two rotating members 233. The two connecting members are placed on opposite sides of the torque assembly. The first guide rails 2527 of the two first torque members 252 are respectively inserted into the first guide grooves of the two connecting members. The third guide rails 2597 of the two third torque members 259 are respectively inserted into the third guide grooves of the two connecting members. The two rotating members 233 on each first base 231 are rotatably connected to the two connecting members. The support assembly is then assembled to the front of the rotating assembly 23 and the torque assembly 25. The two first bases 231 are then fixedly connected to the back cover.

[0130] At this time, two first elastic members 241 are respectively sleeved on one of the pair of second rotating shafts 250, and the two first elastic members 241 are clamped by the first abutment member 254 and one of the second abutment members 257. One end of the first elastic member 241 elastically pushes the first abutment member 254 against a pair of first torque members 252, so that the two second cams 2540 of the first abutment member 254 respectively cooperate with the two second abutting cams 2523 of the pair of first torque members 252 and abut against each other. The side of the pair of first torque members 252 away from the first abutment member 254 abuts against the corresponding rotating shaft mounting member 251, so that the two first abutting cams 2510 of the rotating shaft mounting member 251 respectively cooperate with the first cams 2330 of a pair of rotating members 233 and abut against each other. The pair of rotating members 233 abut against the corresponding first base 231. The other end of the first elastic member 241 pushes against one of the second abutment members 257, so that the two third cams 2540 of the one of the second abutment members 257... Cam 2570 engages with two fourth abutting cams 2593 on one side of a pair of third torque members 259 and abuts against each other; two second elastic members 243 are respectively sleeved on another pair of second rotating shafts 250, and the two second elastic members 243 are clamped by another second abutting member 257 and the corresponding rotating shaft mounting member 251. One end of the second elastic member 243 elastically pushes the second abutting member 257 against a pair of third torque members 259, so that the two third cams 2570 of the second abutting member 257 engage with two fourth abutting cams 2593 on the other side of a pair of third torque members 259 and abut against each other. The other end of the second elastic member 243 elastically pushes the corresponding rotating shaft mounting member 251 against a pair of rotating members 233, so that the two first abutting cams 2510 of the rotating shaft mounting member 251 engage with the first cams 2330 of a pair of rotating members 233 and abut against each other, and the pair of rotating members 233 abut against the corresponding first base 231.

[0131] When the rotating shaft device 22b is bent from its flattened state, one of the connecting members 234 is bent relative to the first base 231 toward the other connecting member 234. This connecting member 234 drives the rotating member 233 to rotate relative to the first base 231, and also drives the corresponding first torque member 252 and third torque member 259 to rotate around the corresponding second rotating shaft 250, so that the two first torque members 252 and the two third torque members 259 move closer together. The first torque member 252 pushes against the first abutment member 254, moving axially along the second rotating shaft 250, thus compressing the first elastic member 241. Simultaneously, the second torque member 259 pushes against the two second abutment members 257, moving axially along the second rotating shaft 250, thus compressing the first elastic member 241 and the second elastic member 243 respectively. The first gear 261 on the first torque member 252 rotates around the second rotating shaft 250 to... The first driven gears 2630 of the first driven gear set 263 rotate, which in turn drives the first gear 261 on another first torque member 252 to rotate around the corresponding second shaft 250, thereby achieving synchronous folding of the two first torque members 252; the third gear 261b on the third torque member 259 rotates around the second shaft 250 to drive the two third driven gears of the third driven gear set 263b to rotate, which in turn drives the third gear 261b on another third torque member 259 to rotate around the corresponding second shaft 250, thereby achieving synchronous folding of the two third torque members 259; at the same time, the rotating members 233 on the two first bases 231 rotate synchronously and move closer to each other, so as to drive the two side support members to move closer to each other synchronously, until the front of the support assembly 28 forms a teardrop shape in cross-section.

[0132] When the rotating shaft device 22b is unfolded from its fully bent state, one of the connecting members 234 is unfolded relative to the first base 231 away from the other connecting member 234. This connecting member 234 drives the rotating member 233 to rotate relative to the first base 231, and drives the corresponding first torque member 252 and third torque member 259 to rotate around the corresponding first rotating shaft 253, so that the two first torque members 252 and the two third torque members 259 move away from each other. The first torque member 252 pushes against the first abutment member 254, moving axially along the second rotating shaft 250 and compressing the first elastic member 241. The third torque member 259 simultaneously pushes against a pair of second abutment members 257, moving axially along the second rotating shaft 250 and compressing the first elastic member 241 and the second elastic member 243 respectively. The first gear 261 on the first torque member 252 rotates around the first... The rotation of the two rotating shafts 250 drives the two first driven gears of the first driven gear set 263 to rotate. The first driven gear set 263 drives the first gear 261 on another first torque member 252 to rotate around the corresponding second rotating shaft 250, thereby achieving the synchronous unfolding of the two first torque members 252. The third gear 261b on the third torque member 259 rotates around the second rotating shaft 250 to drive the two third driven gears of the third driven gear set 263b to rotate. The third driven gear set 263b drives the third gear 261b on another third torque member 259 to rotate around the corresponding second rotating shaft 250, thereby achieving the synchronous unfolding of the two third torque members 259. The two rotating members 233 of the rotating assembly 23 rotate synchronously relative to the first base 231 and unfold to each other, so as to drive the support assembly to unfold to each other until the front of the support assembly is flattened.

[0133] During the folding or unfolding process of the rotating shaft device 22b, the frictional torque between the second abutting cam 2523 and the second cam 2540, the frictional torque between the fourth abutting cam 2593 at each end of the third torque member 259 and the third cam 2570, the frictional torque between the first cam 2330 of each rotating shaft mounting member 251 and the corresponding first abutting cam 2510, the frictional resistance between the end of each first torque member 252 away from the second abutting cam 2523 and the rotating shaft mounting member 251, and the frictional resistance between each rotating member 233 and the corresponding first base 231 limit the two side supports to a specific angle between 70 degrees and 130 degrees.

[0134] The present invention also provides a folding housing with the above-mentioned rotating shaft device 22b, wherein the rotating shaft device 22b is located between two housings, and the two opposite sides of the rotating shaft device 22b are respectively connected to the two housings of the folding housing.

[0135] The present invention also provides an electronic device equipped with the aforementioned pivot device 22b, the electronic device comprising a pivot device 22b, a flexible screen and two housings, the pivot device 22b being located between the two housings, the opposite sides of the pivot device 22b being respectively connected to the two housings, and the back of the flexible screen being attached to the front of the pivot device 22b and the front of the two housings.

[0136] The rotating shaft device 22b of the present invention achieves synchronous folding or unfolding through a rotating assembly and a torque assembly. Because there is frictional resistance between the first torque member 252 and the first abutment member 254, frictional resistance between a pair of third torque members 259 and two second abutment members 257, and frictional resistance between the rotating member 233 and the rotating shaft mounting member 251, when the electronic device is not subjected to external force, these frictional resistances can limit the first torque member 252, the third torque member 259, and the connecting member 233 to remain stationary relative to the first base 231, thereby achieving the suspension of the two side support members and giving the electronic device a suspension effect. Furthermore, the frictional resistance between the rotating member 233 and the first base 231, and the frictional resistance between the first torque member 252 and the rotating shaft mounting member 251... The hinge mounting members 251 have frictional resistance to improve the hovering effect of the electronic device. In addition, the two opposite ends of the first elastic member 241 elastically abut against the first support member 254 and one of the second support members 257, respectively, and the two opposite ends of the second elastic member 243 elastically abut against the other second support member 257 and the corresponding hinge mounting member 251, making the hinge device 22b compact and reducing its volume. This reduces the internal space occupied by the hinge device 22b in the folding housing, which is beneficial not only for the layout of other components such as the motherboard or battery, but also for miniaturization. The hinge device 22b has a simple structure, low manufacturing cost, high reliability of connection between components, and improved overall strength.

[0137] The above are the embodiments of the present invention. It should be noted that, for those skilled in the art, many improvements and modifications can be made without departing from the principle of the embodiments of the present invention, and these improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. A rotating shaft device, characterized in that, The rotating shaft device includes: A rotating assembly includes a first base and a rotating component, the rotating component being rotatably connected to the first base, the rotating component including a first cam; A torque assembly includes a rotating shaft, a rotating shaft mounting member, a first torque member, and a first abutting member. The axis of the rotating shaft is parallel to the axis of rotation between the rotating member and the first base. The rotating shaft mounting member is slidably sleeved on the rotating shaft along its axial direction. The rotating shaft mounting member includes a first abutting cam. The first torque member is rotatably connected to the rotating shaft. The first abutting member is slidably sleeved on the rotating shaft along its axial direction. An elastic component includes a first elastic element, a first abutting element located between a first torsion element and the first elastic element, the first elastic element elastically pushing the first abutting element against the first torsion element, one end of the rotating shaft mounting abutting against the first elastic element, and the other end of the rotating shaft mounting abutting against the rotating element, the first elastic element elastically pushing the rotating shaft mounting so that the first abutting cam and the first cam rotatably abut against each other.

2. The rotating shaft device according to claim 1, characterized in that, The rotating shaft mounting component is slidably connected to the first base along the axial direction of the rotating shaft, and the first elastic member elastically pushes the rotating shaft mounting component against the rotating component, so that the side of the rotating component away from the rotating shaft mounting component abuts against the first base.

3. The rotating shaft device according to claim 1, characterized in that, When the first torque member rotates around the pivot, the first torque member pushes the first abutment member to move axially along the pivot to compress the first elastic member.

4. The rotating shaft device according to claim 3, characterized in that, The first torque member includes a second abutting cam, the first abutting member includes a second cam, the rotating shaft passes through the second abutting cam and the second cam, and the second cam and the second abutting cam rotatably abut against each other.

5. The rotating shaft device according to claim 4, characterized in that, The rotating assembly includes two first bases, each first base having a rotating member on each of its opposite sides, and each rotating member rotatably abutting against the corresponding first base; the torque assembly is disposed between the two first bases, and the torque assembly includes two rotating shaft mounting members, each rotating shaft mounting member being slidably connected to the corresponding first base along the axial direction of the rotating shaft, each rotating shaft mounting member including two first abutting cams, and the two first abutting cams of each rotating shaft mounting member rotatably abutting against the first cams of the two corresponding rotating members.

6. The rotating shaft device according to claim 5, characterized in that, The torque assembly includes a pair of parallel-spaced first shafts, and the torque assembly includes a pair of first torque members. Two shaft mounting members are slidably sleeved on opposite ends of the pair of first shafts. The pair of first torque members are rotatably sleeved on the pair of first shafts. The first abutment member includes two second cams respectively sleeved on the pair of first shafts. The two second cams rotatably abut against the second abutment cams of the pair of first torque members.

7. The rotating shaft device according to claim 6, characterized in that, The elastic component further includes a second elastic element, the first elastic element being clamped between the first abutment and one of the pivot mounting members, and the second elastic element being clamped between the other pivot mounting member and a pair of the first torsion members.

8. The rotating shaft device according to claim 7, characterized in that, The torque assembly further includes a second base, which is sleeved on a pair of first rotating shafts. A pair of first torque members abut against the second base on the side opposite to the first abutment member. The second elastic member is clamped by the second base and another rotating shaft mounting member.

9. The rotating shaft device according to claim 6, characterized in that, The rotating shaft device further includes a first linkage component, which includes a first gear disposed on a pair of first torque members and a first driven gear set disposed between the two first gears. The first gears on the pair of first torque members respectively mesh with the first driven gear set, so that the pair of first torque members rotate synchronously.

10. The rotating shaft device according to claim 5, characterized in that, The rotating assembly further includes two connecting members located on opposite sides of the torque assembly. The ends of the two rotating members on the same side away from the first base are rotatably connected to the corresponding connecting members, and the end of the first torque member away from the corresponding first rotating shaft is slidably connected to the corresponding connecting member.

11. The rotating shaft device according to claim 5, characterized in that, The torque assembly includes two pairs of second shafts, which are arranged along the axis of rotation between the rotating member and the first base. The torque assembly also includes a pair of second torque members and a second abutment member. The two pairs of second shafts, a pair of first torque members, a pair of second torque members, the first abutment member, and the second abutment member are located between the two first bases. The opposite ends of the two pairs of second shafts are respectively connected to the shaft mounting member. The pair of first torque members are rotatably fitted onto one pair of second shafts, and the pair of second torque members are rotatably fitted onto the other pair of second shafts. The first abutment member is slidably fitted onto one pair of second shafts, and the second abutment member is slidably fitted onto the other pair of second shafts.

12. The rotating shaft device according to claim 11, characterized in that, The second abutment includes two third cams respectively sleeved on another pair of second rotating shafts, and each second torque member includes a third abutting cam sleeved on the corresponding second rotating shaft. The two third cams of the second abutment are rotatably abutted against the third abutting cams of the pair of second torque members respectively.

13. The rotating shaft device according to claim 11, characterized in that, The torque assembly further includes a third base, which is connected between two pairs of second shafts. One pair of first torque members abuts against the third base on the side opposite to the first abutment member, and the other pair of second torque members abuts against the corresponding shaft mounting member on the side opposite to the second abutment member.

14. The rotating shaft device according to claim 13, characterized in that, The elastic component includes two first elastic elements and two second elastic elements. The two first elastic elements are respectively sleeved on one pair of second rotating shafts, and the two second elastic elements are respectively sleeved on the other pair of second rotating shafts. The two second elastic elements are clamped by the third base and the second abutment. One end of the second elastic element elastically pushes against the second abutment and abuts against a pair of second torsion members, so that the second torsion members abut against the corresponding rotating shaft mounting members, so that the rotating shaft mounting members push against the corresponding rotating members and abut against the corresponding first base. The other end of the second elastic element abuts against the third base.

15. The rotating shaft device according to claim 11, characterized in that, The rotating shaft device further includes a second linkage component, which includes a second gear disposed on a pair of second torque members and a second driven gear set disposed between the two second gears. The second gear of each second torque member meshes with the second driven gear set, so that the pair of second torque members rotate synchronously.

16. The rotating shaft device according to claim 5, characterized in that, The rotating assembly includes two pairs of second rotating shafts, which are arranged along the rotation axis between the rotating member and the first base. The torque assembly also includes a pair of third torque members and a pair of second abutment members. The two pairs of second rotating shafts, the pair of first torque members, the pair of third torque members, the first abutment members, and the pair of second abutment members are located between the two first bases. The opposite ends of the two pairs of second rotating shafts are respectively connected to the two rotating shaft mounting members. The pair of first torque members are rotatably sleeved on one pair of second rotating shafts, and the pair of third torque members are rotatably sleeved on the other pair of second rotating shafts. The first abutment members are slidably sleeved on one pair of second rotating shafts, and the pair of second abutment members are slidably sleeved on the other pair of second rotating shafts. The pair of second abutment members clamp the pair of third torque members.

17. The rotating shaft device according to claim 16, characterized in that, The third torque member includes two fourth abutting cams, which are respectively disposed at opposite ends of the third torque member along the axial direction of the second rotating shaft. Each second abutting member includes two third cams, wherein the two third cams of one second abutting member rotatably abut against the two fourth abutting cams on one side of a pair of third torque members, and the two third cams of the other second abutting member rotatably abut against the two fourth abutting cams on the opposite side of a pair of third torque members.

18. The rotating shaft device according to claim 17, characterized in that, The elastic component includes two first elastic elements and two second elastic elements. The two first elastic elements are respectively sleeved on one of a pair of second rotating shafts. The two first elastic elements are clamped by a first abutment and one of the second abutments. One end of each first elastic element elastically pushes against the first abutment against a pair of first torque elements, such that the two second cams of the first abutment respectively engage with and abut against the two second abutting cams of the pair of first torque elements. The other end of each first elastic element pushes against one of the second abutments, such that the two third cams of the second abutment respectively abut against the two fourth abutments on one side of one of the pair of third torque elements. The cams engage and abut against each other; two second elastic elements are respectively sleeved on another pair of second rotating shafts, and the two second elastic elements are clamped by another second abutting member and the corresponding rotating shaft mounting member. One end of the second elastic element elastically pushes the other second abutting member against a pair of third torque members, so that the two third cams of the other second abutting member engage with the two fourth abutting cams on the other side of the pair of third torque members and abut against each other. The other end of the second elastic element elastically pushes the corresponding rotating shaft mounting member against a pair of rotating members, so that the two first abutting cams of the rotating shaft mounting member engage with the first cams of the pair of rotating members and abut against each other.

19. A folding shell, characterized in that, The folding housing includes two frames and a pivot device as described in any one of claims 1-18, wherein the pivot device is located between the two frames and the opposite sides of the pivot device are respectively connected to the two frames.

20. An electronic device, characterized in that, The electronic device includes a hinge device as described in any one of claims 1-18, a flexible screen, and two frames. The hinge device is located between the two frames, and the opposite sides of the hinge device are respectively connected to the two frames. The back of the flexible screen is attached to the front of the hinge device and the front of the frames.

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