hinge assembly, folding housing and electronic devices

Abstract

This invention provides a rotating shaft assembly, comprising a base, a first rotating mechanism, a second rotating mechanism, and a damping mechanism. The first rotating mechanism is rotatably connected to one side of the base; the second rotating mechanism is rotatably connected to the opposite side of the base. The damping mechanism includes a stop member slidably connected to the base and a first elastic member. The first rotating mechanism and the stop member are rotatably connected via a first arcuate rail and a first arcuate groove. The second rotating mechanism and the stop member are rotatably connected via a second arcuate rail and a second arcuate groove. The axis of the first arcuate groove is parallel to the axis of the second arcuate groove. The first elastic member has a pre-elastic force that causes the stop member to abut against the first rotating mechanism and / or the second rotating mechanism. This invention also provides a folding housing and an electronic device.

Description

Technical Field

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

[0002] With the development of display equipment, flexible displays have emerged, and foldable screen devices equipped with these displays are becoming increasingly popular due to their unique shapes and diverse functions. Currently, flexible displays employ both inward and outward folding mechanisms, and the flexible displays in related technologies are generally supported by hinge mechanisms. However, existing hinge mechanisms typically use two side support plates and a central support plate to support the flexible display, resulting in a complex structure, large size, and significant space occupation within the foldable screen device. Summary of the Invention

[0003] This application provides a hinge assembly, a foldable housing on which the hinge assembly is provided, and an electronic device on which the foldable housing is provided.

[0004] This application provides a rotating shaft assembly, which includes a base, a first rotating mechanism, a second rotating mechanism, and a damping mechanism. The first rotating mechanism is rotatably connected to one side of the base; the second rotating mechanism is rotatably connected to the opposite side of the base; the damping mechanism includes a stop member and a first elastic member slidably connected to the base. The first rotating mechanism and the stop member are rotatably connected through the cooperation of a first arc track and a first arc groove. The second rotating mechanism and the stop member are rotatably connected through the cooperation of a second arc track and a second arc groove. The axis of the first arc groove is parallel to the axis of the second arc groove. The first elastic member has a pre-elastic force that causes the stop member to abut against the first rotating mechanism and / or the second rotating mechanism.

[0005] This application also provides a folding housing, which includes a pivot assembly and two frames. The pivot assembly is located between the two frames. The end of the first rotating mechanism away from the base is connected to one of the frames, and the end of the second rotating mechanism away from the base is connected to the other frame.

[0006] This application also provides an electronic device, which includes a flexible screen, two frames and a hinge assembly, the hinge assembly being located between the two frames, a first rotating mechanism having one end away from the base connected to one of the frames, a second rotating mechanism having one end away from the base connected to the other frame, and the flexible screen being connected to the two frames and the hinge assembly.

[0007] The first elastic element of the rotating shaft assembly of the present invention elastically pushes against the abutting element, so that the abutting element abuts against the first rotating mechanism and the second rotating mechanism. When the first rotating mechanism rotates relative to the base, the frictional resistance between the abutting element and the first rotating mechanism can position the first rotating mechanism to rotate relative to the base. When the second rotating mechanism rotates relative to the base, the frictional resistance between the abutting element and the second rotating mechanism can position the second rotating mechanism to rotate relative to the base. This results in better damping effect of the rotating shaft assembly. In addition, the damping mechanism has a simple structure, which reduces manufacturing costs. Furthermore, the first and second rotating mechanisms are directly rotatably connected to the abutting element, making the connection between the abutting element and the first and second rotating mechanisms of the rotating shaft assembly compact, reducing the volume of the rotating shaft assembly, thereby reducing the internal space occupied by the rotating shaft assembly in the folding shell. This is beneficial for the layout of other components such as the motherboard or battery in electronic devices and promotes miniaturization. Attached Figure Description

[0008] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described 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 schematic diagram of an electronic device in one 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 view of the rotating shaft assembly in the middle;

[0013] Figure 5 yes Figure 4 A three-dimensional structural diagram of the rotating shaft assembly from another perspective;

[0014] Figure 6 yes Figure 4 An exploded view of the three-dimensional structure of the rotating shaft assembly in the diagram;

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

[0016] Figure 8 yes Figure 6A further exploded three-dimensional structural diagram of the rotating shaft assembly;

[0017] Figure 9 yes Figure 7 A further exploded three-dimensional structural diagram of the rotating shaft assembly;

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

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

[0020] Figure 12 yes Figure 10 Enlarged three-dimensional structural diagram of the base and damping mechanism;

[0021] Figure 13 yes Figure 12 An enlarged schematic diagram of the three-dimensional structure of the base;

[0022] Figure 14 yes Figure 12 An enlarged three-dimensional structural diagram of the abutment component;

[0023] Figure 15 yes Figure 10 An enlarged three-dimensional schematic diagram of the first rotating mechanism in the diagram;

[0024] Figure 16 yes Figure 11 An enlarged three-dimensional schematic diagram of the second rotating mechanism in the diagram;

[0025] Figure 17 yes Figure 8 A three-dimensional structural diagram of the supporting mechanism from another perspective;

[0026] Figure 18 yes Figure 10 A magnified three-dimensional schematic diagram of the synchronization mechanism in the diagram;

[0027] Figure 19 yes Figure 11 A magnified three-dimensional schematic diagram of the synchronization mechanism in the diagram;

[0028] Figure 20 yes Figure 4 A partial three-dimensional sectional view of the rotating shaft assembly in the middle;

[0029] Figure 21 yes Figure 20 A cross-sectional view of the pivot assembly in the middle;

[0030] Figure 22 yes Figure 4Another partial perspective sectional view of the pivot assembly in the middle;

[0031] Figure 23 yes Figure 4 A cross-sectional view of the pivot assembly in the middle;

[0032] Figure 24 yes Figure 1 A three-dimensional structural diagram of the electronic devices in a fully folded state;

[0033] Figure 25 yes Figure 24 A three-dimensional structural diagram of the rotating shaft assembly in the diagram;

[0034] Figure 26 yes Figure 25 A three-dimensional structural diagram of the rotating shaft assembly from another perspective;

[0035] Figure 27 yes Figure 25 A partial three-dimensional sectional view of the rotating shaft assembly.

[0036] Main labeling descriptions: 100, Electronic device; 30, Flexible screen; 31, Bendable area; 33, Non-bendable area; 20, Foldable shell; 21, Frame; 211, Front; 214, Side; 215, End face; 216, Mounting groove; 22, Rotating shaft assembly; 23, Base; 230, Substrate; 2302, First guide groove; 2304, First receiving groove; 2305, Second receiving groove; 2306, Second guide groove; 2307, Protrusion; 231, First connecting part; 2310, First arc strip; 232, Second connecting part; 2320, Second arc strip; 234, First positioning part; 2342, First positioning post; 235, Second positioning part; 2352, Second positioning post; 236, First fixing part; 2362, First adjusting shaft; 2364, First fixing hole; 237, Second fixing part; 2372, Second adjusting shaft; 2374, Second fixing hole; 24, Rotating mechanism; 240, First rotating mechanism; 241, First rotating component; 2410, First arc groove; 2411, First connecting part; 2413, First rotating part; 2414, First support part; 2416, First limiting part; 2417, Second limiting part; 2418, First damping part; 243, First connecting component; 2432, Third arc groove; 2434, First connecting hole; 2435, First locking pin; 245, Second rotating mechanism; 246, Second rotating component; 2460, Second arc groove; 2461, Second connecting part; 2463 2464. Second rotating part; 2465. Second support part; 2466. Third limiting part; 2467. Fourth limiting part; 2468. Second damping part; 248. Second connecting piece; 2482. Fourth arc groove; 2484. Second connecting hole; 2485. Second locking post; 25. Damping mechanism; 250. Abutting piece; 2501. First arc rail; 2502. Second arc rail; 2503. First sliding part; 2504. First guide rail; 2505. First extension arm; 2505a. First extension bar; 2505b. First connecting plate; 2506. Second extension arm; 2506a. Second extension bar; 2506b. Second connecting plate; 2507. First abutting top; 2508. Second abutting top; 250 9. First positioning part; 2511. Second positioning part; 255. First elastic element; 27. Support mechanism; 273. First side support element; 2730. First side support plate; 2731. Third arc track; 2733. First adjusting arm; 2734. First adjusting groove; 2734a. First positioning section; 2734b. Second positioning section; 2734c. First opening; 2736. First clearance opening; 275. Second side support element; 2750. Second side support plate; 2751. Fourth arc track; 2753. Second adjusting arm; 2754. Second adjusting groove; 2754a. Third positioning section; 2754b. Fourth positioning section; 2754c. Second opening; 28. Synchronization mechanism; 280. Linkage element;2801, First connecting part; 2802, Second connecting part; 2803, First spiral rail; 2804, First spiral groove; 2804a, First spiral surface; 2805, Second spiral groove; 2805a, Second spiral surface; 2806, Second spiral rail; 2811, Sliding plate; 283, First synchronizing element; 2831, First transmission part; 2831a, First abutting surface; 2831b, First transmission groove; 2815, Second guide rail; 2832, First pushing block; 2833, First transmission block; 2 834. Second transmission block; 2836. Second pushing block; 2836a. Fifth arc groove; 2837. Second elastic element; 2838. First fixed post; 285. Second synchronizing element; 2851. Second transmission part; 2851a. Second abutting surface; 2851b. Second transmission groove; 2852. Third pushing block; 2853. Third transmission block; 2854. Fourth transmission block; 2856. Fourth pushing block; 2856a. Sixth arc groove; 2857. Third elastic element; 2858. Third fixed post. Detailed Implementation

[0037] 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.

[0038] 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.

[0039] 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.

[0040] Please refer to the following: Figures 1 to 3The 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, but is not limited to, flexible displays, flexible touchscreens, flexible touch displays, and other flexible components with corresponding functions, or a flexible component fixedly attached to a flexible support plate, such as a flexible display or flexible touchscreen attached to a flexible steel plate. The flexible screen 30 can be bent or flattened with the folding housing 20. The folding housing 20 includes two frames 21 and a pivot assembly 22 connecting the two frames 21. The two opposite sides of the pivot assembly 22 are respectively connected to the two frames 21, and the two frames 21 are folded or flattened through the pivot assembly 22. The flexible screen 30 includes a bendable area 31 corresponding to the pivot assembly 22, and two non-bendable areas 33 connected to the opposite sides of the bendable area 31. The flexible screen 30 is connected to the two frames 21 and the pivot assembly 22. In this embodiment, the flexible screen 30 is disposed on the front of the two frames 21 and the front of the pivot assembly 22. Specifically, the two non-bending areas 33 of the flexible screen 30 can be connected to the front of the two frames 21 respectively, and the bendable area 31 is connected to the front of the pivot assembly 22. The bendable area 31 of the flexible screen 30 can be bent or flattened with the pivot assembly 22.

[0041] Please refer to the following: Figures 4-11The rotating shaft assembly 22 includes a base 23, a rotating mechanism 24, a damping mechanism 25, and a support mechanism 27. The rotating mechanism 24 includes a first rotating mechanism 240 and a second rotating mechanism 245. The first rotating mechanism 240 is rotatably connected to one side of the base 23, and the second rotating mechanism 245 is rotatably connected to the opposite side of the base 23. The damping mechanism 25 includes a stop member 250 and a first elastic member 255 slidably connected to the base 23 along a first direction. The first rotating mechanism 240 and the stop member 250 are rotatably connected by a first arcuate rail and a first arcuate groove. The first arcuate rail is provided in one of the stop member 250 and the first rotating mechanism 240, and the first arcuate groove is provided in the stop member 250. The second rotating mechanism 245 is rotatably connected to the abutment 250 via a second arcuate rail and a second arcuate groove. The second arcuate rail is located in the other of the abutment 250 and the second rotating mechanism 245. The axis of the first arcuate groove is parallel to the axis of the second arcuate groove. The axis of the first arcuate groove is collinear with the first rotation axis L1 between the first rotating mechanism 240 and the base 23. The axis of the second arcuate groove is collinear with the second rotation axis L2 between the second rotating mechanism 245 and the base 23. The first elastic member 255 has a pre-elastic force that causes the abutment 350 to abut against the first rotating mechanism 240 and / or the second rotating mechanism 245. A support mechanism 27 is connected between the rotating mechanism 24 and the base 237. When the first rotating mechanism 240 and the second rotating mechanism 245 rotate relative to the base 23, the first arc track and the second arc track rotate in the first arc groove and the second arc groove respectively. The frictional resistance between the abutment 250 and the first rotating mechanism 240 and the frictional resistance between the abutment 250 and the second rotating mechanism 245 limits the rotation of the first rotating mechanism 240 and the second rotating mechanism 245 relative to the base 23. This allows the first rotating mechanism 240 to be positioned at any angle between 0 degrees and 90 degrees relative to the base 23, and the second rotating mechanism 245 to be positioned at any angle between 0 degrees and 90 degrees relative to the base 23, thereby realizing the folding or flattening of the support mechanism 27, so that the bendable area 31 can be bent or flattened with the rotating shaft assembly 22.

[0042] 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.

[0043] In this invention, the first elastic element 255 of the rotating shaft assembly 22 elastically pushes against the abutting element 250, so that the abutting element 250 abuts against the first rotating mechanism 240 and the second rotating mechanism 245. When the first rotating mechanism 240 rotates relative to the base 23, the frictional resistance between the abutting element 250 and the first rotating mechanism 240 can position the first rotating mechanism 240 to rotate relative to the base 23. When the second rotating mechanism 245 rotates relative to the base 23, the frictional resistance between the abutting element 250 and the second rotating mechanism 245 can position the second rotating mechanism 245 to rotate relative to the base 23. This results in a better damping effect for the rotating shaft assembly 22. In addition, the damping mechanism 25 has a simple structure, which reduces manufacturing costs. The first rotating mechanism 240 and the second rotating mechanism 245 are directly rotatably connected to the abutment 250, which makes the connection between the abutment 250 of the rotating shaft assembly 22 and the first rotating mechanism 240 and the second rotating mechanism 245 compact, reducing the volume of the rotating shaft assembly 22. This reduces the internal space occupied by the rotating shaft assembly 22 in the folding housing 20, which is beneficial for the layout of other components such as the motherboard or battery in the electronic device 100 and is conducive to miniaturization.

[0044] In this embodiment, the rotating shaft assembly 22 includes two bases 23, two first rotating mechanisms 240, two second rotating mechanisms 245, and two damping mechanisms 25. The two bases 23 are arranged along a first direction (i.e., the X-axis direction) at opposite ends of the rotating shaft assembly 22. Each base 23 is rotatably connected to a first rotating mechanism 240 and a second rotating mechanism 245 on opposite sides, that is, the first rotating mechanisms 240 and the second rotating mechanisms 245 are arranged along the Y-axis direction on both sides of the base 23. Each base 23 is provided with a damping mechanism 25, and the abutment 250 can be positioned relative to the base along the X-axis direction. 23 Sliding, the abutting member 250 on each base 23 simultaneously abuts against the corresponding first rotating mechanism 240 and second rotating mechanism 245 under the elastic pushing force of the first elastic member 255, so that one abutting member 250 can simultaneously limit the rotation of the first rotating mechanism 240 and the second rotating mechanism 245 relative to the base 23, thereby positioning the first rotating mechanism 240 and the second rotating mechanism 245 on each base 23 at any angle between 0 degrees and 180 degrees relative to the base 23, that is, the included angle between the first rotating mechanism 240 and the second rotating mechanism 245 is between 0 degrees and 180 degrees.

[0045] In some embodiments, the rotating shaft assembly 22 may also include only a base 23, a first rotating mechanism 240, a second rotating mechanism 245, and a damping mechanism 25. The first rotating mechanism 240 and the second rotating mechanism 245 are rotatably connected to opposite sides of the base 23, and the abutment member 250 is slidably connected to the base 23 along the X-axis. Under the elastic thrust of the first elastic member 255, the abutment member 250 abuts against the first rotating mechanism 240 and the second rotating mechanism 245, so that the abutment member 250 can simultaneously limit the rotation of the first rotating mechanism 240 and the second rotating mechanism 245 relative to the base 23, thereby positioning the first rotating mechanism 240 and the second rotating mechanism 245 at any angle between 0 degrees and 180 degrees relative to the base 23, that is, the included angle between the first rotating mechanism 240 and the second rotating mechanism 245 is between 0 degrees and 180 degrees. Preferably, the base 23 is located at the middle position of the rotating shaft assembly 22.

[0046] In some embodiments, the rotating shaft assembly 22 may also include three or more bases 23, three or more first rotating mechanisms 240, and three or more second rotating mechanisms 240. The three or more bases 23 are arranged along the X-axis direction. Each base 23 is rotatably connected to a first rotating mechanism 240 and a second rotating mechanism 245 on opposite sides. Each base 23 is provided with a damping mechanism 25. The abutment member 250 can slide relative to the base 23 along the X-axis direction. The abutment member 250 is in a first elastic... Under the elastic pushing force of component 255, it simultaneously abuts against the first rotating mechanism 240 and the second rotating mechanism 245 on the same base 23, so that one abutting component 250 can simultaneously limit the rotation of the first rotating mechanism 240 and the second rotating mechanism 245 relative to the base 23, thereby positioning the first rotating mechanism 240 and the second rotating mechanism 245 on each base 23 at any angle between 0 degrees and 180 degrees relative to the base 23, that is, the included angle between the first rotating mechanism 240 and the second rotating mechanism 245 is between 0 degrees and 180 degrees.

[0047] like Figures 6-12As shown, the first rotating mechanism 240 includes a first rotating member 241 rotatably connected to the base 23 and a first connecting member 243 connected to the first rotating member 241. One end of the first rotating member 241 away from the first connecting member 243 is rotatably connected to the base 23 and the abutment member 250. A first arcuate rail is provided on one of the first rotating member 241 and the abutment member 250, and a first arcuate groove is provided on the other of the first rotating member 241 and the abutment member 250. The axis of the first arcuate groove coincides with the first rotation axis L1 between the first rotating member 241 and the abutment member 250. The second rotating mechanism 245 includes a second rotating member 246 rotatably connected to the base 23 and a second connecting member 248 connected to the second rotating member 246. One end of the second rotating member 246 away from the second connecting member 248 is rotatably connected to the base 23 and the abutment member 250. A second arc track is provided on one of the second rotating member 246 and the abutment member 250, and a second arc groove is provided on the other of the second rotating member 246 and the abutment member 250. The axis of the second arc groove is collinear with the second rotation axis L2 between the second rotating member 246 and the abutment member 250. In this embodiment, the first rotating member 241 has a first arc groove 2410 on one side away from the first connecting member 243, and the second rotating member 246 has a second arc groove 2460 on one side away from the second connecting member 248. The abutting member 250 has a first arc rail 2501 and a second arc rail 2502 on opposite sides, and the first arc rail 2501 and the second arc rail 2502 are rotatably accommodated in the first arc groove 2410 and the second arc groove 2460, respectively.

[0048] In some embodiments, the first rotating member 241 has a first arc track on the side of its end face away from the first connecting member 243 facing the abutment member 250, and the second rotating member 246 has a second arc track on the side of its end face away from the second connecting member 248 facing the abutment member 250. The abutment member 250 has a first arc groove and a second arc groove on opposite sides, and the first arc track and the second arc track are rotatably accommodated in the first arc groove and the second arc groove, respectively.

[0049] In some embodiments, the first rotating member 241 has a first arc groove on the side of its end face away from the first connecting member 243 facing the abutment member 250, and the second rotating member 246 has a second arc rail on the side of its end face away from the second connecting member 248 facing the abutment member 250. The abutment member 250 has a first arc rail and a second arc groove on opposite sides, respectively. The first arc rail is rotatably accommodated in the first arc groove, and the second arc rail is rotatably accommodated in the second arc groove.

[0050] In some embodiments, the first rotating member 241 has a first arc track on the side of its end face away from the first connecting member 243 facing the abutment member 250, and the second rotating member 246 has a second arc groove on the side of its end face away from the second connecting member 248 facing the abutment member 250. The abutment member 250 has a first arc groove and a second arc track on opposite sides, respectively. The first arc track is rotatably accommodated in the first arc groove, and the second arc track is rotatably accommodated in the second arc groove.

[0051] like Figure 6 and Figure 8 As shown, the first rotation axis L1 between the first rotating member 241 and the base 23 and the abutment 250 is parallel to the first direction, and the second rotation axis L2 between the second rotating member 246 and the base 23 and the abutment 250 is parallel to the first direction. The first rotation axis L1 and the second rotation axis L2 are spaced apart from each other, meaning they are parallel but do not coincide. The first rotating member 241 and the second rotating member 246 are misaligned along the first direction. Specifically, the first connection point between the first rotating member 241 and the base 23 and the second connection point between the second rotating member 246 and the base 23 are misaligned along the first direction. In this embodiment, the first rotation axis L1 and the second rotation axis L2 are parallel to the first direction, and the first rotation axis L1 and the second rotation axis L2 are parallel and spaced apart. Specifically, the centerline O of the base 23 is located in the middle between the first rotation axis L1 and the second rotation axis L2, and the centerline O is parallel to both the first and second rotation axis lines L1 and L2; that is, the first and second rotation axis lines L1 and L2 are symmetrical about the centerline O. The centerline O, the first rotation axis line L1, and the second rotation axis line L2 all extend along the X-axis in the three-dimensional coordinate system, and are arranged along the Y-axis. The plane containing the first and second rotation axis lines L1 and L2 is parallel to the XY plane. It should be noted that the first direction refers to the X-axis direction in the three-dimensional coordinate system, the second direction refers to the Y-axis direction, and the third direction refers to the Z-axis direction.

[0052] In some embodiments, the first rotation axis L1 between the first rotating member 241 and the base 23 and the abutment 250 is collinear with the second rotation axis L2 between the second rotating member 246 and the base 23 and the abutment 250, and the first rotational connection between the first rotating member 241 and the base 23 and the second rotational connection between the second rotating member 246 and the base 23 are misaligned along the first direction.

[0053] The support mechanism 27 includes a first side support 273 and a second side support 275. The first side support 273 is slidably and rotatably connected to the base 23 and rotatably connected to the first rotation mechanism 240. The second side support 275 is slidably and rotatably connected to the base 23 and rotatably connected to the second rotation mechanism 245. Specifically, one side of the first side support 273 is slidably and rotatably connected to the base 23, and the opposite side of the first side support 273 is rotatably connected to the first rotation mechanism 240. Similarly, one side of the second side support 275 is slidably and rotatably connected to the base 23, and the opposite side of the second side support 275 is rotatably connected to the second rotation mechanism 245. During the rotation of the first rotating member 241 and the second rotating member 246 relative to the base 23, the first side support member 273 and the second side support member 275 are flattened or folded relative to each other. Specifically, when the first rotating member 241 and the second rotating member 246 rotate relative to the base 23, the first rotating member 241 and the second rotating member 246 move away from each other or move closer to each other, so that the first side support member 273 and the second side support member 275 can be flattened or folded relative to each other. When the first rotating member 241 rotates relative to the abutment member 250 and the base 23, the first arc track 2501 and the second arc track 2502 rotate along the corresponding first arc groove 2410 and second arc groove 2460, respectively, to drive the first side support member 273 and the second side support member 275 to fold or flatten relative to each other, and at the same time, to drive the two frames 21 to fold or flatten relative to each other, so that the bendable area 31 of the flexible screen 30 bends or flattens. During the folding or flattening of the pivot assembly 22, the first elastic member 255 pushes against the abutting member 250, which in turn abuts against the first rotating member 241 and the second rotating member 246, creating frictional resistance between the abutting member 250 and the first rotating member 241 and the second rotating member 246. Without external force, this frictional resistance can limit the rotation of the first rotating member 241 and the second rotating member 246 relative to the base 23, allowing the first side support member 273 and the second side support member 275 to be positioned at any angle between 0 and 120 degrees relative to the base 23, enabling the electronic device 100 to hover at a large angle.

[0054] like Figure 2 and Figure 3As shown, the frame 21 includes a front face 211, a back face, two opposite sides 214, and two end faces 215. A pivot assembly 22 connects the 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 assembly 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 mounting groove 216 at one end of its front face 211 near the pivot assembly 22. The mounting groove 216 passes through the front face 211 of the frame 21, and its opposite ends extend to the opposite sides 214 near the frame 21. The opposite sides of the pivot assembly 22 are respectively accommodated in the mounting grooves 216 of the two frames 21, and the sides of the first rotating member 241 and the second rotating member 246 away from the base 23 are respectively fixedly connected to the corresponding frame 21. The back face of the frame 21 has several receiving spaces (not shown in the figure) for mounting electronic devices such as circuit boards and batteries.

[0055] like Figures 8-14As shown, the base 23 includes a base plate 230, a first connecting portion 231 and a second connecting portion 232 disposed on opposite sides of one end of the base plate 230, a first positioning portion 234 and a second positioning portion 235 disposed on opposite sides of the middle portion of the base plate 230, two first fixing portions 236 disposed on one side of the base plate 230 and spaced apart from each other, and two second fixing portions 237 disposed on the opposite side of the base plate 230 and spaced apart from each other. The first connecting portion 231 and the second connecting portion 232 are arranged at intervals in a first direction. The first connecting portion 231 is located at the end of the substrate 230. The first connecting portion 231 is rotatably connected to the end of the first rotating member 241 away from the first connecting member 243 along the first rotation axis L1. The second connecting portion 232 is rotatably connected to the end of the second rotating member 246 away from the second connecting member 248 along the second rotation axis L2. Specifically, the first connecting portion 231 is provided with a first arc strip 2310. The axis of the first arc strip 2310 is collinear with the first rotation axis L1. The first arc strip 2310 is slidably accommodated in the first arc groove 2410 of the first rotating member 241. The second connecting portion 232 is provided with a second arc strip 2320. The axis of the second arc strip 2320 is collinear with the second rotation axis L2. The second arc strip 2320 is slidably accommodated in the second arc groove 2460 of the second rotating member 246. The abutment member 250 also includes a first sliding portion 2503, which is slidably connected to the base 23 via a first guide groove and a first guide rail. The first guide groove extends parallel to the first rotation axis L1 between the first rotating mechanism 240 and the base 23. The first guide groove is provided in one of the base 23 and the abutment member 250, and the first guide rail is provided in the other. In this embodiment, the base 23 is provided with a first guide groove 2302, and the abutment member 250 is provided with a first guide rail 2504. The first guide groove 2302 extends along a first direction (i.e., the X-axis direction), and the first guide rail 2504 is slidably accommodated in the first guide groove 2302. Specifically, a first receiving groove 2304 is provided on the front side of the substrate 230 near the first connecting portion 231 and the second connecting portion 232. A first sliding portion 2503 is slidably accommodated in the first receiving groove 2304 along a first direction. The substrate 230 has first guide grooves 2302 on opposite sides of the first receiving groove 2304, and also has a first guide groove 2302 in the middle of the bottom surface of the first receiving groove 2304. A first guide rail 2504 is provided on opposite sides of the first sliding portion 2503, and a first guide rail 2504 is provided on the back side of the first sliding portion 2503. The three first guide rails 2504 are slidably accommodated in the three first guide grooves 2503. In some embodiments, the first guide groove 2302 in the middle of the bottom surface of the first receiving groove 2304 and the first guide rail 2504 on the back side of the first sliding portion 2503 can be omitted.The first positioning part 234 and the second positioning part 235 are located on opposite sides of the end of the first receiving groove 2304 away from the first connecting part 231 and the second connecting part 232. The first positioning part 234 and the second positioning part 235 are arranged at intervals from each other in a first direction, that is, the first positioning part 234 is closer to the first connecting part 231 than the second positioning part 235. The first positioning part 234 and the second positioning part 235 are used to position the first elastic member 255 respectively. In this embodiment, the first positioning part 234 is provided with a first positioning post 2342, which extends along the first direction and is used to position one of the first elastic members 255; the second positioning part 235 is provided with a second positioning post 2352, which extends along the first direction and is used to position the other first elastic member 255. Preferably, the first positioning part 234 and the second positioning part 235 are both circular plates, which facilitate the folding or flattening of the first side support member 273 and the second side support member 275. The axis of the circular plate is parallel to the first direction (i.e., the X-axis direction).

[0056] The base 23 has a second receiving groove 2305 and a second guide groove 2306 at the end of its front surface away from the first receiving groove 2304. The second receiving groove 2305 and the second guide groove 2306 extend along a first direction (i.e., the X-axis direction). In this embodiment, the base 23 has second guide grooves 2306 on opposite sides of the second receiving groove 2305. Specifically, the front surface of the base 23 has L-shaped protrusions 2307 on opposite sides of the second receiving groove 2305. The bottom surface of the second receiving groove 2305 and the protrusions 2307 form the second guide groove 2306. The base 23 also has a second guide groove 2306 in the middle of the bottom surface of the second receiving groove 2305. In other embodiments, the second guide groove 2306 in the middle of the bottom surface of the second receiving groove 2305 can be omitted. Two first fixing parts 236 and two second fixing parts 237 are offset from each other in the X-axis direction. The two first fixing parts 236 are located at opposite ends of the second receiving groove 2305. Each first fixing part 236 is provided with a first adjusting shaft 2362, the axis of which is parallel to the first rotation axis L1. Specifically, the first adjusting shaft 2362 is provided on the side of the first fixing part 236 away from the first connecting part 231. The two second fixing parts 237 are located at opposite ends of the first receiving groove 2304. Each second fixing part 237 is provided with a second adjusting shaft 2372, the axis of which is parallel to the first rotation axis L1. Specifically, the second adjusting shaft 2372 is provided on one side of the second fixing part 237. The first fixing part 236 is provided with a first fixing hole 2364 along the Y-axis direction, and the second fixing part 237 is provided with a second fixing hole 2374 along the Y-axis direction.

[0057] It should be noted that the two bases 23 have similar structures, but the difference is that one base 23 omits the second receiving groove 2305, the second guide groove 2306, the protrusion 2307, and a first fixing part 236 and a second fixing part 237 at opposite ends of the second receiving groove 2305, based on the other base 23.

[0058] like Figures 10-12 and Figure 14 As shown, the abutment member 250 also includes a first extension arm 2505 and a second extension arm 2506 disposed on opposite sides of the first sliding portion 2503. The end of the first extension arm 2505 away from the first sliding portion 2503 is provided with a first arcuate rail 2501, and the end of the second extension arm 2506 away from the first sliding portion 2503 is provided with a second arcuate rail 2502. In this embodiment, the first sliding portion 2503 is a sliding plate with opposite sides. The sliding plate has first guide rails 2504 disposed on its opposite sides and back. The first extension arm 2505 is disposed at one end of the sliding plate, and the second extension arm 2506 is disposed at the other end of the sliding plate. The first arcuate rail 2501 is disposed on the side of the first extension arm 2505 away from the first sliding portion 2503, opposite to the first guide rail 2504, and the second arcuate rail 2502 is disposed on the side of the second extension arm 2506 away from the first sliding portion 2503, opposite to the first guide rail 2504. The first extension arm 2505 and the second extension arm 2506 are located on the front of the first sliding part 2503, and the first extension arm 2505 and the second extension arm 2506 are offset along the X-axis direction. Specifically, the first extension arm 2505 includes a first extension bar 2505a extending along the Z-axis direction and a first connecting plate 2505b disposed at one end of the first extension bar 2505a away from the first sliding part 2503, and a first arc rail 2501 disposed at the connection between the first extension bar 2505a and the first connecting plate 2505b; the second extension arm 2506 includes a second extension bar 2506a and a second connecting plate 2506b disposed at one end of the second extension bar 2506a away from the first sliding part 2503, and a second arc rail 2502 disposed at the connection between the second extension bar 2506a and the second connecting plate 2506b. Preferably, the first extension strip 2505a is an arc-shaped strip that extends from the first sliding part 2503 along the Z-axis direction in the XY plane, the first connecting plate 2505b is a circular plate fixedly connected to one end of the first extension strip 2505a away from the first sliding part 2503, and the first arc track 2501 extends from the first extension strip 2505a to the first connecting plate 2505b; the second extension strip 2506a is an arc-shaped strip that extends from the first sliding part 2503 along the Z-axis direction in the XY plane, the second connecting plate 2506b is a circular plate fixedly connected to one end of the second extension strip 2506a away from the first sliding part 2503, and the second arc track 2502 extends from the second extension strip 2506a to the second connecting plate 2506b.

[0059] When the first arc track 2501 and the second arc track 2502 are slidably accommodated in the first arc groove 2410 of the first rotating member 241 and the second arc groove 2460 of the second rotating member 246, respectively, in this embodiment, there is frictional resistance between the first extension arm 2505 and the first rotating member 241, and between the second extension arm 2506 and the second rotating member 246, to limit the rotation of the first rotating member 241 and the second rotating member 246 relative to the base 23. In some embodiments, when the first arc track 2501 and the second arc track 2502 are slidably accommodated in the first arc groove 2410 of the first rotating member 241 and the second arc groove 2460 of the second rotating member 246, there may only be frictional resistance between the first extension arm 2505 and the first rotating member 241, or only between the second extension arm 2506 and the second rotating member 246. This frictional resistance can limit the rotation of the first rotating member 241 and the second rotating member 246 relative to the base 23.

[0060] Preferably, the side of the first extension arm 2505 facing the first rotating member 241 is provided with a damping structure, and / or the side of the first rotating member 241 facing the first extension arm 2505 is provided with a damping structure; the side of the second extension arm 2506 facing the second rotating member 246 is provided with a damping structure, and / or the side of the second rotating member 246 facing the second extension arm 2506 is provided with a damping structure. This damping structure can increase the frictional resistance between the abutment member 250 and the first rotating member 241 and the second rotating member 246, which is beneficial for limiting the positioning of the first rotating member 241 and the second rotating member 246 relative to the abutment member 250. The damping structure can be, but is not limited to, a protrusion, a recess, or a rough surface.

[0061] Furthermore, the abutment member 250 also includes a first abutment top 2507 and a second abutment top 2508. The first abutment top 2507 is used to abut the first rotating member 241, and the second abutment top 2508 is used to abut the second rotating member 246. In this embodiment, the first abutment top 2507 is disposed on the side of the first extension arm 2505 opposite to the first guide rail 2504; preferably, the first abutment top 2507 is connected to the arc surface of the first arc rail 2501 opposite to the arc surface of the first sliding part 2503. The second abutment top 2508 is disposed on the side of the second extension arm 2506 opposite to the first guide rail 2504; preferably, the second abutment top 2508 is connected to the arc surface of the second arc rail 2502 opposite to the arc surface of the first sliding part 2503. In this embodiment, the first abutment top 2507 is a first arcuate strip disposed on the side of the first extension arm 2505 away from the first sliding portion 2503, and the first arcuate strip is connected to the arcuate surface of the first arcuate rail 2501 away from the first sliding portion 2503; the second abutment top 2508 is a second arcuate strip disposed on the side of the second extension arm 2506 away from the first sliding portion 2503, and the second arcuate strip is connected to the arcuate surface of the second arcuate rail 2502 away from the first sliding portion 2503. Preferably, the first abutment top 2507 has arcuate surfaces at opposite ends, and the second abutment top 2508 has arcuate surfaces at opposite ends. The length of the first arcuate rail 2501 extending along the first direction (X-axis direction) is greater than the length of the first abutment top 2507 extending along the first direction (X-axis direction), and the length of the second arcuate rail 2502 extending along the first direction (X-axis direction) is greater than the length of the second abutment top 2508 extending along the first direction (X-axis direction).

[0062] like Figures 10-12 and Figure 14 As shown, the abutment member 250 further includes a first positioning part 2509 and a second positioning part 2511. The first positioning part 2509 is disposed on the side of the first extension arm 2505 opposite to the first arc rail 2501, and the second positioning part 2511 is disposed on the side of the second extension arm 2506 opposite to the second arc rail 2502. The first positioning part 2509 and the second positioning part 2511 are used to position the first elastic member 255 respectively. In this embodiment, the first positioning part 2509 is a first protrusion protruding from the side of the first connecting plate 2505b opposite to the side of the first arc rail 2501, and the second positioning part 2511 is a second protrusion protruding from the side of the second connecting plate 2506b opposite to the side of the second arc rail 2502. Preferably, both the first protrusion and the second protrusion are cylinders, and the axis of the cylinder extends along the X-axis direction.

[0063] Please refer to the following: Figures 8-11 and Figures 15-16The first rotating member 241 includes a first connecting portion 2411 connected to the first connecting member 243, a first rotating portion 2413 rotatably connected to the base 23, and a first supporting portion 2414 connected between the first connecting portion 2411 and the first rotating portion 2413. The first connecting portion 2411 and the first connecting member 243 can be fixedly connected by means of, but not limited to, snap-fitting, screwing, or gluing. In some embodiments, the first rotating member 241 and the first connecting member 243 can also be integrally formed. The first rotating part 2413 has first arc grooves 2410 on its opposite sides. In this embodiment, the first rotating part 2413 is a first semicircular body. The end of the first support part 2414 away from the first connecting part 2411 is connected to the outer peripheral surface of the first semicircular body. The two first arc grooves 2410 are respectively provided on the opposite end faces of the first semicircular body, and the opposite ends of the first arc grooves 2410 pass through the side faces of the first semicircular body. Preferably, the axis of the first semicircular body is collinear with the axis of the first arc grooves 2410. The first rotating member 241 includes a first limiting part 2416 and a second limiting part 2417 spaced apart, and a first damping part 2418 located between the first limiting part 2416 and the second limiting part 2417. The first limiting part 2416 is closer to the first connecting part 2411 than the second limiting part 2417. In this embodiment, the first limiting part 2416, the second limiting part 2417, and the first damping part 2418 are disposed on the end face of the first rotating part 2413 facing the abutment member 250, and the first limiting part 2416, the first damping part 2418, and the second limiting part 2417 are arranged around the first arc groove 2410. The end of the first connecting member 243 is provided with a third arc groove 2432, and the axis of the third arc groove 2432 is parallel to the axis of the first arc groove 2410. In this embodiment, the first connecting member 243 is a rectangular block, the first connecting part 2411 is connected to the middle of the rectangular block, the third arc groove 2432 is disposed at the end of the rectangular block, and the opposite ends of the third arc groove 2432 pass through the front side of the first connecting member 243 and the side side away from the first rotating part 2413, respectively. The first connector 243 is provided with a first connecting hole 2434 and a first snap-fit ​​post 2435. Specifically, the first connecting hole 2434 is provided on the front side of the first connector 243 and passes through the first connector 243 along the Z-axis direction, and the first snap-fit ​​post 2435 is provided on the back side of the first connector 243 and extends along the Z-axis direction.

[0064] The second rotating member 246 includes a second connecting portion 2461 connected to the second connecting member 248, a second rotating portion 2463 rotatably connected to the base 23, and a second supporting portion 2464 connected between the second connecting portion 2461 and the second rotating portion 2463. The second connecting portion 2461 and the second connecting member 248 can be fixedly connected by means of, but not limited to, snap-fit, screw-fit, or adhesive bonding. In some embodiments, the second rotating member 246 and the second connecting member 248 can also be integrally formed. The second rotating portion 2463 has a second arc groove 2460 on each of its opposite sides. In this embodiment, the second rotating portion 2463 is a second semicircle. The end of the second supporting portion 2464 away from the second connecting portion 2461 is connected to the outer peripheral surface of the second semicircle. The two second arc grooves 2460 are respectively provided on the opposite end faces of the second semicircle. The opposite ends of the second arc grooves 2460 pass through the side faces of the second semicircle. The axis of the second semicircle is collinear with the axis of the second arc groove 2460. The second rotating member 246 includes a spaced-apart third limiting portion 2466 and a fourth limiting portion 2467, and a second damping portion 2468 located between the third limiting portion 2466 and the fourth limiting portion 2467. The third limiting portion 2466 is closer to the second connecting portion 2461 than the fourth limiting portion 2467. In this embodiment, the third limiting portion 2466, the fourth limiting portion 2467, and the second damping portion 2468 are disposed on the end face of the second rotating portion 2463 facing the abutment member 250, and the third limiting portion 2466, the second damping portion 2468, and the fourth limiting portion 2467 are arranged around the second arc groove 2460. The end of the second connecting member 248 is provided with a fourth arc groove 2482, and the axis of the fourth arc groove 2482 is parallel to the axis of the second arc groove 2460. In this embodiment, the second connector 248 is a rectangular block, the second connecting portion 2461 is connected to the rectangular block, and the fourth arc groove 2482 is provided at the end of the rectangular block. The fourth arc groove 2482 passes through the front side of the second connector 248 and the side facing away from the second rotating portion 2463, respectively, at its opposite ends. The second connector 248 is provided with a second connecting hole 2484 and a second locking post 2485. Specifically, the second connecting hole 2484 is provided on the front side of the second connector 248 and passes through the second connector 248 along the Z-axis direction, and the second locking post 2485 is provided on the back side of the second connector 248 and extends along the Z-axis direction. Figures 4-11 and Figure 17As shown, the first side support 273 and the first rotating mechanism 240 are rotatably connected by a third arc groove and a third arc rail. The third arc groove is provided in one of the first side support 273 and the first rotating mechanism 240, and the third arc rail is provided in the other of the first side support 273 and the first rotating mechanism 240. The axis of the third arc rail is parallel to the first rotation axis L1. In this embodiment, the end of the first connecting member 243 is provided with a third arc groove 2432, and the side of the first side support 273 away from the base 23 is provided with a third arc rail 2731. The third arc rail 2731 is rotatably accommodated in the third arc groove 2432. The second side support 275 and the second rotating mechanism 245 are rotatably connected by a fourth arcuate groove and a fourth arcuate rail. The fourth arcuate groove is provided in one of the second side support 275 and the second rotating mechanism 245, and the fourth arcuate rail is provided in the other of the second side support 275 and the second rotating mechanism 245. The axis of the fourth arcuate rail is parallel to the first rotation axis L1. In this embodiment, the end of the second connecting member 248 is provided with a fourth arcuate groove 2482, and the side of the second side support 275 away from the base 23 is provided with a fourth arcuate rail 2751, which is rotatably accommodated in the fourth arcuate groove 2482.

[0065] In other embodiments, the end of the first connector 243 is provided with a third arc track, and the side of the first side support 273 away from the base 23 is provided with a third arc groove, the third arc track being rotatably accommodated in the third arc groove; the end of the second connector 248 is provided with a fourth arc track, and the side of the second side support 275 away from the base 23 is provided with a fourth arc groove, the fourth arc track being rotatably accommodated in the fourth arc groove.

[0066] The first side support 273 and the base 23 are connected by a first adjusting groove and a first adjusting shaft. The first adjusting shaft is parallel to the X-axis direction, that is, parallel to the first rotation axis L1. The first adjusting groove is provided on one of the first side support 273 and the base 23, and the first adjusting shaft is provided on the other of the first side support 273 and the base 23. In this embodiment, the first side support 273 is provided with a first adjusting arm 2733 on the side near the base 23. The first adjusting arm 2733 is provided with a first adjusting groove 2734. The first adjusting shaft 2362 of the base 23 is rotatably and slidably accommodated in the first adjusting groove 2734. The second side support 275 and the base 23 are connected by a second adjusting groove and a second adjusting shaft. The second adjusting shaft is parallel to the X-axis direction, that is, parallel to the second rotation axis L2. The second adjusting groove is provided on one of the second side support 275 and the base 23, and the second adjusting shaft is provided on the other. In this embodiment, the second side support 275 has a second adjusting arm 2753 on the side near the base 23, and the second adjusting arm 2753 has a second adjusting groove 2754. The second adjusting shaft 2372 of the base 23 is rotatably and slidably accommodated in the second adjusting groove 2754. When the first side support 273 and the second side support 275 are folded or unfolded relative to the base 23, the first adjusting shaft 2362 slides and rotates in the first adjusting groove 2734, and the second adjusting shaft 2372 slides and rotates in the second adjusting groove 2754.

[0067] The first side support member 273 further includes a first side support plate 2730, a first adjusting arm 2733 disposed on the back side of the first side support plate 2730 near the base 23, and a first adjusting groove 2734 disposed on one side of the first adjusting arm 2733. Specifically, the first adjusting arm 2733 is a strip-shaped block extending along the Y-axis, and the first adjusting groove 2734 extends from one end near the first adjusting arm 2733 along the first adjusting arm 2733 to the opposite end. The first adjusting groove 2734 includes a first positioning segment 2734a and a second positioning segment 2734b located at opposite ends, with the first positioning segment 2734a being farther from the base 23 than the second positioning segment 2734b. The second side support member 275 includes a second side support plate 2750, a second adjusting arm 2753 disposed on the back side of the second side support plate 2750 near the base 23, and a second adjusting groove 2754 disposed on one side of the second adjusting arm 2753. Specifically, the second adjusting arm 2753 is a strip-shaped block extending along the Y-axis, and the second adjusting groove 2754 extends from one end near the second adjusting arm 2753 to the opposite end. The second adjusting groove 2754 includes a third positioning segment 2754a and a fourth positioning segment 2754b located at its opposite ends, with the third positioning segment 2754a being farther away from the base 23 than the fourth positioning segment 2754b. When the first side support 273 and the second side support 275 are fully flattened, the first adjustment shaft 2362 is positioned at the first positioning section 2734a, and the second adjustment shaft 2372 is positioned at the third positioning section 2754a. The front surfaces of the first side support 273 and the second side support 275 are coplanar, and the adjacent sides of the first side support plate 2730 and the second side support plate 2750 are in contact, allowing the first side support 273 and the second side support 275 to stably support the flexible screen and prevent it from collapsing and being damaged. When the first side support 273 and the second side support 275 are fully folded, the first adjustment shaft 2362 is positioned at the second positioning section 2734b, and the second adjustment shaft 2372 is positioned at the fourth positioning section 2754b, so that the front surfaces of the first side support 273 and the second side support 275 form a teardrop-shaped storage space to facilitate the storage of the flexible screen's bendable area.

[0068] Furthermore, the end face of the first adjusting arm 2733 away from the third arc rail 2731 is set as an arc surface, and the end face of the second adjusting arm 2753 away from the fourth arc rail 2751 is an arc surface, so as to facilitate the folding or flattening of the first side support 273 and the second side support 275.

[0069] Preferably, one end of the first adjusting groove 2734 passes through the end of the first adjusting arm 2733 near the base 23 to form a first opening 2734c. The axis of the first adjusting shaft 2362 is parallel to the first rotation axis L1 between the first rotating member 241 and the base 23. The first adjusting shaft 2362 can be inserted into the first adjusting groove 2734 from the first opening 2734c. During the rotation of the first rotating member 241 relative to the base 23, the first adjusting shaft 2362 slides and rotates in the first adjusting groove 2734. One end of the adjustment groove 2754 passes through the end of the second adjustment arm 2753 near the base 23 to form a second opening 2754c. The axis of the second adjustment shaft 2372 on the base 23 is parallel to the second rotation axis L2 between the second rotating member 246 and the base 23. The second adjustment shaft 2372 can be inserted into the second adjustment groove 2754 from the second opening 2754c. During the rotation of the second rotating member 246 relative to the base 23, the second adjustment shaft 2372 slides and rotates in the second adjustment groove 2754. One end of the first adjustment groove 2734 on the first adjustment arm 2733 passes through one end of the first adjustment arm 2733 to facilitate the installation of the first side support member 273 to the base 23. One end of the second adjustment groove 2754 on the second adjustment arm 2753 passes through one end of the second adjustment arm 2753 to facilitate the installation of the second side support member 275 to the base 23. Specifically, when installing the first side support 273 to the base 23, the first adjusting shaft 2362 is directly inserted into the first adjusting groove 2734 through the first opening 2734c; when installing the second side support 275 to the base 23, the second adjusting shaft 2372 is directly inserted into the second adjusting groove 2754 through the second opening 2754c; this makes the installation of the first side support 273 and the second side support 275 convenient, improves installation efficiency, and reduces assembly costs.

[0070] Please refer to the following: Figures 4-11 and Figures 18-19The rotating shaft assembly 22 also includes a synchronization mechanism 28, which includes a linkage member 280, a first synchronization member 283, and a second synchronization member 285. The linkage member 280 is connected to the base 23 and can slide relative to the base 23 along a first direction (i.e., the X-axis direction). The linkage member 280 includes a first connecting portion 2801 and a second connecting portion 2802. The first synchronization member 283 is located on one side of the base 23, and the second synchronization member 285 is located on the opposite side of the base 23. That is, the first synchronization member 283 and the second synchronization member 285 are respectively located on opposite sides of the base 23. The first synchronization member 283 and the first connecting portion 2801 are rotatably connected through a first helical groove and a first transmission part, and the second synchronization member 285 and the second connecting portion 2802 are rotatably connected through a second helical groove and a second transmission part. The first helical groove and the second helical groove have opposite rotation directions. The first transmission part moves along the first spiral groove, causing the linkage 280 to slide relative to the base 23 in the X-axis direction. At the same time, the sliding of the base 23 causes the second transmission part to move along the second spiral groove, thereby causing the second synchronization part 285 to rotate synchronously relative to the second connecting part 2802. When the second synchronization part 285 rotates relative to the second connecting part 2802, the second transmission part 2851 moves along the second spiral groove, causing the linkage 280 to slide relative to the base 23. At the same time, the sliding of the base 23 causes the first transmission part 2831 to move along the first spiral groove, causing the first synchronization part 283 to rotate synchronously relative to the first connecting part 2801. This achieves the synchronous folding or flattening of the first synchronization part 283 and the second synchronization part 285, thereby driving the first side support 273 and the second side support 275 to fold or flatten synchronously. Simultaneously, it drives the two frames 21 to fold or flatten synchronously, causing the bendable area 31 of the flexible screen 30 to bend or flatten.

[0071] The first connecting portion 2801 and the second connecting portion 2802 are offset from each other along a first direction (i.e., the X-axis direction), and / or the first connecting portion 2801 and the second connecting portion 2802 are offset from each other along a second direction (i.e., the Y-axis direction), wherein the first direction is perpendicular to the second direction. In this embodiment, the first connecting portion 2801 and the second connecting portion 2802 are respectively located on both sides of the center line O of the linkage member 280. The first connecting portion 2801 and the second connecting portion 2802 on the linkage member 280 are offset in the first direction (i.e., in the X-axis direction), and the first connecting portion 2801 and the second connecting portion 2802 are offset in the second direction (i.e., in the Y-axis direction). The third rotation axis L3 between the first synchronizing member 283 and the first connecting portion 2801 is parallel to the first direction (i.e., the X-axis direction), and the fourth rotation axis L4 between the second synchronizing member 285 and the second connecting portion 2802 is parallel to the first direction (i.e., the X-axis direction). Furthermore, the third rotation axis L3 and the fourth rotation axis L4 are parallel to or coincide with each other. In this embodiment, the third rotation axis L3 between the first synchronizing member 283 and the linkage member 280 and the fourth rotation axis L4 between the second synchronizing member 285 and the linkage member 280 are parallel to each other, and the third rotation axis L3 is parallel to the first rotation axis L1. Since the first connecting part 2801 and the second connecting part 2802 are misaligned in both the X-axis and Y-axis directions, the positions of the first connecting part 2801 and the second connecting part 2802 can be made compact. This makes the first synchronizing member 283 and the second synchronizing member 285, which are respectively connected to the first connecting part 2801 and the second connecting part 2802, misaligned and compact. This reduces the space occupied by the synchronizing mechanism 28 in the rotating shaft assembly 22, allowing the rotating shaft assembly 22 to have a large amount of space to accommodate other components.

[0072] In other embodiments, the first connecting portion 2801 and the second connecting portion 2802 on the linkage 280 can be misaligned only in the X-axis direction, the first co-positioning member 283 and the second co-positioning member 285 are rotatably connected to the first connecting portion 2801 and the second connecting portion 2802 respectively, and the third rotation axis L3 and the fourth rotation axis L4 are collinear.

[0073] In other embodiments, the first connecting portion 2801 and the second connecting portion 2802 on the linkage 280 may be misaligned only in the Y-axis direction, and the first synchronizing member 283 and the second synchronizing member 285 are rotatably connected to the first connecting portion 2801 and the second connecting portion 2802, respectively. Preferably, the first connecting portion 2801 and the second connecting portion 2802 are symmetrically arranged about the center line O, and the third rotation axis L3 and the fourth rotation axis L4 are parallel to each other at intervals, such that the first synchronizing member 283 and the second synchronizing member 285, which are respectively connected to the first connecting portion 2801 and the second connecting portion 2802, are symmetrically arranged about the center line O.

[0074] like Figures 18-19As shown, the first spiral groove is provided in one of the first connecting portion 2801 and the first synchronizing member 283, and the first transmission part is provided in the other of the first connecting portion 2801 and the first synchronizing member 283; the second spiral groove is provided in one of the second connecting portion 2802 and the second synchronizing member 285, and the second transmission part is provided in the other of the second connecting portion 2802 and the second synchronizing member 285. In this embodiment, the first connecting portion 2801 is provided with a first spiral groove 2804, the axis of the first spiral groove 2804 is collinear with the third rotation axis L3, the first synchronizing member 283 includes a first transmission part 2831, the first transmission part 2831 is rotatably accommodated in the first spiral groove 2804; the second connecting portion 2802 is provided with a second spiral groove 2805, the axis of the second spiral groove 2805 is collinear with the fourth rotation axis L4, the second synchronizing member 285 includes a second transmission part 2851, the second transmission part 2851 is rotatably accommodated in the second spiral groove 2805. When the first synchronizing member 283 rotates relative to the base 23, the first transmission part 2831 rotates along the first spiral groove 2804 to push the linkage member 280 to slide relative to the base 23 in the first direction (i.e., the X-axis direction). At the same time, the sliding of the linkage member 280 pushes the second transmission part 2851 to rotate along the second spiral groove 2805, thereby causing the second synchronizing member 285 to rotate relative to the base 23, thus achieving synchronous rotation of the first synchronizing member 283 and the second synchronizing member 285. When the second synchronizing member 285 rotates relative to the base 23, the second transmission part 2851 rotates along the second spiral groove 2805 to push the linkage member 280 to slide relative to the base 23 in the first direction (i.e., the X-axis direction). At the same time, the sliding of the linkage member 280 pushes the first transmission part 2831 to rotate along the first spiral groove 2804, thereby causing the first synchronizing member 281 to rotate relative to the base 23, thus achieving synchronous rotation of the first synchronizing member 283 and the second synchronizing member 285.

[0075] In other embodiments, the first synchronizing member 283 is provided with a first spiral groove, and the first connecting part 2801 is provided with a first transmission part, which is rotatably accommodated in the first spiral groove; the second synchronizing member 285 is provided with a second spiral groove, and the second connecting part 2802 is provided with a second transmission part, which is rotatably accommodated in the second spiral groove.

[0076] The first connecting part 2801 has two first spiral surfaces 2804a on opposite sides of the first spiral groove 2804 along the first direction (i.e., the X-axis direction). The first transmission part 2831 includes two opposite first abutting surfaces 2831a, which are respectively in contact with the two first spiral surfaces 2804a. The second connecting part 2802 has two second spiral surfaces 2805a on opposite sides of the second spiral groove 2805 along the first direction (i.e., the X-axis direction). The second transmission part 2851 includes two opposite second abutting surfaces 2851a, which are in contact with the two second spiral surfaces 2805a. The first spiral surfaces 2804a and the second spiral surfaces 2805a have opposite directions of rotation. The first helical groove 2804 and the second helical groove 2805 are offset from each other along a first direction (i.e., the X-axis direction), and / or the first helical groove 2804 and the second helical groove 2805 are offset from each other along a second direction (i.e., the Y-axis direction), wherein the first direction is perpendicular to the second direction. In this embodiment, the first helical groove 2804 and the second helical groove 2805 are respectively located on both sides of the center line O of the linkage 280. The first helical groove 2804 and the second helical groove 2805 on the linkage 280 are offset in the first direction (i.e., in the X-axis direction), and the first helical groove 2804 and the second helical groove 2805 are offset in the second direction (i.e., in the Y-axis direction).

[0077] The length of the first helical surface 2804a of the first helical groove 2804 and the second helical surface 2805a of the second helical groove 2805 extending helixedly in the direction parallel to the sliding direction of the linkage 280 is proportional to the length of the sliding of the linkage 280 relative to the base 23. That is, the longer the length of the first helical surface 2804a and the second helical surface 2805a extending helixedly in the direction parallel to the center line O, the longer the sliding length of the linkage 280 relative to the base 23; the shorter the length of the first helical surface 2804a and the second helical surface 2805a extending helixedly in the direction parallel to the center line O, the shorter the sliding length of the linkage 280 relative to the base 23. Specifically, the first helical surface 2804a and the second helical surface 2805a have opposite directions of rotation. The angle between the first helical surface 2804a and the third rotation axis L3 is equal to the angle between the second helical surface 2805a and the fourth rotation axis L4. The length of the first helical surface 2804a extending in the direction of the third rotation axis L3 (i.e., the X-axis direction) is equal to the length of the second helical surface 2805a extending in the direction of the fourth rotation axis L4 (i.e., the X-axis direction). The longer the length of the first helical surface 2804a and the second helical surface 2805a extending in the direction parallel to the center line O (i.e., the X-axis direction), the longer the sliding length of the linkage 280 relative to the base 23. The shorter the length of the first helical surface 2804a and the second helical surface 2805a extending in the direction parallel to the center line O (i.e., the X-axis direction), the shorter the sliding length of the linkage 280 relative to the base 23.

[0078] like Figure 18 and Figure 19 As shown, the first connecting part 2801 includes a first spiral rail 2803 disposed in a first spiral groove 2804, the axis of the first spiral rail 2803 being parallel to a first direction (i.e., the X-axis direction), and a first transmission part 2831 having a first transmission groove 2831b corresponding to the first spiral rail 2803, the first spiral rail 2803 being rotatably accommodated in the first transmission groove 2831b; the second connecting part 2802 includes a second spiral rail 2806, the axis of the second spiral rail 2806 being parallel to the first direction (i.e., the X-axis direction), and a second transmission part 2851 having a second transmission groove 2851b corresponding to the second spiral rail 2806, the second spiral rail 2806 being slidably accommodated in the second transmission groove 2851b. When the first spiral rail 2803 rotates in the first transmission groove 2831b, the first connecting part 2801 slides against the side of the first spiral rail 2803, causing the linkage 280 to slide relative to the base 23 in the first direction (i.e., the X-axis direction). Simultaneously, the sliding of the linkage 280 causes the side of the second spiral rail 2806 to slide against the second transmission part 2851, rotating in the second spiral groove 2805. This, in turn, causes the second synchronizing member 285 to rotate relative to the base 23, thus realizing the rotation of the first synchronizing member 283 and the second synchronizing member 285. Synchronous rotation; when the second spiral rail 2806 slides in the second transmission groove 2851b, the second spiral rail 2806 slides against the inner side of the second transmission groove 2851b so that the linkage 280 slides relative to the base 23 in the first direction (i.e., the X-axis direction). At the same time, the sliding of the linkage 280 causes the side of the first spiral rail 2803 to slide against the first transmission groove 2831b, thereby causing the second synchronizing member 285 to rotate relative to the base 23, realizing the synchronous rotation of the first synchronizing member 283 and the second synchronizing member 285. In this embodiment, the first connecting part 2801 is provided with a first spiral rail 2803 on the first spiral surface 2804a of the first spiral groove 2804, and the first transmission part 2831 is provided with a first transmission groove 2831b corresponding to the first spiral rail 2803; the second connecting part 2802 is provided with a second spiral rail 2806 on the second spiral surface 2805a of the second spiral groove 2805, and the second transmission part 2851 is provided with a second transmission groove 2851b corresponding to the second spiral rail 2806. The first spiral rail 2803 and the first spiral groove 2804 have the same rotation direction, and the second spiral rail 2806 and the second spiral groove 2805 have the same rotation direction.

[0079] In other embodiments, the first helical groove 2804 on the first connecting portion 2801 and the second helical groove 2805 on the second connecting portion 2802 are misaligned only in a first direction (i.e., the X-axis direction), that is, the first helical groove 2804 and the second helical groove 2805 are misaligned in a direction parallel to the center line O. When the first transmission portion 2831 and the second transmission portion 2851 are respectively housed in the first helical groove 2804 and the second helical groove 2805, the first transmission portion 2831 and the second transmission portion 2851 are misaligned in a direction parallel to the center line O.

[0080] In other embodiments, the first helical groove 2804 of the first connecting portion 2801 and the second helical groove 2805 of the second connecting portion 2802 are misaligned only in the second direction (i.e., the Y-axis direction). Specifically, the first helical groove 2804 and the second helical groove 2805 are misaligned in a direction perpendicular to the center line O, meaning they are located on opposite sides of the center line O. When the first transmission portion 2831 and the second transmission portion 2851 are respectively housed in the first helical groove 2804 and the second helical groove 2805, the first transmission portion 2831 and the second transmission portion 2851 are misaligned in the Y-axis direction.

[0081] In some embodiments, the first connecting portion 2801 has a first transmission groove on its first helical surface 2804a, and the first transmission portion 2831 has a first helical rail corresponding to the first transmission groove. The first helical rail has the same rotation direction as the first helical groove 2804. The second connecting portion 2802 has a second transmission groove on its second helical surface 2805a, and the second transmission portion 2851 has a second helical rail corresponding to the second transmission groove. The second helical rail has the same rotation direction as the second helical groove 2805. The first helical rail and the second helical rail have opposite rotation directions.

[0082] like Figures 8-11 and Figures 18-19As shown, the linkage 280 and the base 23 are slidably connected by a second guide groove and a second guide rail. The second guide groove is provided on one of the base 23 and the linkage 280 and extends along a first direction, while the second guide rail is provided on the other of the linkage 280 and the base 23. In this embodiment, the base 23 is provided with a second guide groove 2306, and the linkage 280 is provided with a second spiral rail 2806 corresponding to the second guide groove 2306. Specifically, the linkage 280 includes a sliding plate 2811, and the sliding plate 2811 is provided with second spiral rails 2806 on its opposite sides and back, respectively. The second spiral rails 2806 extend along a first direction (i.e., the X-axis direction). A first connecting part 2801 and a second connecting part 2802 are respectively provided on the sliding plate 2811. In this embodiment, the sliding plate 2811 is generally rectangular. The length of the sliding plate 2811 extends along the X-axis, the width of the sliding plate 2811 extends along the Y-axis, and the thickness of the sliding plate 2811 extends along the Z-axis. The first connecting part 2801 and the second connecting part 2802 are respectively located at two opposite corners of the sliding plate 2811. Specifically, a first spiral groove 2804 and a second spiral groove 2805 are respectively provided at two opposite corners of the front side of the sliding plate 2811. The first transmission part 2831 is accommodated in the first spiral groove 2804, and the first spiral rail 2803 is accommodated in the first transmission groove 2831b. The second transmission part 2851 is accommodated in the second spiral groove 2805, and the second spiral rail 2806 is accommodated in the second transmission groove 2851b. When the first transmission part 2831 rotates in the first spiral groove 2804 or the second transmission part 2851 rotates in the second spiral groove 2805, the second spiral rail 2806 of the linkage 280 slides in the corresponding second guide groove 2306, causing the linkage 280 to move along the X-axis direction.

[0083] The first synchronizing element 283 includes a first pushing block 2832, a second pushing block 2836, and a second elastic element 2837 sandwiched between the first pushing block 2832 and the second pushing block 2836. The first transmission part 2831 includes a first transmission block 2833 disposed on the first pushing block 2832 and a second transmission block 2834 disposed on the second pushing block 2836. Two first abutting surfaces 2831a are respectively disposed on opposite sides of the first transmission block 2833 and the second transmission block 2834. The second elastic element 2837 pushes against the first pushing block 2832 and the second pushing block 2836 respectively, so that the two first abutting surfaces 2831a respectively abut against the two first spiral surfaces 2804a. The second synchronizing element 285 includes a third pushing block 2852, a fourth pushing block 2856, and a third elastic element 2857 clamped between the third pushing block 2852 and the fourth pushing block 2856. The second transmission part 2851 includes a third transmission block 2853 disposed on the third pushing block 2852 and a fourth transmission block 2854 disposed on the fourth pushing block 2856. Two second abutting surfaces 2851a are respectively disposed on opposite sides of the third transmission block 2853 and the fourth transmission block 2854. The third elastic element 2857 pushes against the third pushing block 2852 and the fourth pushing block 2856 respectively, so that the two second abutting surfaces 2851a abut against the two second spiral surfaces 2805a respectively. The first pushing block 2832 and the first transmission block 2833 are connected as one unit through the first connecting block, and the second pushing block 2836 and the second transmission block 2834 are connected as one unit through the second connecting block. The first pushing block 2832 and the second pushing block 2836 are slidably connected in the X-axis direction, and the first transmission block 2833 and the second transmission block 2834 are slidably connected in the X-axis direction. Therefore, the first pushing block 2832 and the second pushing block 2836 can move away from each other or move closer to each other in the X-axis direction, and the first transmission block 2833 and the second transmission block 2834 can move away from each other or move closer to each other in the X-axis direction. The second elastic member 2837 elastically pushes against the first pushing block 2832 and the second pushing block 2836 at opposite ends, causing the first pushing block 2832 and the second pushing block 2836 to move away from each other, thereby causing the first transmission block 2833 and the second transmission block 2834 to move away from each other, so that the two first abutting surfaces 2831a can abut against the two first spiral surfaces 2804a respectively; the third elastic member 2857 elastically pushes against the third pushing block 2852 and the fourth pushing block 2856 at opposite ends, causing the third pushing block 2852 and the fourth pushing block 2856 to move away from each other, thereby causing the third transmission block 2853 and the fourth transmission block 2854 to move away from each other, so that the two second abutting surfaces 2851a can abut against the two second spiral surfaces 2805a respectively.Preferably, the first push block 2832 is provided with a first receiving opening, the second push block 2836 is provided with a second receiving opening corresponding to the first receiving opening, the second elastic member 2837 is accommodated in the first receiving opening and the second receiving opening, and the two ends of the second elastic member 2837 respectively abut against the first push block 2832 and the second push block 2836; the third push block 2852 is provided with a third receiving opening, the fourth push block 2856 is provided with a fourth receiving opening corresponding to the third receiving opening, the third elastic member 2857 is accommodated in the third receiving opening and the fourth receiving opening, and the two ends of the third elastic member 2857 respectively abut against the third push block 2852 and the fourth push block 2856. Furthermore, the first push block 2832 has a first fixing post 2838 protruding into the first receiving port, the second push block 2836 has a second fixing post (not shown) protruding into the second receiving port, and the third elastic member 2857 is positioned at opposite ends of the first fixing post 2838 and the second fixing post, respectively; the third push block 2852 has a third fixing post 2858 protruding into the third receiving port, the fourth push block 2856 has a fourth fixing post (not shown) protruding into the fourth receiving port, and the fourth elastic member 2857 is positioned at opposite ends of the third fixing post 2858 and the fourth fixing post, respectively.

[0084] The end of the first synchronizing member 283 away from the base 23 is rotatably connected to the first side support member 273 through the cooperation of an arc track and an arc groove. The axis of the arc groove is parallel to the first rotation axis L1. The arc track is provided on one of the first side support member 273 and the first synchronizing member 283, and the arc groove is provided on the other of the first side support member 273 and the first synchronizing member 283. In this embodiment, the end face of the second pushing block 2836 away from the first pushing block 2832 is provided with a fifth arc groove 2836a, and the first side support member 273 is provided with a third arc track 2731. The third arc track 2731 is rotatably accommodated in the fifth arc groove 2836a. The end of the second synchronizing member 285 away from the base 23 is rotatably connected to the second side support member 275 via a circular arc rail and a circular arc groove. The axis of the circular arc groove is parallel to the first rotation axis L1. The circular arc rail is provided in one of the second side support member 275 and the second synchronizing member 285, and the circular arc groove is provided in the other of the second side support member 275 and the second synchronizing member 285. In this embodiment, the end face of the fourth pushing block 2856 facing away from the third pushing block 2852 is provided with a sixth circular arc groove 2856a, and the second side support member 275 is provided with a fourth circular arc rail 2751, which is rotatably accommodated in the sixth circular arc groove 2756a.

[0085] Please refer to the following: Figures 4-12 and Figures 20-23When assembling the pivot assembly 22, two damping mechanisms 25 are installed onto two bases 23. Since the two damping mechanisms 25 are installed onto the two bases 23 in the same way, only the process of installing one damping mechanism 25 onto the base 23 is described. Specifically, the abutment 250 is placed in the first receiving groove 2304 of one of the bases 23, so that the first guide rail 2504 of the abutment 250 is slidably accommodated in the corresponding first guide groove 2302, with the first arc rail 2501 facing the first arc strip 2310 and the second arc rail 2502 facing the second arc strip 2320. The first positioning part 2509 and the second positioning part 2511 are respectively facing the first positioning post 2342 and the second positioning post 2320. Positioning post 2352; one of the first elastic members 255 is positioned at opposite ends on the first positioning part 2509 and the first positioning post 2342 respectively, and the other first elastic member 255 is positioned at opposite ends on the second positioning part 2511 and the second positioning post 2352 respectively; a first rotating mechanism 240 and a second rotating mechanism 245 are respectively assembled to each base 23. Specifically, the end of the first rotating member 241 away from the first connecting member 243 is placed between the first connecting part 231 and the first extension arm 2505, so that the first arc strip 2310 and the first arc rail 2501 are rotatably accommodated in the two first arc grooves 2410 of the first rotating member 241. The end of the second rotating member 246 away from the second connecting member 248 is placed between the second connecting portion 232 and the second extending arm 2506, so that the second arc strip 2320 and the second arc rail 2502 are rotatably accommodated in the two second arc grooves 2460 of the second rotating member 246. At this time, the two first elastic members 255 on each base 23 are elastically compressed between the abutting member 250 and the base 23, and the two first elastic members 255 elastically abut against the first extending arm 2505 and the second extending arm 2506, so that the first arc rail 2501 and the second arc rail 2502 are stably accommodated in the corresponding first arc groove 2410 and second arc groove 2460, to prevent The first rotating member 241 and the second rotating member 246 are prevented from disengaging from the base 23, and the first abutting top 2507 and the second abutting top 2508 of the abutting member 250 abut against the first limiting part 2416 of the first rotating member 241 and the third limiting part 2466 of the second rotating member 246 respectively; the synchronization mechanism 28 is installed on one of the bases 23. Specifically, the first transmission part 2831 of the first synchronization member 283 is rotatably housed in the first spiral groove 2804 of the linkage member 280, so that the two first abutting surfaces 2831a of the first transmission part 2831 respectively fit against the two first spiral surfaces 2804a, and the first spiral rail 2803 is housed in the corresponding first transmission groove 2831b;The second transmission part 2851 of the second synchronizing member 285 is rotatably housed in the second spiral groove 2805 of the linkage member 280, such that the two second abutting surfaces 2851a of the second transmission part 2851 respectively abut against the two second spiral surfaces 2805a, and the second spiral rail 2806 is housed in the corresponding second transmission groove 2851b. The third elastic member 2837 is placed between the first pushing block 2832 and the second pushing block 2836, that is, the opposite ends of the third elastic member 2837 are respectively positioned on the first fixed post 2838 and the second pushing block 2836. The second fixed post, the third elastic element 2837 elastically pushes against the first pushing block 2832 and the second pushing block 2836 so that the two first abutting surfaces 2831a respectively abut against the two first spiral surfaces 2804a. The fourth elastic element 2857 is placed between the third pushing block 2852 and the fourth pushing block 2856, that is, the opposite ends of the fourth elastic element 2857 are respectively positioned on the fourth fixed post of the third fixed post 2858 and the fourth pushing block 2856. The fourth elastic element 2857 elastically pushes against the third pushing block 2852 and the fourth pushing block 2856 so that the two first abutting surfaces 2831a respectively abut against the two first spiral surfaces 2804a. The abutting surface 2851a abuts against the two second spiral surfaces 2805a respectively; then the linkage 280 is housed in the second receiving groove 2305 of the base 23, so that the second spiral rails 2806 are slidably housed in the second guide grooves 2306 of the base 23 respectively; the two bases 23 are arranged along the X-axis direction, and the first side support 273 and the second side support 275 are respectively placed on the opposite sides of the front of the base 23, and multiple first adjustment shafts 2362 on one side of the base 23 are slidably and rotatably inserted into the first adjustment groove from the corresponding first opening 2734c respectively. In section 2734, multiple second adjusting shafts 2372 on the opposite side of the base 23 are slidably and rotatably inserted into the second adjusting grooves 2754 from their corresponding second openings 2754c. Multiple third arcuate rails 2731 on the side of the first side support 273 away from the base 23 are rotatably inserted into their corresponding third arcuate grooves 2432 and fifth arcuate grooves 2836a. Multiple fourth arcuate rails 2751 on the side of the second side support 275 away from the base 23 are rotatably inserted into their corresponding fourth arcuate grooves 2482 and sixth arcuate grooves 2856a.

[0086] At this time, the first rotating member 241 and the second rotating member 246 are misaligned with each other along the first direction (i.e., the X-axis direction), and the first rotating member 241 and the second rotating member 246 are misaligned with each other along the second direction (i.e., the Y-axis direction); the first transmission part 2831 and the second transmission part 2851 are misaligned with each other along the first direction (i.e., the X-axis direction), and the first transmission part 2831 and the second transmission part 2851 are misaligned with each other along the second direction (i.e., the Y-axis direction); the four first elastic members 255 are misaligned with each other along the first direction (i.e., the X-axis direction), and the four first elastic members 255 are misaligned with each other along the second direction (i.e., the Y-axis direction), so that the components of the rotating shaft assembly 22 are tightly connected. The first elastic members 255 elastically push the abutment member 250 against the first rotating member 241 and the second rotating member 246, so that the first abutment member 2507 and the second abutment member 2508 respectively abut against the first limiting part 2416 of the first rotating member 241 and the third limiting part 2466 of the second rotating member 246. When the first side support 273 and the second side support 275 are fully flattened, the first adjusting shaft 2362 and the second adjusting shaft 2372 are respectively positioned at the first positioning section 2734a of the first side support 273 and the third positioning section 2754a of the second side support 275; the abutting member 250, under the pushing of the first elastic member 255, causes the first abutting top 2507 and the second abutting top 2508 to abut against the first limiting part 2416 of the first rotating member 241 and the third limiting part 2466 of the second rotating member 246, respectively, and the two first abutting surfaces 2831a of the first synchronizing member 283 respectively abut against the two first abutting surfaces 2831a of the first synchronizing member 283. The spiral surfaces 2804a abut against each other, creating frictional resistance. The two second abutting surfaces 2851a of the second synchronizing member 285 abut against the two second spiral surfaces 2805a, respectively, creating frictional resistance. This causes the first rotating member 241 and the second rotating member 246 to be positioned relative to the base 23, and the first synchronizing member 283 and the second synchronizing member 285 to be positioned relative to the base 23, thus restricting the sliding of the linkage member 280 relative to the base 23. This keeps the first side support member 273 and the second side support member 275 in a stable, fully flattened state, with the front surfaces of the first side support member 273 and the second side support member 275 being coplanar. Preferably, the first side support member 273 and the second side support member 275 are in contact with each other on their facing sides, meaning the gap between the first side support member 273 and the second side support member 275 is small.When the first side support 273 and the second side support 275 are fully folded, the first adjusting shaft 2362 and the second adjusting shaft 2372 are respectively positioned at the second positioning section 2734b of the first side support 273 and the fourth positioning section 2754b of the second side support 275; the abutting member 250, under the pushing of the first elastic member 255, causes the first abutting top 2507 and the second abutting top 2508 to abut against the second limiting part 2417 of the first rotating member 241 and the fourth limiting part 2467 of the second rotating member 246, respectively; and the two first abutting surfaces 2831a of the first synchronizing member 283 abut against the two first spiral surfaces 2804a respectively, resulting in frictional resistance. The two second abutting surfaces 2851a of component 285 abut against each other with the two second spiral surfaces 2805a respectively, resulting in frictional resistance. This causes the first rotating component 241 and the second rotating component 246 to be limited relative to the base 23, and the first synchronizing component 283 and the second synchronizing component 285 to be limited relative to the base 23, thereby restricting the sliding of the linkage component 280 relative to the base 23. This keeps the first side support component 273 and the second side support component 275 in a stable, fully folded state. The front of the first side support component 273 and the front of the second side support component 275 form a teardrop-shaped space, which facilitates the reception of the bendable area 31 of the flexible screen 30. When the abutment member 250 pushes against the first elastic member 255, causing the first abutment top 2507 to abut against the first damping part 2418 and the second abutment top 2508 to abut against the second damping part 2468, and the first side support member 273 and the second side support member 275 are in an intermediate state, the first abutment top 2507 and the second abutment top 2508 of the abutment member 250 abut against the first damping part 2418 and the second damping part 2468 respectively, so that the first side support member 273 and the second side support member 275 can be kept in any folded state other than the fully flattened state and the fully folded state, so that the electronic device 100 is in any hovering state.

[0087] It should be noted that: The fully flattened state means that the front faces of the first side support 273 and the second side support 275 are coplanar, i.e., the angle between the front faces of the first side support 273 and the second side support 275 is 180 degrees; the fully folded state means that the front faces of the first side support 273 and the second side support 275 are parallel to each other, i.e., the angle between the front faces of the first connecting part 2533 and the second connecting part 2553 is 0 degrees. The front of the first side support 273 and the front of the second side support 275 form a teardrop-shaped space; the intermediate state refers to the angle between the front of the first side support 273 and the front of the second side support 275 being greater than 0 degrees and less than 180 degrees, and the front of the first side support 273 and the front of the second side support 275 forming any folded state other than coplanarity and teardrop-shaped space, that is, the folded state of the electronic device 100 where the angle between the front of the two frames 21 is within the range of greater than 0 degrees and less than 180 degrees.

[0088] Please refer to the following: Figures 4-6 and Figures 20-27When the rotating shaft assembly 22 is bent from its flattened state, the first rotating member 241 of the first rotating mechanism 240 rotates around the first arc strip 2310 and the first arc rail 2501 relative to the base 23 toward the second rotating mechanism 245. The first abutting point 2507 of the abutting member 250 disengages from the limit of the first limiting part 2416 and slides against the first damping part 2418 until the first abutting point 2507 abuts against the second limiting part 2417. At the same time, the first transmission part 2831 of the first synchronizing member 283 rotates around the first spiral rail 2803 relative to the base 23 toward the second synchronizing member 285, so that the first synchronizing member 283 rotates around the third rotation axis L3 and cannot move in the direction of the third rotation axis L3. The first transmission part 2831 in the first spiral groove 2 In the rotation of 804, the two first abutting surfaces 2831a slide against the two first spiral surfaces 2804a respectively, causing the linkage 280 to slide in a direction parallel to the center line O; the second spiral rail 2806 of the linkage 280 slides in the corresponding second transmission groove 2851b, and the second spiral surface 2805a slides against the second abutting surface 2851a, causing the second transmission part 2851 to rotate in the second spiral groove 2805 of the linkage 280, so that the second synchronizing element 285 relative to the base 23, that is, the second synchronizing element 285 can only rotate around the fourth rotation axis L4 and cannot slide in the direction of the fourth rotation axis L4; therefore, the first synchronizing element 283 rotates relative to the base 23 and the second synchronizing element 285 rotates relative to the base 23 and moves closer to each other. Simultaneously, the first rotating member 241 rotates around the first arc track 2501, and the second rotating member 246 rotates around the second arc track 2502. The first connecting member 243 and the first side support member 273 rotate relative to each other through the cooperation of the third arc track 2731 and the third arc groove 2432. Furthermore, the first side support member 273 and the first synchronizing member 283 rotate relative to each other through the cooperation of the third arc track 2731 and the fifth arc groove 2836a. The second connecting member 248 and the second side support member 275... The fourth arc rail 2751 and the fourth arc groove 2482 rotate relative to each other, and the second side support 275 and the second synchronization member 285 rotate relative to each other through the cooperation of the fourth arc rail 2751 and the sixth arc groove 2856a, so that the first adjusting arm 2733 of the first side support 273 and the first adjusting shaft 2362 are rotatably and slidably connected, and the second adjusting arm 2753 of the second side support 275 and the second adjusting shaft 2372 are rotatably and slidably connected.That is, the first adjusting shaft 2362 rotates and slides from the first positioning section 2734a to the second positioning section 2734b in the first adjusting groove 2734, and the second adjusting shaft 2372 rotates and slides from the third positioning section 2754a to the fourth positioning section 2754b in the second adjusting groove 2754, so that the first side support member 273 and the second side support member 275 on opposite sides of the base 23 move closer to each other until the first adjusting shaft 2362 is limited to the second positioning section 2734b and the second adjusting shaft 2372 is limited to the fourth positioning section 2754b. The first abutment top 2507 and the second abutment top 2508 of the abutment member 250 are respectively limited to the second limiting part 2417 and the fourth limiting part 2467 to prevent the first rotating mechanism 240 and the second rotating mechanism 245 from rotating relative to the base 23. The front of the first side support member 273 and the front of the second side support member 275 form a teardrop-shaped cross section.

[0089] In other bending methods of the rotating shaft assembly 22, the second rotating member 246 of the second rotating mechanism 245 can rotate relative to the base 23 toward the first rotating mechanism 240 around the second arc strip 2320 and the second arc rail 2502. The second abutment 2508 of the abutment member 250 disengages from the limit of the third limiting part 2466 and slides against the second damping part 2468 until the second abutment 2508 abuts against the fourth limiting part 2467. At the same time, the second transmission part 2851 of the second synchronizing member 285 rotates relative to the base 23 toward the first synchronizing member 283 around the second spiral rail 2806, so that the second synchronizing member 285 rotates around the fourth rotation axis L4 and cannot move in the direction of the fourth rotation axis L4. The second transmission part 2851 rotates around the second spiral groove 2806. During rotation, the two second abutting surfaces 2851a slide against the two second spiral surfaces 2805a respectively, causing the linkage 280 to slide in a direction parallel to the center line O; the first spiral rail 2803 of the linkage 280 slides in the corresponding first transmission groove 2831b, and the first spiral surface 2804a slides against the first abutting surface 2831a, causing the first transmission part 2831 to rotate in the first spiral groove 2804 of the linkage 280, so that the first synchronizing element 283 relative to the base 23, that is, the first synchronizing element 283 can only rotate around the third rotation axis L3 and cannot slide in the direction of the third rotation axis L3; therefore, the first synchronizing element 283 rotates relative to the base 23 and the second synchronizing element 285 rotates relative to the base 23 and moves closer to each other. Simultaneously, the second rotating member 246 rotates around the second arc track 2502, and the first rotating member 241 rotates around the first arc track 2501. The second connecting member 248 and the second side support member 275 rotate relative to each other through the cooperation of the fourth arc track 2751 and the fourth arc groove 2482. Furthermore, the second side support member 275 and the second synchronizing member 285 rotate relative to each other through the cooperation of the fourth arc track 2751 and the sixth arc groove 2856a. The first connecting member 243 and the first side support member 273... The third arc rail 2731 and the third arc groove 2432 rotate relative to each other, and the first side support 273 and the first synchronization member 283 rotate relative to each other through the cooperation of the third arc rail 2731 and the fifth arc groove 2836a, so that the second adjusting arm 2753 of the second side support 275 and the second adjusting shaft 2372 are rotatably and slidably connected, and the first adjusting arm 2733 of the first side support 273 and the first adjusting shaft 2362 are rotatably and slidably connected.That is, the second adjusting shaft 2372 rotates and slides from the third positioning section 2754a to the fourth positioning section 2754b in the second adjusting groove 2754, and the first adjusting shaft 2362 rotates and slides from the first positioning section 2734a to the second positioning section 2734b in the first adjusting groove 2734, so that the first side support member 273 and the second side support member 275 on opposite sides of the base 23 move closer to each other until the first adjusting shaft 2362 is limited to the second positioning section 2734b and the second adjusting shaft 2372 is limited to the fourth positioning section 2754b. The first abutment top 2507 and the second abutment top 2508 of the abutment member 250 are respectively limited to the second limiting part 2417 and the fourth limiting part 2467 to prevent the first rotating mechanism 240 and the second rotating mechanism 245 from rotating relative to the base 23. The front of the first side support member 273 and the front of the second side support member 275 form a teardrop-shaped cross section.

[0090] In other bending methods, the first rotating member 241 of the first rotating mechanism 240 can be rotated relative to the base 23 towards the second rotating mechanism 245 around the first arc strip 2310 and the first arc rail 2501, and the second rotating member 246 of the second rotating mechanism 245 can be rotated relative to the base 23 towards the first rotating mechanism 240 around the second arc strip 2320 and the second arc rail 2502. The first transmission part 2831 of the first synchronizing member 283 and the second transmission part 2851 of the second synchronizing member 285 rotate in the first spiral groove 2804 and the second spiral groove 2805 respectively, and move closer to each other. The first adjusting shaft 2362 rotates and slides in the first adjusting groove 2734, and the second adjusting shaft 2372 rotates and slides in the second adjusting groove 2754, so that the first support member 273 and the second support member 275 move closer to each other until the first adjusting shaft 2362 rotates and slides in the first adjusting groove 2734. The joint shaft 2362 is limited to the second positioning section 2734b and the second adjusting shaft 2372 is limited to the fourth positioning section 2754b; at the same time, the first abutting surface 2831a of the first synchronizing member 283 and the second abutting surface 2851a of the second synchronizing member 285 synchronously abut against the first spiral surface 2804a and the second spiral surface 2805a respectively, so that the linkage member 280 slides relative to the base 23 along the direction of the center line O (i.e., the X-axis direction) until the first abutting top 2507 is positioned at the second limiting part 2417 and the second abutting top 2508 is positioned at the fourth limiting part 2467, so as to prevent the first rotating mechanism 240, the second rotating mechanism 245, the first synchronizing member 283 and the second synchronizing member 285 from rotating relative to the base 23 respectively, and the front of the first side support member 273 and the front of the second side support member 275 form a teardrop-shaped cross section.

[0091] During the bending process of the first side support 273 and the second side support 275 relative to the base 23, the third arc track 2731 on the first side support 273 rotates in the third arc groove 2432 of the first connector 243 and the fifth arc groove 2836a of the first synchronizing member 283, respectively. At the same time, the fourth arc track 2751 of the second side support 275 rotates in the fourth arc groove 2482 of the second connector 248 and the sixth arc groove 2856a of the second synchronizing member 285, respectively. Meanwhile, the first adjusting shaft 2362 and the second adjusting shaft 2372 rotate and slide in the first adjusting groove 2734 and the second adjusting groove 2754, respectively. Specifically, the first adjusting shaft 2362 is displaced from the first positioning section 2734a to the second positioning section 2734b, and the second adjusting shaft 2372 is displaced from the third positioning section 2754a to the fourth positioning section 2754b; simultaneously, the first transmission part 2831 and the second transmission part 2851 rotate synchronously in the first spiral groove 2804 and the second spiral groove 2805 respectively, and the first abutting surface 2831a and the second abutting surface 2851a slide against the first spiral surface 2804 respectively. a and the second spiral surface 2805a cause the linkage 280 to move along the direction of the center line O. The first abutment 2507 disengages from the first limiting part 2416 and slides relative to the first damping part 2418 until the first abutment 2507 abuts against the second limiting part 2417, and the second abutment 2508 disengages from the third limiting part 2466 and slides relative to the second damping part 2468 until the second abutment 2508 abuts against the fourth limiting part 2467. The first synchronizer 283 rotates around the first spiral rail 2803 to drive the linkage 280 to slide relative to the base 23. The linkage 280 simultaneously drives the second synchronizer 285 to rotate around the second spiral rail 2806, thus achieving synchronous folding of the first synchronizer 283 and the second synchronizer 285; or the second synchronizer 285 rotates around the second spiral rail 2806 to drive the linkage 280 to slide relative to the base 23. The linkage 280 simultaneously drives the first synchronizer 283 to rotate around the first spiral rail 2803, thus achieving synchronous folding of the first synchronizer 283 and the second synchronizer 285.Therefore, the synchronization mechanism 28 of the rotating shaft assembly 22 does not require gear meshing, which simplifies the structure of the rotating shaft assembly 22, reduces manufacturing costs, and decreases the overall size of the rotating shaft assembly 22, thus facilitating product miniaturization. Secondly, when the first abutment 2507 slides relative to the first damping part 2418 and the second abutment 2508 slides relative to the second damping part 2556c, the frictional resistance between the abutment member 250 and the first rotating member 241 and the second rotating member 246 enables the first rotating mechanism 240 and the second rotating mechanism 245 to move relative to the base 2. The positioning of the first synchronizing member 283 and the second synchronizing member 285 relative to the base 23, and the positioning of the linkage member 280 relative to the base 23, allows the first rotating mechanism 240 to be positioned relative to the base 23 at any angle between 0 and 90 degrees, and the second rotating mechanism 245 to be positioned relative to the base 23 at any angle between 0 and 90 degrees; at the same time, it allows the first side support member 273 and the second side support member 275 to be positioned relative to the base 23 at any angle between 0 and 120 degrees, respectively, so that the electronic device 100 can achieve a large-angle hovering.

[0092] When the pivot assembly 22 is unfolded from a fully folded state, the movement process of each component is the reverse of that when the pivot assembly 22 is bent from a flattened state, which will not be described in detail here.

[0093] Please refer to the following: Figures 1-5The installed pivot assembly 22 is placed between the two frames 21, and the opposite sides of the pivot assembly 22 are fixedly connected to the two frames 21 respectively. Specifically, the first side support 273 and the second side support 275 on opposite sides of the base 23 are respectively accommodated in the mounting grooves 216 of the two frames 21, and the ends of the first connector 243 and the first synchronization member 283 away from the base 23 are connected to one of the frames 21, and the ends of the second connector 248 and the second synchronization member 285 away from the base 23 are connected to the other frame 21. At this time, the front faces 211 of the two frames 21, the front faces of the first side support 273 and the second side support 275 are coplanar. The back of the flexible screen 30 is connected to the front 211 of the two frames 21 and the front of the hinge assembly 22. Specifically, the bendable area 31 is attached to the front of the first side support 273 and the front of the second side support 275 of the hinge assembly 22, and the two non-bendable areas 33 are attached to the front 211 of the two frames 21 respectively. Since the first rotating member 241 and the second rotating member 246 of the hinge assembly 22 are directly rotatably connected to the abutment member 250, and the linkage member 280 cooperates with the first synchronization member 283 and the second synchronization member 285 to achieve synchronous flattening or synchronous folding, the hinge assembly 22 has fewer components, a simple structure, and low manufacturing cost. Secondly, the overall volume of the hinge assembly 22 is small, thus reducing the internal space occupied by the hinge assembly 22 in the housing 20, which is beneficial for the layout of other components such as the motherboard or battery, and for the miniaturization and thinning of the electronic device 100.

[0094] Please refer to the following: Figures 1-5 and Figures 20-27When bending the electronic device 100, a bending force is applied to at least one of the two frames 21 of the electronic device 100, causing the first rotating mechanism 240 and the second rotating mechanism 245 connected to the two frames 21 to rotate relative to the base 23 and rotate toward each other. Simultaneously, the first synchronizing member 283 and the second synchronizing member 285 rotate relative to the base 23 and rotate toward each other. The side of the first side support member 273 away from the base 23 rotates relative to the first connecting member 243 and the first synchronizing member 283, and the first... The side support 273 is rotatably and slidably connected to the base 23 through the cooperation of the first adjusting shaft 2362 and the first adjusting groove 2734. The side of the second side support 273 away from the base 23 rotates relative to the second connecting member 248 and the second synchronizing member 285. The second side support 273 is rotatably and slidably connected to the base 23 through the cooperation of the second adjusting shaft 2372 and the second adjusting groove 2754, so as to realize the synchronous folding of the rotating shaft assembly 22. The bendable area 31 of the flexible screen 30 bends with the rotating shaft assembly 22. Specifically, if a bending force is applied to the frame 21 connected to the first connector 243 and the first synchronizer 240, the frame 21 will cause the first rotating member 241 to rotate around the first arc strip 2310 and the first arc rail 2501 relative to the base 23 towards the side closer to the flexible screen 30. The first rotating part 2831 pushes the linkage 280 to slide, thereby causing the second transmission part 2851 in the second spiral groove 2805 to rotate synchronously around the second connector 2802 relative to the base 23, thereby realizing that the first synchronizer 283 and the second synchronizer 285 rotate synchronously relative to the base 23 and move closer to each other.Simultaneously, the first connecting member 243 and the first side support member 273 rotate through the cooperation of the third arc rail 2731 and the third arc groove 2432; the first synchronizing member 283 and the first side support member 273 rotate through the cooperation of the fifth arc groove 2836a and the third arc rail 2731; the second connecting member 248 and the second side support member 275 rotate through the cooperation of the fourth arc rail 2751 and the fourth arc groove 2482; the second synchronizing member 285 and the second side support member 275 rotate through the cooperation of the sixth arc groove 2856a and the fourth arc rail 2751; and the first adjusting shaft 2362 and the second adjusting shaft 2372 on the base 23 slide and rotate in the first adjusting groove 2734 and the second adjusting groove 2754 respectively, so that the base 23 relative to the first side support members 273 and the second side support member 273 on both sides rotate. The second side support members 275 move closer together until the first adjustment shaft 2362 is limited to the second positioning section 2734b and the second adjustment shaft 2372 is limited to the fourth positioning section 2754b, and the first abutment 2507 of the abutment member 250 is limited to the second limiting part 2417, while the second abutment 2508 is limited to the fourth limiting part 2467, so as to prevent the first rotation mechanism 240, the second rotation mechanism 245, the first synchronization member 283 and the second synchronization member 285 from rotating relative to the base, and to prevent the linkage member 280 from sliding relative to the base 23. The front of the first side support member 273 and the front of the second side support member 275 form a teardrop-shaped cross section. The bendable area 31 of the flexible screen 30 bends with the rotating shaft assembly 22 until the bendable area 31 bends into a teardrop shape, thereby realizing the folding of the electronic device 100.

[0095] When flattening the electronic device 100, a flattening force is applied to at least one of the two frames 21 of the electronic device 100, causing the first rotating mechanism 240 and the second rotating mechanism 245 connected to the two frames 21 to rotate relative to the base 23 in a direction away from each other. Simultaneously, the first synchronizing member 283 and the second synchronizing member 285 rotate relative to the base 23 in a direction away from each other. The side of the first side support member 273 away from the base 23 rotates relative to the first connecting member 243 and the first synchronizing member 283, and... The first side support 273 is rotatably and slidably connected to the base 23 through the cooperation of the first adjusting shaft 2362 and the first adjusting groove 2734. The side of the second side support 273 away from the base 23 rotates relative to the second rotating member 246 and the second synchronizing member 285. The second side support 273 is rotatably and slidably connected to the base 23 through the cooperation of the second adjusting shaft 2372 and the second adjusting groove 2754, so as to realize the flattening of the rotating shaft assembly 22. The bendable area 31 of the flexible screen 30 is flattened along with the rotating shaft assembly 22.Specifically, if a flattening force is applied to the frame 21 connected to the first connector 243 and the first synchronizer 240, the frame 21 will cause the first rotating member 241 to rotate around the first arc strip 2310 and the first arc track 2501 relative to the base 23, moving away from the flexible screen 30; the first transmission part 2831 pushes the linkage 280 to slide, thereby causing the second transmission part 2851 in the second spiral groove 2805 to rotate synchronously around the second connector 2802 relative to the base 23, so that the second rotating member 241... 46 rotates synchronously to the side away from the flexible screen 30, thereby realizing that the first rotating mechanism 240 and the second rotating mechanism 245 rotate synchronously relative to the base 23 and move away from each other; at the same time, the first connecting member 243 and the first side support member 273 rotate through the cooperation of the third arc rail 2731 and the third arc groove 2432, the first synchronizing member 283 and the first side support member 273 rotate through the cooperation of the fifth arc groove 2836a and the third arc rail 2731, and the second connecting member 248 and the first side support member 273 rotate through the cooperation of the fifth arc groove 2836a and the third arc rail 2731. The two side supports 275 rotate through the cooperation of the fourth arc rail 2751 and the fourth arc groove 2482. The second synchronizing member 285 rotates with the second side support 275 through the cooperation of the sixth arc groove 2856a and the fourth arc rail 2751. The first adjusting shaft 2362 and the second adjusting shaft 2372 on the base 23 slide and rotate in the first adjusting groove 2734 and the second adjusting groove 2754 respectively, so that the base 23 rotates relative to the first side support 273 and the second side support on both sides. The components 275 move away from each other until the first abutment 2507 is limited to the first limiting portion 2416 and the second abutment 2508 is limited to the third limiting portion 2466, so that the first side support member 273 and the second side support member 275 on opposite sides of the base 23 are flattened together until the first side support member 273 and the second side support member 275 are flattened. The bendable area 31 of the flexible screen 30 is flattened along with the rotating shaft assembly 22 until the flexible screen 30 is completely flattened, thereby realizing the flattening of the electronic device 100.

[0096] The rotating shaft assembly 22 of the electronic device 100 of the present invention achieves synchronous bending or synchronous unfolding by rotating synchronously relative to the base 23 through the first synchronizing member 283 and the second synchronizing member 285, which is convenient to operate; the rotating shaft assembly 22 has fewer components, simple structure, and low manufacturing cost, which reduces the internal space occupied by the rotating shaft assembly 22 in the housing 20, and is beneficial to the layout of other components such as the motherboard or battery. Secondly, when the electronic device 100 is in a fully folded state, the first adjustment shaft 2362 is limited to the second positioning segment 2734b and the second adjustment shaft 2372 is limited to the fourth positioning segment 2754b, and the first abutment 2507 is limited to the second limiting portion 2417 and the second abutment 2508 is limited to the fourth limiting portion 2467. Therefore, when the electronic device 100 is dropped, the components are not easily displaced, thus avoiding damage to the flexible screen 30. When the electronic device 100 is in a fully flattened state, the first adjustment shaft 2362 is limited to the first positioning segment 2734a and the second adjustment shaft 2372 is limited to the third positioning segment 2754a, and the first abutment 2507 is limited to the first limiting portion 2416 and the second abutment 2508 is limited to the third limiting portion 2466. Therefore, when the electronic device 100 is dropped, the components are not easily displaced, thus avoiding damage to the flexible screen 30. In addition, the hinge assembly 22 uses the frictional resistance between the first abutment 2507 and the first damping part 2418 and the frictional resistance between the second abutment 2508 and the second damping part 2468 to position the flexible screen 30's bendable area 31 at any bending angle, so that the two frames 21 can be freely adjusted in the flattened state, folded state and intermediate state. That is, the electronic device 100 can be positioned in the flattened state, folded state and any intermediate state, so that the two frames 21 of the electronic device 100 have a hovering function from 0 degrees to 180 degrees, with a large hovering angle range.

[0097] The above are the embodiments of the present invention. It should be noted that for those skilled in the art, several 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 assembly, characterized in that, The rotating shaft assembly includes: Base; A first rotating mechanism is rotatably connected to one side of the base. The first rotating mechanism includes a first rotating member rotatably connected to the base. The first rotating member includes a first limiting part and a second limiting part spaced apart. A second rotating mechanism is rotatably connected to the opposite side of the base; A support mechanism, comprising a first side support member and a second side support member, wherein the first side support member is slidably and rotatably connected to the base and rotatably connected to a first rotating mechanism; the second side support member is slidably and rotatably connected to the base and rotatably connected to a second rotating mechanism; and A damping mechanism includes a stop member and a first elastic member slidably connected to the base. The stop member includes a first abutment top. A first rotating mechanism is rotatably connected to the stop member via a first arc track and a first arc groove. A second rotating mechanism is rotatably connected to the stop member via a second arc track and a second arc groove. The axis of the first arc groove is parallel to the axis of the second arc groove. The first elastic member has a pre-elastic force that causes the stop member to abut against the first rotating mechanism and / or the second rotating mechanism. When the first side support member and the second side support member are in a flattened state, the first abutment top abuts against the first limiting part. When the first side support member and the second side support member are in a folded state, the first abutment top abuts against the second limiting part.

2. The rotating shaft assembly according to claim 1, characterized in that, The first arc track is disposed on one of the first rotating member and the abutting member, and the first arc groove is disposed on the other of the first rotating member and the abutting member. The first rotation axis between the first rotating member and the abutting member is collinear with the axis of the first arc groove. The second rotating mechanism includes a second rotating member rotatably connected to the base. The second arc track is disposed on one of the second rotating member and the abutting member, and the second arc groove is disposed on the other of the second rotating member and the abutting member. The second rotation axis between the second rotating member and the abutting member is collinear with the axis of the second arc groove.

3. The rotating shaft assembly according to claim 2, characterized in that, The first rotating member and the second rotating member rotate relative to the base, so that the first side support member and the second side support member can be flattened or folded together.

4. The rotating shaft assembly according to claim 3, characterized in that, And / or, the second rotating member includes a spaced third limiting portion and a fourth limiting portion, and the abutting member further includes a second abutting top. When the first side support member and the second side support member are in a flattened state, the first abutting top abuts against the third limiting portion. When the first side support member and the second side support member are in a folded state, the first abutting top abuts against the fourth limiting portion.

5. The rotating shaft assembly according to claim 4, characterized in that, The first rotating member further includes a first damping part located between the first limiting part and the second limiting part, and / or the second rotating member further includes a second damping part located between the third limiting part and the fourth limiting part. When the first side support member and the second side support member are in an intermediate state, the first abutment abuts against the first damping part, and the second abutment abuts against the second damping part.

6. The rotating shaft assembly according to claim 4, characterized in that, The abutment further includes a first sliding part, which is slidably connected to the base through a first guide groove and a first guide rail. The first guide groove extends parallel to the first rotation axis between the first rotating mechanism and the base. The first guide groove is provided in one of the base and the abutment, and the first guide rail is provided in the other of the base and the abutment.

7. The rotating shaft assembly according to claim 6, characterized in that, The abutting member further includes a first extension arm and a second extension arm disposed on opposite sides of the first sliding portion. The first extension arm is provided with a first arc track at the end away from the first sliding portion, and the second extension arm is provided with a second arc track at the end away from the first sliding portion. The first abutting point is disposed on the side of the first extension arm close to the first arc track, and the second abutting point is disposed on the side of the second extension arm close to the second arc track.

8. The rotating shaft assembly according to claim 7, characterized in that, The first abutment is connected to the arc surface of the first arc track away from the first sliding part, and the length of the first arc track extending in the first direction is greater than the length of the first abutment extending in the first direction. The second abutment is connected to the arc surface of the second arc track away from the first sliding part, and the length of the second arc track extending in the first direction is greater than the length of the second abutment extending in the first direction.

9. The rotating shaft assembly according to claim 7, characterized in that, The abutting member further includes a first positioning part and a second positioning part. The first positioning part is located on the side of the first extension arm away from the first arc rail, and the second positioning part is located on the side of the second extension arm away from the second arc rail. The first positioning part and the second positioning part are used to position the two first elastic members respectively.

10. The rotating shaft assembly according to claim 2, characterized in that, The first rotation axis between the first rotating member and the base is parallel to the first direction, the second rotation axis between the second rotating member and the base is parallel to the first direction, the first rotation axis and the second rotation axis are spaced apart, and the first rotating member and the second rotating member are misaligned in the first direction.

11. The rotating shaft assembly according to claim 3, characterized in that, The first side support includes a first adjusting arm with a first adjusting groove. One end of the first adjusting groove passes through the end of the first adjusting arm near the base to form a first opening. The base includes a first adjusting shaft with its axis parallel to a first rotation axis between the first rotating member and the base. The first adjusting shaft can be inserted into the first adjusting groove through the first opening. The second side support includes a second adjusting arm with a second adjusting groove. One end of the second adjusting groove passes through the end of the second adjusting arm near the base to form a second opening. The base also includes a second adjusting shaft with its axis parallel to a second rotation axis between the second rotating member and the base. The second adjusting shaft can be inserted into the second adjusting groove through the second opening.

12. The rotating shaft assembly according to claim 1, characterized in that, The rotating shaft assembly further includes a synchronization mechanism, which includes a linkage member, a first synchronization member, and a second synchronization member. The linkage member is connected to the base and can slide relative to the base in a first direction. The linkage member includes a first connecting portion and a second connecting portion. The first synchronization member and the first connecting portion are rotatably connected through a first helical groove and a first transmission part. The second synchronization member and the second connecting portion are rotatably connected through a second helical groove and a second transmission part. The first helical groove and the second helical groove have opposite rotation directions.

13. The shaft assembly according to claim 12, characterized in that, The first spiral groove is provided in one of the first connecting part and the first synchronizing member, and the first transmission part is provided in the other of the first connecting part and the first synchronizing member; the second spiral groove is provided in one of the second synchronizing member and the second connecting part, and the second transmission part is provided in the other of the second synchronizing member and the second connecting part.

14. The rotating shaft assembly according to claim 12, characterized in that, The third rotation axis between the first synchronizing element and the first connecting part is parallel to the first direction, and the fourth rotation axis between the second synchronizing element and the second connecting part is parallel to the first direction, and the third rotation axis and the fourth rotation axis are parallel to or coincide with each other.

15. The shaft assembly according to claim 14, characterized in that, The first connecting portion and the second connecting portion are respectively located on both sides of the center line of the linkage member, and the center line of the linkage member is parallel to the first direction; the first spiral groove is formed in the first connecting portion, the first synchronizing member includes the first transmission portion, the second spiral groove is formed in the second connecting portion, the second synchronizing member includes the second transmission portion, and the first spiral groove and the second spiral groove are offset from each other in the first direction.

16. The rotating shaft assembly according to claim 14, characterized in that, The first connecting part has two first spiral surfaces on opposite sides of the first spiral groove along the first direction. The first transmission part includes two opposite first abutting surfaces, and the two first abutting surfaces are respectively in contact with the two first spiral surfaces. The second connecting part has two second spiral surfaces on opposite sides of the second spiral groove along the first direction. The second transmission part includes two opposite second abutting surfaces, and the two second abutting surfaces are respectively in contact with the two second spiral surfaces. The first spiral surfaces and the second spiral surfaces have opposite directions of rotation.

17. The shaft assembly according to claim 16, characterized in that, The first connecting part has a first spiral rail on the first spiral surface of the first spiral groove, and the first transmission part has a first transmission groove corresponding to the first spiral rail, with the first spiral rail housed in the first transmission groove; the second connecting part has a second spiral rail on the second spiral surface of the second spiral groove, and the second transmission part has a second transmission groove corresponding to the second spiral rail, with the second spiral rail housed in the second transmission groove; the first spiral rail has the same rotation direction as the first spiral groove, and the second spiral rail has the same rotation direction as the second spiral groove.

18. The shaft assembly according to claim 16, characterized in that, The first synchronizing element includes a first pushing block, a second pushing block, and a second elastic element clamped between the first pushing block and the second pushing block. The first transmission part includes a first transmission block disposed on the first pushing block and a second transmission block disposed on the second pushing block. Two first abutting surfaces are respectively disposed on opposite sides of the first transmission block and the second transmission block. The second elastic element pushes against the first pushing block and the second pushing block respectively, so that the two first abutting surfaces abut against the two first spiral surfaces respectively. The second synchronizing element includes a third pushing block, a fourth pushing block, and a third elastic element clamped between the third pushing block and the fourth pushing block. The second transmission part includes a third transmission block disposed on the third pushing block and a fourth transmission block disposed on the fourth pushing block. Two second abutting surfaces are respectively disposed on opposite sides of the third transmission block and the fourth transmission block. The third elastic element pushes against the third pushing block and the fourth pushing block respectively, so that the two second abutting surfaces abut against the two second spiral surfaces respectively.

19. The rotating shaft assembly according to claim 16, characterized in that, The linkage component and the base are slidably connected by a second guide groove and a second guide rail. The second guide groove is provided in one of the base and the linkage component and extends along a first direction, and the second guide rail is provided in the other of the linkage component and the base.

20. The rotating shaft assembly according to claim 3, characterized in that, When the first side support and the second side support are in a flattened state, the sides of the first side support and the second side support that face each other are in contact.

21. A folding shell, characterized in that, The folding housing includes a pivot assembly as described in any one of claims 1-20 and two frames, the pivot assembly being located between the two frames, the end of the first rotating mechanism away from the base being connected to one of the frames, and the end of the second rotating mechanism away from the base being connected to the other frame.

22. An electronic device, characterized in that, The electronic device includes a flexible screen, two frames, and a pivot assembly as described in any one of claims 1-20. The pivot assembly is located between the two frames. The end of the first rotating mechanism away from the base is connected to one of the frames, and the end of the second rotating mechanism away from the base is connected to the other frame. The flexible screen is connected to the two frames and the pivot assembly.

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