Rotating shaft device, folding shell and electronic equipment

Abstract

The invention provides a rotating shaft device which comprises a base, a pair of connecting shafts, a first connecting rod piece, a second connecting rod piece and a linkage assembly, the connecting shafts are arranged on the two opposite sides of the base respectively, the first connecting rod piece and the second connecting rod piece are rotationally connected to the two connecting shafts respectively, and the linkage assembly is arranged between the first connecting rod piece and the second connecting rod piece. The linkage assembly comprises a first linkage piece, a second linkage piece and an abutting piece. The first linkage piece and the second linkage piece are both connected to the pair of connecting shafts in a sliding mode. The first connecting rod piece is connected with the first linkage piece and the second linkage piece in a matched mode through double-helix curved surfaces, and the second connecting rod piece is connected with the first linkage piece and the second linkage piece in a matched mode through double-helix curved surfaces. When the first connecting rod piece and / or the second connecting rod piece rotate around the corresponding connecting shaft, the linkage assembly slides in the axial direction of the connecting shaft so as to drive the first connecting rod piece and the second connecting rod piece to synchronously and reversely rotate relative to the base. The invention further provides the folding shell and the electronic equipment.

Description

Technical Field

[0001] The present invention relates to the field of electronic equipment, and in particular to a hinge device for supporting a flexible screen, a folding shell provided with the hinge device, and an electronic device provided with the folding shell. Background Art

[0002] With the development of display equipment, bendable flexible display screens have appeared. Folding screen devices equipped with bendable flexible display screens are becoming more and more popular due to their unique shape and diverse functions. The bendable flexible display screens of folding screen devices in related technologies are generally supported by a shaft device. Existing shaft devices generally achieve synchronous folding or flattening through a gear synchronization structure. However, with the miniaturization of the shaft device, the shaft device does not have enough space to accommodate the synchronization structure, that is, the use of a gear synchronization structure can no longer meet the requirements of synchronous folding or unfolding of the shaft device. Summary of the invention

[0003] The present application provides a hinge device, a folding housing provided with the hinge device, and an electronic device provided with the folding housing.

[0004] The present application provides a rotating shaft device, which includes a base, a pair of connecting shafts, a first connecting rod, a second connecting rod and a linkage assembly, wherein one of the connecting shafts is arranged on one side of the base, and the other connecting shaft is arranged on the other side of the base; the first connecting rod is rotatably connected to one of the connecting shafts, and the second connecting rod is rotatably connected to the other connecting shaft; the linkage member is arranged between the first connecting rod and the second connecting rod, and the linkage assembly includes a first linkage member, a second linkage member, and a push member connected between the first linkage member and the second linkage member; the first linkage member and the second linkage member are both slidably connected to the pair of connecting shafts; the first connecting rod is respectively connected to the first linkage member and the second linkage member through a double helical surface, and the second connecting rod is respectively connected to the first linkage member and the second linkage member through a double helical surface; when the first connecting rod and / or the second connecting rod rotate around the corresponding connecting shaft, the linkage assembly slides along the axial direction of the connecting shaft to drive the first connecting rod and the second connecting rod to rotate synchronously relative to the base.

[0005] The present application also provides a folding shell, which includes the above-mentioned rotating shaft device and two frames, and the opposite sides of the rotating shaft device are respectively connected to the two frames.

[0006] The present application also provides an electronic device, which includes a flexible screen, two frames and the above-mentioned hinge device, wherein the opposite sides of the hinge device are respectively connected to the two frames, and the flexible screen is connected to the two frames and the hinge device.

[0007] The first connecting rod member and the second connecting rod member of the rotating shaft device of the present invention are respectively rotatably connected to the opposite sides of the base, the first rotating mechanism and the second rotating mechanism are respectively rotatably connected to the opposite sides of the base, the first connecting rod member is respectively connected to the first linkage member and the second linkage member through a double helical surface, and the second connecting rod member is respectively connected to the first linkage member and the second linkage member through a double helical surface; when the first connecting rod member or the second connecting rod member rotates relative to the base, the linkage assembly between the first connecting rod member and the second connecting rod member moves along the axial direction of the connecting shaft to drive the first connecting rod member and the second connecting rod member to rotate synchronously in opposite directions relative to the base, thereby realizing synchronous folding or synchronous unfolding of the rotating shaft device; since the rotating shaft device in the present application can realize synchronous folding or flattening without using gears, and the linkage assembly is arranged between the first connecting rod member and the second connecting rod member, it occupies less space of the rotating shaft device, thereby reducing the overall volume of the rotating shaft device, which is conducive to the miniaturization development of the rotating shaft device. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the implementation. Obviously, the drawings described below relate to some implementations of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative work.

[0009] Figure 1 is a schematic diagram of a three-dimensional structure of an electronic device in an embodiment of the present application;

[0010] Figure 2 yes Figure 1 A schematic diagram of a three-dimensional structure decomposition of a foldable housing and a flexible screen of an electronic device;

[0011] Figure 3 yes Figure 2 A schematic diagram of the three-dimensional structure of the folded shell;

[0012] Figure 4 yes Figure 3 A schematic diagram of a three-dimensional structure explosion of the rotating shaft device;

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

[0014] Figure 6 yes Figure 4 A schematic diagram of the three-dimensional structure of the rotation-assisting mechanism;

[0015] Figure 7 yes Figure 6 A schematic diagram of the three-dimensional structure of the rotation-assisting mechanism from another perspective;

[0016] Figure 8 yes Figure 6 A further three-dimensional structural schematic diagram of the rotation-assisting mechanism in FIG.

[0017] Fig. 9 yes Figure 7 A further schematic diagram of the three-dimensional structure decomposition of the rotation-assisting mechanism;

[0018] Fig.10 yes Figure 8 A further schematic diagram of the three-dimensional structure decomposition of the rotation-assisting mechanism;

[0019] Fig.11 yes Fig. 9 A further schematic diagram of the three-dimensional structure decomposition of the rotation-assisting mechanism;

[0020] Fig.12 yes Fig.10 A three-dimensional structure enlarged view of the base, rotating mechanism, push member and connecting rod member;

[0021] Fig.13 yes Fig.10 A schematic diagram of the three-dimensional structure of the connecting rod assembly, linkage assembly and damping mechanism;

[0022] Fig.14 yes Fig.11 A schematic diagram of the three-dimensional structure of the connecting rod assembly, linkage assembly and damping mechanism;

[0023] Fig.15 yes Fig.13 A schematic diagram of a three-dimensional structure of the linkage component from another perspective;

[0024] Fig.16 yes Fig.15 A schematic diagram of a three-dimensional structure of the linkage component from another perspective;

[0025] Fig.17 yes Figure 5 A schematic diagram of the front structure of the rotation-assisting mechanism;

[0026] Fig.18 yes Figure 5 A three-dimensional cross-sectional view of the rotation-assisting mechanism;

[0027] Fig.19 yes Fig.18 A cross-sectional view of the rotating shaft device in FIG.

[0028] Fig. 20 yes Figure 5Another three-dimensional cross-sectional view of the rotating shaft device in FIG.

[0029] Fig.21 yes Fig. 20 A cross-sectional view of the rotating shaft device in FIG.

[0030] Fig. 22 yes Figure 1 A schematic diagram of a three-dimensional structure of an electronic device in a fully folded state;

[0031] Fig.23 yes Fig. 22 Schematic diagram of the three-dimensional structure of the auxiliary rotation mechanism.

[0032] Main markings:

[0033] 100, electronic device; 20, folding housing; 21, frame; 211, first front face; 214, side face; 215, end face; 216, mounting groove; 22, folding device; 220, base; 221, first mounting portion; 2211, third arc groove; 2212, first convex block; 2213, fourth arc groove; 2214, second convex block; 2215, first rotation-assisting groove; 2216, second rotation-assisting groove; 223, second mounting portion; 2231, support bar; 2233, first anti-slip portion; 2234, first connecting hole; 2235, second anti-slip portion; 2236, second connecting hole; 225, third mounting portion; 2251, connecting bar; 2253, supporting sheet; 2255, guide rail; 226, connecting shaft ;2265, snap-on groove;23, support mechanism;231, middle support member;233, first side support member;2330, first adjustment groove;2331, first side support plate;2332, first adjustment plate;2333, first positioning section;2334, second positioning section;2335, first arc plate;2336, first arc rail;235, second side support member;2350, second adjustment groove;2351, second side support plate;2352, second adjustment plate;2353, third positioning section;2354, fourth positioning section;2355, second arc plate;2356, second arc rail;24, positioning member;242, positioning portion;245, connecting portion;2452, guide groove;246, slide groove;2 5. Rotation mechanism; 250. First rotation mechanism; 251. First rotation member; 2510. Third circular arc track; 2511. First rotating part; 2512. First connecting part; 2514. First sleeve; 2515. First axial hole; 252. First connecting member; 2520. First slide groove; 2521. First transfer part; 2521a. First avoidance opening; 2521b. First connecting hole; 2522. First circular arc groove; 2523. First guide slide part; 2523a. First guide groove; 2526. First adjustment shaft; 255. Second rotation mechanism; 256. Second rotation member; 2560. Fourth circular arc track; 2561. Second rotating part; 2562. Second connecting part; 2564. Second sleeve; 2565. second shaft hole; 257, second connecting member; 2570, second slide groove; 2571, second transition part; 2571a, second avoidance port; 2571b, second connecting hole; 2572, second arc groove; 2573, second guide slide part; 2573a, second guide groove; 2576, second adjustment shaft; 26, connecting rod assembly; 261, first connecting rod member; 2610, first slide rail; 2611, first rotating part; 2612, first rotating hole; 2613, first sliding part; 2615, first connecting part; 2616, first cam; 2616a, first protruding part; 2616b, first recessed part; 2617, first receiving groove; 2617a, first abutting spiral surface; 2617b, second abutting spiral surface;2618, first anti-slip groove; 265, second connecting rod; 2650, second slide rail; 2651, second rotating part; 2652, second rotating hole; 2653, second sliding part; 2655, second connecting part; 2656, second cam; 2656a, second protruding part; 2656b, second recessed part; 2657, second receiving groove; 2657a, third abutting spiral surface; 2657b, fourth abutting spiral surface; 2658, second anti-slip groove; 28, linkage assembly; 281, first linkage member; 2811, first sliding part; 2812, first spiral surface; 2814, second spiral surface; 2813, third spiral surface; 2815, fourth spiral surface; 2816, first connecting plate; 2817, first Sliding groove; 283, second linkage member; 2831, second sliding part; 2836, second connecting plate; 2837, second sliding groove; 285, abutting member; 2852, abutting top; 2853, slot; 29, damping mechanism; 291, first abutting member; 2910, first abutting cam; 2911, third protruding part; 2913, third recessed part; 292, first abutting cylinder; 293, first connecting part; 294, first elastic member; 295, second abutting member; 2950, ​​second abutting cam; 2951, fourth protruding part; 2953, fourth recessed part; 296, second abutting cylinder; 297, second connecting part; 298, second elastic member; 30, flexible screen; 31, bendable area; 33, non-bending area. ; DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In addition, the following descriptions of the various embodiments are made with reference to the attached drawings to illustrate specific embodiments that the present application may be implemented in. Directional terms mentioned in the present application, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the present application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set on..." should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] Please also read Figures 1 to 3 The electronic device 100 in one embodiment of the present invention includes a foldable housing 20 and a flexible screen 30 disposed on the foldable housing 20, and the flexible screen 30 can be bent or flattened with the foldable housing 20. The foldable housing 20 includes two frames 21 and a hinge device 22 connected between the two frames 21, and the opposite sides of the hinge device 22 are respectively connected to the two frames 21. The two frames 21 are synchronously rotated through the hinge device 22 to achieve mutual folding or mutual flattening. The flexible screen 30 includes a bendable area 31 corresponding to the hinge device 22, and two non-bending areas 33 connected to the opposite sides of the bendable area 31. The flexible screen 30 is disposed on the front of the two frames 21 and the front of the hinge device 22. Specifically, the two non-bending areas 33 of the flexible screen 30 can be fixed on the front of the two frames 21 respectively, and the bendable area 31 is attached to the front of the hinge device 22. The bendable area 31 of the flexible screen 30 can be bent or flattened with the hinge device 22. The flexible screen 30 can be, but is not limited to, various flexible components with corresponding functions such as a flexible display screen, a flexible touch screen, a flexible touch display screen, or a flexible component fixedly bonded to a flexible support plate, such as a flexible display screen bonded to a flexible steel plate, a flexible touch screen, etc.

[0038] Please also read Figure 3-Figure 11The rotating shaft device 22 includes an auxiliary rotation mechanism and a supporting mechanism 23. The auxiliary rotation mechanism includes a base 220, a pair of connecting shafts 226, a rotating mechanism 25, a connecting rod assembly 26 and a linkage assembly 28, wherein one connecting shaft 226 is arranged on one side of the base 220, and the other connecting shaft 226 is arranged on the other side of the base 220, and the axes of the pair of connecting shafts 226 are spaced and parallel; the supporting mechanism 23 includes a middle support member 231, a first side support member 233 and a second side support member 235, and the first side support member 233 and the second side support member 235 are respectively located on the opposite sides of the middle support member 231; the rotating mechanism 25 includes a first rotating mechanism 250 and a second rotating mechanism 255, and the first rotating mechanism 250 is rotatably connected to the base 220 One side, the second rotating mechanism 255 is rotatably connected to the other side opposite to the base 220; the connecting rod assembly 26 includes a first connecting rod member 261 and a second connecting rod member 265, the first connecting rod member 261 is rotatably connected to one of the connecting shafts 226, and the first connecting rod member 261 can rotate relative to the base 220 around the axis of the connecting shaft 226; the second connecting rod member 265 is rotatably connected to the other connecting shaft 226, and the second connecting rod member 265 can rotate relative to the base 220 around the axis of the connecting shaft 226; the end of the first connecting rod member 261 away from the base 220 is movably connected to the first rotating mechanism 250 through the cooperation of a slide groove and a slide rail, the slide groove is provided in one of the first connecting rod member 261 and the first rotating mechanism 250, and the slide rail is provided between the first connecting rod member 261 and the first rotating mechanism 250. The other of the first and second rotating mechanisms 250, the slide rail is slidably inserted in the slide groove; the end of the second link member 265 away from the base 220 is movably connected to the second rotating mechanism 255 through the cooperation of the slide groove and the slide rail, the slide groove is provided in one of the second link member 265 and the second rotating mechanism 255, and the slide rail is provided in the other of the second link member 265 and the second rotating mechanism 255; the linkage assembly 28 is provided between the first link member 261 and the second link member 265, the linkage assembly 28 includes a first linkage member 281, a second linkage member 283, and a push member 285 located between the first linkage member 281 and the second linkage member 283, the first linkage member 281 and the second linkage member 283 are both slidably connected to a pair of connecting shafts 226; the first The connecting rod 261 is respectively connected to the first linkage member 281 and the second linkage member 283 through a double helical surface, and the second connecting rod 265 is respectively connected to the first linkage member 281 and the second linkage member 283 through a double helical surface; one side of the push-up member 285 pushes the first linkage member 281 to push the first connecting rod member 261 and the second connecting rod member 265, and the other side of the push-up member 285 pushes the second linkage member 283 to push the first connecting rod member 261 and the second connecting rod member 265; when the first connecting rod member 261 and / or the second connecting rod member 265 rotates around the corresponding connecting shaft 226, the linkage assembly 28 slides along the axial direction of the connecting shaft 226 to drive the first connecting rod member 261 and the second connecting rod member 265 to rotate synchronously relative to the base 220;Specifically, when the first rotating mechanism 250 and / or the second rotating mechanism 255 rotate relative to the base 220, the first rotating mechanism 250 drives the first link member 261 to rotate relative to the base 220, or the second rotating mechanism 255 drives the second link member 265 to rotate relative to the base 220, and the linkage assembly 28 provided between the first link member 261 and the second link member 265 can make the first link member 261 and the second link member 265 rotate synchronously in opposite directions relative to the base 220, so as to realize the synchronous folding or synchronous unfolding of the first link member 261 and the second link member 265, and the first side support member 233 and the second side support member 235 can be synchronously folded or synchronously unfolded.;

[0039] In this embodiment, the front side refers to the side facing the same direction as the light emitting side of the flexible screen 30, and the back side refers to the side facing away from the light emitting side of the flexible screen 30. The electronic device 100 is, for example, but not limited to, a mobile phone, a tablet computer, a display, a liquid crystal panel, an OLED panel, a television, a smart watch, a VR head-mounted display, a car display, and any other product or component with a display function.

[0040] The base 220 of the rotating shaft device 22 of the present invention is provided with connecting shafts 226 on opposite sides, the first connecting rod 261 and the second connecting rod 265 are respectively rotatably connected to the two connecting shafts 226, the first rotating mechanism 250 and the second rotating mechanism 255 are respectively rotatably connected to the opposite sides of the base 220, the end of the first connecting rod 261 away from the base 220 is slidably connected to the side of the first rotating mechanism 250 away from the base 220 through the cooperation of the slide groove and the slide rail, the end of the second connecting rod 265 away from the base 220 is slidably connected to the side of the second rotating mechanism 255 away from the base 220 through the cooperation of the slide groove and the slide rail, the first connecting rod 261 is respectively connected to the first linkage member 281 and the second linkage member 283 through the cooperation of the double helical surface, and the second connecting rod 265 is respectively connected to the first linkage member 281 and the second linkage member 283 The first and second connecting rods 261 and 265 are connected by a double helical surface. Therefore, when the first connecting rod 261 or the second connecting rod 265 rotates relative to the base 220, the linkage assembly 28 between the first connecting rod 261 and the second connecting rod 265 moves along the axial direction of the connecting shaft 226 to drive the first connecting rod 261 and the second connecting rod 265 to rotate synchronously in the opposite direction relative to the base 220, thereby realizing that the first side support member 233 and the second side support member 235 of the rotating shaft device 22 can be synchronously folded or unfolded with each other; since the rotating shaft device 22 in the present application can achieve synchronous folding or flattening without the use of gears, and the linkage assembly 28 is arranged between the first connecting rod 261 and the second connecting rod 265, the linkage assembly 28 occupies a smaller space of the rotating shaft device 22, thereby reducing the overall volume of the rotating shaft device 22, which is conducive to the miniaturization of the rotating shaft device 22.

[0041] like Figure 1-Figure 3 As shown, the frame 21 includes a front face 211, a back face, two opposite side faces 214 and two end faces 215. The hinge device 22 is connected between 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 hinge device 22, and the non-bending area 33 of the flexible screen 30 is connected to the front face 211 of the frame 21. A mounting groove 216 is provided at one end of the front face 211 of each frame 21 close to the hinge device 22. The mounting groove 216 passes through the front face 211 of the frame 21, and the opposite ends of the mounting groove 216 extend to the opposite side faces 214 close to the frame 21. The opposite sides of the hinge device 22 are respectively accommodated in the mounting grooves 216 of the two frames 21, that is, the side of the first rotating mechanism 250 away from the base 220 is connected to the mounting groove 216 of one of the frames 21, and the side of the second rotating mechanism 255 away from the base 220 is connected to the mounting groove 216 of the other frame 21. The back of the frame 21 is provided with a plurality of receiving spaces (not shown in the figure), and the receiving spaces are used to install electronic components such as circuit boards and batteries.

[0042] like Figure 4-Figure 5 As shown, the first rotating mechanism 250 includes a first rotating member 251 and a first connecting member 252, wherein one end of the first rotating member 251 away from the first connecting member 252 is rotatably connected to the base 220, and one end of the first rotating member 251 away from the base 220 is rotatably connected to the first connecting member 252, a first rotating axis L1 between the first rotating member 251 and the base 220, a second rotating axis L2 between the first connecting rod 261 and the base 220, and a third rotating axis L3 between the first rotating member 251 and the first connecting member 252 The lines L3 are parallel to each other; the second rotating mechanism 255 includes a second rotating member 256 and a second connecting member 257, the second rotating member 256 is rotatably connected to the base 220, and the end of the second rotating member 256 away from the base 220 is rotatably connected to the second connecting member 257, the first rotating axis line L1 between the second rotating member 256 and the base 220, the second rotating axis line L2 between the second connecting rod 265 and the base 220, and the third rotating axis line L3 between the second rotating member 256 and the second connecting member 257 are parallel to each other.

[0043] The middle support member 231 covers the front side of the base 220. In this embodiment, the middle support member 231 is a rectangular plate; the first side support member 233 slides and rotates on the side close to the base 220 and is connected to the first connecting member 252, and the first side support member 233 is rotated and connected to the first connecting member 252 on the side away from the base 220; the second side support member 235 slides and rotates on the side close to the base 220 and is connected to the second connecting member 257, and the second side support member 235 is rotated and connected to the second connecting member 257 on the side away from the base 220. Specifically, the first side support member 233 is connected to the first connecting member 252 by a first adjustment groove and a first adjustment shaft, and the first adjustment groove is provided in one of the first side support member 233 and the first connecting member 252, and the first adjustment shaft is provided in the other of the first side support member 233 and the first connecting member 252, and the axis of the first adjustment shaft is parallel to the first rotation axis L1; the second side support member 235 is connected to the second connecting member 257 by a second adjustment groove and a second adjustment shaft, and the second adjustment groove is provided in one of the second side support member 235 and the second connecting member 257, and the second adjustment shaft is provided in the other of the second side support member 235 and the second connecting member 257, and the axis of the second adjustment shaft is parallel to the other first rotation axis L1, and the two first rotation axis L1s are parallel and spaced apart. In this embodiment, a first adjustment shaft 2526 is provided on one side of the first connecting member 252, a first adjustment groove 2330 is provided on one side of the first side supporting member 233 close to the base 220, and the first adjustment shaft 2526 is rollably inserted into the first adjustment groove 2330; a second adjustment shaft 2576 is provided on one side of the second connecting member 257, a second adjustment groove 2350 is provided on one side of the second side supporting member 235 close to the base 220, and the second adjustment shaft 2576 is rollably inserted into the second adjustment groove 2350. When the first side supporting member 233 and the second side supporting member 235 are folded or flattened relative to the middle supporting member 231, the first adjustment shaft 2526 slides and rotates in the first adjustment groove 2330, and the second adjustment shaft 2576 slides and rotates in the second adjustment groove 2350.

[0044] Specifically, the first side support member 233 includes a first side support plate 2331 and a first adjustment plate 2332 provided on the side of the first side support plate 2331 close to the middle support member 231, and the first adjustment slot 2330 is provided on the first adjustment plate 2332. The second side support member 235 includes a second side support plate 2351 and a second adjustment plate 2352 provided on the side of the second side support plate 2351 close to the middle support member 231, and the second adjustment slot 2350 is provided on the second adjustment plate 2352. The first adjustment slot 2330 extends from the side close to the middle support member 231 to the side away from the middle support member 231 and the first side support plate 2331, and the middle part of the first adjustment slot 2330 is bent toward the side away from the first side support plate 2331. The first adjustment slot 2330 includes a first positioning section 2333 and a second positioning section 2334 at opposite ends thereof, and the first positioning section 2333 is closer to the middle support member 231 than the second positioning section 2334. The second adjustment slot 2350 extends from a side close to the middle support member 231 to a side away from the middle support member 231 and the second side support plate 2351, and the middle of the second adjustment slot 2350 is bent toward a side away from the second side support plate 2351; the second adjustment slot 2350 includes a third positioning section 2353 and a fourth positioning section 2354 at opposite ends thereof, and the third positioning section 2353 is closer to the middle support member 231 than the fourth positioning section 2354. When the first side support member 233 and the second side support member 235 are in a completely flattened state, the first adjustment axis 2526 is positioned at the first positioning section 2333, and the second adjustment axis 2576 is positioned at the third positioning section 2353, so that the front surface of the first side support member 233, the front surface of the second side support member 235 and the front surface of the middle support member 231 are coplanar, so that the first side support member 233, the second side support member 235 and the middle support member 231 can stably support the flexible screen to prevent the flexible screen from sinking and being damaged. When the first side support member 233 and the second side support member 235 are in a fully folded state, the first adjustment axis 2526 is positioned at the second positioning segment 2334, and the second adjustment axis 2576 is positioned at the fourth positioning segment 2354, so that the front of the first side support member 233, the front of the middle support member 231, and the front of the second side support member 235 form a teardrop-shaped storage space to facilitate the storage of the bendable area of ​​the flexible screen.

[0045] In this embodiment, first adjustment plates 2332 are respectively provided at opposite ends of the back side of the first side support plate 2331 close to the middle support member 231, and second adjustment plates 2352 are respectively provided at opposite ends of the back side of the second side support plate 2351 close to the middle support member 231. Further, the outer surface of the first adjustment plate 2332 away from the first side support plate 2331 is set as an arc surface, and the outer surface of the second adjustment plate 2352 away from the first side support plate 2331 is set as an arc surface, so as to facilitate the folding or unfolding of the first side support member 233 and the second side support member 235.

[0046] The rotation axis between the first side support member 233 and the first connecting member 252 is parallel to the first rotation axis L1, and the rotation axis between the second side support member 235 and the second connecting member 257 is parallel to the first rotation axis L1. The first side support member 233 and the first connecting member 252 are rotatably connected through the cooperation of the first arc groove and the first arc track. The first arc groove is provided in one of the first side support member 233 and the first connecting member 252, and the first arc track is provided in the other of the first side support member 233 and the first connecting member 252. The axis of the first arc groove is parallel to the first rotation axis L1. Specifically, first arc plates 2335 are respectively provided at the opposite ends of the first side support member 233 away from the middle support member 231, and each first arc plate 2335 is provided with a first arc rail 2336, and the two first arc rails 2336 are coaxial, and first arc grooves 2522 are respectively provided at the opposite ends of the first connecting member 252, one end of the first arc groove 2522 extends to the back side of the first connecting member 252, and the other end of the first arc groove 2522 extends to the front side of the first connecting member 252, and the two first arc rails 2336 are respectively rotatably accommodated in the two first arc grooves 2522. The second side support member 235 and the second connecting member 257 are rotatably connected through the cooperation of the second arc groove and the second arc rail. The second arc groove is provided in one of the second side support member 235 and the second connecting member 257, and the second arc rail is provided in the other of the second side support member 235 and the second connecting member 257. The axis of the second arc groove is parallel to the first rotation axis L1. Specifically, second arc plates 2355 are respectively provided at the opposite ends of the second side support member 235 away from the middle support member 231, and each second arc plate 2355 is provided with a second arc rail 2356, and the two second arc rails 2356 are coaxial, and second arc grooves 2572 are respectively provided at the opposite ends of the second connecting member 257, one end of the second arc groove 2572 extends to the back side of the second connecting member 257, and the other end of the second arc groove 2572 passes through the front side of the second connecting member 257, and the two second arc rails 2356 are respectively rotatably accommodated in the two second arc grooves 2572.

[0047] Please also read Figure 4-Figure 12The first rotation axis L1 between the first rotating mechanism 250 and the base 220 is parallel to the second rotation axis L2 between the first connecting rod 261 and the base 220, and the first connecting rod 261 is slidably connected to the first connecting member 252; the sliding direction of the first connecting rod 261 relative to the first connecting member 252 is perpendicular to the first rotation axis L1; the first rotation axis L1 between the second rotating mechanism 255 and the base 220 is parallel to the second rotation axis L2 between the second connecting rod 265, and the second connecting rod 265 is slidably connected to the second connecting member 257, and the sliding direction of the second connecting rod 265 relative to the second connecting member 257 is perpendicular to the first rotation axis L1. Specifically, the first rotating member 251 and the second rotating member 256 rotate relative to the base 220 around two first rotating axis lines L1, and the two first rotating axis lines L1 are parallel to each other; the first connecting rod 261 and the second connecting rod 265 rotate relative to the base 220 around two second rotating axis lines L2, and the two second rotating axis lines L2 are parallel to each other, and the first rotating axis line L1 is parallel to the second rotating axis line L2. The first rotating member 251 is connected to the base 220 by the matching rotation of the circular arc groove and the circular arc track, and the second rotating member 256 is connected to the base 220 by the matching rotation of the circular arc groove and the circular arc track, and the first rotating axis line L1 between the first rotating member 251 and the base 220 is parallel to the first rotating axis line L1 between the second rotating member 256 and the base 220. Specifically, the first rotating member 251 and the base 220 are connected to each other through the cooperation of the third arc track and the third arc groove, and the axis of the third arc track is colinear with the first rotation axis L1; the third arc track is provided at one of the first rotating member 251 and the base 220, and the third arc groove is provided at the other of the first rotating member 251 and the base 220. The second rotating member 256 and the base 220 are connected to each other through the cooperation of the fourth arc track and the fourth arc groove, and the axis of the fourth arc track is colinear with the other first rotation axis L1; the fourth arc track is provided at one of the second rotating member 256 and the base 220, and the fourth arc groove is provided at the other of the second rotating member 256 and the base 220. In this embodiment, a third circular arc rail 2510 is provided at one end of the first rotating member 251 away from the first connecting member 252, a third circular arc groove 2211 is provided on one side of the base 220, and the third circular arc rail 2510 can be rotatably accommodated in the third circular arc groove 2211; a fourth circular arc rail 2560 is provided at one end of the second rotating member 256 away from the second connecting member 257, a fourth circular arc groove 2213 is provided on the other opposite side of the base 220, and the fourth circular arc rail 2560 can be rotatably accommodated in the fourth circular arc groove 2213.The first rotating member 251 and the first connecting member 252 are rotationally connected via the first rotating shaft 253, and the third rotating axis centerline L3 between the first rotating member 251 and the first connecting member 252 is collinear with the axis of the first rotating shaft 253; the second rotating member 256 and the second connecting member 257 are rotationally connected via the second rotating shaft 254, and the third rotating axis centerline L3 between the second rotating member 256 and the second connecting member 257 is collinear with the axis of the second rotating shaft 254.

[0048] The first rotating member 251 includes a first rotating portion 2511 and a first connecting portion 2512 disposed at opposite ends thereof, a third circular arc track 2510 disposed at the end of the first rotating portion 2511, and one end of the first connecting portion 2512 away from the first rotating portion 2511 is rotatably connected to the first connecting member 252. In this embodiment, the third circular arc tracks 2510 are respectively disposed at opposite ends of the first rotating portion 2511, and the two third circular arc tracks 2510 are coaxial. Optionally, the first rotating portion 2511 is a first semi-cylinder, the first connecting portion 2512 is a first connecting piece connected to the peripheral wall of the first semi-cylinder, and the third circular arc tracks 2510 are respectively disposed at opposite ends of the first semi-cylinder along its axial direction. Further, the axis of the third circular arc track 2510 is colinear with the axis of the first semi-cylinder. Two first lugs spaced apart from each other are provided on one side of the first connecting portion 2512 away from the first rotating portion 2511, and a first sleeve 2514 is provided on one end of each first lug away from the first rotating portion 2511. The first sleeve 2514 is provided with a first shaft hole 2515 along its axial direction, and the two first sleeves 2514 are coaxial. A first adjustment shaft 2526 is provided on one side of the first connecting member 252, and the axis of the first adjustment shaft 2526 is parallel to the first rotation axis L1. The second rotating member 256 includes a second rotating portion 2561 and a second connecting portion 2562 provided at opposite ends thereof, a fourth circular arc track 2560 is provided at the end of the second rotating portion 2561, and one end of the second connecting portion 2562 away from the second rotating portion 2561 is rotatably connected to the second connecting member 257. In this embodiment, fourth circular arc tracks 2560 are provided at opposite ends of the second rotating portion 2561, respectively, and the two fourth circular arc tracks 2560 are coaxial. Optionally, the second rotating part 2561 is a second semi-cylinder, the second connecting part 2562 is a second connecting piece connected to the peripheral wall of the second semi-cylinder, and the second semi-cylinder is provided with a fourth arc track 2560 at two opposite ends along its axial direction. Further, the axis of the fourth arc track 2560 is colinear with the axis of the second semi-cylinder. Further, the outer peripheral surface of the fourth arc track 2560 is coplanar with the outer peripheral surface of the second semi-cylinder. The second connecting part 2562 is provided with two second lugs spaced apart from each other on one side away from the second rotating part 2561, and each second lug is provided with a second sleeve 2564 at one end away from the second rotating part 2561, and the second sleeve 2564 is provided with a second shaft hole 2565 along its axial direction, and the two second sleeves 2564 are coaxial. A second adjusting shaft 2576 is provided on one side of the second connecting member 257, and the axis of the second adjusting shaft 2576 is parallel to the first rotation axis L1.

[0049] Specifically, the first connecting member 252 is in a strip shape, and the first arc grooves 2522 are respectively provided at the opposite ends of the first connecting member 252 on the side away from the first rotating member 251. The first connecting member 252 includes a first adapter portion 2521 and a first guide slide portion 2523 provided at the opposite ends thereof; one of the first arc grooves 2522 is provided at one end of the first adapter portion 2521 away from the first guide slide portion 2523, and the other first arc groove 2522 is provided at one end of the first guide slide portion 2523 away from the first connecting portion 2521, and the first connecting portion 2512 is rotatably connected to the first adapter portion 2521. The first connecting rod 261 is provided with a first slide rail 2610 at one end away from the base 220, and the first connecting member 252 is provided with a first slide groove 2520. Specifically, the first slide groove 2520 is provided on the first guide slide portion 2523, and the first slide rail 2610 of the first connecting rod 261 is slidably inserted into the first slide groove 2520. Two first avoidance openings 2521a are provided at intervals on the front side of the first adapter part 2521, and a first connecting hole 2521b is provided on the first adapter part 2521 along the length direction of the first connecting member 252, and the first connecting hole 2521b connects the two first avoidance openings 2521a; the two first avoidance openings 2521a are used to respectively accommodate two first sleeves 2514; when the two first sleeves 2514 are rotatably accommodated in the two first avoidance openings 2521a, the first axial hole 2515 is coaxial with the first connecting hole 2521b. A first guide groove 2523a is provided on the front side of the first guide sliding portion 2523, and the opposite ends of the first guide groove 2523a respectively penetrate the opposite sides of the first guide sliding portion 2523, and the end of the first connecting rod 261 away from the base 220 is slidably accommodated in the first guide groove 2523a; first slide grooves 2520 are respectively provided on the opposite two inner side surfaces of the first guide groove 2523a, and the first slide groove 2520 penetrates the opposite sides of the first guide sliding portion 2523 along a direction perpendicular to the first rotation axis L1.

[0050] The second connecting member 257 is in a strip shape, and the second connecting member 257 is provided with a second arc groove 2572 at two opposite ends of the second connecting member 257 on one side away from the second rotating member 256. The second connecting member 257 includes a second adapter 2571 and a second guide slide 2573 provided at two opposite ends thereof, wherein one second arc groove 2572 is provided at one end of the second adapter 2571 away from the second guide slide 2573, and another second arc groove 2572 is provided at one end of the second guide slide 2573 away from the second connecting member 2571, and the second connecting member 2562 is rotatably connected to the second adapter 2571; the second connecting rod 265 is provided with a second slide rail 2650 at one end away from the base 220, and the second connecting member 257 is provided with a second slide groove 2570, specifically, the second slide groove 2570 is provided at the second guide slide 2573, and the second slide rail 2650 of the second connecting rod 265 is slidably inserted in the second slide groove 2570. Two second avoidance openings 2571a are provided at intervals on the front side of the second adapter part 2571, and a second connecting hole 2571b is provided on the second adapter part 2571 along the length direction of the second connecting member 257, and the second connecting hole 2571b connects the two second avoidance openings 2571a; the two second avoidance openings 2571a are used to respectively accommodate two second sleeves 2564; when the two second sleeves 2564 are rotatably accommodated in the two second avoidance openings 2571a, the second axial hole 2565 is coaxial with the second connecting hole 2571b. A second guide groove 2573a is provided on the front side of the second guide slide portion 2573, and the opposite ends of the second guide groove 2573a respectively pass through the opposite sides of the second guide slide portion 2573, and the end of the second connecting rod 265 away from the base 220 can be slidably accommodated in the second guide groove 2573a; second slide grooves 2570 are respectively provided on the two opposite inner side surfaces of the second guide groove 2573a, and the second slide groove 2570 passes through the opposite sides of the second guide slide portion 2573 along a direction perpendicular to the first rotation axis L1.

[0051] The base 220 is an elongated body, and includes a first mounting portion 221 and a second mounting portion 223 located at opposite ends thereof, and a third mounting portion 225 located between the first mounting portion 221 and the second mounting portion 223. The first mounting portion 221 is used to mount the first rotating member 251 and the second rotating member 256, and the second mounting portion 223 is used to mount the first connecting rod 261, the second connecting rod 265 and the linkage assembly 28. The first mounting portion 221 has a third circular arc groove 2211 and a fourth circular arc groove 2213 respectively disposed on opposite sides of the front surface. The axis of the third circular arc groove 2211 is spaced parallel to the axis of the fourth circular arc groove 2213. The third circular arc track 2510 of the first rotating member 251 is rotatably accommodated in the third circular arc groove 2211, and the fourth circular arc track 2560 of the second rotating member 256 is rotatably accommodated in the fourth circular arc groove 2213. Specifically, the first protrusion 2212 and the second protrusion 2214 are respectively provided on opposite sides of the front end of the first mounting portion 221 away from the third mounting portion 225, the third arc groove 2211 is provided on the surface of the first protrusion 2212 facing the third mounting portion 225, and the fourth arc groove 2213 is provided on the surface of the second protrusion 2214 facing the third mounting portion 225. The first rotation-assisting groove 2215 and the second rotation-assisting groove 2216 are respectively provided on opposite sides of the front end of the first mounting portion 221, specifically, the inner surfaces of the first rotation-assisting groove 2215 and the second rotation-assisting groove 2216 are provided with arc surfaces, the axis of the first rotation-assisting groove 2215 is collinear with the axis of the third arc groove 2211, and the axis of the second rotation-assisting groove 2216 is collinear with the axis of the fourth arc groove 2213.

[0052] Optionally, the base 220 includes an anti-slip portion, and the opposite sides of the anti-slip portion extend out of the opposite sides of the base 220 to form an anti-slip sheet, and a pair of connecting shafts 226 are respectively passed through the two anti-slip sheets; specifically, the second mounting portion 223 includes a support bar 2231 connected to the end of the third mounting portion 225 away from the first mounting portion 221, a first anti-slip portion 2233 arranged on the support bar 2231 close to the third mounting portion 225, and a second anti-slip portion 2235 arranged on the support bar 2231 away from the third mounting portion 225, and the first anti-slip portion 2233 and the second anti-slip portion 2235 are spaced apart from each other; optionally, one end of the support bar 2231 is connected to the middle part of the first anti-slip portion 2233, and the opposite ends of the first anti-slip portion 2233 extend out of the opposite sides of the support bar 2231 to form a first anti-slip sheet, and each first anti-slip sheet is provided with a first connecting hole 2234. The other end of the support bar 2231 is connected to the middle of the second anti-slip part 2235, and the opposite ends of the second anti-slip part 2235 extend out of the opposite sides of the support bar 2231 to form a second anti-slip sheet, and the second anti-slip sheet is provided with a second connection hole 2236; the third mounting part 225 includes a connecting bar 2251 connected between the first mounting part 221 and the second mounting part 223, two supporting sheets 2253 connected to the first mounting part 221, and guide rails 2255 provided on opposite sides of the connecting bar 2251; the two supporting sheets 2253 are respectively provided on opposite sides of the connecting bar 2251, and the front side of the supporting sheet 2253 is an arc surface. The two guide rails 2255 are located at one end close to the second mounting part 223.

[0053] The rotating shaft device 22 further includes a positioning member 24, the positioning member 24 is connected to a pair of connecting shafts 226, the positioning member 24 is connected to the third mounting portion 225 of the base 220, and the positioning member 24 and the base 220 jointly position the first rotating member 251 and the second rotating member 256. The first rotating member 251 and the positioning member 24 are connected to each other by the cooperation of the circular arc groove and the circular arc track, and the second rotating member 256 and the positioning member 24 are connected to each other by the cooperation of the circular arc groove and the circular arc track. The first rotating axis L1 between the first rotating member 251 and the positioning member 24, the first rotating axis L1 between the second rotating member 256 and the positioning member 24, and the axis of the connecting shaft 226 are parallel to each other. Specifically, the positioning member 24 includes positioning portions 242 located at opposite ends thereof, and a connecting portion 245 connected between the two positioning portions 242. A fifth circular arc groove 2421 is respectively provided on the same side of the two positioning portions 242. The axes of the two fifth circular arc grooves 2421 are parallel. The third circular arc track 2510 of the first rotating member 251 and the fourth circular arc track 2560 of the second rotating member 256 are respectively rotatably accommodated in the two fifth circular arc grooves 2421. Optionally, the back surface of the positioning portion 242 is set as a circular arc surface that matches the front surface of the support sheet 2253, so that the positioning member 24 can slide on the support sheet 2253 along the axis direction of the fifth circular arc groove 2421. The positioning member 24 and the base 220 are slidably connected through the cooperation of a guide slider and a guide slide groove. The guide slider is provided at one of the positioning member 24 and the base 220, and the guide slide groove is provided at the other of the positioning member 24 and the base 220. In this embodiment, a guide rail 2255 is provided on the side of the connecting strip 2251 of the third mounting portion 225, and a slide groove 246 is provided on the back of the positioning member 24. The guide rail 2255 is slidably accommodated in the slide groove 246, so that the positioning member 24 can move along the length direction of the base 220. Optionally, a guide groove 2452 is provided on the back of the connecting portion 245 along the axis direction of the fifth arc groove 2421, and the opposite ends of the guide groove 2452 respectively penetrate the opposite sides of the positioning member 24, and the connecting strip 2251 is slidably inserted in the guide groove 2452; the opposite sides of the guide groove 2452 are respectively provided with slide grooves 246, and the slide grooves 246 extend along the axis direction of the fifth arc groove 2421, and the opposite ends of the slide groove 246 respectively penetrate the opposite sides of the positioning member 24, and the two guide rails 2255 of the third mounting portion 225 are slidably accommodated in the two slide grooves 246 of the positioning member 24. Insertion holes 2424 are formed on the sides of the two positioning portions 242 facing away from the fifth arc groove 2421 , and the axes of the two insertion holes 2424 are parallel.

[0054] In other embodiments, the two positioning parts 242 are provided with arc tracks on the sides facing the first rotating member 251, and the first rotating part 2511 of the first rotating member 251 and the second rotating part 2561 of the second rotating member 256 are provided with arc grooves on the sides facing the positioning member 24, and the two arc tracks are rotatably accommodated in the two arc grooves. The connecting shaft 226 includes a shaft body 2261 and a cap body 2263 provided at one end of the shaft body 2261, the diameter of the shaft body 2261 is smaller than the diameter of the cap body 2263, and the outer peripheral surface of the shaft body 2261 is provided with a clamping groove 2265 at one end away from the cap body 2263, and the clamping groove 2265 is arranged in a circle along the circumference of the shaft body 2261.

[0055] Please also read Figure 6-Figure 15 The linkage assembly 28 is connected to a pair of connecting shafts 226 and can slide relative to the base 220 along the axial direction of the connecting shafts 226. The first connecting rod 261 and the second connecting rod 265 are respectively connected to the linkage assembly 28 through a double helical surface. When the first connecting rod 261 and / or the second connecting rod 265 rotate around the corresponding connecting shaft 226, the linkage assembly 28 slides along the axial direction of the connecting shaft 226 in the first direction or the second direction to drive the first connecting rod 261 and the second connecting rod 265 to rotate synchronously in the opposite direction relative to the base 220 to achieve mutual folding or mutual flattening. The first direction is opposite to the second direction, and the first direction and the second direction are both parallel to the second rotation axis L2.

[0056] Specifically, the first link member 261 further includes a first rotating portion 2611 rotatably connected to one of the connecting shafts 226, a first sliding portion 2613, and a first connecting portion 2615 connected between the first rotating portion 2611 and the first sliding portion 2613, and a first slide rail 2610 is disposed on the side of the first sliding portion 2613. Specifically, the first rotating portion 2611 is a first rotating cylinder, and the first rotating cylinder is provided with a first rotating hole 2612 along its axial direction, and the connecting shaft 226 is inserted into the first rotating hole 2612 of the first rotating portion 2611; the first sliding portion 2613 is a rectangular plate, and the first slide rails 2610 are respectively disposed on opposite sides of the rectangular plate, and the first slide rails 2610 are perpendicular to the axis of the first rotating cylinder. First cams 2616 are respectively disposed on opposite ends of the first rotating portion 2611, and the first rotating portion 2611 and the first cam 2616 are coaxial. The first cam 2616 includes a concave-convex surface provided at the end of the first rotating cylinder, the concave-convex surface includes a first protruding portion 2616a and a first concave portion 2616b, and the first protruding portion 2616a and the first concave portion 2616b are sequentially arranged at intervals along the circumference of the first rotating portion; the number of the first protruding portions 2616a and the number of the first concave portions 2616b can be set as needed, such as the first cam 2616 can include one first protruding portion 2616a and one first concave portion 2616b, two first protruding portions 2616a and two first concave portions 2616b, three first protruding portions 2616a and three first concave portions 2616b, or four first protruding portions 2616a and four first concave portions 2616b. In this embodiment, the first cam 2616 includes three first protruding portions 2616a and three first concave portions 2616b that are spaced apart along the circumference of the first rotating portion. The first rotating portion 2611 of the first connecting rod 261 is provided with a first receiving groove 2617 . Specifically, the outer peripheral wall of the first rotating portion is provided with the first receiving groove 2617 . One side of the linkage assembly 28 is passed through one of the connecting shafts 226 and received in the first receiving groove 2617 .

[0057] The second connecting rod 265 further comprises a second rotating part 2651 rotatably connected to another connecting shaft 226, a second sliding part 2653, and a second connecting part 2655 connected between the second rotating part 2651 and the second sliding part 2653, and a second slide rail 2650 is arranged on the side of the second sliding part 2653. Specifically, the second rotating part 2651 is a second rotating cylinder, and the second rotating cylinder is provided with a second rotating hole 2652 along its axial direction, and the connecting shaft 226 can be inserted into the second rotating hole 2652 of the second rotating part, and the second sliding part 2653 is a rectangular plate, and the second slide rails 2650 are respectively arranged on opposite sides of the rectangular plate, and the second slide rails 2650 are perpendicular to the axis of the second rotating cylinder. A second cam 2656 is arranged at one end of the second rotating part 2651, and the second rotating part 2651 and the second cam 2656 are coaxial. The second cam 2656 includes a concave-convex surface provided at the end of the second rotating part, the concave-convex surface includes a second protruding part 2656a and a second recessed part 2656b, and the second protruding part 2656a and the second recessed part 2656b are sequentially arranged at intervals along the circumference of the second rotating cylinder; the number of the second protruding parts 2656a and the number of the second recessed parts 2656b can be set as needed, such as the second cam 2656 can include one second protruding part 2656a and one second recessed part 2656b, two second protruding parts 2656a and two second recessed parts 2656b, three second protruding parts 2656a and three second recessed parts 2656b, or four second protruding parts 2656a and four second recessed parts 2656b. In this embodiment, the second cam 2656 includes three second protruding parts 2656a and three second recessed parts 2656b arranged at intervals along the circumference of the second rotating part. The second rotating portion 2651 of the second connecting rod 265 is provided with a second receiving groove 2657 . Specifically, the outer peripheral wall of the second rotating portion 2651 is provided with a second receiving groove 2657 . The other side of the linkage assembly 28 is penetrated by another connecting shaft 226 and received in the first receiving groove 2617 .

[0058] like Figure 6-Figure 16As shown, the first linkage 281 includes a first sliding portion 2811, which is slidably connected to the connecting shaft 226 along the axial direction of the connecting shaft 226, and the second linkage 283 includes a second sliding portion 2831, which is slidably connected to the connecting shaft 226 along the axial direction of the connecting shaft 226; the first sliding portion 2811 is connected to the first rotating portion 2611 and / or the second rotating portion 2651 through a double helical surface, and the second sliding portion 2831 is connected to the first rotating portion 2611 and / or the second rotating portion 2651 through a double helical surface. In this embodiment, the first linkage member 281 also includes a first connecting plate 2816, and the first sliding parts 2811 are respectively provided at the opposite ends of the first connecting plate 2816; the second linkage member 283 also includes a second connecting plate 2836, and the second sliding parts 2831 are respectively provided at the opposite ends of the second connecting plate 2836; the first sliding part 2811 and the second sliding part 2831 on one side of the base 220 are accommodated in the first receiving groove 2617 of the first rotating part 2611, and the first sliding part 2811 and the second sliding part 2831 on the other side of the base 220 are accommodated in the second receiving groove 2657 of the second rotating part 2651; the supporting member 285 is clamped between the first linkage member 281 and the second linkage member 283. The first sliding portion 2811 and the second sliding portion 2831 in the first receiving groove 2617 are respectively connected to the first rotating portion 2611 through a double helical surface, and the first sliding portion 2811 and the second sliding portion 2831 in the second receiving groove 2657 are respectively connected to the second rotating portion 2651 through a double helical surface; that is, one of the first sliding portions 2811 is connected to the first rotating portion 2611 through a double helical surface, and the other first sliding portion 2811 is connected to the second rotating portion 2651 through a double helical surface; one of the second sliding portions 2831 is connected to the first rotating portion 2611 through a double helical surface, and the other second sliding portion 2831 is connected to the second rotating portion 2651 through a double helical surface. Optionally, the first linkage member 281 and / or the second linkage member 283 are slidably connected to the base 220 through the cooperation of a slide groove and a slide rail, and the length direction of the slide rail is parallel to the axial direction of the connecting shaft 226; specifically, a first sliding groove 2817 is provided on the back side of the first connecting plate 2816 along the axial direction of the connecting shaft 226, and the opposite sides of the first sliding groove 2817 respectively penetrate the opposite side surfaces of the first connecting plate 2816; a second sliding groove 2837 is provided on the back side of the second connecting plate 2836 along the axial direction of the connecting shaft 226, and the opposite sides of the second sliding groove 2837 respectively penetrate the opposite side surfaces of the second connecting plate 2836.

[0059] The first receiving groove 2617 is located in the middle of the outer peripheral wall of the first rotating part 2611, and the first receiving groove 2617 extends to the first connecting part 2615 along the radial direction of the first rotating part 2611, and the first receiving groove 2617 is connected with the first rotating hole 2612. The first rotating part 2611 includes a first abutting spiral surface 2617a and a second abutting spiral surface 2617b, and the first abutting spiral surface 2617a and the second abutting spiral surface 2617b have opposite rotation directions, and the first abutting spiral surface 2617a and the second abutting spiral surface 2617b are located on opposite sides of the first rotating hole 2612, and the first abutting spiral surface 2617a and the second abutting spiral surface 2617b rotate less than one circle around the axis of the first rotating part 2611 respectively. In this embodiment, the first rotating portion 2611 is provided with a first abutting spiral surface 2617a and a second abutting spiral surface 2617b at opposite ends of the first receiving groove 2617, and the first abutting spiral surface 2617a and the second abutting spiral surface 2617b are respectively located at opposite sides of the connecting shaft 226. The second receiving groove 2657 is located at the middle of the outer peripheral wall of the second rotating portion 2651, and the second receiving groove 2657 extends along the radial direction of the second rotating portion 2651 to the second connecting portion 2655, and the second receiving groove 2657 is communicated with the second rotating hole 2652. The second rotating portion 2651 includes a third abutting spiral surface 2657a and a fourth abutting spiral surface 2657b, the third abutting spiral surface 2657a and the fourth abutting spiral surface 2657b have opposite rotation directions, are located at opposite sides of the second rotating hole 2652, and the third abutting spiral surface 2657a and the fourth abutting spiral surface 2657b rotate less than one circle around the axis of the second rotating portion 2651. In this embodiment, the second rotating portion 2651 is provided with a third abutting spiral surface 2657a and a fourth abutting spiral surface 2657b at opposite ends of the second receiving groove 2657, and the third abutting spiral surface 2657a and the fourth abutting spiral surface 2657b are located at opposite sides of the connecting shaft 226. One end of the first sliding portion 2811 facing away from the supporting member 285 is provided with a first helical surface 2812 and a second helical surface 2814, the first helical surface 2812 and the second helical surface 2814 have opposite rotation directions, and the axis of the first helical surface 2812 is collinear with the axis of the second helical surface 2814; the other end of the first sliding portion 2811 facing away from the supporting member 285 is provided with a third helical surface 2813 and a fourth helical surface 2815, the third helical surface 2813 and the fourth helical surface 2815 have opposite rotation directions, and the axis of the third helical surface 2813 and the axis of the fourth helical surface 2815 are collinear.One end of the second sliding portion 2831 facing away from the abutting member 285 is provided with a first helical surface 2812 and a second helical surface 2814, and the first helical surface 2812 and the second helical surface 2814 have opposite rotation directions; the other end of the second sliding portion 2831 facing away from the abutting member 285 is provided with a third helical surface 2813 and a fourth helical surface 2815, and the third helical surface 2813 and the fourth helical surface 2815 have opposite rotation directions. That is, the first sliding portion 2811 and the second sliding portion 2831 in the first receiving groove 2617 both include a first helical surface 2812 and a second helical surface 2814, the first helical surface 2812 is slidably fitted with the corresponding first abutting helical surface 2617a, the second helical surface 2814 is slidably fitted with the corresponding second abutting helical surface 2617b, and the first rotating cylinder, the first helical surface 2812, the second helical surface 2814, the first abutting helical surface 2617a and the second abutting helical surface 2617b are coaxial; The first sliding portion 2811 and the second sliding portion 2831 in the second receiving groove 2657 both include a third helical surface 2813 and a fourth helical surface 2815. The third helical surface 2813 is slidably fitted with the corresponding third abutting helical surface 2657a, and the fourth helical surface 2815 is slidably fitted with the corresponding fourth abutting helical surface 2657b. The second rotating portion 2651, the third helical surface 2813, the fourth helical surface 2815, the third abutting helical surface 2657a and the fourth abutting helical surface 2657b are coaxial.

[0060] The first link member 261 and the second link member 265 can respectively rotate around the corresponding connecting shaft 226, but the first link member 261 and the second link member 265 cannot move along the axial direction of the connecting shaft 226. The linkage assembly 28 can only move along the axial direction of the connecting shaft 226 but cannot rotate around the connecting shaft 226. When the first link member 261 rotates around the connecting shaft 226, the first abutting spiral surface 2617a and the second abutting spiral surface 2617b respectively push the first spiral surface 2812 and the second spiral surface 2814 in a sliding manner, so that the first linkage member 281, the second linkage member 283 and the abutting member 285 slide along the axial direction of the connecting shaft 226. At the same time, the third spiral surface 2813 and the fourth spiral surface 2815 of the linkage assembly 28 respectively push the third abutting spiral surface 2657a and the fourth abutting spiral surface 2657b in a sliding manner. Since the first link member 261 and the second link member 265 cannot move along the axial direction of the connecting shaft 226, the first link member 261 and the second link member 265 can be folded or unfolded by the axial sliding of the linkage assembly 28 along the connecting shaft 226. When the second connecting rod 265 rotates around the connecting shaft 226, the third abutting spiral surface 2657a and the fourth abutting spiral surface 2657b respectively push the third spiral surface 2813 and the fourth spiral surface 2815 in a sliding manner, so that the first linkage member 281, the second linkage member 283 and the abutting member 285 slide along the axial direction of the connecting shaft 226. At the same time, the first spiral surface 2812 and the second spiral surface 2814 of the linkage assembly 28 respectively push the first abutting spiral surface 2617a and the second abutting spiral surface 2617b in a sliding manner. Since the first connecting rod 261 and the second connecting rod 265 cannot move along the axial direction of the connecting shaft 226, the first connecting rod 261 and the second connecting rod 265 can be synchronously rotated in the opposite direction and folded or unfolded through the axial sliding of the linkage assembly 28 along the connecting shaft 226.

[0061] Optionally, the first rotating portion 2611 is provided with a first anti-slip groove 2618 corresponding to one of the anti-slip sheets, and the second rotating portion 2651 is provided with a second anti-slip groove 2658 corresponding to the other anti-slip sheet, wherein one anti-slip sheet is accommodated in the first anti-slip groove 2618, and the other anti-slip sheet is accommodated in the second anti-slip groove 2658. In this embodiment, the first anti-slip grooves 2618 are respectively provided at opposite ends of the outer peripheral wall of the first rotating portion 2611, and the first receiving groove 2617 is located between the two first anti-slip grooves 2618; the second anti-slip grooves 2658 are respectively provided at opposite ends of the outer peripheral wall of the second rotating portion 2651, and the second receiving groove 2657 is located between the two second anti-slip grooves 2658. The first anti-slip plate of the first anti-slip part 2233 and the second anti-slip plate of the second anti-slip part 2235 on one side of the base 220 can be respectively inserted into the two first anti-slip grooves 2618 of the first rotating part 2611, and the first anti-slip plate of the first anti-slip part 2233 and the second anti-slip plate of the second anti-slip part 2235 on the other side of the base 220 can be respectively inserted into the two second anti-slip grooves 2658 of the second rotating part 2651.

[0062] The abutting member 285 includes an abutting top portion 2852 connected to the connecting shaft 226, and opposite sides of the abutting top portion 2852 respectively abut against the first sliding portion 2811 and the second sliding portion 2831, so that the two first sliding portions 2811 of the first linkage member 281 respectively abut against the first connecting rod member 261 and the second connecting rod member 265, and the two second sliding portions 2831 of the second linkage member 283 respectively abut against the first connecting rod member 261 and the second connecting rod member 265; so that the first helical surface 2812 rotatably abuts against the first abutting helical surface 2617a, the second helical surface 2814 rotatably abuts against the second abutting helical surface 2617b, the third helical surface 2813 rotatably abuts against the third abutting helical surface 2657a, and the fourth helical surface 2815 rotatably abuts against the fourth abutting helical surface 2657b.

[0063] Optionally, the abutment top portion 2852 is provided with a slot 2853, and the connecting shaft 226 can be accommodated in the slot 2853. In this embodiment, the abutment top portion 2853 is a C-shaped snap ring, and the inner cavity of the C-shaped snap ring is the slot 2853. In other embodiments, the abutment top portion 2853 can also be, but not limited to, a V-shaped snap ring, a trapezoidal snap ring, a semicircular snap ring, etc., and the inner cavity of the V-shaped snap ring, the inner cavity of the trapezoidal snap ring, and the inner cavity of the semicircular snap ring are all the slot.

[0064] Optionally, the abutting member 285 further includes a connecting rod 2854, and the two opposite ends of the connecting rod 2854 are respectively provided with abutting tops 2852, one side of the connecting rod 2854 abuts against the first linkage member 281, and the other side of the connecting rod 2854 abuts against the second linkage member 283; specifically, one side of the connecting rod 2854 abuts against the first connecting plate 2816, and the other side of the connecting rod 2854 abuts against the second connecting plate 2836. In some embodiments, the connecting rod 2854 of the abutting member 285 can be omitted, and only the abutting top 2852 is retained. In some embodiments, the abutting top 2852 of the abutting member 285 can be omitted, and only the connecting rod 2854 is retained. In this embodiment, the abutting member 285 is made of a hard material, and the hard material can be but is not limited to hard metal or hard plastic.

[0065] like Figure 9-12 and Figure 14-15As shown, the rotating shaft device 22 also includes a damping mechanism 29, which includes a first abutting member 291, a first elastic member 294, a second abutting member 295 and a second elastic member 298. The first abutting member 291 is connected to a pair of connecting shafts 226 in an axially sliding manner along the connecting shaft 226. The first abutting member 291 and the first connecting rod member 261 and / or the second connecting rod member 265 are matched by a cam. Specifically, the first abutting member 291 and the first rotating portion 2611 are matched by a cam, and / or the first abutting member 291 and one end of the second rotating portion 2651 are matched by another cam; one end of the first elastic member 294 is used to push the positioning member 24 to abut against the first rotating mechanism 250 and the second rotating mechanism 255, and the other end of the first elastic member 294 is used to push the first abutting member 291 and the first connecting rod member 261 and / or the second connecting rod member 265 to abut against each other. In this embodiment, the first abutting member 291 cooperates with the first link member 261 and the second link member 265 through a cam, and the first elastic member 294 pushes the first abutting member 291 and the first link member 261 and the second link member 265 to abut against each other. When the first link member 261 and / or the second link member 265 rotates around the corresponding connecting shaft 226, there is friction resistance between the first abutting member 291 and the first link member 261 and the second link member 265, and the friction resistance can prevent the first link member 261 and the second link member 265 from rotating around the corresponding connecting shaft 226. Specifically, the first supporting member 291 includes two first supporting cams 2910 sleeved on a pair of connecting shafts 226, wherein one connecting shaft 226 passes through the first cam 2616 of the first connecting rod 261 and one of the first supporting cams 2910 of the first supporting member 291, and the other connecting shaft 226 passes through the second cam 2656 of the second connecting rod 265 and the other first supporting member 2910, and the two first supporting cams 2910 are rotatably supported by the first cam 2616 of the first connecting rod 261 and the second cam 2656 of the second connecting rod 265. Optionally, the first abutting member 291 includes two first abutting cylinders 292 located at opposite ends thereof, the two first abutting cylinders 292 are respectively slidably sleeved on a pair of connecting shafts 226, the first rotating portion 2611 is rotatably sleeved on one of the connecting shafts 226, the first rotating portion 2611 and one of the first abutting cylinders 292 are engaged through a cam, the second rotating portion 2651 is rotatably sleeved on the other connecting shaft 226, the second rotating portion 2651 and the other first abutting cylinder 292 are engaged through a cam. The first abutting member 291 also includes a first connecting portion 293 connected between the two first abutting cylinders 292, the axes of the two first abutting cylinders 292 are spaced and parallel, and the two first abutting cylinders 292 can be respectively slidably sleeved on a pair of connecting shafts 226.

[0066] A first abutting cam 2910 is provided at one end of each first abutting cylinder 292 facing the first link member 261, that is, the first abutting cam 2910 is provided at the end of the first abutting cylinder 292 away from the first elastic member 294. Each first abutting cam 2910 includes a concave-convex surface provided at one end of the first abutting cylinder 292, the concave-convex surface includes a third protruding portion 2911 and a third concave portion 2913, and the third protruding portion 2911 and the third concave portion 2913 are sequentially spaced along the circumferential direction of the first abutting cylinder 292. The number of the third protrusions 2911 and the number of the third recesses 2913 can be set as needed, such as the first abutting cam 2910 can include one third protrusion 2911 and one third recess 2913, two third protrusions 2911 and two third recesses 2913, three third protrusions 2911 and three third recesses 2913, or four third protrusions 2911 and four third recesses 2913. In this embodiment, the first abutting cam 2910 includes three third protrusions 2911 and three third recesses 2913 arranged at intervals along the circumference of the first abutting cylinder 292. The axis of one of the first abutting cams 2910 is collinear with the axis of the corresponding first abutting cylinder 292, and the axis of the other first abutting cam 2910 is collinear with the axis of the corresponding first abutting cylinder 292. Preferably, the opposite end surfaces of the first abutting member 291 form arc surfaces to facilitate the folding or unfolding of the rotating shaft device 22.

[0067] In some embodiments, one of the first abutting cams 2910 on the two first abutting cylinders 292 can be omitted, and the first cam 2616 at one end of the first connecting rod 261 or the second cam 2656 at one end of the second connecting rod 265 can be omitted.

[0068] The second abutting member 295 is connected to a pair of connecting shafts 226 in a sliding manner along the axial direction of the connecting shaft 226. The second abutting member 295 is matched with the first connecting rod 261 and / or the second connecting rod 265 by a cam. Specifically, the second abutting member 295 is matched with the first rotating part 2611 by a cam, and / or the second abutting member 295 is matched with the second rotating part 2651 by another cam. The second elastic member 298 is used to push the second abutting member 295 and the first connecting rod 261 and / or the second connecting rod 265 against each other. In this embodiment, the second abutting member 295 and the first connecting rod 261 and the second connecting rod 265 are matched with the cam, and the second elastic member 298 pushes the second abutting member 295 and the first connecting rod 261 and the second connecting rod 265 against each other. When the first link member 261 and / or the second link member 265 rotates around the corresponding connecting shaft 226, there is friction resistance between the second abutting member 295 and the first link member 261 and the second link member 265, and the friction resistance can hinder the first link member 261 and the second link member 265 from rotating around the corresponding connecting shaft 226. Specifically, the second abutting member 295 includes two second abutting cams 2950 sleeved on a pair of connecting shafts 226, wherein one connecting shaft 226 penetrates the first cam 2616 of the first link member 261 and one of the second abutting cams 2950 of the second abutting member 295, and the other connecting shaft 226 penetrates the second cam 2656 of the second link member 265 and the other second abutting cam 2950 of the second abutting member 295, and the two second abutting cams 2950 respectively rotatably abut against the first cam 2616 of the first link member 261 and the second cam 2656 of the second link member 265. Optionally, the second abutting member 295 includes two second abutting tubes 296 located at opposite ends thereof, the two second abutting tubes 296 are respectively slidably mounted on a pair of connecting shafts 226, the first rotating portion 2611 is rotatably mounted on one of the connecting shafts 226, the first rotating portion 2611 and one of the second abutting tubes 296 are engaged through a cam, the second rotating portion 2651 is rotatably mounted on the other connecting shaft 226, the second rotating portion 2651 and the other second abutting tube 296 are engaged through a cam. The second abutting member 295 also includes a second connecting portion 297 connected between the two second abutting tubes 296, the axes of the two second abutting tubes 296 are spaced and parallel, and the two second abutting tubes 296 can be respectively slidably mounted on the pair of connecting shafts 226.

[0069] A second abutting cam 2950 is provided at one end of each second abutting cylinder 296 facing the first link member 261, that is, the second abutting cam 2950 is provided at the end of the second abutting cylinder 296 away from the second elastic member 298. Each second abutting cam 2950 includes a concave-convex surface provided at one end of the second abutting cylinder 296, the concave-convex surface includes a fourth protruding portion 2951 and a fourth concave portion 2953, and the fourth protruding portion 2951 and the fourth concave portion 2953 are sequentially spaced along the circumferential direction of the second abutting cylinder 296. The number of the fourth protrusions 2951 and the number of the fourth recesses 2953 can be set as needed, such as the second abutting cam 2950 can include one fourth protrusion 2951 and one fourth recess 2953, two fourth protrusions 2951 and two fourth recesses 2953, three fourth protrusions 2951 and three fourth recesses 2953, or four fourth protrusions 2951 and four fourth recesses 2953. In this embodiment, the second abutting cam 2950 includes three fourth protrusions 2951 and three fourth recesses 2953 arranged at intervals along the circumference of the second abutting cylinder 296. The axis of one of the second abutting cams 2950 is collinear with the axis of the corresponding second abutting cylinder 296, and the axis of the other second abutting cam 2950 is collinear with the axis of the corresponding second abutting cylinder 296. Preferably, the opposite end surfaces of the second abutting member 295 form arc surfaces to facilitate the folding or unfolding of the rotating shaft device 22.

[0070] In some embodiments, one of the second abutting cams 2950 on the two second abutting cylinders 296 can be omitted, and the first cam 2616 at one end of the first connecting rod 261 or the second cam 2656 at one end of the second connecting rod 265 can be omitted.

[0071] Optionally, the rotation-assisting mechanism further includes a clamping pad 271 and a connecting pad 273. The clamping pad 271 includes two clamping pieces 2711 spaced apart from each other and a first connecting piece 2713 connected between the two clamping pieces 2711. The clamping piece 2711 may be a U-shaped clamping piece. The connecting pad 273 includes two spaced-apart gaskets 2731 and a second connecting piece 2733 connected between the two gaskets 2731. Each gasket 2731 is provided with a through hole 2735.

[0072] Please also read Figure 3-Figure 21When assembling the rotating shaft device 22, the first sleeve 2514 of the first rotating member 251 is accommodated in the first avoiding opening 2521a of the first connecting member 252, so that the first shaft hole 2515 is opposite to the first connecting hole 2521b, and one of the first rotating shafts 253 is inserted into the first shaft hole 2515 and the second connecting hole 2521b, so that the first rotating member 251 is rotatably connected to the first connecting member 252; the second sleeve 2564 of the second rotating member 256 is accommodated in the second avoiding opening 2571a of the second connecting member 257, so that the second shaft hole 2565 is opposite to the second connecting hole 2571b, and the other first rotating shaft 253 is inserted into the second shaft hole 2565 and the second connecting hole 2571b, so that the second rotating member 256 is rotatably connected to the second connecting member 257. The first rotating part 2511 is placed in the first rotation-assisting groove 2215 of the base 220, so that the third arc track 2510 at one end of the first rotating part 2511 can be rotatably accommodated in the third arc track 2211; the second rotating part 2561 is placed in the second rotation-assisting groove 2216 of the base 220, so that the fourth arc track 2560 of the second rotating part 2561 can be rotatably accommodated in the fourth arc track 2213; the two positioning parts 242 of the positioning member 24 are respectively placed in the two supporting grooves 2216 and the second supporting grooves 2216. The support piece 2253 allows the connecting strip 2251 to be slidably accommodated in the guide groove 2452 of the positioning member 24, and the two guide rails 2255 can be slidably accommodated in the two slide grooves 246 of the positioning member 24 respectively, and the third arc track 2510 of the first rotating member 251 away from the first protrusion 2212 and the fourth arc track 2560 of the second rotating member 256 away from the first protrusion 2212 can be rotatably accommodated in the two fifth arc grooves 2421 of the positioning member 24 respectively.The first sliding portion 2811 and the second sliding portion 2831 on one side of the linkage assembly 28 are accommodated in the first receiving groove 2617 of the first link member 261, and the first sliding portion 2811 and the second sliding portion 2831 on the other side of the linkage assembly 28 are accommodated in the second receiving groove 2657 of the second link member 265; the abutting member 285 is inserted between the first linkage member 281 and the second linkage member 283, so that the two abutting top portions 2852 abut against the first linkage member 281 and the second linkage member 283 respectively; the two first abutting cams 2910 of the first abutting member 291 are respectively aligned with one of the first cams 2616 of the first rotating portion 2611 and one of the second rotating portion 2651 The second cam 2656 is matched and connected, and the two second abutting cams 2950 of the second resisting member 295 are respectively matched and connected with the other first cam 2616 of the first rotating part 2611 and the other second cam 2656 of the second rotating part 2651; the linkage assembly 28 is installed on the second mounting part 223 of the base 220, so that the support bar 2231 is accommodated in the first sliding groove 2817 of the first linkage member 281 and the second sliding groove 2837 of the second linkage member 283; one end of one of the connecting shafts 226 with the clamping groove 2265 is inserted into one of the through holes 2735 of the connecting pad 273, one of the inner cavities of the second elastic member 298, and one of the second resisting member 295. The inner cavity of the second abutting cylinder 296, the first rotating hole 2612 of the first rotating part 2611, one of the second connecting holes 2236 of the second anti-slip part 2235, the inner cavity of one of the second sliding parts 2831, the inner cavity of one of the first sliding parts 2811, one of the first connecting holes 2234 of the first anti-slip part 2233, and the inner cavity of one of the first abutting cylinders 292 of the first abutting member 291 are inserted so that the clamping groove 2265 of one of the connecting shafts 226 is exposed to the side of the first abutting member 291 away from the linkage assembly 28; one end of the other connecting shaft 2231 provided with the clamping groove 2265 is inserted into the other through hole 2735 of the connecting pad 273, and the other second elastic member 2 98, the inner cavity of the other second supporting tube 296 of the second supporting member 295, the second rotating hole 2652 of the second rotating portion 2651, the other second connecting hole 2236 of the second anti-slip portion 2235, the inner cavity of the other second sliding portion 2831, the inner cavity of the other first sliding portion 2811, the other first connecting hole 2234 of the first anti-slip portion 2233, and the inner cavity of the other first supporting tube 292 of the first supporting member 291, so that the clamping groove 2265 of the other connecting shaft 226 is exposed to the side of the first supporting member 291 away from the linkage assembly 28; the two clamping plates 2711 of the clamping pad 271 are respectively clamped into the clamping grooves 2265 of the two connecting shafts 226.In this embodiment, after the two connecting shafts 2231 are installed to the auxiliary rotation mechanism, the abutting piece 285 is inserted between the first linkage piece 281 and the second linkage piece 283, and the opposite ends of the abutting piece 285 respectively abut the first linkage piece 281 and the second linkage piece 283 until the two abutting tops 2852 of the abutting piece 285 are respectively engaged with the two connecting shafts 226, so that the two connecting shafts 226 are respectively engaged in the slots 2853 of the two abutting tops 2852; so that the first helical surface 2812 and the first abutting helical surface 2617a are matched, the second helical surface 2814 and the second abutting helical surface 2617b are matched, the third helical surface 2813 and the third abutting helical surface 2657a are matched, and the fourth helical surface 2815 and the fourth abutting helical surface 2657b are matched closely, thereby reducing the asynchronous influence caused by the matching gap. Optionally, the abutting member 285 is fixed to the first linkage member 281 and / or the second linkage member 283 by welding.

[0073] The two first elastic members 294 are respectively sleeved on the ends of a pair of connecting shafts 226 away from the cap body 2263, so that the opposite ends of the first elastic member 294 respectively abut against the clamping pad 271 and the two positioning parts 242 of the positioning member 24, so that the first elastic member 294 pushes the positioning member 24 against the first rotating member 251 and the second rotating member 256; the first slide rail 2610 of the first connecting rod 261 is slidably inserted into the first slide groove 2520 of the first connecting member 252, and the second slide rail 2650 of the second connecting rod 265 is slidably inserted into the second slide groove 2570 of the second connecting member 257; the middle support member 231 is attached to the front side of the base 220, and the first side support member 233 and the second side support member 234 are connected to the first connecting member 257; The two side support members 235 are respectively placed on the front side of the first rotating mechanism 232 and the front side of the second rotating mechanism 234, so that the first adjustment shaft 2526 of the first connecting member 252 is rotated and slidably inserted into the first adjustment groove 2330 of the first side support member 233, and the first circular arc rail 2336 of the first side support member 233 is rotatably accommodated in the first circular arc groove 2522 of the first connecting member 252; the second adjustment shaft 2576 of the second connecting member 257 is rotated and slidably inserted into the second adjustment groove 2350 of the second side support member 235, and the second circular arc rail 2356 of the second side support member 235 is rotatably accommodated in the second circular arc groove 2572 of the second connecting member 257.

[0074] At this time, one end of the two first elastic members 294 elastically pushes the positioning member 24 to push against the first rotating member 251 and the second rotating member 256, so that the first rotating member 251 and the second rotating member 256 respectively push against the first protrusion 2212 and the second protrusion 2214, and the other end of the two first elastic members 294 elastically pushes the clamping pad 271, so that the two first abutting cams 2910 respectively push against the corresponding first cam 2616 and the second cam 2656; the two second elastic members 298 elastically push against the first cam 2616 and the second cam 2656. Push the second supporting member 295 so that the two second abutting cams 2950 abut against the first cam 2616 and the second cam 2656 respectively; the first helical surface 2812 can be rotatably fitted on the first abutting helical surface 2617a, the second helical surface 2814 can be rotatably fitted on the second abutting helical surface 2617b, the third helical surface 2813 can be rotatably fitted on the third abutting helical surface 2657a, and the fourth helical surface 2815 can be rotatably fitted on the fourth abutting helical surface 2657b. When the first rotating member 251 and the second rotating member 256 rotate relative to the base 220, there is friction resistance between the first rotating member 251 and the base 220 and the positioning member 24, and there is friction resistance between the second rotating member 256 and the base 220 and the positioning member 24. The first anti-slip portion 2233 and the second anti-slip portion 2235 are respectively accommodated in the first anti-slip groove 2618 and the second anti-slip groove 2658, so that the first connecting rod 261 and the second connecting rod 265 can rotate around the two connecting shafts 226 respectively, and cannot move along the axial direction of the connecting shaft 226, and the two first cams 2616 are respectively with the corresponding first abutment convex The friction resistance between the wheel 2910 and the second abutting cam 2950, ​​and the friction resistance between the two second cams 2656 and the corresponding first abutting cam 2910 and the second abutting cam 2950, ​​these friction resistances hinder the first rotating member 251 and the second rotating member 256 from rotating relative to the base 220. At the same time, these friction resistances hinder the first connecting rod 261 and the second connecting rod 265 from rotating relative to the base 220, that is, in the absence of external force, the first rotating member 251, the second rotating member 256, the first connecting rod 261 and the second connecting rod 265 can be limited relative to the base 220.The opposing sides of the abutting member 285 respectively abut the first linking member 281 and the second linking member 283, so that the first helical surface 2812 and the second helical surface 2814 of the first linking member 281 respectively abut against the first abutting helical surface 2617a and the second abutting helical surface 2617b of the first linking member 261 in a rotatable manner, and the third helical surface 2813 and the fourth helical surface 2815 of the first linking member 281 respectively abut against the third abutting helical surface 2617a of the second linking member 265. 657a and the fourth abutting spiral surface 2657b; the first spiral surface 2812 and the second spiral surface 2814 of the second linkage member 283 are rotatably abutted against the first abutting spiral surface 2617a and the second abutting spiral surface 2617b of the first connecting rod member 261, and the third spiral surface 2813 and the fourth spiral surface 2815 of the second linkage member 283 are rotatably abutted against the third abutting spiral surface 2657a and the fourth abutting spiral surface 2657b of the second connecting rod member 265, respectively.

[0075] When the first side support member 233 and the second side support member 235 are in a completely flattened state, the first adjustment shaft 2526 and the second adjustment shaft 2576 are respectively positioned at the first positioning section 2333 of the first side support member 233 and the third positioning section 2353 of the second side support member 235; the first rotating mechanism 250 and the second rotating mechanism 255 are in a completely flattened state, the first connecting rod member 261 and the second connecting rod member 265 are in a completely flattened state, the two first cams 2616 of the first connecting rod member 261 are respectively against the corresponding first abutting cams 2910 and the second abutting cams 2950, ​​and the two second cams 2656 of the second connecting rod member 265 are respectively against The corresponding first abutting cam 2910 and the second abutting cam 2950 limit the first connecting rod 261 and the second connecting rod 265 relative to the base 220, thereby limiting the first connecting rod 261 and the second connecting rod 265 from rotating and bending relative to the base 220 to prevent the linkage assembly 28 from sliding relative to the base 220. At the same time, the first rotating member 251 and the second rotating member 256 are limited relative to the base 220, so that the first side support member 233 and the second side support member 235 maintain a stable and completely flat state, and the front of the first side support member 233, the front of the middle support member 231 and the front of the second side support member 235 are coplanar. When the first side support member 233 and the second side support member 235 are in a fully folded state, the first adjustment shaft 2526 and the second adjustment shaft 2576 are respectively positioned at the second positioning section 2334 of the first side support member 233 and the fourth positioning section 2354 of the second side support member 235; the first rotating mechanism 250 and the second rotating mechanism 255 are in a folded state, the first connecting rod member 261 and the second connecting rod member 265 are in a fully folded state, the two first abutting cams 2910 of the first abutting member 291 respectively abut against the corresponding first cam 2616 and the second cam 2656, and the two second abutting cams 2910 of the second abutting member 295 respectively abut against the corresponding first cam 2616 and the second cam 2656. 950 respectively abuts against the corresponding first cam 2616 and the second cam 2656, so that the first link member 261 and the second link member 265 are limited relative to the base 220, thereby limiting the first link member 261 and the second link member 265 from rotating and flattening relative to the base 220, so as to prevent the linkage assembly 28 from sliding relative to the base 220, so that the first side support member 233 and the second side support member 235 maintain a stable fully folded state, and the front of the first side support member 233, the front of the second side support member 235 and the front of the middle support member 231 form a teardrop-shaped space to facilitate the accommodation of the bendable area 31 of the flexible screen 30.When the first side support member 233 and the second side support member 235 are in the middle state, the first link member 261 and the second link member 265 rotate synchronously relative to the base 220 and bend at a specific angle, the linkage assembly 28 slides along the connecting shaft 226, the first rotating mechanism 250 and the second rotating mechanism 255 rotate synchronously relative to the base 220 and bend at a specific angle, the first abutting member 291 and the second abutting member 295 respectively abut the first link member 261 and the second link member 265, so that the two first abutting cams 2910 are respectively aligned with the corresponding first cams 2910. 616 and the second cam 2656, there is friction resistance between the two second abutting cams 2950 and the corresponding first cam 2616 and second cam 2656, and there is friction resistance between the first rotating member 251 and the second rotating member 256 and the base 220 and the positioning member 24 respectively. In the absence of external force, the first side support member 233 and the second side support member 235 can be maintained in any folding state except the fully flattened state and the fully folded state, so that the electronic device 100 is in any hovering state.

[0076] It should be noted that: the fully flattened state means that the front face of the first side support member 233 and the front face of the second side support member 235 are coplanar, that is, the angle between the front face of the first side support member 233 and the front face of the second side support member 235 is 180 degrees; the fully folded state means that the front face of the first side support member 233 and the front face of the second side support member 235 form a teardrop-shaped space; the intermediate state means that the front face of the first side support member 233 and the front face of the second side support member 235 form any folded state except the coplanar and teardrop-shaped space, that is, the folded state of the electronic device 100 in which the angle between the front faces of the two frames 21 is greater than 0 degrees and less than 180 degrees.

[0077] Please also read Figure 3-Figure 4 and Figure 17-Figure 23When the rotating shaft device 22 is bent from the flat state, the first rotating mechanism 250 rotates toward the second rotating mechanism 255 relative to the base 220 along the corresponding first rotating axis L1, and the two third circular arc rails 2510 of the first rotating member 251 rotate in the third circular arc groove 2211 of the base 220 and one of the fifth circular arc grooves 2421 of the positioning member 24 respectively. The first connecting member 252 drives the first connecting rod member 261 to rotate toward the second connecting rod member 265 along the corresponding second rotating axis L2 relative to the base 220, and the first abutting spiral surface 2617a and the second abutting spiral surface 2617b at one end of the first receiving groove 2617 slide against the first spiral surface 2812 and the second spiral surface 2814 of the first linkage member 281, and the first abutting spiral surface 2617a and the second abutting spiral surface 2617b at the other end of the first receiving groove 2617 slide against the first spiral surface 2814 of the second linkage member 283. 265 and the second connecting rod 261 rotate around a pair of connecting shafts 226 and move closer to each other; the first connecting rod 261 and the second connecting rod 265 synchronously drive the first rotating mechanism 250 and the second rotating mechanism 255 to rotate around a pair of first rotating axis lines and move closer to each other.At the same time, during the process of the first rotating mechanism 250 and the second rotating mechanism 255 rotating closer to each other, the first connecting member 252 and the first side support member 233 rotate with each other through the cooperation of the first arc groove 2522 and the first arc rail 2336, and the first adjustment shaft 2526 of the first rotating member 251 rotates and slides in the first adjustment groove 2330 of the first side support member 233; the second connecting member 257 and the second side support member 235 rotate with each other through the cooperation of the second arc groove 2572 and the second arc rail 2356, and the second adjustment shaft 2576 of the second rotating member 256 rotates and slides in the second adjustment groove 2350 of the second side support member 235; specifically, the first adjustment shaft 2526 rotates and slides from the first positioning section 2333 to the second positioning section 2334 in the first adjusting groove 2 350 rotates and slides from the third positioning section 2353 to the fourth positioning section 2354, so that the first side support member 233 and the second side support member 235 on the opposite sides of the middle support member 231 are brought closer to each other until the first adjustment shaft 2526 is limited to the second positioning section 2334 and the second adjustment shaft 2576 is limited to the fourth positioning section 2354; the two first abutting cams 2910 of the first abutting member 291 respectively rotate to abut the corresponding first cam 2616 and the second cam 2656, and the two second abutting cams 2950 of the second abutting member 295 respectively rotate to abut the corresponding first cam 2616 and the second cam 2656 until the first connecting rod 261 and the second connecting rod 265 stop rotating, and the front face of the first side support member 233, the front face of the second side support member 235 and the front face of the middle support member 231 form a water drop-shaped cross section.

[0078] In other bending modes of the rotating shaft device 22, the second rotating mechanism 255 can be rotated toward the first rotating mechanism 250 along the corresponding first rotating axis L1 relative to the base 220, and the two fourth circular arc rails 2560 of the second rotating member 256 respectively rotate in the fourth circular arc groove 2213 of the base 220 and the fifth circular arc groove 2421 corresponding to the positioning member 24, and the second connecting member 257 drives the second connecting rod 265 to rotate along the corresponding second rotating axis L2 relative to the base 220. 0 rotates toward the first link member 261, the third helical surface 2813 and the fourth helical surface 2815 of the first linkage member 281 slide against the third abutting helical surface 2657a and the fourth abutting helical surface 2657b corresponding to the second link member 265, and at the same time, the third helical surface 2813 and the fourth helical surface 2815 of the second linkage member 283 slide against the third abutting helical surface 2657a and the fourth abutting helical surface 2657b corresponding to the second link member 265, so that the linkage member 261 rotates toward the first link member 261, the third helical surface 2813 and the fourth helical surface 2815 of the first linkage member 281 slide against the third abutting helical surface 2657a and the fourth abutting helical surface 2657b corresponding to the second link member 265, The movable assembly 28 slides along the axial direction of the connecting shaft 226 in a first direction, so that the first helical surface 2812 and the second helical surface 2814 of the first linkage member 281 slide against the first abutting helical surface 2617a and the second abutting helical surface 2617b corresponding to the first connecting rod member 261, respectively. At the same time, the first helical surface 2812 and the second helical surface 2814 of the second linkage member 283 slide against the first abutting helical surface 2617a and the second abutting helical surface 2617b corresponding to the first connecting rod member 261, respectively. The two abutting spiral surfaces 2617b enable the first connecting rod 261 and the second connecting rod 265 to rotate around a pair of connecting shafts 226 and approach each other; the first connecting rod 261 and the second connecting rod 265 synchronously drive the first rotating mechanism 250 and the second rotating mechanism 255 to rotate around a pair of connecting shafts 226 and approach each other until the front face of the first side support member 233, the front face of the second side support member 235 and the front face of the middle support member 231 form a water drop-shaped cross section.

[0079] In other bending methods, the first rotating mechanism 250 and the second rotating mechanism 255 can be simultaneously rotated around the two first rotating axis lines L1 relative to the base 220 in opposite directions, the first adjusting shaft 2526 rotates and slides in the first adjusting groove 2330, and the second adjusting shaft 2576 rotates and slides in the second adjusting groove 2350, so that the first side support member 232 and the second side support member 234 are brought closer to each other until the first adjusting shaft 2526 is limited to the second positioning section 2334 and the second adjusting shaft 2576 is limited to the fourth positioning section 2354; at the same time, the first abutting spiral surface 2617a and the first connecting rod 261 The second abutting spiral surface 2617b respectively slides against the first spiral surface 2812 and the second spiral surface 2812 corresponding to the linkage component 28, and the third abutting spiral surface 2657a and the fourth abutting spiral surface 2657b of the second connecting rod member 265 respectively slide against the third spiral surface 2813 and the fourth spiral surface 2815 corresponding to the linkage component 28, so that the linkage component 28 slides in the first direction along the axial direction of the connecting shaft 226 until the first connecting rod member 261 and the second connecting rod member 265 stop rotating, and the front face of the first side support member 233, the front face of the second side support member 235 and the front face of the middle support member 231 form a water drop-shaped cross-section.

[0080] During the bending process of the first side support member 233 and the second side support member 235 relative to the middle support member 231, the first arc rail 2336 on the first side support member 233 and the second arc rail 2356 on the second side support member 235 rotate simultaneously in the first arc groove 2522 on the first connecting member 252 and the second arc groove 2572 of the second connecting member 257, respectively. At the same time, the first adjustment shaft 2526 and the second adjustment shaft 2576 rotate and slide simultaneously in the first adjustment groove 2330 and the second adjustment groove 2350, respectively. Specifically, the first adjusting shaft 2526 is displaced from the first positioning section 2333 to the second positioning section 2334, and the second adjusting shaft 2576 is displaced from the third positioning section 2353 to the fourth positioning section 2354; the two third circular arc rails 2510 of the first rotating part 2511 rotate in the third circular arc groove 2211 and the corresponding fifth circular arc groove 2421 respectively, and at the same time, the two fourth circular arc rails 2560 of the second transmission part 2561 rotate in the fourth circular arc groove 2213 and the corresponding fifth circular arc groove 2421 respectively; the first connecting rod member 261 and the second connecting rod member 265 rotate around the two connecting shafts 226 respectively and approach each other, and the two first abutting cams 2910 of the first supporting member 291 abut against the first cam 2616 of the first connecting rod member 261 and the second connecting rod member 265 respectively. The second cam 2656 of the rod member 265 and the two second abutting cams 2950 of the second abutting member 295 respectively abut the first cam 2616 of the first connecting rod member 261 and the second cam 2656 of the second connecting rod member 265. At the same time, the first abutting spiral surface 2617a and the second abutting spiral surface 2617b of the first connecting rod member 261 respectively slide against the corresponding first spiral surface 2812 and the second spiral surface 2814. The third abutting spiral surface 2657a and the fourth abutting spiral surface 2657b of the second connecting rod member 265 respectively slide against the third spiral surface 2813 and the fourth spiral surface 2815, so that the linkage assembly 28 slides in the first direction along the axial direction of the connecting shaft 226, thereby realizing the synchronous folding of the first rotating member 251 and the second rotating member 256.Therefore, the linkage mechanism of the rotating shaft device 22 does not need to be realized by the meshing of gears, so that the structure of the rotating shaft device 22 is simple, the manufacturing cost is low, and the overall volume of the rotating shaft device 22 is reduced, which is conducive to the development of miniaturization of the product; secondly, when the first cam 2616 and the second cam 2656 rotate relative to the corresponding first abutting cam 2910 and the second abutting cam 2950 respectively, the friction resistance between the first cam 2616 and the corresponding first abutting cam 2910 and the friction resistance between the second cam 2656 and the corresponding first abutting cam 2910, as well as the friction resistance between the first rotating member 251 and the second rotating member 256 and the base 220 and the positioning member 24 respectively, can position the first rotating member 251 and the second rotating member 256 relative to the base 220, and the first connecting rod member 261 and the second connecting rod member 265 relative to the base 220, so that the first rotating member 251 is relatively The middle support member 231 is positioned at any angle between 0 and 90 degrees and the second rotating member 256 is positioned at any angle between 0 and 90 degrees relative to the middle support member 231; at the same time, the first side support member 233 and the second side support member 235 are respectively positioned at any angle between 0 and 120 degrees relative to the middle support member 231, so that the electronic device 100 can achieve a larger angle of hovering; in addition, the abutting member 285 keeps abutting the first linkage member 281 and the second linkage member 283, so that the first spiral surface 2812 and the second spiral surface 2814 abut against the first abutting spiral surface 2617a and the second abutting spiral surface 2617b respectively, and the third spiral surface 2813 and the fourth spiral surface 2815 respectively rotate to abut against the third abutting spiral surface 2657a and the fourth abutting spiral surface 2657b, so that the hinge device 22 has a better synchronous folding or unfolding effect.

[0081] When the rotating shaft device 22 is flattened from a completely folded state, the movement process of each component is opposite to that when the rotating shaft device 22 is bent from a flat state, which will not be described in detail herein.

[0082] Please also read Figure 1-Figure 4, place the installed hinge device 22 between the two frames 21, and fix the two opposite sides of the hinge device 22 to the two frames 21. Specifically, place the first side support members 233 and the second side support members 235 on the opposite sides of the base 220 in the mounting grooves 216 of the two frames 21, respectively, and connect the first connecting member 252 to one of the frames 21, and connect the second connecting member 257 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 members 233, the front faces of the middle support members 231, and the front faces of the second side support members 235 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 device 22; specifically, the bendable area 31 is attached to the front of the first side support member 233, the front of the middle support member 231, and the front of the second side support member 235 of the hinge device 22, and the two non-bending areas 33 are attached to the front 211 of the two frames 21. Since the overall volume of the hinge device 22 is small, the internal space occupied by the hinge device 22 in the folding housing 20 is reduced, which is beneficial to the layout of other components such as the motherboard or battery, and is beneficial to the miniaturization and thinness of the electronic device 100. In addition, the hinge device 22 uses the friction resistance between the first abutting member 291 and the second abutting member 295 of the damping mechanism 29 and the first connecting rod member 261 and the second connecting rod member 265 respectively, and the friction resistance between the first rotating member 251 and the second rotating member 256 and the base 220 and the positioning member 24 respectively, so that the bendable area 31 of the flexible screen 30 can be positioned at any bending angle, so that the two frames 21 can be freely adjusted in the unfolded state, the folded state and the intermediate state, that is, the electronic device 100 can be positioned in the unfolded state, the folded state and any intermediate state.

[0083] Please also read Figure 1-Figure 5 and Figure 22-Figure 23When the electronic device 100 is bent, a bending force is applied to at least one of the two frames 21 of the electronic device 100, so that the first connecting member 252 and the second connecting member 257 connected to the two frames 21 drive the first rotating member 251 and the second rotating member 256 to rotate synchronously relative to the base 220 and rotate in a direction close to each other, and the side of the first side support member 233 away from the middle support member 231 rotates relative to the first connecting member 252, and the side of the first side support member 233 close to the middle support member 231 is connected to the first side support member 233 by the first adjusting shaft 2526 and the first adjusting groove 2330. The side of the second side support member 235 away from the middle support member 231 is rotated relative to the second connecting member The first connecting member 252 and the second connecting member 257 respectively drive the first connecting rod 261 and the second connecting rod 265 to rotate relative to the base 220 around the corresponding connecting shaft 226 and approach each other. The first connecting rod 261 and the second connecting rod 265 are synchronously rotated relative to the base 220 through the linkage assembly 28 to realize the synchronous folding of the hinge device 22. The bendable area 31 of the flexible screen 30 bends with the hinge device 22 until the bendable area 31 bends into a water drop shape, thereby realizing the folding of the electronic device 100.

[0084] When the electronic device 100 is flattened, an unfolding force is applied to at least one of the two frames 21 of the electronic device 100, so that the first connecting member 252 and the second connecting member 257 connected to the two frames 21 drive the first rotating member 251 and the second rotating member 256 to rotate in the opposite direction relative to the base 220 and rotate in the direction away from each other, and the side of the first side supporting member 233 away from the middle supporting member 231 rotates relative to the first connecting member 252, and the side of the first side supporting member 233 close to the middle supporting member 231 is rotated through the first adjustment shaft 2 526 is connected to the first adjustment groove 2330 by rotation and sliding, the side of the second side support member 235 away from the middle support member 231 rotates relative to the second connecting member 257, and the side of the second side support member 235 close to the middle support member 231 is connected to the second adjustment groove 2350 by rotation and sliding through the second adjustment shaft 2576, so as to realize the synchronous unfolding of the hinge device 22, and the bendable area 31 of the flexible screen 30 unfolds with the hinge device 22 until the flexible screen 30 is completely flattened, thereby realizing the flattening of the electronic device 100.

[0085] The hinge device 22 of the electronic device 100 of the present invention can realize the synchronous folding or synchronous unfolding of the first side support member 233 and the second side support member 235 through the linkage component 28 arranged between the first connecting rod member 261 and the second connecting rod member 265, and the operation is convenient; the hinge device 22 has fewer components, a simple structure, and a low manufacturing cost, which reduces the internal space of the folding shell 20 occupied by the hinge device 22, which is beneficial to the layout of other components such as the motherboard or battery. Secondly, the friction resistance between the two first cams 2616 of the first connecting rod 261 and the corresponding first abutting cams 2910 and second abutting cams 2950, ​​the friction resistance between the two second cams 2656 of the second connecting rod 265 and the corresponding first abutting cams 2910 and second abutting cams 2950, ​​the friction resistance between the first rotating member 251 and the base 220 and the positioning member 24, and the friction resistance between the second rotating member 256 and the base 220 and the positioning member 24, enable the bendable area 31 of the flexible screen 30 to be positioned at any bending angle, so that the two frames 21 can be freely adjusted in the unfolded state, the folded state and the intermediate state, that is, the electronic device 100 can be positioned in the unfolded state, the folded state and any intermediate state, so that the two frames 21 of the electronic device 100 have a hovering function of 0 to 180 degrees, and the hovering angle range is large. In addition, the first connecting rod 261 is connected to the first linkage member 281 and the second linkage member 283 respectively through a double helical surface, and the second connecting rod 265 is connected to the first linkage member 281 and the second linkage member 283 respectively through a double helical surface; compared with the single curved surface adopted by the linkage member and the connecting rod, the double helical surface adopted in the present invention can stabilize the concentricity of the linkage assembly 28 and the first connecting rod 261 and the second linkage member 283, and has an axial limiting effect, which makes a significant contribution to the stability of the synchronous rotation of the folding device 22; at the same time, in order to further ensure the stability of the synchronous rotation of the folding device 22, the sliding is limited by the cooperation of the anti-slip part and the anti-slip groove between the base 220 and the rotating part, and the two connecting shafts 226 are positioned by the clamping pad 271, which can ensure that during the rotation of the first connecting rod 261 and the second connecting rod 265, the directional displacement of the synchronous shaft is reduced.

[0086] The above is an implementation of the embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the embodiment of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A rotating shaft device, characterized in that: The rotating shaft device comprises: Pedestal; A pair of connecting shafts, wherein one connecting shaft is disposed on one side of the base, and the other connecting shaft is disposed on the opposite side of the base; A first connecting rod, rotatably connected to one of the connecting shafts; A second connecting rod, rotatably connected to the other connecting shaft; and A linkage assembly is arranged between the first link member and the second link member, and the linkage assembly includes a first linkage member, a second linkage member, and a push member connected between the first linkage member and the second linkage member; the first linkage member and the second linkage member are both slidably connected to a pair of connecting shafts; the first link member is respectively connected to the first linkage member and the second linkage member through a double helical surface, and the second link member is respectively connected to the first linkage member and the second linkage member through a double helical surface; when the first link member and / or the second link member rotates around the corresponding connecting shaft, the linkage assembly slides along the axial direction of the connecting shaft to drive the first link member and the second link member to rotate synchronously relative to the base.

2. The rotating shaft device according to claim 1, characterized in that: The first connecting rod member includes a first rotating part rotatably connected to one of the connecting shafts, the second connecting rod member includes a second rotating part rotatably connected to the other connecting shaft, the first linkage member includes a first sliding part, the first sliding part is slidably connected to the connecting shaft along the axial direction of the connecting shaft, the second linkage member includes a second sliding part, the second sliding part is slidably connected to the connecting shaft along the axial direction of the connecting shaft; the first sliding part is connected to the first rotating part and / or the second rotating part through the double helical surface, and the second sliding part is connected to the first rotating part and / or the second rotating part through the double helical surface.

3. The rotating shaft device according to claim 2, characterized in that: The first linkage member also includes a first connecting plate, and the first sliding parts are respectively provided at opposite ends of the first connecting plate. The second linkage member also includes a second connecting plate, and the second sliding parts are respectively provided at opposite ends of the second connecting plate. The first rotating part is provided with a first receiving groove, and the second rotating part is provided with a second receiving groove. The first sliding part and the second sliding part on one side of the base are accommodated in the first receiving groove, and the first sliding part and the second sliding part on the other side of the base are accommodated in the second receiving groove. The first sliding part and the second sliding part in the first receiving groove are respectively connected to the first rotating part through the double helical surface, and the first sliding part and the second sliding part in the second receiving groove are respectively connected to the second rotating part through the double helical surface.

4. The rotating shaft device according to claim 3, characterized in that: The first rotating part is respectively provided with a first abutting helical surface and a second abutting helical surface at opposite ends of the first receiving groove, the first abutting helical surface and the second abutting helical surface have opposite rotation directions, and the first abutting helical surface and the second abutting helical surface are respectively located on opposite sides of the connecting shaft; the first sliding part and the second sliding part in the first receiving groove both include a first helical surface and a second helical surface, the first helical surface is slidably fitted with the corresponding first abutting helical surface, and the second helical surface is slidably fitted with the corresponding second abutting helical surface, and the first rotating part, the first helical surface, the second helical surface, the first abutting helical surface and the second abutting helical surface are coaxial.

5. The rotating shaft device according to claim 3, characterized in that: The second rotating portion is respectively provided with a third abutting helical surface and a fourth abutting helical surface at opposite ends of the second receiving groove, the third abutting helical surface and the fourth abutting helical surface have opposite rotation directions, and the third abutting helical surface and the fourth abutting helical surface are respectively located on opposite sides of the connecting shaft; the first sliding portion and the second sliding portion in the second receiving groove both include a third helical surface and a fourth helical surface, the third helical surface is slidably fitted with the corresponding third abutting helical surface, and the fourth helical surface is slidably fitted with the corresponding fourth abutting helical surface, and the second rotating portion, the third helical surface, the fourth helical surface, the third abutting helical surface and the fourth abutting helical surface are coaxial.

6. The rotating shaft device according to claim 3, characterized in that: The abutting member includes an abutting top portion connected to the connecting shaft, and opposite sides of the abutting top portion abut against the first sliding portion and the second sliding portion respectively, so that the two first sliding portions of the first linkage member abut against the first connecting rod member and the second connecting rod member respectively, and the two second sliding portions of the second linkage member abut against the first connecting rod member and the second connecting rod member respectively.

7. The rotating shaft device according to claim 6, characterized in that: The abutting member is made of a hard material, and is fixed to the first linkage member and / or the second linkage member by welding.

8. The rotating shaft device according to claim 6, characterized in that: The abutting member further comprises a connecting rod, and the abutting tops are respectively arranged at opposite ends of the connecting rod, one side of the connecting rod abuts against the first connecting plate, and the other side of the connecting rod abuts against the second connecting plate.

9. The rotating shaft device according to claim 2, characterized in that: It also includes a first abutment and a first elastic member, wherein the first abutment is slidably connected to a pair of connecting shafts along the axial direction of the connecting shaft, the first abutment and one end of the first rotating part are engaged through a cam, and / or the first abutment and one end of the second rotating part are engaged through another cam, and the first elastic member is used to push the first abutment and the first rotating part and / or the second rotating part against each other.

10. The rotating shaft device according to claim 9, characterized in that: It also includes a second abutment and a second elastic member, the second abutment is slidably sleeved on a pair of the connecting shafts along the axial direction of the connecting shaft, the second abutment and the other end opposite to the first rotating part are engaged through a cam, and / or the second abutment and the other end opposite to the second rotating part are engaged through a cam; the second elastic member is used to push the second abutment and the first rotating part and / or the second rotating part against each other.

11. The rotating shaft device according to claim 2, characterized in that: The base includes an anti-slip portion, and the opposite sides of the anti-slip portion extend out of the opposite sides of the base to form an anti-slip plate. A pair of connecting shafts are respectively passed through the two anti-slip plates. The first rotating portion corresponds to one of the anti-slip plates to form a first anti-slip groove, and the second rotating portion corresponds to the other anti-slip plate to form a second anti-slip groove, wherein one of the anti-slip plates is accommodated in the first anti-slip groove, and the other anti-slip plate is accommodated in the second anti-slip groove.

12. The rotating shaft device according to claim 9, characterized in that: The rotating shaft device also includes a first rotating mechanism, a second rotating mechanism and a positioning member, the first rotating mechanism is rotatably connected to one side of the base, the second rotating mechanism is rotatably connected to the other opposite side of the base, the positioning member is connected to a pair of connecting shafts, the first elastic member pushes the positioning member against the first rotating mechanism and the second rotating mechanism, the end of the first connecting rod away from the base is slidably connected to the first rotating mechanism, and the end of the second connecting rod away from the base is slidably connected to the second rotating mechanism.

13. The rotating shaft device according to claim 12, characterized in that: The first rotating mechanism includes a first rotating member and a first connecting member rotatably connected to the first rotating member, one end of the first rotating member away from the first connecting member is rotatably connected to the base, and the first connecting rod is slidably connected to the first connecting member; the second rotating mechanism includes a second rotating member and a second connecting member rotatably connected to the second rotating member, one end of the second rotating member away from the second connecting member is rotatably connected to the base, and the second connecting rod is slidably connected to the second connecting member.

14. A foldable housing, characterized in that: The folding shell includes the hinge device according to any one of claims 1 to 13 and two frames, and the opposite sides of the hinge device are respectively connected to the two frames.

15. An electronic device, characterized in that: The electronic device includes a flexible screen, two frames and a hinge device as described in any one of claims 1 to 13, wherein opposite sides of the hinge device are respectively connected to the two frames, and the flexible screen is connected to the two frames and the hinge device.

Images