Folding device, folding shell and electronic equipment

Abstract

The invention provides a folding device which comprises a base, a rotation assisting assembly and a rotating mechanism, the rotation assisting assembly comprises a first rotation assisting piece rotationally connected to the base, and the first rotation assisting piece is rotationally connected with the base through cooperation of a first arc rail and a first arc groove; the rotating mechanism comprises a rotating piece rotationally connected to the first rotation assisting piece, and the rotating piece and the first rotation assisting piece are rotationally connected through cooperation of a first rotating groove and a first rotating rail. The axis of the first arc rail and the axis of the first rotating rail are collinear, and the friction resistance of the rotating piece relative to the first rotation assisting piece is smaller than the friction resistance of the first rotation assisting piece relative to the base. The rotating piece can drive the first rotation assisting piece to rotate relative to the base. The invention further provides a folding shell provided with the folding device and electronic equipment.

Description

Technical Field

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

[0002] At present, foldable electronic products with bendable flexible displays are becoming more and more popular among people. The bendable flexible displays of foldable electronic products in the prior art are generally supported by a hinge mechanism. In order to make the foldable electronic products thinner and lighter, the size of the hinge mechanism needs to be smaller and smaller so as to leave more space for the battery or motherboard of the foldable electronic products. However, the existing hinge mechanism is limited by its small size, and the connection and matching amount between the various components of the existing hinge mechanism is small, which can easily cause the hinge mechanism to jam during the unfolding process, and in severe cases, it may cause the hinge mechanism to jam and fail. Summary of the invention

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

[0004] A folding device provided by the present application includes a base, an auxiliary rotation component and a rotating mechanism, wherein the auxiliary rotation component includes a first auxiliary rotation member rotatably connected to the base, and the first auxiliary rotation member and the base are rotatably connected through the cooperation of a first circular arc rail and a first circular arc groove; the rotating mechanism includes a rotating member rotatably connected to the first auxiliary rotation member, and the rotating member and the first auxiliary rotation member are rotatably connected through the cooperation of a first rotating groove and a first rotating rail; the axis of the first circular arc rail is colinear with the axis of the first rotating rail, and the friction resistance of the rotating member relative to the first auxiliary rotation member is less than the friction resistance of the first auxiliary rotation member relative to the base; the rotating member can drive the first auxiliary rotation member to rotate relative to the base.

[0005] The present application also provides a folding shell, which includes a folding device and two frames, the folding device includes a base, an auxiliary rotation component and a rotating mechanism, the auxiliary rotation component includes a first auxiliary rotation member rotatably connected to the base, the first auxiliary rotation member and the base are rotatably connected through the cooperation of a first circular arc rail and a first circular arc groove; the rotating mechanism includes a rotating member rotatably connected to the first auxiliary rotation member, the rotating member and the first auxiliary rotation member are rotatably connected through the cooperation of a first rotating groove and a first rotating rail; the axis of the first circular arc rail is colinear with the axis of the first rotating rail, the friction resistance of the rotating member relative to the first auxiliary rotation member is less than the friction resistance of the first auxiliary rotation member relative to the base; the rotating member can drive the first auxiliary rotation member to rotate relative to the base; the folding device is located between the two frames, and the two frames are respectively connected to opposite sides of the folding device.

[0006] The present application also provides an electronic device, which includes a flexible screen and a folding shell, the folding shell includes a folding device and two frames, the folding device includes a base, an auxiliary rotation component and a rotating mechanism, the auxiliary rotation component includes a first auxiliary rotation member rotatably connected to the base, the first auxiliary rotation member and the base are rotatably connected through the cooperation of a first circular arc rail and a first circular arc groove; the rotating mechanism includes a rotating member rotatably connected to the first auxiliary rotation member, the rotating member and the first auxiliary rotation member are rotatably connected through the cooperation of a first rotating groove and a first rotating rail; the axis of the first circular arc rail is colinear with the axis of the first rotating rail, the friction resistance of the rotating member relative to the first auxiliary rotation member is less than the friction resistance of the first auxiliary rotation member relative to the base; the rotating member can drive the first auxiliary rotation member to rotate relative to the base; the folding device is located between the two frames, the two frames are respectively connected to the opposite sides of the folding device, and the flexible screen is arranged on the folding shell.

[0007] The rotating part of the electronic device of the present application is rotationally connected to the base through the first auxiliary rotating part at one end away from the connecting part, the first auxiliary rotating part and the base are rotationally connected through the cooperation of the first circular arc rail and the first circular arc groove, and the rotating part and the first auxiliary rotating part are rotationally connected through the cooperation of the first rotating rail and the first rotating groove; so that the connection and cooperation amount between the rotating part and the first auxiliary rotating part is larger, the overlapping length of the rotating part and the first auxiliary rotating part is larger, the connection and cooperation amount between the first auxiliary rotating part and the base is larger, that is, the overlapping length of the first auxiliary rotating part and the base is larger, so as to avoid the problem of jamming or failure of the folding device during the unfolding process, so that the folding or unfolding of the electronic device is smoother and the user experience is improved. 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 are some implementations of the present invention, and for ordinary technicians in this field, other drawings can 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 decomposition of the folding shell from another perspective;

[0013] Figure 5 yes Figure 3 A schematic diagram of the three-dimensional structure of the folding device;

[0014] Figure 6 yes Figure 5 A schematic diagram of a three-dimensional structure decomposition of the folding device;

[0015] Figure 7 yes Figure 5 A schematic diagram of a three-dimensional structure of the folding device from another perspective;

[0016] Figure 8 yes Figure 7 A schematic diagram of a three-dimensional structure decomposition of the folding device;

[0017] Fig. 9 yes Figure 6 A schematic diagram of the three-dimensional structure of the folding aid component;

[0018] Fig.10 yes Fig. 9 A schematic diagram of the three-dimensional structure of the folding aid component from another perspective;

[0019] Fig.11 yes Fig. 9 A schematic diagram of the three-dimensional structure of the folding aid component;

[0020] Fig.12 yes Fig.10 A schematic diagram of the three-dimensional structure of the folding aid component;

[0021] Fig.13yes Fig.11 A further schematic diagram of the three-dimensional structure decomposition of the folding aid component;

[0022] Fig.14 yes Fig.12 A further schematic diagram of the three-dimensional structure decomposition of the folding aid component;

[0023] Fig.15 yes Fig.13 A magnified three-dimensional structure of the base from another perspective;

[0024] Fig.16 yes Fig.13 A schematic diagram of the three-dimensional structure of the rotation-assisting mechanism from another perspective;

[0025] Fig.17 yes Fig.13 A schematic diagram of a three-dimensional structure of the sliding aid mechanism from another perspective;

[0026] Fig.18 yes Fig.17 A schematic diagram of a three-dimensional structure of the sliding aid mechanism from another perspective;

[0027] Fig.19 yes Fig.13 A schematic diagram of the three-dimensional structure of the linkage mechanism and the limiting mechanism in FIG.

[0028] Fig. 20 yes Fig.19 A schematic diagram of the three-dimensional structure of the linkage mechanism and the limiting mechanism from another perspective;

[0029] Fig.21 yes Fig.19 A schematic diagram of the three-dimensional structure decomposition of the linkage mechanism and the limiting mechanism;

[0030] Fig. 22 yes Fig. 20 A schematic diagram of the three-dimensional structure decomposition of the linkage mechanism and the limiting mechanism;

[0031] Fig.23 yes Fig. 9 A three-dimensional cross-sectional view of the folding aid component;

[0032] Fig.24 yes Fig. 9 Another three-dimensional cross-sectional view of the folding aid component;

[0033] Fig.25 yes Fig. 9 Another three-dimensional cross-sectional view of the folding aid component in FIG.

[0034] Fig.26 yes Fig. 9 Another three-dimensional cross-sectional view of the folding aid component;

[0035] Fig. 27 yes Figure 2 A schematic diagram of a three-dimensional structure of a folding shell in one of the folding states;

[0036] Fig.28 yes Fig. 27 A schematic diagram of the three-dimensional structure of the folding device;

[0037] Fig.29 yes Fig.28 A three-dimensional cross-sectional view of the folding device in FIG.

[0038] Fig.30 yes Fig.28 Another three-dimensional cross-sectional view of the folding device in FIG.

[0039] Fig.31 yes Fig.28 Another three-dimensional cross-sectional view of the folding device in FIG.

[0040] Fig.32 yes Figure 2 A schematic diagram of a three-dimensional structure of a foldable shell in one of the unfolded states;

[0041] Fig.33 yes Fig.32 A schematic diagram of the three-dimensional structure of the folding device;

[0042] Fig.34 yes Fig.33 A three-dimensional cross-sectional view of the folding device in FIG.

[0043] Fig.35 yes Fig.33 Another three-dimensional cross-sectional view of the folding device in FIG.

[0044] Fig.36 yes Fig.33 Another three-dimensional cross-sectional view of the folding device in FIG.

[0045] Fig.37 yes Figure 1 A schematic diagram of a three-dimensional structure of an electronic device in a folded state;

[0046] Fig.38 yes Fig.37 A schematic diagram of a three-dimensional structure of the folding device in a folded state;

[0047] Fig.39 yes Fig.38 One of the three-dimensional cross-sectional views of the folding device in FIG.

[0048] Main markings:

[0049] 100. electronic device; 20. foldable housing; 21. frame; 211. front; 212. back; 214. side; 215. end face; 216. positioning groove; 217. mounting portion; 218. fixing hole; 30. flexible screen; 31. bendable area; 33. non-bending area; 50. folding device; 51. folding aid component; 52. supporting mechanism; 521. middle support member; 5212. connecting hole; 523. side support member; 5232. connecting area; 5233. first connecting portion; 5234. rotating groove; 5236. second connecting portion; 5237. adjusting groove; 5237a. first positioning section; 5237b. second positioning section; 53. base; 530. first receiving groove; 531. first circular Arc groove; 533, first seat body; 5331, clamping column; 5333, first stop block; 5335, second stop block; 534, positioning hole; 535, second seat body; 5351, clamping hole; 5352, rotation hole; 5353, third stop block; 5355, fourth stop block; 5354, connecting hole; 5356, fixing hole; 536, second circular arc groove; 537, second receiving groove; 54, rotation-assisting assembly; 541, first rotation-assisting member; 5410, first circular arc rail; 5411, first rotation groove; 5413, first rotation-assisting part; 5414, first stop block; 5415, first top block; 5416, second top block; 5417, first connecting part; 5418, first damping surface; 543, second Assisting member; 5430, second arc rail; 5431, second rotating groove; 5433, second assisting member; 5434, second anti-rotation block; 5437, second connecting member; 545, first damping member; 5452, second damping surface; 55, rotating mechanism; 550, rotating member; 551, rotating shaft; 552, rotating member; 5520, first rotating rail; 5522, second rotating rail; 5524, first anti-sliding block; 5526, second anti-sliding block; 553, connecting member; 5530, receiving opening; 5533, rotating cylinder; 5534, first axial hole; 555, connecting member; 5550, first slide groove; 5551, receiving groove; 5552, second slide groove; 5553, positioning cylinder; 5555, second axial hole; 555 6. Rotating rail; 5557. Avoiding groove; 56. Linkage mechanism; 561. Connecting shaft; 5610. Shaft body; 5612. Connecting cap; 5613. Positioning part; 5616. Slot; 562. Connecting rod; 5620. First guide rail; 5620a. First stop block; 5621. Driving gear; 5622. Sleeve; 5623. Sliding part; 5624. Shaft hole; 5625. Second guide rail; 5625a. Second stop block; 5626. First limiting surface; 5627. Second limiting surface; 5628. Adjusting shaft; 564. Gear assembly; 5642. Linkage gear; 5644. Rotating shaft; 565. Fixing member; 5652. Second guide slide hole; 5654. First supporting hole; 5656. Positioning part;5657, positioning rod; 57, limiting mechanism; 572, pushing member; 5720, first cam; 5724, first protrusion; 5725, first recess; 573, holding member; 5730, second cam; 5732, connecting portion; 5734, second protrusion; 5735, second recess; 5736, second supporting hole; 575, elastic member; 576, positioning member; 5761, guide plate; 5763, extension; 5765, first guide hole; 5767, avoidance hole; 5768, first anti-slip portion; 577, friction assembly; 5770, first friction member; 5772, first positioning hole; 5774, second anti-slip portion; 5775, second friction member; 5776, second positioning hole; 5778, fourth Anti-slip part; 578, gasket; 5782, through hole; 5784, third anti-slip part; 579, C-shaped buckle; 58, sliding component; 581, first sliding part; 5810, first sliding part; 5811, first slide rail; 5813, first guide groove; 5814, first positioning block; 5816, second positioning block; 5817, first connecting part; 583, second sliding part; 5830, second sliding part; 5831, second slide rail; 5833, second guide groove; 5834, third positioning block; 5836, fourth positioning block; 5837, second connecting part; 585, second damping part; 5852, damping part; 5854, positioning part; 59, back shell; 592, connecting part; 594, connecting column; 5942, connecting hole. ; DETAILED DESCRIPTION

[0050] 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.

[0051] 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.

[0052] 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.

[0053] Please also read Figures 1 to 8In one embodiment of the present invention, an electronic device 100 includes a foldable housing 20 and a foldable housing 20. The foldable housing 20 includes two frames 21 and a foldable device 50 disposed between the two frames 21. The two frames 21 are respectively connected to opposite sides of the foldable device 50, and the flexible screen 30 is disposed on the front of the two frames 21 and the front of the foldable device 50. The flexible screen 30 includes a bendable area 31 corresponding to the foldable device 50, and two non-bending areas 33 connected to opposite sides of the bendable area 31. The folding device 50 is used to support the bendable area 31 of the flexible screen 30. The folding device 50 includes a folding-assisting component 51, a supporting mechanism 52 connected to the front of the folding-assisting component 51, and a back shell 59 connected to the back of the folding-assisting component 51; the folding-assisting component 51 includes a base 53, a rotation-assisting component 54, a rotation mechanism 55, a linkage mechanism 56 and a limit mechanism 57, and the linkage mechanism 56 is located between the limit mechanism 57 and the rotation mechanism 55; the rotation-assisting component 54 includes a first rotation-assisting member 541 rotatably connected to the base 53, and the base 53 and the first rotation-assisting member 541 are connected by a first arc track. The rotating mechanism 55 comprises a rotating member 550 and a connecting member 555, the rotating member 550 is rotatably connected to the first auxiliary rotating member 541, the connecting member 555 is rotatably connected to an end of the rotating member 550 away from the base 53, the rotating member 550 and the first auxiliary rotating member 541 are rotatably connected through the first rotating groove and the first rotating rail; the axis of the first circular arc rail is colinear with the axis of the first rotating rail, and the friction resistance of the rotating member 550 relative to the first auxiliary rotating member 541 is less than the friction resistance of the first auxiliary rotating member 541 relative to the base 53. During the folding or unfolding process of the folding device 50, the rotating member 550 first rotates relative to the first auxiliary rotating member 541, and then the rotation of the rotating member 550 drives the rotating member 550 and the first auxiliary rotating member 541 to further rotate relative to the base 53; specifically, when the folding device 50 is folded, the rotating member 550 rotates relative to the first auxiliary rotating member 541 toward the side close to the flexible screen 30, and the rotating member 550 rotates for a distance in the first rotation direction and then drives the first auxiliary rotating member 541 to rotate relative to the base 53 in the first rotation direction until the folding device 50 is folded into a completely folded state; when the folding device 50 is unfolded, the rotating member 550 rotates relative to the first auxiliary rotating member 541 toward the side away from the flexible screen 30, and the rotating member 550 rotates for a distance in the second rotation direction and then drives the first auxiliary rotating member 541 to rotate relative to the base 53 in the second rotation direction until the folding device 50 is unfolded into a flattened state, and the first rotation direction is opposite to the second rotation direction. The support mechanism 52 is folded or unfolded with the folding device 50, the two frames 21 are folded or unfolded by the folding device 50, and the flexible screen 30 can be bent or flattened with the folding shell 20. The bendable area 31 can be bent into a U-shape or a teardrop shape or other shapes. In this embodiment, the bendable area 31 can be bent into a teardrop shape.In this embodiment, the front side refers to the side facing the same direction as the light-emitting surface of the flexible screen 30, the back side refers to the side facing away from the light-emitting surface of the flexible screen 30, and the specific angle refers to the angle between the front sides of the two frames 21 in the range of 0 degrees to 180 degrees. 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, or any other product and component with a display function. The "connection" in the description of the embodiment of the present invention includes two situations: direct connection and indirect connection. For example, the connection between A and B includes direct connection between A and B or connection through a third element C or more other elements. The connection also includes two situations: integrated connection and non-integrated connection. The integrated connection means that A and B are formed and connected as one, and the non-integrated connection means that A and B are formed and connected as a non-integrated.

[0054] The end of the rotating member 550 of the electronic device 100 of the present invention away from the connecting member 555 is rotationally connected to the base 53 through the first auxiliary rotating member 541, the first auxiliary rotating member 541 and the base 53 are rotationally connected through the cooperation of the first circular arc rail and the first circular arc groove, and the rotating member 550 and the first auxiliary rotating member 541 are rotationally connected through the cooperation of the first rotating rail and the first rotating groove; so that the connection and cooperation amount between the rotating member 550 and the first auxiliary rotating member 541 is large, that is, the overlapping length of the rotating member 550 and the first auxiliary rotating member 541 is large, and the connection and cooperation amount between the first auxiliary rotating member 541 and the base 53 is large, that is, the overlapping length of the first auxiliary rotating member 541 and the base 53 is large, so as to avoid the problem of jamming or failure of the folding device 50 during the unfolding process, so that the folding or unfolding of the electronic device 100 is smoother, and the user experience is improved.

[0055] like Figure 3 and Figure 4 As shown, the frame body 21 includes a front side 211, a back side 212, two opposite side surfaces 214 and two opposite end surfaces 215. A positioning groove 216 is provided on the side of the front side 211 close to the folding device 50. The opposite ends of the positioning groove 216 extend to the two side surfaces 214 respectively. One side of the positioning groove 216 passes through the end surface 215 facing the folding device 50. The frame body 21 is provided with mounting portions 217 at the opposite ends of the positioning groove 216 respectively. The mounting portion 217 is provided with a plurality of fixing holes 218 passing through the back side 212.

[0056] In this embodiment, the folding aid assembly 51 includes two rotating mechanisms 55 and two first rotating aid members 541, wherein one end of the rotating member 550 of one rotating mechanism 55 away from the connecting member 555 is rotatably connected to one side of the base 53 through a first rotating aid member 541, and one end of the rotating member 550 of the other rotating mechanism 55 away from the connecting member 555 is rotatably connected to the other opposite side of the base 53 through another first rotating aid member 541. At least one folding aid assembly 51 is provided on the back of the support mechanism 52. In this embodiment, folding aid assemblies 51 are provided at opposite ends of the back of the support mechanism 52. In other embodiments, more than three folding aid assemblies 51 are provided on the back of the support mechanism 52, and the more than three folding aid assemblies 51 are arranged along the length direction of the support mechanism 52.

[0057] Please also read Figure 9-Figure 14 The rotating member 550 includes a rotating portion 552 and a connecting portion 553, which are respectively arranged at opposite ends of the rotating member 550. The rotating portion 552 is rotatably connected to the base 53 through the first auxiliary rotating member 541, and the connecting portion 553 is rotatably connected to the connecting member 555 through the rotating shaft 551. Specifically, the base 53 and the first rotation-assisting member 541 are rotationally connected through the cooperation of the first circular arc rail and the first circular arc groove, the first circular arc rail is provided at one of the base 53 and the first rotation-assisting member 541, and the first circular arc groove is provided at the other of the base 53 and the first rotation-assisting member 541; the first rotation-assisting member 541 and the rotating part 552 are rotationally connected through the cooperation of the first rotating groove and the first rotating rail, the first rotating groove is provided at one of the first rotation-assisting member 541 and the rotating part 552, and the first rotating rail is provided at the other of the first rotation-assisting member 541 and the rotating part 552, and the axis of the first circular arc groove on the same side of the base 53 is collinear with the axis of the first rotating groove.

[0058] A receiving space is provided on the front side of the base 53, and the first rotation-assisting member 541 is rotatably accommodated in the receiving space. The first circular arc groove 531 is provided on the base 53, and the first circular arc groove 531 is connected to the receiving space. The first circular arc rail 5410 is provided on the first rotation-assisting member 541, and the first circular arc rail 5410 is rotatably accommodated in the first circular arc groove 531; the first rotating groove 5411 is provided on the first rotation-assisting member 541, and the first rotating rail 5520 is provided on the rotating member 550, and the first rotating rail 5520 is rotatably accommodated in the first rotating groove 5411. In this embodiment, first receiving grooves 530 are respectively provided on opposite sides of the front side of the base 53, and two first rotation-assisting members 541 are respectively rotatably accommodated in the two first receiving grooves 530 of the base 53, and the rotating parts 552 of the two rotating members 550 are respectively connected to the two first rotation-assisting members 541; the base 53 is provided with a first arc groove 531 on the inner side surface of each first receiving groove 530, and the axes of the two first arc grooves 531 are spaced apart and parallel, and the opposite ends of the first arc groove 531 respectively pass through the front side of the base 53. A first circular arc rail 5410 is provided on the same side of the two first rotation-assisting members 541, and the axes of the two first circular arc rails 5410 are spaced apart and parallel; a first rotation groove 5411 is provided on the side of the two first rotation-assisting members 541 away from the first circular arc rail 5410, and the axes of the two first rotation grooves 5411 are spaced apart and parallel; a first rotation rail 5520 is provided on the same side of the two rotating parts 552, and the axes of the two first rotation rails 5520 are spaced apart and parallel; when the first rotation-assisting members 541 are clamped between the rotating part 552 and the base 53, the first rotation rail 5520 can be rotatably accommodated in the corresponding first rotation groove 5411, and the first circular arc rail 5410 can be rotatably accommodated in the corresponding first circular arc groove 531.

[0059] Optionally, the first arc rails 5410 and the first rotation groove 5411 on opposite sides of the first rotation-assisting member 541 are coaxial. Further, the first arc rails 5410 are directly opposite to the first rotation groove 5411 and share a common arc surface with the first rotation groove 5411 .

[0060] like Fig.13 and Fig.14As shown, the base 53 includes a first seat body 533 and a second seat body 535, the first seat body 533 is connected to the second seat body 535, the auxiliary rotation assembly 54 also includes a second auxiliary rotation member 543, the first auxiliary rotation member 541 and the second auxiliary rotation member 543 are located between the first seat body 533 and the second seat body 535, the first auxiliary rotation member 541 and the first seat body 533 are connected to rotate with the cooperation of the first circular arc groove 531 and the first circular arc rail 5410, the second auxiliary rotation member 543 and the second seat body 535 are connected to rotate with the cooperation of the second circular arc groove and the second circular arc rail, the first circular arc groove 531 and the second circular arc groove are coaxial; the second circular arc groove is provided in one of the second seat body 535 and the second auxiliary rotation member 543, and the second circular arc rail is provided in the other of the second seat body 535 and the second auxiliary rotation member 543. In this embodiment, a second arc groove 536 is provided on the second seat body 535, and a second arc rail 5430 is provided on the second rotation-assisting member 543. The rotating portion 552 is located between the first rotation-assisting member 541 and the second rotation-assisting member 543, and the rotating portion 552 is rotationally connected with the first rotation-assisting member 541 through the cooperation of the first rotation groove 5411 and the first rotation rail 5520, and the rotating portion 552 is rotationally connected with the second rotation-assisting member 543 through the cooperation of the second rotation groove and the second rotation rail, the second rotation groove is provided in one of the rotating portion 552 and the second rotation-assisting member 543, and the second rotation rail is provided in the other of the rotating portion 552 and the second rotation rail, and the first rotation groove is coaxial with the second rotation groove. Specifically, second receiving grooves 537 are respectively provided on opposite sides of the front side of the second seat body 535, and two second rotation-assisting members 543 are respectively rotatably accommodated in the two second receiving grooves 537 of the second seat body 535. The rotating parts 552 of the two rotating members 550 are respectively connected to the two second rotation-assisting members 543, and the second seat body 535 is provided with a second arc groove 536 on the inner side of each second receiving groove 537. The axes of the two second arc grooves 536 are spaced parallel, and the opposite ends of the second arc groove 536 respectively pass through the front side of the second seat body 535. The same side of the two second rotation-assisting members 543 is provided with a second circular arc rail 5430, and the axes of the two second circular arc rails 5430 are spaced parallel to each other; the side of the two second rotation-assisting members 543 away from the second circular arc rail 5430 is provided with a second rotation groove 5431, and the axes of the two second rotation grooves 5431 are spaced parallel to each other; the side of the two rotating parts 552 away from the first rotating rail 5520 is provided with a second rotating rail 5522, and the axes of the two second rotating rails 5522 are spaced parallel to each other. When the second rotation-assisting member 543 is clamped between the rotating part 552 and the second seat 535, the second rotating rail 5522 is rotatably accommodated in the corresponding second rotating groove 5431, and the second circular arc rail 5430 is rotatably accommodated in the corresponding second circular arc groove 536.

[0061] Optionally, the second arc rails 5430 and the second rotation groove 5431 on opposite sides of the second rotation-assisting member 543 are coaxial; further, the second arc rail 5430 is directly opposite to the second rotation groove 5431 and shares a common arc surface with the second rotation groove 5431 .

[0062] First receiving grooves 530 are respectively provided on opposite sides of the front side of the first base body 533, one end of the first receiving groove 530 passes through the end surface of the first base body 533 facing the first rotation-assisting member 541, and the first arc groove 531 is provided on the inner side surface of the first base body 533 facing the first receiving groove 530; the first base body 533 and the second base body 535 are connected by a clamping column and a clamping hole, the clamping column is provided on one of the first base body 533 and the second base body 535, and the clamping hole is provided on the other of the first base body 533 and the second base body 535; in this embodiment, a clamping column 5331 is provided on one end of the first base body 533 facing the second base body 535, and a clamping hole 5351 is provided on one end of the second base body 535 facing the first base body 533. When the clamping column 5331 is inserted into the clamping hole 5351, the first receiving groove 530 and the second receiving groove 537 on the same side of the base 53 together form a receiving space, and the first arc groove 531 and the second arc groove 536 on the same side of the base 53 are coaxial. Optionally, the front of the first base body 533 and the front of the second base body 535 are respectively provided with a positioning hole 534, and the locking piece passes through the positioning hole 534 and is locked to the back shell 59, so that the base 53 is fixedly connected to the back shell 59. Two rotating holes 5352, two connecting holes 5354 and a fixing hole 5356 are provided on the end surface of the second base body 535 facing the linkage mechanism 56. The two rotating holes 5352 are located on opposite sides of the second base body 535, the two connecting holes 5354 are located between the two rotating holes 5352, and the fixing hole 5356 is located between the two connecting holes 5354. The axes of the two rotating holes 5352 and the two connecting holes 5354 are parallel to the rotation axis between the rotating member 550 and the base 53.

[0063] In some embodiments, the first arc groove 531 on the first seat body 533 and the first arc rail 5410 of the first auxiliary rotation member 541 can be interchangeable. Specifically, the first seat body 533 is provided with a first arc rail on the inner side surface of each first receiving groove 530, and the first auxiliary rotation member 541 is provided with a first arc groove on the side facing the first seat body 533, and the first arc rail can be rotatably accommodated in the first arc groove; the first rotating groove 5411 on the first auxiliary rotation member 541 and the first rotating rail 5520 on the rotating part 552 can be interchangeable. Specifically, the first auxiliary rotation member 541 is provided with a first rotating rail on the side facing away from the first seat body 533, and the rotating part 552 is provided with a first rotating groove 5411 on the side facing the first auxiliary rotation member 541, and the first rotating rail can be rotatably accommodated in the first rotating groove. The second arc groove 536 on the second seat body 535 and the second arc rail 5430 of the second auxiliary rotating member 543 are interchangeable. Specifically, the second seat body 535 is provided with a second arc rail on the inner side surface of each second receiving groove 537, and the second auxiliary rotating member 543 is provided with a second arc groove on the side facing the second seat body 535, and the second arc rail can be rotatably accommodated in the second arc groove; the second rotating groove 5431 on the second auxiliary rotating member 543 and the second rotating rail 5522 on the rotating part 552 are interchangeable. Specifically, the second auxiliary rotating member 543 is provided with a second rotating rail on the side facing away from the second seat body 535, and the rotating part 552 is provided with a second rotating groove 5431 on the side facing the second auxiliary rotating member 543, and the second rotating rail can be rotatably accommodated in the second rotating groove.

[0064] Please also read Figure 13-Figure 15The first seat body 533 is respectively provided with a first stop block 5333 and a second stop block 5335 at the opposite ends of the first arc groove 531, and a first stop block 5414 is provided on the first arc rail 5410. The first stop block 5414 is accommodated in the corresponding first arc groove 531 and is located between the first stop block 5333 and the second stop block 5335; when the folding device is in a folded state, the first stop block 5414 stops at the first stop block 5333; when the folding device is in an unfolded state, the first stop block 5414 stops at the second stop block 5335. In this embodiment, the first stopper 5333 at both ends of each first arc groove 531 is farther away from the middle of the first seat body 533 than the second stopper 5335; the first stopper 5414 is convexly arranged on the side of the first arc rail 5410 away from the first rotating groove 5411, and the first stopper 5414 is close to one end of the middle of the base 53. The first rotation-assisting member 541 is provided with a first abutting block 5415 and a second abutting block 5416 at opposite ends of the first rotating groove 5411, respectively, and the first abutting block 5415 is farther away from the middle of the first seat body 533 than the second abutting block 5416, and the first rotating rail 5520 is provided with a first stopper 5524, and the first stopper 5524 is located at one end of the first rotating rail 5520 away from the connecting portion 553. When the folding device is in a folded state, the first stop slide 5524 stops at the first impact block 5415, and the first rotation stop block 5414 stops at the first stop block 5333; when the folding device is in an unfolded state, the first stop slide 5524 stops at the second impact block 5416, and the first rotation stop block 5414 stops at the second stop block 5335.

[0065] The second seat body 535 is respectively provided with a third stop block 5353 and a fourth stop block 5355 at the opposite ends of the second arc groove 536, and a second stop block 5434 is provided on the second arc rail 5430. The second stop block 5434 is accommodated in the corresponding second arc groove 536 and is located between the third stop block 5353 and the fourth stop block 5355; when the folding device is in a folded state, the second stop block 5434 stops at the third stop block 5353; when the folding device is in an unfolded state, the second stop block 5434 stops at the fourth stop block 5355. In this embodiment, the third stop blocks 5353 at both ends of each second arc groove 536 are farther away from the middle of the second base body 535 than the fourth stop blocks 5355; the second stop block 5434 is protruded from the side of the second arc rail 5430 away from the second rotating groove 5431, and the second stop block 5434 is close to one end of the middle of the base 53. The second auxiliary rotating member 543 is respectively provided with a third resisting block 5435 and a fourth resisting block 5436 at the opposite ends of the second rotating groove 5431. The third resisting block 5435 is farther away from the middle of the second seat body 535 than the fourth resisting block 5436. A second stop block 5526 is provided on the second rotating rail 5522 of the rotating part 552. The second stop block 5526 is located at an end of the second rotating rail 5522 away from the connecting part 553; when the folding device is in a folded state, the second stop block 5526 stops at the third resisting block 5435, and the second rotation stop block 5434 stops at the third stop block 5353; when the folding device is in an unfolded state, the second stop block 5526 stops at the fourth resisting block 5436, and the second rotation stop block 5526 stops at the fourth stop block 5355.

[0066] like Figure 13-Figure 16As shown, the first rotation-assisting member 541 includes a first rotation-assisting portion 5413 and a first connecting portion 5417 connected to the first rotation-assisting portion 5413, the first circular arc rail 5410 is arranged on one side of the first rotation-assisting portion 5413, the first rotation groove 5411 is arranged on the side of the first rotation-assisting portion 5413 away from the first circular arc rail 5410, and the first circular arc rail 5410 and the first rotation groove 5411 are coaxial. The first connecting portion 5417 is located on the side of the first rotation-assisting portion 5413 provided with the first rotation groove 5411. In this embodiment, the first rotation-assisting portion 5413 is a first semicircular block, the first arc track 5410 is convexly provided on one side of the first semicircular block, and the first rotation groove 5411 is provided on the other side of the first semicircular block; the first connecting portion 5417 is a first arc-shaped plate, one end of the first arc-shaped plate is connected to one side of the first semicircular block, and the first connecting portion 5417 and the first rotation groove 5411 are located on the same side of the first semicircular block. Optionally, the first semicircular block, the first arc-shaped plate, the first arc track 5410 and the first rotation groove 5411 are coaxial. The second rotation-assisting member 543 includes a second rotation-assisting portion 5433 and a second connecting portion 5437 connected to the second rotation-assisting portion 5433. The second circular arc track 5430 is provided on one side of the second rotation-assisting portion 5433. The second rotation groove 5431 is provided on the side of the second rotation-assisting portion 5433 away from the second circular arc track 5430. The second circular arc track 5430 and the second rotation groove 5431 are coaxial. The second connecting portion 5437 is located on the side of the second rotation-assisting portion 5433 where the second rotation groove 5431 is provided. In this embodiment, the second rotation-assisting portion 5433 is a second semicircular block, the second circular arc track 5430 is convexly provided on one side of the second semicircular block, and the second rotation groove 5431 is provided on the other side opposite to the second semicircular block; the second connecting portion 5437 is a second circular arc plate, one end of which is connected to one side of the second semicircular block, and the second connecting portion 5437 and the second rotation groove 5431 are located on the same side of the second semicircular block. Optionally, the second semicircular block, the second arc plate, the second arc rail 5430 and the second rotation groove 5431 are coaxial. The end of the first connecting portion 5417 away from the first rotation-assisting portion 5413 can be connected to the end of the second connecting portion 5437 away from the second rotation-assisting portion 5433, and the first connecting portion 5417 and the second connecting portion 5437 can be fixedly connected by, but not limited to, welding, clamping or gluing.

[0067] like Fig.13 and Fig.14As shown, the rotation-assisting assembly 54 further includes a first damping member 545, which is clamped between the first rotation-assisting member 541 and the base 53, so that the first rotation-assisting member 541 has a larger friction resistance when rotating relative to the base 53; and / or, the first damping member 545 is also clamped between the second rotation-assisting member 543 and the base 53, so that the second rotation-assisting member 543 has a larger friction resistance when rotating relative to the base 53. In this embodiment, a first damping member 545 is provided between each first rotation-assisting member 541 and the first seat 533, and a first damping member 545 is provided between each second rotation-assisting member 543 and the second seat 535. Optionally, the first damping member 545 is positioned at the first arc groove 531, the first stop block 5414 includes a first damping surface 5418, and the first damping member 545 includes a second damping surface 5452. When the first rotation-assisting member 541 rotates relative to the first seat body 533, the first damping surface 5418 can slidably abut against the second damping surface 5452. At least one of the first damping surface 5418 and the second damping surface 5452 is provided with a damping structure, which can be but is not limited to a damping protrusion, a damping hole or a rough surface. The first damping member 545 is located between the second rotation-assisting member 543 and the second seat body 535. The first damping member 545 can be positioned at the second arc groove 536. The second stop block 5434 includes a first damping surface 5418. When the second rotation-assisting member 543 rotates relative to the second seat body 535, the first damping surface 5418 can slidably abut against the second damping surface 5452. In this embodiment, in the first damping member 545 located between the first seat body 533 and the first auxiliary rotation member 541, the first damping surface 5418 is arranged on the side of the first stop block 5414 facing the first seat body 533, and the second damping surface 5452 is arranged on the side of the first damping member 545 facing the first auxiliary rotation member 541; in the first damping member 545 located between the second seat body 535 and the second auxiliary rotation member 543, the first damping surface 5418 is arranged on the side of the second stop block 5434 facing the second seat body 535, and the second damping surface 5452 is arranged on the side of the first damping member 545 facing the second auxiliary rotation member 543.

[0068] In this embodiment, the first damping member 545 is an arc-shaped spring piece, which is accommodated in the first arc groove 531, and the first damping member 545 is positioned on the first seat body 533 or the first stop block 5414; the spring piece is accommodated in the second arc groove 536, and the first damping member 545 can be positioned on the second seat body 535 or the second stop block 5434.

[0069] In other embodiments, the first damping member 545 can be positioned at the first stop block 5414, and the first damping member 545 rotates with the first auxiliary rotation member 541 relative to the first seat body 533, so that there is a larger friction resistance between the first auxiliary rotation member 541 and the first seat body 533; optionally, a damping structure is provided on the side of the first damping member 545 facing away from the first stop block 5414, and a damping structure is provided on the inner surface of the first arc groove 531 of the first seat body 533.

[0070] In other embodiments, the first damping member 545 can be positioned at the second stop block 5434, and the first damping member 545 rotates with the second auxiliary rotation member 543 relative to the second seat body 535, so that there is a larger friction resistance between the second auxiliary rotation member 543 and the second seat body 535; optionally, a damping structure is provided on the side of the first damping member 545 facing away from the second stop block 5434, and a damping structure is provided on the inner surface of the second arc groove 536 of the second seat body 535.

[0071] like Figure 9-Figure 14 As shown, the end of the connecting portion 553 away from the rotating portion 552 and the corresponding connecting member 555 are rotatably connected to one end of the connecting member 555 through a rotating shaft 551, and the linkage mechanism 56 is connected to the other opposite end of the connecting member 555. A receiving opening 5530 is provided at one end of the rotating member 550 close to the connecting member 555, and rotating cylinders 5533 are respectively provided on opposite sides of the receiving opening 5530 of the rotating member 550, and the two rotating cylinders 5533 are coaxial; a receiving groove 5551 is provided at one end of the connecting member 555, and the rotating cylinder 5533 is rotatably accommodated in the receiving groove 5551. Specifically, the end of the connecting part 553 away from the rotating part 552 is provided with two lugs spaced from each other, and each lug is provided with a rotating cylinder 5533 at one end away from the rotating part 552. The two rotating cylinders 5533 and the two lugs surround a receiving opening 5530. The rotating cylinder 5533 is provided with a first axial hole 5534 along its axial direction, and the receiving opening 5530 is communicated with the first axial hole 5534. The receiving groove 5551 is located at one end of the front of the connecting member 555 away from the base 53. Specifically, the front of the connecting member 555 is provided with positioning cylinders 5553 at opposite ends of the receiving groove 5551, and the two positioning cylinders 5553 are coaxial. The positioning cylinder 5553 is provided with a second axial hole 5555 along its axis, and the second axial hole 5555 is communicated with the receiving groove 5551. When the two rotating cylinders 5533 are rotatably received in the receiving grooves 5551 , the two rotating cylinders 5533 are located between the two positioning cylinders 5553 , and the rotating shaft 551 is inserted into the second shaft holes 5555 of the two positioning cylinders 5553 and the first shaft holes 5534 of the two rotating cylinders 5533 .

[0072] like Figure 9-Figure 14As shown, the folding device further includes a connecting shaft 561, a connecting rod 562, a sliding aid assembly 58 and a gear assembly 564. The connecting shaft 561 is connected to one side of the base 53. The axis of the connecting shaft 561 is parallel to the axis of the first circular arc rail 5410. The connecting rod 562 is rotatably connected to the connecting shaft 561. The connecting rod 562 can rotate around the axis of the connecting shaft 561. In this embodiment, each folding aid assembly 51 includes two connecting shafts 561, two connecting rods 562 and two sliding aid assemblies 58. The two connecting shafts 561 are rotatably connected to opposite sides of the base 53, respectively. The two connecting rods 562 are respectively connected to the two connecting shafts 561. The gear assembly 564 is disposed between the two connecting rods 562. One of the connecting rods 562 is slidably connected to one of the rotating mechanisms 55 through one of the sliding aid assemblies 58, and the other connecting rod 562 is slidably connected to the other rotating mechanism 55 through the other sliding aid assembly 58. Specifically, one end of one connecting rod member 562 away from the base 53 is slidably connected to one end of one connecting member 555 away from the rotating member 550 through one sliding aid component 58, and the other end of the other connecting rod member 562 away from the base 53 is slidably connected to one end of the other connecting member 555 away from the rotating member 550 through another sliding aid component 58.

[0073] The sliding aid component 58 includes a first sliding aid component 581, a second sliding aid component 583 and a second damping component 585. The first sliding aid component 581 is slidably connected to the connecting component 555, and one end of the connecting rod 562 away from the base 53 is slidably connected to the first sliding aid component 581. The sliding direction of the first sliding aid component 581 relative to the connecting component 555 is consistent with the sliding direction of the connecting rod 562 relative to the first sliding aid component 581. The sliding direction of the first sliding aid component 581 relative to the connecting component 555 is perpendicular to the axial direction of the connecting shaft 561; the second sliding aid component 583 is slidably connected to the connecting component 555, and one end of the connecting rod 562 away from the base 53 is slidably connected to the second sliding aid component 583. The sliding direction of the second sliding aid component 583 relative to the connecting component 555 is parallel to the sliding direction of the connecting rod 562 relative to the second sliding aid component 583. The sliding direction of the second sliding aid component 583 relative to the connecting component 555 is perpendicular to the axial direction of the connecting shaft 561. The friction resistance of relative sliding between the first sliding member 581 and the corresponding connecting member 555 is greater than the friction resistance of relative sliding between the connecting rod 562 and the corresponding first sliding member 581; the friction resistance of relative sliding between the second sliding member 583 and the corresponding connecting member 555 is greater than the friction resistance of relative sliding between the connecting rod 562 and the corresponding second sliding member 583. A second damping member 585 is provided between the first sliding member 581 and the connecting member 555 so that the first sliding member 581 has friction resistance when sliding relative to the connecting member 555; and / or, a second damping member 585 is provided between the second sliding member 583 and the connecting member 555 so that the second sliding member 583 has friction resistance when sliding relative to the connecting member 555. In this embodiment, a second damping member 585 is provided between the first sliding member 581 and the connecting member 555, and a second damping member 585 is provided between the second sliding member 583 and the connecting member 555.

[0074] The first sliding member 581 and the connecting member 555 are connected by the cooperation of the first sliding groove and the first sliding rail, the first sliding groove is provided at one of the connecting member 555 and the first sliding member 581, the first sliding rail is provided at the other of the connecting member 555 and the first sliding member 581, the length direction of the first sliding groove is parallel to the length direction of the first guide groove, and the first sliding rail is slidably accommodated in the first sliding groove; the connecting rod member 562 and the first sliding member 581 are connected by the cooperation of the first guide groove and the first guide rail, the first guide groove is provided at one of the first sliding member 581 and the connecting rod member 562, the first guide rail is provided at the other of the first sliding member 581 and the connecting rod member 562, and the first guide rail is slidably accommodated in the first guide groove; the friction resistance between the first sliding rail and the first sliding groove is greater than the friction resistance between the first guide rail and the first guide groove, and the connecting member 555 can drive the first sliding member 581 to slide relative to the connecting rod member 562. In this embodiment, a first slide groove 5550 is opened at one end of the connecting member 555, a first slide rail 5811 is provided on one side of the first sliding auxiliary member 581, and the first slide rail 5811 can be slidably inserted in the first slide groove 5550; a first guide groove 5813 is provided on the side of the first sliding auxiliary member 581 away from the first slide rail 5811, and a first guide rail 5620 is provided on the side of the end of the connecting rod member 562 away from the base 53.

[0075] The second sliding aid 583 and the connecting member 555 are connected by the cooperation of the second sliding groove and the second sliding rail, the second sliding groove is provided in one of the connecting member 555 and the second sliding aid 583, the second sliding rail is provided in the other of the connecting member 555 and the second sliding aid 583, and the second sliding rail is slidably accommodated in the second sliding groove; the connecting rod member 562 and the second sliding aid 583 are connected by the cooperation of the second guide groove and the second guide rail, the second guide groove is provided in one of the second sliding aid 583 and the connecting rod member 562, the second guide rail is provided in the other of the second sliding aid 583 and the connecting rod member 562, and the second guide rail is slidably accommodated in the second guide groove; the friction resistance between the second sliding rail and the inner surface of the second sliding groove is greater than the friction resistance between the second guide rail and the inner surface of the second guide groove, the length direction of the first sliding groove is parallel to the length direction of the second sliding groove, and the length direction of the first sliding rail is parallel to the length direction of the second sliding rail. In this embodiment, a second slide groove 5552 is provided at one end of the connecting member 555, a second slide rail 5831 is provided on one side of the second slide assisting member 583, and the second slide rail 5831 can be slidably inserted in the second slide groove 5552; ​​a second guide groove 5833 is provided on the side of the second slide assisting member 583 away from the second slide rail 5831, and a second guide rail 5625 is provided on the side of the end of the connecting rod member 562 away from the base 53, and the first guide rail 5620 and the second guide rail 5625 are respectively provided on opposite sides of the connecting rod member 562, and the length direction of the first guide rail 5620 is parallel to the length direction of the second guide rail 5625.

[0076] like Figure 3-Figure 14As shown, the support mechanism 52 includes a middle support member 521 and two side support members 523 located on opposite sides of the middle support member 521. The two side support members 523 are movably connected to two rotating mechanisms 55 and linkage mechanisms 56, respectively. The side support members 523 rotate relative to the middle support member 521 through the rotating mechanisms 55 and linkage mechanisms 56. The back of the flexible screen 30 is attached to the front of the middle support member 521 and the side support member 523. The side rotating mechanism 55 and the connecting rod member 562 on one side rotate relative to the base 53, and the side support member 523 and the connecting rod member 562 on the other side rotate synchronously relative to the base 53 through the linkage mechanism 56, so as to realize the synchronous unfolding or synchronous bending of the support mechanism 52, that is, to realize the synchronous folding or synchronous unfolding of the folding device 50. The middle support member 521 is a strip-shaped connecting piece, and connecting holes 5212 are respectively provided at opposite ends of the front side of the connecting piece. The locking piece passes through the connecting holes 5212 and is connected to the base 53, so that the middle support member 521 is connected to the base 53. Each side support member 523 includes a strip-shaped hinge body and a connecting area 5232 arranged on the back side of the hinge body. In this embodiment, the back side 5231 of the hinge body is provided with two connecting areas 5232, and the two connecting areas 5232 are located at opposite ends of the hinge body. The connecting areas 5232 are used to connect the corresponding rotating mechanism 55 and the connecting rod 562. Each connecting area 5232 includes a pair of first connecting parts 5233 and a second connecting part 5236 spaced apart from each other, and the first connecting part 5233 is arranged on a side away from the middle support member 521. In this embodiment, each second connecting part 5236 is located between the corresponding pair of first connecting parts 5233. Each pair of first connecting parts 5233 is provided with a pair of arc-shaped rotating grooves 5234, and the axes of the pair of rotating grooves 5234 are collinear. The second connecting part 5236 is provided with an arc-shaped adjusting groove 5237, and the middle part of the adjusting groove 5237 is bent toward the side away from the hinge body. The adjusting groove 5237 includes a first positioning section 5237a and a second positioning section 5237b located at opposite ends thereof, and the first positioning section 5237a is closer to the middle support member 521 than the second positioning section 5237b. The back shell 59 is a bar frame, and connecting parts 592 are respectively provided at opposite ends of the front of the back shell 59, and the bases 53 of the two folding aid components 51 are respectively connected to the two connecting parts 592 of the back shell 59. The connecting part 592 includes a plurality of connecting columns 594, and each connecting column 594 is provided with a connecting hole 5942 along its axial direction.

[0077] The connecting member 555 is provided with a position-avoiding groove 5557. Specifically, the front end of the connecting member 555 away from the positioning tube 5553 is provided with the position-avoiding groove 5557. The opposite sides of the position-avoiding groove 5557 respectively penetrate the opposite sides of the connecting member 555. The first slide groove 5550 and the second slide groove 5552 are respectively provided on the opposite sides of the connecting member 555 at the position-avoiding groove 5557. The opposite ends of the first slide groove 5550 respectively penetrate the opposite sides of the connecting member 555. The opposite ends of the second slide groove 5552 respectively penetrate the opposite sides of the connecting member 555. The connecting member 555 is rotatably connected with the corresponding side support member 523 through the cooperation of the rotation groove and the rotation rail. The rotation groove is provided on one of the side support member 523 and the connecting member 555. The rotation rail is provided on the other of the side support member 523 and the connecting member 555. In this embodiment, the connecting member 555 is provided with rotation rails 5556 at opposite ends, and the side support member 523 is provided with a rotation groove 5234. The two rotation rails 5556 are respectively rotatably accommodated in the rotation groove 5234, so that the side support member 523 is rotatably connected to the connecting member 555.

[0078] In some embodiments, the connecting member 555 is provided with rotation grooves at two opposite ends, and the side support member 523 is provided with rotation rails, which are rotatably accommodated in the corresponding rotation grooves, so that the side support member 523 is rotatably connected to the connecting member 555.

[0079] like Figure 13-14 and Figure 17-Figure 18As shown, the first two ends of the first guide groove 5813 are respectively provided with a first positioning block 5814 and a second positioning block 5816, and the first guide rail 5620 is provided with a first stop block 5620a, the first stop block 5620a is located between the first positioning block 5814 and the second positioning block 5816, and the first stop block 5620a can push the first positioning block 5814 or the second positioning block 5816, so that the first sliding member 581 slides relative to the connecting member 555; the second two ends of the second guide groove 5833 are respectively provided with a third positioning block 5834 and a fourth positioning block 5836, and the second guide rail 5625 is provided with a second stop block 5625a, the second stop block 5625a is located between the third positioning block 5834 and the fourth positioning block 5836, and the second stop block 5625a can push the third positioning block 5834 or the fourth positioning block 5836, so that the second sliding member 583 slides relative to the connecting member 555. Specifically, the first slide member 581 includes a first slide portion 5810, a first slide rail 5811 is disposed on one side of the first slide portion 5810, and a first guide groove 5813 is disposed on the other side of the first slide portion 5810; the second slide member 583 includes a second slide portion 5830, a second slide rail 5831 is disposed on one side of the second slide portion 5830, and a second guide groove 5833 is disposed on the other side of the second slide portion 5830. Optionally, the first slide portion 5810 is a first rectangular block, the first slide rail 5811 and the first guide groove 5813 are respectively disposed on two opposite sides of the first rectangular block; the second slide portion 5830 is a second rectangular block, the second slide rail 5831 and the second guide groove 5833 are respectively disposed on two opposite sides of the second rectangular block.

[0080] Optionally, the first positioning block 5814 is farther away from the base 53 than the second positioning block 5816, and the third positioning block 5834 is farther away from the base 53 than the fourth positioning block 5836; when the folding device is in a flattened state, the first stop slide block 5620a abuts against the first positioning block 5814, and the second stop slide block 5625a abuts against the third positioning block 5834; when the folding device is in a folded state, the first stop slide block 5620a abuts against the second positioning block 5816, and the second stop slide block 5625a abuts against the fourth positioning block 5836.

[0081] Optionally, the second damping member 585 includes a damping portion 5852 and a positioning portion 5854 connected to the damping portion 5852, the damping portion 5852 is used to abut the first slide member 581 or the second slide member 583, and the positioning portion 5854 is used to connect to the connecting member 555. Specifically, the damping portion 5852 is a strip plate, the positioning portion 5854 is a positioning sheet, and the two opposite ends of the strip plate are respectively provided with positioning sheets, the second damping member 585 can be accommodated in the first guide groove 5813 of the first slide member 581, and the two positioning portions 5854 are connected to the first slide member 581; the second damping member 585 can be accommodated in the second guide groove 5833 of the second slide member 583, and the two positioning portions 5854 are connected to the second slide member 583. In this embodiment, the second damping member 585 is an elastic sheet.

[0082] like Figure 13-14 and Figure 19-22 As shown, the connecting rod 562 includes a sliding portion 5623 that can be slidably inserted into the avoidance groove 5557, a first sliding aid 581 is provided between one side of the sliding portion 5623 and the connecting member 555, and a second sliding aid 583 is provided between the other side of the sliding portion 5623 and the connecting member 555; the avoidance groove 5557 of the connecting member 555 faces the inner side surface of the first sliding aid 581 and one of the first sliding aid 581 is provided with a first slide rail 5811, and the other is provided with a first slide groove 5550, the first slide rail 5811 is slidably accommodated in the first slide groove 5550, one of the first sliding aid 581 and the sliding portion 5623 is provided with a first guide rail 5620, and the other is provided with a first guide Slot 5813, the first guide rail 5620 is slidably accommodated in the first guide groove 5813; the avoidance groove 5557 of the connecting member 555 faces the inner side surface of the second sliding auxiliary member 583 and one of the second sliding auxiliary members 583 is provided with a second slide rail 5831, and the other is provided with a second slide groove 5552, the second slide rail 5831 is slidably accommodated in the second slide groove 5552, the second sliding auxiliary member 583 and one of the sliding portion 5623 is provided with a second guide rail 5625, and the other is provided with a second guide groove 5833, and the second guide rail 5625 is slidably accommodated in the second guide groove 5833; the first slide rail 5811, the first guide rail 5620, the second slide rail 5831 and the second guide rail 5625 are parallel to each other.

[0083] Optionally, the first sliding member 581 further includes a first connecting portion 5817 connected to the first sliding portion 5810, the second sliding member further includes a second connecting portion 5837 connected to the second sliding portion 5830, the sliding portion 5623 is located between the first sliding portion 5810 and the second sliding portion 5830, the first connecting portion 5817 is connected to the second connecting portion 5837, the first sliding portion 5810 and the connecting member 555 are connected through the cooperation of the first slide rail 5811 and the first slide groove 5550, and the first The sliding aid portion 581 and the sliding portion 5623 are connected via the cooperation of the first guide rail 5620 and the first guide groove 5813, the second sliding aid portion 5830 and the connecting member 555 are connected via the cooperation of the second slide rail 5831 and the second slide groove 5552, the second sliding aid portion 5830 and the sliding portion 5623 are connected via the cooperation of the second guide rail 5625 and the second guide groove 5833, and the first slide rail 5811, the first guide rail 5620, the second slide rail 5831 and the second guide groove 5625 are coplanar.

[0084] Optionally, the friction resistance between the second slide rail 5831 and the inner surface of the second slide groove 5552 is greater than the friction resistance between the second guide rail 5625 and the inner surface of the second guide groove 5833 .

[0085] The connecting shaft 561 includes a shaft body 5610 and a connecting cap 5612 located at one end of the shaft body 5610. A positioning portion 5613 is provided at the shaft body 5610 near the connecting cap 5612. The connecting rod 562 is fixedly connected to the connecting shaft 561 through the positioning portion 5613. In this embodiment, the positioning portion 5613 is a positioning surface provided on the outer wall of the shaft body 5610 and extending along the axial direction of the shaft body 5610. The connecting cap 5612 is used to be rotatably connected to the base 53; the end of the shaft body 5610 away from the connecting cap 5612 is provided with a clamping groove 5616, which is located on the outer peripheral wall of the shaft body 5610 and is arranged in a circle along the circumference of the shaft body 5610.

[0086] The connecting rod 562 further comprises a sleeve 5622, a sliding portion 5623 is connected to the outer peripheral wall of the sleeve 5622, the sleeve 5622 is used to be sleeved on the shaft body 5610, and a driving gear 5621 is provided on the outer peripheral wall of the sleeve 5622. The driving gear 5621 is located on the side of the sleeve 5622 away from the sliding portion 5623, and the axis of the driving gear 5621 is colinear with the axis of the sleeve 5622. In this embodiment, the rotation angle of the teeth of the driving gear 5621 arranged along the circumference of the sleeve 5622 is 90 degrees. The sleeve 5622 has a waist-shaped shaft hole 5624, and the sleeve 5622 can be positioned on the positioning portion 5613 after the connecting shaft 561 is inserted into the shaft hole 5624 of the sleeve 5622. The first guide rail 5620 and the second guide rail 5625 are respectively disposed on two opposite sides of the sliding portion 5623 . Both the first guide rail 5620 and the second guide rail 5625 extend along the length direction of the sliding portion 5623 .

[0087] The connecting rod 562 is movably connected to the corresponding side support 523 through the cooperation of the adjustment slot and the adjustment shaft, and the axis of the adjustment shaft is parallel to the axis direction of the connecting shaft 561; the adjustment slot is provided in one of the side support 523 and the connecting rod 562, and the adjustment shaft is provided in the other of the side support 523 and the connecting rod 562. In this embodiment, the side support 523 is provided with an adjustment slot, and an adjustment shaft 5628 is provided at one end of the sliding part 5623 away from the connecting shaft 561, and the adjustment shaft 5628 is rotatably and slidably penetrated in the adjustment slot.

[0088] In this embodiment, the gear assembly 564 includes two interlocking gears 5642 meshing with each other, and the driving gears 5621 of the two connecting rods 562 mesh with the two interlocking gears 5642 respectively, and the pitch circle diameter of the interlocking gear 5642 is smaller than the pitch circle diameter of the driving gear 5621, and the number of teeth arranged in one circle of the interlocking gear 5642 is less than the number of teeth arranged in one circle of the driving gear 5621. Under a certain width and height space of the connecting shaft 561, the pitch circle diameter of the driving gear 5621 is increased by setting two interlocking gears 5642 between the two connecting shafts 561, so that the outer diameter of the first cam 5720 can be increased, so that a larger friction torque can be provided between the first cam 5720 and the second cam 5730, and the fatigue wear of the first cam 5720 can be reduced, thereby extending the service life of the first cam 5720. The gear assembly 564 also includes two rotating shafts 5644, and the two interlocking gears 5642 are fixedly sleeved on the middle parts of the two rotating shafts 5644 respectively.

[0089] The linkage mechanism 56 also includes a fixing member 565 sleeved on the connecting shaft 561, and the limiting mechanism 57 also includes a positioning member 576. The fixing member 565 is connected to one end of the two connecting shafts 561, and the positioning member 576 is connected to the other opposite end of the two connecting shafts 561; the connecting rod member 562, the gear assembly 564, the push member 572, the supporting member 573 and the elastic member 575 are located between the fixing member 565 and the positioning member 576. Specifically, the first guide slide holes 5765 are respectively provided at the opposite ends of the positioning member 576, the fixing member 565 is a rectangular positioning piece, and the second guide slide holes 5652 are respectively provided at the opposite ends of the fixing member 565, and the shaft bodies 5610 of the two connecting shafts 561 are respectively penetrated through the two first guide slide holes 5765 and the two second guide slide holes 5652, and the connecting shaft 561 can rotate in the first guide slide holes 5765 and the second guide slide holes 5652, and the fixing member 565 and the positioning member 576 can only slide along the axial direction of the two connecting shafts 561. Two first support holes 5654 are provided in the middle of the fixing member 565 between the two second guide slide holes 5652, and the axis of the second guide slide hole 5652 is parallel to the axis of the first support hole 5654; ​​and the two rotating shafts 5644 are respectively rotatably inserted into the first support holes 5654. A positioning portion 5656 is provided on the side of the fixing member 565 facing the connecting rod 562. The connecting rod 562 includes a first limiting surface 5626 and a second limiting surface 5627. When the two connecting rods 562 are folded relative to the base 53, the positioning portion 5656 abuts against the first limiting surface 5626; when the two connecting rods 562 are flattened relative to the base 53, the positioning portion 5656 abuts against the second limiting surface 5627. Specifically, a notch is provided around the shaft hole 5624 at one end of the sleeve 5622 away from the push member 572. The first limiting surface 5626 and the second limiting surface 5627 are two opposite end surfaces of the notch. The first limiting surface 5626 is further away from the sliding portion 5623 than the second limiting surface 5627. A positioning rod 5657 is provided on the side of the fixing member 565 away from the positioning portion 5656. The positioning rod 5657 is used to be positioned on the base 53.

[0090] The limiting mechanism 57 includes a push piece 572, a holding piece 573, an elastic piece 575 and a friction assembly 577 arranged at one end of the sleeve 5622. The push piece 572, the holding piece 573 and the friction assembly 577 are sleeved on the connecting shaft 561. The elastic piece 575 provides an elastic force to make the holding piece 573 and the push piece 572 push against each other. When the rotating mechanism 55 rotates relative to the base 53, the connecting rod 562 and the corresponding connecting shaft 561 rotate together around the axis of the connecting shaft 561, so that the push piece 572 rotates relative to the holding piece 573. The friction torque between the push piece 572 and the holding piece 573 and the friction resistance of the friction assembly 577 position the connecting rod 562 and the rotating mechanism 55 relative to the base 53. The support mechanism 52 is folded or unfolded along with the folding-assisting component 51. The friction torque between the push member 572 and the support member 573, the friction resistance of the friction component 577, and the friction resistance between the connecting member 555 and the first sliding member 581 and the second sliding member 283 can position the support mechanism 52 during the folding or unfolding process to achieve the positioning of the two frames 21 to a specific angle relative to the base 53, thereby allowing the electronic device 100 to have a hovering effect.

[0091] The push member 572 includes a first cam 5720 connected to one end of the sleeve 5622, and the first cam 5720 is coaxial with the sleeve 5622; the support member 573 includes a second cam 5730, and the first cam 5720 and the second cam 5730 are rotatably engaged with each other. When the first cam 5720 rotates relative to the second cam 5730, the first cam 5720 rotatably pushes the second cam 5730 to slide away from or close to the first cam 5720, and the elastic member 575 is squeezed. The friction torque between the push member 572 and the support member 573 and the friction resistance between the connecting member 555 and the first sliding member 581 and the second sliding member 283 can position the connecting rod member 562 relative to the base 53 and the rotating mechanism 55. Specifically, the friction torque between the first cam 5720 and the second cam 5730 can limit the connecting rod 562 to a specific angle relative to the abutting member 573, and the friction resistance between the connecting member 555 and the first sliding member 581 and the second sliding member 283 can position the connecting rod 562 relative to the connecting member 555. In this embodiment, each connecting rod 562 is connected to the abutting member 572, and the two first cams 5720 are respectively sleeved on the two connecting shafts 561. The first cam 5720 includes a concave-convex surface provided at one end of the sleeve 5622, and the concave-convex surface includes a first protruding portion 5724 and a first concave portion 5725, and the first protruding portion 5724 and the first concave portion 5725 are sequentially arranged at intervals along the circumference of the sleeve. The number of the first protrusions 5724 and the number of the first recesses 5725 can be set as needed, such as the first cam 5720 can include one first protrusion 5724 and one first recess 5725, two first protrusions 5724 and two first recesses 5725, three first protrusions 5724 and three first recesses 5725, or four first protrusions 5724 and four first recesses 5725. In this embodiment, the elastic member 575 includes a spring sleeved on each connecting shaft 561. Each linkage gear 5642 is non-rotatably sleeved on the corresponding rotating shaft 5644. Each connecting rod member 562 is provided with a driving gear 5621 meshing with the corresponding linkage gear 5642, and the diameter of the pitch circle of the driving gear 5621 is greater than the outer diameter of the first cam 5720. The supporting member 573 includes two second cams 5730, which are respectively slidably mounted on the two connecting shafts 561. The ends of the two connecting rods 562 away from the first cams 5720 are respectively connected to the two connecting members 555. The connecting rods 562 rotate relative to the base 53 with the rotating mechanism 55 to drive the connecting shaft 561 and the first cam 5720 to rotate relative to the second cam 5730.

[0092] like Fig.21 and Fig. 22As shown, the supporting member 573 also includes a connecting portion 5732, two second cams 5730 are arranged at opposite ends of the connecting portion 5732, the elastic member 575 is located between the positioning member 576 and the supporting member 573, the connecting shaft 561 can rotate relative to the supporting member 573, and the supporting member 573 can slide along the axial direction of the connecting shaft 561. Specifically, the second cam 5730 includes a circular sleeve and a concave-convex surface arranged at one end of the sleeve, the concave-convex surface includes a second protrusion 5734 and a second recessed portion 5735, and the second protrusion 5734 and the second recessed portion 5735 are arranged in sequence and spaced apart along the circumference of the sleeve; the number of the second protrusions 5734 and the number of the second recessed portions 5735 on the second cam 5730 are consistent with the number of the first recessed portions 5725 and the number of the first protrusions 5724 on the first cam 5720, so that the first protrusion 5724 cooperates with the second recessed portion 5735, and the second protrusion 5734 cooperates with the first recessed portion 5725. The supporting member 573 is provided with a second supporting hole 5736. Specifically, the connecting portion 5732 is provided with two second supporting holes 5736. The axes of the second supporting holes 5736 are parallel to the axis of the second cam 5730. The rotating shaft 5644 of the linkage gear 5642 is respectively penetrated through the first supporting hole 5654 and the second supporting hole 5736 at two opposite ends.

[0093] The support member 573 and the positioning member 576 clamp the elastic member 575. The positioning member 576 includes a rectangular guide slide 5761 and an extension portion 5763 provided in the middle of one side of the guide slide 5761. The first guide slide holes 5765 are respectively provided at opposite ends of the guide slide 5761, and the opposite end surfaces of the guide slide 5761 are set as arc surfaces. The extension direction of the extension portion 5763 is parallel to the axis of the first guide slide hole 5765, and the end surface of the extension portion 5763 away from the guide slide 5761 is provided with two avoidance holes 5767. Preferably, the side of the guide slide 5761 away from the extension portion 5763 is provided with a first anti-slip portion 5768 around the first guide slide hole 5765. Specifically, the first anti-slip portion 5768 can be, but is not limited to, a convex portion, a hole or a rough surface provided on the guide slide 5761.

[0094] The friction assembly 577 includes a first friction member 5770, a gasket 578, a second friction member 5775, and two C-shaped buckles 579. The gasket 578 is sleeved on the connecting shaft 561. The first friction member 5770 and the second friction member 5775 are both connected to the connecting shaft 561, and the first friction member 5770 and the second friction member 5775 are respectively located on opposite sides of the gasket 578. The C-shaped buckle 579 is used to be clamped in the clamping groove 5616 of the connecting shaft 561. The first friction member 5770 abuts against the positioning member 576. When the connecting shaft 561 rotates relative to the base 53, the first friction member 5770 and the second friction member 5775 rotate together with the connecting shaft 561. There is friction resistance between the first friction member 5770 and the positioning member 576 and the gasket 578, and there is friction resistance between the second friction member 5775 and the gasket 578. Specifically, the first friction member 5770 is a circular friction plate, and a first positioning hole 5772 is provided in the middle of the friction plate. The first friction member 5770 is fixedly connected to the connecting shaft 561 through the first positioning hole 5772. The side of the positioning member 576 facing the first friction member 5770 is provided on the first anti-slip portion 5768, and / or the side of the first friction member 5770 facing the positioning member 567 is provided with a second anti-slip portion 5774. In this embodiment, the two opposite sides of the first friction member 5770 are respectively provided with the second anti-slip portion 5774, and the second anti-slip portion 5774 can be but not limited to a convex portion, a hole or a rough surface provided on the first friction member 5770; in this embodiment, the two opposite sides of the first friction member 5770 are respectively provided with a plurality of holes, and these holes can increase the friction resistance of the first friction member 5770. In this embodiment, the first anti-slip portion 5768 is provided on the side of the positioning member 576 facing the first friction member 5770, and the second anti-slip portion 5774 is provided on the side of the first friction member 5770 facing the positioning member 576. In some embodiments, the first anti-slip portion 5768 on the positioning member 576 can be omitted, and only the second anti-slip portion 5774 on the side of the first friction member 5770 facing the positioning member 576 is retained; or the second anti-slip portion 5774 on the side of the first friction member 5770 facing the positioning member 576 can be omitted, and only the first anti-slip portion 5768 on the positioning member 576 is retained.

[0095] The gasket 578 is slidably sleeved on the two connecting shafts 561, and the first friction member 5770 is between the gasket 578 and the positioning member 576; when the first friction member 5770 rotates with the connecting shaft 561, there is friction resistance between the first friction member 5770 and the positioning member 576 and between the first friction member 5770 and the gasket 578, and there is friction resistance between the second friction member 5775 and the gasket 578. Specifically, the gasket 578 is rectangular, and the opposite ends of the gasket 578 are respectively set as arc surfaces. The side of the gasket 578 facing the first friction member 5770 is provided with a third anti-slip portion 5784. In this embodiment, the opposite ends of the gasket 578 are respectively provided with through holes 5782, and the opposite sides of the gasket 578 are provided with a third anti-slip portion 5784 around each through hole 5782. The third anti-slip portion 5784 can be, but is not limited to, a convex portion, a hole or a rough surface, etc. provided on the first friction member 5770. In this embodiment, the third anti-slip part 5784 is provided on the opposite sides of the gasket 578 around each through hole 5782. The side of the gasket 578 facing the first friction member 5770 is provided with the third anti-slip part 5784, and the side of the first friction member 5770 facing the gasket 578 is provided with the second anti-slip part 5774.

[0096] The gasket 578 and the second friction member 5775 abut against each other. When the second friction member 5775 rotates with the connecting shaft 561, there is friction resistance between the second friction member 5775 and the gasket 578. Specifically, the second friction member 5775 is a circular friction plate, and a second positioning hole 5776 is provided in the middle of the second friction member 5775. The second friction member 5775 is fixedly connected to the connecting shaft 561 through the second positioning hole 5776. The side of the gasket 578 facing the second friction member 5775 is provided with a third anti-slip portion 5784, and / or the side of the second friction member 5775 facing the gasket 578 is provided with a fourth anti-slip portion 5778. In this embodiment, the second friction member 5775 is provided with a fourth anti-slip portion 5778 on two opposite sides, and the fourth anti-slip portion 5778 can be, but is not limited to, a convex portion, a hole or a rough surface provided on the second friction member 5775. In this embodiment, two opposite sides of the second friction member 5775 are respectively provided with a plurality of holes, which can increase the friction resistance of the second friction member 5775. The side of the gasket 578 facing the second friction member 5775 is provided on the third anti-slip portion 5784, and the side of the second friction member 5775 facing the gasket 578 is provided with a fourth anti-slip portion 5778.

[0097] Please also read Figure 9-Figure 14 and Figure 19-Figure 26When assembling the folding assisting assembly 51, the rotating portion 552 of one of the rotating members 550 is placed between a first rotating assisting member 541 and a second rotating assisting member 543, so that the first rotating rail 5520 of the rotating member 550 can be rotatably accommodated in the first rotating groove 5411 of the first rotating assisting member 541, the first stop block 5524 is located between the first abutting block 5415 and the second abutting block 5416, the second rotating rail 5522 of the rotating member 550 can be rotatably accommodated in the second rotating groove 5431 of the second rotating assisting member 543, the second stop block 5526 is located between the third abutting block 5435 and the fourth abutting block 5436, and the first connecting portion 5417 is connected to the second connecting portion 543 7 are connected to each other; the rotating part 552 of another rotating member 550 is placed between another first rotation-assisting member 541 and another second rotation-assisting member 543, so that the first rotating rail 5520 of the rotating member 550 is rotatably accommodated in the first rotating groove 5411 of the first rotation-assisting member 541, the first stop block 5524 is located between the first abutting block 5415 and the second abutting block 5416, the second rotating rail 5522 of the rotating member 550 is rotatably accommodated in the second rotating groove 5431 of the second rotation-assisting member 543, the second stop block 5526 is located between the third abutting block 5435 and the fourth abutting block 5436, and the first connecting part 5417 is connected to the second connecting part 5437. Two of the first damping members 545 are positioned in the first arc groove 531 of the first seat body 533, and the other two first damping members 545 are positioned in the two second arc grooves 536 of the second seat body 535. Place the two first rotation-assisting members 541 and the two second rotation-assisting members 543 between the first seat body 533 and the second seat body 535, so that the two first rotation-assisting members 541 are respectively accommodated in the two first receiving grooves 530 of the first seat body 533, and the two first circular arc rails 5410 are respectively rotatably accommodated in the two first circular arc grooves 531, and the two second rotation-assisting members 543 are respectively accommodated in the two second receiving grooves 537 of the second seat body 535, and the two second circular arc rails 5430 are respectively rotatably accommodated in the two second circular arc grooves 536; clamp the clamping column 5331 of the first seat body 533 to the clamping hole 5351 of the second seat body 535, so that the first seat body 533 is fixedly connected to the second seat body 535. At this time, the first stop block 5414 is located between the corresponding first stop block 5333 and the second stop block 5335, and the first stop block 5414 presses against the corresponding first damping member 545; the second stop block 5434 is located between the corresponding third stop block 5353 and the fourth stop block 5355, and the second stop block 5434 presses against the corresponding second damping member 585.The rotating cylinder 5533 of one of the rotating parts 550 is rotatably accommodated in the receiving groove 5551 of one of the connecting parts 555, and one of the rotating shafts 551 is inserted into the second shaft hole 5555 and the first shaft hole 5534, so that one of the rotating parts 550 is rotatably connected to one of the connecting parts 555; the rotating cylinder 5533 of the other rotating part 550 is rotatably accommodated in the receiving groove 5551 of the other connecting part 555, and the other rotating shaft 551 is inserted into the second shaft hole 5555 and the first shaft hole 5534, so that the other rotating part 550 is rotatably connected to the other connecting part 555.

[0098] Insert the ends of the two connecting shafts 561 away from the connecting caps 5612 into the two second guide sliding holes 5652 of the fixing member 565 respectively until the fixing member 565 stops at the connecting cap 5612; locate the gear assembly 564 between the two connecting rods 562, and the two linkage gears 5642 respectively mesh with the two driving gears 5621; insert the ends of the two connecting shafts 561 away from the connecting caps 5612 into the sleeves 5622 of the two connecting rods 562 respectively, and the two rotating shafts 5644 of the gear assembly 564 are respectively inserted into the two first supporting holes 5654 of the fixing member 565, and the positioning portion 5656 of the fixing member 565 is accommodated in the notch of the corresponding sleeve 5622; at this time, each first cam 5720 and the corresponding driving gear 5621 share the connecting shaft 561, and each positioning portion 5656 is located between the corresponding first limiting surface 5626 and the second limiting surface 5627. The abutting member 573 is sleeved on the two connecting shafts 561 so that the two second cams 5730 of the abutting member 573 can respectively engage with the two first cams 5720 rotatably, and the two rotating shafts 5644 are respectively inserted into the two second supporting holes 5736 of the abutting member 573; the two elastic members 575 are respectively sleeved on the two connecting shafts 561; the ends of the two connecting shafts 561 with the card slots 5616 are respectively inserted into the two first guide sliding holes 5765 of the positioning member 576 until the two rotating shafts 5644 are respectively inserted into the two avoiding holes 5767 of the positioning member 576, so that the elastic member 575 5 is clamped between the abutting member 573 and the positioning member 576; the two first friction members 5770 are respectively sleeved on the two connecting shafts 561, the gaskets 578 are sleeved on the two connecting shafts 561, and then the two second friction members 5775 are respectively sleeved on the two connecting shafts 561. At this time, the gaskets 578 are located between the first friction members 5770 and the second friction members 5775, and the slots 5616 of each connecting shaft 561 expose the side of the corresponding second friction member 5775 away from the positioning member 576; and then the two C-shaped buckles 579 are respectively clamped on the slots 5616 of the two connecting shafts 561. At this time, the two C-shaped buckles 579 respectively press against the sides of the two second friction members 5775 away from the positioning member 576, and the elastic member 575 is in a squeezed state, that is, the elastic member 575 has a pre-elastic force. Each first cam 5720 can be rotatably pressed against the corresponding second cam 5730, and the axial force on the first cam 5720, the second cam 5730 and the friction assembly 577 on each connecting shaft 561 is equal to the pre-elastic force of the elastic member 575.

[0099] The two second damping members 585 are respectively accommodated in the first slide groove 5550 and the second slide groove 5552 of one of the connecting members 555, and the second damping members 585 are fixedly connected to the connecting member 555; the other two second damping members 585 are respectively accommodated in the first slide groove 5550 and the second slide groove 5552 of the other connecting member 555; one of the first sliding aid members 581 and the corresponding second sliding aid member 583 are respectively sleeved on the opposite sides of one of the sliding parts 5623, so that The first guide rail 5620 is slidably accommodated in the first guide groove 5813 of the first sliding auxiliary member 581, and the first stop slide block 5620a is located between the first positioning block 5814 and the second positioning block 5816, the second slide rail 5831 is slidably accommodated in the second guide groove 5833 of the second sliding auxiliary member 583, and the second stop slide block 5625a is located between the third positioning block 5834 and the fourth positioning block 5836, and the first connecting portion 5817 is fixedly connected to the second connecting portion 5837. Another first sliding aid member 581 and a corresponding second sliding aid member 583 are respectively mounted on opposite sides of another sliding portion 5623, so that the first guide rail 5620 is slidably accommodated in the first guide groove 5813 of the first sliding aid member 581, and the first stop slide block 5620a is located between the first positioning block 5814 and the second positioning block 5816, the second slide rail 5831 is slidably accommodated in the second guide groove 5833 of the second sliding aid member 583, and the second stop slide block 5625a is located between the third positioning block 5834 and the fourth positioning block 5836, and the first connecting portion 5817 is fixedly connected to the second connecting portion 5837. The combination of the two linkage mechanisms 56 and the limiting mechanism 57 is placed between the two connecting members 555, and the first slide rail 5811 of the first sliding member 581 and the second slide rail 5831 of the second sliding member 583 on the two connecting rod members 562 are respectively slidably inserted into the first slide groove 5550 and the second slide groove 5552 of the two connecting members 555, and the first slide rail 5811 and the second slide rail 5831 respectively press against the corresponding second damping member 585; the two connecting caps 5612, the two rotating shafts 5644 and the positioning rod 5657 are respectively inserted into the two rotating holes 5352, the two connecting holes 5354 and the fixing hole 5356.

[0100] like Figure 5-Figure 8As shown, when assembling the support mechanism 52 to the folding aid assembly 51, the two folding aid assemblies 51 are placed at opposite ends of the back of the middle support member 521, and a plurality of locking members are respectively passed through a plurality of connecting holes 5212 of the middle support member 521 and locked to the corresponding positioning holes 534 on the base 53; the two side support members 523 are respectively placed on opposite sides of the base 53, and the two rotating rails 5556 of each connecting member 555 are respectively rotatably accommodated in a corresponding pair of rotating grooves 5234, and the adjusting shaft 5628 of the connecting rod member 562 is passed through the corresponding adjusting groove 5237. Then, the opposite ends of the front side of the back shell 59 are respectively connected to the two bases 53, and specifically, a plurality of locking members are respectively passed through a plurality of connecting holes 5942 from the back side of the back shell 59 and fixedly connected to the base 53. When the two side support members 523 are in a fully flattened state, the adjusting shaft 5628 is positioned at the second positioning section 5237b of the corresponding adjusting groove 5237, the positioning portion 5656 abuts against the second limiting surface 5627, the first guide rail 5620 abuts against the corresponding abutting top portion 584, the first stop block 5414 abuts against the second stop block 5335, the second stop block 5434 abuts against the fourth stop block 5355, the first stop slide block 5524 abuts against the second abutting block 5416, and the second stop slide block 5526 abuts against the fourth abutting block 5436, so that the folding device 50 remains in a fully flattened state, and the front sides of the two side support members 523 and the middle support member 521 are coplanar, preventing the side support members 523 from bending back relative to the middle support member 521. When the two side support members 523 are in a fully bent state, the adjusting shaft 5628 is positioned at the first positioning section 5237a of the corresponding adjusting groove 5237, the positioning portion 5656 abuts against the first limiting surface 5626, the first guide rail 5620 abuts against the corresponding abutting top portion 584, the first stop block 5414 abuts against the first stop block 5333, the second stop block 5434 abuts against the third stop block 5353, the first stop slide block 5524 abuts against the first abutting block 5415, and the second stop slide block 5526 abuts against the third abutting block 5435, so that the folding device 50 remains in a fully bent state, and the front sides of the two side support members 523 and the middle support member 521 are surrounded in a teardrop shape to prevent the side support members 523 from further bending relative to the middle support member 521.When the folding assisting assembly 51 is folded, the first rotating rail 5520 and the second rotating rail 5522 rotate along the first rotating groove 5411 and the second rotating groove 5431 respectively in a rotation direction, the first stop block 5524 pushes the first abutting block 5415, and the second stop block 5526 pushes the third abutting block 5435, so that the first auxiliary rotating member 541 and the second auxiliary rotating member 543 rotate together along the rotation direction relative to the base 53 until the first stop block 5414 and the second stop block 5434 are stopped by the first stop block 5333 and the third stop block 5353 respectively; when the folding assisting assembly 51 is folded, the first rotating rail 5520 and the second rotating rail 5522 rotate along the first rotating groove 5411 and the second rotating groove 5431 respectively in a rotation direction, the first stop block 5524 pushes the first abutting block 5415, and the second stop block 5526 pushes the third abutting block 5435. During the folding process of the auxiliary folding component 51, the first rotating rail 5520 and the second rotating rail 5522 rotate along the first rotating groove 5411 and the second rotating groove 5431 respectively in the opposite other rotation direction, the first stop slide 5524 pushes the second push block 5416, and the second stop slide 5526 pushes the fourth push block 5436, so that the first auxiliary rotation member 541 and the second auxiliary rotation member 543 rotate together along the other rotation direction relative to the base 53 until the first stop block 5414 and the second stop block 5434 are stopped by the second stop block 5335 and the fourth stop block 5355 respectively. During the process of flattening the folding aid component 51, the first anti-sliding block 5620a slides along the first guide groove 5813 along a sliding direction, and the first anti-sliding block 5620a pushes the first positioning block 5814, so that the first anti-sliding member 581 slides along the sliding direction relative to the connecting member 555. At the same time, the second anti-sliding block 5625a slides along the second guide groove 5833 along the sliding direction, and the second anti-sliding block 5625a pushes the third positioning block 5834, so that the second anti-sliding member 583 slides along the sliding direction relative to the connecting member 555. During the folding process of the assembly 51, the first anti-sliding block 5620a can slide along the first guide groove 5813 in the opposite other sliding direction, and the first anti-sliding block 5620a pushes the second positioning block 5816, so that the first slide-assisting member 581 slides along the other sliding direction relative to the connecting member 555, and at the same time, the second anti-sliding block 5625a slides along the second guide groove 5822 in the other sliding direction, and the second anti-sliding block 5625a pushes the fourth positioning block 5836, so that the second slide-assisting member 583 slides along the other sliding direction relative to the connecting member 555. Please refer to both. Figure 1-Figure 4, place the installed folding device 50 between the two frames 21, place the side supports 523 on the opposite sides of the folding device 50 in the positioning grooves 216 of the two frames 21 respectively, and fix the connecting member 555 to the corresponding mounting portion 217. Specifically, a plurality of locking members pass through the fixing holes 218 from the back side 212 of the frame 21 and are connected to the connecting member 555. At this time, the front side 211 of the two frames 21, the front side of the middle support member 521 and the front side of the two side supports 523 are coplanar. The back side of the flexible screen 30 is connected to the front side of the two frames 21 and the front side of the folding device 50, the bendable area 31 faces the folding device 50, and the two non-bending areas 33 face the front side of the two frames 21 respectively.

[0101] When the flexible screen 30 is in a flattened state, the first cam 5720 and the second cam 5730 fit against each other, the first stop block 5414 abuts against the corresponding first damping member 545, the second stop block 5434 abuts against the corresponding second damping member 585, the first stop slider 5524 abuts against the second abutting block 5416, the second stop slider 5526 abuts against the fourth abutting block 5436, the first stop slider 5620a and the second stop slider 5625a abut against the corresponding second damping member 585 respectively, the elastic member 575 has a pre-elastic force and pushes the supporting member 573 and the positioning member 576, so that the first friction member 5770, the positioning member 576, the gasket 578, the second friction member 5775 and the C-shaped buckle 579 abut against each other to limit the support mechanism 52 to remain in a flattened state, and the angle between the sliding portions 5623 of the two connecting rod members 562 is 180 degrees. Since the front side of the middle support member 521 is a complete surface and there is no step difference in the middle support member 521, the flexible screen 30 will not be impacted by the step difference when flattened, and the flexible screen 30 will not have defects such as color dots and bright spots, thereby ensuring the reliability of the flexible screen 30. At the same time, it also improves the touch feel of the flexible screen 30 and enhances the user experience.

[0102] Please also read Figure 1-Figure 4 and Figures 27 to 39When 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 rotating mechanism 55 connected to the two frames 21 rotates in a direction close to each other, and the folding device 50 is bent through the two folding-assisting components 51, and the bendable area 31 of the flexible screen 30 is bent along the supporting mechanism 52. Specifically, if a bending force is applied to one of the frames 21, the one of the frames 21 drives the corresponding rotating mechanism 55 to rotate relative to the base 53 toward the side close to the flexible screen 30, and the first rotating rail 5520 and the second rotating rail 5522 of the rotating member 550 rotate along the first rotating groove 5411 and the second rotating groove 5431 in the first rotation direction respectively; at the same time, the rotating mechanism 55 drives the corresponding connecting rod member 562 to rotate along the axis of the connecting shaft 561 relative to the base 53 toward the side close to the flexible screen 30 in the first rotation direction, and the first guide rail 5620 and the second guide rail 5625 of the connecting rod member 562 are respectively on the corresponding first sliding-assisting member 58 1 and the corresponding second guide groove 5833 of the second slide-assisting member 583 slide in the first direction, the sleeve 5622 of the connecting rod member 562, the connecting shaft 561, the driving gear 5621 and the push member 572 rotate along the axis of the corresponding connecting shaft 561 in the first rotation direction, the rotating driving gear 5621 drives the other driving gear 5621 to rotate in the second rotation direction through the gear combination 564, and the rotation of the other driving gear 5621 drives the corresponding connecting shaft 561, the sleeve 5622, the push member 572 and the sliding part 5623 to rotate in the second rotation direction, so that the two connecting rods of the linkage mechanism 56 Components 562 are synchronously brought close to each other, and the first rotation direction is opposite to the second rotation direction; the rotating part 552 continues to rotate in the first rotation direction until the first stop block 5524 and the second stop block 5526 respectively push the first abutting block 5415 and the third abutting block 5435, so as to drive the first auxiliary rotating component 541 and the second auxiliary rotating component 543 to rotate in the first rotation direction relative to the base 53, until the first stop block 5414 and the second stop block 5434 respectively abut against the corresponding first stop block 5333 and the third abutting block 5435; at the same time, the other rotating part 552 continues to rotate in the second rotation direction until the first stop block 5524 and the second stop block 5526 pushes against the first abutting block 5415 and the third abutting block 5435 respectively, so as to drive the first rotation-assisting member 541 and the second rotation-assisting member 543 to rotate relative to the base 53 in the second rotation direction, until the first rotation-stopping block 5414 and the second rotation-stopping block 5434 respectively abut against the corresponding first stop block 5333 and the third abutting block 5435; at the same time, the connecting rod 562 continues to slide along the first direction until the first stop block 5620a and the second stop block 5625 push against the second positioning block 5816 and the fourth positioning block 5836 respectively, so as to drive the first slide-assisting member 581 and the second slide-assisting member 583 to slide relative to the connecting member 555 along the first direction;At the same time, the pushing member 572 on each connecting rod member 562 rotates relative to the supporting member 573, so that the first cam 5720 of the pushing member 572 rotationally pushes the second cam 5730, and the supporting member 573 slides axially along the connecting shaft 561 to squeeze the elastic member 575. The elastic member 575 elastically pushes the positioning member 576 to clamp the first friction member 5770 between the gasket 578 and the positioning member 576 and the first friction member 5770 between the gasket 578 and the C-shaped buckle 579. The first friction member 5770 and the second friction member 5775 rotate relative to the gasket 578 and the positioning member 576 along the corresponding connecting shaft 561. During the bending process of the linkage mechanism 56, the rotating part 552 of the rotating member 550 rotates relative to the base 53 through the cooperation of the circular arc track and the corresponding circular arc groove, the connecting part 553 of the rotating member 550 is rotatably connected with the corresponding connecting member 555 along the corresponding rotating shaft 551, the adjusting shaft 5628 rotates and slides from the second positioning section 5237b to the first positioning section 5237a in the corresponding adjusting groove 5237, and the two connecting rods 562 rotate along the axis of the corresponding connecting shaft 561 and approach each other, so as to realize the mutual approach of the two side support members 523, so that the folding device 50 is in a folded state, and the bendable area 31 of the flexible screen 30 is bent with the folding device 50 until the front faces of the two non-bending areas 33 of the flexible screen 30 are attached to each other, and the bendable area 31 is bent into a water drop shape, thereby realizing the seamless folding of the electronic device 100. ;

[0103] During the bending process of the electronic device 100, the friction torque between the first cam 5720 and the second cam 5730, the friction resistance of the first friction member 5770 and the friction resistance of the second friction member 5775, the friction resistance between the first sliding member 581 and the second sliding member 583 and the corresponding second damping member 585, and the friction resistance between the first rotation assisting member 541 and the second rotation assisting member 543 and the corresponding first damping member 545 can limit the rebound of the flexible screen 30, so that the side support member 523 is positioned at a specific angle relative to the middle support member 521, and the two frames 21 can be limited to a specific angle between 180 degrees and 0 degrees. When the two frames 21 are bent to each other and limited at 0 degrees, that is, the two non-bending areas 33 of the flexible screen 30 are parallel to each other; the bendable area 31 of the flexible screen 30 is bent to form a water drop shape, reducing the duty cycle of the bendable area 31 after bending, thereby reducing the overall thickness of the electronic device 100.

[0104] In other bending methods of the electronic device 100, a bending force can also be applied to the two frames 21 at the same time. The two frames 21 respectively drive the two side support members 523 to rotate relative to the side close to the flexible screen 30, and the folding device 50 is used to realize the bending of the electronic device 100.

[0105] When the electronic device 100 needs to be flattened, one of the frames 21 is pulled outwards to make the two rotating mechanisms 55 connected to the two frames 21 rotate in directions away from each other. Specifically, a force of pulling outwards is applied to one of the frames 21 of the electronic device 100, and the one of the frames 21 drives the corresponding rotating mechanism 55 to rotate relative to the base 53 toward the side away from the flexible screen 30, and the first rotating rail 5520 and the second rotating rail 5522 of the rotating member 550 rotate along the first rotating groove 5411 and the second rotating groove 5431 in the third rotation direction; at the same time, the rotating mechanism 55 drives the corresponding connecting rod member 562 to rotate along the axis of the connecting shaft 561 relative to the base 53 toward the side away from the flexible screen 30 in the third rotation direction, and at the same time, the first guide rail 5620 and the second guide rail 5625 of the connecting rod member 562 are respectively in the opposite direction. The first guide groove 5813 of the first slide-assisting member 581 and the corresponding second guide groove 5833 of the second slide-assisting member 583 slide in the second direction, and the sleeve 5622, the connecting shaft 561, the driving gear 5621 and the push member 572 of the connecting rod member 562 rotate along the axis of the corresponding connecting shaft 561 in the third rotation direction, and the rotating driving gear 5621 drives the other driving gear 5621 to rotate in the fourth rotation direction through the gear combination 564, and the rotation of the other driving gear 5621 drives the corresponding connecting shaft 561, the sleeve 5622, the push member 572 and the sliding part 5623 to rotate along the axis of the corresponding connecting shaft 561 in the fourth rotation direction, so that The two connecting rods 562 of the linkage mechanism 56 move away from each other synchronously, and the third rotation direction is opposite to the fourth rotation direction; the rotating part 552 continues to rotate in the third rotation direction until the first stop block 5524 and the second stop block 5526 respectively push the second abutting block 5416 and the fourth abutting block 5436, so as to drive the first auxiliary rotating member 541 and the second auxiliary rotating member 543 to rotate in the third rotation direction relative to the base 53, until the first stop block 5414 and the second stop block 5434 respectively abut against the corresponding second stop block 5335 and the fourth abutting block 5436; at the same time, the other rotating part 552 continues to rotate in the fourth rotation direction until the first stop block 5524 and the second stop block 5434 respectively abut against the corresponding second stop block 5335 and the fourth abutting block 5436. The second stop slide block 5526 pushes the second push block 5416 and the fourth push block 5436 respectively, so as to drive the first auxiliary rotation member 541 and the second auxiliary rotation member 543 to rotate in the fourth rotation direction relative to the base 53 until the first stop block 5414 and the second stop block 5434 respectively push against the corresponding second stop block 5335 and the fourth stop block 5355; at the same time, the connecting rod member 562 continues to slide along the second direction until the first stop slide block 5620a and the second stop slide block 5625a respectively push against the second positioning block 5816 and the fourth positioning block 5836, so as to drive the first auxiliary sliding member 581 and the second auxiliary sliding member 583 to slide along the second direction relative to the connecting member 555.At the same time, the push member 572 on each connecting rod member 562 rotates relative to the supporting member 573, so that the first cam 5720 of the push member 572 rotates to push the second cam 5730, and the elastic member 575 elastically presses between the positioning member 576 and the supporting member 573, so that the positioning member 576 slides along the axial direction of the connecting shaft 561, and the first friction member 5770 is clamped between the gasket 578 and the positioning member 576 and the second friction member 5775 is clamped between the gasket 578 and the C-shaped buckle 579. The first friction member 5770 and the second friction member 5775 move relative to the gasket along the corresponding connecting shaft 561. 578 and the positioning member 576 rotate; during the bending process of the linkage mechanism 56, the rotating portion 552 of the rotating member 550 rotates relative to the base 53, the connecting portion 553 of the rotating member 550 is rotatably connected to the corresponding connecting member 555, the adjusting shaft 5628 rotates and slides in the corresponding adjusting groove 5237, and the two connecting rod members 562 rotate along the axes of the corresponding connecting shafts 561 and move away from each other to achieve the mutual movement of the two side support members 523, so that the folding device 50 is unfolded, and the bendable area 31 of the flexible screen 30 is unfolded with the folding device 50 until the flexible screen 30 is flattened.

[0106] During the flattening process of the electronic device 100, the friction torque between the first cam 5720 and the second cam 5730, the friction torque of the first friction member 5770 and the second friction member 5775, the friction resistance between the first sliding member 581 and the second sliding member 583 and the corresponding second damping member 585, and the friction resistance between the first rotation assist member 541 and the second rotation assist member 543 and the corresponding first damping member 545, can limit the rebound of the flexible screen 30, so that the side support member 523 is positioned at a specific angle relative to the middle support member 521, and the two frames 21 can be limited to a specific angle between 0 degrees and 180 degrees.

[0107] In other bending methods of the electronic device 100, an outward pulling force can also be applied to the two frames 21 at the same time, and the two frames 21 respectively drive the rotating mechanisms 55 on the opposite sides of the base 53 to rotate away from each other, so as to drive the connecting rods 562 on the opposite sides of the base 53 to rotate away from each other, so that the two side support members 523 rotate toward the side away from the flexible screen 30, and the electronic device 100 is unfolded through the folding device 50.

[0108] The folding device 50 of the electronic device 100 of the present invention realizes synchronous bending or unfolding through the folding auxiliary component 51. Since the elastic member 575 can provide a large axial force, there is a large friction torque between the first cam 5720 and the second cam 5730, and the first friction member 5770 and the second friction member 5775 also have a large friction resistance; therefore, the electronic device 100 can be bent and stably limited to a specific angle between 0 degrees and 180 degrees, thereby realizing the hovering function of the whole machine; secondly, since the overall volume of the folding device 50 is relatively small, the internal space occupied by the folding device 50 in the folding shell 20 is reduced, which is not only beneficial to the layout of other components such as the motherboard or battery in the electronic device 100, but also beneficial to the development of miniaturization, and the connection reliability between the various components of the folding device 50 is high, thereby avoiding the displacement of various components of the electronic device 100 when it falls and damaging the flexible screen 30.

[0109] 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 folding device, characterized in that: The folding device comprises: Pedestal; The rotation-assisting assembly comprises a first rotation-assisting member rotatably connected to the base, wherein the first rotation-assisting member and the base are rotationally connected through the cooperation of a first circular arc rail and a first circular arc groove; and The rotating mechanism comprises a rotating member rotatably connected to the first rotation-assisting member, wherein the rotating member and the first rotation-assisting member are rotatably connected via a first rotating groove and a first rotating rail; Among them, the axis of the first arc rail is colinear with the axis of the first rotating rail, the friction resistance of the rotating member relative to the first auxiliary rotating member is smaller than the friction resistance of the first auxiliary rotating member relative to the base; the rotating member can drive the first auxiliary rotating member to rotate relative to the base.

2. The folding device according to claim 1, characterized in that: A receiving space is provided on the front side of the base, the first arc groove is provided on the base and connected to the receiving space, the first arc rail is provided on the first rotation-assisting part, and the first arc rail is rotatably accommodated in the first arc groove; the first rotation groove is provided on the first rotation-assisting part, the first rotation rail is provided on the rotation part, and the first rotation rail is rotatably accommodated in the first rotation groove.

3. The folding device according to claim 2, characterized in that: The base is respectively provided with a first stop block and a second stop block at the opposite ends of the first arc groove, and a first stop block is provided on the first arc rail, and the first stop block is located between the first stop block and the second stop block; when the folding device is in a folded state, the first stop block stops at the first stop block; when the folding device is in a flattened state, the first stop block stops at the second stop block.

4. The folding device according to claim 3, characterized in that: The rotation-assisting assembly further includes a first damping member, which is clamped between the first rotation-assisting member and the base.

5. The folding device according to claim 4, characterized in that: The first damping member is an arc-shaped spring piece, which is accommodated in the first arc groove. The first damping member is positioned on the base or the first anti-rotation block.

6. The folding device according to claim 3, characterized in that: The first rotation-assisting member is respectively provided with a first resisting block and a second resisting block at the opposite ends of the first rotation groove, and a first stop block is provided on the first rotation rail, and the first stop block is located between the first resisting block and the second stop block; when the folding device is in a folded state, the first stop block stops at the first resisting block, and the first rotation-stopping block stops at the first stop block; when the folding device is in an unfolded state, the first stop block stops at the second resisting block, and the first rotation-stopping block stops at the second stop block.

7. The folding device according to claim 6, characterized in that: The first rotating rail can rotate along the first rotating groove in a rotating direction, and the first stopping block pushes the first resisting block, so that the first rotating auxiliary member rotates along the one rotating direction relative to the base until the first stopping block stops at the first stopping block; the first rotating rail can rotate along the first rotating groove in another opposite rotating direction, and the first stopping block pushes the second resisting block, so that the first rotating auxiliary member rotates along the other rotating direction relative to the base until the first stopping block stops at the second stopping block.

8. The folding device according to claim 2, characterized in that: The first rotation-assisting member includes a first rotation-assisting portion, the first arc track is arranged on one side of the first rotation-assisting portion, the first rotation groove is arranged on a side of the first rotation-assisting portion away from the first arc track, and the first arc track is coaxial with the first rotation groove.

9. The folding device according to claim 1, characterized in that: The base includes a first seat body and a second seat body, and the rotation-assisting assembly also includes a second rotation-assisting member, the first rotation-assisting member and the second rotation-assisting member are located between the first seat body and the second seat body, the first rotation-assisting member and the first seat body are rotationally connected by a first circular arc groove and a first circular arc rail, the second rotation-assisting member and the second seat body are rotationally connected by a second circular arc groove and a second circular arc rail, and the first circular arc groove and the second circular arc groove are coaxial; the rotating member includes a rotating part, the rotating part is located between the first rotation-assisting member and the second rotation-assisting member, the rotating part and the first rotation-assisting member are rotationally connected by a first rotating groove and a first rotating rail, the rotating part and the second rotation-assisting member are rotationally connected by a second rotating groove and a second rotating rail, and the first rotating groove and the second rotating groove are coaxial.

10. The folding device according to claim 9, characterized in that: The first rotation-assisting member includes a first rotation-assisting part and a first connecting part connected to the first rotation-assisting part, the second rotation-assisting member includes a second rotation-assisting part and a second connecting part connected to the second rotation-assisting part, the rotating part is located between the first rotation-assisting part and the second rotation-assisting part, the first circular arc rail is arranged on one side of the first rotation-assisting part, the first rotating groove is arranged on a side of the first rotation-assisting part away from the first circular arc rail, the second circular arc rail is arranged on one side of the second rotation-assisting part, the second rotating groove is arranged on a side of the second rotation-assisting part away from the second circular arc rail, and an end of the first connecting part away from the first rotation-assisting part is connected to an end of the second connecting part away from the second rotation-assisting part.

11. The folding device according to claim 1, characterized in that: It also includes a connecting shaft, a connecting rod and an auxiliary sliding component, the connecting shaft is connected to one side of the base, and the axis of the connecting shaft is parallel to the axis of the first circular arc rail; the connecting rod is rotatably connected to the connecting shaft; the rotating mechanism also includes a connecting member, and the end of the rotating member away from the base is rotatably connected to the connecting member, and the auxiliary sliding component includes a first auxiliary sliding member, the first auxiliary sliding member is slidably connected to the connecting member, and the end of the connecting rod away from the base is slidably connected to the first auxiliary sliding member, and the sliding direction of the first auxiliary sliding member relative to the connecting member is consistent with the sliding direction of the connecting rod relative to the first auxiliary sliding member.

12. The folding device according to claim 11, characterized in that: The first sliding member and the connecting member are connected by the cooperation of the first sliding groove and the first sliding rail, the connecting rod member and the first sliding member are connected by the cooperation of the first guide groove and the first guide rail, the friction resistance between the first slide rail and the first sliding groove is greater than the friction resistance between the first guide rail and the first guide groove, and the connecting member can drive the first sliding member to slide relative to the connecting rod member.

13. The folding device according to claim 12, characterized in that: A first positioning block and a second positioning block are respectively provided at opposite ends of the first guide groove, and a first stop block is provided on the first guide rail, and the first stop block is located between the first positioning block and the second positioning block; the first positioning block is farther away from the base than the second positioning block, and when the folding device is in a flattened state, the first stop block abuts against the first positioning block; when the folding device is in a folded state, the first stop block abuts against the second positioning block.

14. The folding device according to claim 13, characterized in that: The first stop slide block can slide along the first guide groove in a sliding direction, and the first stop slide block pushes the first positioning block, so that the first sliding aid member slides relative to the connecting member along the one sliding direction; the first stop slide block can slide along the first guide groove in another opposite sliding direction, and the first stop slide block pushes the second positioning block, so that the first sliding aid member slides relative to the connecting member along the other sliding direction.

15. The folding device according to claim 11, characterized in that: The sliding assistance component also includes a second damping member, which is clamped between the first sliding assistance member and the connecting member, and includes a damping portion that abuts against the first sliding assistance member and a positioning portion connected to the damping portion, and the positioning portion is connected to the connecting member.

16. The folding device according to claim 11, characterized in that: The connecting member is provided with a avoidance groove, the connecting rod member includes a sliding part that can be slidably inserted in the avoidance groove, the sliding aid component also includes a second sliding aid member, the first sliding aid member is provided between one side of the sliding part and the connecting member, and the second sliding aid member is provided between the other side of the sliding part and the connecting member.

17. The folding device according to claim 16, characterized in that: The avoidance groove of the connecting member faces the inner side surface of the first auxiliary sliding member and one of the first auxiliary sliding members is provided with a first slide rail, and the other is provided with a first slide groove, and the first slide rail is slidably accommodated in the first slide groove; the first auxiliary sliding member and one of the sliding parts are provided with a first guide rail, and the other is provided with a first guide groove, and the first guide rail is slidably accommodated in the first guide groove; the avoidance groove of the connecting member faces the inner side surface of the second auxiliary sliding member and one of the second auxiliary sliding members is provided with a second slide rail, and the other is provided with a second slide groove, and the second slide rail is slidably accommodated in the second slide groove, the second auxiliary sliding member and one of the sliding parts are provided with a second guide rail, and the other is provided with a second guide groove, and the second guide rail is slidably accommodated in the second guide groove; the first slide rail, the first guide rail, the second slide rail and the second guide rail are parallel to each other.

18. The folding device according to claim 17, characterized in that: The first sliding member includes a first sliding portion and a first connecting portion connected to the first sliding portion, the second sliding member includes a second sliding portion and a second connecting portion connected to the second sliding portion, the sliding portion is located between the first sliding portion and the second sliding portion, the first connecting portion is connected to the second connecting portion, the first sliding portion and the connecting member are connected via the cooperation of the first slide rail and the first slide groove, the first sliding portion and the sliding portion are connected via the cooperation of the first guide rail and the first guide groove, the second sliding portion and the connecting member are connected via the cooperation of the second slide rail and the second slide groove, the second sliding portion and the sliding portion are connected via the cooperation of the second guide rail and the second guide groove, and the first slide rail, the first guide rail, the second slide rail and the second guide rail are coplanar.

19. A foldable housing, characterized in that: The folding shell includes the folding device according to any one of claims 1 to 18 and two frames, the folding device is located between the two frames, and the two frames are respectively connected to opposite sides of the folding device.

20. An electronic device, characterized in that: The electronic device comprises a flexible screen and a folding shell as claimed in claim 19, wherein the flexible screen is arranged on the folding shell.

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