Folding device, folding shell and electronic equipment

Abstract

The invention provides a folding device which comprises a base, a rotating mechanism, a linkage mechanism and a bendable mechanism, and the rotating mechanism comprises a rotating piece movably connected to the base and a connecting piece rotationally connected to the rotating piece; the linkage mechanism comprises a connecting rod piece rotationally connected to the base, and the end, away from the base, of the connecting rod piece is slidably connected to the connecting piece. The bendable mechanism comprises a side supporting piece, the connecting rod piece and the side supporting piece are connected through cooperation of a first adjusting shaft and a first adjusting groove and cooperation of a second adjusting shaft and a second adjusting groove, and the axis of the first adjusting shaft is parallel to the axis of the second adjusting shaft in a spaced mode. The first adjusting groove and the second adjusting groove are staggered in the thickness direction of the side supporting piece, and when the first adjusting shaft moves along the first adjusting groove, the side supporting piece rotates relative to the base to be bent. When the second adjusting shaft moves along the second adjusting groove, the side supporting piece rotates relative to the base to be flattened. 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 flexible screen supports, and in particular, to a folding device for supporting a flexible screen, a folding housing provided with the folding device, and an electronic device provided with the folding housing. Background Art

[0002] At present, folding electronic products with bendable flexible display screens are becoming increasingly popular among people. The bendable flexible display screens of folding electronic products in the prior art generally use folding devices for support. In order to make folding electronic products thinner and lighter, the size of the folding device is also becoming increasingly miniaturized. Generally, a connecting rod member and a side support member of an existing folding device are movably connected through the cooperation of an adjusting shaft and an adjusting groove. The adjusting shaft is arranged on the connecting rod member, and the adjusting groove is arranged on the back of the side support member. However, in order to form a closed adjusting groove on the side support member, the side support member needs to have a relatively large thickness, resulting in a relatively large overall thickness of the folding device and affecting the overall thickness of the folding electronic product. 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, a rotating mechanism, a linkage mechanism, and a foldable mechanism. The rotating mechanism includes a rotating member and a connecting member. One end of the rotating member is rotatably connected to the base, and the end of the rotating member away from the base is rotatably connected to the connecting member. The linkage mechanism includes a connecting rod member. The connecting rod member is rotatably connected to the base, and the end of the connecting rod member away from the base is slidably connected to the connecting member. The foldable mechanism includes a side support member. The connecting rod member and the side support member are connected through the cooperation of a first adjusting shaft and a first adjusting groove and the cooperation of a second adjusting shaft and a second adjusting groove. The axis of the first adjusting shaft and the axis of the second adjusting shaft are spaced and parallel to each other. The first adjusting groove and the second adjusting groove are offset from each other in the thickness direction of the side support member. Wherein, the movement of the first adjusting shaft along the first adjusting groove can cause the side support member to rotate relative to the base and bend, and the movement of the second adjusting shaft along the second adjusting groove can cause the side support member to rotate relative to the base and flatten.

[0005] The present application also provides a folding housing, which includes a folding device and two frames. The folding device includes a base, a rotating mechanism, a linkage mechanism, and a foldable mechanism. The rotating mechanism includes a rotating member and a connecting member. One end of the rotating member is rotatably connected to the base, and the end of the rotating member away from the base is rotatably connected to the connecting member. The linkage mechanism includes a connecting rod member, which is rotatably connected to the base, and the end of the connecting rod member away from the base is slidably connected to the connecting member. The foldable mechanism includes a side support member. The connecting rod member and the side support member are connected through the cooperation of a first adjustment shaft and a first adjustment groove and the cooperation of a second adjustment shaft and a second adjustment groove. The axis of the first adjustment shaft is parallel to the axis of the second adjustment shaft at an interval, and the first adjustment groove and the second adjustment groove are offset from each other in the thickness direction of the side support member. Among them, the movement of the first adjustment shaft along the first adjustment groove can make the side support member rotate relative to the base to be bent, and the movement of the second adjustment shaft along the second adjustment groove can make the side support member rotate relative to the base to be flattened. 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 housing. The folding housing includes a folding device and two frames. The folding device includes a base, a rotating mechanism, a linkage mechanism, and a foldable mechanism. The rotating mechanism includes a rotating member and a connecting member. One end of the rotating member is rotatably connected to the base, and the end of the rotating member away from the base is rotatably connected to the connecting member. The linkage mechanism includes a connecting rod member, which is rotatably connected to the base, and the end of the connecting rod member away from the base is slidably connected to the connecting member. The foldable mechanism includes a side support member. The connecting rod member and the side support member are connected through the cooperation of a first adjustment shaft and a first adjustment groove and the cooperation of a second adjustment shaft and a second adjustment groove. The axis of the first adjustment shaft is parallel to the axis of the second adjustment shaft at an interval, and the first adjustment groove and the second adjustment groove are offset from each other in the thickness direction of the side support member. Among them, the movement of the first adjustment shaft along the first adjustment groove can make the side support member rotate relative to the base to be bent, and the movement of the second adjustment shaft along the second adjustment groove can make the side support member rotate relative to the base to be flattened. The folding device is located between the two frames, and the two frames are respectively connected to opposite sides of the folding device. The flexible screen is disposed on the folding housing.

[0007] The link member and the side support member of the folding device of the electronic device of the present application are connected through the cooperation of the first adjustment shaft and the first adjustment groove and the cooperation of the second adjustment shaft and the second adjustment groove, so as to expand the dimension in the axial length direction of the adjustment shaft and reduce the dimension in the axial thickness direction of the adjustment shaft, thereby reducing the thickness of the side support member and the overall thickness of the folding device, which is beneficial to reducing the overall thickness of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the implementation. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0009] Figure 1 is a schematic perspective view of an electronic device in an embodiment of the present application;

[0010] Figure 2 is Figure 1 a schematic exploded perspective view of the electronic device in;

[0011] Figure 3 is Figure 2 a further schematic exploded perspective view of the electronic device in;

[0012] Figure 4 is Figure 3 a schematic perspective view of the folding device in;

[0013] Figure 5 is Figure 4 a schematic perspective view of the folding device from another angle in;

[0014] Figure 6 is Figure 4 a schematic exploded perspective view of the folding device in;

[0015] Figure 7 is Figure 5 a schematic exploded perspective view of the folding device in;

[0016] Figure 8 is Figure 6 a schematic exploded perspective view of the bendable mechanism in;

[0017] Figure 9 is Figure 8 a schematic perspective view of the bendable mechanism from another angle in;

[0018] Figure 10 is Figure 6 a schematic exploded perspective view of one of the assisting folding components in;

[0019] Figure 11 is Figure 6 a schematic exploded perspective view of another folding assistance component in

[0020] Figure 12 is Figure 10 a schematic perspective view of the base and the rotating mechanism in

[0021] Figure 13 is Figure 11 a schematic perspective view of the base and the rotating mechanism in

[0022] Figure 14 is Figure 10 an enlarged schematic perspective view of the linkage mechanism and the limiting mechanism in

[0023] Figure 15 is Figure 11 an enlarged schematic perspective view of the linkage mechanism and the limiting mechanism in

[0024] Figure 16 is Figure 14 a schematic exploded perspective view of the linkage mechanism and the limiting mechanism in

[0025] Figure 17 is Figure 16 a schematic exploded perspective view of the linkage mechanism and the limiting mechanism from another perspective in

[0026] Figure 18 is Figure 4 one of the schematic cross-sectional perspective views of the folding assistance component in

[0027] Figure 19 is Figure 4 another schematic cross-sectional perspective view of the folding assistance component in

[0028] Figure 20 is Figure 4 another schematic cross-sectional perspective view of the folding assistance component in

[0029] Figure 21 is Figure 4 another schematic cross-sectional perspective view of the folding assistance component in

[0030] Figure 22 is Figure 4 another schematic cross-sectional perspective view of the folding assistance component in

[0031] Figure 23 is Figure 4 yet another schematic cross-sectional perspective view of the folding assistance component in

[0032] Figure 24 is Figure 1 a schematic perspective view of the folded state of the electronic device in

[0033] Figure 25 is Figure 24 a three-dimensional structural schematic diagram of the folding state of the folding assistance component in

[0034] Figure 26 is Figure 25 one of the three-dimensional sectional views of the folding assistance component in

[0035] Figure 27 is Figure 25 another three-dimensional sectional view of the folding assistance component in

[0036] Figure 28 is Figure 27 an enlarged view of part XXVIII in

[0037] Figure 29 is Figure 25 another three-dimensional sectional view of the folding assistance component in

[0038] Main reference numeral description:

[0039] 100, Electronic device; 20, Folding housing; 21, Frame; 211, Front; 212, Back; 214, Side; 215, End face; 216, Positioning groove; 30, Flexible screen; 31, Bendable area; 33, Non-bendable area; 50, Folding device; 51, Folding assist component; 52, Bendable mechanism; 521, Middle support member; 5210, Middle support plate; 5211, First front; 5213, First back; 5215, First connection area; 523, Side support member; 5230, First adjustment groove; 5230a, First adjustment surface; 5232, Second adjustment groove; 5232a, Second adjustment surface; 5231, Second back; 5233, Connection part; 5234, Rotation groove; 5235, Second support plate; 5236, Support part; 5236a, First side; 5236b, Second side; 5236c, Second back; 5237, Second connection area; 5238, Support edge; 528, Back cover; 5282, Connection part; 5284, Connection column; 54, Base; 540, Receiving groove; 541, First housing; 5412, Positioning post; 5414, First receiving groove; 542, Arc groove; 543, Mounting hole; 544, Second housing; 5442, Positioning hole; 5444, Second receiving groove; 545, First shaft hole; 546, Connection hole; 547, Fixing hole; 55, Rotating mechanism; 550, Rotating part; 551, Rotating shaft; 552, First rotating part; 5522, Arc track; 553, Second rotating part; 5531, Lug; 5533, First connection cylinder; 555, Connecting part; 5550, Guide sliding groove; 5552, Receiving groove; 5553, Second connection cylinder; 5556, Rotating track; 56, Linkage mechanism; 561, Rotating shaft; 5610, Shaft body; 5612, Connection cap; 5613, Positioning part; 5616, Card slot; 5617, First damping part; 562, Linkage part; 5620, Guide sliding rail; 5621, Avoidance groove; 5622, Sleeve; 5623, Link; 5624, Second shaft hole; 5626, First limiting surface; 5627, Second limiting surface; 5628, First adjustment shaft; 5629, Second adjustment shaft; 564, Gear assembly; 5641, Driving gear; 5642, Synchronous gear; 5644, Rotating shaft; 5646, Gear ring; 565, Fixing part; 5652, First guide sliding hole; 5654, First connection hole; 5656, Positioning part; 5657, Positioning rod; 57, Limiting mechanism; 572, Pushing part; 5720, Cam; 5720a, First protruding part; 5720b, First recessed part; 573, Holding part; 5730, First sliding cylinder; 5731, Pushing cam; 5732, Connection part; 5734, Second protruding part; 5735, Second recessed part; 5736, Second connection hole; 5737, Second damping part; 575, Elastic part; 576, Positioning part; 5760, Second sliding cylinder; 5763, Positioning part; 5765, Second guide sliding hole;5766, avoidance hole; 5767, third damping part; 5768, first anti-slip part; 577, friction assembly; 5770, first friction part; 5772, first positioning hole; 5774, second anti-slip part; 5775, second friction part; 5776, second positioning hole; 5778, fourth anti-slip part; 5779, buckle; 578, gasket; 5782, through hole; 5784, third anti-slip part; Detailed implementation manners

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0041] In addition, the descriptions of the following embodiments refer to the attached drawings for illustrating specific embodiments in which the present application can be implemented. Directional terms mentioned in the present application, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", etc., only refer to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer description and understanding of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present application. Unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "set on..." shall 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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0042] Please refer to Figures 1 to 9, an electronic device 100 in an embodiment of the present invention includes a folding housing 20 and a flexible screen 30 disposed on the folding housing 20. The folding housing 20 includes two frames 21 and a folding device 50 disposed between the two frames 21. The two frames 21 are respectively connected to opposite sides of the folding device 50. The flexible screen 30 is disposed on the front surfaces of the two frames 21 and the folding device 50. The flexible screen 30 includes a bendable area 31 corresponding to the folding device 50 and two non-bendable 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 bendable area 31 can be bent or flattened along with the folding device 50. The bendable area 31 can be bent into a U shape, a water droplet shape or other shapes. In this embodiment, the bendable area 31 can be bent into a water droplet shape. The folding device 50 includes a folding assisting component 51 and a bendable mechanism 52 connected to the folding assisting component 51. The folding assisting component 51 includes a base 54, a rotating mechanism 55, a linkage mechanism 56 and a limiting mechanism 57. The rotating mechanism 55 includes a rotating member 550 and a connecting member 555. One end of the rotating member 550 is rotatably connected to the base 54, and the opposite end of the rotating member 550 is rotatably connected to the connecting member 555 through a rotating shaft 551. The linkage mechanism 56 includes a connecting rod member 562. The connecting rod member 562 is rotatably connected to the base 54, and the end of the connecting rod member 562 away from the base 54 is slidably connected to the connecting member 555. The bendable mechanism 52 includes a side support member 523. The connecting rod member 562 and the side support member 523 are connected through the cooperation of a first adjustment groove and a first adjustment shaft and the cooperation of a second adjustment groove and a second adjustment shaft. The axis of the first adjustment shaft is parallel to the axis of the second adjustment shaft at an interval. The first adjustment groove and the second adjustment groove are offset from each other in the thickness direction of the side support member 523. Wherein, the movement of the first adjustment shaft along the first adjustment groove can cause the side support member 523 to rotate relative to the base 54 to be bent, and the movement of the second adjustment shaft along the second adjustment groove can cause the side support member 523 to rotate relative to the base 54 to be flattened.

[0043] In this embodiment, rotating mechanisms 55 are respectively provided on two opposite sides of the base 54. One end of the rotating member 550 of one of the rotating mechanisms 55 is rotatably connected to one side of the base 54, and the opposite end of the rotating member 550 is rotatably connected to the corresponding connecting member 555. One end of the rotating member 550 of the other rotating mechanism 55 is rotatably connected to the opposite side of the base 54, and the opposite end of the rotating member 550 is rotatably connected to the corresponding connecting member 555. The linkage mechanism 56 includes a pair of rotating shafts 561 arranged in parallel at intervals, two connecting rod members 562, and a gear assembly 564 disposed between the two connecting rod members 562. The pair of rotating shafts 561 are rotatably connected to one end of the base 54. One of the connecting rod members 562 is connected to one side of the base 54 through one of the rotating shafts 561. The end of one of the connecting rod members 562 away from one of the rotating shafts 561 is slidably connected to the corresponding connecting member 555. The other connecting rod member 562 is connected to the opposite side of the base 54 through the other rotating shaft 561. The end of the other connecting rod member 562 away from the other rotating shaft 561 is slidably connected to the corresponding connecting member 555. The foldable mechanism 52 includes two side supports 523. One of the connecting rod members 562 and one of the side supports 523 are connected through the cooperation of one first adjustment shaft 5628 and the corresponding first adjustment groove 5230 and one second adjustment shaft 5629 and the corresponding second adjustment shaft 5629. The other connecting rod member 562 and the corresponding side support 523 are connected through the cooperation of the other first adjustment shaft 5628 and the corresponding first adjustment groove 5230 and the other second adjustment shaft 5629 and the corresponding second adjustment groove 5232. The gear assembly 564 includes a driving gear 5641 and a synchronous gear 5642 provided on the connecting rod member 562. The two connecting rod members 562 are respectively provided with driving gears 5641, and the two driving gears 5641 are respectively engaged with the corresponding synchronous gears 5642. When at least one of the two connecting rod members 562 rotates around the axis of the corresponding rotating shaft 561, the driving gear 5641 drives the synchronous gear 5642 to rotate, so that the two connecting rod members 562 rotate synchronously relative to the base 54, so as to realize the synchronous rotation of the two rotating mechanisms 55 relative to the base 54. Specifically, when one of the rotating mechanisms 55 or both rotating mechanisms 55 rotate relative to the base 54 and approach or expand relative to each other, the two connecting rod members 562 rotate synchronously relative to the base 54 and approach or expand relative to each other. The first adjustment shaft 5628 moves along the first adjustment groove 5230. At the same time, the second adjustment shaft 5629 moves along the second adjustment groove 5232, so as to realize the synchronous rotation of the two side supports 523 relative to the base 54 and fold or expand relative to each other. The foldable area 31 is folded or flattened as the folding device 50 is folded or flattened.

[0044] The number of the folding assisting components 51 on the back surface of the foldable mechanism 52 is at least one. In this embodiment, the number of the folding assisting components 51 is two, and the two folding assisting components 51 are respectively arranged at opposite ends on the back surface of the foldable mechanism 52. In other embodiments, the number of the folding assisting components 51 may be more than three, and these folding assisting components 51 are arranged on the back surface of the foldable mechanism 52 at intervals.

[0045] In this embodiment, the "front surface" refers to the surface with the same light-emitting surface orientation as that of the flexible screen 30, and the "back surface" refers to the surface with the opposite light-emitting surface orientation to that of the flexible screen 30. The electronic device 100 is, for example, but not limited to, a mobile phone, a tablet computer, a display, a liquid crystal panel, an OLED panel, a television, a smart watch, a VR head-mounted display, an in-vehicle display, and other products and components with any display function. The "connection" in the description of the embodiments of the present invention includes two cases of direct connection and indirect connection. For example, the connection between A and B includes the direct connection between A and B or the connection through a third element C or more other elements. The connection also includes two cases of integrated connection and non-integrated connection. The integrated connection means that A and B are integrally formed and connected, and the non-integrated connection means that A and B are non-integrally formed and connected.

[0046] In the folding device 50 of the electronic device 100 of the present invention, the link member 562 and the side support member 523 are connected through the cooperation of the first adjustment shaft 5628 and the first adjustment groove 5230 and the cooperation of the second adjustment shaft 5629 and the second adjustment groove 5232. When the first adjustment shaft 5628 moves along the first adjustment groove 5230, the two side support members 523 can rotate relative to the base 54 to be bent; when the second adjustment shaft 5629 moves along the second adjustment groove 5232, the two side support members 523 can rotate relative to the base 54 to be flattened. Since the connection between the link member 562 and the side support member 523 of the folding device 50 of the present application is realized through the cooperation of the first adjustment shaft 5628 and the second adjustment shaft 5629 with the first adjustment groove 5230 and the second adjustment groove 5232 respectively, the dimension in the axial length direction of the adjustment shaft is enlarged, and the dimension in the axial thickness direction of the adjustment shaft is reduced, so as to reduce the thickness of the side support member 523 and the overall thickness of the folding device 50, which is beneficial to reducing the overall thickness of the electronic device 100.

[0047] As Figure 2 and Figure 3 shown, the frame 21 includes a front surface 211, a back surface 212, opposite side surfaces 214 and opposite end surfaces 215. A positioning groove 216 is provided on the side of the front surface 211 close to the folding device 50. The opposite ends of the positioning groove 216 respectively extend to be close to the two side surfaces 214, and one side of the positioning groove 216 penetrates through the end surface 215 facing the folding device 50. Optionally, function modules such as a battery, a PCB assembly, a speaker, a receiver, and a button are arranged inside the frame 21.

[0048] As Figures 4 - 9 shown, the foldable mechanism 52 further includes a middle support member 521, and two side support members 523 are respectively disposed on opposite sides of the middle support member 521. Opposite ends of the middle support member 521 are respectively connected to the two folding assistance assemblies 51; the back surface of the flexible screen 30 is attached to the front surface of the middle support member 521 and the front surfaces of the side support members 523. One of the rotation mechanisms 55 rotates relative to the base 54, and drives the other rotation mechanism 55 to rotate synchronously relative to the base 54 through the linkage mechanism 56. The first adjustment shaft 5628 and the second adjustment groove 5232 respectively roll along the first adjustment groove 5230 and the second adjustment groove 5232 to realize the synchronous unfolding or synchronous bending of the foldable mechanism 52. During the folding or unfolding of the folding device 50, the two rotation mechanisms 55 of each folding assistance assembly 51 respectively rotate synchronously relative to the base 54, the two link members 562 respectively rotate synchronously relative to the base 54, and at the same time, the two link members 562 respectively slide relative to the two rotation mechanisms 55. The driving gears 5641 on the two link members 562 respectively rotate around the axes of the two rotation shafts 561 to rotate the synchronous gear 5642; the frictional torque between the pushing member 572 and the holding member 573 can position the side support member 523 relative to the middle support member 521 so that the two frames 21 are relatively positioned at a specific angle.

[0049] The middle support member 521 includes a strip-shaped middle support plate 5210 and a back cover 528 connected to the back surface of the middle support plate 5210. The middle support plate 5210 includes a front surface 5211 and a first back surface 5213 facing away from the front surface 5211. First connection areas 5215 are respectively provided at opposite ends of the first back surface 5213 of the middle support plate 5210, and the two first connection areas 5215 are respectively used for connecting to the front surfaces of the two folding assistance components 51. Each side support member 523 includes a strip-shaped side support plate 5235 and a second connection area 5237 provided on the second back surface 5231 of the side support plate 5235. In this embodiment, two second connection areas 5237 are provided on the second back surface 5231 of the side support plate 5235, and the two second connection areas 5237 are located at opposite ends of the second back surface 5231 of the side support plate 5235. Each second connection area 5237 includes a pair of spaced-apart connection portions 5233 and a support portion 5236. The connection portions 5233 are provided on the side away from the middle support member 521, and the support portion 5236 is provided between the pair of connection portions 5233. Each pair of connection portions 5233 is provided with a pair of arc-shaped rotation grooves 5234, and the axis lines of the pair of rotation grooves 5234 are collinear. The first adjustment groove 5230 and the second adjustment groove 5232 are both provided on the support portion 5236. The first adjustment shaft 5628 and the second adjustment shaft 5629 are both provided at the end of the link member 562 away from the base 54. The first adjustment shaft 5628 is rollably inserted into the first adjustment groove 5230, and the second adjustment shaft 5629 is rollably inserted into the second adjustment groove 5232. The first adjustment groove 5230 and the second adjustment groove 5232 are parallel to each other.

[0050] Optionally, an avoidance groove 5621 is provided at the end of the link member 562 away from the base 54. The support portion 5236 is received in the avoidance groove 5621. The first adjustment groove 5230 is provided on one side surface of the support portion 5236, and the second adjustment groove 5232 is provided on the opposite side surface of the support portion 5236. The first adjustment groove 5230 and the second adjustment groove 5232 are offset from each other in the thickness direction of the middle support plate 5210, and the first adjustment groove 5230 and the second adjustment groove 5232 are also offset from each other in the length direction of the middle support plate 5210. The first adjustment shaft 5628 is provided on one inner side surface of the avoidance groove 5621, and the second adjustment shaft 5629 is provided on the opposite inner side surface of the avoidance groove 5621; specifically, the avoidance groove 5621 is provided on the front surface of the end of the link member 562 away from the base 54. The avoidance groove 5621 includes two inner side surfaces arranged face to face. The first adjustment shaft 5628 is provided at the end of one inner side surface away from the base 54, and the second adjustment shaft 5629 is provided at the end of the other inner side surface away from the base 54. The axis of the first adjustment shaft 5628 is closer to the base 54 than the axis of the second adjustment shaft 5629; and the second adjustment shaft 5629 is closer to the front surface of the link member 562 than the first adjustment shaft 5628.

[0051] As shown Figures 7 - 9 in the figure, the first adjustment groove 5230 is parallel to the second adjustment groove 5232, and the first adjustment groove 5230 is farther from the side support plate 5235 than the second adjustment groove 5232; specifically, the support portion 5236 is a support block convexly provided on the back surface of the side support plate 5235. The support portion 5236 includes a first side surface 5236a and a second side surface 5236b disposed opposite to each other, and a second back surface 5236c facing away from the side support plate 5235. The first side surface 5236a is parallel to the second side surface 5236b, and the first side surface 5236a is perpendicular to the length direction of the side support plate 5235. The first adjustment groove 5230 is provided on the first side surface 5236a, and the first adjustment groove 5230 penetrates through the second back surface 5236c; a support edge 5238 is provided on one side of the second side surface 5236b away from the side support plate 5235, and the support edge 5238 and the second side surface 5236b enclose the second adjustment groove 5232. Optionally, the back surface of the support edge 5238 is coplanar with the second back surface 5236c, and the second back surface 5236c is an arc surface. The first adjustment groove 5230 includes a first adjustment section and a second adjustment section located at its opposite ends, and the first adjustment section is farther from the middle support member 521 than the second adjustment section; the second adjustment groove 5232 includes a third adjustment section and a fourth adjustment section located at its opposite ends, and the third adjustment section is farther from the middle support member 521 than the fourth adjustment section; the first adjustment section and the third adjustment section are located at one end of the support portion 5236, and the second adjustment section and the fourth adjustment section are located at the opposite end of the support portion 5236. When the side support member 523 is in a flattened state relative to the middle support member 521, the first adjustment shaft 5628 and the second adjustment shaft 5629 are respectively positioned in the first adjustment section and the third adjustment section; when the side support member 523 is in a folded state relative to the middle support member 521, the first adjustment shaft 5628 and the second adjustment shaft 5629 are respectively positioned in the second adjustment section and the fourth adjustment section.

[0052] Optionally, the first adjustment groove 5230 has a first adjustment surface 5230a, and the second adjustment groove 5232 has a second adjustment surface 5232a. Both the first adjustment surface 5230a and the second adjustment surface 5232a are arc-shaped surfaces. The first adjustment surface 5230a is parallel to the second adjustment surface 5232a. The outer peripheral surface of the first adjustment shaft 5628 is slidably and rollably attached to the first adjustment surface 5230a, and the outer peripheral surface of the second adjustment shaft 5629 is slidably and rollably attached to the second adjustment surface 5232a. Optionally, the first adjustment surface 5230a and the second adjustment surface 5232a are coplanar in a direction parallel to the length of the side support plate 5235. Specifically, the first adjustment surface 5230a includes a first adjustment end and a second adjustment end at its opposite ends. The first adjustment end is farther from the middle support 521 than the second adjustment end. The first adjustment end is a rectangular surface parallel to the length direction of the side support plate 5235, and the second adjustment end is an arc-shaped surface that curves away from the side support plate 5235; the second adjustment surface 5232a includes a third adjustment end and a fourth adjustment end at its opposite ends. The third adjustment end is farther from the middle support 521 than the fourth adjustment end. The third adjustment end is a rectangular surface parallel to the length direction of the side support plate 5235, and the fourth adjustment end is an arc-shaped surface that curves away from the side support plate 5235. When the side support 523 is bent from the flattened state to the folded state relative to the middle support 521, the first adjustment shaft 5628 slides and rolls from the first adjustment end to the second adjustment end. At the same time, the second adjustment shaft 5629 slides and rolls from the third adjustment end to the fourth adjustment end; when the side support 523 is unfolded from the folded state to the flattened state relative to the middle support 521, the second adjustment shaft 5629 slides and rolls from the fourth adjustment end to the third adjustment end, and the first adjustment shaft 5628 slides and rolls from the second adjustment end to the first adjustment end.

[0053] Such as Figure 6 And Figure 7As shown, the back cover 528 is a strip-shaped frame. Connecting parts 5282 are respectively provided at opposite ends of the front surface of the back cover 528. The bases 54 of the two folding assisting components 51 are respectively connected to the two connecting parts 5282 of the back cover 528. The connecting part 5282 includes a plurality of connecting columns 5284. The connecting member 555 and the corresponding side support member 523 are rotatably connected through the cooperation of a rotating groove and a rotating rail. The rotating groove is provided on one of the side support member 523 and the connecting member 555, and the rotating rail is provided on the other of the side support member 523 and the connecting member 555. In this embodiment, rotating rails 5556 are respectively provided at opposite ends of the connecting member 555, and the two rotating rails 5556 are respectively rotatably received in the two rotating grooves 5234, so that the side support member 523 is rotatably connected to the connecting member 555. In some embodiments, rotating grooves are respectively provided at opposite ends of the connecting member 555, and the side support member 523 is provided with rotating rails corresponding to the rotating grooves of the connecting member 555. The rotating rails are rotatably received in the corresponding rotating grooves, so that the side support member 523 is rotatably connected to the connecting member 555.

[0054] Please refer to Figures 10 - 13 simultaneously. The rotating member 550 includes a first rotating part 552 and a second rotating part 553 at its opposite ends. The first rotating part 552 is provided at the first end of the rotating member 550, and the second rotating part 553 is provided at the second end opposite to the first end of the rotating member 550. The first rotating part 552 and the base 54 are rotatably connected through the cooperation of an arc rail and an arc groove. The arc groove is provided on one of the base 54 and the first rotating part 552, and the arc rail is provided on the other of the base 54 and the first rotating part 552. The axis of the arc groove is collinear with the axis of rotation between the rotating member 550 and the base 54. In this embodiment, receiving grooves 540 are respectively provided on opposite sides of the front surface of the base 54. The two receiving grooves 540 are used to respectively receive the first rotating parts 552 of the two rotating members 550. Arc grooves 542 are respectively provided on two opposite inner side surfaces of each receiving groove 540. The two arc grooves 542 at opposite ends of each receiving groove 540 are coaxial. Opposite ends of each arc groove 542 penetrate through the front surface of the base 54. Arc rails 5522 are respectively provided on opposite end surfaces of the first rotating part 552. The two arc rails 5522 are coaxial. When the first rotating part 552 is received in the corresponding receiving groove 540, the two arc rails 5522 are respectively rotatably received in the two arc grooves 542. The second rotating part 553 is rotatably connected to the connecting member 555 through a rotating shaft 551.

[0055] The base 54 includes a first base body 541 and a second base body 544 connected to the first base body 541; specifically, the first base body 541 and the second base body 544 are snap-connected through the cooperation of positioning posts and positioning holes. The positioning posts are provided on one of the first base body 541 and the second base body 544, and the positioning holes are provided on the other of the first base body 541 and the second base body 544. In this embodiment, positioning posts 5412 are provided on the side of the first base body 541 facing the second base body 544, and positioning holes 5442 are provided on the side of the second base body 544 facing the first base body 541. Opposite ends of the front side of the first base body 541 near the second base body 544 are respectively provided with first receiving grooves 5414, and opposite ends of the front side of the second base body 544 near the first base body 541 are respectively provided with second receiving grooves 5444; when the first base body 541 is connected to the second base body 544, the first receiving groove 5414 and the second receiving groove 5444 on the same side of the base 54 enclose a receiving groove 540. An arc groove 542 is provided at the end face of each first receiving groove 5414 of the first base body 541, and the axes of the two arc grooves 542 are spaced and parallel; an arc groove 542 is provided at the end face of each second receiving groove 5444 of the second base body 544, and the axes of the two arc grooves 542 are spaced and parallel. Mounting holes 543 are provided on the front surface of the base 54, and the locking member passes through the mounting holes 543 and is locked to the back cover so that the base 54 is fixedly connected to the back cover. Two first shaft holes 545, two connection holes 546 and a fixing hole 547 are provided on the end face of the second base body 544 facing the linkage mechanism 56. The two first shaft holes 545 are located on opposite sides of the base 54, the two connection holes 546 are located between the two first shaft holes 545, the fixing hole 547 is located between the two connection holes 546, and the axis lines of the two first shaft holes 545 and the two connection holes 546 are parallel to the rotation axis line between the rotating member 550 and the base 54.

[0056] In some embodiments, the arc grooves 542 on the base 54 and the arc tracks 5522 on the first rotating portion 552 can be interchanged. Specifically, arc tracks are provided on the two end faces of the base 54 opposite to the receiving groove 540, and the two arc tracks on the same side of the base 54 share the same axis line; arc grooves are provided on opposite sides of the first rotating portion 552, and the two arc grooves share the same axis line; when the first rotating portion 552 is received in the corresponding receiving groove 540, the two arc tracks can be rotatably received in the two arc grooves respectively.

[0057] The end of the second rotating part 553 away from the first rotating part 552 is rotatably connected to the corresponding connecting part 555 through a rotating shaft 551 at the first end of the connecting part 555. The ends of the two link parts 562 away from the base 54 are respectively slidably connected to the second ends of the two connecting parts 555. The second rotating part 553 is provided with a lug 5531 at the end away from the first rotating part 552. The first end of the connecting part 555 is provided with a receiving groove 5552. The lug 5531 is rotatably received in the receiving groove 5552. The rotating part 550 further includes a first connecting cylinder 5533 away from the base 54. The first connecting cylinder 5533 is provided at the end of the lug 5531 facing away from the first rotating part 552. The connecting part 555 includes a second connecting cylinder 5553 provided at its first end. The receiving groove 5552 penetrates the second connecting cylinder 5553 along the radial direction of the second connecting cylinder 5553. The first connecting cylinder 5533 and the second connecting cylinder 5553 are mutually engaged so that the first connecting cylinder 5533 and the second connecting cylinder 5553 are coaxial. The rotating shaft 551 passes through the inner cavity of the first connecting cylinder 5533 and the inner cavity of the second connecting cylinder 5553.

[0058] The end of the link part 562 away from the base 54 is slidably connected to one end of the corresponding connecting part 555 through the cooperation of a guide chute and a guide rail. The guide chute is provided on one of the link part 562 and the corresponding connecting part 555, and the guide rail is provided on the other of the link part 562 and the corresponding connecting part 555. The guide chute extends along a direction perpendicular to the rotation axis of the rotating part 550 and the base 54. In this embodiment, a guide chute 5550 is opened at the end of the connecting part 555 away from the rotating part 550, and a guide rail 5620 is provided at the end of the link part 562 away from the base 54 and is slidably inserted into the guide chute 5550.

[0059] As Figures 10 - 11 And Figures 14 - 17As shown, the rotating shaft 561 includes a shaft body 5610 and a connecting cap 5612 located at one end of the shaft body 5610, and a positioning portion 5613 is provided at the shaft body 5610 near the connecting cap 5612, wherein one rotating shaft 561 is fixedly connected to one of the connecting rods 562 through its positioning portion 5613, and the other rotating shaft 561 is fixedly connected to the other connecting rod 562 through its positioning portion 5613. In this embodiment, the positioning portion 5613 is a positioning groove 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 54; 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. A first damping portion 5617 is provided on the outer peripheral surface of the shaft body 5610 of the rotating shaft 561. Specifically, the first damping portion 5617 can be but is not limited to a first cam surface, a rough surface or a damping surface, etc., which is arranged around the outer peripheral surface of the shaft body 5610. In the present embodiment, the first damping portion 5617 is a cam surface which is arranged around the shaft body 5610.

[0060] The connecting rod 562 further comprises a sleeve 5622 and a connecting rod 5623. The connecting rod 5623 is connected to the outer peripheral wall of the sleeve 5622. The sleeve 5622 can be sleeved on the positioning portion 5613 of the shaft body 5610. Specifically, the sleeve 5622 has a non-circular second shaft hole 5624. After the rotating shaft 561 is inserted into the second shaft hole 5624 of the sleeve 5622, the sleeve 5622 can be positioned on the positioning portion 5613. The sleeve 5622 and the rotating shaft 561 can rotate together along the axis of the rotating shaft 561. The driving gear 5641 is arranged on the outer peripheral wall of the sleeve 5622. The driving gear 5641 is located on the side of the sleeve 5622 away from the connecting rod 5623, and the axis center line of the driving gear 5641 is colinear with the axis center line of the sleeve 5622. In this embodiment, the rotation angle of the teeth of the driving gear 5641 along the circumferential arrangement of the sleeve 5622 is 180 degrees. The avoidance groove 5621 is provided at one end of the connecting rod 5623 away from the sleeve 5622, and the first adjustment shaft 5628 and the second adjustment shaft 5629 are respectively provided on the opposite sides of the avoidance groove 5621. The axis of the first adjustment shaft 5628 is parallel to the axis of the sleeve 5622, and the axis of the first adjustment shaft 5628 is closer to the sleeve 5622 than the axis of the second adjustment shaft 5629; and the second adjustment shaft 5629 is closer to the front of the connecting rod 5623 than the first adjustment shaft 5628. The guide rails 5620 are respectively provided on the opposite sides of the connecting rod 5623, and the guide rails 5620 extend along the length direction of the connecting rod 5623. In other embodiments, guide slide grooves are respectively provided on opposite sides of the connecting rod 5623, and guide slide rails are respectively protruding from opposite sides of the receiving groove 5552 of the connecting member 555. When the connecting rod 5623 is accommodated in the receiving groove 5552 of the connecting member 555, the two guide slide rails can be slidably inserted into the two guide slide grooves.

[0061] Optionally, the first adjustment shaft 5628, the second adjustment shaft 5629, and the link member 562 can be integrally formed, eliminating the need to install the first adjustment shaft 5628 and the second adjustment shaft 5629 and reducing the manufacturing cost.

[0062] The linkage mechanism 56 further includes a fixing member 565 and a positioning member 576. The fixing member 565 is connected to one end of the two rotating shafts 561, and the positioning member 576 is connected to the opposite ends of the two rotating shafts 561. The fixing member 565 is a rectangular positioning piece, and the opposite ends of the fixing member 565 are respectively provided with first guide sliding holes 5652. The opposite ends of the positioning member 576 are respectively provided with second guide sliding holes 5765. The shaft bodies 5610 of the two rotating shafts 561 respectively pass through the two first guide sliding holes 5652 and the two second guide sliding holes 5765. One of the rotating shafts 561 can rotate in the first guide sliding hole 5652, and the other rotating shaft 561 can rotate in the second guide sliding hole 5765. The fixing member 565 and the positioning member 576 can only slide along the axial directions of the two rotating shafts 561. Between the two first guide sliding holes 5652 in the middle of the fixing member 565, there are two spaced first connection holes 5654. The axis line of the first guide sliding hole 5652 is parallel to the axis line of the first connection hole 5654. On the side of the fixing member 565 facing the link member 562, there is a positioning portion 5656. The link member 562 includes a first limiting surface 5626 and a second limiting surface 5627. When the two link members 562 are in a folded state relative to the base 54, the positioning portion 5656 abuts against the first limiting surface 5626. When the two link members 562 are in a flattened state relative to the base 54, the positioning portion 5656 abuts against the second limiting surface 5627. Specifically, at the end of the sleeve 5622 facing away from the pushing member 572, there is a notch around the second shaft hole 5624. The first limiting surface 5626 and the second limiting surface 5627 are respectively the opposite end faces of the notch. The first limiting surface 5626 is farther from the guide rail 5620 than the second limiting surface 5627. The positioning portion 5656 is a positioning block. On the side of the fixing member 565 facing away from the positioning portion 5656, there is a positioning rod 5657 for positioning on the base 54. The opposite end faces of the fixing member 565 are arc surfaces.

[0063] The limiting mechanism 57 includes a pushing member 572, a holding member 573, an elastic member 575, a positioning member 576 connected to a pair of rotating shafts 561, and a friction assembly 577 provided on the link member 562; the pushing member 572, the holding member 573, the elastic member 575, the positioning member 576, and the friction assembly 577 are sleeved on the rotating shaft 561, and the opposite ends of the elastic member 575 are elastically abutted against the holding member 573 and the positioning member 576 respectively. The pushing member 572 includes a cam 5720 sleeved on the rotating shaft 561, the cam 5720 is provided at one end of the sleeve 5622, and the cam 5720 and the sleeve 5622 share the same axis. The cam 5720 is provided at the end of the sleeve 5622 away from the driving gear 5641, and the cams 5720 of the two link members 562 are on the same side. Optionally, the cam 5720 includes a concave-convex surface provided at the end of the sleeve 5622, the concave-convex surface includes a first protruding portion 5720a and a first concave portion 5720b, and the first protruding portion 5720a and the first concave portion 5720b are arranged at intervals in sequence along the circumferential direction of the sleeve. The number of the first protruding portions 5720a and the number of the first concave portions 5720b can be set as required. For example, the cam 5720 can include one first protruding portion 5720a and one first concave portion 5720b, two first protruding portions 5720a and two first concave portions 5720b, three first protruding portions 5720a and three first concave portions 5720b, or four first protruding portions 5720a and four first concave portions 5720b, etc.

[0064] The synchronous gear 5642 includes a rotating shaft 5644 and a gear ring 5646. The gear ring 5646 is fixedly sleeved on the rotating shaft 5644, and the opposite ends of the rotating shaft 5644 respectively extend out of the opposite ends of the gear ring 5646. In this embodiment, the gear assembly 564 includes a pair of synchronous gears 5642 that mesh with each other, one of the synchronous gears 5642 meshes with one of the driving gears 5641, and the other synchronous gear 5642 meshes with the other driving gear 5641. The diameter of the pitch circle of the gear ring 5646 is smaller than the diameter of the pitch circle of the driving gear 5641, and the number of teeth around the synchronous gear 5642 in one circle is less than the number of teeth around the driving gear 5641 in one circle. In a certain width and height space of the rotating shaft 561, by arranging two synchronous gears 5642 between the two rotating shafts 561, the diameter of the pitch circle of the driving gear 5641 can be increased, so that the outer diameter of the cam 5720 can be increased.

[0065] The abutting member 573 includes a first sliding cylinder 5730 sleeved on the rotating shaft 561 and an abutting cam 5731 sleeved on the rotating shaft 561. The abutting cam 5731 is arranged at one end of the first sliding cylinder 5730, and the abutting cam 5731 and the first sliding cylinder 5730 are coaxial. One of the inner peripheral surface of the first sliding cylinder 5730 and the outer peripheral surface of the rotating shaft 561 is provided with a first damping portion, and the other is provided with a second damping portion, and the first damping portion and the second damping portion abut against each other. The outer peripheral surface of the rotating shaft 561 is provided with a first damping portion 5617, and the inner peripheral surface of the first sliding cylinder 5730 is provided with a second damping portion 5737. The second damping portion 5737 can be, but is not limited to, a cam surface, a rough surface, a damping surface, etc. surrounding the inner peripheral surface of the first sliding cylinder 5730. In this embodiment, the second damping portion 5737 is a second cam surface surrounding the inner peripheral surface of the first sliding cylinder 5730 for one circle. When the rotating shaft 561 is inserted into the inner cavity of the first sliding cylinder 5730, the first damping portion 5617 and the second damping portion 5737 abut against each other, that is, the first cam surface and the second cam abut against each other. The abutting member 573 includes two first sliding cylinders 5730 spaced apart from each other and a connecting strip 5732 connecting the two first sliding cylinders 5730. One abutting cam 5731 is arranged at one end of one of the first sliding cylinders 5730, the abutting cam 5731 and one of the first sliding cylinders 5730 are coaxial, and the other abutting cam 5731 is arranged at one end of the other first sliding cylinder 5730, the abutting cam 5731 and the other first sliding cylinder 5730 are coaxial, and the two abutting cams 5731 are located on the same side of the connecting strip 5732. The two first sliding cylinders 5730 and the two abutting cams 5731 are respectively slidably sleeved on a pair of rotating shafts 561, and the two rotating shafts 561 are respectively rotatably inserted into the two first sliding cylinders 5730, and the abutting member 573 can slide along the axial direction of the rotating shaft 561. Specifically, the abutting cam 5731 includes a concave-convex surface arranged at one end of the first sliding cylinder 5730. The concave-convex surface includes a second protruding portion 5734 and a second concave portion 5735, and the second protruding portion 5734 and the second concave portion 5735 are sequentially arranged at intervals along the circumferential direction of the sleeve. The number of the first protruding portions 5720a and the number of the first concave portions 5720b on the cam 5720 are the same as the number of the second protruding portions 5734 and the number of the second concave portions 5735 on the abutting cam 5731, so that the first protruding portion 5720a cooperates with the second concave portion 5735, and the second protruding portion 5734 cooperates with the first concave portion 5720b. The abutting member 573 is provided with a second connecting hole 5736. Specifically, the connecting strip 5732 is provided with two second connecting holes 5736, and the axis line of the second connecting hole 5736 is parallel to the axis line of the first sliding cylinder 5730. The rotating shafts 5644 at the opposite ends of the rotating shaft 5642 of the synchronous gear 5642 are respectively inserted through the first connecting hole 5654 and the second connecting hole 5736. The elastic member 575 includes a spring sleeved on each rotating shaft 561.

[0066] Optionally, the positioning member 576 includes a second sliding cylinder 5760 sleeved on the rotating shaft 561. The elastic member 575 is clamped between the first sliding cylinder 5730 and the second sliding cylinder 5760. One of the inner peripheral surface of the second sliding cylinder 5760 and the outer peripheral surface of the rotating shaft 561 is provided with a first damping portion, and the other is provided with a third damping portion. The first damping portion and the third damping portion abut against each other. In this embodiment, the inner peripheral surface of the second sliding cylinder 5760 is provided with a third damping portion 5767. The third damping portion 5767 may be, but is not limited to, a cam surface, a rough surface, or a damping surface surrounding the inner peripheral surface of the second sliding cylinder 5760, etc. In this embodiment, the third damping portion 5767 is a third cam surface surrounding the inner peripheral surface of the second sliding cylinder 5760 in a circle. When the rotating shaft 561 is inserted into the inner cavity of the second sliding cylinder 5760, the first damping portion 5617 and the third damping portion 5767 abut against each other, that is, the first cam surface and the third cam abut against each other. In this embodiment, the positioning member 576 includes two second sliding cylinders 5760 spaced apart from each other and a positioning portion 5763 connecting the two first sliding cylinders 5730. The positioning portion 5763 is located between a pair of rotating shafts 561. Specifically, the positioning portion 5763 is a rectangular positioning block. The two second sliding cylinders 5760 are provided on opposite sides of the positioning block. The second sliding cylinder 5760 is provided with a second guiding hole 5765 along its axial direction. The inner peripheral surface of the second guiding hole 5765 of at least one of the second sliding cylinders 5760 is provided with a third damping portion 5767. Optionally, two avoiding holes 5766 are provided on one side of the positioning portion 5763 facing the synchronous gear 5642. One end of the rotating shaft 5644 of the synchronous gear 5642 can be respectively inserted into the two avoiding holes 5766 of the positioning portion 5763.

[0067] The friction assembly 577 includes a first friction member 5770, a gasket 578, a second friction member 5775 and a buckle 5779. Both the first friction member 5770 and the gasket 578 are connected to the rotating shaft 561. The first friction member 5770 is clamped by the positioning member 576 and the gasket 578. The first friction member 5770 can rotate with the rotating shaft 561 relative to the positioning member 576 and the gasket 578, and there is a frictional resistance between the first friction member 5770 and the positioning member 576. Both the second friction member 5775 and the buckle 5779 are connected to the rotating shaft 561. The second friction member 5775 is clamped by the buckle 5779 and the gasket 578. The second friction member 5775 can rotate with the rotating shaft 561 relative to the gasket 578. In this embodiment, the friction assembly 577 includes a pair of first friction members 5770 and a pair of second friction members 5775. The pair of first friction members 5770 and the pair of second friction members 5775 are respectively sleeved on two rotating shafts 561. A pair of buckles 5779 are respectively clamped in the card slots 5616 of a pair of rotating shafts 561. The pair of first friction members 5770 are clamped by the gasket 578 and the positioning member 576. The pair of second friction members 5775 are clamped by the gasket 578 and a pair of buckles 5779. When the rotating shaft 561 rotates relative to the base 54, the first friction member 5770 and the second friction member 5775 rotate with the rotating shaft 561. There is a frictional resistance between the first friction member 5770 and the positioning member 576 and the gasket 578, and there is a frictional resistance between the second friction member 5775 and the gasket 578. The buckle 5779 can be, but is not limited to, a C-shaped buckle or a U-shaped buckle, etc. The buckle 5779 is used to be clamped in the card slot 5616 of the rotating shaft 561.

[0068] Specifically, a first positioning hole 5772 is formed in the middle of the first friction member 5770. The first friction member 5770 is fixedly connected to the rotating shaft 561 through the first positioning hole 5772. A second anti-slip portion 5774 is provided on the side surface of the first friction member 5770 facing the positioning member 567 and / or a second anti-slip portion 5774 is provided on the side surface of the first friction member 5770 facing away from the positioning member 576. The second anti-slip portion 5774 can increase the frictional resistance of the first friction member 5770. In this embodiment, second anti-slip portions 5774 are respectively provided on the opposite side surfaces of the first friction member 5770. In this embodiment, a first anti-slip portion 5768 is provided on the side surface of the positioning member 576 facing the first friction member 5770, and a second anti-slip portion 5774 is provided on the side surface of the first friction member 5770 facing the positioning member 576. Optionally, 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 surface of the first friction member 5770 facing the positioning member 576 is retained; or the second anti-slip portion 5774 on the side surface 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. The second anti-slip portion 5774 can be, but is not limited to, a rough surface, a damping layer, a plurality of small protrusions or a plurality of small concave convex portions, holes or a rough surface provided on the first friction member 5770, etc.

[0069] The spacer 578 is slidably sleeved on a pair of rotating shafts 561, and the first friction member 5770 is located between the spacer 578 and the positioning member 576; when the first friction member 5770 rotates with the rotating shaft 561, there is a frictional resistance between the first friction member 5770 and the positioning member 576, and there is a frictional resistance between the first friction member 5770 and the spacer 578. Specifically, the spacer 578 is a strip-shaped plate, through holes 5782 are respectively provided at opposite ends of the spacer 578, and third anti-slip portions 5784 are respectively provided on opposite side surfaces of the spacer 578 around each through hole 5782. The third anti-slip portion 5784 can be, but is not limited to, a protrusion, a hole or a rough surface provided on the spacer 578, etc. In this embodiment, the third anti-slip portion 5784 is a plurality of holes provided on opposite side surfaces of the spacer 578 around each through hole 5782. In this embodiment, a third anti-slip portion 5784 is provided on the side surface of the spacer 578 facing the first friction member 5770, and a second anti-slip portion 5774 is provided on the side surface of the first friction member 5770 facing the spacer 578. Optionally, the third anti-slip portion 5784 on the side surface of the spacer 578 facing the first friction member 5770 can be omitted, and only the second anti-slip portion 5774 on the side surface of the first friction member 5770 facing the spacer 578 is retained; or the second anti-slip portion 5774 on the side surface of the first friction member 5770 facing the spacer 578 can be omitted, and only the third anti-slip portion 5784 on the side surface of the spacer 578 facing the first friction member 5770 is retained. Optionally, opposite ends of the spacer 578 are respectively provided as arc surfaces.

[0070] A second positioning hole 5776 is formed in the middle of the second friction member 5775. The second friction member 5775 is fixedly connected to the rotating shaft 561 through the second positioning hole 5776. The gasket 578 is provided with a third anti-slip portion 5784 on the side facing the second friction member 5775, and / or the second friction member 5775 is provided with a fourth anti-slip portion 5778 on the side facing the gasket 578. In this embodiment, the fourth anti-slip portions 5778 are respectively provided on the opposite side surfaces of the second friction member 5775, and the fourth anti-slip portion 5778 can be, but is not limited to, a convex portion, a hole, a rough surface, etc. provided on the second friction member 5775. In this embodiment, a plurality of holes are respectively provided on the opposite side surfaces of the second friction member 5775, and these holes can increase the frictional resistance of the second friction member 5775. In this embodiment, the gasket 578 is provided with a third anti-slip portion 5784 on the side facing the second friction member 5775, and the second friction member 5775 is provided with a fourth anti-slip portion 5778 on the side facing the gasket 578. Optionally, the third anti-slip portion 5784 on the side of the gasket 578 facing the second friction member 5775 can be omitted, and only the fourth anti-slip portion 5778 on the side of the second friction member 5775 facing the gasket 578 is retained; or the fourth anti-slip portion 5778 on the side of the second friction member 5775 facing the gasket 578 can be omitted, and only the third anti-slip portion 5784 on the side of the gasket 578 facing the second friction member 5775 is retained. The gasket 578 and the second friction member 5775 abut against each other, and when the second friction member 5775 rotates with the rotating shaft 561, there is a frictional resistance between the second friction member 5775 and the gasket 578.

[0071] Please refer to Figures 14 - 17, when assembling the linkage mechanism 56 and the limiting mechanism 57, insert the end portions of the two rotating shafts 561 away from the connecting caps 5612 into the two first guiding sliding holes 5652 of the fixing member 565 respectively until the fixing member 565 abuts against the connecting caps 5612; engage the two synchronous gears 5642 with each other and place them between the two connecting rod members 562, and the two synchronous gears 5642 respectively engage the two driving gears 5641; insert the end portions of the two rotating shafts 561 away from the connecting caps 5612 into the two sleeves 5622 respectively, and insert the end portions of the two rotating shafts 5644 of the gear assembly 564 close to the fixing member 565 into the two first connecting holes 5654 of the fixing member 565, and the positioning portions 5656 are received in the notches of the corresponding sleeves 5622; each positioning portion 5656 is located between the corresponding first limiting surface 5626 and the second limiting surface 5627. Sleeve the abutting member 573 on the two rotating shafts 561 so that the two abutting cams 5731 can respectively rotatably engage with the two cams 5720; specifically, insert the end portions of the two rotating shafts 561 provided with the card slots 5616 into the inner cavities of the two first sliding cylinders 5730 of the abutting member 573, the second damping portion 5737 of one of the first sliding cylinders 5730 is sleeved on the first damping portion 5617 of the corresponding rotating shaft 561, and the two rotating shafts 5644 are respectively inserted into the two second connecting holes 5736 of the abutting member 573, and the two rotating shafts 5644 respectively pass through the corresponding second connecting holes 5736; sleeve the two elastic members 575 on the two rotating shafts 561 respectively, sleeve the two second sliding cylinders 5760 of the positioning member 576 on the two rotating shafts 561 respectively, so that the third damping portion 5767 of one of the second sliding cylinders 5760 is sleeved on the first damping portion 5617 of the corresponding rotating shaft 561, and the two elastic members 575 are clamped between the abutting member 573 and the positioning member 576; sleeve two of the first friction members 5770 on the two rotating shafts 561 respectively, sleeve the spacer 578 on the two rotating shafts 561, and then sleeve the other two second friction members 5775 on the two rotating shafts 561 respectively. At this time, the spacer 578 is located between the first friction member 5770 and the second friction member 5775, and the card slot 5616 of each rotating shaft 561 exposes the side surface of the corresponding second friction member 5775 away from the positioning member 576; then snap the two fasteners 5779 onto the card slots 5616 of the two rotating shafts 561 respectively. At this time, that is, the cams 5720 and the abutting cams 5731 on the same rotating shaft 561 are coaxial and cooperate with each other. The elastic member 575 is used to push the abutting member 573 so that the cam 5720 rotatably abuts against the abutting cam 5731. The two fasteners 5779 respectively abut against the side surfaces of the two second friction members 5775 away from the positioning member 576, and the elastic member 575 is in a compressed state.

[0072] When the linkage mechanism 56 is bent from the fully flattened state, one of the link members 562 is bent relative to the abutting member 573 toward the other link member 562. This one link member 562 rotates about the axis line of the corresponding rotating shaft 561 to drive the corresponding rotating shaft 561, the driving gear 5641, and the corresponding pushing member 572 to rotate about the axis line of the rotating shaft 561. The rotating driving gear 5641 drives the other driving gear 5641 to rotate through the synchronous gear 5642. The rotation of the other driving gear 5641 drives the corresponding rotating shaft 561, the sleeve 5622, and the link member 562 to rotate, so that the two link members 562 of the linkage mechanism 56 approach each other synchronously. At the same time, the pushing members 572 on the two link members 562 rotate relative to the abutting member 573 respectively, so that the two cams 5720 rotate and push the two abutting cams 5731 respectively. The abutting member 573 slides axially along the rotating shaft 561 to squeeze the elastic member 575. The elastic member 575 elastically pushes the positioning member 576, so that 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 buckle 5779. And the first friction member 5770 and the second friction member 5775 rotate relative to the positioning member 576 and the gasket 578 along with the corresponding rotating shaft 561. During the above process, the axial forces on the cam 5720, the corresponding abutting cam 5731, the first friction member 5770, and the second friction member 5775 sleeved on each rotating shaft 561 are equal to the elastic force of the elastic member 575; the frictional torque between each cam 5720 and the corresponding abutting cam 5731 and / or the frictional resistance of the first friction member 5770, the frictional resistance of the second friction member 5775, and the frictional resistance between the two first damping portions 5617 and the second damping portion 5737 and the third damping portion 5767 respectively can limit the two link members 562 at a specific angle between 180 degrees and 0 degrees. When the angle between the two link members 562 is 180 degrees, the linkage mechanism 56 is in a fully flattened state. When the angle between the two link members 562 is 0 degrees, the linkage mechanism 56 is in a fully bent state.

[0073] In other usage modes, the two link members 562 can be rotated together in opposite directions. The two link members 562 rotate respectively along the axis lines of the corresponding rotation shafts 561 to drive a pair of rotation shafts 561, a pair of driving gears 5641 and two pushing members 572 to rotate respectively along the axis lines of the pair of rotation shafts 561. The two driving gears 5641 drive the two synchronous gears 5642 to rotate together, so that the two link members 562 approach each other synchronously. At the same time, the pushing members 572 on the two link members 562 rotate relative to the holding members 573 respectively, so that the two cams 5720 rotate and push the two abutting cams 5731 of the holding members 573 respectively. The holding member 573 slides axially along the rotation shaft 561 to squeeze the elastic member 575. The elastic member 575 elastically abuts against the positioning member 576 to clamp the first friction member 5770 and the second friction member 5775, and the first friction member 5770 and the second friction member 5775 rotate relative to the positioning member 576 and the gasket 578 along the corresponding rotation shaft 561.

[0074] When the linkage mechanism 56 is unfolded from the fully bent state, one link member 562 is unfolded relative to the holding member 573 away from the other link member 562. The one link member 562 rotates along the axis line of the corresponding rotation shaft 561 to drive the corresponding rotation shaft 561, the driving gear 5641 and the corresponding pushing member 572 to rotate along the axis line of the rotation shaft 561. The rotating driving gear 5641 drives the other driving gear 5641 to rotate through the synchronous gear 5642, and then drives the corresponding rotation shaft 561, the sleeve 5622 and the corresponding pushing member 572 to rotate, so that the two link members 562 of the linkage mechanism 56 move away from each other synchronously. At the same time, the pushing members 572 on the two link members 562 rotate relative to the holding members 573 respectively, so that the two cams 5720 rotate and push the two abutting cams 5731 respectively. The elastic member 575 elastically abuts between the holding member 573 and the positioning member 576, so that the holding member 573 slides axially along the rotation shaft 561. 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 buckle 5779, and 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 rotation shaft 561. In the above process, the axial forces on the cam 5720, the abutting cam 5731, the first friction member 5770 and the second friction member 5775 on each rotation shaft 561 are equal to the elastic force of the elastic member 575. The frictional torque between each cam 5720 and the abutting cam 5731, the frictional resistance of the first friction member 5770 and the second friction member 5775, and the frictional resistance between the two first damping portions 5617 and the second damping portion 5737 and the third damping portion 5767 respectively can limit the two link members 562 at a specific angle between 0 degrees and 180 degrees.

[0075] In other usage modes, the two link members 562 can be rotated together in directions away from each other. The two link members 562 rotate respectively along the axis lines of a pair of rotating shafts 561 to drive the pair of rotating shafts 561, a pair of driving gears 5641 and two pushing members 572 to rotate respectively along the axis lines of the pair of rotating shafts 561. The two driving gears 5641 drive the two synchronous gears 5642 to rotate together, so that the two link members 562 move away from each other and flatten. At the same time, the pushing members 572 on the two link members 562 rotate relative to the abutting members 573 respectively, so that the two cams 5720 rotate and abut against the two abutting cams 5731 respectively. The abutting member 573 slides axially along the rotating shaft 561 to squeeze the elastic member 575. The elastic member 575 elastically abuts against the positioning member 576 to clamp the first friction member 5770 and the second friction member 5775, and the first friction member 5770 and the second friction member 5775 rotate relative to the positioning member 576 and the gasket 578 along with the corresponding rotating shaft 561.

[0076] Please refer to Figures 4 - 12 and Figures 18 - 23, when assembling the folding device 50, place the two first connecting cylinders 5533 of a rotating member 550 in the two receiving grooves 5552 of one of the connecting members 555, and place the two first connecting cylinders 5533 of the other rotating member 550 in the two receiving grooves 5552 of the other connecting member 555; insert the rotating shaft 551 into the inner cavities of the corresponding first connecting cylinders 5533 and the inner cavities of the corresponding second connecting cylinders 5553, so that the rotating members 550 are respectively rotatably connected to the connecting members 555; place the first rotating portions 552 of a rotating member 550 in the receiving grooves 540 on one side of the base 54, and place the first rotating portions 552 of the other rotating member 550 in the receiving grooves 540 on the relatively opposite side of the base 54, so that the two arc tracks 5522 of each first rotating portion 552 are respectively rotatably received in the two arc grooves 542 of the base 54, and the positioning posts 5412 are snap-fitted into the positioning holes 5442. Place the combination of the linkage mechanism 56 and the limiting mechanism 57 between the two connecting members 555, slide the two guide rails 5620 of a link member 562 into the two guide chutes 5550 of one of the connecting members 555 respectively, and slide the two guide rails 5620 of the other link member 562 into the guide chutes 5550 of the other connecting member 555, so that the two connecting caps 5612, the two rotating shafts 5644 and the positioning rod 5657 are respectively inserted into the two first shaft holes 545, the two connecting holes 546 and the fixing holes 547. Place the two folding assisting assemblies 51 on the two connecting portions 5282 of the back cover 528 respectively, place the two first connecting regions 5215 of the middle support plate 5210 on the two bases 54, and lock the fasteners through the connecting holes on the middle support plate 5210 and the mounting holes 543 on the bases 54 to the corresponding connecting columns; place the two side support members 523 on the relatively opposite sides of the base 54, rotatably place the two rotating tracks 5556 of each connecting member 555 in the corresponding pair of rotating grooves 5234 respectively, and insert the first adjusting shaft 5628 and the second adjusting shaft 5629 of each link member 562 into the corresponding first adjusting groove 5230 and the second adjusting groove 5232 respectively; make the middle support plate 5210 located between the two side support members 523. Then connect the back cover 528 to the back surface of the middle support plate 5210. When the two side support members 523 are in a fully flattened state, the first adjusting shaft 5628 and the second adjusting shaft 5629 are respectively positioned at the first adjusting section and the third adjusting section, and the positioning portion 5656 abuts against the second limiting surface, so that the folding device 50 is kept in a fully flattened state, and the front surfaces of the two side support members 523 and the middle support member 521 are coplanar, preventing the side support members 523 from being bent back relative to the middle support member 521.When the two side supports 523 are in a fully bent state, the first adjustment shaft 5628 and the second adjustment shaft 5629 are respectively positioned at the second adjustment section and the fourth adjustment section, and the positioning portion 5656 abuts against the first limiting surface so as to keep the folding device 50 in a fully bent state. The front surfaces of the two side supports 523 and the middle support 521 enclose a water droplet shape.

[0077] Please also refer to Figures 1 - 3 , place the installed folding device 50 between the two frames 21, respectively place the connectors 555 on the opposite sides of the folding device 50 in the positioning grooves 216 of the two frames 21 and fixedly connect them to the two frames 21. At this time, the front surfaces of the two frames 21, the front surface of the middle support 521 and the front surfaces of the two side supports 523 are coplanar. The back surface of the flexible screen 30 is connected to the front surfaces of the two frames 21 and the front surface of the folding device 50. The foldable area 31 faces the folding device 50, and the two non-foldable areas 33 respectively face the front surface foldable mechanisms of the two frames 21.

[0078] Please also refer to Figure 1 and Figures 24 to 29When bending the electronic device 100, a bending force is applied to at least one of the two frames 21 of the electronic device 100, causing the rotating mechanism 55 connected to the two frames 21 to rotate in a direction approaching each other, and the folding device 50 is bent by the two folding assistance components 51, and the bendable area 31 is bent along with the bendable mechanism 52. Specifically, when a bending force is applied to one frame 21, this frame 21 drives the corresponding rotating mechanism 55 to rotate relative to the base 54 toward the side close to the flexible screen 30; so as to drive the corresponding link member 562 to rotate relative to the base 54 toward the side close to the flexible screen 30 along the axis line of the corresponding rotating shaft 561. At the same time, the guide rail 5620 of the link member 562 slides in the guide groove 5550 of the corresponding connecting member 555, and the sleeve 5622, the rotating shaft 561, the driving gear 5641 and the pushing member 572 of the link member 562 rotate along the axis line of the corresponding rotating shaft 561. The rotating driving gear 5641 drives another driving gear 5641 to rotate through the synchronous gear 5642 gear assembly, and then drives the corresponding rotating shaft 561, the sleeve 5622, the pushing member 572 and the link 5623 to rotate, so that the two link members 562 of the linkage mechanism 56 approach each other synchronously; at the same time, the two cams 5720 respectively rotate and push the two abutting cams 5731, and the abutting member 573 slides along the axial direction of the rotating shaft 561 to squeeze the elastic member 575. The elastic member 575 elastically pushes the positioning member 576 so that the first friction member 5770 is clamped between the gasket 578 and the positioning member 576 and the first friction member 5770 is clamped between the gasket 578 and the buckle 5779, and the first friction member 5770 and the second friction member 5775 rotate relative to the gasket 578 and the positioning member 576 along with the corresponding rotating shaft 561. During the bending process of the linkage mechanism 56, the first rotating portion 552 of the rotating member 550 rotates relative to the base 54 through the cooperation of the arc track and the corresponding arc groove, and the second rotating portion 553 of the rotating member 550 is rotatably connected to the corresponding connecting member 555 along the corresponding rotating shaft 551. The first adjusting shaft 5628 slides and rolls from the first adjusting end in the first adjusting groove 5230 to the second adjusting end, and at the same time, the second adjusting shaft 5629 slides and rolls from the third adjusting end in the second adjusting groove 5232 to the fourth adjusting end. The two link members 562 respectively rotate along the axis line of the corresponding rotating shaft 561 and approach each other to realize the mutual approach of the two side support members 523, so that the folding device 50 is in a bent state, and the bendable area 31 of the flexible screen 30 is bent along with the folding device 50 until the fronts of the two non-bendable areas 33 of the flexible screen 30 are mutually attached, and the bendable area 31 is bent into a water droplet shape, thus realizing the seamless folding of the electronic device 100.

[0079] During the bending process of the electronic device 100, the sum of the frictional torque between the cam 5720 and the abutting cam 5731, the frictional resistance of the first friction member 5770, the frictional resistance of the second friction member 5775, the frictional resistance between the first damping portion 5617 of one of the rotating shafts 561 and the second damping portion 5737 of the first sliding cylinder 5730, and the frictional resistance between the first damping portion 5617 of the other rotating shaft 561 and the third damping portion 5767 of the second sliding cylinder 5760 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 at a specific angle between 180 degrees and 0 degrees. When the two frames 21 are bent and limited at 0 degrees, that is, the two non-bending regions 33 of the flexible screen 30 are parallel to each other; the bendable region 31 of the flexible screen 30 is bent into a water droplet shape, reducing the duty ratio of the bendable region 31 after bending, thereby reducing the overall thickness of the electronic device 100.

[0080] 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 toward the side close to the flexible screen 30, and the electronic device 100 is bent through the folding device 50.

[0081] When the electronic device 100 needs to be flattened, a housing 21 is pulled outwards, causing two rotating mechanisms 55 connected to the two housings 21 to rotate away from each other. Specifically, an outward pulling force is applied to a housing 21 of the electronic device 100, and this housing 21 drives the corresponding rotating mechanism 55 to rotate relative to the base 54 towards the side away from the flexible screen 30, causing the guide rail 5620 of the link member 562 to slide in the guide groove 5550 of the corresponding connecting member 555. The sleeve 5622, the rotating shaft 561, the driving gear 5641, and the pushing member 572 of the link member 562 rotate along the axis of the corresponding rotating shaft 561. The rotating driving gear 5641 drives another driving gear 5641 to rotate through a gear assembly of the synchronous gear 5642. The rotation of the other driving gear 5641 drives the corresponding rotating shaft 561, sleeve 5622, pushing member 572, and link 5623 to rotate along the axis of the corresponding rotating shaft 561. The guide rails 5620 of the two link members 562 slide in the guide grooves 5550 of the corresponding connecting members 555, so that the two link members 562 of the linkage mechanism 56 move away from each other synchronously; at the same time, the two cams 5720 respectively rotate and push the two abutting cams 5731. The elastic member 575 elastically abuts between the positioning member 576 and the abutting member 573, so that the positioning member 576 slides along the axial direction of the rotating shaft 561. 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 buckle 5779. The first friction member 5770 and the second friction member 5775 rotate relative to the gasket 578 and the positioning member 576 along with the corresponding rotating shaft 561; during the bending process of the linkage mechanism 56, the first rotating portion 552 of the rotating member 550 rotates relative to the base 54, and the second rotating portion 553 of the rotating member 550 is rotatably connected to the corresponding connecting member 555. The first adjusting shaft 5628 slides and rolls from the second adjusting end in the first adjusting groove 5230 to the first adjusting end. At the same time, the second adjusting shaft 5629 slides and rolls from the fourth adjusting end in the second adjusting groove 5232 to the third adjusting end. The two link members 562 rotate along the axis of the corresponding rotating shaft 561 and move away from each other to realize the mutual separation of the two side support members 523, so that the folding device 50 is unfolded. The foldable area 31 of the flexible screen 30 unfolds along with the folding device 50 until the flexible screen 30 is flattened.

[0082] During the flattening process of the electronic device 100, the frictional torques between the two cams 5720 and the two abutting cams 5731 respectively, the frictional torques of the first friction member 5770 and the second friction member 5775, the frictional resistance between the first damping portion 5617 of one rotating shaft 561 and the second damping portion 5737 of the first sliding cylinder 5730, and the frictional resistance between the first damping portion 5617 of the other rotating shaft 561 and the third damping portion 5767 of the second sliding cylinder 5760 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 can limit the two frames 21 at a specific angle between 0 degrees and 180 degrees.

[0083] In other bending methods of the electronic device 100, a force that pulls the two frames 21 outward can also be applied simultaneously. The two frames 21 drive the rotating mechanisms 55 on the opposite sides of the base 54 to rotate away from each other respectively, so as to drive the two link members 562 on the opposite sides of the base 54 to rotate away from each other, causing the two side support members 523 to rotate toward the side away from the flexible screen 30, and realizing the unfolding of the electronic device 100 through the folding device 50.

[0084] The folding device 50 of the electronic device 100 of the present invention realizes synchronous bending or unfolding through the folding assistance component 51. Since the elastic member 575 can provide a large axial force, there is a large frictional torque between the cam 5720 and the abutting cam 5731, the first friction member 5770 and the second friction member 5775 also have large frictional resistances, and the frictional resistances between the two first damping portions 5617 and the second damping portion 5737 and the third damping portion 5767 respectively; therefore, the electronic device 100 can be stably limited at a specific angle between 0 degrees and 180 degrees during bending, realizing the hovering function of the whole machine; secondly, the connection between the link member 562 and the side support member 523 of the folding device 50 is realized through the cooperation of the first adjustment shaft 5628 and the second adjustment shaft 5629 with the first adjustment groove 5230 and the second adjustment groove 5232 respectively, so as to expand the dimension in the axial length direction of the adjustment shaft and reduce the dimension in the axial thickness direction of the adjustment shaft, thereby reducing the thickness of the side support member 523 and the overall thickness of the folding device 50, which is beneficial to reducing the overall thickness of the electronic device 100.

[0085] The above is the implementation manner of the embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the embodiments of the present invention, several improvements and retouches can be made, and these improvements and retouches are also regarded as the protection scope of the present invention.

Claims

1. A folding device, characterized in that, The folding device includes: A base; A rotating mechanism, the rotating mechanism includes a rotating member and a connecting member, one end of the rotating member is rotatably connected to the base, and the end of the rotating member away from the base is rotatably connected to the connecting member; A linkage mechanism, the linkage mechanism includes a link member, the link member is rotatably connected to the base, and the end of the link member away from the base is slidably connected to the connecting member; and A bendable mechanism, the bendable mechanism includes a side support member, the link member and the side support member are connected by the cooperation of a first adjustment shaft and a first adjustment groove and the cooperation of a second adjustment shaft and a second adjustment groove, the axis of the first adjustment shaft is parallel to the axis of the second adjustment shaft at an interval, and the first adjustment groove and the second adjustment groove are offset from each other in the thickness direction of the side support member, wherein, the movement of the first adjustment shaft along the first adjustment groove can cause the side support member to rotate relative to the base and bend, and the movement of the second adjustment shaft along the second adjustment groove can cause the side support member to rotate relative to the base and flatten.

2. The folding device according to claim 1, wherein The side support member includes a side support plate and a support portion provided on the back surface of the side support plate, the first adjustment groove and the second adjustment groove are both provided on the support portion, the first adjustment shaft and the second adjustment shaft are both provided at the end of the link member away from the base, the first adjustment shaft is rollably inserted into the first adjustment groove, and the second adjustment shaft is rollably inserted into the second adjustment groove.

3. The folding device according to claim 2, characterized in that, An avoidance groove is provided at the end of the link member away from the base, the support portion is received in the avoidance groove, the first adjustment groove is provided on one side of the support portion, and the second adjustment groove is provided on the opposite side of the support portion; the first adjustment shaft is provided on one inner side surface of the avoidance groove, and the second adjustment shaft is provided on the opposite inner side surface of the avoidance groove.

4. The folding device according to claim 2, wherein The first adjustment groove is parallel to the second adjustment groove, and the first adjustment groove is farther away from the side support plate than the second adjustment groove.

5. The folding device according to claim 2, wherein The support portion includes a first side surface and a second side surface arranged opposite to each other, and a back surface facing away from the side support plate, the first adjustment groove is provided on the first side surface and penetrates through the back surface; a support edge is provided on the side of the second side surface away from the side support plate, and the support edge and the second side surface enclose the second adjustment groove.

6. The folding device according to claim 1, wherein The first adjustment groove has a first adjustment surface, the second adjustment groove has a second adjustment surface, the first adjustment surface is parallel to the second adjustment surface, the outer peripheral surface of the first adjustment shaft slides and rolls on the first adjustment surface, and the outer peripheral surface of the second adjustment shaft slides and rolls on the second adjustment surface.

7. The folding device according to claim 1, wherein The linkage mechanism includes two of the link members, one of the link members being rotatably connected to one side of the base, and the other link member being rotatably connected to the opposite side of the base; the bendable mechanism includes two of the side support members, one of the side support members and one of the link members being connected by the cooperation of the first adjustment shaft and the corresponding first adjustment groove and the cooperation of one of the second adjustment shafts and the corresponding second adjustment groove, and the other side support member and the other link member being connected by the cooperation of the other first adjustment shaft and the corresponding first adjustment groove and the cooperation of the other second adjustment shaft and the corresponding second adjustment groove.

8. The folding device according to claim 7, characterized in that, The linkage mechanism further includes a pair of spaced-apart and parallel rotating shafts, and a gear assembly disposed between the two link members, one of the link members being connected to one side of the base by one of the rotating shafts, and the other link member being connected to the opposite side of the base by the other rotating shaft, the gear assembly including a driving gear disposed on each of the link members and a synchronous gear located between the two driving gears, each driving gear meshing with the corresponding synchronous gear.

9. The folding device according to claim 8, characterized in that It further includes a limiting mechanism, the limiting mechanism including a pushing member, a holding member and an elastic member disposed on the link member, the pushing member including a cam sleeved on the rotating shaft, the holding member including a cam abutting against the cam sleeved on the rotating shaft, the cam and the cam abutting against the cam on the same rotating shaft being coaxial and cooperating with each other, and the elastic member being used to push the holding member so that the cam rotatably abuts against the cam abutting against the cam.

10. The folding device according to claim 9, characterized in that, The holding member further includes a first sliding cylinder sleeved on the rotating shaft, the cam abutting against the cam being disposed at one end of the first sliding cylinder, one of the inner peripheral surface of the first sliding cylinder and the outer peripheral surface of the rotating shaft being provided with a first damping portion, and the other being provided with a second damping portion, the first damping portion and the second damping portion abutting against each other.

11. The folding device according to claim 9, characterized in that, The limiting mechanism further includes a positioning member, the positioning member including a second sliding cylinder sleeved on the rotating shaft, one of the inner peripheral surface of the second sliding cylinder and the outer peripheral surface of the rotating shaft being provided with a first damping portion, and the other being provided with a third damping portion, the first damping portion and the third damping portion abutting against each other.

12. The folding device according to claim 11, characterized in that, The limiting mechanism further includes a first friction member and a gasket, both the first friction member and the gasket being connected to the rotating shaft, the first friction member being clamped by the positioning member and the gasket, and the first friction member being capable of rotating relative to the positioning member and the gasket along with the rotating shaft.

13. The folding device according to claim 12, characterized in that, The limiting mechanism further includes a second friction member and a buckle, both the second friction member and the buckle being connected to the rotating shaft, the second friction member being clamped by the buckle and the gasket, and the second friction member being capable of rotating relative to the gasket along with the rotating shaft.

14. A folding housing, characterized in that, The folding housing includes the folding device according to any one of claims 1-13 and two frames, the folding device being located between the two frames, and the two frames being respectively connected to opposite sides of the folding device.

15. An electronic device, characterized in that, The electronic device includes a flexible screen and a folding housing as described in claim 14, and the flexible screen is disposed on the folding housing.

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