Folding device, folding shell and electronic equipment

Abstract

The invention provides a folding device which comprises a base, a rotation assisting mechanism and a rotating mechanism, the rotation assisting mechanism comprises a rotation assisting base and a rotation assisting piece, the rotation assisting base is fixed to the base, and the rotation assisting piece is rotationally connected to the base; the rotating mechanism comprises a rotating piece and a connecting piece rotationally connected to the rotating piece, the end, away from the connecting piece, of the rotating piece is rotationally connected to the rotation assisting piece, the rotating piece further slides and is rotationally connected to the rotation assisting base, and in the rotating process of the rotating piece relative to the base, the rotation assisting piece rotates around a first axis relative to the base; the rotating piece rotates around a second axis relative to the rotation assisting piece, slides relative to the rotation assisting base and rotates around a third axis; the first axis, the second axis and the third axis are parallel at intervals. The invention further provides a folding shell provided with the folding device and electronic equipment.

Description

Technical Field

[0001] The present invention relates to the field of electronic devices, 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] Currently, folding electronic products with bendable flexible display screens are increasingly popular among people. The bendable flexible display screens of folding electronic products in the prior art generally use hinge mechanisms for support. In order to make folding electronic products thinner and lighter, the size of the hinge mechanism needs to be increasingly miniaturized, so as to leave more space for the battery or main board of the folding electronic product, etc. However, limited by the small size, the connection and cooperation amount between the components of the existing hinge mechanism is small, which easily leads to jamming problems during the unfolding process of the hinge mechanism, and in severe cases, the hinge mechanism may be stuck and fail. Summary of the Invention

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

[0004] A folding device provided by the present application includes a base, an assisting rotation mechanism, and a rotating mechanism. The assisting rotation mechanism includes an assisting rotation base and an assisting rotation member. The assisting rotation base is fixed to the base, and the assisting rotation member is rotatably connected to the base. The rotating mechanism includes a rotating member and a connecting member rotatably connected to the rotating member. One end of the rotating member away from the connecting member is rotatably connected to the assisting rotation member, and the rotating member is also slidably and rotatably connected to the assisting rotation base. Wherein, during the rotation of the rotating member relative to the base, the assisting rotation member rotates relative to the base around a first axis, the rotating member rotates relative to the assisting rotation member around a second axis, and the rotating member slides and rotates relative to the assisting rotation base around a third axis; the first axis, the second axis, and the third axis are parallel to each other at intervals.

[0005] The present application further provides a folding housing, which includes a folding device and two frames. The folding device includes a base, an assisting rotation mechanism and a rotating mechanism. The assisting rotation mechanism includes an assisting rotation base and an assisting rotation member. The assisting rotation base is fixed to the base, and the assisting rotation member is rotatably connected to the base. The rotating mechanism includes a rotating member and a connecting member rotatably connected to the rotating member. One end of the rotating member away from the connecting member is rotatably connected to the assisting rotation member, and the rotating member is also slidably and rotatably connected to the assisting rotation base. Wherein, during the rotation of the rotating member relative to the base, the assisting rotation member rotates relative to the base around a first axis, the rotating member rotates relative to the assisting rotation member around a second axis, and the rotating member slides and rotates relative to the assisting rotation base around a third axis. The first axis, the second axis and the third axis are parallel to each other at intervals. The folding device is located between the two frames, and the two frames are respectively connected to the connecting members on the opposite sides of the folding device.

[0006] The present application further 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, an assisting rotation mechanism and a rotating mechanism. The assisting rotation mechanism includes an assisting rotation base and an assisting rotation member. The assisting rotation base is fixed to the base, and the assisting rotation member is rotatably connected to the base. The rotating mechanism includes a rotating member and a connecting member rotatably connected to the rotating member. One end of the rotating member away from the connecting member is rotatably connected to the assisting rotation member, and the rotating member is also slidably and rotatably connected to the assisting rotation base. Wherein, during the rotation of the rotating member relative to the base, the assisting rotation member rotates relative to the base around a first axis, the rotating member rotates relative to the assisting rotation member around a second axis, and the rotating member slides and rotates relative to the assisting rotation base around a third axis. The first axis, the second axis and the third axis are parallel to each other at intervals. The folding device is located between the two frames, and the two frames are respectively connected to the connecting members on the opposite sides of the folding device. The flexible screen is disposed on the folding housing.

[0007] One end of the rotating member of the electronic device of the present application, which is far from the connecting member, is rotatably connected to the base through an assisting rotating member. The rotating member and the assisting rotating member are rotatably connected through a rotating shaft and a corresponding rotating hole. One end of the rotating member, which is far from the connecting member, is slidably connected to the assisting base through an assisting rotating shaft and an assisting rotating groove. The axis of the rotating shaft is farther from the connecting member than the axis of the assisting rotating shaft. During the folding or unfolding process of the electronic device, the rotating member rotates relative to the assisting rotating member, and at the same time, the rotating member and the assisting rotating member rotate together relative to the base. Since the rotating member and the assisting rotating member rotate multiple times relative to the base, when the folding device is in a fully folded state, the amount of rotation of the assisting rotating member relative to the base becomes smaller, that is, the overlapping amount of the assisting rotating member and the base is larger, so as to avoid jamming or jamming failure problems during the unfolding process of the folding device, make the folding or unfolding of the electronic device smoother, and improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

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

[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 folding housing and the flexible screen of the electronic device in;

[0011] Figure 3 is Figure 2 a schematic exploded perspective view of the folding housing in;

[0012] Figure 4 is Figure 3 a schematic exploded perspective view of the folding housing from another perspective in;

[0013] Figure 5 is Figure 3 a schematic perspective view of the folding device in;

[0014] Figure 6 is Figure 5 a schematic exploded perspective view of the folding device in;

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

[0016] Figure 8 is Figure 7 a schematic exploded perspective view of the folding device in;

[0017] Figure 9 is Figure 6 a three-dimensional structural schematic diagram of one of the folding assistance components in

[0018] Figure 10 is Figure 9 a three-dimensional structural schematic diagram of another perspective of the folding assistance component in

[0019] Figure 11 is Figure 9 a three-dimensional structural exploded schematic diagram of the folding assistance component in

[0020] Figure 12 is Figure 10 a three-dimensional structural exploded schematic diagram of the folding assistance component in

[0021] Figure 13 is Figure 11 a further three-dimensional structural exploded schematic diagram of the rotation assistance mechanism and the rotation mechanism in

[0022] Figure 14 is Figure 12 a further three-dimensional structural exploded schematic diagram of the folding assistance mechanism and the rotation mechanism in

[0023] Figure 15 is Figure 13 a magnified three-dimensional structural exploded view of the rotation assistance mechanism and the base in

[0024] Figure 16 is Figure 14 a three-dimensional structural exploded schematic diagram of the rotation assistance mechanism and the base in

[0025] Figure 17 is Figure 11 a three-dimensional structural schematic diagram of the linkage mechanism and the limiting mechanism in

[0026] Figure 18 is Figure 17 a three-dimensional structural schematic diagram of another perspective of the linkage mechanism and the limiting mechanism in

[0027] Figure 19 is Figure 17 a three-dimensional structural exploded schematic diagram of the linkage mechanism and the limiting mechanism in

[0028] Figure 20 is Figure 18 a three-dimensional structural exploded schematic diagram of the linkage mechanism and the limiting mechanism in

[0029] Figure 21 is Figure 9 one of the three-dimensional cross-sectional views of the folding assistance component in

[0030] Figure 22 isFigure 9 Another perspective of the folding assisting component in

[0031] Figure 23 is Figure 9 Another perspective of the folding assisting component in

[0032] Figure 24 is Figure 9 Another perspective of the folding assisting component in

[0033] Figure 25 is Figure 9 Another perspective of the folding assisting component in

[0034] Figure 26 is Figure 1 Schematic perspective view of the folded state of the electronic device in

[0035] Figure 27 is Figure 26 Schematic view of the folding process of the electronic device in

[0036] Figure 28 is Figure 26 Schematic perspective view of the folding device in

[0037] Figure 29 is Figure 28 Another perspective of the folding device in

[0038] Figure 30 is Figure 28 One perspective of the folding device in

[0039] Figure 31 is Figure 28 Another perspective of the folding device in

[0040] Figure 32 is Figure 28 Another perspective of the folding device in

[0041] Figure 33 is Figure 28 Another perspective of the folding device in

[0042] Figure 34 is Figure 28 Another perspective of the folding device in

[0043] Main reference numerals description:

[0044] 100, Electronic device; 20, Folding housing; 21, Frame; 211, Front; 212, Back; 214, Side; 215, End face; 216, Positioning groove; 217, Mounting portion; 218, Fixing hole; 30, Flexible screen; 31, Bendable area; 33, Non-bendable area; 50, Folding device; 51, Folding assistance component; 52, Support mechanism; 521, Middle support member; 5212, Connection hole; 523, Side support member; 5232, Connection area; 5233, First connection portion; 5234, Rotation groove; 5236, Second connection portion; 5237, Adjustment groove; 5237a, First positioning section; 5237b, Second positioning section; 53, Base; 532, Arc groove; 530, First housing; 5302, First avoidance groove; 5304, Positioning hole; 5305, Rotation hole; 5306, Connection hole; 5307, Fixing hole; 531, Second housing; 5312, Second avoidance groove; 54, Rotation assistance mechanism; 540, Rotation assistance base; 5401, Rotation assistance groove; 5402, Fixing portion; 5403, First positioning end; 5404, Second positioning end; 5405, Connection portion; 5406, Guiding rotation groove; 5407, Fixing hole; 541, Rotation assistance member; 5410, Rotation hole; 5411, Arc track; 5413, Rotation assistance portion; 55, Rotation mechanism; 550, Rotating member; 5501, Rotation shaft; 5503, Rotation assistance shaft; 551, Shaft; 552, First rotating portion; 5521, Receiving groove; 553, Second rotating portion; 5530, Receiving opening; 5533, Rotating cylinder; 5534, First shaft hole; 555, Connecting member; 5550, Slide groove; 5551, Receiving groove; 5553, Positioning cylinder; 5555, Second shaft hole; 5556, Rotation track; 5557, Avoidance groove; 56, Linkage mechanism; 561, Connecting shaft; 5610, Shaft body; 5612, Connecting cap; 5613, Clamping portion; 5616, Card slot; 562, Link member; 5620, Guide rail; 5621, Driving gear; 5622, Sleeve; 5623, Sliding portion; 5624, Shaft hole; 5626, First limiting surface; 5627, Second limiting surface; 5628, Adjusting shaft; 564, Gear combination; 5642, Linkage gear; 5644, Rotation shaft; 565, Fixing member; 5652, First guiding slide hole; 5654, First supporting hole; 5656, Positioning portion; 5657, Positioning rod; 57, Limiting mechanism; 572, Pushing member; 5720, First cam; 5724, First protruding portion; 5725, First recessed portion; 573, Holding member; 5730, Second cam; 5732, Connection portion; 5734, Second protruding portion; 5735, Second recessed portion; 5736, Second supporting hole; 575, Elastic member; 576, Positioning member; 5761, Guide sliding piece; 5763, Extension portion; 5765, Second guiding slide hole; 5767, Avoidance hole; 5768, First anti-sliding portion; 577, Friction assembly; 5770, First friction member;5772, the first positioning hole; 5774, the second anti-slip part; 5775, the second friction part; 5776, the second positioning hole; 5778, the fourth anti-slip part; 578, the gasket; 5782, the through hole; 5784, the third anti-slip part; 579, the buckle; 59, the back shell; 592, the connecting part; 594, the connecting column; 5942, the connecting hole; Detailed implementation manners

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0046] 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. The directional terms mentioned in the present application, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", etc., are only references to the directions in 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 to the present application.

[0047] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", and "set on..." should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be 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.

[0048] Please refer to Figures 1 to 12, the 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. Opposite sides of the folding device 50 are respectively connected to the two frames 21, and the flexible screen 30 is disposed on the front surfaces of the two frames 21 and the front surface of the folding device 50. The flexible screen 30 includes a bendable area 31 facing the front surface of the folding device 50, and two non-bendable areas 33 connected to opposite sides of the bendable area 31. The two non-bendable areas 33 are respectively connected to the front surfaces of the two frames 21.The folding device 50 is used to support the bendable area 31 of the flexible screen 30. The folding device 50 includes a folding assist component 51, a support mechanism 52 connected to the front of the folding assist component 51, and a back shell 59 connected to the back of the folding assist component 51. The folding assist component 51 includes a base 53, a rotation assist mechanism 54, a rotation mechanism 55, a linkage mechanism 56, and a limit mechanism 57. The rotation assist mechanism 54 includes a rotation assist base 540 and a rotation assist member 541. The rotation assist base 540 is fixed to the base 53, and the rotation assist member 541 is rotatably connected to the base 53. In this embodiment, the rotation assist member 541 and the base 53 are rotatably connected through the cooperation of an arc track and an arc groove. The arc track is provided on one of the rotation assist member 541 and the base 53, and the arc groove is provided on the other of the rotation assist member 541 and the base 53. Specifically, an arc track 5411 is provided on the side of the rotation assist member 541 away from the rotation assist base 540, and an arc groove 532 is provided on the base 53. The arc track 5411 is rotatably received in the arc groove 532. The rotation mechanism 55 includes a rotating member 550 and a connecting member 555 rotatably connected to the rotating member 550. The end of the rotating member 550 away from the connecting member 555 is rotatably connected to the rotation assist member 541. In this embodiment, the end of the rotating member 550 away from the connecting member 555 and the rotation assist member 541 are rotatably connected through the cooperation of a rotating shaft and a rotating hole. The rotating shaft is provided on one of the rotating member 550 and the rotation assist member 541, and the rotating hole is provided on the other of the rotating member 550 and the rotation assist member 541. Specifically, a rotating shaft 5501 is provided at the end of the rotating member 550 away from the connecting member 555, and a rotating hole 5410 is provided on the rotation assist member 541. The rotating shaft 5501 is rotatably inserted into the rotating hole 5410. The rotating member 550 is also slidably and rotatably connected to the rotation assist base 540. In this embodiment, the rotating member 550 and the rotation assist base 540 are slidably and rotatably connected through the cooperation of a rotation assist shaft and a rotation assist groove. Specifically, a rotation assist shaft 5503 is provided at the end of the rotating member 550 away from the connecting member 555, and a rotation assist groove 5401 is provided on the rotation assist base 540. The rotation assist shaft 5503 is slidably and rotatably inserted through the rotation assist groove 5401. Among them, during the rotation of the rotating member 550 relative to the base 53, the rotation assist member 541 rotates relative to the base 53 about the first axis O1, the rotating member 550 rotates relative to the rotation assist member 541 about the second axis O2, the rotating shaft 5501 is collinear with the second axis O2, the rotating member 550 slides relative to the rotation assist base 540 and rotates about the third axis O3, and the rotation assist shaft 5503 is collinear with the third axis O3. The first axis O1, the second axis O2, and the third axis O3 are parallel to each other at intervals. In this embodiment, during the rotation of the rotating member 550 relative to the base 53, the rotation assist shaft 5503 slides and rotates along the rotation assist groove 5401, the rotating shaft 5501 rotates in the rotating hole 5410, and the rotating shaft 5501 and the rotation assist member 541 rotate together about the first axis LL relative to the base 53. The second axis O2 is farther from the connecting member 555 than the first axis O1, and the second axis O2 is farther from the connecting member 555 than the third axis O3.

[0049] In this embodiment, rotating mechanisms 55 are respectively provided on the opposite sides of the base 53. The rotating member 550 of one of the rotating mechanisms 55 is slidably connected to one end of the auxiliary rotating base 540 through the cooperation of the auxiliary rotating shaft 5503 and the auxiliary rotating groove 5401. The rotating member 550 of the other rotating mechanism 55 is slidably connected to the opposite end of the auxiliary rotating base 540 through the cooperation of the auxiliary rotating shaft 5503 and the auxiliary rotating groove 5401. An auxiliary rotating member 541 is provided between each rotating member 550 and the base 53. Each rotating member 550 is rotatably connected to the corresponding auxiliary rotating member 541 through the cooperation of the rotating shaft 5501 and the rotating hole 5410. Each auxiliary rotating member 541 is rotatably connected to the base 53 through the cooperation of the arc rail 5411 and the arc groove 532. Specifically, auxiliary rotating members 541 are respectively provided on the opposite sides of the base 53. Each auxiliary rotating member 541 is rotatably connected to the base 53 through the cooperation of the arc rail 5411 and the arc groove 532. Auxiliary rotating grooves 5401 are respectively provided at the opposite ends of the auxiliary rotating base 540. The auxiliary rotating shaft 5503 of one of the rotating members 550 is slidably inserted into one of the auxiliary rotating grooves 5401. The auxiliary rotating shaft 5503 of the other rotating member 550 is slidably inserted into the other auxiliary rotating groove 5401. And each rotating member 550 is rotatably connected to the corresponding auxiliary rotating member 541 through the cooperation of the rotating shaft 5501 and the rotating hole 5410.

[0050] During the folding or unfolding process of the folding device 50, the rotation axis 5501 of the rotating member 550 rotates in the rotation hole 5410 of the corresponding rotation assisting member 541, that is, the rotating member 550 rotates relative to the rotation assisting member 541; at the same time, the rotation assisting shaft 5503 slides along the corresponding rotation assisting groove 5401, so that the rotation axis 5501 and the rotation assisting member 541 rotate around the axis of the arc track 5411 relative to the base 53 together. Specifically, when the folding device 50 is folded, the rotating member 550 rotates relative to the rotation assisting member 541 around the axis of the rotation axis 5501 toward the side close to the flexible screen 30. At the same time, the rotation assisting shaft 5503 slides along the corresponding rotation assisting groove 5401, so that the rotating member 550 and the rotation assisting member 541 rotate relative to the base 53 in the first rotation direction together until the folding device 50 is folded into a fully folded state; when the folding device 50 is unfolded, the rotating member 550 rotates relative to the rotation assisting member 541 around the axis of the rotation axis 5501 toward the side away from the flexible screen 30. At the same time, the rotation assisting shaft 5503 slides along the corresponding rotation assisting groove 5401, so that the rotating member 550 and the rotation assisting member 541 rotate relative to the base 53 in the second rotation direction together until the folding device 50 is unfolded into a flattened state, and the first rotation direction is opposite to the second rotation direction. The support mechanism 52 folds or unfolds along with the folding device 50, the two frames 21 are folded or unfolded through the folding device 50, and the flexible screen 30 can be bent or flattened along with the folding housing 20. 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.

[0051] It should be noted that the front refers to the surface with the same light-emitting surface orientation as the flexible screen 30, the back refers to the surface with the opposite light-emitting surface orientation to the flexible screen 30, and the specific angle refers to the angle between the fronts of the two frames 21 within the range of 0 degrees to 180 degrees. The electronic device 100 is, for example, but not limited to, mobile phones, tablet computers, monitors, liquid crystal panels, OLED panels, TVs, smart watches, VR head-mounted displays, in-vehicle displays 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.

[0052] One end of the rotating member 550 of the electronic device 100 of the present invention, which is far from the connecting member 555, is rotatably connected to the base 53 through an assisting rotating member 541. The rotating member 550 and the assisting rotating member 541 are rotatably connected through a rotating shaft 5501 and a corresponding rotating hole 5410. One end of the rotating member 550, which is far from the connecting member 555, is slidably connected to the assisting base 540 through an assisting rotating shaft 5503 and an assisting rotating groove 5401. The axis of the rotating shaft 5501 is farther from the connecting member 555 than the axis of the assisting rotating shaft 5503. During the folding or unfolding process of the electronic device 100, the rotating member 550 rotates relative to the assisting rotating member 541, and at the same time, the rotating member 550 and the assisting rotating member 541 rotate together relative to the base 53. Since the rotating member 550 and the assisting rotating member 541 rotate multiple times relative to the base 53, when the folding device 50 is in the fully folded state, the rotation amount of the assisting rotating member 541 relative to the base 53 becomes smaller, that is, the overlapping amount of the arc track 5411 of the assisting rotating member 541 and the arc groove 532 is larger, so as to avoid jamming problems or jamming and failure problems during the unfolding process of the folding device 50, making the folding or unfolding of the electronic device 100 smoother and improving the user experience.

[0053] As Figure 3 and Figure 4 As 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 one side of the front surface 211 close to the folding device 50. Opposite ends of the positioning groove 216 extend to be close to the two side surfaces 214 respectively. One side of the positioning groove 216 penetrates through the end surface 215 facing the folding device 50. Mounting portions 217 are respectively provided at opposite ends of the frame 21 in the positioning groove 216, and a plurality of fixing holes 218 penetrating through the back surface 212 are provided in the mounting portions 217.

[0054] In this embodiment, the assisting folding assembly 51 includes two rotating mechanisms 55. One end of the rotating member 550 of one rotating mechanism 55, which is far from the connecting member 555, is rotatably connected to one side of the base 53 through one assisting rotating member 541 and the assisting base 540. One end of the rotating member 550 of the other rotating mechanism 55, which is far from the connecting member 555, is rotatably connected to the opposite side of the base 53 through the other assisting rotating member 541 and the assisting base 540. At least one assisting folding assembly 51 is provided on the back surface of the supporting mechanism 52. In this embodiment, assisting folding assemblies 51 are respectively provided at opposite ends of the back surface of the supporting mechanism 52. In other embodiments, three or more assisting folding assemblies 51 are provided on the back surface of the supporting mechanism 52, and the three or more assisting folding assemblies 51 are arranged along the length direction of the supporting mechanism 52.

[0055] As Figures 3 - 8As shown, the support mechanism 52 includes a middle support member 521 and two side support members 523 located on opposite sides of the middle support member 521. The two side support members 523 are respectively movably connected to two rotating mechanisms 55 and a linkage mechanism 56, and the side support members 523 rotate relative to the middle support member 521 through the rotating mechanisms 55 and the linkage mechanism 56. The back surface of the flexible screen 30 is attached to the front surfaces of the middle support member 521 and the side support members 523. The side rotating mechanism 55 on one side rotates relative to the base 53, and drives the side support member 523 on the other side to rotate synchronously relative to the base 53 through the linkage mechanism 56, so as to realize the synchronous unfolding or synchronous bending of the support mechanism 52, and complete the synchronous folding or synchronous unfolding of the folding device 50. The middle support member 521 is a strip-shaped connecting piece, and connecting holes 5212 are respectively provided at opposite ends of the front surface of the connecting piece. The locking member passes through the connecting holes 5212 and is connected to the base 53, so that the middle support member 521 is connected to the base 53. Each side support member 523 includes a strip-shaped support plate and a connecting area 5232 provided on the back surface of the support plate. In this embodiment, two connecting areas 5232 are provided on the back surface of the support plate, and the two connecting areas 5232 are located at opposite ends of the hinge body. The connecting area 5232 is used to connect the corresponding rotating mechanism 55. Each connecting area 5232 includes a pair of first connecting portions 5233 and second connecting portions 5236 that are spaced apart from each other. The first connecting portions 5233 are provided on the side away from the middle support member 521. In this embodiment, each second connecting portion 5236 is located between a corresponding pair of first connecting portions 5233. A pair of arc-shaped rotating grooves 5234 are provided on each pair of first connecting portions 5233, and the axes of the pair of rotating grooves 5234 are collinear. An arc-shaped adjusting groove 5237 is provided on the second connecting portion 5236, and the middle of the adjusting groove 5237 bends toward the side away from the hinge body. The adjusting groove 5237 includes a first positioning section 5237a and a second positioning section 5237b located at opposite ends thereof, and the first positioning section 5237a is closer to the middle support member 521 than the second positioning section 5237b. The back shell 59 is a strip-shaped frame, and connecting portions 592 are respectively provided at opposite ends of the front surface of the back shell 59. The bases 53 of the two folding assisting components 51 are respectively connected to the two connecting portions 592 of the back shell 59. The connecting portion 592 includes a plurality of connecting columns 594, and each connecting column 594 is provided with a connecting hole 5942 along its axial direction.

[0056] Please refer to Figures 11 - 16, the rotating member 550 includes a first rotating portion 552 and a second rotating portion 553. The first rotating portion 552 and the second rotating portion 553 are respectively disposed at opposite ends of the rotating member 550. The first rotating portion 552 is rotatably connected to the base 53 through the assisting rotating member 541 and the assisting rotating base 540, and the second rotating portion 553 is rotatably connected to the connecting member 555 through the rotating shaft 551. Specifically, the base 53 and the assisting rotating member 541 are rotatably connected through the cooperation of the arc track 5411 and the arc groove 532; the assisting rotating member 541 and the first rotating portion 552 are rotatably connected through the cooperation of the rotating shaft 5501 and the rotating hole 5410. The axes of the arc tracks 5411 of each assisting rotating member 541 are parallel and spaced apart from the axis of the rotating hole 5410.

[0057] The base 53 includes a first base body 530 and a second base body 531. The assisting rotating base 540 is located between the first base body 530 and the second base body 531. An assisting rotating member 541 is provided between the first base body 530 and the assisting rotating base 540, and / or an assisting rotating member 541 is provided between the second base body 531 and the assisting rotating base 540. The first base body 530 and the corresponding assisting rotating member 541 are rotatably connected through the cooperation of the arc track 5411 and the arc groove 532, and the second base body 531 and the corresponding assisting rotating member 541 are rotatably connected through the cooperation of the arc track 5411 and the arc groove 532. The axes of the two arc grooves 532 on the same side of the base 53 are collinear; one side of the rotating member 550 and one of the assisting rotating members 541 are rotatably connected through the cooperation of the rotating shaft 5501 and the rotating hole 5410, and the opposite side of the rotating member 550 and the other assisting rotating member 541 are rotatably connected through the cooperation of the rotating shaft 5501 and the rotating hole 5410. The two rotating shafts 5501 are coaxial.

[0058] In this embodiment, auxiliary rotation grooves 5401 are respectively provided on opposite sides of the auxiliary rotation base 540. The auxiliary rotation shafts 5503 of one of the rotating members 550 are slidably inserted into one of the auxiliary rotation grooves 5401, and the auxiliary rotation shafts 5503 of the other rotating member 550 are slidably inserted into the other auxiliary rotation groove 5401. An auxiliary rotation member 541 is provided between the first base body 530 and each first rotation part 552. The auxiliary rotation member 541 is rotationally connected to the first base body 530 through the cooperation of an arc track and an arc groove, and the auxiliary rotation member 541 is rotationally connected to the first rotation part 552 through the cooperation of a rotation shaft 5501 and a rotation hole 5410; an auxiliary rotation member 541 is provided between the second base body 531 and each first rotation part 552. The auxiliary rotation member 541 is rotationally connected to the second base body 531 through the cooperation of an arc track and an arc groove, and the auxiliary rotation member 541 is rotationally connected to the first rotation part 552 through the cooperation of a rotation shaft 5501 and a rotation hole 5410; specifically, rotation shafts 5501 are respectively provided on opposite sides of one end of the first rotation part 552 away from the second rotation part 553, and the two rotation shafts 5501 are coaxial. Auxiliary rotation members 541 are respectively provided on opposite sides of the first rotation part 552, and each auxiliary rotation member 541 is provided with a rotation hole 5410. The two rotation shafts 5501 are respectively inserted into the two rotation holes 5410; the two arc tracks on the same side of the base 53 are coaxial, and the axis of the rotation shaft 5501 is spaced and parallel to the axis of the arc track.

[0059] Optionally, an avoidance groove is provided on the front surface of the base 53. One end of the assisting rotation member 541 and the rotating member 550 away from the connecting member 555 is received in the avoidance groove. An arc groove 532 is provided on the base 53 and communicates with the avoidance groove. An arc rail 5411 is provided on the assisting rotation member 541, and the arc rail 5411 is rotatably received in the arc groove 532. A rotation hole 5410 is provided on the side surface of the assisting rotation member 541 facing the rotating member 550, and a rotation shaft 5501 is provided at one end of the rotating member 550 away from the connecting member 555. A first avoidance groove 5302 is provided on the front surface of the first base body 530, and a second avoidance groove 5312 is provided on the front surface of the second base body 531. The first avoidance groove 5302 is used to receive one of the assisting rotation members 541, and the second avoidance groove 5312 is used to receive the other assisting rotation member 541. Specifically, on the front surface of the first base body 530, at both sides near one end close to the assisting rotation base 540, the first avoidance grooves 5302 are respectively provided. One of the arc grooves 532 is provided on the end surface of one of the first avoidance grooves 5302 of the first base body 530, and the other arc groove 532 is provided on the end surface of the other first avoidance groove 5302 of the first base body 530. The axes of the two arc grooves 532 are spaced and parallel. At both opposite ends of each arc groove 532, they penetrate through the front surface of the first base body 530. Optionally, the inner surface of the first avoidance groove 5302 is an arc surface, and the axis of the arc groove 532 of the first base body 530 is spaced and parallel to the axis of the inner surface of the first avoidance groove 5302. Positioning holes 5304 are respectively provided on the front surface of the first base body 530. After the locking member passes through the positioning holes 5304, it is locked to the back shell so that the base 53 is fixedly connected to the back shell. On the end surface of the first base body 530 facing away from the assisting rotation base 540, two rotation holes 5305, two connection holes 5306 and a fixing hole 5307 are provided. The two rotation holes 5305 are located on both opposite sides of the first base body 530, the two connection holes 5306 are located between the two rotation holes 5305, and the fixing hole 5307 is located between the two connection holes 5306. The axes of the two rotation holes 5305 and the two connection holes 5306 are parallel to the rotation axis between the rotating member 550 and the base 53. On the front surface of the second base body 531, at both sides near one end close to the assisting rotation base 540, the second avoidance grooves 5312 are respectively provided. One of the arc grooves 532 is provided on the end surface of one of the second avoidance grooves 5312 of the second base body 531, and the other arc groove 532 is provided on the end surface of the other second avoidance groove 5312 of the second base body 531. At both opposite ends of the arc groove 532, they penetrate through the front surface of the second base body 531; optionally, the inner surface of the second avoidance groove 5312 is an arc surface, and the axis of the arc groove 532 on the same side of the second base body 531 is spaced and parallel to the axis of the inner surface of the second avoidance groove 5312. The first avoidance groove 5302 and the second avoidance groove 5312 on the same side of the base 53 enclose the avoidance groove of the base 53 as described above.

[0060] The auxiliary rotation base 540 includes a fixing part 5402 fixed to the base 53 and a connecting part 5405 provided on the fixing part 5402. An auxiliary rotation groove 5401 is provided on the connecting part 5405. An auxiliary rotation shaft 5503 is provided on the first rotating part 552. The auxiliary rotation shaft 5503 is slidably and rotatably inserted through the auxiliary rotation groove 5401. In this embodiment, the fixing part 5402 is a rectangular block. Connecting parts 5405 are respectively provided at opposite ends of the front surface of the fixing part 5402. An arc-shaped auxiliary rotation groove 5401 is provided on each connecting part 5405. Opposite sides of the auxiliary rotation groove 5401 respectively penetrate through opposite side surfaces of the connecting part 5405. The auxiliary rotation groove 5401 includes a first positioning end 5403 and a second positioning end 5404 located at its opposite ends. The middle part of the auxiliary rotation groove 5401 bends towards the fixing part 5402. The first positioning end 5403 on the same connecting part 5405 is closer to the middle part of the fixing part 5402 than the second positioning end 5404, and the first positioning end 5403 is farther from the front surface of the base 53 than the second positioning end 5404, that is, the second positioning end 5404 is closer to the front surface of the connecting part 5405 than the first positioning end 5403. The fixing part 5402 is provided with a guiding rotation groove 5406 communicating with the avoidance groove. Specifically, guiding rotation grooves 5406 are respectively provided on opposite sides of each connecting part 5405 on the front surface of the fixing part 5402. The first rotating part 552 is rotatably received in the guiding rotation groove 5406. Fixing holes 5407 are provided in the middle of the two connecting parts 5405 on the front surface of the fixing part 5402.

[0061] The auxiliary rotation member 541 further includes an auxiliary rotation part 5413. An arc track 5411 is provided on the auxiliary rotation part 5413. The auxiliary rotation part 5413 is a semi-circular plate. The arc track 5411 is provided on one side surface of the auxiliary rotation part 5413. A rotation hole 5410 is provided on the side surface of the auxiliary rotation part 5413 facing away from the arc track 5411. The rotation hole 5410 is provided at one end of the auxiliary rotation part 5413 close to the corresponding arc track 5411 and away from the connecting member 555; when the arc track 5411 of the auxiliary rotation member 541 is received in the arc groove 532, the rotation hole 5410 is close to the middle part of the base 53. Specifically, when the arc tracks 5411 of the two auxiliary rotation members 541 are respectively received in the two arc grooves 532 of the first seat body 530, the rotation holes 5410 of the two auxiliary rotation members 541 approach each other; when the arc tracks 5411 of the two auxiliary rotation members 541 are respectively received in the two arc grooves 532 of the second seat body 531, the rotation holes 5410 of the two auxiliary rotation members 541 approach each other.

[0062] In other embodiments, an arc track is provided on the end surface of the first seat body 530 facing each first avoidance groove 5302, and an arc groove is provided on the side surface of the auxiliary rotation member 541 facing the first seat body 530. The arc track is rotatably received in the arc groove; an arc track is provided on the end surface of the second seat body 531 facing each second avoidance groove, and an arc groove is provided on the side surface of the auxiliary rotation member 541 facing the second seat body 531. The arc track is rotatably received in the arc groove.

[0063] One end of the rotating member 550 away from the connecting member 555 is provided with a receiving groove 5521. Specifically, one end of the first rotating portion 552 away from the second rotating portion 553 is provided with a receiving groove 5521, the connecting portion 5405 is received in the receiving groove 5521, the auxiliary rotating shaft 5503 is located in the receiving groove 5521 and at least one end of the auxiliary rotating shaft 5503 is connected to one of the opposite side surfaces of the receiving groove 5521; in this embodiment, the opposite ends of the auxiliary rotating shaft 5503 are respectively connected to the opposite side surfaces of the receiving groove 5521. The rotating shaft 5501 is provided on the first rotating portion 552, and the rotating shaft 5501 is farther away from the second rotating portion 553 than the auxiliary rotating shaft 5503; specifically, the auxiliary rotating shafts 5503 are respectively provided on the opposite sides of one end of the first rotating portion 552 away from the second rotating portion 553, and the two auxiliary rotating shafts 5503 are coaxial. Optionally, the first rotating portion 552 is an arc-shaped block, the second rotating portion 553 is connected to one side of the arc-shaped block, the auxiliary rotating shaft 5503 is close to one end of the arc-shaped block away from the second rotating portion 553, and the auxiliary rotating shaft 5503 is close to the middle of the outer peripheral surface of the arc-shaped block. It can be understood that the auxiliary rotating shaft 5503 can be provided on one of the auxiliary rotating portion 5413 and the first rotating portion 552, and the rotating hole 5410 can be provided on the other of the auxiliary rotating portion 5413 and the first rotating portion 552; in other embodiments, a rotating shaft is provided at one end of the side surface of the auxiliary rotating portion 5413 away from the arc track 5411 close to the arc track 5411, and rotating holes are respectively provided on the opposite sides of one end of the first rotating portion 552 away from the second rotating portion 553, and the rotating shaft is rotatably inserted into the rotating hole.

[0064] One end of the second rotating part 553 facing away from the first rotating part 552 is provided with a receiving opening 5530. On opposite sides of the receiving opening 5530 of the second rotating part 553, rotating cylinders 5533 are respectively provided, and the two rotating cylinders 5533 are coaxial; one end of the connecting piece 555 is provided with a receiving groove 5551, and the rotating cylinder 5533 is rotatably received in the receiving groove 5551. Specifically, two spaced lugs are provided at one end of the second rotating part 553 facing away from the first rotating part 552. One end of each lug away from the first rotating part 552 is provided with a rotating cylinder 5533. The two rotating cylinders 5533 and the two lugs enclose the receiving opening 5530. The rotating cylinder 5533 is provided with a first shaft hole 5534 along its axial direction, and the receiving opening 5530 communicates with the first shaft hole 5534. The receiving groove 5551 is located on the side away from the base 53 at one end of the front surface of the connecting piece 555. Specifically, positioning cylinders 5553 are respectively provided at opposite ends of the front surface of the connecting piece 555 with respect to the receiving groove 5551. The two positioning cylinders 5553 are coaxial. The positioning cylinder 5553 is provided with a second shaft hole 5555 along its axis, and the second shaft hole 5555 communicates with the receiving groove 5551. When the two rotating cylinders 5533 are rotatably received in the receiving groove 5551, the two rotating cylinders 5533 are located between the two positioning cylinders 5553, and the rotating shaft 551 is inserted into the second shaft holes 5555 of the two positioning cylinders 5553 and the first shaft holes 5534 of the two rotating cylinders 5533.

[0065] One end of the front surface of the connecting piece 555 away from the positioning cylinder 5553 is provided with an avoidance groove 5557. Opposite sides of the avoidance groove 5557 penetrate through opposite side surfaces of the connecting piece 555 respectively. The connecting piece 555 is respectively provided with sliding grooves 5550 on opposite side surfaces of the avoidance groove 5557. Opposite ends of each sliding groove 5550 penetrate through opposite side surfaces of the connecting piece 555 respectively. The connecting piece 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 piece 555, and the rotating rail is provided on the other of the side support member 523 and the connecting piece 555; in this embodiment, rotating rails 5556 are respectively provided at opposite ends of the connecting piece 555. The axes of the two rotating rails 5556 are collinear. The two rotating rails 5556 of the connecting piece 555 are respectively rotatably received in the two rotating grooves 5234 of the corresponding side support member 523, so that the side support member 523 is rotatably connected to the connecting piece 555.

[0066] In some embodiments, rotating grooves are respectively provided at opposite ends of the connecting piece 555, and the side support member 523 is provided with rotating rails. The rotating rails are rotatably received in the corresponding rotating grooves, so that the side support member 523 is rotatably connected to the connecting piece 555.

[0067] Such as Figures 9 - 12 and Figures 17 - 18As shown, the linkage mechanism 56 includes a connecting shaft 561, a connecting rod member 562, a gear combination 564, and a fixing member 565 sleeved on the connecting shaft 561. One end of the connecting shaft 561 is connected to the base 53, and the axis of the connecting shaft 561 is parallel to the axis of the arc track 5411. The connecting rod member 562 is rotatably connected to the connecting shaft 561, and the connecting rod member 562 can rotate around the axis of the connecting shaft 561. In this embodiment, each folding assistance assembly 51 includes two connecting shafts 561 arranged in parallel at intervals and two connecting rod members 562. One connecting shaft 561 is connected to one side of the base 53, and the other connecting shaft 561 is connected to the opposite side of the base 53. One connecting rod member 562 is rotatably sleeved on one connecting shaft 561 relative to the base 53, and the other connecting rod member 562 is rotatably sleeved on the other connecting shaft 561 relative to the base 53. The gear combination 564 is arranged between the two connecting rod members 562, and the two connecting rod members 562 can rotate synchronously through the gear combination 564. One end of one connecting rod member 562 away from the base 53 is slidably connected to one end of one connecting member 555 away from the rotating member 550, and one end of the other connecting rod member 562 away from the base 53 is slidably connected to one end of the other connecting member 555 away from the rotating member 550.

[0068] As Figures 9 - 12 and Figure 19 and Figure 20 As shown, the connecting shaft 561 includes a shaft body 5610 and a connecting cap 5612 located at one end of the shaft body 5610. A clamping portion 5613 is provided at the shaft body 5610 near the connecting cap 5612, and the connecting rod member 562 is fixedly connected to the connecting shaft 561 through the clamping portion 5613. In this embodiment, the clamping portion 5613 is a clamping surface provided on the outer wall of the shaft body 5610 and extending along the axial direction of the shaft body 5610. The connecting cap 5612 is used for rotatably connecting to the base 53; a clamping groove 5616 is provided at the end of the shaft body 5610 away from the connecting cap 5612, and the clamping groove 5616 is located on the outer peripheral wall of the shaft body 5610 and surrounds the shaft body 5610 in a circumferential direction.

[0069] The connecting rod 562 includes a sliding portion 5623 that can be slidably inserted into the avoidance groove 5557, and guide rails 5620 are respectively provided on opposite sides of the sliding portion 5623, and the length directions of the two guide rails 5620 are consistent; when the sliding portion 5623 is inserted into the avoidance groove 5557, the two guide rails 5620 are respectively slidably accommodated in the two slide grooves 5550. In other embodiments, the connecting member 555 is respectively provided with guide rails on opposite sides of the avoidance groove 5557, and slide grooves are respectively provided on opposite sides of the sliding portion 5623, and when the sliding portion 5623 is inserted into the avoidance groove 5557, the two guide rails are respectively slidably accommodated in the two slide grooves. The connecting rod 562 also includes a sleeve 5622, and the sliding portion 5623 is connected to the outer peripheral wall of the sleeve 5622, and the sleeve 5622 is used to be sleeved on the shaft body 5610, and the outer peripheral wall of the sleeve 5622 is provided with a driving gear 5621. The driving gear 5621 is located on the side of the sleeve 5622 away from the sliding portion 5623, and the axis of the driving gear 5621 is colinear with the axis of the sleeve 5622. In this embodiment, the rotation angle of the teeth of the driving gear 5621 along the circumferential direction of the sleeve 5622 is 90 degrees, and the diameter of the pitch circle of the driving gear 5621 is greater than the outer diameter of the first cam 5720. The sleeve 5622 has a waist-shaped shaft hole 5624, and the sleeve 5622 can be positioned on the clamping portion 5613 after the connecting shaft 561 is inserted into the shaft hole 5624 of the sleeve 5622. The length direction of the guide rail 5620 is perpendicular to the axial direction of the sleeve 5622. The connecting rod 562 is movably connected to the corresponding side support 523 through the cooperation of the adjustment groove and the adjustment shaft, and the axis of the adjustment shaft is parallel to the axis direction of the connecting shaft 561; the adjustment groove 5237 is provided in one of the side support 523 and the connecting rod 562, and the adjustment shaft is provided in the other of the side support 523 and the connecting rod 562. In this embodiment, the side support 523 is provided with an adjustment groove, and the end of the sliding part 5623 away from the connecting shaft 561 is provided with an adjustment shaft 5628, and the adjustment shaft 5628 is rotatably and slidably penetrated in the adjustment groove.

[0070] The gear assembly 564 includes two intermeshing linkage gears 5642, the driving gears 5621 of the two connecting rods 562 are respectively meshed with the two linkage gears 5642, the pitch circle diameter of the linkage gear 5642 is smaller than the pitch circle diameter of the driving gear 5621, and the number of teeth arranged in one circle of the linkage gear 5642 is less than the number of teeth arranged in one circle of the driving gear 5621. The gear assembly 564 also includes two rotating shafts 5644, the two linkage gears 5642 are respectively fixedly sleeved on the middle parts of the two rotating shafts 5644, and the two linkage gears 5642 are used to mesh with the two driving gears 5621 respectively.

[0071] The fixing member 565 is connected to one end of the two connecting shafts 561. The fixing member 565 is a rectangular positioning piece. The two opposite ends of the fixing member 565 are respectively provided with first guide sliding holes 5652. The shaft bodies 5610 of the two connecting shafts 561 are respectively penetrated through the two first guide sliding holes 5652. The connecting shafts 561 can rotate in the first guide sliding holes 5652, and the fixing member 565 can only slide along the axial direction of the two connecting shafts 561. Two first support holes 5654 are provided in the middle of the fixing member 565 between the two first guide sliding holes 5652. The axis of the first guide sliding hole 5652 is parallel to the axis of the first support hole 5654. The two rotating shafts 5644 are respectively rotatably inserted into the first support holes 5654. A positioning block 5656 is provided on the side of the fixing member 565 facing the connecting rod 562. The connecting rod 562 includes a first limiting surface 5626 and a second limiting surface 5627. When the two connecting rods 562 are folded relative to the base 53, the positioning block 5656 abuts against the first limiting surface 5626; when the two connecting rods 562 are flattened relative to the base 53, the positioning block 5656 abuts against the second limiting surface 5627. Specifically, a notch is provided around the shaft hole 5624 at one end of the sleeve 5622 facing the fixing member 565. The first limiting surface 5626 and the second limiting surface 5627 are two opposite end surfaces of the notch. The first limiting surface 5626 is further away from the sliding portion 5623 than the second limiting surface 5627. A positioning rod 5657 is provided on the side of the fixing member 565 away from the positioning block 5656. The positioning rod 5657 is used to be positioned on the base 53. The limiting mechanism 57 includes a push member 572, a holding member 573, an elastic member 575, a positioning member 576 and a friction assembly 577 arranged at one end of the sleeve 5622. The push member 572, the holding member 573, the positioning member 576 and the friction assembly 577 are sleeved on the connecting shaft 561. The elastic member 575 is located between the holding member 573 and the positioning member 576. The elastic member 575 provides an elastic force for the holding member 573 and the push member 572 to abut against each other. When the rotating mechanism 55 rotates relative to the base 53, the connecting rod 562 and the corresponding connecting shaft 561 rotate together around the axis of the connecting shaft 561, so that the push member 572 rotates relative to the holding member 573. The friction torque between the push member 572 and the holding member 573 and the friction resistance of the friction assembly 577 position the connecting rod 562 and the rotating mechanism 55 relative to the base 53. The support mechanism 52 is folded or unfolded along with the folding assisting assembly 51. The friction torque between the push member 572 and the holding member 573 and the friction resistance of the friction assembly 577 can position the support mechanism 52 during the folding or unfolding process, so that the two frames 21 are positioned at a specific angle relative to the base 53, thereby making the electronic device 100 have a hovering effect. The elastic member 575 includes a spring sleeved on each connecting shaft 561.

[0072] Specifically, the pushing member 572 includes a first cam 5720 provided at one end of the sleeve 5622. The sleeve 5622 and the first cam 5720 are coaxial, and the first cam 5720 can rotate around the axis of the sleeve 5622 with the sleeve 5622; the holding member 573 includes a second cam 5730, and the first cam 5720 and the second cam 5730 are rotatably engaged with each other. When the first cam 5720 rotates relative to the second cam 5730, the first cam 5720 rotationally pushes the second cam 5730 to slide away from or close to the first cam 5720, and the elastic member 575 is compressed. The frictional torque between the pushing member 572 and the holding member 573 can position the link member 562 relative to the base 53 and the rotating mechanism 55. Under a certain width and height space of the connecting shaft 561, by providing two linkage gears 5642 between the two connecting shafts 561, the pitch diameter of the driving gear 5621 can be increased, so that the outer diameter of the first cam 5720 can be increased, enabling a larger frictional torque to be provided between the first cam 5720 and the second cam 5730, and reducing the fatigue wear of the first cam 5720, thereby prolonging the service life of the first cam 5720.

[0073] In this embodiment, each link member 562 is connected with a pushing member 572, and two first cams 5720 are respectively sleeved on the two connecting shafts 561; the holding member 573 includes two second cams 5730, and the two second cams 5730 are respectively slidably sleeved on the two connecting shafts 561. One ends of the two link members 562 away from the first cams 5720 are respectively connected to the two connecting members 555. The link member 562 rotates relative to the base 53 with the rotating mechanism 55 to drive the connecting shaft 561 and the first cam 5720 to rotate relative to the second cam 5730. Specifically, the first cam 5720 includes a concave-convex surface provided at one end of the sleeve 5622. The concave-convex surface includes a first protrusion 5724 and a first recess 5725, and the first protrusion 5724 and the first recess 5725 are arranged at intervals in sequence along the circumferential direction of the sleeve 5622. The number of the first protrusions 5724 and the number of the first recesses 5725 can be set as required. For example, the first cam 5720 can include one first protrusion 5724 and one first recess 5725, two first protrusions 5724 and two first recesses 5725, three first protrusions 5724 and three first recesses 5725, or four first protrusions 5724 and four first recesses 5725, etc. In this embodiment, the first cam 5720 includes three first protrusions 5724 and three first recesses 5725.

[0074] The abutting member 573 further includes a connecting portion 5732, two second cams 5730 are provided at opposite ends of the connecting portion 5732, an elastic member 575 is located between the positioning member 576 and the abutting member 573, the connecting shaft 561 is rotatable relative to the abutting member 573, and the abutting member 573 can only slide axially along the connecting shaft 561. Specifically, the second cam 5730 includes a circular sleeve and a concave-convex surface provided at one end of the sleeve, the concave-convex surface includes a second protruding portion 5734 and a second recessed portion 5735, and the second protruding portion 5734 and the second recessed portion 5735 are arranged at intervals in sequence along the circumferential direction of the sleeve; the number of the second protruding portions 5734 and the number of the second recessed portions 5735 on the second cam 5730 are the same as the number of the first recessed portions 5725 and the number of the first protruding portions 5724 on the first cam 5720, so that the first protruding portion 5724 cooperates with the second recessed portion 5735, and the second protruding portion 5734 cooperates with the first recessed portion 5725. The abutting member 573 is provided with a second support hole 5736. Specifically, the connecting portion 5732 is provided with two second support holes 5736, and the axis of the second support hole 5736 is parallel to the axis of the second cam 5730; opposite ends of the rotating shaft 5644 of the linkage gear 5642 are respectively inserted into the first support hole 5654 and the second support hole 5736.

[0075] The positioning member 576 includes a rectangular guide sliding piece 5761 and an extension portion 5763 provided in the middle of one side surface of the guide sliding piece 5761; second guide sliding holes 5765 are respectively provided at opposite ends of the guide sliding piece 5761, and opposite end surfaces of the guide sliding piece 5761 are set as arc surfaces. The extending direction of the extension portion 5763 is parallel to the axis of the second guide sliding hole 5765, and two avoidance holes 5767 are provided on the end surface of the extension portion 5763 departing from the guide sliding piece 5761. Preferably, a first anti-sliding portion 5768 is provided around the second guide sliding hole 5765 on the side surface of the guide sliding piece 5761 departing from the extension portion 5763. Specifically, the first anti-sliding portion 5768 can be but is not limited to a convex portion, a hole or a rough surface provided on the guide sliding piece 5761, etc.

[0076] The friction assembly 577 includes a first friction member 5770, a gasket 578, a second friction member 5775, and two fasteners 579. The gasket 578 is sleeved on the connecting shaft 561. Both the first friction member 5770 and the second friction member 5775 are connected to the connecting shaft 561, and the first friction member 5770 and the second friction member 5775 are respectively located on opposite sides of the gasket 578. The fastener 579 is used to be clamped in the slot 5616 of the connecting shaft 561. The first friction member 5770 abuts against the positioning member 576. When the connecting shaft 561 rotates relative to the base 53, the first friction member 5770 and the second friction member 5775 rotate together with the connecting shaft 561. There is 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. Specifically, the first friction member 5770 is a circular friction plate, and a first positioning hole 5772 is formed in the middle of the friction plate. The first friction member 5770 is fixedly connected to the connecting shaft 561 through the first positioning hole 5772. A first anti-slip portion 5768 is provided on the side of the positioning member 576 facing the first friction member 5770, and / or a second anti-slip portion 5774 is provided on the side of the first friction member 5770 facing the positioning member 567. In this embodiment, second anti-slip portions 5774 are respectively provided on opposite sides of the first friction member 5770. The second anti-slip portion 5774 can be, but is not limited to, a convex portion, a hole, or a rough surface provided on the first friction member 5770, etc. In this embodiment, a plurality of holes are respectively provided on opposite sides of the first friction member 5770, and these holes can increase the frictional resistance of the first friction member 5770. In this embodiment, a first anti-slip portion 5768 is provided on the side of the positioning member 576 facing the first friction member 5770, and a second anti-slip portion 5774 is provided on the side of the first friction member 5770 facing the positioning member 576. In some embodiments, the first anti-slip portion 5768 on the positioning member 576 can be omitted, and only the second anti-slip portion 5774 on the side of the first friction member 5770 facing the positioning member 576 is retained; or the second anti-slip portion 5774 on the side of the first friction member 5770 facing the positioning member 576 can be omitted, and only the first anti-slip portion 5768 on the positioning member 576 is retained.

[0077] The spacer 578 is slidably sleeved on two connecting shafts 561, and the first friction member 5770 is between the spacer 578 and the positioning member 576; when the first friction member 5770 rotates with the connecting shaft 561, there is frictional resistance between the first friction member 5770 and the positioning member 576 and between the first friction member 5770 and the spacer 578, and there is frictional resistance between the second friction member 5775 and the spacer 578. Specifically, the spacer 578 is rectangular, and the opposite ends of the spacer 578 are respectively provided with arc surfaces. The side surface of the spacer 578 facing the first friction member 5770 is provided with a third anti-slip portion 5784. In this embodiment, through holes 5782 are respectively provided at the opposite ends of the spacer 578, and third anti-slip portions 5784 are provided around each through hole 5782 on the opposite side surfaces of the spacer 578. The third anti-slip portion 5784 can be, but is not limited to, a convex portion, a hole, a rough surface, etc. provided on the first friction member 5770. In this embodiment, the third anti-slip portion 5784 is a number of holes provided around each through hole 5782 on the opposite side surfaces of the spacer 578. The side surface of the spacer 578 facing the first friction member 5770 is provided with a third anti-slip portion 5784, and the side surface of the first friction member 5770 facing the spacer 578 is provided with a second anti-slip portion 5774.

[0078] The spacer 578 and the second friction member 5775 abut against each other. When the second friction member 5775 rotates with the connecting shaft 561, there is frictional resistance between the second friction member 5775 and the spacer 578. Specifically, the second friction member 5775 is a circular friction plate, and a second positioning hole 5776 is opened in the middle of the second friction member 5775. The second friction member 5775 is fixedly connected to the connecting shaft 561 through the second positioning hole 5776. The side surface of the spacer 578 facing the second friction member 5775 is provided with a third anti-slip portion 5784, and / or the side surface of the second friction member 5775 facing the spacer 578 is provided with a fourth anti-slip portion 5778. In this embodiment, fourth anti-slip portions 5778 are respectively provided on the opposite side surfaces of the second friction member 5775. 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 number 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. The side surface of the spacer 578 facing the second friction member 5775 is provided with a third anti-slip portion 5784, and the side surface of the second friction member 5775 facing the spacer 578 is provided with a fourth anti-slip portion 5778.

[0079] Please refer to Figures 9 - 25, when assembling the folding-assisting component 51, place the two connecting parts 5405 into the receiving grooves 5521 of the two rotating parts respectively, so that the two folding-assisting rotating shafts 5503 pass through the two folding-assisting rotating grooves 5401 respectively, and the opposite sides of each first rotating part 552 are placed into the corresponding guiding rotating grooves 5406 respectively; place two of the folding-assisting rotating parts 541 into the two first avoiding grooves 5302 of the first seat body 530 respectively, so that the two arc tracks 5411 are inserted into the two arc grooves 532 respectively, and the two rotating holes 5410 approach each other; place the other two folding-assisting rotating parts 541 into the two second avoiding grooves 5312 of the second seat body 531 respectively, so that the two arc tracks 5411 are inserted into the two arc grooves 532 respectively, and the two rotating holes 5410 approach each other; connect one end of the first seat body 530 provided with the first avoiding groove 5302 to one side of the folding-assisting base 540, so that the two rotating shafts 5501 on one side of the folding-assisting base 540 are rotatably inserted into the rotating holes 5410 of the corresponding two folding-assisting rotating parts 541 respectively; connect one end of the second seat body 531 provided with the second avoiding groove 5312 to the opposite side of the folding-assisting base 540, so that the two rotating shafts 5501 on the opposite side of the folding-assisting base 540 are rotatably inserted into the rotating holes 5410 of the corresponding two folding-assisting rotating parts 541 respectively; at this time, the folding-assisting rotating parts 541 are respectively arranged on the opposite sides of the first rotating part 552, and the first seat body 530 and the second seat body 531 can be fixed to the folding-assisting base 540 respectively through, but not limited to, clamping, gluing, etc., and the fixing part 5402 is clamped between the first seat body 530 and the second seat body 531. Rotatably place the rotating cylinder 5533 of one of the rotating parts 550 into the receiving groove 5551 of one of the connecting parts 555, insert one of the rotating shafts 551 into the second shaft hole 5555 and the first shaft hole 5534, so that one of the rotating parts 550 is rotatably connected to one of the connecting parts 555; rotatably place the rotating cylinder 5533 of the other rotating part 550 into the receiving groove 5551 of the other connecting part 555, insert the other rotating shaft 551 into the second shaft hole 5555 and the first shaft hole 5534, so that the other rotating part 550 is rotatably connected to the other connecting part 555.

[0080] Insert the end portions of the two connecting shafts 561 away from the connecting cap 5612 into the two first guiding sliding holes 5652 of the fixing member 565 respectively until the fixing member 565 abuts against the connecting cap 5612; position the gear assembly 564 between the two link members 562, and engage the two linkage gears 5642 with the two driving gears 5621 respectively; insert the end portions of the two connecting shafts 561 away from the connecting cap 5612 into the sleeves 5622 of the two link members 562 respectively, and insert the two rotating shafts 5644 of the gear assembly 564 into the two first supporting holes 5654 of the fixing member 565 respectively, and the positioning blocks 5656 of the fixing member 565 are received in the notches of the corresponding sleeves 5622; at this time, each first cam 5720 and the corresponding driving gear 5621 share the connecting shaft 561, and each positioning block 5656 is located between the corresponding first limiting surface 5626 and the second limiting surface 5627. Sleeve the abutting member 573 on the two connecting shafts 561 so that the two second cams 5730 of the abutting member 573 can be rotatably engaged with the two first cams 5720 respectively, and insert the two rotating shafts 5644 into the two second supporting holes 5736 of the abutting member 573 respectively; sleeve the two elastic members 575 on the two connecting shafts 561 respectively; insert the end portions of the two connecting shafts 561 provided with the clamping grooves 5616 into the two second guiding sliding holes 5765 of the positioning member 576 respectively until the two rotating shafts 5644 are inserted into the two avoiding holes 5767 of the positioning member 576 respectively, so that the elastic members 575 are clamped between the abutting member 573 and the positioning member 576; sleeve the two first friction members 5770 on the two connecting shafts 561 respectively, sleeve the spacer 578 on the two connecting shafts 561, and then sleeve the two second friction members 5775 on the two connecting 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 clamping groove 5616 of each connecting shaft 561 exposes the side surface of the corresponding second friction member 5775 away from the positioning member 576; then snap the two fasteners 579 onto the clamping grooves 5616 of the two connecting shafts 561 respectively. At this time, the two fasteners 579 respectively abut against the side surfaces of the two second friction members 5775 away from the positioning member 576, the elastic members 575 are in a compressed state, each first cam 5720 rotatably abuts against the corresponding second cam 5730, and the axial forces on the first cam 5720, the second cam 5730 and the friction assembly 577 on each connecting shaft 561 are equal to the pre-tension force of the elastic member 575. Place the combination of the two linkage mechanisms 56 and the limiting mechanism 57 between the two connecting members 555, insert the guide rails 5620 of the two link members 562 into the sliding grooves 5550 of the two connecting members 555 respectively in a sliding manner, and insert the two connecting caps 5612, the two rotating shafts 5644 and the positioning rod 5657 into the two rotating holes 5305, the two connecting holes 5306 and the fixing holes 5307 respectively.

[0081] Please also refer to Figures 5 - 8, when assembling the support mechanism 52 to the folding assistance component 51, place the two folding assistance components 51 at opposite ends on the back of the middle support member 521. A plurality of locking members respectively pass through a plurality of connection holes 5212 of the middle support member 521 and are locked in corresponding positioning holes 5304 on the base 53. Place the two side support members 523 on opposite sides of the base 53 respectively. Rotatably accommodate the two rotating rails 5556 of each connecting member 555 in a corresponding pair of rotating slots 5234 respectively, and insert the adjusting shaft 5628 of the link member 562 into the corresponding adjusting slot 5237. Then connect opposite ends of the front surface of the back shell 59 to the two bases 53 respectively. When the two side support members 523 are in a flattened state, the adjusting shaft 5628 is positioned at the second positioning section 5237b of the corresponding adjusting slot 5237, the positioning block 5656 abuts against the second limiting surface 5627, and the assisting rotating shaft 5503 is positioned at the first positioning end 5403, so that the folding device 50 maintains a flattened state, the rotating shafts 5501 of the two rotating members 550 approach each other, 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 bending reversely relative to the middle support member 521. When the two side support members 523 are in a folded state, the adjusting shaft 5628 is positioned at the first positioning section 5237a of the corresponding adjusting slot 5237, the positioning block 5656 abuts against the first limiting surface 5626, and the assisting rotating shaft 5503 is positioned at the second positioning end 5404, so that the folding device 50 maintains a folded state, the rotating shafts 5501 of the two rotating members 550 move away from each other, and the front surfaces of the two side support members 523 and the middle support member 521 enclose a water droplet shape, preventing the side support members 523 from further bending relative to the middle support member 521. When the assisting rotating shaft 5503 slides and rotates in the corresponding assisting rotating slot 5401, the rotating member 550 rotates relative to the assisting rotating base 540 and the assisting rotating member 541 at the same time, and the assisting rotating member 541 rotates relative to the base 540, and the angle of rotation of the assisting rotating member 541 relative to the base 53 is smaller than the angle of rotation of the rotating member 550 relative to the base 53.

[0082] Specifically, when folding the folding assist assembly 51, the assist rotation shaft 5503 slides and rotates to the second positioning end 5404 in the first positioning end 5403 of the assist rotation groove 5401. The rotation shaft 5501 of the rotating member 550 rotates in the corresponding rotation hole 5410. The rotation shafts 5501 of the two rotating members 550 move away from each other, so that the assist rotation member 541 rotates relative to the base 53 along the first rotation direction. The rotation angle of the rotating member 550 relative to the base 53 along the first rotation direction is greater than the rotation angle of the assist rotation member 541 relative to the base 53 along the first rotation direction. When flattening the folding assist assembly 51, the assist rotation shaft 5503 slides and rotates to the first positioning end 5403 in the second positioning end 5404 of the assist rotation groove 5401. The rotation shaft 5501 of the rotating member 550 rotates in the corresponding rotation hole 5410. The rotation shafts 5501 of the two rotating members 550 approach each other, so that the assist rotation member 541 rotates relative to the base 53 along the second rotation direction. The rotation angle of the rotating member 550 relative to the base 53 along the second rotation direction is greater than the rotation angle of the assist rotation member 541 relative to the base 53 along the second rotation direction.

[0083] Please refer to Figures 1 - 4 as well. Place the installed folding device 50 between the two frames 21. Place the side support members 523 on the opposite sides of the folding device 50 into the positioning grooves 216 of the two frames 21 respectively, and fix the connecting member 555 to the corresponding installation part 217. Specifically, a plurality of locking members pass through the fixing holes 218 from the back surface 212 of the frame 21 and are connected to the connecting member 555. At this time, the front surfaces of the two frames 21, the front surface of the middle support member 521, and the front surfaces of the two side support members 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 face the front surfaces of the two frames 21 respectively.

[0084] Please refer to Figures 1 - 4 and Figures 26 to 34, when bending the electronic device 100, a bending force is applied to at least one of the two frames 21 of the electronic device 100, so that the rotating mechanism 55 connected to the two frames 21 rotates in a direction approaching each other, and the folding device 50 is bent by the two folding assisting components 51, and the bendable area 31 of the flexible screen 30 is bent along with the supporting mechanism 52. Specifically, for example, when a bending force is applied to one of the frames 21, the one frame 21 drives the corresponding rotating mechanism 55 to rotate relative to the base 53 towards the side close to the flexible screen 30, and the assisting rotating shaft 5503 of the rotating member 550 slides and rotates from the first positioning end 5403 of the corresponding assisting rotating groove 5401 to the second positioning end 5404, and the rotating shaft 5501 rotates in the corresponding rotating hole 5410 along the first rotation direction, so that the assisting rotating member 541 rotates relative to the base 53 along the first rotation direction; at the same time, the two guide rails 5620 of the connecting rod member 562 slide in the two sliding grooves 5550 of the corresponding connecting member 555 in the first direction respectively, and the sleeve 5622, the connecting shaft 561, the driving gear 5621 and the pushing member 572 of the connecting rod member 562 rotate along the axis of the corresponding connecting shaft 561 in the first rotation direction, and the rotating driving gear 5621 drives another driving gear 5621 to rotate in the second rotation direction through the gear combination 564, and the rotation of the another driving gear 5621 drives the corresponding connecting shaft 561, sleeve 5622, pushing member 572 and sliding portion 5623 to rotate in the second rotation direction, so that the two connecting rod members 562 of the linkage mechanism 56 approach each other synchronously, and the first rotation direction is opposite to the second rotation direction; at the same time, the pushing member 572 on each connecting rod member 562 rotates relative to the holding member 573, so that the first cam 5720 of the pushing member 572 rotates and pushes the second cam 5730, and the holding member 573 slides along the axial direction of the connecting shaft 561 to squeeze the elastic member 575, and 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 579, 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 connecting shaft 561.During the bending process of the linkage mechanism 56, the rotating member 550 rotates relative to the base 53 through the cooperation of the rotation assisting member 541 and the rotation assisting base 540. 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 adjusting shaft 5628 rotates and slides from the second positioning section 5237b to the first positioning section 5237a in the corresponding adjusting groove 5237. The two link members 562 rotate along the axes of the corresponding connecting shafts 561 and approach each other, so as to realize the mutual approach of the two side support members 523, making the folding device 50 in a bent state. The bendable area 31 of the flexible screen 30 bends along with the folding device 50 until the fronts of the two non-bendable areas 33 of the flexible screen 30 are mutually attached. The bendable area 31 is bent into a water droplet shape, thereby realizing the seamless folding of the electronic device 100.

[0085] During the bending process of the electronic device 100, the frictional torque between the first cam 5720 and the second cam 5730, the frictional resistance of the first friction member 5770, and the frictional resistance of the second friction member 5775 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-bendable areas 33 of the flexible screen 30 are parallel to each other; the bendable area 31 of the flexible screen 30 is bent into a water droplet shape, reducing the duty ratio of the bendable area 31 after bending, thereby reducing the overall thickness of the electronic device 100. As Figure 27As shown, the rotating member 550 rotates about the second axis O2, that is, the rotating shaft 5501 of the rotating member 550 rotates in the corresponding rotating hole 5410. At the same time, the second axis O2 rotates about the first axis O1, that is, the first rotating shaft 5501 rotates about the first axis O1 relative to the base 53 with the corresponding assisting rotating member 541. Coupled together, it can make the rotating member 550 rotate about the variable axis, so as to realize that the center of the rotation axis of the rotating member 550 changes. However, the rotation axis (i.e., the first axis O1) of the rotating member 550a of the folding device in the prior art relative to the base is generally fixed. If the angle of rotation of the rotating member 550a about the rotation axis relative to the base is set as a, and the angle of rotation of the second axis O2 about the first axis O1 when the rotating member 550 of the folding device 50 of the present application rotates relative to the base 53 is set as c, then the angle of rotation of the rotating member 550 about the second axis O2 is a'. Then a = a' + c. Therefore, a' is less than a, that is, the rotation amount of the rotating member 550 relative to the base 53 by rotating about the second axis O2 and the first axis O1 is less than the rotation amount of the rotating member 550a in the prior art rotating only about the rotation axis relative to the base 53. Thus, the rotation amount of the rotating member 550 relative to the base 53 is reduced, and the overlapping length of the arc track 5411 and the arc groove 532 is increased. This not only makes the connection between the rotating member 550 and the base 53 more stable, but also is beneficial to reducing the volume of the folding device 50.

[0086] 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 folding device 50 is used to realize the bending of the electronic device 100.

[0087] When it is necessary to flatten the electronic device 100, one of the frames 21 is pulled outwards, so that the two rotating mechanisms 55 connected to the two frames 21 rotate in a direction away from each other. Specifically, an outward pulling force is applied to one of the frames 21 of the electronic device 100, and the one frame 21 drives the corresponding rotating mechanism 55 to rotate relative to the base 53 to the side away from the flexible screen 30. The auxiliary rotating shaft 5503 of the rotating member 550 slides and rotates from the second positioning end 5404 of the corresponding auxiliary rotating groove 5401 to the first positioning end 5403, and the rotating shaft 5501 rotates in the corresponding rotating hole 5410 along the third rotation direction, so that the auxiliary rotating member 541 rotates relative to the base 53 along the second rotation direction; at the same time, the two guide rails 5620 of the link member 562 slide in the two sliding grooves 5550 of the corresponding connecting member 555 in the first direction respectively, and the sleeve 5622, the connecting shaft 561, the driving gear 5621 and the pushing member 572 of the link member 562 rotate along the axis of the corresponding connecting shaft 561 in the third rotation direction. The rotating driving gear 5621 drives another driving gear 5621 to rotate in the fourth rotation direction through the gear combination 564. The rotation of the other driving gear 5621 drives the corresponding connecting shaft 561, sleeve 5622, pushing member 572 and sliding portion 5623 to rotate in the fourth rotation direction along the axis of the corresponding connecting shaft 561, so that the two link members 562 of the linkage mechanism 56 move away from each other synchronously. The third rotation direction is opposite to the fourth rotation direction; at the same time, the pushing member 572 on each link member 562 rotates relative to the abutting member 573, so that the first cam 5720 of the pushing member 572 rotationally abuts against the second cam 5730. 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 connecting 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 579. 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 connecting shaft 561; during the bending process of the linkage mechanism 56, the rotating member 550 rotates relative to the base 53 through the cooperation of the auxiliary rotating member 541 and the auxiliary rotating base 540. The second rotating portion 553 of the rotating member 550 is rotatably connected to the corresponding connecting member 555. The adjusting shaft 5628 rotates and slides in the corresponding adjusting groove 5237. The two link members 562 rotate along the axis of the corresponding connecting shaft 561 and move away from each other respectively, so as 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 is unfolded along with the folding device 50 until the flexible screen 30 is flattened.

[0088] During the flattening process of the electronic device 100, the frictional torque between the first cam 5720 and the second cam 5730, and the frictional torques of the first friction member 5770 and the second friction member 5775 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 0 degrees and 180 degrees.

[0089] In other bending methods of the electronic device 100, a force that pulls the two frames 21 apart can also be applied simultaneously. The two frames 21 drive the base 53 to rotate away from each other relative to the rotating mechanisms 55 on both sides respectively, so as to drive the link members 562 on both sides of the base 53 to rotate away from each other, causing the two side support members 523 to rotate towards the side away from the flexible screen 30, and the electronic device 100 can be unfolded through the folding device 50.

[0090] The folding device 50 of the electronic device 100 of the present invention realizes synchronous bending or unfolding through the folding assistance assembly 51. The rotating member 550 rotates relative to the rotation assistance member 541, and at the same time, the rotating member 550 and the rotation assistance member 541 rotate relative to the base 53 together. Since the rotating member 550 and the rotation assistance member 541 rotate multiple times relative to the base 53, when the folding device 50 is in the fully folded state, the amount of rotation of the rotation assistance member 541 relative to the base 53 becomes smaller, so that the overlapping amount of the arc track 5411 of the rotation assistance member 541 and the arc groove 532 is larger, so as to avoid problems such as jamming or seizure failure during the unfolding process of the folding device 50, making the folding or unfolding of the electronic device 100 smoother and improving the user experience; secondly, since the elastic member 575 can provide a large axial force, there is a large frictional torque between the first cam 5720 and the second cam 5730, and at the same time, the first friction member 5770 and the second friction member 5775 also have a large frictional resistance; 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.

[0091] 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 principles of the embodiments of the present invention, several improvements and refinements can be made, and these improvements and refinements 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; an assisting rotation mechanism including an assisting rotation base and an assisting rotation member, where the assisting rotation base is fixed to the base and the assisting rotation member is rotatably connected to the base; and a rotating mechanism including a rotating member and a connecting member rotatably connected to the rotating member, one end of the rotating member away from the connecting member is rotatably connected to the assisting rotation member, and the rotating member is also slidably and rotatably connected to the assisting rotation base; wherein, during the rotation of the rotating member relative to the base, the assisting rotation member rotates relative to the base about a first axis, the rotating member rotates relative to the assisting rotation member about a second axis, and the rotating member slides and rotates relative to the assisting rotation base about a third axis; the first axis, the second axis, and the third axis are parallel to each other at intervals.

2. The folding device according to claim 1, characterized in that, The assisting rotation member and the base are rotatably connected through the cooperation of an arc track and an arc groove, one end of the rotating member away from the connecting member and the assisting rotation member are rotatably connected through the cooperation of a rotating shaft and a rotating hole, and the rotating member and the assisting rotation base are slidably and rotatably connected through the cooperation of an assisting rotation shaft and an assisting rotation groove; during the rotation of the rotating member relative to the base, the assisting rotation shaft slides and rotates along the assisting rotation groove, the rotating shaft rotates in the rotating hole, and the rotating shaft and the assisting rotation member rotate together about the first axis relative to the base.

3. The folding device according to claim 1, wherein, The second axis is farther from the connecting member than the first axis, and the second axis is farther from the connecting member than the third axis.

4. The folding device according to claim 2, characterized in that, The assisting rotation groove includes a first positioning end and a second positioning end at its opposite ends. When the assisting rotation shaft is positioned at the first positioning end, the rotating member is in a flattened state relative to the base; when the assisting rotation shaft is positioned at the second positioning end, the rotating member is in a folded state relative to the base.

5. The folding device according to claim 2, wherein, When the assisting rotation shaft slides and rotates in the assisting rotation groove, the rotating member rotates relative to both the assisting rotation base and the assisting rotation member at the same time, and the assisting rotation member rotates relative to the base, and the angle of rotation of the assisting rotation member relative to the base is less than the angle of rotation of the rotating member relative to the base.

6. The folding device according to claim 4, characterized in that, The assisting rotation member includes an assisting rotation portion and the arc track provided on the assisting rotation portion, the base is provided with the arc groove, the rotating member includes a first rotating portion and a second rotating portion at its opposite ends, the second rotating portion is rotatably connected to the connecting member, the rotating shaft is provided on one of the assisting rotation portion and the first rotating portion, and the rotating hole is provided on the other of the assisting rotation portion and the first rotating portion.

7. The folding device according to claim 6, wherein, The assisting rotation base includes a fixing portion fixed to the base and a connecting portion provided on the fixing portion, the assisting rotation groove is provided on the connecting portion, and the assisting rotation shaft is provided on the first rotating portion; the rotating hole is provided on the side of the assisting rotation portion facing away from the arc track, the rotating hole is close to one end of the arc track away from the connecting member, the rotating shaft is provided on the first rotating portion, and the rotating shaft is farther from the second rotating portion than the assisting rotation shaft.

8. The folding device according to claim 7, wherein, One end of the first rotating part facing away from the second rotating part is provided with a receiving groove, the connecting part is received in the receiving groove, the assisting rotating shaft is located in the receiving groove, and at least one end of the assisting rotating shaft is connected to one of the opposite side surfaces of the receiving groove.

9. The folding device according to claim 7, wherein, The middle part of the assisting rotating groove bends towards one side of the fixing part, the first positioning end is farther from the front surface of the base than the second positioning end, and the first positioning end is closer to the middle part of the fixing part than the second positioning end.

10. The folding device according to claim 6, characterized in that, The assisting rotating parts are respectively arranged on the opposite sides of the first rotating part, the rotating shafts are respectively arranged on the opposite sides of the end of the first rotating part away from the second rotating part, the two rotating shafts are coaxial, the rotating holes are arranged at the ends of the assisting rotating parts close to the corresponding arc tracks away from the connecting parts, and the two rotating shafts are respectively rotatably inserted into the two rotating holes.

11. The folding device according to claim 7, characterized in that, A avoiding groove is arranged on the front surface of the base, the ends of the assisting rotating part and the rotating part away from the connecting part are received in the avoiding groove, and the arc groove communicates with the avoiding groove; a guiding rotating groove communicating with the avoiding groove is arranged on the fixing part, and the first rotating part is rotatably received in the guiding rotating groove.

12. The folding device according to claim 2, characterized in that, The base includes a first base body and a second base body, and the assisting rotating base is located between the first base body and the second base body; Wherein, the assisting rotating part is arranged between the first base body and the assisting rotating base, and the first base body and the assisting rotating part are rotatably connected through the cooperation of the arc track and the arc groove; and / or, the assisting rotating part is arranged between the second base body and the assisting rotating base, and the second base body and the assisting rotating part are rotatably connected through the cooperation of the arc track and the arc groove.

13. The folding device according to claim 2, wherein The rotating mechanisms are respectively arranged on the opposite sides of the base, the rotating part of one of the rotating mechanisms is slidably and rotatably connected with one end of the assisting rotating base through the cooperation of the assisting rotating shaft and the assisting rotating groove, and the rotating part of the other rotating mechanism is slidably and rotatably connected with the opposite end of the assisting rotating base through the cooperation of the assisting rotating shaft and the assisting rotating groove; an assisting rotating part is arranged between each rotating part and the base, each rotating part and the corresponding assisting rotating part are rotatably connected through the cooperation of the rotating shaft and the rotating hole, and each assisting rotating part and the base are rotatably connected through the cooperation of the arc track and the arc groove.

14. The folding device according to claim 1, characterized in that, It further includes a linkage mechanism, the linkage mechanism includes two connecting shafts arranged in parallel at intervals, two connecting rod parts and a gear combination, one of the connecting shafts is connected to one side of the base, the other connecting shaft is connected to the opposite side of the base, one of the connecting rod parts is rotatably sleeved on one of the connecting shafts relative to the base, the other connecting rod part is rotatably sleeved on the other connecting shaft relative to the base, the gear combination is arranged between the two connecting rod parts, and the two connecting rod parts can rotate synchronously through the gear combination; one end of one of the connecting rod parts away from the base is slidably connected to one of the connecting parts, and one end of the other connecting rod part away from the base is slidably connected to the other connecting part.

15. A folding housing, characterized in that, The folding housing includes a folding device as described in any one of claims 1-14 and two frames, the folding device being located between the two frames, and the two frames being respectively connected to connecting members on opposite sides of the folding device.

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

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