Folding device, folding shell and electronic equipment

Abstract

The invention provides a folding device which comprises a base, connecting shafts, connecting rod pieces, a linkage piece and a positioning mechanism, a pair of connecting shafts are arranged on the two opposite sides of the base respectively, the two connecting shafts are rotationally connected to the two connecting shafts respectively, the linkage piece is arranged between the two connecting rod pieces and connected to the connecting shafts, and the positioning mechanism is arranged on the base. The two connecting rod pieces are connected with the linkage piece in a matched mode through spiral faces, the positioning mechanism comprises a positioning assembly and an abutting-against part capable of abutting against the positioning assembly in a sliding mode, the positioning assembly is arranged on one of the base and the linkage piece, and the abutting-against part is arranged on the other one of the base and the linkage piece; when one connecting rod piece or a pair of connecting rod pieces rotate around the corresponding connecting shaft, the linkage piece slides relative to the base in the axial direction of the connecting shaft, the two connecting rod pieces synchronously and reversely rotate relative to the base, the abutting part slides relative to the positioning assembly and has frictional resistance, and the frictional resistance is used for positioning the connecting rod pieces relative to the base. The invention further provides the folding shell and the electronic equipment.

Description

Technical Field

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

[0002] With the development of display equipment, bendable flexible display screens have appeared. Folding screen devices equipped with bendable flexible display screens are becoming more and more popular due to their unique shape and diverse functions. The bendable flexible display screens of existing folding screen devices are generally supported by a folding device, which generally only uses a combination of springs and cams to achieve the adjustment of the torque feel of the folding device and the hovering of the folding screen device within a specific angle range. However, as the number of folding times of the folding screen device increases, the elastic force of the spring will decay or even fatigue and break, and the cam surface will also deform due to wear, resulting in serious attenuation of the torque of the shaft and a poor bending feel of the entire machine, making it difficult to meet the requirements of hovering, torque feel, flattening or folding stop of the folding screen device. 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] The present application provides a folding device, which includes:

[0005] Pedestal;

[0006] A pair of connecting shafts are respectively arranged on opposite sides of the base;

[0007] Connecting rods, wherein one of the connecting rods is rotatably connected to one of the connecting shafts, and the other connecting rod is rotatably connected to the other connecting shaft;

[0008] A linkage member, wherein the linkage member is disposed between the two connecting rod members and connected to a pair of connecting shafts, the linkage member can slide relative to the base along the axial direction of the connecting shaft, and the two connecting rod members are respectively connected to the linkage member through a helical surface fit; and

[0009] A positioning mechanism, the positioning mechanism includes a positioning component and a resisting top portion that can slidably resist the positioning component, the positioning component is arranged at one of the base and the linkage member, and the resisting top portion is arranged at the other of the base and the linkage member; when one of the connecting rod members or a pair of the connecting rod members rotates around the corresponding connecting shaft, the linkage member slides relative to the base along the axial direction of the connecting shaft, and the two connecting rod members rotate synchronously in opposite directions relative to the base, so that the resisting top portion slides relative to the positioning component and has friction resistance, and the friction resistance is used for positioning the connecting rod member relative to the base.

[0010] The present application also provides a folding shell, which includes a folding device and at least two frames, wherein the folding device includes a base, a connecting shaft, a connecting rod, a linkage and a positioning mechanism, wherein a pair of the connecting shafts are respectively arranged on opposite sides of the base; wherein one of the connecting rods is rotatably connected to one of the connecting shafts, and the other connecting rod is rotatably connected to the other connecting shaft; the linkage is arranged between the two connecting rods, and the linkage is connected to a pair of the connecting shafts, and the linkage can slide relative to the base along the axial direction of the connecting shaft, and the two connecting rods are respectively connected to the linkage by a spiral surface; the positioning mechanism includes a positioning component and a slidable The abutting top portion of the positioning assembly is abutted, the positioning assembly is arranged on one of the base and the linkage member, and the abutting top portion is arranged on the other of the base and the linkage member; when one of the connecting rod members or a pair of the connecting rod members rotates around the corresponding connecting shaft, the linkage member slides relative to the base along the axial direction of the connecting shaft, and the two connecting rod members rotate synchronously in opposite directions relative to the base, so that the abutting top portion slides relative to the positioning assembly and has friction resistance, and the friction resistance is used for positioning the connecting rod member relative to the base; the folding device is located between the two adjacent frames, and the opposite sides of the folding device are respectively connected to the two adjacent frames.

[0011] The present application also provides an electronic device, which includes a flexible screen and a folding shell, wherein the folding shell includes a folding device and at least two frames, wherein the folding device includes a base, a connecting shaft, a connecting rod, a linkage member and a positioning mechanism, wherein a pair of the connecting shafts are respectively arranged on opposite sides of the base; wherein one of the connecting rods is rotatably connected to one of the connecting shafts, and the other connecting rod is rotatably connected to the other connecting shaft; the linkage member is arranged between the two connecting rods, and the linkage member is connected to a pair of the connecting shafts, wherein the linkage member can slide relative to the base along the axial direction of the connecting shaft, and the two connecting rods are respectively connected to the linkage member through a spiral surface; the positioning mechanism includes a positioning component and a slidable bearing The abutting top portion of the positioning assembly is arranged on one of the base and the linkage member, and the abutting top portion is arranged on the other of the base and the linkage member; when one of the connecting rod members or a pair of the connecting rod members rotates around the corresponding connecting shaft, the linkage member slides relative to the base along the axial direction of the connecting shaft, and the two connecting rod members rotate synchronously in opposite directions relative to the base, so that the abutting top portion slides relative to the positioning assembly and has friction resistance, and the friction resistance is used for positioning the connecting rod member relative to the base; the folding device is located between the two adjacent frames, and the opposite sides of the folding device are respectively connected to the two adjacent frames; the flexible screen is connected to the folding shell.

[0012] The connecting rod member of the folding device of the present invention can rotate around the corresponding connecting shaft, the linkage member is located between the two connecting rod members and is slidably connected to a pair of connecting shafts, the connecting rod member and the linkage member are connected by a spiral surface, and the linkage member and the base can slidably abut against each other through a positioning assembly and abutment top; when the connecting rod member rotates relative to the base, the linkage member slides relative to the base, and the positioning assembly and the abutment top abut against each other slidably to have friction resistance, and the friction resistance can meet the hovering effect of the folding device, enhance the torque feel, and meet the flattening or folding stop of the folding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the implementation. Obviously, the drawings described below relate to some implementations of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative work.

[0014] Figure 1 is a schematic diagram of a three-dimensional structure of an electronic device in one embodiment of the present application;

[0015] Figure 2 yes Figure 1 A schematic diagram of a three-dimensional structure decomposition of a foldable housing and a flexible screen of an electronic device;

[0016] Figure 3 yes Figure 2 A schematic diagram of the three-dimensional structure of the folded shell;

[0017] Figure 4 yes Figure 3 A further three-dimensional structural schematic diagram of the folding shell in FIG.

[0018] Figure 5 yes Figure 4 A further three-dimensional structural schematic diagram of the folding device in FIG.

[0019] Figure 6 yes Figure 5 A schematic diagram of a three-dimensional structure of the folding device from another perspective;

[0020] Figure 7 yes Figure 5 An enlarged three-dimensional structure diagram of one of the positioning components;

[0021] Figure 8 yes Figure 7 A schematic diagram of a three-dimensional structure of the positioning component from another perspective;

[0022] Fig. 9 yes Figure 6An enlarged view of section IX in FIG.

[0023] Fig.10 yes Figure 5 An enlarged view of one of the rotation-assisting components;

[0024] Fig.11 yes Fig.10 A schematic diagram of the three-dimensional structure of the rotation-assisting assembly from another perspective;

[0025] Fig.12 yes Fig.10 A schematic diagram of the three-dimensional structure of the rotation-assisting component;

[0026] Fig.13 yes Fig.12 A schematic diagram of the three-dimensional structure of the rotation-assisting assembly from another perspective;

[0027] Fig.14 yes Fig.12 A schematic diagram of a further three-dimensional structural decomposition of the rotation-assisting component;

[0028] Fig.15 yes Fig.14 A schematic diagram of the three-dimensional structure of the rotation-assisting assembly from another perspective;

[0029] Fig.16 yes Fig.14 A magnified three-dimensional structure diagram of the connecting rod, linkage and supporting member;

[0030] Fig.17 yes Fig.16 A three-dimensional structural diagram of the connecting rod member, the linkage member and the supporting member from another perspective;

[0031] Fig.18 yes Figure 3 A three-dimensional cross-sectional view of a folding device in FIG.

[0032] Fig.19 yes Fig.18 An enlarged view of section XIX in FIG.

[0033] Fig. 20 yes Figure 2 A schematic diagram of a three-dimensional structure of the folding shell in the middle folded state;

[0034] Fig.21 yes Fig. 20 A magnified three-dimensional structure diagram of the folding device;

[0035] Fig. 22 yes Fig.21 A three-dimensional cross-sectional view of a folding device in FIG.

[0036] Fig.23 yes Fig. 22An enlarged view of section XXIII in FIG.

[0037] Fig.24 yes Figure 1 A schematic diagram of a three-dimensional structure of the foldable shell in a fully folded state;

[0038] Fig.25 yes Fig.24 A magnified three-dimensional structure diagram of the folding device;

[0039] Fig.26 yes Fig.25 A three-dimensional cross-sectional view of a folding device in FIG.

[0040] Fig. 27 yes Fig.26 An enlarged view of section XXVII in FIG. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In addition, the following descriptions of the various embodiments are made with reference to the attached drawings to illustrate specific embodiments that the present application may be implemented in. Directional terms mentioned in the present application, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the present application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0043] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set on..." should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] Please also read Figures 1 to 6The electronic device 100 in one embodiment of the present invention includes a folding housing 20 and a flexible screen 50 connected to the folding housing 20, and the flexible screen 50 can be bent or flattened along with the folding housing 20. The folding housing 20 includes at least two frames 21 and a folding device 22 connected between the at least two frames 21, the folding device 22 is located between two adjacent frames 21, and the opposite sides of the folding device 22 are respectively connected to the two frames 21, and the two frames 21 are folded or flattened by the folding device 22. The folding device 22 includes a base 23, a rotation-assisting assembly and a supporting mechanism 24. The rotation-assisting assembly includes a connecting shaft 260, a connecting rod 261, a linkage 27, a rotating mechanism 25 and a positioning mechanism 28. The base 23 is provided with connecting shafts 260 on opposite sides; one connecting rod 261 is rotatably connected to one of the connecting shafts 260, and the other connecting rod 261 is rotatably connected to the other connecting shaft 260; the linkage 27 is provided between the two connecting rods 261, and the linkage 27 is connected to a pair of connecting shafts 260. The linkage 27 can be rotated along the connecting shafts 260. The two connecting rods 261 are respectively connected to the linkage member 27 through the helical surface. When one or both connecting rods 261 rotate around the corresponding connecting shaft 260, the linkage member 27 slides along the axial direction of the connecting shaft 260 to drive the two connecting rods 261 to rotate synchronously relative to the base 23 to fold or unfold each other. That is, the linkage member 27 can slide in the first direction or the second direction to drive the two connecting rods 261 to rotate synchronously relative to the base 23 to fold or unfold each other. It should be noted that the first direction is opposite to the second direction, and the first direction and the second direction are both parallel to the axial direction of the connecting shaft 260. The two rotating mechanisms 25 are rotatably connected to the opposite sides of the base 23, and the ends of the two connecting rods 261 away from the base 23 are slidably connected to the two rotating mechanisms 25. The first rotating axis of the rotating mechanism 25 and the base 23 is parallel to the axis of the connecting shaft 260. The positioning mechanism 28 includes a positioning component 281 and a top portion 285 that can movably resist the positioning component 281. The positioning component 281 is provided at one of the base 23 and the linkage member 27, and the top portion 285 is provided at the base 23 and the linkage member 27. 7; when one of the connecting rods 261 or a pair of connecting rods 261 rotates around the corresponding connecting shaft 260, the linkage member 27 slides along the axial direction of the connecting shaft 260 relative to the base 23, and the two connecting rods 261 rotate synchronously in opposite directions relative to the base 23, so that the abutting portion 285 slides relative to the positioning assembly 281 and has a friction resistance, and the friction resistance is used for positioning the connecting rod 261 relative to the base 23, that is, the friction resistance can hinder the frame 21 and the connecting rod 261 from rotating relative to the base 23.

[0045] The flexible screen 50 includes a bendable area 51 corresponding to the folding device 22, and two non-bending areas 53 connected to opposite sides of the bendable area 51. The flexible screen 50 is arranged on the front of the two frames 21 and the front of the folding device 22. Specifically, the two non-bending areas 53 of the flexible screen 50 can be fixedly connected to the front of the two frames 21, respectively, and the bendable area 51 is attached to the front of the folding device 22. The bendable area 51 of the flexible screen 50 can be bent or flattened with the folding device 22. The flexible screen 50 can be, but is not limited to, a flexible display screen, a flexible touch screen, a flexible touch display screen, and other flexible components with corresponding functions, or a flexible component fixedly attached to a flexible support plate, such as a flexible display screen and a flexible touch screen attached to a flexible steel plate. The front side refers to the side facing the same direction as the light-emitting surface of the flexible screen 50, and the back side refers to the side facing away from the light-emitting surface of the flexible screen 50. The electronic device 100 is, for example, but not limited to, a mobile phone, a tablet computer, a display, a liquid crystal panel, an OLED panel, a television, a smart watch, a VR head-mounted display, a car display, or any other product or component with a display function.

[0046] The connecting rod 261 of the folding device 22 of the present invention can rotate around the corresponding connecting shaft 260, the linkage member 27 is located between the two connecting rods 261 and is slidably connected to a pair of connecting shafts 260 along the axial direction of the connecting shaft 260, the connecting rod 261 and the linkage member 27 are connected by a spiral surface, and the linkage member 27 and the base 23 can slidably abut each other through the positioning component 281 and the abutting top 285, the end of the connecting rod 261 away from the base 23 is slidably connected to the corresponding rotating mechanism 25, the rotating mechanism 25 is rotatably connected to the base 23, and the frame 21 is connected to the end of the rotating mechanism 25 away from the base 23; when the frame 21 and the connecting rod 261 rotate relative to the base 23 with the rotating mechanism 25, the positioning component 281 and the abutting top 285 slide against each other and have friction resistance, which can meet the hovering effect of the folding shell 20, improve the torque feel, and meet the flattening or folding stop of the folding shell 20.

[0047] like Figure 2-Figure 4As shown, the frame 21 includes a front face 211, a back face 213, two opposite side faces 214 and two end faces 215. The folding device 22 is connected between two adjacent side faces 214 of the two frames 21. The bendable area 51 of the flexible screen 50 is attached to the front face of the folding device 22, and the non-bending area 53 of the flexible screen 50 is connected to the front face 211 of the frame 21. A mounting groove 216 is provided on the side of the front face 211 of each frame 21 close to the folding device 22. The mounting groove 216 passes through the front face 211 of the frame 21, and the opposite ends of the mounting groove 216 extend to the opposite end faces 215 close to the frame 21. The opposite sides of the folding device 22 are respectively accommodated in the mounting grooves 216 of the two frames 21, and the two rotating mechanisms 25 on the opposite sides of each rotation-assisting assembly are respectively connected to the mounting grooves 216 of the two frames 21 on the sides away from the base 23. Specifically, the frame 21 is provided with a plurality of connection holes 217 on the bottom surface of the mounting groove 216, and a plurality of locking pieces are respectively passed through the plurality of connection holes 217 and connected to a side of the rotating mechanism 25 away from the base 23; a plurality of receiving spaces (not shown) are provided on the back side of the frame 21, and the receiving spaces are used to install electronic components such as circuit boards and batteries.

[0048] like Figure 3-Figure 9As shown, the positioning assembly 281 includes a positioning member 282, and the positioning member 282 includes a first positioning surface 2822 and a second positioning surface 2824. The first positioning surface 2822 and the second positioning surface 2824 are arranged on opposite sides of the positioning member 282 along the sliding direction of the linkage member 27 relative to the base 23; the abutment top 285 includes a first abutment top surface 2852 and a second abutment top surface 2854 located on opposite sides thereof, and when a pair of connecting rod members 261 are in a flattened state relative to the base 23, the first positioning surface 2822 is in contact with the first abutment top surface 2852; when a pair of connecting rod members 261 are in a fully folded state relative to the base 23, the second positioning surface 2824 is in contact with the second abutment top surface 2854. In this embodiment, the positioning member 282 is arranged on the side of the base 23 facing the linkage member 27, and the abutting top portion 285 is arranged on the side of the linkage member 27 facing the base 23. The abutting top portion 285 can slide against the positioning member 282 relative to the base 23 along with the linkage member 27, so that the first positioning surface 2822 can be attached to the first abutting top surface 2852 or the second positioning surface 2824 can be attached to the second abutting top surface 2854; that is, when the two frame bodies 21 are in a flattened state, the first positioning surface 2822 of the positioning member 282 is attached to the first abutting top surface 2852 of the abutting top portion 285, so that the two frame bodies 21 remain in a flattened state; when the two frame bodies 21 are in a fully folded state, the second positioning surface 2824 of the positioning member 282 is attached to the second abutting top surface 2854 of the abutting top portion 285, so that the two frame bodies 21 remain in a fully folded state. The flattened state means that the front sides 211 of the two frames 21 are coplanar, that is, the angle between the two front sides 211 is 180 degrees; the fully folded state means that the front sides 211 of the two frames 21 are parallel to each other, that is, the angle between the two front sides 211 is 0 degrees.

[0049] In other embodiments, the positioning member 282 is disposed on a side of the linkage member 27 facing the base 23 , and the abutting portion 285 is disposed on a side of the base 23 facing the linkage member 27 .

[0050] Optionally, the positioning member 282 further includes a third positioning surface 2826, which is connected between the first positioning surface 2822 and the second positioning surface 2824, and the abutting top portion 285 further includes a third abutting top surface 2856, which is connected between the first abutting top surface 2852 and the second abutting top surface 2854; when the pair of link members 261 is in a middle folded state relative to the base 23, the third positioning surface 2826 is attached to the third abutting top surface 2856, that is, when the two frames 21 are in a middle folded state relative to the base 23, the third positioning surface 2826 is attached to the third abutting top surface 2856. Specifically, when the two frames 21 are in a middle folded state, the third abutting top surface 2856 of the abutting top portion 285 on the linkage member 27 is attached to the third positioning surface 2826 of the positioning assembly 281, so that the two frames 21 remain in a middle folded state. The intermediate folding state refers to an angle between the front surfaces 211 of the two frames 21 being greater than 0 degrees and less than 180 degrees.

[0051] Specifically, the positioning member 282 includes a positioning block 2820 and two connecting columns 2828. The positioning block 2820 includes a front side and a back side 2821. The two connecting columns 2828 are connected to the back side 2821 at intervals. The first positioning surface 2822, the second positioning surface 2824 and the third positioning surface 2826 surround the front side. The third positioning surface 2826 is parallel to the plane where the axes of the pair of connecting shafts 260 are located, and the first positioning surface 2822 and the second positioning surface 2824 are both inclined relative to the third positioning surface 2826; in this embodiment, the third positioning surface 2826 is parallel to the back side 2821 of the positioning block 2820, the first positioning surface 2822 and the second positioning surface 2824 are located on opposite sides of the positioning block 2820, and the third positioning surface 2826 is connected between the first positioning surface 2822 and the second positioning surface 2824; the first intersection edge of the first positioning surface 2822 and the third positioning surface 2826 is farther away from the back side 2821 than the side of the first positioning surface 2822 away from the third positioning surface 2826, and the second intersection edge of the second positioning surface 2824 and the third positioning surface 2826 is farther away from the back side 2821 than the side of the second positioning surface 2824 away from the third positioning surface 2826. Optionally, the first intersection edge between the first positioning surface 2822 and the third positioning surface 2826 is an arc transition surface, and the second intersection edge between the second positioning surface 2824 and the third positioning surface 2826 is an arc transition surface.

[0052] like Fig. 9 and Fig.10As shown, the abutting top 285 is a roughly trapezoidal protrusion disposed on the side of the linkage member 27 facing the base 23, the first abutting top surface 2852 and the second abutting top surface 2854 are respectively located on two opposite sides of the trapezoidal protrusion, and the third abutting top surface 2856 is connected between the first abutting top surface 2852 and the second abutting top surface 2854; the third abutting top surface 2856 is parallel to the third positioning surface 2826, and the first abutting top surface 2852 and the second abutting top surface 2854 are both relative to the third abutting top surface 28 56, the first abutting top surface 2852 is parallel to the first positioning surface 2822, and the second abutting top surface 2854 is parallel to the second positioning surface 2824; specifically, one side of the first abutting top surface 2852 is connected to the third abutting top surface 2856, and the other side of the first abutting top surface 2852 is connected to the back of the linkage member 27; one side of the second abutting top surface 2854 is connected to the third abutting top surface 2856, and the other side of the second abutting top surface 2854 is connected to the back of the linkage member 27. Optionally, the third intersection edge between the first abutting top surface 2852 and the third abutting top surface 2856 is a circular arc transition surface, and the fourth intersection edge between the second abutting top surface 2854 and the third abutting top surface 2856 is a circular arc transition, so as to facilitate the sliding of the abutting top 285 relative to the positioning member 282.

[0053] Optionally, at least one of the first positioning surface 2822, the second positioning surface 2824 and the third positioning surface 2826 is provided with a first damping mechanism 2823; or / and at least one of the first abutting surface 2852, the second abutting surface 2854 and the third abutting surface 2856 is provided with a second damping mechanism 2853. In this embodiment, the first positioning surface 2822, the second positioning surface 2824 and the third positioning surface 2826 are all provided with a first damping mechanism 2823; the first abutting surface 2852, the second abutting surface 2854 and the third abutting surface 2856 are all provided with a second damping mechanism 2853. The first damping mechanism 2823 on the first positioning surface 2822 and the second damping mechanism 2853 on the first abutting surface 2852 can increase the friction resistance between the first positioning surface 2822 and the first abutting surface 2852, the first damping mechanism 2823 on the second positioning surface 2824 and the second damping mechanism 2853 on the second abutting surface 2854 can increase the friction resistance between the second positioning surface 2824 and the second abutting surface 2854, the first damping mechanism 2823 on the third positioning surface 2826 and the second damping mechanism 2853 on the third abutting surface 2856 can increase the friction resistance between the third positioning surface 2826 and the third abutting surface 2856; the damping mechanism can be but is not limited to a small damping protrusion, a damping pore or a rough surface, etc.

[0054] In other embodiments, a first damping mechanism 2823 is provided on the first positioning surface 2822, or a second damping mechanism 2853 is provided on the first abutting surface 2852; a first damping mechanism 2823 is provided on the second positioning surface 2824, or a second damping mechanism 2853 is provided on the second abutting surface 2854; a first damping mechanism 2823 is provided on the third positioning surface 2826, or a second damping mechanism 2853 is provided on the third abutting surface 2856.

[0055] like Figure 5 and Figure 7-Figure 9 As shown, the positioning assembly 281 also includes a push piece 283, and the positioning member 282 is connected to the push piece 283, and the push piece 283 is used to push the positioning member 282 against the top 285. The push piece 283 is connected to the base 23, and the positioning member 282 is arranged on the side of the push piece 283 away from the base 23. The positioning member 282 and the push piece 283 can be fixedly connected by means of snap connection, adhesive connection, etc. In this embodiment, the push piece 283 is provided with a positioning hole 2832 on the side facing the positioning member 282, and the connecting column 2828 of the positioning member 282 is snapped into the positioning hole 2832, so that the positioning member 282 is fixedly connected to the push piece 283. The push piece 283 can be, but not limited to, an elastic rubber block, an elastic plastic block, a spring silicone block or a spring, etc.; in this embodiment, the push piece 283 is an elastic rubber block. The push piece 283 and the base 23 can be fixedly connected by means of, but not limited to, adhesive connection, snap connection, etc.

[0056] The positioning assembly 281 further includes a connecting glue 284, which is connected between the push member 283 and the base 23 so that the push member 283 can be firmly connected to the base 23. Preferably, two guide holes 2842 are provided on the front of the connecting glue 284, and the two connecting columns 2828 of the positioning member 282 are passed through the two guide holes 2842 of the connecting glue 284.

[0057] like Figure 4-Figure 6As shown, the base 23 includes a base body 231 and a back cover 235. The side of the push member 283 facing away from the positioning member 282 is connected to the back cover 235. The base body 231 is provided with a through slot 2310 facing the positioning member 282, and the positioning member 282 is accommodated in the through slot 2310. The top portion 285 is provided on the side of the linkage member 27 facing the positioning assembly 281, and the top portion 285 can be slidably accommodated in the through slot 2310 along with the linkage member 27. In this embodiment, the folding device 22 includes three rotation-assisting assemblies, which are arranged along the axial direction parallel to the connecting shaft 260. Specifically, the opposite ends of the folding device 22 are respectively provided with rotation-assisting assemblies, and the middle part of the folding device 22 is provided with a rotation-assisting assembly. Each rotation-assisting assembly includes a seat body 231 positioned on the back cover 235, a pair of connecting shafts 260, two rotating mechanisms 25, two connecting rods 261, a linkage member 27 slidably mounted on the pair of connecting shafts 260 and located between the two connecting rods 261, and a positioning mechanism 28. The two rotating mechanisms 25 are rotatably connected to the opposite sides of the base 23, respectively, the two connecting rods 261 are rotatably connected to the pair of connecting shafts 260, respectively, the ends of the two connecting rods 261 away from the base 23 are slidably connected to the two rotating mechanisms 25, and the connecting rods 261 and the linkage member 27 are connected by a helical surface. In this embodiment, the base 23 includes three seat bodies 231 and a back cover 235, and a positioning mechanism 28 is provided between the linkage member 27 and the back cover 235. Specifically, the positioning assembly 281 is connected to the back cover 235, and the abutting top 285 is provided on the linkage member 27. In the embodiment, the positioning assembly 281 is connected to the linkage member 27, and the abutment top portion 285 is disposed on the back cover 235. In some embodiments, the positioning assembly 281 may also be connected to the seat body 231.

[0058] In other embodiments, the folding device 22 may also include two rotation-assisting components, which are disposed at opposite ends of the folding device 22, each rotation-assisting component including a seat body 231, a pair of connecting shafts 260, two rotating mechanisms 25 rotatably connected to opposite sides of the base 23, two connecting rods 261 rotatably connected to the pair of connecting shafts 260, slidably sleeved on the connecting shafts 260 and located between the two connecting rods 261, and at least one positioning mechanism 28. In this embodiment, the base 23 includes two seat bodies 231 and a back cover 235, and a positioning mechanism 28 is disposed between the linkage member 27 and the back cover 235, specifically, the positioning component 281 is connected to the back cover 235, and the abutting top 285 is disposed on the linkage member 27.

[0059] In other embodiments, the folding device 22 may also only include an auxiliary rotation component, which is arranged in the middle part of the folding device 22, and the auxiliary rotation component includes a seat body 231, a pair of connecting shafts 260 connected to opposite sides of the base 23, two rotating mechanisms 25 rotatably connected to opposite sides of the base 23, two connecting rods 261 rotatably connected to the pair of connecting shafts 260 respectively, slidably sleeved on the pair of connecting shafts 260 and located between the two connecting rods 261, and at least one positioning mechanism 28; in this embodiment, the base 23 includes a seat body 231 and a back cover 235, and a positioning mechanism 28 is provided between the linkage member 27 and the back cover 235, specifically, the positioning component 281 is connected to the back cover 235, and the top 285 is provided on the linkage member 27.

[0060] Please also read Figure 3-Figure 6 and Figure 10-Figure 17 The connecting rod 261 and the rotating mechanism 25 are slidably connected through the cooperation of a slide groove and a slide rail. The slide groove is provided at one of the connecting rod 261 and the rotating mechanism 25, and the slide rail is provided at the other of the connecting rod 261 and the rotating mechanism 25. The slide rail is slidably inserted in the slide groove, and the frame 21 is connected to the side of the rotating mechanism 25 away from the base 23. Specifically, the rotating mechanism 25 includes a rotating member 250 and a connecting member 255. The rotating member 250 is rotatably connected to the seat body 231, and one end of the rotating member 250 away from the seat body 231 is rotatably connected to the connecting member 255; one end of two connecting rods 261 away from the seat body 231 is slidably connected to the two connecting members 255 respectively, and each connecting rod 261 is slidably connected to the corresponding connecting member 255 through the cooperation of a slide rail and a slide groove; in this embodiment, a slide rail 2610 is provided at one end of the connecting rod 261 away from the seat body 231, and the connecting member 255 is provided with a slide groove 2550. The slide rail 2610 is slidably inserted into the slide groove 2550, and the length direction of the slide groove 2550 is perpendicular to the axis of the connecting shaft 260. In other embodiments, a slide groove is provided at one end of the connecting rod 261 away from the seat body 231, and the connecting member 255 is provided with a slide rail, the slide groove is perpendicular to the axis of the connecting shaft 260, and the slide rail is slidably inserted into the slide groove.

[0061] The support mechanism 24 includes a first middle support member 242, a second middle support member 244 hinged to one side of the first middle support member 242, and two side support members 246, wherein the side support member 246 is connected to the side of the first middle support member 242 away from the second middle support member 244, and the other side support member 246 is connected to the side of the second middle support member 244 away from the first middle support member 242. The first middle support member 242 and the second middle support member 244 cover the front surface of the seat body 231, and the first middle support member 242 and the second middle support member 244 are rotatably connected through the cooperation of a rotating shaft and a rotating hole, the rotating shaft is provided in one of the first middle support member 242 and the second middle support member 244, and the rotating hole is provided in the other of the first middle support member 242 and the second middle support member 244, and the axis of the rotating shaft is parallel to the axis of the connecting shaft 260.

[0062] The first middle support member 242, the second middle support member 244 and the side support member 246 are all rectangular plates, and the two side support members 246 are rotatably connected to the two connecting rod members 261 respectively, and the two side support members 246 are rotatably connected to the two connecting members 255 on the side away from the seat body 231. Specifically, the side support member 246 and the connecting rod member 261 are slidably and rotatably connected through the cooperation of the adjustment groove and the adjustment shaft, the adjustment groove is provided in one of the side support member 246 and the connecting rod member 261, and the adjustment shaft is provided in the other of the side support member 246 and the connecting rod member 261, and the axis of the adjustment shaft is parallel to the first rotation axis L1 between the rotating member 250 and the base 23, and the two first rotation axes L1 are spaced and parallel. In this embodiment, an adjustment shaft 2611 is provided at one end of the connecting rod 261 away from the seat body 231, and an adjustment slot 2460 is provided at one side of the side support member 246 away from the base 23, and the adjustment shaft 2611 is rollably inserted into the adjustment slot 2460. When the two side support members 246 are folded or flattened relative to the base 23, the adjustment shaft 2611 slides and rotates in the adjustment slot 2460.

[0063] Specifically, the side support member 246 includes a side support plate 2461 and an adjustment plate 2462 disposed on the back of the side support plate 2461, and an adjustment slot 2460 is disposed on the adjustment plate 2462. In this embodiment, three adjustment plates 2462 are disposed on the back of the side support plate 2461, wherein two adjustment plates 2462 are located at opposite ends of the side support plate 2461, and another adjustment plate 2462 is located in the middle of the side support plate 2461, and the adjustment shafts 2611 of the connecting rods 261 of the three rotation-assisting components can be movably inserted into the adjustment slots 2460 of the corresponding adjustment plates 2462. The adjustment slot 2460 extends from one side of the side support plate 2461 to the other side, and the middle of the adjustment slot 2460 is bent toward the side away from the side support plate 2461. The adjustment groove 2460 includes a first positioning section 2463 and a second positioning section 2464 located at opposite ends thereof, and the first positioning section 2463 is farther away from the middle support member than the second positioning section 2464. When the two side support members 246 are in a completely flattened state, the adjustment shaft 2611 is positioned at the first positioning section 2463 so that the front faces of the two side support members 246, the front faces of the first middle support member 242, and the front faces of the second middle support member 244 are coplanar, thereby stably supporting the flexible screen to prevent the flexible screen from sinking and being damaged. When the two side support members 246 are in a completely folded state, the adjustment shaft 2611 is positioned at the second positioning section 2464 so that the front faces of the two side support members 246, the front faces of the first middle support member 242, and the front faces of the second middle support member 244 form a water drop-shaped storage space to facilitate storage of the bendable area of ​​the flexible screen. In this embodiment, the outer surface of the adjustment plate 2462 facing away from the side support plate 2461 is set to be an arc-shaped surface to facilitate the folding or unfolding of the two side support members 246.

[0064] The rotation axis between the side support member 246 and the connecting member 255 is parallel to the first rotation axis L1. The side support member 246 and the connecting member 255 are rotatably connected through the cooperation of the first circular arc groove and the first circular arc rail. The first circular arc groove is provided in one of the side support member 246 and the connecting member 255, and the first circular arc rail is provided in the other of the side support member 246 and the connecting member 255. The axis of the first circular arc groove is parallel to the first rotation axis L1. Specifically, a plurality of arc plates 2465 are provided on the side of the side support member 246 away from the first middle support member 242, and an arc groove 2466 is provided on each arc plate 2465. The plurality of arc grooves 2466 are coaxial, and one end of the arc groove 2466 extends to the back side of the side support plate 2461, and the other end of the arc groove 2466 passes through the arc plate 2465 to separate the side of the middle support member 2461. The opposite two ends of the connecting member 255 are respectively provided with first arc rails 2552, and the two first arc rails 2552 are respectively rotatably accommodated in the corresponding two arc grooves 2466.

[0065] In other embodiments, the first arc plate of the side support member 246 is provided with a first arc rail, and the end surface of the connecting member 255 is provided with a first arc groove corresponding to the first arc rail, and the first arc rail is rotatably accommodated in the first arc groove.

[0066] The first rotation axis L1 between the rotating member 250 and the seat body 231 is parallel to the second rotation axis L2 between the connecting rod member 261 and the seat body 231, and the sliding direction of the slide rail of the connecting rod member 261 in the slide groove is perpendicular to the first rotation axis L1; specifically, the two rotating members 250 rotate relative to the seat body 231 around the two first rotation axes L1 respectively, and the two first rotation axes L1 are parallel in gap; the two connecting rod members 261 rotate relative to the seat body 231 around the two second rotation axes L2 respectively, and the two second rotation axes L2 are parallel in gap, and the two second rotation axes L2 are coaxial with the two connecting shafts 260 respectively, and the first rotation axis L1 is parallel to the second rotation axis L2. The rotating member 250 and the seat body 231 are rotatably connected through the cooperation of the second circular arc track and the second circular arc groove, and the axis of the second circular arc track is colinear with the first rotation axis L1. The second circular arc track is provided on one of the rotating member 250 and the base 23, and the second circular arc groove is provided on the other of the rotating member 250 and the base 23. In this embodiment, a second arc track 2501 is provided at one end of the rotating member 250 away from the connecting member 255, and second arc grooves 2311 are respectively provided on opposite sides of the seat body 231, and the second arc track 2501 is rotatably accommodated in the second arc grooves 2311. The rotating member 250 and the connecting member 255 are rotatably connected via a rotating shaft, and a third rotation axis between the rotating member 250 and the connecting member 255 is parallel to the first rotation axis L1.

[0067] The rotating member 250 includes a first rotating portion 2503 and a second rotating portion 2505 disposed at opposite ends thereof, a second circular arc track 2501 disposed at the end of the first rotating portion 2503, and the second rotating portion 2505 is rotatably connected to the connecting member 255. In this embodiment, the second circular arc tracks 2501 are respectively disposed at opposite ends of the first rotating portion 2503, and the two second circular arc tracks 2501 are coaxial. Two rotating cylinders 2506 spaced apart from each other are disposed on one side of the second rotating portion 2505 away from the first rotating portion 2503, and the two rotating cylinders 2506 are coaxial, and two avoiding openings 2551 spaced apart from each other are disposed at one end of the connecting member 255, and the two rotating cylinders 2506 are rotatably accommodated in the two avoiding openings 2551, respectively.

[0068] The connecting member 255 is in a strip shape, and the first arc rails 2552 are respectively provided at the opposite ends of the connecting member 255 on the side away from the rotating member 250. The connecting member 255 includes a transition part 2554 and a guide slide part 2556 provided at the opposite ends thereof and connected to the transition part 2554; one of the first arc rails 2552 is provided at one end of the transition part 2554 away from the guide slide part 2556, and the other first arc rail 2552 is provided at one end of the guide slide part 2556 away from the transition part 2554, the second rotating part 2505 is rotatably connected to the transition part 2554, the slide groove 2550 is provided on the guide slide part 2556, and the slide rail 2610 of the connecting rod 261 is slidably inserted in the slide groove 2550. Specifically, two avoidance openings 2551 are provided at intervals on the front of the adapter 2554, and a connecting hole 2553 is provided on the adapter 2554 along the length direction of the connecting member 255, and the connecting hole 2553 communicates with the two avoidance openings 2551; the two avoidance openings 2551 are used to respectively accommodate the two rotating cylinders 2506, and when the two rotating cylinders 2506 are rotatably accommodated in the two avoidance openings 2551, the connecting shaft 256 is inserted into the inner cavity of the connecting hole 2553 and the rotating cylinder 2506. A guide groove 2557 is provided on the front of the guide slide 2556, and the opposite ends of the guide groove 2557 respectively pass through the opposite sides of the guide slide 2556, and one end of the connecting rod 261 away from the seat body 231 can be slidably accommodated in the guide groove 2557; a slide groove 2550 is provided on the inner side of the guide groove 2557, and the slide groove 2550 passes through the opposite sides of the guide slide 2556 along a direction perpendicular to the first rotation axis L1. In this embodiment, the guide portion 2556 is provided with slide grooves 2550 on two opposite inner side surfaces of the guide groove 2557 , respectively. The two slide rails 2610 of the connecting rod 261 are slidably inserted into the two slide grooves 2550 .

[0069] The seat body 231 is an elongated body, and includes a first mounting portion 232 and a second mounting portion 233 located at opposite ends thereof, and a third mounting portion 236 located between the first mounting portion 232 and the second mounting portion 233. The first mounting portion 232 is used to mount the rotating member 250. The first mounting portion 232 has arc-shaped rotation-assisting grooves 2321 on opposite sides of its front surface, and the first rotating portion 2503 is rotatably accommodated in the rotation-assisting grooves 2321, and the second arc rail 2501 is rotatably accommodated in the corresponding second arc groove 2311. Specifically, the first mounting portion 232 has protrusions 2322 on opposite sides of one end of its front surface away from the third mounting portion 236, and the surface of the protrusion 2322 facing the third mounting portion 236 is provided with a second arc groove 2311. Optionally, the inner surface of the rotation-assisting groove 2321 is provided with an arc surface, and the axis of the rotation-assisting groove 2321 on the same side of the seat body 231 is collinear with the axis of the second arc groove 2311. The second mounting portion 233 includes a support bar 2331 connected to the end of the third mounting portion 236 away from the first mounting portion 232 and a positioning piece 2332 arranged on the support bar 2331 away from the third mounting portion 236; optionally, the end of the support bar 2331 away from the third mounting portion 236 is connected to the middle part of the positioning piece 2332, and the opposite ends of the positioning piece 2332 extend out of the opposite sides of the support bar 2331 respectively, and the opposite ends of the positioning piece 2332 are respectively provided with a connecting hole 2334 and a guide sliding shaft 2336, and the axis of the guide sliding shaft 2336 is parallel to the axis of the connecting hole 2334. The third mounting portion 236 includes a connecting strip 2361 connected between the first mounting portion 232 and the second mounting portion 233, two supporting pieces 2363 connected to the first mounting portion 232, and guide sliders 2365 disposed on opposite sides of the connecting strip 2361; the two supporting pieces 2363 are disposed on opposite sides of the connecting strip 2361, respectively, and the front side of the supporting piece 2363 is an arc surface. The two guide sliders 2365 are located at one end close to the second mounting portion 233. In this embodiment, the through groove 2310 is disposed at one end of the supporting strip 2331 of the second mounting portion 233 close to the positioning piece 2332, and the length direction of the through groove 2310 is parallel to the length direction of the supporting strip 2331. Optionally, a plurality of fixing holes 2313 are disposed on the front side of the seat body 231, and the plurality of fixing holes 2313 are arranged along the length direction of the seat body 231.

[0070] The front of the back cover 235 is provided with a plurality of positioning parts 2352 along its length direction, and the positioning parts 2352 are used to fix the base 23. The positioning part 2352 is provided with a positioning block 2353, and the positioning block 2353 is used to fix the positioning assembly 281; the positioning block 2353 and the positioning assembly 281 can be fixedly connected by means of, but not limited to, snap connection, adhesive connection, etc. Optionally, a positioning hole 2354 is opened on the front of the positioning block 2353, and the positioning assembly 281 is accommodated in the positioning hole 2354. In this embodiment, three positioning parts 2352 are provided on the front of the back cover 235, wherein two positioning parts 2352 are provided at opposite ends of the back cover 235, and another positioning part 2352 is provided in the middle of the back cover 235, and the bases 23 of the three rotation-assisting assemblies are respectively connected to the three positioning parts 2472. A fixing column 2357 is provided on the positioning part 2352, and the fixing column 2357 is snapped into the corresponding fixing hole 2313.

[0071] The folding device 22 also includes a resisting member 220, which is connected to the third mounting portion 236 of the base 23, and the resisting member 220 and the base 23 jointly position the rotating member 250. The resisting member 220 includes positioning portions 221 located at opposite ends thereof, and a connecting portion 225 connected between the two positioning portions 221, and a third circular arc groove 223 is respectively provided on the same side of the two positioning portions 221, and the axes of the two third circular arc grooves 223 are parallel, and the second circular arc rails 2501 on the same side of the two rotating members 250 are respectively rotatably accommodated in the two third circular arc grooves 223 of the resisting member 220. Optionally, the back side of the positioning portion 221 is set as a circular arc surface that matches the front side of the support sheet 2363, so that the resisting member 220 can slide on the support sheet 2363 along the axis direction of the third circular arc groove 223. In other embodiments, the two positioning parts 221 are provided with arc rails on the sides facing the rotating member 250, and the first rotating part 2503 of the rotating member 250 is provided with arc grooves on the sides facing the abutting member 220, and the two arc rails are rotatably accommodated in the two arc grooves. The back of the abutting member 220 is provided with a guide groove 226, and the guide slider 2365 is slidably accommodated in the guide groove 226, so that the abutting member 220 can move along the length direction of the base 23. The sides of the two positioning parts 221 facing away from the third arc groove 223 are provided with connecting holes 224, and the axes of the two connecting holes 224 are parallel.

[0072] like Figure 14-17As shown, the connecting rod 261 also includes a rotating portion 2613 and a sliding portion 2614 rotatably connected to the connecting shaft 260, and a slide rail 2610 is provided on the side of the slide portion 2614. Specifically, the rotating portion 2613 is a rotating cylinder, and the rotating cylinder is provided with a rotating hole 2612 along its axial direction, and the connecting shaft 260 is inserted into the rotating hole 2612 of the rotating cylinder; the sliding portion 2614 is a rectangular plate, and the slide rails 2610 are respectively provided on opposite sides of the rectangular plate, and the slide rails 2610 are perpendicular to the axis of the rotating cylinder. A cam 2616 is provided at one end of the rotating portion 2613, and the rotating portion 2613 and the cam 2616 are coaxial. The cam 2616 includes a concave-convex surface provided at the end of the rotating cylinder, the concave-convex surface includes a first protrusion 2616a and a first recessed portion 2616b, the first protrusion 2616a and the first recessed portion 2616b are sequentially arranged at intervals along the circumference of the rotating cylinder; the number of the first protrusions 2616a and the number of the first recessed portions 2616b can be set as needed, such as the cam 2616 may include one first protrusion 2616a and one first recessed portion 2616b, two first protrusions 2616a and two first recessed portions 2616b, three first protrusions 2616a and three first recessed portions 2616b, or four first protrusions 2616a and four first recessed portions 2616b, etc. In this embodiment, the cam 2616 includes three first protrusions 2616a and three first recessed portions 2616b arranged at intervals along the circumference of the rotating cylinder.

[0073] The connecting rod 261 is provided with a receiving groove 2617, and the linkage member 27 is passed through the pair of connecting shafts 260 and received in the receiving groove 2617. Specifically, the outer peripheral surface of the rotating part 2613 of the connecting rod 261 is provided with a receiving groove 2617, and the receiving groove 2617 extends along the radial direction of the rotating part 2613, and the receiving groove 2617 is communicated with the rotating hole 2612. Specifically, the connecting rod 261 includes a first abutting spiral surface 2617a and a second abutting spiral surface 2617b. The rotation direction of the first abutting spiral surface 2617a is opposite to that of the second abutting spiral surface 2617b. The axis of the first abutting spiral surface 2617a and the axis of the second abutting spiral surface 2617b are collinear. The first abutting spiral surface 2617a and the second abutting spiral surface 2617b are respectively located at opposite ends of the receiving groove 2617. Specifically, the first abutting spiral surface 2617a is provided at the inner end surface of the receiving groove 2617 close to the cam 2616, and the second abutting spiral surface 2617b is provided at the inner end surface of the receiving groove 2617 away from the cam 2616. The axis of the first abutting spiral surface 2617a, the axis of the second abutting spiral surface 2617b and the rotation axis of the rotating portion 2613 are collinear. The first abutting spiral surface 2617a and the second abutting spiral surface 2617b respectively rotate less than one circle around the axis of the rotating cylinder.

[0074] The first helical surface 271 and the second helical surface 273 are respectively provided on the opposite sides of the linkage member 27, that is, the first helical surface 271 and the second helical surface 273 are respectively provided on the opposite ends of each side of the linkage member 27, and the first helical surface 271 and the second helical surface 273 on the same side of the linkage member 27 are coaxial; the first abutting helical surface 2617a of the connecting rod member 261 cooperates with the first helical surface 271, and the second abutting helical surface 2617b of the connecting rod member 261 cooperates with the second helical surface 273; the first helical surface 271 and the second helical surface 273 have opposite rotation directions, the first helical surface 271 and the first abutting helical surface 2617a have the same rotation direction, and the second helical surface 273 and the second abutting helical surface 2617b have the same rotation direction. The two connecting rods 261 can rotate around a pair of connecting shafts 260 respectively, but the two connecting rods 261 cannot move along the axial direction of the connecting shaft 260. The linkage member 27 is slidably mounted on the pair of connecting shafts 260 along the axial direction of the connecting shaft 260. The linkage member 27 can only move along the axial direction of the connecting shaft 260 but cannot rotate around the connecting shaft 260. When one of the connecting rod members 261 rotates around the corresponding connecting shaft 260, the first abutting spiral surface 2617a and the second abutting spiral surface 2617b respectively slide against the first spiral surface 271 and the second spiral surface 273 on one side of the linkage member 27, so that the linkage member 27 moves axially along the connecting shaft 260. At the same time, the first spiral surface 271 and the second spiral surface 273 on the other side of the linkage member 27 slide against the first abutting spiral surface 2617a and the second abutting spiral surface 2617b of the other connecting rod member 264 respectively. Since the two connecting rod members 261 cannot move axially along the connecting shaft 260, the sliding of the linkage member 27 along the connecting shaft 260 can realize the synchronous rotation of the two connecting rod members 261 and folding or unfolding.

[0075] Specifically, the linkage 27 includes two parallel and spaced sliding cylinders 272 and a connecting plate 274 connected between the two sliding cylinders 272, a pair of connecting shafts 260 are respectively provided in the two sliding cylinders 272, a first helical surface 271 and a second helical surface 273 are respectively provided at two opposite ends of each sliding cylinder 272, and the axis of the first helical surface 271 and the axis of the second helical surface 273 are collinear; further, the first helical surface 271 is provided at a side of the sliding cylinder 272 close to the connecting plate 274, and the first helical surface 271 rotates less than one circle around the axis of the sliding cylinder 272, and the second helical surface 273 is provided at a side of the sliding cylinder 272 away from the connecting plate 274, and the second helical surface 273 rotates less than one circle around the axis of the sliding cylinder 272. The abutting top 285 is provided at the back of the connecting plate 274, the first abutting top surface 2852 is farther away from the cam 2616 than the second abutting top surface 2854, and the third abutting top surface 2856 is parallel to the back of the connecting plate 274.

[0076] The folding device 22 further includes a resisting assembly 29, which includes a resisting member 291 and an elastic member 294. The resisting member 291 is slidably mounted on a pair of connecting shafts 260. The resisting member 291 and the connecting rod member 261 cooperate with each other through a cam. The elastic member 294 is used to push the resisting member 291 and the connecting rod member 261 against each other. When the connecting rod member 261 rotates around the corresponding connecting shaft 260, there is friction resistance between the resisting member 291 and the connecting rod member 261, and the friction resistance can prevent the two connecting rod members 261 from rotating around the pair of connecting shafts 260 respectively. In this embodiment, the abutting member 291 includes two abutting cams 2910 sleeved on a pair of connecting shafts 260, and the pair of connecting shafts 260 are respectively penetrated through the cams 2616 of the two connecting rods 261 and the two abutting cams 2910 of the abutting member 291, and the two abutting cams 2910 are respectively rotatably abutted against the cams 2616 of the two connecting rods 261. Specifically, the abutting member 291 includes two parallel and spaced abutting cylinders 292 and a connecting portion 293 connected between the two abutting cylinders 292, and the axes of the two abutting cylinders 292 are spaced parallel to each other, and the two abutting cylinders 292 can be respectively slidably sleeved on the pair of connecting shafts 260.

[0077] Each of the abutting cylinders 292 is provided with an abutting cam 2910 at one end facing the connecting rod 261. Each of the abutting cams 2910 includes a concave-convex surface provided at one end of the abutting cylinder 292 away from the elastic member 294. The concave-convex surface includes a second protruding portion 2911 and a second recessed portion 2913. The second protruding portions 2911 and the second recessed portions 2913 are sequentially arranged at intervals along the circumference of the abutting cylinder 292. The number of the second protruding portions 2911 and the number of the second recessed portions 2913 can be set as required, such as the abutting cam 2910 can include one second protruding portion 2911 and one second recessed portion 2913, two second protruding portions 2911 and two second recessed portions 2913, three second protruding portions 2911 and three second recessed portions 2913, or four second protruding portions 2911 and four second recessed portions 2913, etc. In this embodiment, the abutting cam 2910 includes three second protrusions 2911 and three second recesses 2913 arranged at intervals along the circumference of the abutting cylinder 292. The axis of each abutting cam 2910 is colinear with the axis of the corresponding abutting cylinder 292. Preferably, the opposite end surfaces of the abutting member 291 form arc surfaces to facilitate the folding or unfolding of the folding device 22.

[0078] In some embodiments, one of the abutting cams 2910 on the two abutting cylinders 292 can be omitted, and the cam 2616 of one of the connecting rods 261 can be omitted.

[0079] Please also read Figure 10-Figure 19When assembling the folding device 22, the rotating cylinder 2506 of the rotating member 250 is placed in the avoidance opening 2551 of the connecting member 255, so that the inner cavity of the rotating cylinder 2506 is directly opposite to the connecting hole 2553, and one of the rotating shafts 256 is inserted into the inner cavity of the rotating cylinder 2506 and the connecting hole 2553, so that the rotating member 250 is rotatably connected to the connecting member 255; the first rotating parts 2503 of the two rotating members 250 are respectively placed in the two rotation-assisting grooves 2321 of the base 23, so that The second arc rail 2501 at one end of the rotating member 250 can be rotatably accommodated in the corresponding second arc groove 2311; the two positioning portions 221 of the resisting member 220 are respectively placed on two supporting plates 2363, so that the two guide sliding blocks 2365 can be respectively slidably accommodated in the two guide grooves 226 of the resisting member 220, and the second arc rails 2501 at one end of the two rotating members 250 away from the protrusion 2322 can be respectively rotatably accommodated in the two third arc grooves 223 of the resisting member 220. Install the positioning component 281 to the base 23. Specifically, the two connecting columns 2828 of the positioning member 282 are respectively inserted into the two positioning holes 2832 of the push member 283, and the front side of the connecting glue 284 is attached to the side of the push member 283 away from the positioning member 282. The two connecting columns 2828 are inserted into the two guide holes 2842 of the connecting glue 284. The positioning component 281 is placed in the positioning hole 2354 of the positioning block 2353 of the back cover 235, so that the connecting glue 284 is glued to the back cover 235.Position the seat body 231 on the front of the back cover 235 so that the fixing column 2357 is clamped in the corresponding fixing hole 2313; the opposite sides of the linkage member 27 are respectively accommodated in the receiving grooves 2617 of the two connecting rods 261, the sliding cylinder 272 on one side of the linkage member 27 is accommodated in the corresponding receiving groove 2617 of the connecting rod 261, and the sliding cylinder 272 on the other side is accommodated in the corresponding receiving groove 2617 of the connecting rod 264; the linkage member 27 is placed on the second mounting portion 233 so that the abutting top portion 285 is accommodated in the through groove of the second mounting portion 233 2310, the first abutting surface 2852 is fitted to the first positioning surface 2822; the two abutting cams 2910 of the abutting member 291 are respectively fitted to the cams 2616 of the two connecting rods 261, and the two elastic members 294 are placed between the abutting member 220 and the abutting member 291; the two connecting shafts 260 are respectively inserted into the two connecting holes 2334 of the seat body 231, the rotating holes 2612 of the rotating parts 2613 of the two connecting rods 261, the inner cavities of the two sliding cylinders 272 of the linkage member 27, and the two abutting cylinders of the abutting member 291. The inner cavity of the two push members 292 and the inner cavity of the two push members 283, one end of the two elastic members 294 respectively abuts against the two abutting tubes 292 of the abutting member 291, so that the two abutting cams 2910 of the abutting member 291 respectively cooperate with the cams 2616 of the two connecting rod members 261, and the other ends of the two elastic members 294 abut against each other; the slide rails 2610 of the two connecting rod members 261 are slidably inserted into the slide grooves 2550 of the two connecting members 255; the first middle support member 242 and the second middle support member 244 are hinged to each other and then fit on the seat body The front side of the seat body 231 makes the two guide slide shafts 2336 on the seat body 231 respectively inserted into the guide slide grooves of the first middle support member 242 and the second middle support member 244; the two side support members 246 are respectively placed on the front side of the rotating mechanism 25 on the opposite sides of the seat body 231, so that the adjustment shaft 2611 of the connecting rod member 261 is rotated and slidably inserted into the corresponding adjustment groove 2460 of the side support member 246, and the first arc rail 2552 of the connecting member 255 can be rotatably accommodated in the arc groove 2466 of the corresponding side support member 246.

[0080] At this time, one end of the two elastic members 294 elastically pushes the abutting member 220 to abut the two rotating members 250, so that the two rotating members 250 respectively abut the two protrusions 2322, and the two second arc rails 2501 of each rotating member 250 are rotatably accommodated in the second arc groove 2311 and the third arc groove 223 respectively. When the rotating member 250 rotates relative to the base 23, the connecting member 255 rotates with the rotating member 250 relative to the base 23 to drive the connecting rod member 261 to rotate around the corresponding connecting shaft 260, so that the connecting plate 274 slides along the axial direction of the connecting shaft 260, and the abutting top 285 slides against the positioning member 282, so that there is friction resistance between the abutting top 285 and the positioning member 282. Secondly, there is friction resistance between the rotating member 250 and the base 23 and the abutting member 220. In addition, the two abutting cams 2910 respectively abut the cams 2616 of the two connecting rod members 261, so that the two connecting rod members 261 can rotate around the two connecting shafts 260 respectively. The friction resistance between the two cams 2616 and the two abutting cams 2910 respectively prevents the rotating member 250 from rotating relative to the base 23. In the absence of external force, the two rotating members 250 are limited relative to the base 23.

[0081] When the two side support members 246 are in a fully flattened state, the adjusting shaft 2611 is positioned at the first positioning section 2463 of the side support member 246; the two rotating mechanisms 25 of each rotation-assisting assembly are in a fully flattened state, the two connecting rod members 261 are in a fully flattened state, and the two elastic members 294 elastically push the supporting member 291, so that the two top cams 2910 of the supporting member 291 respectively press against the cams 2616 of the two top connecting rod members 261, so that the two connecting rod members 261 are limited relative to the base 23, and at the same time, the first positioning surface 2822 of the positioning member 282 is positioned at the first top surface 2852 of the top 285, thereby limiting the rotation and bending of the two connecting rod members 261 relative to the base 23, so as to prevent the linkage member 27 from sliding relative to the base 23, so that the two side support members 246 maintain a stable fully flattened state, and the front faces of the two side support members 246, the front faces of the first middle support member 242 and the front faces of the second middle support member 244 are coplanar. When the two side support members 246 are in a fully folded state, the adjustment shaft 2611 is positioned at the second positioning section 2464 of the side support member 246; the two rotating mechanisms 25 are in a fully folded state, the two connecting rod members 261 are in a fully folded state, and the two elastic members 294 elastically push the supporting member 291, so that the two abutting cams 2910 of the supporting member 291 respectively abut the cams 2616 of the two connecting rod members 261, so that the two connecting rod members 261 are limited relative to the base 23, and at the same time, the positioning The second positioning surface 2824 of the member 282 is positioned on the second abutting surface 2854 of the abutting top portion 285, thereby limiting the two connecting rod members 261 from rotating and flattening relative to the base 23, so as to prevent the linkage member 27 from sliding relative to the base 23, so that the two side support members 246 can maintain a stable fully folded state, and the front of the side support members 246, the front of the first middle support member 242 and the front of the second middle support member 244 form a teardrop-shaped space to facilitate the accommodation of the bendable area 51 of the flexible screen 50. When the two side support members 246 are in the middle folded state, the two connecting rod members 261 rotate synchronously relative to the base 23 and bend at a specific angle, the linkage member 27 slides along the connecting shaft 260, and the two rotating mechanisms 25 rotate synchronously relative to the base 23 and bend at a specific angle. The two elastic members 294 elastically push the supporting member 291 to abut the two connecting rod members 261, so that there is friction resistance between the two abutting cams 2910 and the cams 2616 of the two connecting rod members 261 respectively, and there is friction resistance between the rotating member 250 and the base 23 and the abutting member 220, and the third positioning surface 2826 of the positioning member 282 is positioned at the third abutting surface 2856 of the abutting top 285, so that there is friction resistance between the third positioning surface 2826 and the third abutting surface 2856; in the absence of external force, the two side support members 246 can be maintained in any folded state except the fully flattened state and the fully folded state, so that the electronic device 100 is in any hovering state.

[0082] It should be noted that: the fully flattened state refers to the front faces of the two side support members 246 being coplanar, that is, the angle between the front faces of the two side support members 246 is 180 degrees; the fully folded state refers to the front faces of the two side support members 246 forming a teardrop-shaped space; the intermediate folded state refers to any folded state except the coplanar and teardrop-shaped space formed by the front faces of the two side support members 246, that is, the folded state of the electronic device 100 in which the angle between the front faces of the two frames 21 is greater than 0 degrees and less than 180 degrees. In this embodiment, the intermediate folded state of the folding device 22 is that the angle between the two connecting members 255 of each rotation-assisting component is 90 degrees.

[0083] Please also read Figure 1-Figure 7 , place the installed folding device 22 between the two frames 21, and fix the two opposite sides of the folding device 22 to the two frames 21. Specifically, place the side support members 246 on the opposite sides of the base 23 in the installation grooves 216 of the two frames 21, and connect the connecting member 255 to the frames 21. At this time, the front faces 211 of the two frames 21, the front faces of the two side support members 246, the front faces of the first middle support member 242, and the front faces of the second middle support member 244 are coplanar; the first abutting surface 2852 of each abutting top portion 285 abuts against the first positioning surface 2822 of the corresponding positioning member 282, so that the two frames 21 remain flat. The bendable area 51 of the flexible screen 50 is attached to the front of the two side support members 246 of the folding device 22, the front of the first middle support member 242, and the front of the second middle support member 244, and the two non-bending areas 53 are attached to the front 211 of the two frames 21. Due to the friction resistance between the abutting member 291 of the abutting assembly 29 and the connecting rod member 261, the friction resistance between the abutting top 285 and the positioning member 282, and the friction resistance between the rotating member 250 and the base 23 and the abutting member 220, the bendable area 51 of the flexible screen 50 is positioned at any bending angle, so that the two frames 21 can be freely adjusted in the flattened state, the fully folded state and the intermediate folded state, that is, the electronic device 100 can be positioned in the flattened state, the fully folded state and any intermediate folded state.

[0084] Please also read Figure 1 and Figure 20-Figure 27When the electronic device 100 is bent, a bending force is applied to at least one of the two frames 21 of the electronic device 100, so that the connecting member 255 connected to the two frames 21 drives the rotating member 250 to rotate relative to the base 23 around the first rotation axis L1 and rotate in a direction of approaching each other, the side support member 246 rotates relative to the connecting member 255, and the side support member 246 is rotated and slidably connected through the cooperation of the adjustment shaft 2611 and the adjustment groove 2460, and the two connecting members 255 respectively drive the two connecting rod members 261 to rotate relative to the base 23 and approach each other, and the first abutting spiral surface 2617a and the second abutting spiral surface 2617b of the connecting rod member 261 respectively slide against the first spiral surface 27 1 and the second helical surface 273, so that the linkage member 27 slides in the first direction along the axial direction of the connecting shaft 260, and the two connecting rod members 261 are respectively rotated synchronously around a pair of connecting shafts 260 and approach each other through the linkage member 27. At the same time, the abutting top 285 on the linkage member 27 slides relative to the corresponding positioning member 282, specifically, from the sliding between the first abutting top surface 2852 of the abutting top surface 285 and the first positioning surface 2822 of the positioning member 282, through the sliding between the third abutting top surface 2856 and the third positioning surface 2826, until the second abutting top surface 2854 and the second positioning surface 2824 are in contact with each other, so as to realize the synchronous folding of the folding device 22, and the bendable area 51 of the flexible screen 50 is bent along with the folding device 22. During the bending process of the electronic device 100, the connecting member 255 and the side support member 246 rotate through the cooperation of the first arc rail 2552 and the arc groove 2466, and the adjustment shaft 2611 of the rotating member 250 slides and rotates in the adjustment groove 2460 of the side support member 246; the side support members 246 on the opposite sides of the base 23 are brought closer to each other until the adjustment shaft 2611 is limited to the second positioning section 2464, and the cam 2616 abuts against the abutting cam 2910 of the abutting member 291, and the second abutting surface 2854 is positioned on the second positioning surface 2824 to prevent the connecting rod member 261 from rotating. The linkage member 27 is limited to slide along the connecting shaft 260 by the connecting rod member 261, and the front sides of the two side support members 246 are surrounded by a cross-section in the shape of a water drop; the bendable area 51 of the flexible screen 50 is bent along the folding device 22 until the bendable area 51 is bent into a water drop shape, thereby realizing the folding of the electronic device 100.

[0085] When the electronic device 100 is flattened, an unfolding force is applied to at least one of the two frames 21 of the electronic device 100, so that the connecting member 255 connected to the two frames 21 drives the rotating member 250 to rotate relative to the base 23 around the first rotation axis L1 and rotate in a direction away from each other, the side support member 246 rotates relative to the connecting member 255, and the side support member 246 is rotated and slidably connected through the cooperation of the adjustment shaft 2611 and the adjustment groove 2460, and the two connecting members 255 respectively drive the two connecting rod members 261 to rotate relative to the base 23 and move away from each other, and the first abutting spiral surface 2617a and the second abutting spiral surface 2617b of the connecting rod member 261 respectively slide against the first spiral surface 27 1 and the second helical surface 273, so that the linkage member 27 slides in the second direction along the axial direction of the connecting shaft 260, and the two connecting rod members 261 are respectively rotated synchronously around a pair of connecting shafts 260 and move away from each other through the linkage member 27. At the same time, the abutting top 285 on the linkage member 27 slides relative to the corresponding positioning member 282, specifically, from the sliding between the second abutting top surface 2854 of the abutting top 285 and the second positioning surface 2824 of the positioning member 282, through the sliding between the third abutting top surface 2856 and the third positioning surface 2826, until the first abutting top surface 2852 and the first positioning surface 2822 are fitted with each other, so as to realize the synchronous flattening of the folding device 22, and the bendable area 51 of the flexible screen 50 is flattened along with the folding device 22. During the flattening process of the electronic device 100, the connecting member 255 and the side support member 246 rotate through the cooperation of the first arc track 2552 and the arc groove 2466, and the adjustment shaft 2611 of the rotating member 250 slides and rotates in the adjustment groove 2460 of the side support member 246; the side support members 246 on the opposite sides of the base 23 move away from each other until the adjustment shaft 2611 is limited to the first positioning section 2463 and the cam 2616 abuts against the abutting member 291. The cam 2910 is pressed against the top surface 2852, and the first pressing surface 2852 is positioned on the first positioning surface 2822 to prevent the connecting rod 261 from rotating. The linkage member 261 is used to limit the linkage member 27 from sliding along the connecting shaft 260, so that the side support members 246 on the opposite sides of the base 23 are unfolded to each other until the two side support members 246 are flattened, and the bendable area 51 of the flexible screen 50 is unfolded along with the folding device 22 until the flexible screen 50 is completely flattened, thereby realizing the flattening of the electronic device 100.

[0086] The folding device 22 of the electronic device 100 of the present invention can realize the synchronous folding or synchronous unfolding of the two side support members 246 through the linkage member 27 set between the two connecting rod members 261, and the operation is convenient; the folding device 22 has fewer components, a simple structure, and a low manufacturing cost, which reduces the internal space of the folding shell 20 occupied by the folding device 22, which is beneficial to the layout of other components such as the motherboard or battery. Secondly, the friction resistance between the first abutting surface 2852 of the abutting top 285 and the first positioning surface 2822 of the positioning member 282, the friction resistance between the third abutting surface 2856 and the third positioning surface 2826, the friction resistance between the second abutting surface 2854 and the second positioning surface 2824, the friction resistance between the cam 2616 of the connecting rod 261 and the abutting cam 2910, and the friction resistance between the rotating member 250 and the base 23 and the abutting member 220 make the bendable area 51 of the flexible screen 50 positioned at any bending angle, so that the two frames 21 can be freely adjusted in the flattened state, the fully folded state and the intermediate folded state, that is, the electronic device 100 can be positioned in the flattened state, the folded state and any intermediate folded state, so that the two frames 21 of the electronic device 100 have a hovering function of 0 to 180 degrees, and the hovering angle range is large.

[0087] The above is an implementation of the embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the embodiment of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A folding device, characterized in that: The folding device comprises: Pedestal; A pair of connecting shafts are respectively arranged on opposite sides of the base; Connecting rods, wherein one of the connecting rods is rotatably connected to one of the connecting shafts, and the other connecting rod is rotatably connected to the other connecting shaft; A linkage member, wherein the linkage member is disposed between the two connecting rod members and connected to a pair of connecting shafts, the linkage member can slide relative to the base along the axial direction of the connecting shaft, and the two connecting rod members are respectively connected to the linkage member through a helical surface fit; and A positioning mechanism, the positioning mechanism includes a positioning component and a resisting top portion that can slidably resist the positioning component, the positioning component is arranged at one of the base and the linkage member, and the resisting top portion is arranged at the other of the base and the linkage member; when one of the connecting rod members or a pair of the connecting rod members rotates around the corresponding connecting shaft, the linkage member slides relative to the base along the axial direction of the connecting shaft, and the two connecting rod members rotate synchronously in opposite directions relative to the base, so that the resisting top portion slides relative to the positioning component and has friction resistance, and the friction resistance is used for positioning the connecting rod member relative to the base.

2. The folding device according to claim 1, characterized in that: The positioning assembly includes a positioning member, and the positioning member includes a first positioning surface and a second positioning surface, and the first positioning surface and the second positioning surface are arranged on opposite sides of the positioning member along the sliding direction of the linkage member; the abutting top includes a first abutting surface and a second abutting surface located on opposite sides thereof, and when a pair of the connecting rod members are in a flattened state relative to the base, the first positioning surface is affixed to the first abutting surface; when a pair of the connecting rod members are in a fully folded state relative to the base, the second positioning surface is affixed to the second abutting surface.

3. The folding device according to claim 2, characterized in that: The positioning member also includes a third positioning surface, which is connected between the first positioning surface and the second positioning surface; the abutting top portion also includes a third abutting surface, which is connected between the first abutting surface and the second abutting surface; when a pair of the connecting rod members are in a middle folded state relative to the base, the third positioning surface is attached to the third abutting surface.

4. The folding device according to claim 3, characterized in that: A first damping mechanism is disposed on at least one of the first positioning surface, the second positioning surface and the third positioning surface; or / and a second damping mechanism is disposed on at least one of the first abutting surface, the second abutting surface and the third abutting surface.

5. The folding device according to claim 2, characterized in that: The positioning assembly also includes a push member, the positioning member is connected to the push member, and the push member is used to push the positioning member against the abutting top portion.

6. The folding device according to claim 5, characterized in that: The base includes a seat body and a back cover, the side of the push member facing away from the positioning member is connected to the back cover, the seat body is provided with a through groove facing the positioning member, and the positioning member is accommodated in the through groove; the top portion is provided on the side of the linkage member facing the positioning assembly, and the top portion can be slidably accommodated in the through groove along with the linkage member.

7. The folding device according to claim 3, characterized in that: The third positioning surface is parallel to the plane where the axes of the pair of connecting shafts are located, and the first positioning surface and the second positioning surface are both inclined relative to the third positioning surface; the third abutting surface is parallel to the third positioning surface, the first abutting surface is parallel to the first positioning surface, and the second abutting surface is parallel to the second positioning surface.

8. The folding device according to claim 3, characterized in that: The folding device also includes a supporting member and an elastic member. The supporting member is slidably mounted on a pair of connecting shafts. The supporting member and the connecting rod member are matched via a cam. The elastic member is used to push the supporting member and the connecting rod member against each other. When the connecting rod member rotates relative to the supporting member, there is friction resistance between the connecting rod member and the supporting member.

9. A foldable housing, characterized in that: The folding shell comprises the folding device according to any one of claims 1 to 8 and at least two frames, the folding device is located between two adjacent frames, and opposite sides of the folding device are respectively connected to the two adjacent frames.

10. An electronic device, characterized in that: The electronic device comprises a flexible screen and the folding housing as claimed in claim 9, wherein the flexible screen is connected to the folding housing.

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