Rotating shaft device and electronic device

Abstract

The application provides a rotating shaft device, which comprises a supporting mechanism and a rotating assembly. The supporting mechanism comprises two side supports. The rotating assembly comprises a positioning seat and rotating mechanisms arranged on opposite sides of the positioning seat. The rotating mechanisms comprise a first rotating member, a second rotating member and a connecting member. The opposite ends of the first rotating member and the second rotating member are rotatably connected to the positioning seat and the connecting member respectively. The first rotating axis between the first rotating member and the connecting member is parallel to and spaced from the second rotating axis between the second rotating member and the connecting member. The side supports are rotatably connected to the connecting member. The first rotating member and / or the second rotating member is slidably and rotatably connected to the side supports. The connecting member rotates relative to the positioning seat to rotate the first rotating member and the second rotating member. The rotation of the first rotating member and the second rotating member enables the two side supports to be folded or unfolded relative to each other. The application also provides an electronic device provided with the rotating shaft device.

Description

Technical Field

[0001] This invention relates to the field of flexible screen support, and more particularly to a rotating shaft device for supporting a flexible screen and an electronic device equipped with the rotating shaft device. Background Technology

[0002] With the development of display devices, flexible foldable displays have emerged. Currently, the folding solutions for flexible foldable displays include inward folding and outward folding, and foldable screens are becoming increasingly popular. Foldable screens in related technologies generally use hinge mechanisms for support; however, most current hinge structures are complex, have a large overall width, and occupy a lot of space, which is not conducive to miniaturization. Summary of the Invention

[0003] This application provides a rotating shaft device and an electronic device equipped with the rotating shaft device.

[0004] This application provides a rotating shaft device, which includes a support mechanism and a rotating assembly. The support mechanism includes two side support members. The rotating assembly includes a positioning seat and rotating mechanisms disposed on opposite sides of the positioning seat. Each rotating mechanism includes a first rotating member, a second rotating member, and a connecting member. One end of the first rotating member is rotatably connected to the positioning seat, and the other end of the first rotating member away from the positioning seat is rotatably connected to the connecting member. One end of the second rotating member is rotatably connected to the positioning seat, and the other end of the second rotating member away from the positioning seat is rotatably connected to the connecting member. A first rotation axis centerline between the first rotating member and the connecting member is parallel to and spaced apart from a second rotation axis between the second rotating member and the connecting member. A center line; the side support is rotatably connected to the connector, and the first rotating member and / or the second rotating member is movably connected to the side support; when the two connectors approach each other, the first rotating member and the second rotating member rotate relative to the positioning seat and the connector and approach each other, and the first rotating member and the second rotating member slide and rotate relative to the side support, so that the two side support members fold together; when the two connectors move away from each other, the first rotating member and the second rotating member rotate relative to the positioning seat and the connector and move away from each other, and the first rotating member and the second rotating member slide and rotate relative to the side support, so that the two side support members unfold together.

[0005] In some embodiments, the first rotation axis between the first rotating member and the connecting member is further away from the positioning seat than the second rotation axis between the second rotating member and the connecting member.

[0006] In some embodiments, the connector includes a connecting plate, and the first rotating member and the second rotating member are rotatably connected to the front side of the connecting plate, wherein the first rotation axis is further away from the connecting plate than the second rotation axis.

[0007] In some embodiments, the first distance between the rotation axis between the first rotating member and the positioning seat and the first rotation axis is greater than the second distance between the second rotating member and the positioning seat and the second rotation axis. During the mutual folding process of the two side supports, both the first distance and the second distance gradually increase, and during the mutual flattening process of the two side supports, both the first distance and the second distance gradually decrease.

[0008] In some embodiments, the first rotating member and the side support member are connected by a first limiting groove and a first limiting part, wherein the first limiting groove is provided in one of the first rotating member and the side support member, and the first limiting part is provided in the other of the first rotating member and the side support member.

[0009] In some embodiments, the second rotating member and the side support member are connected by a second limiting groove and a second limiting part, wherein the second limiting groove is provided in one of the second rotating member and the side support member, and the second limiting part is provided in the other of the second rotating member and the side support member.

[0010] In some embodiments, the first rotating member and the side support member are connected by a first limiting groove and a first limiting portion, wherein the first limiting groove is provided in one of the first rotating member and the side support member, and the first limiting portion is provided in the other of the first rotating member and the side support member; and the second rotating member and the side support member are connected by a second limiting groove and a second limiting portion, wherein the second limiting groove is provided in one of the second rotating member and the side support member, and the second limiting portion is provided in the other of the second rotating member and the side support member.

[0011] In some embodiments, both the first limiting groove and the second limiting groove include a first limiting segment and a second limiting segment located at their opposite ends. The first limiting segment is further away from the positioning seat than the second limiting segment. The first limiting portion is a first limiting post passing through the first limiting groove, and the second limiting portion is a second limiting post passing through the second limiting groove. When the two side supports are in a fully folded state, the first limiting post and the second limiting post are respectively positioned at the second limiting segment of the first limiting groove and the second limiting segment of the second limiting groove. When the two side supports are in a flattened state, the first limiting post and the second limiting post are respectively positioned at the first limiting segment of the second limiting groove and the first limiting segment of the second limiting groove.

[0012] In some embodiments, the first limiting post is located at the end of the first rotating member away from the positioning seat, and the axis of the first limiting post is parallel to the first rotation axis; the second limiting post is located at the end of the second rotating member away from the positioning seat, and the axis of the second limiting post is parallel to the second rotation axis.

[0013] In some embodiments, the first rotating member and the connecting member are connected by a first connecting shaft and a first connecting hole, wherein the first connecting shaft is disposed in one of the first rotating member and the connecting member, and the first connecting hole is disposed in the other of the first rotating member and the connecting member; the second rotating member and the connecting member are connected by a second connecting shaft and a second connecting hole, wherein the second connecting shaft is disposed in one of the second rotating member and the connecting member, and the second connecting hole is disposed in the other of the second rotating member and the connecting member.

[0014] In some embodiments, the side of the side support member away from the positioning seat is connected to the connector through a first arc groove and a first arc rail. The axis of the first arc groove is collinear with the axis of rotation between the side support member and the connector. The first arc groove is provided in one of the side support member and the connector, and the first arc rail is provided in the other of the side support member and the connector.

[0015] In some embodiments, the first rotating member and the positioning seat are connected by a second arc groove and a second arc rail, the axis of the second arc groove is collinear with the axis of rotation between the first rotating member and the positioning seat; the second arc groove is provided in one of the positioning seat and the first rotating member, and the second arc rail is provided in the other of the positioning seat and the first rotating member.

[0016] In some embodiments, the second rotating member and the positioning seat are connected by a third arc groove and a third arc rail, wherein the axis of the third arc groove is collinear with the axis of rotation between the second rotating member and the positioning seat; the third arc groove is provided in one of the positioning seat and the second rotating member, and the third arc rail is provided in the other of the positioning seat and the second rotating member.

[0017] In some embodiments, the rotating shaft device further includes a linkage mechanism, which includes two connecting shafts, two linkage members respectively connected to the two connecting shafts, and a gear assembly disposed between the two linkage members. The two connecting shafts are respectively connected to one end of the positioning seat, and each linkage member has a gear at its end away from the connecting member that meshes with the gear assembly.

[0018] In some embodiments, the end of the linkage member away from the positioning seat is connected to the connecting member through a guide groove and a guide portion. The guide groove is provided in one of the linkage member and the connecting member, and the guide portion is provided in the other of the linkage member and the connecting member.

[0019] In some embodiments, the guide groove includes a first positioning section and a second positioning section located at opposite ends thereof. The first positioning section is further away from the connecting shaft than the second positioning section. The guide part is a guide post passing through the guide groove. When the two side supports are in a fully folded state, the guide post is positioned in the second positioning section. When the two side supports are in a flattened state, the guide post is positioned in the first positioning section.

[0020] In some embodiments, the rotating shaft device further includes a limiting mechanism, which includes a pushing member, a holding member, and an elastic member disposed on the linkage member. The elastic member provides elastic force for mutual abutment between the holding member and the pushing member. The pushing member includes a first cam, and the holding member includes a second cam. The first cam and the second cam are rotatably abutting each other. The elastic member elastically pushes the holding member. The pushing member rotates relative to the holding member. The elastic member is elastically compressed and undergoes elastic deformation. The frictional resistance between the first cam and the second cam positions the linkage member relative to the linkage seat, so as to realize that the side support member is positioned at a specific angle relative to the positioning seat.

[0021] In some embodiments, the abutment and the elastic member are sleeved on the rotating shaft, and the limiting mechanism further includes a positioning member disposed at the end of the rotating shaft away from the abutment, and the end of the elastic member away from the abutment elastically abuts against the positioning member.

[0022] This application also provides an electronic device, which includes a pivot device, a flexible screen, and two frames. Connectors on opposite sides of the pivot device are respectively connected to the two frames, and two side supports of the pivot device support the back of the flexible screen. When the two connectors are close together, the first and second rotating members of the pivot device rotate relative to the positioning seat and the connectors, and slide and rotate relative to the side supports, so that the two side supports fold together to fold the flexible screen. When the two connectors are far apart, the first and second rotating members rotate relative to the positioning seat and the connectors and move away from each other, and slide and rotate relative to the side supports, so that the two side supports unfold to unfold the flexible screen.

[0023] In this invention, the first rotation axis between the first rotating member and the connecting member of the rotating shaft device is parallel to and spaced apart from the second rotation axis between the second rotating member and the connecting member. The first rotating member and the second rotating member are slidably and rotatably connected to the side support member, and the side support member is rotatably connected to the connecting member. This makes the rotating shaft device compact in structure and smaller in overall width, thereby reducing the internal space occupied by the rotating shaft device in the folding shell. This is not only beneficial for the layout of other components such as the motherboard or battery, but also beneficial for miniaturization. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a three-dimensional structural schematic diagram of an electronic device in one embodiment of this application;

[0026] Figure 2 yes Figure 1 An exploded view of the folding housing and flexible screen of the electronic device.

[0027] Figure 3 yes Figure 2 An exploded view of the three-dimensional structure of the folded shell in the diagram;

[0028] Figure 4 yes Figure 3 A three-dimensional structural diagram of the folded shell from another perspective;

[0029] Figure 5 yes Figure 3 Enlarged three-dimensional structure diagram of the rotating shaft device in the image;

[0030] Figure 6 yes Figure 5 A three-dimensional structural diagram of the rotating shaft device from another perspective;

[0031] Figure 7 yes Figure 5 An exploded three-dimensional structural diagram of the rotating shaft device in the diagram;

[0032] Figure 8 yes Figure 7 A three-dimensional structural diagram of the rotating shaft device from another perspective;

[0033] Figure 9 yes Figure 7 An exploded three-dimensional structural diagram of the rotating component of the rotating shaft device in the diagram;

[0034] Figure 10 yes Figure 9 A three-dimensional structural diagram of the rotating component from another perspective;

[0035] Figure 11 yes Figure 7 A three-dimensional exploded view of the linkage mechanism and the limiting mechanism in the diagram;

[0036] Figure 12 yes Figure 11 A three-dimensional structural diagram of the linkage mechanism and the limiting mechanism from another perspective;

[0037] Figure 13 yes Figure 5 A three-dimensional structural diagram of the rotating shaft device from another perspective;

[0038] Figure 14 yes Figure 13 A three-dimensional sectional view of the rotating shaft device in the middle;

[0039] Figures 15-19 yes Figure 1 Cross-sectional views of different parts of the electronic equipment in the document;

[0040] Figure 20 yes Figure 1 A three-dimensional structural diagram of the electronic device in a fully bent state;

[0041] Figure 21 yes Figure 20 Enlarged 3D view of the rotating shaft device and part of the flexible screen;

[0042] Figures 22-26 yes Figure 20 Cross-sectional views of different parts of the rotating shaft device;

[0043] Figure 27This is an exploded perspective view of the rotating shaft device in another embodiment of this application;

[0044] Figure 28 yes Figure 27 A three-dimensional structural diagram of the rotating shaft device from another perspective;

[0045] Figure 29 This is an exploded perspective view of the rotating shaft device in another embodiment of this application;

[0046] Figure 30 yes Figure 29 A three-dimensional structural diagram of the rotating shaft device from another perspective. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] Furthermore, the following descriptions of various embodiments are based on the accompanying illustrations and are used to illustrate specific embodiments that can be implemented in this application. Directional terms used in this application, such as "up," "down," "front," "back," "left," "right," "inner," "outer," and "side," are merely for reference to the accompanying illustrations. Therefore, the directional terms used are for better and clearer explanation and understanding of this application, and are not intended to indicate or imply that the referred device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0049] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "connected," "linked," and "set on" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0050] Please refer to the following: Figures 1 to 8In one embodiment of the present invention, the electronic device 100 includes a foldable housing 20 and a flexible screen 30 disposed on the foldable housing 20. The flexible screen 30 can be a flexible display screen, a flexible touch screen, a flexible touch display screen, or other flexible components with corresponding functions, or a flexible component fixedly attached to a flexible support plate, such as a flexible display screen or a flexible touch screen attached to a flexible steel plate. The flexible screen 30 folds or unfolds with the foldable housing 20. The foldable housing 20 includes two frames 21 and a pivot device 22 connecting the two frames 21. The two frames 21 can fold or unfold with the pivot device 22. The flexible screen 30 includes a foldable area 31 corresponding to the pivot device 22, and two non-foldable areas 33 connected to opposite sides of the foldable area 31. The two non-foldable areas 33 of the flexible screen 30 can be fixed to the front of the two frames 21 respectively, and the foldable area 31 is attached to the front of the pivot device 22. The foldable area 31 of the flexible screen 30 can fold or unfold with the pivot device 22. The rotating shaft device 22 includes a support mechanism 23, a rotating assembly 25, a linkage assembly 26, and a limiting mechanism 27. The linkage assembly 26 is connected to the rotating assembly 25, and the limiting mechanism 27 is connected to the linkage assembly 26. The support mechanism 23 includes two side support members 233 located on opposite sides of the front of the rotating assembly 25. The two side support members 233 can be folded or flattened. The rotating assembly 25 includes a positioning seat 251 and rotating mechanisms 253 located on opposite sides of the positioning seat 251. The two side support members 233 are located on opposite sides of the positioning seat 251 and are respectively connected to the two rotating mechanisms 253. The two rotating mechanisms 253 can be symmetrically or asymmetrically arranged along the centerline of the positioning seat 251. In this embodiment, the two rotating mechanisms 253 are symmetrically arranged along the centerline of the positioning seat 251. When the two side supports 233 are flattened, their front surfaces are coplanar with the front surface of the positioning seat 251; the flexible screen 30 is attached to the front surfaces of the positioning seat 251 and the side supports 233. The rotating mechanism 253 includes a first rotating member 254, a second rotating member 255, and a connecting member 256. One end of the first rotating member 254 is rotatably connected to the positioning seat 251, and the other end of the first rotating member 254 away from the positioning seat 251 is rotatably connected to the connecting member 256; one end of the second rotating member 255 is rotatably connected to the positioning seat 251, and the other end of the second rotating member 255 away from the positioning seat 251 is rotatably connected to the connecting member 256. The first rotation axis C1 between the first rotating member 254 and the connecting member 256 is parallel and spaced apart from the second rotation axis C2 between the second rotating member 255 and the connecting member 256. That is, the first rotation axis C1 and the second rotation axis C2 are misaligned and do not coincide.The linkage assembly 26 includes a linkage seat 261 and a linkage mechanism 263 disposed on the linkage seat 261. The linkage mechanism 263 includes linkage members 264 rotatably disposed on opposite sides of the linkage seat 261. The end of the linkage member 264 away from the linkage seat 261 is slidably and rotatably connected to the connecting member 256. The side support member 233 is rotatably connected to the corresponding connecting member 256. The side support member 233 is slidably and rotatably connected to the first rotating member 254 and / or the second rotating member 255. In this embodiment, the first rotating member 254 is slidably and rotatably connected to the side support member 233. The rotation mechanism 253 rotates relative to the positioning seat 251, causing the connecting member 256 to rotate relative to the positioning seat 251, thereby driving the first rotating member 254, the second rotating member 255, and the linkage member 264 to rotate. The rotation of the first rotating member 254, the second rotating member 255, and the linkage member 264 causes the two side support members 233 to synchronously fold or unfold relative to the positioning seat 251. Specifically, when the two connectors 256 rotate relative to the positioning seat 251 and move closer to each other, the first rotating member 254 and the second rotating member 255 rotate relative to the positioning seat 251 and the connector 256 and move closer to each other. The first rotating member 254 and the second rotating member 255 slide and rotate relative to the side support member 233, so that the two side support members 233 fold together to drive the foldable area 31 of the flexible screen 30 to bend, thereby realizing the folding of the flexible screen 30. When the two connectors 256 rotate relative to the positioning seat 251 and move away from each other, the first rotating member 254 and the second rotating member 255 rotate relative to the positioning seat 251 and the connector 256 and move away from each other. The first rotating member 254 and the second rotating member 255 slide and rotate relative to the side support member 233, so that the two side support members 233 unfold together to drive the foldable area 31 of the flexible screen 30 to unfold, thereby realizing the flattening of the flexible screen 30.

[0051] In some embodiments, the support mechanism 23 further includes a central support member disposed between the two side support members 233. When the support mechanism 23 is in a flattened state, the front surfaces of the two side support members 233 and the central support member are coplanar, and the foldable area 31 of the flexible screen 30 is attached to the front surfaces of the central support member and the side support members 233. When the support mechanism 23 is in a folded state, the front surfaces of the two side support members and the central support member form a space with a teardrop or U-shaped cross-section.

[0052] The two frames 21 of the electronic device 100 are respectively connected to the two connectors 256 of the rotating shaft device 22. The frames 21 drive the first rotating member 254 and the second rotating member 255 to rotate relative to the positioning seat 251 through the connectors 256. At the same time, the connectors 256 drive the linkage member 264 to rotate relative to the linkage seat 261, so that the two side support members 233 can be folded or unfolded synchronously with the rotating mechanism 253 and the linkage mechanism 263. The flexible screen 30 is folded or flattened with the support mechanism 23. The foldable area 31 can be bent into a U-shape, a teardrop shape or other shapes. In this embodiment, the foldable area 31 can be bent into a teardrop shape.

[0053] In this embodiment, the front side refers to the side facing the same direction as the light-emitting surface of the flexible screen 30, and the back side refers to the side facing away from the light-emitting surface of the flexible screen 30. The electronic device 100 is, for example, but not limited to, mobile phones, tablets, monitors, LCD panels, OLED panels, televisions, smartwatches, VR headsets, automotive displays, and any other products and components with display functions. In the description of this embodiment, "connection" includes both direct and indirect connections. For example, a connection between A and B includes a direct connection between A and B or a connection through a third element C or more other elements. Connections also include integrated connections and non-integrated connections. An integrated connection means that A and B are formed and connected as a single unit, while a non-integrated connection means that A and B are not formed and connected as a single unit.

[0054] The rotating shaft device 22 of the electronic device 100 of the present invention includes a support mechanism 23, a rotating assembly 25, and a linkage assembly 26. The first rotating member 254 of the rotating assembly 25 is rotatably connected at opposite ends to the positioning seat 251 and the connecting member 256, respectively. The second rotating member 255 is rotatably connected at opposite ends to the positioning seat 251 and the connecting member 256, respectively. The first rotating member 254 is slidably and rotatably connected to the side support member 233. The end of the linkage member 264 away from the linkage seat 261 is slidably and rotatably connected to the side support member 233. During the process of the two frames 21 moving closer or further apart, the connecting member 256 drives the first rotating member 254 and the second rotating member 255 to rotate relative to the positioning seat 251. The connecting member 256 also drives the linkage members 264 on opposite sides of the linkage seat 261 to rotate synchronously relative to the linkage seat 261, thereby causing the two side support members 233 to fold or unfold synchronously, thus realizing the folding or flattening of the flexible screen 30. First, the first rotation axis C1 and the second rotation axis C2 are parallel but misaligned, meaning they are parallel but not coincident. Furthermore, the first rotating component 254 is slidably and rotatably connected to the side support component 233, and the linkage component 264 is slidably and rotatably connected to the connecting component 256. This makes the rotating shaft device 22 compact and its overall width smaller, thus reducing the internal space occupied by the rotating shaft device 22 in the folding housing 20. This not only facilitates the layout of other components such as the motherboard or battery but also promotes miniaturization. Second, the rotating shaft device 22 can achieve synchronous folding or flattening through the support mechanism 23, the rotating component 25, and the linkage component 26. Compared to the prior art that uses a hinge mechanism to support the flexible screen, the rotating shaft device 22 of this application has a simpler structure, lower manufacturing cost, higher reliability of connections between components, and improved overall strength.

[0055] The rotating shaft device 22 in this embodiment includes a rotating component 25, a linkage component 26, and a limiting mechanism 27; the rotating component 25, the linkage component 26, and the limiting mechanism 27 constitute an integral structure, which is disposed on the back of the support mechanism 23.

[0056] In some embodiments, the rotating shaft device 22 may also include two rotating components 25, two linkage components 26 and two limiting mechanisms 27. Each rotating component 25, one of the linkage components 26 and one of the limiting mechanisms 27 constitute an integral structure. That is, the two rotating components 25, the two linkage components 26 and the two limiting mechanisms 27 constitute two integral structures. The two integral structures are respectively disposed at opposite ends of the back of the support mechanism 23.

[0057] In some embodiments, the rotating shaft device 22 may also include only three or more rotating components 25, three or more linkage components 26, and three or more limiting mechanisms 27. Each rotating component 25, one of the linkage components 26, and one of the limiting mechanisms 27 constitute an integral structure. That is, three or more rotating components 25, three or more linkage components 26, and three or more limiting mechanisms 27 constitute three or more integral structures. The three or more integral structures are respectively disposed on the back of the support mechanism 23 and are spaced apart along the length direction of the support mechanism 23.

[0058] like Figure 7 As shown, the first rotation axis C1 between the first rotating member 254 and the connecting member 256 on the same side of the positioning seat 251 is farther away from the positioning seat 251 than the second rotation axis C2 between the second rotating member 255 and the connecting member 256; that is, the second rotation axis C2 is closer to the positioning seat 251 than the first rotation axis C1. The first rotation axis C1 and the second rotation axis C2 are parallel and spaced apart in the first direction, which is beneficial to a more compact connection between the first rotating member 254, the second rotating member 255, the connecting member 256 and the positioning seat 251.

[0059] like Figure 7 As shown, the connector 256 includes a connecting plate 2560. A first rotating member 254 and a second rotating member 255 are rotatably connected to the front side of the connecting plate 2560. The first rotation axis C1 is further away from the connecting plate 2560 than the second rotation axis C2. The first rotation axis C1 and the second rotation axis C2 are parallel and spaced apart in a second direction, which facilitates a more compact connection between the first rotating member 254, the second rotating member 255, the connector 256, and the positioning seat 251. The first direction is perpendicular to the second direction, and the first direction is parallel to the width direction of the rotating device 22, while the second direction is parallel to the thickness direction of the rotating device 22.

[0060] like Figures 1 to 4 As shown, the connecting parts 256 on both sides of the rotating shaft device 22 are fixedly connected to the two frames 21 respectively. When one frame 21 is folded or unfolded relative to the other frame 21, it can drive the corresponding rotating mechanism 253 to rotate relative to the positioning seat 251. The rotating mechanism 253 drives the two side support members 233 to rotate and slide synchronously relative to the positioning seat 251 through the linkage component 26 until the two side support members 233 are folded into a teardrop shape or unfolded into a horizontal shape. The foldable area 31 of the flexible screen 30 is folded into a teardrop shape or unfolded into a horizontal shape along with the foldable area 31.

[0061] like Figures 2-4As shown, the frame 21 includes a front face 211, a back face 213, two opposite sides 214, and two end faces 215. A hinge device 22 connects the two adjacent end faces 215 of the two frames 21. The foldable area 31 of the flexible screen 30 is attached to the front face of the hinge device 22, and the non-foldable area 33 of the flexible screen 30 is connected to the front face 211 of the frame 21. Each frame 21 has a receiving groove 216 on its end face 215 facing the hinge device 22. The receiving groove 216 passes through the front face 211 of the frame 21, and its opposite ends extend to the opposite sides 214 of the frame 21. The opposite sides of the hinge device 22 are respectively accommodated in the receiving grooves 216 of the two frames 21, and each connector 256 is fixedly connected to the corresponding frame 21. The back face 213 of the frame 21 has several receiving spaces (not shown in the figure), which are used to install electronic devices such as circuit boards and batteries.

[0062] Please refer to the following: Figure 5 and Figure 8The side support member 233 is a rectangular plate. The side of the side support member 233 away from the positioning seat 251 is connected to the connector 256 through the first arc groove 2334 and the first arc rail 2562. The axis of the first arc groove 2334 is collinear with the axis of rotation between the side support member 233 and the connector 256. The first arc groove 2334 is provided in one of the side support member 233 and the connector 256, and the first arc rail 2562 is provided in the other of the connector 256 and the side support member 233. In this embodiment, the side support member 233 includes a rectangular side support plate 2330. The side support plate 2330 includes a front side 2331 and a back side 2332 facing away from the front side 2331. The back side 2332 of the side support member 233 is provided with a guide slider 2333. The guide slider 2333 is provided with a first arc groove 2334. The connector 256 is provided with a first arc rail 2562 that can be slidably inserted into the first arc groove 2334. The connector 256 and the side support member 233 rotate relative to each other along the first arc groove 2334. Specifically, a guide slider 2333 protrudes from the back surface 2332 of the side support member 233, away from the positioning seat 251. The guide slider 2333 is an arc-shaped block, and a first arc groove 2334 is formed on the side surface of the guide slider 2333. One end of the first arc groove 2334 penetrates the surface of the guide slider 2333 away from the positioning seat 251, and the other end of the first arc groove 2334 extends to the back surface 2332 of the side support plate 2330. The first arc groove 2334 bends away from the back surface 2332. Specifically, the middle part of the first arc groove 2334 bends away from the back surface 2332. The side support 233 is provided with a guide slider 2333 at at least one end of the connector 256. The guide slider 2333 is provided with a first arc groove 2334 on the side facing the connector 256. The connector 256 is provided with a first arc rail 2562 on the end face facing the guide slider 2333. The first arc rail 2562 is slidably accommodated in the first arc groove 2334.

[0063] In some embodiments, the side support member 233 is provided with guide sliders 2333 at opposite ends of the connector 256, and the two sides facing each other of the two guide sliders 2333 are provided with first arc grooves 2334. The axis lines of the two first arc grooves 2334 are collinear, and one end of the first arc groove 2334 passes through the guide slider 2333 away from the surface of the positioning seat 251. The two opposite ends of the connector 256 are respectively provided with first arc rails 2562, and the two first arc rails 2562 are slidably accommodated in the two first arc grooves 2334.

[0064] In some embodiments, the side support member 233 is provided with guide sliders 2333 at opposite ends of the connector 256, and the two sides facing the two guide sliders 2333 are provided with first arc rails 2562, and the axis lines of the two first arc rails 2562 are collinear; the two opposite ends of the connector 256 are provided with first arc grooves 2334, and the two first arc rails 2562 are slidably accommodated in the two first arc grooves 2334.

[0065] In some embodiments, the connector 256 is provided with two or more first arc rails 2562, the axis lines of the two or more first arc rails 2562 are collinear, and the side support 233 is provided with two or more first arc grooves 2334 respectively corresponding to the two or more first arc rails 2562, and the two or more first arc rails 2562 are rotatably accommodated in the two or more first arc grooves 2334 respectively.

[0066] In some embodiments, the back surface 2332 of the side support member 233 is provided with two guide sliders 2333. The two opposite sides of the two guide sliders 2333 are respectively provided with first arc grooves 2334. The axis lines of the two first arc grooves 2334 are collinear. One end of the first arc groove 2334 penetrates the surface of the guide slider 2333 away from the side support plate 2330. The first arc groove 2334 is bent towards the side away from the back surface 2332. The connector 256 is provided with two first arc rails 2562 corresponding to the two first arc grooves 2334 respectively. The two first arc rails 2562 are slidably accommodated in the two first arc grooves 2334 respectively.

[0067] In some embodiments, one of the opposite sides of one guide slider 2333 is provided with a first arc groove 2334, and one of the opposite sides of the other guide slider 2333 is provided with a first arc groove 2334. The axis lines of the two first arc grooves 2334 are collinear. The connector 256 is provided with two first arc rails 2562 corresponding to the two first arc grooves 2334 respectively. The two first arcs 2562 are slidably accommodated in the two first arc grooves 2334 respectively.

[0068] The first rotating member 254 and the side support member 233 are connected by a first limiting groove 2336 and a first limiting part 2540. The first limiting groove 2336 is provided on one of the side support member 233 and the first rotating member 254, and the first limiting part 2540 is provided on the other of the first rotating member 254 and the side support member 233. In this embodiment, a limiting block 2335 protrudes from the back surface 2332 of the side support member 233. The limiting block 2335 has an arc-shaped first limiting groove 2336 that penetrates through the two opposite sides of the limiting block 2335. The first limiting groove 2336 bends and extends towards the side closer to the positioning seat 251, that is, the first end of the first limiting groove 2336 is close to the back surface 2332, and the opposite second end of the first limiting groove 2336 is away from the back surface 2332. The first limiting groove 2336 is formed by bending and extending from the first end to the second end.

[0069] Preferably, the first limiting groove 2336 includes a first limiting segment 2336a and a second limiting segment 2336b located at opposite ends thereto. The first limiting segment 2336a is further away from the positioning seat 251 than the second limiting segment 2336b. The first limiting part 2540 is a first limiting post passing through the first limiting groove 2336. When the two side supports 233 are in a flattened state, the first limiting post is positioned at the first limiting segment 2336a (e.g., ...). Figure 16 (as shown), to prevent the side support members 233 from folding back and damaging the flexible screen 30; when the two side support members 233 are in a fully folded state, the limiting post is positioned at the second limiting segment 2336b (as shown). Figure 23 (As shown), to prevent the side support 233 from further folding and damaging the flexible screen 30.

[0070] In some embodiments, the first limiting groove 2336 on the limiting block 2335 may also extend obliquely to the side away from the positioning seat 251. The first limiting segment 2336a and the second limiting segment 2336b are located at opposite ends of the first limiting groove 2336, with the first limiting segment 2336a being further away from the positioning seat 251 than the second limiting segment 2336b.

[0071] Please refer to the following: Figures 5-10The first rotating member 254 and the positioning seat 251 are connected by a second arc groove 2511 and a second arc rail 2541. The axis of the second arc groove 2511 is collinear with the axis of rotation between the first rotating member 254 and the positioning seat 251. The second arc groove 2511 is located on one of the positioning seat 251 and the first rotating member 254, and the second arc rail 2541 is located on the other. The axis of the second arc groove 2511 is collinear with the axis of rotation of the second arc rail 2541, and the axis of rotation of the second arc rail 2541 is collinear with the axis of rotation between the first rotating member 254 and the positioning seat 251. In this embodiment, the positioning base 251 has a second arc groove 2511 on each of its two opposite sides, and each first rotating member 254 has a second arc rail 2541 corresponding to the second arc groove 2511 on one end away from the connecting member 256, so that the first rotating member 254 and the positioning base 251 can rotate relative to each other along the second arc groove 2511.

[0072] In some embodiments, the second arc groove may also be provided on the first rotating member 254, and the second arc rail may also be provided on the positioning seat 251, with the second arc rail slidably accommodated in the second arc groove. Specifically, the first rotating member 254 has the second arc groove at one end away from the connecting member 256, and the positioning seat 251 has a second arc rail corresponding to the second arc groove.

[0073] The second rotating component 255 and the positioning seat 251 are connected by a third arcuate groove 2512 and a third arcuate rail 2552. The axis of the third arcuate groove 2512 is collinear with the axis of rotation between the second rotating component 255 and the positioning seat 251. The third arcuate groove 2512 is located in one of the positioning seat 251 and the second rotating component 255, and the third arcuate rail 2552 is located in the other of the second rotating component 255 and the positioning seat 251. The axis of the third arcuate groove 2512 is collinear with the axis of rotation of the third arcuate rail 2552, and the axis of rotation of the third arcuate rail 2552 is collinear with the axis of rotation between the second rotating component 255 and the positioning seat 251. In this embodiment, the positioning seat 251 is provided with a third arc groove 2512 on both sides opposite to the end away from the second arc groove 2511. Each second rotating member 255 is provided with a third arc rail 2552 corresponding to the third arc groove 2512 at the end away from the connecting member 256, so that the second rotating member 255 and the positioning seat 251 can rotate relative to each other along the third arc groove 2512.

[0074] In some embodiments, the third arc groove 2512 may also be provided on the second rotating member 255, and the third arc rail 2552 may also be provided on the positioning seat 251, with the third arc rail 2552 slidably accommodated in the third arc groove 2512. Specifically, the second rotating member 255 has a third arc groove at one end away from the connecting member 256, and the positioning seat 251 has a third arc rail corresponding to the third arc groove, with the third arc rail slidably accommodated in the third arc groove.

[0075] like Figures 7-10As shown, in this embodiment, the positioning seat 251 includes a first seat body 2510 and a second seat body 2516 that can be interlocked. The ends of the first rotating member 254 and the second rotating member 255 away from the connecting member 256 are clamped between the first seat body 2510 and the second seat body 2516. The first seat body 2510 is a rectangular block, and includes a front facing the second seat body 2516. A second arc groove 2511 is provided on each of the opposite sides of one end of the front face, and a third arc groove 2152 is provided on each of the opposite sides of the other end of the front face. The axis of the second arc groove 2511 on the same side of the first seat body 2510 and the axis of the third arc groove 2512 can be parallel or collinear. In this embodiment, the axis of the first arc groove 2511 on the same side of the first seat body 2510 is parallel to the axis of the third arc groove 2152. In some embodiments, the axis of the first arc groove 2511 on the same side of the first base 2510 is collinear with the axis of the third arc groove 2152. The first base 2510 has a first clearance groove 2513 on the side of each second arc groove 2511 away from the other second arc groove 2511, the first clearance groove 2513 being used to avoid the first rotating member 254. The first base 2510 also has a first clearance groove 2513 on the side of each third arc groove 2512 away from the other third arc groove 2512, the first clearance groove 2513 being used to avoid the second rotating member 255. Connecting holes 2515 are respectively provided on opposite sides of the end face of the first base 2510 near the third arc groove 2512. The second seat 2516 is a rectangular block. The second seat 2516 includes a back side facing the first seat 2510 and a front side facing away from the back side. One end of the back side of the second seat 2516 has a first arcuate convex surface 2517 on each of the opposite sides. The other end of the back side of the second seat 2516 has a second arcuate convex surface 2518 on each of the opposite sides. The axis of the first arcuate convex surface 2517 on the same side of the second seat 2516 and the axis of the second arcuate convex surface 2518 can be parallel or collinear. In this embodiment, the axis of the first arcuate convex surface 2517 on the same side of the second seat 2516 and the axis of the second arcuate convex surface 2518 are parallel. The second seat 2516 has second clearance grooves 2519 on both sides of each first arcuate convex surface 2517 and on both sides of each second arcuate convex surface 2518. The second clearance grooves 2519 are used to avoid the second arcuate rail 2541 and the third arcuate rail 2552. When the first seat 2510 and the second seat 2516 are engaged, the two first arcuate convex surfaces 2517 are respectively aligned with the two second arcuate grooves 2511, and the two second arcuate convex surfaces 2518 are respectively aligned with the two third arcuate grooves 2512.

[0076] like Figures 7-10As shown, the end of the first rotating member 254 away from the positioning seat 251 is rotatably connected to the connecting member 256, and the end of the second rotating member 255 away from the positioning seat 251 is rotatably connected to the connecting member 256. Specifically, the first rotating member 254 and the connecting member 256 are connected by a first connecting shaft 2501 and a first connecting hole 2503, with the first connecting shaft 2501 located in one of the first rotating member 254 and the connecting member 256, and the first connecting hole 2503 located in the other of the first rotating member 254 and the connecting member 256. The second rotating member 255 and the connecting member 256 are connected by a second connecting shaft 2502 and a second connecting hole 2504, with the second connecting shaft 2502 located in one of the second rotating member 255 and the connecting member 256, and the second connecting hole 2504 located in the other of the second rotating member 255 and the connecting member 256.

[0077] The first rotating member 254 includes a second arcuate rail 2541, a connecting portion 2542, and a support portion 2543 connecting the second arcuate rail 2541 and the connecting portion 2542. The second arcuate rail 2541 is rotatably connected to the positioning seat 251, and the connecting portion 2542 is rotatably connected to the connecting member 256. The connecting portion 2542 is slidably and rotatably connected to the side support member 233. The second arcuate rail 2541 is an arcuate block. The back side of the arcuate block is slidably attached to the inner surface of the second arcuate groove 2511 of the first seat 2510, and the front side of the arcuate block is slidably attached to the first arcuate convex surface 2517 of the second seat 2516. The first limiting post is located at the end of the first rotating member 254 away from the positioning seat 251, and the axis of the first limiting post is parallel to the first rotation axis C1. Specifically, the end of the connecting portion 2542 away from the second arc track 2541 has a shaft hole 2544 along a direction parallel to the axis of the second arc track 2541. The first connecting shaft 2501 passes through the shaft hole 2544, and the axis of the first connecting shaft 2501 is parallel to the axis of the second arc track 2541. A connecting hole is provided on one side of the connecting portion 2542 near the shaft hole 2544, and a first limiting portion 2540 is connected to the connecting hole. Specifically, a connecting cylinder protrudes from one side of the connecting portion 2542 near the shaft hole 2544, and the first limiting portion 2540 is connected to the inner cavity of the connecting cylinder. In this embodiment, one end of the first limiting post is inserted and fixed in the inner cavity of the connecting cylinder, and the axis of the first limiting post is parallel to the axis of the second arc track 2541. One end of the first limiting part 2540 is fixedly connected to the connecting part 2542, and the other end of the first limiting part 2540 is slidably and rotatably inserted into the first limiting groove 2336 of the side support member 233. In this embodiment, the support part 2543 is an arc-shaped strip, and the two opposite ends of the support part 2543 are respectively connected to one end of the second arc track 2541 and one end of the connecting part 2542. Preferably, the side of the connecting part 2542 facing away from the second arc track 2541 forms an arc surface, which is beneficial for the first rotating member 254 to rotate relative to the connecting member 256.

[0078] In some embodiments, the first limiting portion 2540 may also be integrally formed with the first rotating member 254.

[0079] In some embodiments, the first connecting shaft 2501 may also be disposed on the connector 256, and the first connecting shaft 2501 is rotatably connected to the connecting portion 2542 of the first rotating member 254. The first connecting shaft 2501 may be integrally formed with the connector 256.

[0080] The second rotating component 255 includes a third arc track 2552, a connecting portion 2553, and a support portion 2555 connecting the third arc track 2552 and the connecting portion 2553. The third arc track 2552 is rotatably connected to the positioning seat 251, and the connecting portion 2553 is rotatably connected to the connecting component 256. The third arc track 2552 is an arc-shaped block. The back side of the arc-shaped block is slidably attached to the inner surface of the third arc groove 2512 of the first seat 2510, and the front side of the arc-shaped block is slidably attached to the second arc convex surface 2518 of the second seat 2516. The end of the connecting portion 2552 away from the third arc track 2552 is provided with a shaft hole 2554 along a direction parallel to the axis of the third arc track 2552. The second connecting shaft 2502 passes through the shaft hole 2554, and the axis of the second connecting shaft 2502 is parallel to the axis of the third arc track 2552. Preferably, the side of the connecting part 2553 facing away from the third arc track 2552 forms an arc surface, which is beneficial for the second rotating part 254 to rotate relative to the connecting part 256.

[0081] In some embodiments, the second connecting shaft 2502 may also be disposed on the connector 256, and the second connecting shaft 2502 is rotatably connected to the connecting portion 2542 of the second rotating member 255. The second connecting shaft 2502 may be integrally formed with the connector 256.

[0082] In some embodiments, the second arc groove 2511 on the positioning seat 251 and the second arc rail 2541 on the first rotating member 254 can be interchanged; for example, an arc groove can be provided on the second arc rail 2541, and an arc rail corresponding to the arc groove can be provided on the positioning seat 251. The arc rail is rotatably inserted into the arc groove, and the axis of rotation of the arc groove, the axis of rotation of the arc rail, and the axis of rotation between the first rotating member 254 and the positioning seat 251 are collinear.

[0083] In some embodiments, the third arc groove 2512 on the positioning seat 251 and the third arc rail 2552 on the third rotating member 255 can be interchanged; for example, an arc groove can be provided on the third arc rail 2552, and an arc rail corresponding to the arc groove can be provided on the positioning seat 251. The arc rail is rotatably inserted into the arc groove, and the axis of rotation of the arc groove, the axis of rotation of the arc rail, and the axis of rotation between the third rotating member 255 and the positioning seat 251 are collinear.

[0084] like Figure 9 and Figure 10As shown, the connector 256 is strip-shaped, and at least one end of the connecting plate 2560 is provided with a first arc track 2562. A pair of mutually spaced first connecting portions 2564 and a pair of mutually spaced second connecting portions 2565 are protruding from the surface of the connecting plate 2560 facing the side support member 233 (i.e., the front side). The connecting portion 2542 of the first rotating member 254 is rotatably connected between the pair of first connecting portions 2564, and the connecting portion 2553 of the second rotating member 255 is rotatably connected between the pair of second connecting portions 2565. In this embodiment, the pair of first connecting portions 2564 are first lugs protruding from the front side of the connecting plate 2560, and a first connecting hole 2503 is provided at the end of the first lug away from the connecting plate 2560; the pair of second connecting portions 2565 are second lugs protruding from the front side of the connecting plate 2560, and a second connecting hole 2504 is provided at the second lug. The connecting plate 2560 has a clearance groove between a pair of second connecting portions 2565. The clearance groove is used to avoid the connecting portion 2553 of the second rotating member 255, so as to prevent the connecting portion 2553 from being unable to rotate relative to the connecting member 256.

[0085] The linkage 264 and the connecting member 256 are connected by a guide groove and a rotating shaft. The guide groove can be provided in one of the linkage 264 and the connecting member 256, and the rotating shaft can be provided in the other of the linkage 264 and the connecting member 256. In this embodiment, a support plate 2566 is provided at the end of the connecting plate 2560 opposite to the first arc track 2562. The support plate 2566 is provided with an arc-shaped guide groove 2567, which passes through the two opposite sides of the support plate 2566 along a direction parallel to the axis of the first connecting hole 2503. The guide groove 2567 bends towards the side closer to the connecting plate 2560. The guide groove 2567 includes a first positioning section 2567a and a second positioning section 2567b located at opposite ends. The first positioning section 2567a and the second positioning section 2567b are interconnected, and the first positioning section 2567a is further away from the positioning seat 251 than the second positioning section 2567b. The connecting plate 2560 has a clearance groove between the support plate 2566 and the first connecting part 2564. The clearance groove is used to avoid the linkage member 264 from being unable to rotate relative to the connecting member 256.

[0086] Please refer to the following: Figures 7-10The linkage assembly 26 further includes a gear assembly 265 located between each pair of linkage members 264 and two rotating shafts 266, with the linkage members 264 rotatably connected to the rotating shafts 266. In this embodiment, the linkage assembly 26 includes two pairs of linkage members 264 and two gear assemblies 265. The two pairs of linkage members 264 are respectively connected to two rotating shafts 266, and a gear assembly 265 is provided between each pair of linkage members 264. The end of each linkage member 264 away from the connecting member 256 is provided with a first gear meshing with the gear assembly 265. The two opposite ends of the linkage seat 261 are respectively provided with shaft holes 2611, and the two rotating shafts 266 are respectively passed through the two shaft holes 2611. The linkage 264 includes a first sleeve 2642 sleeved on the rotating shaft 266, a connecting rod 2643 connected to the outer peripheral wall of the first sleeve 2642, and a connecting portion 2645 provided on the connecting rod 2643 away from the first sleeve 2642. The outer peripheral wall of the first sleeve 2642 is provided with a first gear meshing with the gear assembly 265. The connecting portion 2645 is slidably and rotatably connected to the connecting member 256. In this embodiment, the rotation angle range of the teeth of the first gear arranged circumferentially along the first sleeve 2642 is greater than 90 degrees and less than 180 degrees, that is, the first gear is provided on the outer peripheral wall of the first sleeve 2642 at more than one-quarter and less than one-half. The first sleeve 2642 is provided with a shaft hole 2646 along the axis of the first gear, the rotating shaft 266 passes through the shaft hole 2646, and the connecting portion 2645 is provided with a fixing hole 2647 along the axis parallel to the first gear.

[0087] like Figure 11 and Figure 12 As shown, the limiting mechanism 27 includes a pushing member 271 disposed on the linkage member 264. Specifically, the pushing member 271 is connected to the end of the first sleeve 2642 opposite to the linkage seat 261. The pushing member 271 includes a first cam (not shown in the figure), which is disposed on the end face of the first sleeve 2642 opposite to the linkage seat 261. The first cam is sleeved on the rotating shaft 266, and the axis of the first cam is coaxial with the axis of the first sleeve 2642. The axis of the first gear is colinear with the axis of the first sleeve 2642. The first cam includes a concave-convex surface disposed at one end of the first sleeve 2642. The concave-convex surface includes a first protrusion and a first recess, which are arranged sequentially at intervals along the circumference of the first sleeve 2642. The number of the first protrusions and the number of the first recesses can be set as needed. For example, the first cam may include one first protrusion and one first recess, two first protrusions and two first recesses, three first protrusions and three first recesses, or four first protrusions and four first recesses, etc. In this embodiment, the first cam includes three first protrusions and three first recesses arranged circumferentially along the first sleeve 2642.

[0088] The gear assembly 265 includes two meshing second gears 2652. The first gear of each pair of linkages 264 meshes with the two second gears 2652 respectively. The diameter of the pitch circle of the second gear 2652 is smaller than the diameter of the pitch circle of the first gear, and the number of teeth of the second gear 2652 in one circle is less than the number of teeth of the first gear in one circle.

[0089] In some embodiments, the gear combination 265 between each pair of linkages 264 can be omitted, and the first gears on a pair of linkages 264 mesh with each other; the pair of linkages 264 can achieve synchronous rotation through the gear combination, thereby further reducing the width of the rotating shaft device 22.

[0090] In some embodiments, the gear combination between each pair of linkages 264 includes a plurality of meshing second gears, wherein two second gears respectively mesh with the first gear of a pair of linkages 264; the pair of linkages 264 can achieve synchronous rotation through the gear combination.

[0091] In some embodiments, the linkage component 26 may also include only a pair of linkage members 264 and a gear assembly 265 disposed between the pair of linkage members 264.

[0092] like Figure 11 and Figure 12 As shown, the rotating shaft 266 includes a shaft body 2660 and a positioning cap 2662 located at one end of the shaft body 2660. A groove 2663 is provided at the end of the shaft body 2660 away from the positioning cap 2662. The groove 2663 is located on the outer peripheral wall of the shaft body 2660 and surrounds the shaft body 2660 in a circumferential manner.

[0093] Please refer to the following: Figures 5-12The limiting mechanism 27 also includes a supporting member 273 and an elastic member 274. The elastic member 274 provides elastic force for the supporting member 273 and the pushing member 271 to abut against each other. The rotating mechanisms 253 on both sides of the positioning seat 251 rotate synchronously relative to the positioning seat 251 through the linkage component 26. The pushing member 271 rotates relative to the supporting member 273 with the linkage component 264. The elastic member 274 is elastically compressed and undergoes elastic deformation. The frictional resistance between the pushing member 271 and the supporting member 273 positions the linkage component 264 relative to the linkage seat 261, thereby positioning the side support member 233 relative to the positioning seat 251 at a specific angle. The specific angle range is the included angle between the two side support members 233, which is between 70 degrees and 130 degrees. Specifically, when the two side supports 233 of the rotating shaft device 22 are synchronously unfolded or folded to an angle equal to or greater than 70 degrees and less than or equal to 130 degrees via the rotating assembly 25 and the linkage assembly 26, the friction between the pushing member 271 and the holding member 273 helps to position the two side supports 233, that is, the two side supports 233 do not rotate relative to each other without external force. Specifically, the holding member 273 includes a second cam 2730, the first cam and the second cam 2730 are rotatably abutting each other, and the elastic member 274 elastically pushes against the holding member 273. When the first cam rotates relative to the second cam 2730, the first cam rotatably pushes the second cam 2730 to slide away from or towards the linkage seat 261, the elastic member 274 is squeezed, and the frictional resistance between the first cam and the second cam 2730 can limit the pushing member 271 relative to the holding member 273 to a specific angle.

[0094] In this application, within a certain height and width space between two rotating shafts 266, the diameter of the pitch circle of the first gear is increased by two second gears 2652 disposed between the two rotating shafts 266, thereby increasing the outer diameter of the first cam. This allows for greater frictional torque between the first cam and the second cam 2730, and reduces fatigue wear of the first cam, thus extending its service life. In this embodiment, the abutment member 273 includes a connecting portion 2732 and two second cams 2730 disposed at opposite ends of the connecting portion 2732. That is, the two second cams 2730 are located at opposite ends of the connecting portion 2732, and the two second cams 2730 are slidably sleeved on the two rotating shafts 266 respectively. The first sleeve 2642 of the linkage 264 is rotatably connected to the rotating shaft 266. The end of the linkage 264 away from the first sleeve 2642 is slidably and rotatably connected to the connecting member 256. The linkage 264 rotates with the connecting member 256 along the rotating shaft 266 relative to the linkage seat 261 to drive the first cam to rotate relative to the second cam 2730. The abutment 273 can slide along the axial direction of the rotating shaft 266. Specifically, the second cam 2730 includes a circular sleeve and a concave-convex surface provided at one end away from the connecting part 2732. The concave-convex surface includes a second protrusion and a second recess. The second protrusion and the second recess are arranged sequentially at intervals along the circumference of the sleeve. The number of second protrusions and the number of second recesses on the second cam 2730 are the same as the number of first recesses and the number of first protrusions on the first cam of the abutment 271, so that the first protrusion engages with the second recess, and the second protrusion engages with the first recess. The second cam 2730 has a through hole 2734 along a direction parallel to the axis of rotation 266, and the through hole 2734 passes through the abutment member 273. In this embodiment, the limiting mechanism 27 includes two abutment members 273 and two elastic members 274. The two second cams 2730 of one abutment member 273 respectively cooperate with the first cams on one pair of linkage members 264, and the two second cams 2730 of the other abutment member 273 respectively cooperate with the first cams on another pair of linkage members 264. The two elastic members 274 are springs respectively sleeved on the two rotation shafts 266.

[0095] like Figure 11 and Figure 12As shown, the limiting mechanism 27 also includes a positioning member 275 and a washer 277 disposed on the rotating shaft 266 away from the pushing member 271. The positioning member 275 is used to position the elastic member 274 on the rotating shaft 266, and the washer 277 is sleeved on the rotating shaft 266 and located between the positioning member 275 and the elastic member 274. The positioning member 275 includes a positioning piece 2751 and two buckles 2753 disposed at opposite ends of the positioning member 2751. The opposite end faces of the positioning piece 2751 are formed into arc surfaces, and the buckles 2753 are C-shaped retaining rings. The opposite end faces of the washer 277 are formed into arc surfaces, and the opposite end faces of the washer 277 are respectively provided with through holes 2771.

[0096] like Figures 7-8 As shown, the rotating shaft device 22 also includes a back cover 28, a positioning seat 251, and a linkage seat 261 connected to the back cover 28. Specifically, the back cover 28 is a strip frame with a receiving groove 280. The positioning seat 251 and the linkage seat 261 are accommodated in the receiving groove 280 and fixedly connected to the back cover 28. Preferably, the back cover 28 has a first mounting portion (not shown) and a second mounting portion (not shown) on the inner surface of the receiving groove 280. The positioning seat 251 is connected to the first mounting portion, and the linkage seat 261 is connected to the second mounting portion. The connection between the positioning seat 251 and the first mounting portion can be achieved by, but is not limited to, screwing, snap-fitting, or gluing.

[0097] Please refer to the following: Figures 3-19When assembling the rotating shaft device 22, the ends of the connecting portions 2542 of the two first rotating members 254 away from the second arc rail 2541 are respectively housed between a pair of first connecting portions 2564 of the two connecting members 256, so that the two first connecting shafts 2501 are respectively inserted into the shaft holes 2544 and the corresponding first connecting holes 2503 of the two connecting portions 2542, so that the two first connecting members 254 are rotatably connected to the two connecting members 256; the ends of the connecting portions 2553 of the two second rotating members 255 away from the third arc rail 2552 are respectively housed between a pair of second connecting portions 2565 of the two connecting members 256, so that the two second connecting shafts 2502 are respectively inserted into the shaft holes 2554 and the corresponding second connecting holes 2504 of the two connecting portions 2553, so that the two second rotating members 255 are rotatably connected to the two connecting members 256. The second arc tracks 2541 of the two first rotating members 254 are respectively housed in the two second arc grooves 2511 of the first base 2510, and the third arc tracks 2552 of the two second rotating members 255 are respectively housed in the two third arc grooves 2512 of the first base 2510. Then, the second base 2516 is placed over the first base 2510, such that the two first arc convex surfaces 2517 of the second base 2516 are respectively attached to the front surfaces of the two second arc tracks 2541, and the two second arc convex surfaces 2518 are respectively attached to the front surfaces of the two third arc tracks 2552, so that the first rotating members 254 and the second rotating members 255 are rotatably connected to the positioning base 251. At this time, the rotation axis C3 between the first rotating member 254 and the positioning base 251 is parallel and spaced apart from the rotation axis C4 between the second rotating member 255 and the positioning base 251.

[0098] like Figures 11-12As shown, insert two rotating shafts 266 into the two through holes 2734 of one of the supporting members 273 until the two positioning caps 2662 abut against the surface of the supporting member 273 away from the second cam 2730; assemble two gear assemblies 265 between the two pairs of linkage members 264, and make the second gear 2652 of each gear assembly 265 mesh with the first gear on the corresponding linkage member 264; insert the two rotating shafts 266 away from the end of the positioning cap 2662 into the two shaft holes 2646 of one pair of linkage members 264 until the first cam of the pushing member 271 on one pair of linkage members 264 respectively engages with the two second cams 2730 on one of the supporting members 273; insert the two rotating shafts 266 away from the end of the positioning cap 2662 into the two shaft holes 2611 of the linkage seat 261 until the side of the linkage seat 261 is in contact with one pair of linkage members 264; Two rotating shafts 266 are inserted into the two shaft holes 2646 of another pair of linkage members 264 away from the positioning cap 2662, until the end face of the other pair of linkage members 264 away from the push member 271 is in contact with the linkage seat 261; the ends of the two rotating shafts 266 away from the positioning cap 2662 are respectively inserted into the two through holes 2734 of another support member 273, until the two second cams 2730 of the other support member 273 are respectively engaged with the two first cams on the other pair of linkage members 264; two elastic members 274 are respectively sleeved on the ends of the two rotating shafts 266 away from the positioning cap 2662; a gasket 277 is sleeved on the ends of the two rotating shafts 266 away from the positioning cap 2662, that is, the ends of the two rotating shafts 266 away from the positioning cap 2662 are respectively inserted into the two through holes 2771 of the gasket 277; and two buckles 2753 are respectively snapped into the slots 2663 of the two rotating shafts 266. At this time, the positioning member 275 abuts against the pad 277, and the linkage member 264, the holding member 273, and the elastic member 274 are sleeved on the rotating shaft 266. The elastic member 274 is in a compressed state, that is, the elastic member 274 has a pre-elastic force. The elastic member 274 elastically pushes against the holding member 273, so that the two holding members 273 respectively cooperate with the two pairs of linkage members 264. Specifically, the two second cams 2730 of one holding member 273 respectively cooperate with the first cams of a pair of linkage members 264, and the two second cams 2730 of the other holding member 273 respectively cooperate with the first cams of another pair of linkage members 264. At this time, the first protrusion is accommodated in the second recess, and the second protrusion is accommodated in the first recess. If the elastic element 274 has a pre-elastic force F0, each first cam can rotate and abut against the corresponding second cam 2730. The axial force F on the first cam, the second cam and 2720 on each rotating shaft 266 is equal to the pre-elastic force F0 of the elastic element 274, that is, F = F0.

[0099] like Figures 5-8As shown, the integrated linkage component 26 and limiting mechanism 27 are placed at one end of the rotating component 25, so that the positioning caps 2662 of the two rotating shafts 266 are respectively connected to the two connecting holes 2515 of the positioning seat 251; the support plates 2566 of the two connecting parts 256 are respectively placed between the corresponding two pairs of linkage parts 264, so that the fixing hole 2647 of each linkage part 264 corresponds to the corresponding guide groove 2567; the two rotating shafts 2648 are respectively inserted into the two guide grooves 2567, so that the opposite ends of each rotating shaft 2648 are respectively inserted into the fixing holes 2647 of the corresponding linkage part 264, and the rotating shafts 2648 can slide and rotate in the corresponding guide grooves 2567. Two side supports 233 are placed on opposite sides of the front of the rotating assembly 25. The first arc rail 2562 of each connector 256 is inserted into the first arc groove 2334 of the corresponding side support 233, and the first limiting part 2540 of the first rotating member 254 is slidably inserted into the first limiting groove 2336 of the side support 233. The rotating assembly 25, the linkage assembly 26, and the limiting mechanism 27 are placed in the back cover 28, and the positioning seat 251 and the linkage seat 261 are respectively connected to the back cover 28. When the two side supports 233 are flattened, the front of the two side supports 233 is coplanar with the front of the positioning seat 251. The first arc rail 2562 is rotatably accommodated in the corresponding first arc groove 2334. The first limiting part 2540 is positioned in the first limiting section 2336a of the first limiting groove 2336, and the rotating shaft 2648 is positioned in the first positioning section 2567a of the guide groove 2567. When the two side supports 233 are folded, the front of the two side supports 233 and the front of the positioning seat 251 together form a teardrop-shaped space. The first arc track 2562 is rotatably accommodated in the corresponding first arc groove 2334. The first limiting part 2540 is positioned in the second limiting section 2336b of the first limiting groove 2336, and the rotating shaft 2648 is positioned in the second positioning section 2567b of the guide groove 2567.

[0100] like Figure 17 and Figure 18As shown, the first distance L1 between the rotation axis C3 between the first rotating member 254 and the positioning seat 251 and the first rotation axis C1 between the first rotating member 254 and the connecting member 256 is greater than the second distance L2 between the rotation axis C4 between the second rotating member 255 and the positioning seat 251 and the second rotation axis C2 between the second rotating member 255 and the connecting member 256. The first distance L1 is the distance between the first rotation axis C1 and the rotation axis C3 along the flattening direction, and the second distance L2 is the distance between the second rotation axis C2 and the rotation axis C4 along the flattening direction. Specifically, the first rotation axis C1 is the axis of the first connecting shaft 2501, the second rotation axis C2 is the axis of the second connecting shaft 2502, the rotation axis C3 between the first rotating member 254 and the positioning seat 251 is the axis of the virtual axis, and the rotation axis C4 between the second rotating member 255 and the positioning seat 251 is the axis of the virtual axis. The first rotation axis C1, the second rotation axis C2, the rotation axis C3 and the rotation axis C4 are parallel to each other. The rotation axis C3 and the rotation axis C4 are closer to the flexible screen 30 than the first rotation axis C1 and the second rotation axis C2, and the first rotation axis C1 is closer to the flexible screen 30 than the second rotation axis C2.

[0101] In some embodiments, the rotation axis C3 between the first rotating member 254 and the positioning seat 251 may also be collinear with the rotation axis C4 between the second rotating member 255 and the positioning seat 251.

[0102] When the connector 256 drives the first rotating member 254 and the second rotating member 255 to rotate relative to the positioning seat 251, at the same time, the connector 256 drives the linkage member 264 to rotate relative to the linkage seat 261. The rotating mechanism 253 and the linkage member 264 drive the side support member 233 to rotate and slide relative to the positioning seat 251, so that the two side support members 233 can fold or unfold synchronously relative to each other. Specifically, the first rotating member 254 rotates relative to the positioning seat 251 via the second arc track 2541 and the second arc groove 2511; the second rotating member 255 rotates relative to the positioning seat 251 via the third arc track 2552 and the third arc groove 2512; the linkage member 264 rotates with the rotating mechanism 253 along the corresponding rotating shaft 266, so that the first gear of the linkage member 264 rotatably meshes with the corresponding second gear 2652, realizing the synchronous rotation of the two pairs of linkage members 264 of the limiting mechanism 27; the first limiting part 2540 slides and rotates in the first limiting groove 2336; the rotating shaft 2648 slides and rotates in the guide groove 2567, so as to realize the synchronous folding or synchronous unfolding of the two side support members 233.

[0103] like Figures 19-26When the rotating shaft device 22 is bent from its flattened state, one of the connecting members 256 is bent relative to the positioning seat 251 toward the other connecting member 256. The connecting member 256 drives the second arc track 2541 of the first rotating member 254 to rotate in the second arc groove 2511 of the positioning seat 251, and drives the third arc track 2552 of the second rotating member 255 to rotate in the third arc groove 2512 of the positioning seat 251. The first limiting part 2540 on the first rotating member 254 slides and rotates in the first limiting groove 2336, and the first limiting part 2540 moves from the first limiting section 2336a to the second limiting section 2336b, so as to drive the corresponding linkage member 264 to rotate along the rotating shaft 266. The rotating shaft 2648 on the linkage member 264 rotates and slides in the corresponding guide groove 2567, and the rotating shaft 2648 moves from the first positioning section 2567a to the second positioning section 2567b. Simultaneously, one of the connecting members 256 drives the corresponding linkage member 264 to rotate relative to the linkage seat 261. The rotation of the linkage member 264 drives the corresponding first gear to rotate. Through the gear combination 265, the corresponding two first gears rotate synchronously. The synchronously rotating first gears drive the two pairs of linkage members 264 to move closer to each other synchronously. The connecting member 256 drives the first arc track 2562 to rotate and connect to the corresponding first arc groove 2334, so that the linkage members 264 on both sides of the linkage seat 261 rotate synchronously relative to the linkage seat 261 and move closer to each other, so as to drive the two side support members 233 to move closer to each other synchronously, until the two side support members 233 and the positioning seat 251 form a teardrop shape in cross section.

[0104] During the folding process of the side support 233 relative to the positioning seat 251, the first limiting part 2540 moves from the first limiting section 2336a of the first limiting groove 2336 to the second limiting section 2336b, and the rotating shaft 2648 moves from the first positioning section 2567a of the guide groove 2567 to the second positioning section 2567b. The first rotation axis C1 on opposite sides of the positioning seat 251 approaches each other, and the second rotation axis C2 on opposite sides of the positioning seat approaches each other, so that the front of the two side support 233 and the front of the positioning seat 251 form a teardrop-shaped space. The axial force between the first cam and the corresponding second cam 2730 on each rotating shaft 266 is equal to the elastic force of the elastic member 274; the frictional resistance between the first cam and the second cam 2730 can limit the two side support 233 to a specific angle between 70 degrees and 130 degrees.

[0105] In other usage scenarios, the two connectors 256 can rotate together in opposite directions. Each connector 256 rotates relative to the second arc track 2541 of the corresponding first rotating member 254 and the second arc groove 2511 of the positioning seat 251, and the third arc track 2552 of the corresponding second rotating member 255 rotates relative to the third arc groove 2512 of the positioning seat 251, thereby driving the linkage 264 of the limiting mechanism 27 to rotate along the corresponding rotation axis 266. Simultaneously, the two connectors 256 synchronously drive the first arc track 2562 to rotate in the first arc groove 2334 of the side support member 233. The first limiting part 2540 on the first rotating member 254 slides and rotates in the first limiting groove 2336 of the corresponding side support member 233. The first limiting part 2540 moves from the first positioning section 2336a to the second positioning section 2336b; the rotation of the linkage 264 drives the corresponding first gear to rotate, and through the gear combination 265 drives the corresponding two pairs of first gears to rotate synchronously. The synchronously rotating first gear drives the corresponding linkage 264 to move closer to each other synchronously. The rotating shaft 2648 on the linkage 264 rotates and slides in the corresponding guide groove 2567, and the rotating shaft 2648 moves from the first positioning section 2567a to the second positioning section 2567b. At the same time, the rotating mechanisms 253 on both sides of the limiting mechanism 27 rotate synchronously relative to the positioning seat 251 and move closer to each other, so as to drive the two side support members 233 to move closer to each other synchronously, until the two side support members 233 and the positioning seat 251 form a teardrop shape in cross section.

[0106] When the rotating shaft device 22 is unfolded from its fully bent state, one of the connecting members 256 is unfolded away from the other connecting member 256 relative to the positioning seat 251. The connecting member 256 drives the second arc track 2541 of the first rotating member 254 to rotate in the second arc groove 2511 of the positioning seat 251, and drives the third arc track 2552 of the second rotating member 255 to rotate in the third arc groove 2512 of the positioning seat 251. The first limiting part 2540 of the first rotating member 254 slides and rotates in the corresponding first limiting groove 2336, and the first limiting part 2540 moves from the second limiting section 2336b to the first limiting section 2336a; thereby driving the corresponding linkage member 264 to rotate along the rotating shaft 266. The rotating shaft 2648 on the linkage member 264 rotates and slides in the corresponding guide groove 2567, and the rotating shaft 2648 moves from the second positioning section 2567b to the first positioning section 2567a. The rotation of the linkage 264 drives the corresponding first gear to rotate, and the gear combination 265 drives the two corresponding first gears to rotate synchronously. The synchronously rotating first gear drives the two linkages 264 to move away from each other synchronously. At the same time, the limiting mechanism 27 drives the rotating mechanisms 253 on both sides to rotate synchronously relative to the positioning seat 251 and move away from each other. The connecting member 256 drives the first arc track 2562 to rotate and connect to the corresponding first arc groove 2334, so as to drive the two side support members 233 to unfold synchronously until the two side support members 233 and the positioning seat 251 are flattened.

[0107] During the flattening process of the side support member 233 relative to the positioning seat 251, the first limiting part 2540 moves from the second limiting section 2336b of the first limiting groove 2336 to the first limiting section 2336a, and the rotating shaft 2648 moves from the second positioning section 2567b of the guide groove 2567 to the first positioning section 2567a; the first rotation axis C1 of the positioning seat 251 on both sides moves away from each other, and the second rotation axis C2 of the positioning seat 251 on both sides moves away from each other, until the two side support members 233 are successfully flattened. The axial force on the first cam and the second cam 2730 on each rotating shaft 266 is equal to the elastic force of the elastic member 274; the frictional resistance between the first cam and the second cam 2730 can limit the two side support members 233 to a specific angle between 130 degrees and 70 degrees.

[0108] In other applications, the two connectors 256 can rotate together in directions away from each other. Each connector 256 drives the second arc track 2541 of the first rotating member 254 to rotate relative to each other along the second arc groove 2511 of the positioning seat 251, and drives the third arc track 2552 of the corresponding second rotating member 255 to rotate relative to the third arc groove 2512 of the positioning seat 251, thereby driving the linkage 264 of the limiting mechanism 27 to rotate along the corresponding rotation axis 266. At the same time, the two connectors 256 synchronously drive the first arc track 2562 to rotate in the first arc groove 2334 corresponding to the side support member 233. The first limiting part 2540 on the first rotating member 254 slides and rotates in the first limiting groove 2336 of the corresponding side support member 233. This causes the first limiting part 2540 to move from the second limiting segment 2336b to the first limiting segment 2336a; the rotation of the linkage 264 drives the corresponding first gear to rotate, and the gear combination 265 drives the corresponding first gear to rotate synchronously. The synchronously rotating first gear drives the corresponding linkage 264 to move away from each other synchronously. The rotating shaft 2648 on the linkage 264 rotates and slides in the corresponding guide groove 2567, and the rotating shaft 2648 moves from the second positioning segment 2567b to the first positioning segment 2567a; at the same time, the rotating mechanisms 253 on both sides of the limiting mechanism 27 rotate synchronously relative to the positioning seat 251 and move away from each other, so as to drive the two side support members 233 to move away from each other synchronously until the front of the two side support members 233 is flush with the front of the positioning seat 251.

[0109] In some embodiments, the first limiting portion 2540 on the first rotating member 254 and the first limiting groove 2336 on the side support member 233 are interchangeable. That is, the first limiting groove 2336 can be provided on the first rotating member 254, the first limiting portion 2540 can be fixed to the side support member 2334, and the first limiting portion 2540 is slidably and rotatably inserted into the first limiting groove 2336. Specifically, a limiting groove is provided on the side of the first rotating member 254 facing the limiting block 2335, and a limiting shaft that can be movably inserted into the limiting groove is provided on the limiting block 2335 of the side support member 233. During the bending or unfolding process of the rotating shaft device 22, the limiting shaft slides and rotates in the limiting groove.

[0110] In some embodiments, the rotating shaft 2648 on the linkage 264 and the guide groove 2567 on the connector 256 are interchangeable. That is, the guide groove 2567 can be provided on the linkage 264, and the rotating shaft 2648 can be fixed to the connector 256. The rotating shaft 2648 is slidably and rotatably inserted into the guide groove 2567. Specifically, the guide groove 2567 is provided on the surface of the support plate 2566 of the linkage 264 facing the connector 256, and the rotating shaft 2648 is provided on the support plate 2566 of the connector 256 and is movably inserted into the guide groove 2567. During the bending or unfolding process of the rotating shaft device 20, the rotating shaft 2648 slides and rotates in the guide groove 2567.

[0111] Please refer to the following: Figures 1-8 The installed hinge device 22 is placed between the two frames 21. The connectors 256 on opposite sides of the back cover 28 are respectively housed in the receiving slots 216 of the two frames 21, and the two connectors 256 are respectively fixedly connected to the two frames 21. At this time, the front faces 211 of the two frames 21, the front faces of the two side support members 233, and the front faces 2311 of the positioning seat 251 are coplanar. The back of the flexible screen 30 is connected to the front faces 211 of the two frames 21 and the front face of the hinge device 22. Specifically, the foldable area 31 faces the hinge device 22, and the two non-foldable areas 33 face the front faces of the two frames 21 respectively. When the flexible screen 30 is in a flattened state, the front of the positioning base 251 is flush with the front of the two side supports 233, and the first cam and the second cam 2730 are in contact with each other to keep the two side supports 233 in a flattened state. Since the front of the side supports 2331 is coplanar with the front of the positioning base 251, the flexible screen 30 will not be impacted by the step difference when flattened, and the flexible screen 30 will not have defects such as color spots or bright spots, ensuring the reliability of the flexible screen 30. At the same time, it also improves the touch feel of the flexible screen 30 and enhances the user experience. In addition, the first rotating member 254 and the side The supporting members 256 are connected to the first limiting part 2540 through the first limiting groove 2336. The linkage member 264 and the corresponding connecting member 256 are connected to the guide groove 2567 through the rotating shaft 2648. The side supporting member 233 and the connecting member 256 are connected to the first arc rail 2562 through the first arc groove 2334. Therefore, the connection between the components in the rotating shaft device 22 can be made more compact, thereby reducing the overall width of the rotating shaft device 22, reducing the internal space occupied by the housing 20, which is beneficial to the layout of other components such as the motherboard or battery, and is beneficial to the miniaturization of the electronic device 100.

[0112] Please refer to the following: Figures 15-26When bending the electronic device 100, a folding force is applied to at least one of the two frames 21 of the electronic device 100, causing the rotating mechanism 253 connected to the two frames 21 to rotate in a direction closer to each other. The folding of the pivot device 22 is achieved through the linkage component 26, and the foldable area 31 of the flexible screen 30 bends along with the pivot device 22. Specifically, if a folding force is applied to one of the frames 21, the frame 21 drives the corresponding first rotating member 254 to rotate relative to the positioning seat 251 towards the side closer to the flexible screen 30. Specifically, the second arc track 2541 of the first rotating member 254 rotates relative to the second arc groove 2511 of the positioning seat 251; the second rotating member 255 rotates relative to the positioning seat 251 towards the side closer to the flexible screen 30. Specifically, the third arc track 2552 of the second rotating member 255 rotates relative to the positioning seat 251. The third arc groove 2512 of 51 rotates relative to each other; the first limiting part 2540 on the first rotating member 254 slides and rotates in the first limiting groove 2336, and the first limiting part 2540 moves from the first limiting section 2336a to the second limiting section 2336b, so as to drive the corresponding linkage member 264 to rotate. The rotating shaft 2648 on the linkage member 264 rotates and slides in the corresponding guide groove 2567, and the rotating shaft 2648 moves from the first positioning section 2567a to the second positioning section 2567b. The rotation of the linkage member 264 drives the corresponding first gear to rotate, and through the gear combination 265, drives the two corresponding first gears to rotate synchronously. The synchronously rotating first gears drive the two pairs of linkage members 264 to move closer to each other synchronously. Simultaneously, the connector 256 drives the first arc track 2562 to rotate and connect to the corresponding first arc groove 2334. The limiting mechanism 27 and the rotating mechanisms 253 on both sides rotate synchronously relative to the positioning seat 251 and move closer to each other, so as to drive the two side support members 233 to move closer to each other synchronously, so that the rotating shaft device 22 is in a folded state. The foldable area 31 of the flexible screen 30 bends with the rotating shaft device 22 until the front of the two non-foldable areas 33 of the flexible screen 30 are in contact with each other, and the foldable area 31 is bent into a teardrop shape, thereby realizing the seamless folding of the electronic device 100.

[0113] During the bending of the electronic device 100, the frictional torque between the first cam and the second cam 2730 on each rotating shaft 266 resists the rebound force of the flexible screen 30, so that the two side supports 233 are positioned relative to each other at a specific angle, and the two frames 21 are limited to a specific angle between 70 degrees and 130 degrees. The foldable area 31 of the flexible screen 30 is bent into a teardrop shape, reducing the duty cycle of the foldable area 31 after bending, thereby reducing the overall thickness of the electronic device 100.

[0114] In other ways of folding the electronic device 100, a folding force can be applied to both frames 21 at the same time. The two frames 21 drive the two rotating mechanisms 253 to rotate toward the side closer to the flexible screen 30, and the electronic device 100 is folded through the rotating shaft device 22.

[0115] When the electronic device 100 needs to be flattened, one of the frames 21 is pulled outwards, causing the two rotating mechanisms 253 connected to the two frames 21 to rotate in a direction away from each other. Specifically, an outward pulling force is applied to one of the frames 21 of the electronic device 100, causing the corresponding first rotating member 254 to rotate relative to the positioning seat 251 away from the flexible screen 30, and causing the corresponding second rotating member 255 to rotate relative to the positioning seat 251 away from the flexible screen 30. The second arc track 2541 of the first rotating member 254 rotates relative to the second arc groove 2511 of the positioning seat 251, and the third arc track of the second rotating member 255 rotates relative to the positioning seat 251. 2552 rotates relative to the third arc groove 2512 of the positioning seat 251. At the same time, the first limiting part 2540 of the first rotating member 254 slides and rotates in the corresponding first limiting groove 2336, and the first limiting part 2540 moves from the second limiting segment 2336b to the first limiting segment 2336a; so as to drive the corresponding linkage member 264 to rotate along the rotating shaft 266. The rotating shaft 2648 on the linkage member 264 rotates and slides in the corresponding guide groove 2567, and the rotating shaft 2648 moves from the second limiting segment 2336b to the first limiting segment 2336a. The second positioning segment 2567b moves to the first positioning segment 2567a, thereby driving the corresponding linkage 264 to rotate along the rotation shaft 266. The rotation shaft 2648 of the linkage 264 rotates and slides in the corresponding guide groove 2567, and the rotation shaft 2648 moves from the second positioning segment 2567b to the first positioning segment 2567a. At the same time, the connecting member 256 drives the first arc track 2562 to rotate and connect to the corresponding first arc groove 2334. The rotation of the linkage 264 drives the corresponding first gear to rotate. Through the gear combination 265, the corresponding two pairs of first gears rotate synchronously. The synchronously rotating first gears drive the corresponding two pairs of linkages 264 to move away from each other synchronously. At the same time, the limiting mechanism 27 and the rotating mechanisms 253 on both sides rotate synchronously relative to the positioning seat 251 and move away from each other, thereby driving the two side support members 233 to move away from each other synchronously and flatten. This causes the rotating shaft device 22 to unfold, and the foldable area 31 of the flexible screen 30 unfolds with the rotating shaft device 22 until the flexible screen 30 is flattened.

[0116] During the flattening of the electronic device 100, the sum of the frictional torque between the first cam and the second cam 2730 on each rotating shaft 266 resists the rebound force of the flexible screen 30, so that the two side supports 233 are positioned relative to each other at a specific angle, and the two frames 21 are limited to a specific angle between 130 degrees and 70 degrees.

[0117] In other folding methods of the electronic device 100, an outward pulling force can be applied to both frames 21 at the same time. The two frames 21 drive the two rotating mechanisms 253 to rotate relative to the side away from the flexible screen 30, and the electronic device 100 is unfolded through the rotating shaft device 22.

[0118] The rotating shaft device 22 of the electronic device 100 of the present invention achieves synchronous folding or unfolding through the rotating assembly 25 and the linkage assembly 26. Since the first rotation axis C1 between the first rotating member 254 and the connecting member 256 is parallel and misaligned with the second rotation axis C2 between the second rotating member 255 and the connecting member 256, the first rotating member 251 and the side support member 233 are connected by an arc-shaped first limiting groove 2336 and a first limiting part 2540. The linkage assembly 264 and the connecting member 256 are connected by an arc-shaped guide groove 2567 and a rotating shaft 2648. Therefore, the rotating shaft device... The connections between the components in 22 are more compact, thereby reducing the overall width of the pivot device 22 and minimizing its footprint in the internal space of the housing 20, which is beneficial for the layout of other components such as the motherboard or battery. Secondly, because the elastic element 274 of the limiting mechanism 27 can provide a large axial force, there is a large frictional torque between the first cam and the second cam 2730. Therefore, the total frictional torque of the pivot device 22 formed by the frictional torque between the first cam and the second cam 2730 is large enough to enable the electronic device 100 to bend and limit at a specific angle between 70 degrees and 130 degrees, achieving the hovering function of the entire device. In addition, the pivot device 22 has a robust structure, improving the overall strength of the electronic device 100.

[0119] Please refer to the following: Figures 27-28 In another embodiment of this application, the structure of the rotating shaft device 22a is similar to that of the rotating shaft device 22 in one of the above embodiments, except that: the second rotating member 255 of the rotating shaft device 22a is connected to the corresponding side support member 233 through a cooperation of a second limiting groove and a second limiting part. The second limiting groove is provided in one of the second rotating member 255 and the side support member 233, and the second limiting part is provided in the other of the second rotating member 255 and the side support member 233. In this embodiment, a limiting block 2335 protrudes from the back surface 2332 of the side support member 233 corresponding to the second rotating member 255. The limiting block 2335 has an arc-shaped second limiting groove 2337, which penetrates the two opposite sides of the limiting block 2335 and bends and extends towards the side closer to the positioning seat 251. The second rotating member 255 has a second limiting part 2550 on its surface facing the limiting block 2335. The second limiting part 2550 is slidably and rotatably inserted into the second limiting groove 2337. During the folding or flattening process, the second limiting part 2550 slides and rotates along the second limiting groove 2337 of the rotating shaft device 22a.

[0120] Preferably, the second limiting groove 2337 includes a first limiting segment 2337a and a second limiting segment 2337b located at opposite ends thereof. The first limiting segment 2337a is further away from the positioning seat 251 than the second limiting segment 2337b. The second limiting part 2550 is a second limiting post passing through the second limiting groove 2337. The second limiting post is located at the end of the second rotating member 255 away from the positioning seat 251, and the axis of the second limiting post is parallel to the second rotation axis C2. When the two side supports 233 are in a flattened state, the second limiting post is positioned at the first limiting segment 2337a to prevent the side supports 233 from folding back and damaging the flexible screen 30. When the two side supports 233 are in a fully folded state, the second limiting post is positioned at the second limiting segment 2337b to prevent the side supports 233 from folding further and damaging the flexible screen 30. During the bending process of the rotating shaft device 22a, the second limiting part 2550 on the second rotating member 255 slides and rotates in the second limiting groove 2337, and the second limiting part 2550 moves from the first limiting section 2337a to the second limiting section 2337b; during the flattening process of the rotating device 22a, the second limiting part 2550 on the second rotating member 255 slides and rotates in the second limiting groove 2337, and the second limiting part 2550 moves from the second limiting section 2337b to the first limiting section 2337a.

[0121] In some embodiments, the second limiting portion 2550 on the second rotating member 255 and the second limiting groove 2337 on the side support member 233 can be interchanged. Specifically, the second limiting groove is provided on the side of the second rotating member 255 facing the limiting block 2335, and the limiting block 2335 of the side support member 233 is provided with a second limiting post that can be movably inserted into the second limiting groove. During the bending or unfolding process of the rotating shaft device 22a, the second limiting post slides and rotates in the second limiting groove.

[0122] This application also provides an electronic device equipped with a rotating shaft device 22a, the electronic device including a rotating device 22a, two frames connected to connectors 256 on opposite sides of the rotating shaft device 22a, and a flexible screen 30 covering the frames and the rotating shaft device 22a.

[0123] Please refer to the following: Figures 29-30The structure of the rotating shaft device 22b in another embodiment of this application is similar to that of the rotating shaft device 22 in one of the above embodiments, except that: the rotating shaft device 22b and the first rotating member 254 are connected to the side support member 233 through a first limiting groove and a first limiting part, the first limiting groove being provided in one of the first rotating member 254 and the side support member 233, and the first limiting part being provided in the other of the first rotating member 254 and the side support member 233; and the second rotating member 255 and the side support member 233 are connected through a second limiting groove and a second limiting part, the second limiting groove being provided in one of the second rotating member 255 and the side support member 233, and the second limiting part being provided in the other of the second rotating member 255 and the side support member 233. In this embodiment, the back surface 2332 of the side support member 233 is provided with limiting blocks 2335 corresponding to the first rotating member 254 and the second rotating member 255, respectively. The limiting block 2335 corresponding to the first rotating member 254 has an arc-shaped first limiting groove 2336, which penetrates the two opposite sides of the limiting block 2335 and bends and extends towards the side closer to the positioning seat 251. The limiting block 2335 corresponding to the second rotating member 255 has an arc-shaped second limiting groove 2337, which penetrates the two opposite sides of the limiting block 2335 and bends and extends towards the side closer to the positioning seat 251. The first rotating member 254 has a first limiting part 2540 in the first limiting groove 2336 corresponding to the first rotating member 254. The first limiting part 2540 is slidably and rotatably inserted into the corresponding first limiting groove 2336. The second rotating member 255 has a second limiting part 2550 in the second limiting groove 2337 corresponding to the second limiting groove 2337. The second limiting part 2550 is slidably and rotatably inserted into the corresponding second limiting groove 2337. During the folding or flattening process, the first limiting part 2540 slides and rotates along the corresponding first limiting groove 2336, and the second limiting part 2550 slides and rotates along the corresponding second limiting groove 2337.

[0124] Preferably, the first limiting groove 2336 includes a first limiting segment 2336a and a second limiting segment 2336b located at opposite ends thereof, with the first limiting segment 2336a being further away from the positioning seat 251 than the second limiting segment 2336b; the second limiting groove 2337 includes a first limiting segment 2337a and a second limiting segment 2337b located at opposite ends thereof, with the first limiting segment 2337a being further away from the positioning seat 251 than the second limiting segment 2337b. The first limiting part 2540 is a first limiting post passing through the corresponding first limiting groove 2336, and the second limiting part 2550 is a second limiting post passing through the corresponding second limiting groove 2337. The first rotating member 254 has a first limiting post at one end away from the positioning seat 251, and the second rotating member 255 has a second limiting post at one end away from the positioning seat 251. The side support member 233 has a first limiting groove 2336 and a second limiting groove 2337 corresponding to the first limiting post and the second limiting post, respectively. The first limiting post and the second limiting post pass through the first limiting groove 2336 and the second limiting groove 2337, respectively. The axis of the first limiting post is parallel to the first rotation axis C1, and the axis of the second limiting post is parallel to the second rotation axis C2. When the two side supports 233 are in a flattened state, the first limiting post and the second limiting post are respectively positioned at the first limiting segment 2336a of the first limiting groove 2336 and the first limiting segment 2337a of the second limiting groove 2337 to prevent the side supports 233 from folding back and damaging the flexible screen 30; when the two side supports 233 are in a fully folded state, the first limiting post and the second limiting post are respectively positioned at the second limiting segment 2336b of the first limiting groove 2336 and the second limiting segment 2337b of the second limiting groove 2337 to prevent the side supports 233 from folding further and damaging the flexible screen 30.

[0125] During the bending process of the rotating shaft device 22b, the first limiting part 2540 on the first rotating member 254 slides and rotates in the first limiting groove 2336, and the first limiting part 2540 moves from the first limiting segment 2336a to the second limiting segment 2336b; at the same time, the second limiting part 2550 on the second rotating member 255 slides and rotates in the second limiting groove 2337, and the second limiting part 2550 moves from the first limiting segment 2337a to the second limiting segment 2337b. During the flattening process of the rotating device 22b, the first limiting part 2540 on the first rotating member 254 slides and rotates in the first limiting groove 2336, and the first limiting part 2540 moves from the second limiting segment 2336b to the first limiting segment 2336a; at the same time, the second limiting part 2550 on the second rotating member 255 slides and rotates in the second limiting groove 2337, and the second limiting part 2550 moves from the second limiting segment 2337b to the first limiting segment 2337a.

[0126] In some embodiments, the first limiting portion 2540 on the first rotating member 254 and the first limiting groove 2336 on the side support member 233 are interchangeable. Specifically, the first limiting groove is provided on the side of the first rotating member 254 facing the limiting block 2335, and the limiting block 2335 of the side support member 233 is provided with a first limiting post that can be movably inserted into the first limiting groove. During the bending or unfolding process of the rotating shaft device 22b, the first limiting post slides in the first limiting groove and... Rotation; and / or the second limiting part 2550 on the second rotating member 255 and the second limiting groove 2337 on the side support member 233 can be interchanged. Specifically, the second limiting groove is provided on the side of the second rotating member 255 facing the limiting block 2335, and the limiting block 2335 of the side support member 233 is provided with a second limiting post that can be movably inserted into the second limiting groove. During the bending or unfolding process of the rotating shaft device 22b, the second limiting post slides and rotates in the second limiting groove.

[0127] This application also provides an electronic device equipped with a rotating device 22b, the electronic device including a rotating device 22b, two frames connected to connectors 256 on opposite sides of the rotating device 22b, and a flexible screen 30 covering the frames and the rotating device 22b.

[0128] The above are the embodiments of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the embodiments of the present invention, and these improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. A rotating shaft device, characterized in that, The rotating shaft device includes: The support mechanism includes two side support members; and A rotating assembly includes a positioning seat and rotating mechanisms disposed on opposite sides of the positioning seat. The rotating mechanisms include a first rotating member, a second rotating member, and a connecting member. One end of the first rotating member is rotatably connected to the positioning seat, and the other end of the first rotating member away from the positioning seat is rotatably connected to the connecting member. One end of the second rotating member is rotatably connected to the positioning seat, and the other end of the second rotating member away from the positioning seat is rotatably connected to the connecting member. A first rotation axis between the first rotating member and the connecting member is parallel to and spaced apart from a second rotation axis between the second rotating member and the connecting member. The side support is rotatably connected to the connector, and the first rotating member and / or the second rotating member is movably connected to the side support. When the two connectors approach each other, the first rotating member and the second rotating member rotate relative to the positioning seat and the connector to approach each other, and the first rotating member and the second rotating member slide and rotate relative to the side support to fold the two side support members together. When the two connectors move away from each other, the first rotating member and the second rotating member rotate relative to the positioning seat and the connector to move away from each other, and the first rotating member and the second rotating member slide and rotate relative to the side support to unfold the two side support members together.

2. The rotating shaft device according to claim 1, characterized in that, The first rotation axis between the first rotating member and the connecting member is farther away from the positioning seat than the second rotation axis between the second rotating member and the connecting member.

3. The rotating shaft device according to claim 2, characterized in that, The connector includes a connecting plate, and the first rotating member and the second rotating member are rotatably connected to the front side of the connecting plate, wherein the first rotation axis is further away from the connecting plate than the second rotation axis.

4. The rotating shaft device according to claim 1, characterized in that, The first distance between the rotation axis of the first rotating member and the positioning seat and the first rotation axis is greater than the second distance between the rotation axis of the second rotating member and the positioning seat and the second rotation axis.

5. The rotating shaft device according to claim 1, characterized in that, The first rotating member and the side support member are connected by a first limiting groove and a first limiting part. The first limiting groove is provided in one of the first rotating member and the side support member, and the first limiting part is provided in the other of the first rotating member and the side support member.

6. The rotating shaft device according to claim 1, characterized in that, The second rotating member and the side support member are connected by a second limiting groove and a second limiting part. The second limiting groove is provided in one of the second rotating member and the side support member, and the second limiting part is provided in the other of the second rotating member and the side support member.

7. The rotating shaft device according to claim 1, characterized in that, The first rotating member and the side support member are connected by a first limiting groove and a first limiting part, wherein the first limiting groove is provided in one of the first rotating member and the side support member, and the first limiting part is provided in the other of the first rotating member and the side support member; and the second rotating member and the side support member are connected by a second limiting groove and a second limiting part, wherein the second limiting groove is provided in one of the second rotating member and the side support member, and the second limiting part is provided in the other of the second rotating member and the side support member.

8. The rotating shaft device according to claim 7, characterized in that, Both the first limiting groove and the second limiting groove include a first limiting segment and a second limiting segment located at their opposite ends. The first limiting segment is further away from the positioning seat than the second limiting segment. The first limiting part is a first limiting post passing through the first limiting groove, and the second limiting part is a second limiting post passing through the second limiting groove. When the two side supports are in a fully folded state, the first limiting post and the second limiting post are respectively positioned at the second limiting segment of the first limiting groove and the second limiting segment of the second limiting groove. When the two side supports are in a flattened state, the first limiting post and the second limiting post are respectively positioned at the first limiting segment of the first limiting groove and the first limiting segment of the second limiting groove.

9. The rotating shaft device according to claim 8, characterized in that, The first limiting post is located at the end of the first rotating member away from the positioning seat, and the axis of the first limiting post is parallel to the axis of rotation of the first rotating member; the second limiting post is located at the end of the second rotating member away from the positioning seat, and the axis of the second limiting post is parallel to the axis of rotation of the second rotating member.

10. The rotating shaft device according to claim 1, characterized in that, The first rotating member and the connecting member are connected by a first connecting shaft and a first connecting hole, wherein the first connecting shaft is located in one of the first rotating member and the connecting member, and the first connecting hole is located in the other of the first rotating member and the connecting member; the second rotating member and the connecting member are connected by a second connecting shaft and a second connecting hole, wherein the second connecting shaft is located in one of the second rotating member and the connecting member, and the second connecting hole is located in the other of the second rotating member and the connecting member.

11. The rotating shaft device according to claim 1, characterized in that, The side support member away from the positioning seat is connected to the connector through a first arc groove and a first arc rail. The axis of the first arc groove is collinear with the axis of rotation between the side support member and the connector. The first arc groove is provided in one of the side support member and the connector, and the first arc rail is provided in the other of the side support member and the connector.

12. The rotating shaft device according to claim 1, characterized in that, The first rotating component and the positioning seat are connected by a second arc groove and a second arc rail, and the axis of the second arc groove is collinear with the axis of rotation between the first rotating component and the positioning seat. The second arc groove is provided in one of the positioning seat and the first rotating member, and the second arc rail is provided in the other of the positioning seat and the first rotating member.

13. The rotating shaft device according to claim 1, characterized in that, The second rotating component and the positioning seat are connected by a third arc groove and a third arc rail, and the axis of the third arc groove is collinear with the axis of rotation between the second rotating component and the positioning seat. The third arc groove is provided in one of the positioning seat and the second rotating member, and the third arc rail is provided in the other of the positioning seat and the second rotating member.

14. The rotating shaft device according to claim 1, characterized in that, The rotating shaft device further includes a linkage mechanism, which includes two rotating shafts, two linkage components respectively connected to the two rotating shafts, and a gear assembly disposed between the two linkage components. The two rotating shafts are respectively connected to one end of the positioning seat, and each linkage component has a gear meshing with the gear assembly at its end away from the connecting component.

15. The rotating shaft device according to claim 14, characterized in that, The end of the linkage component away from the positioning seat is connected to the connecting component through a guide groove and a guide part. The guide groove is provided in one of the linkage component and the connecting component, and the guide part is provided in the other of the linkage component and the connecting component.

16. The rotating shaft device according to claim 15, characterized in that, The guide groove includes a first positioning section and a second positioning section located at opposite ends. The first positioning section is further away from the positioning seat than the second positioning section. The guide part is a guide post passing through the guide groove. When the two side supports are in a fully folded state, the guide post is positioned in the second positioning section. When the two side supports are in a flattened state, the guide post is positioned in the first positioning section.

17. The rotating shaft device according to claim 14, characterized in that, The rotating shaft device further includes a limiting mechanism, which includes a pushing member, a holding member, and an elastic member disposed on the linkage member. The elastic member provides elastic force for mutual abutment between the holding member and the pushing member. The pushing member includes a first cam, and the holding member includes a second cam. The first cam and the second cam are rotatably abutting each other. The elastic member elastically pushes against the holding member. When the pushing member rotates relative to the holding member, the elastic member is elastically compressed and undergoes elastic deformation. The frictional resistance of the mutual rotation between the first cam and the second cam causes the linkage member to be positioned relative to the positioning seat, so as to realize that the side support member is positioned at a specific angle relative to the positioning seat.

18. The rotating shaft device according to claim 17, characterized in that, The supporting member and the elastic member are sleeved on the rotating shaft. The limiting mechanism also includes a positioning member located at the end of the rotating shaft away from the supporting member. The end of the elastic member away from the supporting member elastically abuts against the positioning member.

19. An electronic device, characterized in that, The electronic device includes a pivot device as described in any one of claims 1-18, a flexible screen, and two frames. Connectors on opposite sides of the pivot device are respectively connected to the two frames. Two side supports of the pivot device support the back of the flexible screen. When the two frames approach each other, the first and second rotating members of the pivot device rotate relative to the positioning seat and the connector, causing them to approach each other. The first and second rotating members slide and rotate relative to the side supports, causing the two side supports to fold together to achieve folding of the flexible screen. When the two frames move away from each other, the first and second rotating members rotate relative to the positioning seat and the connector, causing them to move away from each other. The first and second rotating members slide and rotate relative to the side supports, causing the two side supports to unfold together to achieve unfolding of the flexible screen.

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