Rotating shaft device, folding housing and electronic device

Abstract

This invention provides a rotating shaft device, comprising a support mechanism, a rotating assembly, and a linkage assembly. The support mechanism includes a side support member, which includes a side support plate. The rotating assembly includes a positioning seat, a rotating member, and a connecting member. One end of the rotating member is rotatably connected to the positioning seat, and the side of the side support member away from the positioning seat is rotatably connected to the connecting member. The rotating member is rotatably connected to the connecting member. The linkage assembly includes a linkage member, which is slidably connected to the connecting member. The side support member and the linkage member are connected by a stop groove and a stop portion, or the side support member and the rotating member are connected by a stop groove and a stop portion. The side support member and the linkage member are slidably connected to a guide portion by a limiting groove. The rotation of the connecting member can drive the rotating member and the linkage member to rotate, and the rotation of the rotating member and the linkage member drives the side support member to move. This application also provides a folding housing and an electronic device equipped with a rotating shaft device.

Description

Technical Field

[0001] This invention relates to the field of flexible component support, and more particularly to a pivot device for supporting a flexible component, a foldable housing provided with the pivot device, and an electronic device provided with the foldable housing. Background Technology

[0002] With the development of display devices, flexible, bendable displays have emerged. Currently, the folding solutions for flexible, bendable 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 quite complex and do not meet mass production requirements. Summary of the Invention

[0003] This application provides a rotating shaft device, a folding housing provided with the rotating shaft device, and an electronic device provided with the folding housing.

[0004] This application provides a rotating shaft device, comprising a support mechanism, a rotating assembly, and a linkage assembly. The support mechanism includes a side support member, which includes a side support plate. The rotating assembly includes a positioning seat, a rotating member, and a connecting member. The end of the rotating member away from the connecting member is rotatably connected to the positioning seat, and the side support member away from the positioning seat is rotatably connected to the connecting member. The linkage assembly includes a linkage member, which is slidably connected to the connecting member. The side support member and the linkage member are connected by a stop groove and a stop portion, or the side support member and the rotating member are connected by a stop groove and a stop portion. The side support member and the linkage member are slidably connected to a guide portion by a limiting groove. The rotation of the connecting member can drive the rotating member and the linkage member to rotate, and the rotation of the rotating member and the linkage member drives the side support member to move, so that the two side support members bend or unfold synchronously.

[0005] This application also provides a folding housing, which includes a pivot device and two frames. The pivot device is located between the two frames. The pivot device includes a support mechanism, a rotating assembly, and a linkage assembly. The support mechanism includes a side support member, which includes a side support plate. The rotating assembly includes a positioning seat, a rotating member, and a connecting member. The end of the rotating member away from the connecting member is rotatably connected to the positioning seat. The side support member away from the positioning seat is rotatably connected to the connecting member. The rotating member is rotatably connected to the connecting member. The two frames are respectively connected to the pivot device. The system comprises two connecting parts; the linkage assembly includes a linkage member, which is slidably connected to the connecting parts; the side support member is connected to the linkage member through a stop groove and a stop part, or the side support member is connected to the rotating member through a stop groove and a stop part; the side support member and the linkage member are slidably connected to the guide part through a limiting groove; the rotation of the connecting parts can drive the rotating member and the linkage member to rotate, and the rotation of the rotating member and the linkage member can drive the side support member to move, so that the two side support members can bend or unfold synchronously.

[0006] This application also provides an electronic device, which includes a flexible component and a folding housing. The flexible component is disposed on the folding housing. The folding housing includes a pivot device and two frames. The pivot device is located between the two frames. The pivot device includes a support mechanism, a rotating assembly, and a linkage assembly. The support mechanism includes a side support member, which includes a side support plate. The rotating assembly includes a positioning seat, a rotating component, and a connecting member. The end of the rotating component away from the connecting member is rotatably connected to the positioning seat. The side support member away from the positioning seat is rotatably connected to the connecting member. The rotating component is rotatably connected to the connecting member. The two frames are respectively connected to two connecting parts of the rotating shaft device; the linkage assembly includes a linkage member, which is slidably connected to the connecting parts; the side support member is connected to the linkage member through a stop groove and a stop part, or the side support member is connected to the rotating member through a stop groove and a stop part; the side support member and the linkage member are slidably connected to the guide part through a limiting groove; the rotation of the connecting parts can drive the rotating member and the linkage member to rotate, and the rotation of the rotating member and the linkage member can drive the side support member to move, so that the two side support members bend or unfold synchronously.

[0007] Compared to existing technologies that use hinge mechanisms to support flexible components, the rotating shaft device of this application has a simpler structure, lower manufacturing cost, and higher reliability of connections between components, resulting in improved overall strength. Furthermore, in this application, the side support and the linkage are connected via a limiting groove and a guide slide; the side support and the linkage are connected via a stop groove and a stop part; or the side support and the rotating component are connected via a stop groove and a stop part. This reduces the overall width of the rotating shaft device, thereby reducing the internal space occupied by the rotating shaft device within the housing, which is beneficial for the layout of other components such as the motherboard or battery. Attached Figure Description

[0008] 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.

[0009] Figure 1 This is a three-dimensional structural schematic diagram of an electronic device in one embodiment of this application; Figure 2 yes Figure 1 An exploded three-dimensional structural diagram of the folding housing and flexible components of an electronic device. Figure 3 yes Figure 2 An exploded view of the three-dimensional structure of the folded shell in the diagram; Figure 4 yes Figure 3 A partial three-dimensional structural diagram of the rotating shaft device in the diagram; Figure 5 yes Figure 4 A three-dimensional structural diagram of the rotating shaft device from another perspective; Figure 6 yes Figure 4 An exploded three-dimensional structural diagram of the support mechanism, rotating component, folding aid component, and back cover of the rotating shaft device. Figure 7 yes Figure 5 A three-dimensional structural diagram of the support mechanism, rotating component, folding aid component, and back cover of the rotating shaft device; Figure 8 yes Figure 6 An exploded three-dimensional structural diagram of the rotating component and the folding aid component; Figure 9 yes Figure 8 A three-dimensional structural diagram of the rotating component and the folding aid component from another perspective; Figure 10 yes Figure 8 An exploded three-dimensional structural diagram of the rotating component in the diagram; Figure 11 yes Figure 10 A three-dimensional structural diagram of the rotating component from another perspective; Figure 12 yes Figure 8 An exploded view of the three-dimensional structure of the folding aid component; Figure 13 yes Figure 9 An exploded view of the three-dimensional structure of the folding aid component; Figures 14-18 yes Figure 4 Three-dimensional sectional views of different parts of the rotating shaft device; Figure 19 yes Figure 1 A three-dimensional structural diagram of an electronic device in a bent state; Figure 20 yes Figure 19 A side view of the electronic device in the diagram. Figure 21 yes Figure 19 Enlarged three-dimensional view of the rotating shaft device in the middle; Figure 22 yes Figure 21 A magnified three-dimensional view of the rotating shaft device from another perspective; Figure 23 yes Figure 21 A schematic diagram of the end structure of the rotating shaft device in the diagram; Figures 24-28 yes Figure 21 Three-dimensional sectional views of different parts of the rotating shaft device; Figure 29 This is a partial three-dimensional schematic diagram of the rotating shaft device in another embodiment; Figure 30 yes Figure 29 An exploded three-dimensional structural diagram of the rotating shaft device in the diagram; Figure 31 yes Figure 30 A three-dimensional structural diagram of the rotating shaft device from another perspective; Figure 32 yes Figure 29 A three-dimensional structural diagram of the rotating shaft device from another perspective; Figure 33 yes Figure 29 A three-dimensional cross-sectional view of one of the rotating shaft devices in the diagram; Figure 34 yes Figure 29 A three-dimensional structural diagram of the rotating shaft device in its folded state; Figure 35 yes Figure 34 A three-dimensional cross-sectional view of one of the rotating shaft devices in the diagram; Figure 36This is a three-dimensional structural schematic diagram of the rotating shaft device in another embodiment; Figure 37 yes Figure 36 An exploded three-dimensional structural diagram of the rotating shaft device in the diagram; Figure 38 yes Figure 37 A three-dimensional structural diagram of the rotating shaft device from another perspective; Figure 39 yes Figure 36 A three-dimensional cross-sectional view of one of the rotating shaft devices in the diagram; Figure 40 yes Figure 36 A schematic diagram of the folded state of the rotating shaft device in the middle; Figure 41 yes Figure 40 A three-dimensional cross-sectional view of one of the rotating shaft devices in the diagram; Figure 42 This is an exploded three-dimensional structural diagram of the rotating shaft device in another embodiment. Detailed Implementation

[0010] 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.

[0011] 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.

[0012] 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.

[0013] Please refer to the following: Figures 1 to 7In one embodiment of the present invention, the electronic device 100 includes a folding housing 20 and a flexible component 30 disposed on the folding housing 20. The flexible component 30 can be a flexible display screen, a flexible touch screen, or a flexible touch display screen, 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 component 30 bends or flattens with the folding housing 20. The folding housing 20 includes two frames 21 and a pivot device 22 connecting the two frames 21. The flexible component 30 includes a bendable region 31 corresponding to the pivot device 22, and two non-bendable regions 33 connected to opposite sides of the bendable region 31. The two non-bendable regions 33 of the flexible component 30 can be fixed to the front surfaces of the two frames 21, and the bendable region 31 is attached to the front surface of the pivot device 22. The bendable region 31 of the flexible component 30 bends or flattens with the pivot device 22. The rotating shaft device 22 includes a support mechanism 23, a rotating mechanism 25, a folding aid assembly, and a back cover 28. The folding aid assembly includes a linkage assembly 26 and a limiting mechanism 27. The linkage assembly 26 is connected to the rotating mechanism 25, and the limiting mechanism 27 is connected to the linkage assembly 26. In this embodiment, the linkage assembly 26 is located between the rotating mechanism 25 and the limiting mechanism 27. The support mechanism 23 includes a central support member 231 and side support members 233 located on opposite sides of the central support member 231. The flexible member 30 is attached to the front of the central support member 231 and the front of the side support members 233. The rotating mechanism 25 includes a positioning seat 251 and rotating assemblies 253 located on opposite sides of the positioning seat 251. The rotating assembly 253 includes a rotating member 254 and a connecting member 256. One end of the rotating member 254 is rotatably connected to the positioning seat 251, and the other end of the rotating member 254 is rotatably connected to the connecting member 256. The linkage assembly 26 includes a linkage seat 261 and a linkage mechanism 263 connected to 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 connected to the connector 256. The side support member 233 and the linkage member 264 are connected to the first guide slide 2640 through the limiting slide groove 2330. The connector 256 rotates relative to the positioning seat 251 to drive the rotating member 254 to rotate relative to the positioning seat 251 and the linkage member 264 to rotate relative to the linkage seat 261. The rotation of the rotating member 254 and the linkage member 264 drives the side support member 233 to move so that the two side support members 233 bend or unfold synchronously.

[0014] 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 rotating component 254 to rotate relative to the positioning seat 251 through the connectors 256. The rotation of the connectors 256 and the rotating component 254 drives the linkage component 264 to rotate relative to the linkage seat 261, so that the two side support components 233 of the support mechanism 23 can be bent or unfolded synchronously with the rotating component 253 and the linkage mechanism 263. The flexible component 30 bends or flattens with the side support component 233, and the bendable area 31 can be bent into a teardrop shape.

[0015] In this embodiment, the front side refers to the side facing the same direction as the light-emitting surface of the flexible component 30, and the back side refers to the side facing away from the light-emitting surface of the flexible component 30. The electronic device 100 is, for example, but not limited to, mobile phones, tablets, displays, 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 integrally formed and connected, while a non-integrated connection means that A and B are not integrally formed and connected.

[0016] The rotating shaft device 22 of the electronic device 100 of the present invention includes a support mechanism 23, a rotating mechanism 25, and a linkage assembly 26. One end of the rotating member 254 of the rotating assembly 253 is rotatably connected to the positioning seat 251, and the other end of the rotating member 254 is rotatably connected to the connecting member 256. The end of the linkage member 264 of the linkage assembly 26 away from the linkage seat 261 is slidably connected to the connecting member 256. The side support member 233 and the linkage member 264 are connected to the first guide slide 2640 through the limiting slide groove 2330. The side support member 233 and the corresponding connecting member 256 are rotatably connected. During the process of the two frames 21 moving closer or further apart, the connecting member 256 drives the rotating member 254 to rotate relative to the positioning seat 251, and the two connecting members 256 drive the linkage member 264 to rotate synchronously relative to the linkage seat 261. The connecting member 256 and the linkage member 264 drive the two side support members 233 to fold or unfold synchronously, thereby realizing the folding or flattening of the flexible member 30. Since the pivot device 22 can achieve synchronous folding or synchronous flattening through the support mechanism 23, the rotation mechanism 25 and the linkage component 26, compared with the prior art which supports flexible parts through a hinge mechanism, the pivot device 22 of this application has a simple structure, lower manufacturing cost, and high reliability of the connection between the components, thus improving the overall strength of the machine. Secondly, in this application, the side support component 233 and the linkage component 264 are connected by the cooperation of the limiting slide groove 2330 and the first guide slide 2640, which reduces the overall width of the pivot device 22, thereby reducing the internal space occupied by the pivot device 22 in the folding shell 20, which is beneficial to the layout of other components such as the motherboard or battery.

[0017] The rotating shaft device 22 in this embodiment includes a support mechanism 23, two rotating mechanisms 25, two linkage components 26, and two limiting mechanisms 27. One rotating mechanism 25 is connected to one linkage component 26 and one limiting mechanism 27 to form a combined structure, and the other rotating mechanism 25 is connected to another linkage component 26 and another limiting mechanism 27 to form a combined structure. The two combined structures are connected to the back of the support mechanism 23 at intervals.

[0018] In some embodiments, the rotating shaft device 22 may also include a support mechanism 23, a rotating mechanism 25, a linkage component 26 and a limiting mechanism 27, wherein the rotating mechanism 25, the linkage component 26 and the limiting mechanism 27 are connected to form a combined structure, and the combined structure is connected to the back of the support mechanism 23.

[0019] In some embodiments, the rotating shaft device 22 may also include a support mechanism 23, three or more rotating mechanisms 25, three or more linkage components 26, and three or more limiting mechanisms 27. The three or more rotating mechanisms 25 are disposed on the back of the support mechanism 23 and are arranged at intervals along the length direction of the support mechanism 23. The three or more linkage components 26 are respectively connected to the three or more rotating mechanisms 25, and the three or more limiting mechanisms 27 are respectively connected to the three or more linkage components 26.

[0020] like Figures 1 to 3 As shown, the connecting parts 256 on opposite sides of the rotating shaft device 22 are fixedly connected to the two frames 21 respectively. The connecting parts 256 and the frames 21 can be fixed by, but not limited to, screws, snaps, or adhesives. When one frame 21 is folded or unfolded relative to the other frame 21, it can drive the corresponding rotating component 253 to rotate relative to the positioning seat 251. The rotating component 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 and the middle support member 231 are simultaneously bent into a teardrop shape or simultaneously unfolded into a horizontal shape. The bendable area 31 of the flexible part 30 is folded into a teardrop shape or unfolded into a horizontal shape along with the bendable area 31.

[0021] like Figure 3 As shown, the frame 21 includes a first front face 211, a first back face 213, two opposing first side faces 214, and two end faces 215. A pivot device 22 connects the two end faces 215 of the two frames 21. The non-bending area 33 of the flexible member 30 is connected to the first front face 211 of the frame 21. Each frame 21 has a first receiving groove 216 on its end face 215 facing the pivot device 22. The first receiving groove 216 passes through the first front face 211 of the frame 21, and its opposing ends extend to the two opposing first side faces 214 of the frame 21. The opposing sides of the pivot device 22 are respectively accommodated in the first receiving grooves 216 of the two frames 21, and each connector 256 is fixedly connected to the corresponding frame 21. The first 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.

[0022] like Figures 4-7 As shown, the central support member 231 is a rectangular support plate, which includes a front side 2311 and a back side 2312 facing away from the front side 2311. A countersunk hole 2313 is provided on the front side 2311 of the central support member 231, and the countersunk hole 2313 passes through the back side 2312. A raised ring 2315 is provided around the countersunk hole 2313 on the back side 2312 of the central support member 231. Alternating grooves 2316 are provided on opposite sides of the central support member 231.

[0023] The side support member 233 includes a side support plate 2331. The side of the side support plate 2331 away from the positioning seat 251 is rotatably connected to the connecting member 256. A limiting groove 2330 is provided on the side of the side support plate 2331 near the positioning seat 251. The linkage member 264 is provided with a first guide part 2640 that slides through the limiting groove 2330. Specifically, the side support member 233 includes a rectangular side support plate 2331. The side of the side support member 233 away from the positioning seat 251 is connected to the connecting member 256 through a first arc groove and a first arc rail. The side support member 233 includes a second front face 2332 and a second back face 2333 facing away from the second front face 2332. The side support member 233 is provided with a rotating part 2334. In this embodiment, the rotating part 2334 is provided with a first arc groove 2335, and the connecting member 256 is provided with a first arc rail 2562 that can be slidably inserted into the first arc groove 2335. The axis of the first arc groove 2335 is collinear with the axis of rotation between the side support member 233 and the connecting member 256. The second back surface 2333 of the side support member 233, away from the middle support member 231, has rotating parts 2334 protruding from opposite ends of the connecting member 256. Each rotating part 2334 is an arc-shaped block, and the first arc groove 2335 is formed on the side of the rotating part 2334 facing the connecting member 256. One end of the first arc groove 2335 passes through the rotating part 2334 away from the surface of the middle support member 231, and the other end of the first arc groove 2335 extends to the second back surface 2333 of the side support member 233; the first arc groove 2335 bends away from the second back surface 2333, specifically, the middle part of the first arc groove 2335 bends away from the second back surface 2333.

[0024] In this embodiment, the rotating part 2334 is a protrusion fixedly connected to the side support plate 2331. The fixed connection includes, but is not limited to, screw fixing, snap fixing, or adhesive fixing. The two rotating parts 2334 have two facing sides each provided with a first arc groove 2335. The axes of the two first arc grooves 2335 are collinear, and one end of the first arc groove 2335 penetrates the surface of the rotating part 2334 away from the surface of the central support member 231. In some embodiments, the rotating part 2334 and the side support plate 2331 can also be integrally formed.

[0025] In some embodiments, the two rotating parts 2334 have two opposite sides respectively provided with a first arc groove 2335. The axis lines of the two first arc grooves 2335 are collinear. One end of the first arc groove 2335 penetrates the surface of the rotating part 2334 away from the middle support member 231. The first arc groove 2335 bends away from the second back side 2333, that is, the middle part of the first arc groove 2335 bends away from the second back side 2333. The two opposite ends of the connector 256 are respectively provided with a first arc rail 2562 rotatably accommodated in the two first arc grooves 2335.

[0026] In some embodiments, one of the opposite sides of one rotating part 2334 is provided with a first arc groove 2335, and the other rotating part 2334 is provided with a first arc groove 2335 on one of the opposite sides, and the axis lines of the two first arc grooves 2335 are collinear. The two opposite ends of the connector 256 are respectively provided with first arc rails 2562 that are rotatably accommodated in the two first arc grooves 2335.

[0027] In some embodiments, the connector 256 has a first arc groove at each of its opposite ends on the side away from the positioning seat 251, and the first arc groove is bent toward the side away from the side support plate 2331; the axis lines of the two first arc grooves are collinear; the side support 233 has a first arc rail at each of its opposite ends on the side away from the positioning seat 251, which is rotatably accommodated in the first arc groove.

[0028] like Figure 7As shown, a limiting part 2336 is provided on the side of the second back surface 2333 of the side support member 233 near the middle support member 231 between the two rotating parts 2334. A limiting groove 2330 is provided on the limiting part 2336, and the limiting groove 2330 may or may not penetrate the opposite sides of the limiting part 2336. Specifically, the limiting part 2336 is a circular limiting plate, and the limiting groove 2330 is provided on the side of the limiting part 2336. In this embodiment, the limiting groove 2330 of the limiting part 2336 on one side support member 233 penetrates the opposite sides of the limiting part 2336, while the limiting groove 2330 of the limiting part 2336 on the other side support member 233 does not penetrate the opposite sides of the limiting part 2336. The limiting groove 2330 extends from the side near the central support member 231 to the side away from the central support member 231; that is, the first end of the limiting groove 2330 is close to the central support member 231, and the opposite second end of the limiting groove 2330 is away from the central support member 231, and the first end is closer to the second back surface 2333 than the second end. The first guide portion 2640 of the linkage member 264 can slide in the limiting groove 2330, and the first guide portion 2640 can be positioned at the first end or the second end of the limiting groove 2330. In this embodiment, the limiting portion 2336 and the rotating portion 2334 near the linkage member 264 are an integral structure, and the integral structure is the support frame of the side support member 233. The limiting portion 2336 and the side support member 233 can be fixed by, but not limited to, screwing, snapping, or gluing. In other embodiments, the limiting portion 2336 and the side support member 233 can be an integrally formed structure.

[0029] The limiting slide 2330 includes a first limiting section 2330a and a second limiting section 2330b located at opposite ends, and a guide slide section 2330c located between the first limiting section 2330a and the second limiting section 2330b. The first limiting section 2330a is located on the side closer to the central support member 231, and the second limiting section 2330b is located on the side farther from the central support member 231. The first limiting section 2330a, the guide slide section 2330c, and the second limiting section 2330b are interconnected. When the two side supports 233 are in a fully folded state, the first guide slide section 2640 is positioned at the first limiting section 2330a to prevent the side supports 233 from folding further. When the two side supports 233 are in a flattened state, the first guide slide section 2640 is positioned at the second limiting section 2330b to prevent the side supports 233 from flattening further. In this embodiment, the limiting slide 2330 is an arc-shaped groove, and the limiting slide 2330 bends away from the second back surface 2333; specifically, the guide slide 2330c bends away from the second back surface 2333.

[0030] like Figure 7As shown, a first guide groove 2337 is provided on the outer peripheral surface of a limiting portion 2336 on one side support plate 2331, away from the second back surface 2333. The two opposite ends of the first guide groove 2337 pass through the opposite end surfaces of the limiting portion 2336. The first guide groove 2337 is parallel to the limiting groove 2330. The limiting portion 2336 forms a first stop portion 2337a and a second stop portion 2337b at the opposite ends of the first guide groove 2337. The first stop portion 2337a is located at the end closer to the middle support member 231, and the second stop portion 2337b is located at the end away from the middle support member 231. The linkage 264 is provided with a second guide part 2641 corresponding to the first guide groove 2337; when the two side supports 233 are in a fully folded state, the second guide part 2641 is positioned at the first stop part 2337a to prevent the side supports 233 from folding further; when the two side supports 233 are in a flattened state, the second guide part 2641 is positioned at the second stop part 2337b to prevent the side supports 233 from flattening further.

[0031] In some embodiments, each side support member 233 has a limiting groove 2330 and a first guide groove 2337 on its limiting portion 2336. Each linkage member 264 has a first guide portion 2640 and a second guide portion 2641 corresponding to the limiting groove 2330 and the first guide groove 2337, respectively. That is, the first guide portion 2640 and the second guide portion are slidably accommodated in the limiting groove 2330 and the first guide groove 2337, respectively. When the two side supports members 233 are in a fully folded state, the first guide portion 2640 and the second guide portion 2641 are respectively positioned at the first limiting section 2330a and the first stop portion 2337a to prevent the side supports members 233 from folding further. When the two side supports members 233 are in a flattened state, the first guide portion 2640 and the second guide portion 2641 are respectively positioned at the second limiting section 2330a. b and the second stop 2337b, to prevent the side support 233 from flattening further.

[0032] In some embodiments, one of the limiting groove 2330 and the first guide groove 2337 on the limiting portion 2336 of the side support 233 is omitted, and one of the first guide portion 2640 and the second guide portion 2641 of the linkage 264 is omitted. Specifically, if the limiting portion 2336 is provided with a limiting groove 2330, the linkage 264 is provided with a first guide portion 2640 that is slidably accommodated in the limiting groove 2330; if the limiting portion 2336 is provided with a first guide groove 2337, the linkage 264 is provided with a second guide portion 2641 that is slidably accommodated in the first guide groove 2337.

[0033] Please refer to the following: Figures 6-11The rotating member 254 is rotatably connected to the positioning seat 251 at the end away from the connecting member 256, and the side support member 233 is rotatably connected to the connecting member 256 at the side away from the central support member 231; the linkage assembly 26 is connected between the positioning seat 251 and the two connecting members 256. The side support member 233 and the connecting member 256 are rotatably connected through the cooperation of the first arc groove 2335 and the first arc rail 2562; the positioning seat 251 and the rotating member 254 are rotatably connected through the cooperation of the second arc groove 2511 and the second arc rail 2541. In this embodiment, the first arc rails 2562 at both ends of the connector 256 are rotatably inserted into the two first arc grooves 2335 of the corresponding side support member 233, so that the connector 256 and the side support member 233 can rotate relative to each other along the first arc grooves 2335. The axis of the first arc rail 2562 is collinear with the axis of the first arc groove 2335, and the axis of the first arc rail 2562 is collinear with the axis of rotation between the side support member 233 and the connector 256. The positioning seat 251 is provided with a second arc groove 2511, and the rotating member 254 is provided with a second arc rail 2541 corresponding to the second arc groove 2511, so that the connecting member 256 and the positioning seat 251 can rotate relative to each other along the second arc groove 2511. The axis of the second arc groove 2511 is collinear with the axis of the second arc rail 2541, and the axis of the second arc rail 2541 is collinear with the axis of rotation between the rotating member 254 and the positioning seat 251.

[0034] Specifically, the positioning seat 251 includes a first seat body 251a and a second seat body 251b connected to the first seat body 251a. The end of the rotating member 254 away from the connecting member 256 is rotatably connected between the first seat body 251a and the second seat body 251b. Specifically, the first seat body 251a and the second seat body 251b are respectively provided with a second arc groove 2511, and the second arc rail 2541 of the rotating member 254 is rotatably received in the second arc groove 2511. The first base 251a includes a third front surface 2512, a back surface opposite to the third front surface 2512, two opposing third side surfaces 2513, and opposing end surfaces. The two opposing third side surfaces 2513 of the first base 251a each have two second arcuate grooves 2511. The two opposite ends of each second arcuate groove 2511 pass through the third front surface 2512. The axis lines of the two second arcuate grooves 2511 on the same third side surface 2513 are parallel, and the axis lines of the two second arcuate grooves 2511 at the same end of the two third side surfaces 2513 are collinear. The opposing ends of the third front surface 2512 of the first base 251a each have positioning grooves 2514. One end of each positioning groove 2514 connects to the two second arcuate grooves 2511 at the same end. The first base 251a has a connecting hole 2515 on the bottom surface near the middle of each positioning groove 2514. The third side surface 2513 of the first base 251a facing the second base 251b has a snap-fit ​​hole 2516. The second seat 251b includes a third front face 2512, a back face opposite to the third front face 2512, two opposing third side faces 2513, and opposing end faces. A receiving space is provided on the side of the second seat 251b facing the third side face 2513 of the first seat 251a, near the third front face 2512. This receiving space is used to accommodate the first seat 251a. Two second arcuate grooves 2511 are formed on the side of the receiving space of the second seat 251b. The centerlines of the two second arcuate grooves 2511 are parallel. After the first seat 251a and the second seat 251b are connected, the two second arcuate grooves 2511 of the second seat 251b are respectively aligned with the two second arcuate grooves 2511 on the same side of the first seat 251a. A connecting hole 2515 is provided on the bottom surface of the receiving space of the second seat 251b. A locking fastener, such as a screw, passes through the connecting hole 2515 and is connected to the back cover 28, so that the positioning seat 251 is connected to the back cover 28. The second seat 251b has a retaining post 2517 on its third side 2513 facing the first seat 251a. The second seat 251b has connecting grooves 2518 at opposite ends and a connecting hole 2515 in the middle on its third side 2513 away from the first seat 251a. A cover plate extends from the third front side 2512 of the second seat 251b toward the side away from the retaining post 2517.

[0035] The positioning base 251 also includes two stop members 252, which are used to prevent the second arc track 2541 from disengaging from the corresponding second arc groove 2511. Each stop member 252 includes a positioning portion 2521 and a stop portion 2523 connected to one end of the positioning portion 2521; the positioning portion 2521 is a positioning ring, and the stop portion 2523 is a stop strip disposed on the outer periphery of the positioning ring, with the opposite ends of the stop strip extending out of the positioning portion 2521. The positioning base 251 also includes two locking fasteners 2525 for connecting the two stop members 252 to the first base body 251a respectively.

[0036] The rotating component 254 includes a first rotating part 2540, a second rotating part 2542, and a connecting part 2543 connecting the first rotating part 2540 and the second rotating part 2542. The first rotating part 2540 is rotatably connected to the positioning seat 251, and the second rotating part 2542 is rotatably connected to the corresponding connecting component 256. The first rotating part 2540 is provided with a second arc track 2541, and the second rotating part 2542 and the connecting component 256 are rotatably connected via a pivot. The first rotating part 2540 includes a rotating bar protruding from the connecting part 2543 on the side opposite to the second rotating part 2542, and the second arc track 2541 is provided on the side of the rotating bar. In this embodiment, the connecting part 2543 has rotating bars protruding from its opposite ends on the side away from the second rotating part 2542. The two rotating bars are spaced apart from each other, and the opposite sides of the two rotating bars are provided with second arc rails 2541. The axes of the two second arc rails 2541 are collinear. A stop block 2544 protrudes from the end of each second arc rail 2541 away from the connecting part 2543 along the axis of the second arc rail 2541. One rotating bar has a second arc rail 2541 on its side away from the other rotating bar, and the axes of the three second arc rails 2541 on the rotating part 254 are collinear. The second rotating part 2542 has a shaft hole 2546 along the axis parallel to the axis of the second arc rail 2541. In this embodiment, the second rotating part 2542 is a rotating cylinder, and the axis of the rotating cylinder is parallel to the axis of the second arc rail 2541. The middle part of the second rotating part 2542 has a mating groove 2547.

[0037] In some embodiments, the second arc groove 2511 on the positioning seat 251 and the second arc rail 2541 on the rotating member 254 can be interchanged; for example, an arc groove can be formed on the side of the first rotating part 2540, 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 center line of the arc groove, the center line of the arc rail, and the rotation axis between the rotating member 254 and the positioning seat 251 are collinear.

[0038] The connector 256 is strip-shaped. Specifically, the connector 256 includes a rectangular connecting plate 2560, with first arc-shaped rails 2562 at opposite ends. One end of the front of the connecting plate 2560 has two spaced-apart receiving openings 2561. A mating block 2563 is formed between the two receiving openings 2561. The mating block 2563 is accommodated in the mating groove 2547 of the rotating part 254, allowing the second rotating part 2542 to be rotatably connected to the mating block 2563. The mating block 2563 has a shaft hole 2564 along a direction parallel to the axis of the first arc-shaped rails 2562. The shaft hole 2564 passes through the end face of the connecting plate 2560 near the mating block 2563 and is used to insert a rotating shaft 2565. The end of the connecting plate 2560 away from the mating block 2563 is provided with a guide space 2566 along the axis of the first circular arc rail 2562 perpendicular to the axis of rotation. The guide space 2566 passes through the two opposite sides of the connecting plate 2560. The connecting plate 2560 is provided with guide strips 2567 on the opposite sides of the guide space 2566. The side of the guide strip 2567 facing the guide space 2566 is provided with a second guide groove 2568 along the axis of rotation perpendicular to the first circular arc rail 2562. That is, the second guide groove 2568 extends along the axis of rotation perpendicular to the axis of rotation between the linkage 264 and the linkage seat 261.

[0039] Please refer to the following: Figures 6-9 and Figures 12-13 The linkage assembly 26 also includes a gear assembly 265 and two rotating shafts 266. The gear assembly 265 is mounted on the rotating shafts 266, and two linkage members 264 are respectively fixedly sleeved on the two rotating shafts 266. The two rotating shafts 266 are rotatably inserted into opposite ends of the linkage seat 261. Each linkage member 264 and its corresponding rotating shaft 266 rotate together. The linkage member 264 rotates along the axis of its corresponding rotating shaft 266 to drive the rotating shaft 266 to rotate. The two linkage members 264 achieve synchronous folding or synchronous flattening through the gear assembly 265. The linkage seat 261 includes a rectangular connecting plate 2610 and an extension plate 2611 connected to the connecting plate 2610. The extension plate 2611 extends from the center of the front of the connecting plate 2610 along a length direction perpendicular to the connecting plate 2610. The connecting plate 2610 has shaft holes 2613 at its opposite ends, which pass through the opposite sides of the connecting plate 2610 along the axis of rotation of the shaft 266. The connecting plate 2610 has two spaced-apart connecting holes 2615 between the two shaft holes 2613, with the axis of the connecting holes 2615 parallel to the axis of the shaft holes 2613. The connecting plate 2610 has an arc-shaped stop strip 2616 around each shaft hole 2613 on the side where the extension plate 2611 is located.

[0040] The linkage 264 includes a sleeve 2642 and a connecting rod 2643 connected to the outer peripheral wall of the sleeve 2642. The sleeve 2642 has a connecting hole 2644 along its axial direction, and the rotating shaft 266 is inserted into the connecting hole 2644. In this embodiment, the connecting hole 2644 passes through the two opposite ends of the sleeve 2642, and the radial cross-section of the connecting hole 2644 is waist-shaped. In other embodiments, the radial cross-section of the connecting hole 2644 can be, but is not limited to, a rectangular surface, a polygonal surface, etc. A stop block 2645 protrudes from the end face of the sleeve 2642 facing the connecting plate 2610 on the upper side of the connecting hole 2644. The stop block 2645 is used to correspond to the corresponding arc-shaped stop strip 2616. The connecting rod 2643 is a rectangular plate. One end of the connecting rod 2643 away from the sleeve 2642 has a guide opening 2646 along the axial direction perpendicular to the sleeve 2642. One connecting rod 2643 has a first guide portion 2640 on one inner side of the guide opening 2646, and a second guide portion 2641 on the opposite inner side. The other connecting rod 2643 has first guide portions 2640 on both opposite inner sides of the guide opening 2646. In this embodiment, the first guide portion 2640 is a connecting shaft inserted into the connecting rod 2643, and the second guide portion 2641 is a guide slider. The end of the linkage 264 away from the linkage seat is slidably inserted into the second guide groove 2568. Specifically, guide strips 2647 are provided on opposite sides of the connecting rod 2643. The guide strips 2647 extend along the length direction parallel to the guide opening 2646 and can be slidably inserted into the second guide groove 2568 of the connector 256.

[0041] Each linkage 264 is connected to a pusher 271. Specifically, the pusher 271 is a sleeve connected to the end of the sleeve 2642 opposite to the linkage seat 261. The pusher 271 includes a first cam 2710, which is disposed on the end face of the sleeve opposite to the linkage seat 261. The first cam 2710 is sleeved on the rotating shaft 266, and the axis of the first cam 2710 is coaxial with that of the sleeve 2642. The axis of the first gear 2651 is coaxial with that of the sleeve 2642. The first cam 2710 includes a concave-convex surface disposed at one end of the sleeve. The concave-convex surface includes a first protrusion 2712 and a first recess 2714, which are arranged sequentially at intervals along the circumference of the sleeve. The number of first protrusions 2712 and the number of first recesses 2714 can be set as needed. For example, the first cam 2710 may include one first protrusion 2712 and one first recess 2714, two first protrusions 2712 and two first recesses 2714, three first protrusions 2712 and three first recesses 2714, or four first protrusions 2712 and four first recesses 2714, etc. In this embodiment, the first cam 2710 includes three first protrusions 2712 and three first recesses 2714 arranged circumferentially along the sleeve.

[0042] The gear assembly 265 includes two first gears 2651 fixedly sleeved at the same end of two rotating shafts 266 and two meshing second gears 2652. The two second gears 2652 mesh with the two first gears 2651, and the shafts of the second gears 2652 extend from their opposite end faces. In this embodiment, the two second gears 2652 are located between the two first gears 2651, and the outer diameter and number of teeth of the second gears 2652 are the same as those of the first gears 2651. The centerlines of the two first gears 2651 are parallel to the centerlines of the two second gears 2652; preferably, the centerlines of the two first gears 2651 and the centerlines of the two second gears 2652 are coplanar. In other embodiments, the outer diameter of the second gear 2652 is smaller than the outer diameter of the first gear 2651, and the number of teeth of the second gear 2652 around a circle is less than the number of teeth of the first gear 2651 around a circle. This reduces the overall width of the linkage assembly 26, thereby reducing the overall width of the rotating shaft device 22, reducing the space occupied in the folding housing 20, and facilitating the layout of other components such as the motherboard or battery.

[0043] like Figure 12 and Figure 13 As shown, the rotating shaft 266 includes a shaft body 2660 and a positioning cover 2662 located at one end of the shaft body 2660. A first gear 2651 is fixedly sleeved on the end of the shaft body 2660 where the positioning cover 2662 is located. A connecting rod 2664 is provided between the positioning cover 2662 and the first gear 2651. A positioning part 2665 is provided on the outer peripheral surface of the shaft body 2660 near the first gear 2651, and a positioning surface 2666 is provided on the outer peripheral surface of the end of the shaft body 2660 away from the first gear 2651. The positioning part 2665 is used to position the sleeve 2642 of the linkage member 264. In this embodiment, the radial cross-section of the end of the shaft body 2660 away from the first gear 2651 is an oblong surface, and the positioning surface 2666 is a straight surface on the end of the shaft body 2660 away from the first gear 2651. In other embodiments, the radial cross-section of the end of the shaft body 2660 away from the first gear 2651 can be, but is not limited to, a rectangular surface or a polygonal surface. The end of the shaft 2660 away from the positioning cover 2662 is provided with a slot 2667. The slot 2667 is located on the outer peripheral wall of the shaft 2660 and surrounds the shaft 2660 in a circle.

[0044] The limiting mechanism 27 also includes a supporting member 273 and an elastic member 274 sleeved on the rotating shaft 266. The elastic member 274 provides elastic force between the supporting member 273 and the pushing member 271. The rotating mechanism 25 rotates relative to the positioning seat 251 through the linkage mechanism 263, and the pushing member 271 rotates relative to the supporting member 273. The elastic member 274 is squeezed by the supporting member 273 and undergoes elastic deformation. The frictional resistance between the pushing member 271 and the supporting member 273 makes the linkage member 264 positioned relative to the linkage seat 261, so as to realize that the side support member 233 is positioned relative to the middle support member 231 at a specific angle. The specific angle range is the included angle between the two side support members 233 between 70 degrees and 130 degrees. Specifically, when the two side support members 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 through the rotating mechanism 25 and the linkage component 26, the friction between the pushing member 271 and the holding member 273 helps to position the two side support members 233, that is, the two side support members 233 do not rotate relative to each other without external force. It should be noted that the term "sleeving" in this application refers to one element being inserted into another element, such as having a through hole, shaft hole, or groove on the other element, with part or all of the one element inserted into the through hole, shaft hole, or groove; for example, the linkage 264 sleeved on the rotating shaft 266 means that the linkage 264 has a shaft hole, and the rotating shaft 266 is inserted into the shaft hole; similarly, the abutment 273 sleeved on the rotating shaft 266 means that the abutment 273 has a shaft hole, and the rotating shaft 266 is inserted into the shaft hole.

[0045] Specifically, the abutment 273 includes a second cam 2730, and an elastic member 274 elastically pushes against the abutment 273 so that the second cam 2730 and the first cam 2710 can rotatably abut against each other. When the first cam 2710 rotates relative to the second cam 2730, the first cam 2710 rotatably pushes the second cam 2730 to slide away from or towards the linkage seat 261, the elastic member 274 is compressed, and the frictional resistance between the first cam 2710 and the second cam 2730 can limit the pusher 271 relative to the abutment 273 to a specific angle. In this embodiment, the abutment 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 second cam 2730 includes a circular sleeve and a concave-convex surface at one end of the sleeve. The concave-convex surface includes a second protrusion 2734 and a second recess 2735, which are arranged sequentially at intervals along the circumference of the sleeve. The number of second protrusions 2734 and second recesses 2735 on the second cam 2730 is the same as the number of first recesses 2714 and first protrusions 2712 on the first cam 2710, such that the first protrusions 2712 engage with the second recesses 2735, and the second protrusions 2734 engage with the first recesses 2714. The connecting portion 2732 has two spaced guide holes 2737 along the axial direction of the sleeve of the second cam 2730. In this embodiment, the elastic element 274 is a spring sleeved on the rotating shaft 266.

[0046] The limiting mechanism 27 also includes a positioning member 275 sleeved on the end of the rotating shaft 266 away from the supporting member 273 and a friction member 276 fixedly sleeved on the rotating shaft 266. The friction member 276 is located between the positioning member 275 and the elastic member 274. The end of the elastic member 274 away from the supporting member 273 elastically abuts against the friction member 276, so that the friction member 276 abuts against the positioning member 275. The rotation of the rotating shaft 266 causes the friction member 276 to rotate relative to the positioning member 275. The frictional resistance between the friction member 276 and the positioning member 275 can limit the two side support members 233 to a specific angle between 70 degrees and 130 degrees. The positioning member 275 includes a positioning plate 2751 and a connecting plate 2753 connected to the middle of one side of the positioning plate 2751. The two opposite ends of the positioning plate 2751 are respectively provided with through holes 2752, and the two opposite end faces of the positioning plate 2751 form arc surfaces. The connecting plate 2753 extends from the middle of one side of the positioning plate 2751 in a direction perpendicular to the positioning plate 2751, and a connecting hole 2754 is provided at the end of the connecting plate 2753. Preferably, the end face of the connecting plate 2753 facing away from the positioning plate 2751 forms an arc surface. The friction element 276 includes a friction plate 2760, and friction structures 2762 are provided on opposite sides of the friction plate 2760. The friction structures 2762 may be, but are not limited to, friction holes, friction protrusions, or friction patterns. In this embodiment, the friction plate 2760 is a circular plate, and a positioning hole 2764 is provided in the middle of the circular plate along its axial direction. The positioning hole 2764 is an oblong hole. In other embodiments, the friction plate 2760 may be, but is not limited to, a rectangular plate, a polygonal plate, an elliptical plate, etc., and the positioning hole 2764 may be, but is not limited to, a rectangular hole or a polygonal hole.

[0047] Preferably, the limiting mechanism 27 further includes a washer 277 sleeved on the rotating shaft 266, the washer 277 being located between the elastic member 274 and the friction member 276. The washer 277 includes a connecting portion 2771 and abutment tops 2773 located at opposite ends of the connecting portion 2771, the abutment tops 2773 having through holes 2772 along the axial direction of the rotating shaft 266. In this embodiment, the connecting portion 2771 is a rectangular piece, the abutment tops 2773 are circular pieces, and the through holes 2772 are located in the middle of the circular pieces.

[0048] The limiting mechanism 27 also includes two locking members 278, which are respectively located at opposite ends of the rotating shaft 266. Each locking member 278 includes a locking piece 2781 and two latches 2783 located at opposite ends of the locking piece 2781. The opposite end faces of the locking piece 2781 are formed into arc surfaces, and the latches 2783 are C-shaped retaining rings. A positioning groove 2785 is provided in the middle of the locking piece 2781.

[0049] like Figure 6 and Figure 7As shown, the back cover 28 is a strip frame with a second receiving groove 280. The positioning seat 251, the linkage seat 261, and the positioning member 275 are housed in the second receiving groove 280 and fixedly connected to the back cover 28. Specifically, the back cover 28 has a plurality of first support columns 281 and second support columns 283 on its bottom surface within the second receiving groove 280. The first support columns 281 are used to connect the positioning seat 251 and the linkage seat 261, and the second support columns 283 are used to connect the positioning member 275. In this embodiment, the back cover 28 has three first support columns 281 at one end of the bottom surface of the second receiving groove 280, and each first support column 281 has a first connecting hole 2812 along its axial direction; the opposite end of the bottom surface of the second receiving groove 280 has a second support column 283, and the second support column 283 has a second connecting hole 2832 along its axial direction. In other embodiments, the positioning base 251, the linkage base 261, and the positioning member 275 can also be connected to the back cover 28 by means of, but not limited to, snap-fit ​​or adhesive bonding.

[0050] Please refer to the following: Figures 3-18When assembling the rotating shaft device, the gear assembly 265 is assembled onto one end of the two rotating shafts 266 with positioning covers 2662. Specifically, the two first gears 2651 are respectively fixedly sleeved onto the ends of the two rotating shafts 266 with positioning covers 2662, and then the two second gears 2652 are placed between the two first gears 2651 after meshing with each other, so that the two second gears 2652 mesh with the two first gears 2651 respectively; the two buckles 2783 of one of the snap-fit ​​pieces 278 are respectively snapped onto the connecting rods 2664 of the two rotating shafts 266, and the rotating shafts of the two second gears 2652 are respectively inserted into the positioning grooves 2785 of the snap-fit ​​piece 278; the ends of the two rotating shafts 266 away from the gear assembly 265 are respectively inserted into the linkage seat 26. The two shaft holes 2613 of the first linkage 1 are inserted into the two shaft holes 2613 of the second gear 2652 respectively; the sleeves 2642 of the two linkage members 264 are respectively sleeved on the two shafts 2660 until the two sleeves 2642 are respectively positioned on the two positioning parts 2665. At this time, the stops 2645 of the two linkage members 264 correspond to the two arc-shaped stop bars 2616 of the linkage seat 261 respectively; the abutment 273 is sleeved on the two rotating shafts 266 until the two second cams 2730 of the abutment 273 are respectively engaged with the first cams 2710 of the two linkage members 264; at this time, the first protrusion 2712 is accommodated in the second recess 2735, and the second protrusion 2734 is accommodated in the first recess 2714. Two elastic elements 274 are respectively fitted onto the ends of the two rotating shafts 266 away from the gear assembly 265; a washer 277 is fitted onto the ends of the two rotating shafts 266 away from the gear assembly 265, that is, the ends of the two rotating shafts 266 away from the positioning cover 2662 are respectively inserted into the two through holes 2772 of the washer 277. Two friction elements 276 are respectively fitted onto the ends of the two rotating shafts 266 away from the gear assembly 265; a positioning element 275 is fitted onto the ends of the two rotating shafts 266 away from the gear assembly 265, that is, the ends of the two rotating shafts 266 away from the positioning cover 2662 are respectively inserted into the two through holes 2752 of the positioning element 275; two latches 2783 of another latching element 278 are respectively latched into the slots 2667 of the two rotating shafts 266.At this time, the abutment 273, elastic element 274, gasket 277, friction element 276, and positioning element 275 are respectively sleeved on the rotating shaft 266, meaning that the abutment 273, elastic element 274, gasket 277, friction element 276, and positioning element 275 can all move along the axial direction of the rotating shaft 266; the elastic element 274 is located between the gasket 277 and the abutment 273, and the friction element 276 is positioned on the positioning surface 2666 of the rotating shaft 266 and is located between the gasket 277 and the positioning element 275, meaning that the friction element 276 moves along the corresponding rotating shaft 266. When the rotating shaft 266 rotates, the abutment 273, the positioning element 275, and the gasket 277 cannot rotate with the rotating shaft 266; the end of the elastic element 274 away from the abutment 273 elastically abuts against the gasket 277, and the elastic element 274 is in a compressed state, that is, the elastic element 274 has a pre-elastic force. If the elastic element 274 has a pre-elastic force F0, each first cam 2710 can rotate and abut against the corresponding second cam 2730. The axial force F on the first cam 2710 and the second cam 2720 on each rotating shaft 266 is equal to the pre-elastic force F0 of the elastic element 274, that is, F = F0; the axial force F between the friction element 276 on each rotating shaft 266 and the corresponding gasket 277 or positioning element 275 is equal to the pre-elastic force F0 of the elastic element 274, that is, F = F0.

[0051] The first rotating parts 2540 of the two rotating members 254 are rotatably connected to the positioning seats 251. Specifically, the two rotating members 254 are placed between the first seat 251a and the second seat 251b, and the rotating bar with two second arc tracks 2541 is placed in the receiving space of the second seat 251b. The first seat 251a and the second seat 251b are brought closer together so that each second arc track 2541 of the rotating member 254 is accommodated in the corresponding second arc groove 2511. Two stop members 252 are placed in the two connecting holes 2515 of the first seat 251a, and two locking fasteners 2525 are connected to the two positioning seats 251a through the stop members 252. In the connecting hole 2515, the stop 252 is fixed to the first seat 251a to prevent the second arc track 2541 of the rotating part 254 from disengaging from the second arc groove 2511; the assembled linkage component 26 and limiting mechanism 27 are placed on the end of the second seat 251b away from the first seat 251a, so that the connecting rods 2664 of the two rotating shafts 266 are respectively engaged in the two connecting grooves 2518, and the ends of the rotating shafts of the two second gears 2652 are respectively inserted into the two connecting holes 2515, so that the linkage seat 261 is detachably connected to the positioning seat 251; the two connecting parts 256 are placed on the two opposite sides of the assembled linkage component 26 and limiting mechanism 27. On the side, the connecting rods 2643 of the two linkages 264 are respectively inserted into the guide spaces 2566 of the two connectors 256. Specifically, the two guide strips 2647 of each connecting rod 2643 are slidably inserted into the corresponding second guide grooves 2568. The second rotating parts 2542 of the two rotating parts 254 are respectively housed in the receiving openings 2561 of the two connectors 256, so that the mating blocks 2563 of each connector 256 are inserted into the mating grooves 2547 of the corresponding second rotating parts 2542. Then, the two rotating shafts 2565 are respectively inserted into the corresponding shaft holes 2564 and 2546, so that the ends of the two rotating parts 254 away from the positioning seat 251 are rotatably connected. Two connecting pieces 256 are placed; then two side support pieces 233 are placed on opposite sides of the positioning seat 251. The two first arc rails 2562 of each connecting piece 256 are respectively inserted into the two first arc grooves 2335 of the corresponding side support piece 233. At the same time, the limiting parts 2336 of the two side support pieces 233 are respectively inserted into the guide openings 2646 of the two linkage pieces 264. The two first guide parts 2640 are slidably accommodated in the limiting grooves 2330 of the two limiting parts 2336, and the first guide parts 2640 are connected to the corresponding linkage pieces 264. The second guide part 2641 on one of the linkage pieces 264 is accommodated in the first guide groove 2337.The rotating mechanism 25, the linkage component 26, and the limiting mechanism 27 are placed in the second receiving groove 280 of the back cover 28. Several locking fasteners 2525 are passed through the positioning seat 251 and connected to the first connecting holes 2812 of several first support columns 281 respectively. The middle support member 231 is placed on the limiting mechanism 27. The locking fasteners are passed through the countersunk hole 2313 of the middle support member 231 and the connecting hole 2754 of the positioning member 275 and then connected to the second connecting hole 2832 of the second support column 283.

[0052] At this time, the rotation axis between the rotating component 254 and the positioning seat 251 is parallel to the rotation axis between the side support component 233 and the connecting component 256; the rotation axis between the rotating component 254 and the positioning seat 251 is parallel to the rotation axis between the linkage component 264 and the linkage seat 261; and the rotation axis between the rotating component 254 and the positioning seat 251 is parallel to the axis of the rotating shaft 266. When the side support 233 and the middle support 231 are flattened, the side support 233 and the middle support 231 are arranged side by side. The first arc track 2562 is rotatably accommodated in the corresponding first arc groove 2335, and the second arc track 2541 is rotatably accommodated in the corresponding second arc groove 2511. The first guide slide 2640 is located in the second limiting section 2330b of the limiting slide groove 2330, and the second guide slide 2641 is stopped by the second stop part 2337b of the first guide slide groove 2337.

[0053] When the connecting member 256 drives the rotating member 254 to rotate relative to the positioning seat 251, the linkage member 264 rotates relative to the linkage seat 261, and the rotating assembly 253 drives the side support member 233 to rotate and slide relative to the positioning seat 251, so that the side support members 233 bend or unfold synchronously relative to each other. Specifically, the rotating member 254 rotates relative to the positioning seat 251 through the second arc track 2541 and the second arc groove 2511; the linkage member 264 rotates together with the rotating assembly 253, driving the corresponding rotating shaft 266 to rotate, so that the first gear 2651 on the rotating shaft 266 rotates, thereby driving the corresponding second gear 2652 to rotate, thus realizing the synchronous rotation of the two linkage members 264 of the linkage assembly 26. The guide strip 2647 of each linkage member 264 moves along the corresponding second guide groove. 2568 slides, each first guide slide 2640 slides and rotates in the corresponding limiting slide groove 2330, and the second guide slide 2641 slides in the first guide slide groove 2337; the first arc rail 2562 of the connecting member 256 is rotatably connected to the corresponding first arc groove 2335, and the second arc rail 2541 of the rotating member 254 is rotatably connected to the corresponding second arc groove 2511, so as to realize the mutual bending or mutual unfolding of the two side support members 233 and the middle support member 231.

[0054] like Figures 14-28When 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. One of the connecting members 256 drives the second arc track 2541 of the rotating member 254 to rotate within the second arc groove 2511 of the positioning seat 251. The connecting member 256 also drives the linkage member 264 and the corresponding rotating shaft 266 to rotate together relative to the linkage seat 261, and the guide strip 2647 of the linkage member 264... The first guide slide portion 2640 of the linkage 264 slides from the second limiting segment 2330b of the limiting slide groove 2330 to the first limiting segment 2330a in the second guide slide groove 2568, and the second guide slide portion 2641 of the linkage 264 slides from the second stop portion 2337b to the first stop portion 2337a in the first guide slide groove 2337, so as to drive the corresponding linkage 264 and the rotating shaft 266 to rotate relative to the linkage seat 261 along the axis of the rotating shaft 266. The rotation of the linkage 264 drives the first gear 2651 on the corresponding rotating shaft 266 to rotate. Through the gear combination 265, the two corresponding first gears 2651 rotate synchronously. The synchronously rotating first gears 2651 drive the two corresponding linkages 264 to move closer to each other synchronously. At the same time, the connector 256 drives the first arc track 2562 to rotate and connect to the corresponding first arc groove 2335, and the rotating member 254 drives the second arc track 2541 to rotate and connect to the corresponding second arc groove 2511. Meanwhile, the linkages 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 middle support member 231 form a teardrop shape in cross section.

[0055] During the aforementioned process, as the side support member 233 bends relative to the central support member 231, the first guide slide 2640 slides from the end of the limiting slide groove 2330 away from the central support member 231 (that is, the second limiting segment 2330b of the first guide slide 2640 of the limiting slide groove 2330) to the end closer to the central support member 231 (that is, the first limiting segment 2330a of the first guide slide 2640 of the limiting slide groove 2330), and the second guide slide 2641 slides from the end of the first guide slide groove 2337 away from the central support member 231 (that is, the second stop 2337b of the first guide slide groove 2337) to the end closer to the central support member 231 (the first stop 2337a of the first guide slide groove 2337). The axial force between the first cam 2710 and the corresponding second cam 2730 on each rotating shaft 266 is equal to the elastic force of the elastic element 274. The axial force between the friction element 276 and the pad 277 and the positioning element 275 on each rotating shaft 266 is equal to the elastic element 274. The frictional resistance between the first cam 2710 and the second cam 2730 and the frictional resistance between the friction element 276 and the pad 277 and the positioning element 275 can limit the two side support members 233 to a specific angle between 70 degrees and 130 degrees. Figure 22 As shown, the angle of rotation of the connector 256 and the rotating member 254 relative to the positioning seat 251 is α, and the angle of rotation of the side support member 233 relative to the positioning seat 251 is β. The α is less than or equal to 90 degrees, and the β is greater than 90 degrees. In this embodiment, the α is equal to 90 degrees and the β is equal to 110 degrees.

[0056] In other usage methods, the two connectors 256 can be rotated together in opposite directions. Each connector 256 rotates relative to the second arc groove 2511 of the positioning seat 251 via the second arc rail 2541 of the corresponding rotating member 254, thereby driving the linkage member 264 and the corresponding rotating shaft 266 to rotate relative to the linkage seat 261. Simultaneously, the two connectors 256 synchronously drive the first arc rail 2562 to rotate in the first arc groove 2335 corresponding to the side support member 233, and the guide strip 2647 of the linkage member 264 slides in the second guide groove 2568. The rotation of the linkage member 264 drives the corresponding first gear 2651 to rotate, and through the gear combination 265, drives the corresponding two first gears 2651 to rotate. The gear 2651 rotates synchronously, and the synchronously rotating first gear 2651 drives the two linkage members 264 to move closer to each other synchronously. The first guide slide part 2640 on the linkage member 264 slides from the second limiting section 2330b of the limiting slide groove 2330 to the first limiting section 2330a, and the second guide slide part 2641 of the linkage member 264 slides from the second stop part 2337b to the first stop part 2337a in the first guide slide groove 2337. At the same time, the linkage members 264 on both sides of the linkage seat 261 move closer to each other relative to the synchronous rotation of the linkage seat 261, 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 middle support member 231 form a teardrop shape in cross section.

[0057] 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 rotating member 254 to rotate within the second arc groove 2511 of the positioning seat 251. The connecting member 256 drives the linkage member 264 and the corresponding rotating shaft 266 to rotate together relative to the linkage seat 261. The guide strip 2647 of the linkage member 264 slides in the second guide groove 2568, the first guide part 2640 of the linkage member 264 slides from the first limiting section 2330a of the limiting groove 2330 to the second limiting section 2330b, and the second guide part 2641 of the linkage member 264 slides from the first stop part 2337a to the second stop part 2337b in the first guide groove 2337. Meanwhile, the connector 256 drives the first arc track 2562 to rotate and connect to the corresponding first arc groove 2335. The rotation of the linkage 264 drives the corresponding first gear 2651 to rotate through the rotating shaft 266. The gear combination 265 drives the two corresponding first gears 2651 to rotate synchronously. The synchronously rotating first gears 2651 drive the two corresponding linkages 264 to move away from each other synchronously. At the same time, the two rotating components 253 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 unfold synchronously until the two side support members 233 and the middle support member 231 are flattened.

[0058] During the above process, as the side support 233 flattens out relative to the middle support 231, the first guide slide 2640 slides from the end of the limiting slide groove 2330 near the middle support 231 (that is, the first limiting segment 2330a of the first guide slide 2640) to the end away from the middle support 231 (that is, the second limiting segment 2330b of the first guide slide 2640), and the second guide slide 2641 slides from the end of the first guide slide groove 2337 near the middle support 231 (the first stop 2337a of the first guide slide groove 2337) to the end away from the middle support 231 (that is, the second stop 2337b of the first guide slide groove 2337). The axial force between the first cam 2710 and the corresponding second cam 2730 on each rotating shaft 266 is equal to the elastic force of the elastic element 274, and the axial force between the friction element 276 and the pad 277 and the positioning element 275 on each rotating shaft 266 is equal to the elastic element 274; the frictional resistance between the first cam 2710 and the second cam 2730 and the frictional resistance between the friction element 276 and the pad 277 and the positioning element 275 can limit the two side support members 233 to a specific angle between 70 degrees and 130 degrees.

[0059] In other usage methods, the two connectors 256 can be rotated together in a direction away from each other. Each connector 256 drives the second arc track 2541 of the rotating member 254 to rotate relative to each other along the second arc groove 2511 of the positioning seat 251. The connector 256 drives the linkage member 264 and the corresponding rotating shaft 266 to rotate together relative to the linkage seat 261. The guide strip 2647 of the linkage member 264 slides in the second guide groove 2568, the first guide part 2640 of the linkage member 264 slides from the first limiting section 2330a of the limiting groove 2330 to the second limiting section 2330b, and the second guide part 2641 of the linkage member 264 slides from the first limiting section 2330a of the limiting groove 2330 to the second limiting section 2330b. A stop 2337a slides to a second stop 2337b; simultaneously, the connector 256 drives the first arc track 2562 to rotate and connect to the corresponding first arc groove 2335. The rotation of the linkage 264 drives the corresponding first gear 2651 to rotate through the rotating shaft 266. The gear combination 265 drives the two corresponding first gears 2651 to rotate synchronously. The synchronously rotating first gears 2651 drive the corresponding linkage 264 to move away from each other synchronously. At the same time, the two rotating components 253 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 two side support members 233 are flush with the middle support member 231.

[0060] In some embodiments, the first guide groove 2337 on the side support 233 can be omitted, and the second guide part 2641 on the corresponding linkage 264 can also be omitted.

[0061] Please refer to the following: Figures 1-5 The installed pivot 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 first 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 first front face 211 of the two frames 21, the front face of the two side support members 233, and the front face of the middle support member 231 are coplanar. The back of the flexible member 30 is connected to the first front face 211 of the two frames 21 and the front face of the pivot device 22. Specifically, the bendable area 31 faces the front face of the pivot device 22, and the two non-bendable areas 33 face the front faces of the two frames 21 respectively. When the flexible component 30 is in a flattened state, the central support 231 is flush with the two side supports 233, and the rotating shaft device 22 remains flat. In addition, the first guide slide 2640 of the linkage 264 is slidably accommodated in the limiting slide groove 2330 of the corresponding side support 233. When the rotating shaft device 22 is in a bent state, the first guide slide 2640 stops at the first limiting section 2330a of the limiting slide groove 2330 to prevent the rotating shaft device 22 from bending further and potentially damaging the flexible component 30. When the rotating shaft device 22 is in a flattened state, the first guide slide 2640 stops at the first limiting section 2330b of the limiting slide groove 2330 to prevent the rotating shaft device 22 from unfolding further and potentially damaging the flexible component 30.

[0062] Please refer to the following: Figures 19-28When bending the electronic device 100, a bending force is applied to at least one of the two frames 21 of the electronic device 100, causing the rotating assembly 253 connected to the two frames 21 to rotate in a direction closer to each other. The bending of the rotating shaft device 22 is achieved through the linkage assembly 26, and the bendable area 31 of the flexible member 30 bends with the support mechanism 23. Specifically, if a bending force is applied to one of the frames 21, the frame 21 drives the corresponding rotating member 254 to rotate relative to the positioning seat 251 towards the side closer to the flexible member 30. The second arc track 2541 of the rotating member 254 rotates relative to the second arc groove 2511 of the positioning seat 251. The connecting member 256 drives the linkage member 264 and the corresponding rotating shaft 266 to rotate together relative to the linkage seat 261. The first guide slide 2640 limits the slide groove 2330, and the guide strip 2647 of the linkage member 264 slides in the second guide groove 2568. The second limiting segment 2330b of the limiting slide groove 2330 slides to the first limiting segment 2330a, and the second guide slide portion 2641 of the linkage 264 slides from the second stop portion 2337b to the first stop portion 2337a in the first guide slide groove 2337, so as to drive the corresponding linkage 264 and the rotating shaft 266 to rotate together. The rotation of the linkage 264 drives the corresponding first gear 2651 to rotate. Through the gear combination 265, the corresponding two first gears 2651 are driven to rotate synchronously. The synchronously rotating first gears 2651 drive the corresponding two linkages 264 to move closer to each other synchronously. Simultaneously, the connector 256 drives the first arc rail 2562 to rotate and connect to the corresponding first arc groove 2335, and the rotating component 254 drives the second arc rail 2541 to rotate and connect to the corresponding second arc groove 2511. At the same time, the two rotating components 253 rotate synchronously relative to the positioning seat 251 and move closer to each other, so as to drive the two side support components 233 to move closer to each other synchronously, so that the rotating shaft device 22 is in a bent state. The bendable area 31 of the flexible component 30 bends with the rotating shaft device 22 until the front sides of the two non-bendable areas 33 of the flexible component 30 are in contact with each other, and the bendable area 31 is bent into a teardrop shape, thereby realizing the seamless folding of the electronic device 100.

[0063] In the above process, the frictional torque between the first cam 2710 and the second cam 2730 on each rotating shaft 266, and the frictional torque between the friction member 276 and the pad 277 and the positioning member 275, are greater than the rebound force of the flexible member 30. This allows the two side support members 233 to be positioned relative to each other at a specific angle, thus limiting the two frames 21 to a specific angle between 70 and 130 degrees. The bendable area 31 of the flexible member 30 is bent into a teardrop shape, reducing the duty cycle of the bendable area 31 after bending, thereby reducing the overall thickness of the electronic device 100.

[0064] like Figure 20As shown, the included angle C between the side support 233 and the frame 21 is greater than 180°. Since the connector 256 is fixed to the frame 21, the angle between the connector 256 and the frame 21 is 180 degrees when the electronic device 100 is folded. The non-bending area 33 of the flexible component 30 is bonded to the front of the frame 21, and the front of the side support 233 is bonded to the bendable area 31 of the flexible component 30 by adhesive. The middle support 231 is not bonded to the flexible component 30. When the flexible component 30 is folded, the bendable area 31 of the flexible component 30 is divided into a first bendable area 312 and a second bendable area 314. That is, the flexible component 30 is divided into the non-bending area 33 corresponding to the frame 21, the first bendable area 312 corresponding to the side support 233, and the second bendable area 314 corresponding to the middle support 231. Since the non-bending area 33 is adhered to the frame 21, the folding angle of the non-bending area 33 is the same as the folding angle of the frame 21. The first bendable area 312 is adhered to the side support member 233. When the first bendable area 312 is folded, the adhered section between the first bendable area 312 and the side support member 233 will naturally flare outwards. The side support member 233 can limit the outward shape of the first bendable area 312. Since the second bendable area 314 is not adhered to the central support member 231, and the two side support members 233 limit the opposite sides of the second bendable area 314, the second bendable area 314 will tend to move towards the central support member 231 during the folding process. The central support member 231 abuts against the second bendable area 314 to limit the shape of the second bendable area 314. Therefore, the area formed by the side support 233, the middle support 231, and the frame 21, along with the adhesive application, allows the bendable area 31 of the flexible component 30 to form a teardrop shape. After the bendable area 31 forms a teardrop shape, the flexible component 30 between each frame 21 and the side support 233 forms an outer bending area, that is, an outer bending area is formed between each non-bending area 33 of the flexible component 30 and the first bendable area 312; the flexible component 30 between the middle support 231 and the two side support 233 forms an inner bending area, that is, the second bendable area 314 of the flexible component 30 forms an inner bending area; the force direction and magnitude of the outer bending area are different from those of the inner bending area.

[0065] In other bending methods of the electronic device 100, bending forces can be applied to both frames 21 at the same time. The two frames 21 drive the two rotating components 253 to rotate towards the side closer to the flexible member 30, and the bending of the electronic device 100 is achieved through the rotating shaft device 22.

[0066] When it is necessary to flatten the electronic device 100, one of the frames 21 is pulled outward, causing the two rotating components 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. This causes the corresponding rotating member 254 to rotate relative to the positioning seat 251 towards the side away from the flexible member 30. The second arc track 2541 of the rotating member 254 rotates relative to the second arc groove 2511 of the positioning seat 251. The connecting member 256 causes the linkage member 264 and the corresponding rotating shaft 266 to rotate together relative to the linkage seat 261. The guide strip 2647 of the linkage member 264 slides in the second guide groove 2568, the first guide portion 2640 of the linkage member 264 slides from the first limiting section 2330a of the limiting groove 2330 to the second limiting section 2330b, and the second guide portion 2641 of the linkage member 264 slides from the first stop portion 2337 in the first guide groove 2337. a slides to the second stop 2337b; to drive the corresponding linkage 264 and the corresponding rotating shaft 266 to rotate together; at the same time, the connecting member 256 drives the first arc track 2562 to rotate and connect to the corresponding first arc groove 2335. The rotation of the linkage 264 drives the corresponding first gear 2651 to rotate. Through the gear combination 265, the corresponding two first gears 2651 are driven to rotate synchronously. The synchronously rotating first gears 2651 drive the corresponding two linkages 264 to move away from each other synchronously. At the same time, the two rotating components 253 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 and flatten, so that the rotating shaft device 22 unfolds, and the bendable area 31 of the flexible member 30 unfolds with the rotating shaft device 22 until the flexible member 30 is flattened.

[0067] In the above process, the sum of the frictional torque between the first cam 2710 and the second cam 2730 on each rotating shaft 266, and the frictional torque between the friction member 276 and the pad 277 and the positioning member 275 are greater than the rebound force of the flexible member 30, so that the two side support members 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.

[0068] In other bending 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 respectively drive the two rotating components 253 to rotate relative to the side away from the flexible member 30, and the electronic device 100 is unfolded through the rotating shaft device 22.

[0069] The rotating shaft device 22 of the electronic device 100 of the present invention achieves synchronous bending or unfolding through the rotating mechanism 25 and the linkage component 26. Furthermore, when the rotating shaft device 22 is in a bent state, the first guide slide 2640 stops at the first limiting section 2330a of the limiting groove 2330, preventing further bending of the rotating shaft device 22 from potentially damaging the flexible component 30. When the rotating shaft device 22 is in a flattened state, the first guide slide 2640 stops at the first limiting section 2330a of the limiting groove 2330. b. To prevent further expansion of the pivot device 22 that could damage the flexible component 30; in addition, because the elastic component 274 of the limiting mechanism 27 can provide a large axial force, the frictional torque between the first cam 2710 and the second cam 2730 and between the friction component 276 and the pad 277 and the positioning component 275; therefore, the large frictional torque between the first cam 2710 and the second cam 2730, and also between the friction component 276 and the pad 277 and the positioning component 275, ensures that the frictional torque is large enough to limit the bending of the electronic device 100 to a specific angle between 70 degrees and 130 degrees, thus achieving the hovering function of the entire device. Furthermore, the pivot device 22 has a robust structure, improving the overall strength of the electronic device 100.

[0070] Please refer to the following: Figures 29-32 The structure of the rotating shaft device 22a in another embodiment of the present invention is similar to that of the rotating shaft device 22 in one of the above embodiments. The difference is that, in the other embodiment, the linkage member 264 and the side support member 233 of the rotating shaft device 22a are connected by the stop groove and the stop part to replace the connection between the limiting groove 2330 and the first guide part 2640. The connection between the linkage member 264 and the side support member 233 of the rotating shaft device 22a by the stop groove and the stop part can prevent the side support member 233 from being over-folded or over-flattened and thus damaging the flexible screen. In this embodiment, a stop groove 2338 is provided on the side support member 233. The stop groove 2338 includes a first stop groove 2338a and a second stop groove 2338b that are parallel to each other. The first stop groove 2338a includes a first stop segment 2338c, and the second stop groove 2338b includes a second stop segment 2338d. A stop part 2648 is provided on the linkage member 264 corresponding to the stop groove 2338. When the two side support members 233 are in a fully folded state, the stop part 2648 is positioned at the first stop segment 2338c to prevent the side support members 233 from folding further and potentially damaging the flexible screen. When the two side support members 233 are in a flattened state, the stop part 2648 is positioned at the second stop segment 2338d to prevent the side support members 233 from folding back further after being flattened and potentially damaging the flexible screen.

[0071] Specifically, a limiting part 2336 protrudes from the back of the side support member 233 corresponding to the linkage member 264. The limiting part 2336 is an arc-shaped strip that bends and extends from the side of the side support plate near the positioning seat 251 to the side away from the positioning seat 251. A first stop groove 2338a and a second stop groove 2338b are respectively provided on the limiting part 2336 and extend along the length direction of the limiting part 2336. At least one end of the first stop groove 2338a and the second stop groove 2338b is configured to be open. In the open state, at least one end of the first stop groove 2338a and the second stop groove 2338b has no end wall. Since at least one end of the first stop groove 2338a and the second stop groove 2338b does not need to be provided with an end wall, the extension length of the limiting part 2336 can be reduced, thereby reducing the width of the side support member 233, so that the overall width of the rotating shaft device 22a is reduced, reducing the internal space occupied by the rotating shaft device 22a in the housing of the electronic device, which is beneficial to the layout of other components such as the motherboard or battery.

[0072] Preferably, both the first stop groove 2338a and the second stop groove 2338b are arc grooves. Compared with straight grooves, the arc grooves occupy a smaller length, thereby reducing the length of the limiting part 2336 extending along the width direction of the side support member 233. This reduces the width of the side support member 233, making the overall width of the rotating shaft device 22a smaller. This reduces the internal space occupied by the rotating shaft device 22a in the electronic device's housing, which is beneficial for the layout of other components such as the motherboard or battery.

[0073] The first stop segment 2338c is closer to the positioning seat than the second stop segment 2338d. That is, the first stop segment 2338c is closer to the positioning seat 251, while the second stop segment 2338d is farther away from the positioning seat 251. The stop portion 2648 includes a first stop portion 2648a and a second stop portion 2648b disposed at intervals on the connecting rod 2643. The first stop portion 2648a is slidably accommodated in the first stop groove 2338a, and the second stop portion 2648b is slidably accommodated in the second stop groove 2338b. When the first stop portion 2648a is positioned at the first stop segment 2338c, the two side support members 233 are in a fully folded state. The positioning of the first stop portion 2648a and the first stop segment 2338c can prevent the side support members 233 from further folding and damaging the flexible screen. When the second stop portion 2648b is positioned at the second stop segment 2338d, the two side support members 233 are in a flattened state. The positioning of the second stop portion 2648b and the second stop segment 2338d can prevent the side support members 233 from further flattening and folding back, thus damaging the flexible screen.

[0074] The limiting part 2336 includes two opposing sides, and a first stop groove 2338a and a second stop groove 2338b are respectively provided on the two sides. There is a gap between the first stop part 2648a and the second stop part 2648b. The limiting part 2336 is slidably accommodated in the gap, the first stop part 2648a is slidably accommodated in the first stop groove 2338a, and the second stop part 2648b is slidably accommodated in the second stop groove 2338b. In this embodiment, the first stop groove 2338a is provided on one side of the limiting part 2336 near the side support plate 2331. The first stop groove 2338a is an arc-shaped groove, which curves away from the side support plate 2331. The two opposite ends of the first stop groove 2338a pass through the opposite end faces of the limiting part 2336. The end of the first stop groove 2338a near the limiting part 2336 forms a first stop segment 2338c with the limiting part 2336; the second The stop groove 2338b is located on the opposite side of the limiting part 2336, away from the side support plate 2331. The second stop groove 2338b is an arc-shaped groove that curves away from the side support plate 2331. The end of the second stop groove 2338b near the positioning seat 251 passes through the end face of the limiting part 2336, and the end of the second stop groove 2338b away from the positioning seat 251 extends to the end face near the limiting part 2336 to form the second stop segment 2338d.

[0075] like Figure 30As shown, both the first stop portion 2648a and the second stop portion 2648b are disposed on the side of the connecting rod 2643 facing the side support member 233. The first stop portion 2648a is further away from the sleeve 2642 than the second stop portion 2648b, that is, the first stop portion 2648a is further away from the positioning seat 251 than the second stop portion 2648b. There is a gap 2648c between the first stop portion 2648a and the second stop portion 2648b. The limiting portion 2336 is slidably inserted into the gap 2648c. The first stop portion 2648a is slidably accommodated in the first stop groove 2338a, and the second stop portion 2648b is slidably accommodated in the second stop groove 2338b. Specifically, the first stop portion 2648a includes a support plate protruding from the connecting rod 2643 and a first stop block disposed at the end of the support plate away from the connecting rod 2643. The first stop block is slidably accommodated in the first stop groove 2338a and can stop at the first stop segment 2338c. The second stop portion 2648b is a second stop block protruding from the connecting rod 2643. The second stop block is slidably accommodated in the second stop groove 2338b and can stop at the second stop segment 2338d. Preferably, the surface of the first stop block that contacts the inner surface of the first stop groove 2338a is set as an arc surface to make the sliding of the first stop portion 2648a and the first stop groove 2338a smoother. In this embodiment, the first stop block is a cylinder, and the axis of the cylinder is parallel to the axis of the sleeve 2642. The end face of the second stop block away from the connecting rod 2643 is set as an arc surface so that the sliding of the second stop part 2648b and the second stop groove 2338b is smoother.

[0076] After the rotating shaft device 22a of another embodiment of the present invention is assembled, the second arc track 2541 of the rotating member 254 is rotatably housed in the second arc groove 2511 of the positioning seat 251, the second rotating part 2542 of the rotating member 254 is housed in the receiving opening 2561 of the connecting member 256, and the second rotating part 2542 is rotatably connected to the connecting member 256; the sleeve 2642 of the linkage member 264 is connected to the linkage seat 261 through a rotating shaft, and the end of the connecting rod 2643 of the linkage member 264 away from the sleeve 2642 is slidably inserted into the guide space 2 of the connecting member 256. In 566, the limiting part 2336 of the side support member 233 is slidably inserted into the guide space 2566 of the connector 256, and the limiting part 2336 is located in the gap 2648c between the first stop part 2648a and the second stop part 2648b. The first stop part 2648a is slidably accommodated in the first stop groove 2338a, and the second stop part 2648b is slidably accommodated in the second stop groove 2338b. The first arc track 2562 of the connector 256 is rotatably accommodated in the first arc groove 2335 of the side support member 233.

[0077] It should be noted that, for ease of writing, the other embodiment described herein... Figures 28-35 The schematic diagram of the rotating shaft device 22a only shows the positioning seat 251, the linkage seat 261, a side support 233, a rotating part 254, a connecting part 256 and a linkage part 264; other components are omitted.

[0078] Please refer to the following: Figures 32-35 During the folding process, a pair of rotating members 254 and a pair of connecting members 256 rotate synchronously relative to the positioning seat 251 to move closer to each other, a pair of linkage members 264 rotate synchronously relative to the linkage seat 261 to move closer to each other, and at the same time, a pair of side support members 233 bend towards each other synchronously. Specifically, the rotating member 254 rotates relative to the positioning seat 251 via the second arc track 2541 and the second arc groove 2511, thereby driving the connecting member 256 to rotate relative to the positioning seat 251. The rotation of the connecting member 256 drives the corresponding rotating shaft 266 of the linkage member 264 to rotate, so that the first gear on the rotating shaft rotates, thereby driving the corresponding second gear to rotate, thus realizing the synchronous rotation of the two linkage members and bringing them closer to each other. The connecting rod 2643 of each linkage member 264 slides in the guide space 2566. The first stop part 2648a slides towards the first stop section 2338c in the first stop groove 2338a until the first stop part 2648a stops at the first stop section 2338c. The second stop part 2648b slides away from the second stop section 2338d in the second stop groove 2338b, thereby realizing the mutual bending of the two side support members 233.

[0079] During the flattening process, a pair of rotating members 254 and a pair of connecting members 256 rotate synchronously relative to the positioning seat 251 to move away from each other, a pair of linkage members 264 rotate synchronously relative to the linkage seat 261 to move away from each other, and at the same time, a pair of side support members 233 flatten each other synchronously. Specifically, the rotating member 254 rotates relative to the positioning seat 251 via the second arc track 2541 and the second arc groove 2511, thereby driving the connecting member 256 to rotate relative to the positioning seat 251. The rotation of the connecting member 256 drives the corresponding rotating shaft 266 of the linkage member 264 to rotate, causing the first gear on the rotating shaft to rotate, thereby driving the corresponding second gear to rotate, thus realizing the synchronous rotation of the two linkage members and moving them away from each other. The connecting rod 2643 of each linkage member 264 slides in the guide space 2566. The first stop part 2648a slides away from the first stop segment 2338c in the first stop groove 2338a, and the second stop part 2648b slides towards the second stop segment 2338d in the second stop groove 2338b until the second stop part 2648b stops at the second stop segment 2338d, thereby realizing the mutual flattening of the two side support members 233. Please refer to the following: Figures 36-39In another embodiment of the present invention, the structure of the rotating shaft device 22b is similar to that of the rotating shaft device 22 in one of the above embodiments, except that: the side support member 233 and the rotating member 254 in the rotating shaft device 22b are connected by a limiting slide groove and a guide slide, which replaces the limiting slide groove 2330 between the side support member 233 and the linkage member 264 in the rotating shaft device 22 that is connected by a first guide slide 2640. The side support member 233 and the rotating member 254 in the rotating shaft device 22b are connected by a limiting slide groove and a guide slide, which can prevent the side support member 233 from being over-folded or over-flattened and thus damaging the flexible screen. In this embodiment, the side of the side support member 233 away from the positioning seat 251 is rotatably connected to the connecting member 256, that is, the side support member 233 and the connecting member 256 are rotatably connected through the cooperation of the first arc track 2562 and the first arc groove 2335; the side of the side support member 233 near the positioning seat 251 is provided with a limiting slide groove 2339, and the rotating member 254 is provided with a guide part 2545 that slides through the limiting slide groove 2339; the guide part 2545 slides through the limiting slide groove 2339; the limiting slide... The groove 2339 includes a first limiting section 2330a and a second limiting section 2330b located at opposite ends. When the two side supports 233 are in a fully folded state, the guide slide 2545 is positioned at the first limiting section 2330a to prevent the side supports 233 from folding further and potentially damaging the flexible screen. When the two side supports 233 are in a flattened state, the guide slide 2545 is positioned at the second limiting section 2330b to prevent the side supports 233 from folding back further after being flattened and potentially damaging the flexible screen.

[0080] The side support plate 2331 of the side support member 233 has a lug 2339c on the back side near the positioning seat 251. A limiting groove 2339 is provided on the lug 2339c. The connecting part 2543 of the rotating member 254 has a receiving groove 2545a corresponding to the lug 2339c. The lug 2339c is movably received in the receiving groove 2545a. In this embodiment, the lug 2339c is a triangular protrusion. The limiting groove 2339 passes through the two opposite sides of the lug 2339c. The guide part 2545 is a guide post passing through the limiting groove 2339. The guide post is received in the receiving groove 2545a, and the two opposite ends of the guide post are connected to the connecting part 2543.

[0081] Preferably, the limiting groove 2339 extends obliquely away from the positioning seat 251, and the first limiting segment 2330a is closer to the positioning seat 251 and the side support plate 2331 than the second limiting segment 2330b. The guide pin passes through the limiting groove 2339, and the axis of the guide pin is parallel to the axis of rotation between the rotating member 254 and the positioning seat 251.

[0082] It should be noted that, for ease of writing, the following embodiment is described... Figures 36-41 The schematic diagram of the rotating shaft device 22b only shows the positioning seat 251, linkage seat 261, a frame 21, a side support 233, a rotating part 254, a connecting part 256 and a linkage part 264; other components are omitted.

[0083] Please refer to the following: Figures 39-41 During the folding process, a pair of rotating members 254 and a pair of connecting members 256 rotate synchronously relative to the positioning seat 251 to move closer to each other, a pair of linkage members 264 rotate synchronously relative to the linkage seat 261 to move closer to each other, and at the same time, a pair of side support members 233 bend towards each other synchronously. Specifically, the rotating member 254 rotates relative to the positioning seat 251 via the second arc track 2541 and the second arc groove 2511, thereby driving the connecting member 256 to rotate relative to the positioning seat 251. The rotation of the connecting member 256 drives the corresponding rotating shaft 266 of the linkage member 264 to rotate, so that the first gear on the rotating shaft rotates, thereby driving the corresponding second gear to rotate, thus realizing the synchronous rotation of the two linkage members and bringing them closer to each other. The connecting rod 2643 of each linkage member 264 slides in the guide space 2566. The guide part 2545 of each rotating member 254 moves from the second limiting section 2330b to the first limiting section 2330a in the limiting groove 2339 until the guide part 2545 stops at the first limiting section 2330a, so that the two side support members 233 bend against each other, so that the two side support members 233 and the middle support member form a teardrop-shaped space.

[0084] During the flattening process, a pair of rotating members 254 and a pair of connecting members 256 rotate synchronously relative to the positioning seat 251 to move away from each other, a pair of linkage members 264 rotate synchronously relative to the linkage seat 261 to move away from each other, and at the same time, a pair of side support members 233 flatten each other synchronously. Specifically, the rotating member 254 rotates relative to the positioning seat 251 via the second arc track 2541 and the second arc groove 2511, thereby driving the connecting member 256 to rotate relative to the positioning seat 251. The rotation of the connecting member 256 drives the linkage member 264 and the corresponding rotating shaft 266 to rotate, so that the first gear on the rotating shaft rotates, thereby driving the corresponding second gear to rotate, thus realizing the synchronous rotation of the two linkage members and moving them away from each other. The connecting rod 2643 of each linkage member 264 slides in the guide space 2566. The guide part 2545 of each rotating member 254 moves from the first limiting section 2330a to the second limiting section 2330b in the limiting groove 2339 until the guide part 2545 stops at the second limiting section 2330b, thereby realizing the mutual flattening of the two side support members 233.

[0085] In some embodiments, the limiting groove 2339 on the side support member 233 and the guide part 2545 on the rotating member 254 can be interchanged. That is, the guide part can be provided on the side of the side support plate 2331 near the positioning seat 251, and the limiting groove can be provided on the rotating member. The guide part slides through the limiting groove.

[0086] Please see Figure 42 In another embodiment of the present invention, the structure of the rotating shaft device 22c is similar to that of the rotating shaft device 22a in another embodiment described above. The difference is that the rotating member 254 and the side support member 233 are connected by a stop groove and a stop part in the rotating shaft device 22c, instead of the stop groove and stop part of the linkage member 264 and the side support member 233 being connected by a stop groove and a stop part. Alternatively, in the rotating shaft device 22a in another embodiment described above, the stop groove and stop part of the linkage member 264 and the side support member 233 are omitted, and the rotating member 254 and the side support member 233 are connected by a stop groove and a stop part. In this embodiment, a stop groove 2338 is provided on the side support member 233. The stop groove 2338 includes a first stop groove 2338a and a second stop groove 2338b that are parallel to each other. The first stop groove 2338a includes a first stop segment 2338c, and the second stop groove 2338b includes a second stop segment 2338d. A stop part 2548 is provided on the rotating member 254 corresponding to the stop groove 2338. When the two side support members 233 are in a fully folded state, the stop part 2548 is positioned at the first stop segment 2338c to prevent the side support members 233 from folding further and potentially damaging the flexible screen. When the two side support members 233 are in a flattened state, the stop part 2548 is positioned at the second stop segment 2338d to prevent the side support members 233 from folding back further after being flattened and potentially damaging the flexible screen.

[0087] Specifically, a limiting part 2336 is protruding from the back of the side support member 233 corresponding to the rotating member 254. The limiting part 2336 is an arc-shaped strip that bends and extends from the side of the side support plate near the positioning seat 251 to the side away from the positioning seat 251. A first stop groove 2338a and a second stop groove 2338b are respectively provided on the limiting part 2336 and extend along the length direction of the limiting part 2336. At least one end of the first stop groove 2338a and the second stop groove 2338b is configured to be open. In the open state, at least one end of the first stop groove 2338a and the second stop groove 2338b has no end wall. Since at least one end of the first stop groove 2338a and the second stop groove 2338b does not need to be provided with an end wall, the extension length of the limiting part 2336 can be reduced, thereby reducing the width of the side support member 233, so that the overall width of the rotating shaft device 22c is reduced, reducing the internal space occupied by the rotating shaft device 22c in the housing of the electronic device, which is beneficial to the layout of other components such as the motherboard or battery.

[0088] Preferably, both the first stop groove 2338a and the second stop groove 2338b are arc grooves. Compared with straight grooves, the arc grooves occupy a smaller length, thereby reducing the length of the limiting part 2336 extending along the width direction of the side support member 233. This reduces the width of the side support member 233, making the overall width of the rotating shaft device 22c smaller. This reduces the internal space occupied by the rotating shaft device 22c in the housing of the electronic device, which is beneficial for the layout of other components such as the motherboard or battery.

[0089] The first stop segment 2338c is closer to the positioning seat 251 than the second stop segment 2338d. That is, the first stop segment 2338c is closer to the positioning seat 251, while the second stop segment 2338d is farther away from the positioning seat 251. The stop portion 2548 includes a first stop portion 2548a and a second stop portion 2548b that are spaced apart from each other on the connecting portion 2543. The first stop portion 2548a is slidably accommodated in the first stop groove 2338a, and the second stop portion 2548b is slidably accommodated in the second stop groove 2338b. When the first stop portion 2548a is positioned at the first stop segment 2338c, the two side support members 233 are in a fully folded state. The positioning of the first stop portion 2548a and the first stop segment 2338c can prevent the side support members 233 from folding further and damaging the flexible screen. When the second stop portion 2548b is positioned at the second stop segment 2338d, the two side support members 233 are in a flattened state. The positioning of the second stop portion 2548b and the second stop segment 2338d can prevent the side support members 233 from flattening further and causing reverse folding that damages the flexible screen.

[0090] The limiting part 2336 includes two opposing sides, and a first stop groove 2338a and a second stop groove 2338b are respectively provided on the two sides. There is a gap 2548c between the first stop part 2548a and the second stop part 2548b. The limiting part 2336 is slidably accommodated in the gap 2548c, the first stop part 2548a is slidably accommodated in the first stop groove 2338a, and the first stop part 2548a is slidably accommodated in the second stop groove 2338b. In this embodiment, the first stop groove 2338a is provided on one side of the limiting part 2336 near the side support plate 2331. The first stop groove 2338a is an arc-shaped groove, which curves away from the side support plate 2331. The two opposite ends of the first stop groove 2338a pass through the opposite end faces of the limiting part 2336. The end of the first stop groove 2338a near the limiting part 2336 forms a first stop segment 2338c with the limiting part 2336; the second The stop groove 2338b is located on the opposite side of the limiting part 2336, away from the side support plate 2331. The second stop groove 2338b is an arc-shaped groove that curves away from the side support plate 2331. The end of the second stop groove 2338b near the positioning seat 251 passes through the end face of the limiting part 2336, and the end of the second stop groove 2338b away from the positioning seat 251 extends to the end face near the limiting part 2336 to form the second stop segment 2338d.

[0091] like Figure 42As shown, both the first stop portion 2548a and the second stop portion 2548b are disposed on the side of the connecting portion 2543 facing the side support member 233. The first stop portion 2548a is further away from the first rotating portion 2540 than the second stop portion 2548b, that is, the first stop portion 2548a is further away from the positioning seat 251 than the second stop portion 2548b. There is a gap 2548c between the first stop portion 2548a and the second stop portion 2548b. The limiting portion 2336 is slidably inserted into the gap 2548c. The first stop portion 2548a is slidably accommodated in the first stop groove 2338a, and the second stop portion 2548b is slidably accommodated in the second stop groove 2338b. Specifically, the first stop portion 2548a includes a first stop block protruding from the connecting portion 2543. The first stop block is slidably accommodated in the first stop groove 2338a and can stop at the first stop segment 2338c. The second stop portion 2548b is a second stop block protruding from the connecting portion 2543. The second stop block is slidably accommodated in the second stop groove 2338b and can stop at the second stop segment 2338d. Preferably, the surface of the first stop block that contacts the inner surface of the first stop groove 2338a is set as an arc surface to make the sliding of the first stop portion 2548a and the first stop groove 2338a smoother; the surface of the second stop block that contacts the inner surface of the second stop groove 2338b is set as an arc surface to make the sliding of the second stop portion 2548b and the second stop groove 2338b smoother.

[0092] In another embodiment of the present invention, after the rotating shaft device 22c is assembled, the second arc track 2541 of the rotating member 254 is rotatably accommodated in the second arc groove 2511 of the positioning seat 251, and the second rotating part 2542 of the rotating member 254 is accommodated in the receiving opening 2561 of the connecting member 256, and the second rotating part 2542 is rotatably connected to the connecting member 256. The limiting part 2336 of the side support member 233 is slidably inserted into the gap 2548c of the rotating member 254, and the limiting part 2336 is located in the gap 2548c between the first stop part 2548a and the second stop part 2548b. The first stop part 2548a is slidably accommodated in the first stop groove 2338a, and the second stop part 2548b is slidably accommodated in the second stop groove 2338b. The first arc track 2562 of the connector 256 is rotatably housed in the first arc groove 2335 of the side support 233. The sleeve 2642 of the linkage 264 is connected to the linkage seat 261 via a rotating shaft, and the connecting rod 2643 of the linkage 264 is slidably inserted into the guide space 2566 of the connector 256.

[0093] It should be noted that for ease of writing, Figure 42The schematic diagram of the rotating shaft device 22c only shows the positioning seat 251, linkage seat 261, a side support 233, a rotating part 254, a connecting part 256 and a linkage part 264; other components are omitted.

[0094] During the folding process, a pair of rotating members 254 and a pair of connecting members 256 rotate synchronously relative to the positioning seat 251 to move closer to each other, and a pair of linkage members 264 rotate synchronously relative to the linkage seat 261 to move closer to each other. At the same time, a pair of side support members 233 bend synchronously towards each other. Specifically, the rotating members 254 rotate relative to the positioning seat 251 via the second arc track 2541 and the second arc groove 2511 to drive the connecting members 256 to rotate relative to the positioning seat 251. The rotation of the connecting members 256 drives the corresponding rotating shaft 266 of the linkage member 264 to rotate, so that the first gear on the rotating shaft rotates, thereby driving the corresponding second gear to rotate, thus realizing the synchronous rotation of the two linkage members and their movement closer to each other. The connecting rod 2643 of each linkage member 264 slides in the guide space 2566. The first stop portion 2548a slides in the first stop groove 2338a toward the first stop segment 2338c until the first stop portion 2548a stops at the first stop segment 2338c, and the second stop portion 2548b slides away from the second stop segment 2338d in the second stop groove 2338b, so as to realize the mutual bending of the two side support members 233.

[0095] During the flattening process, a pair of rotating members 254 and a pair of connecting members 256 rotate synchronously relative to the positioning seat 251 to move away from each other, and a pair of linkage members 264 rotate synchronously relative to the linkage seat 261 to move away from each other. At the same time, a pair of side support members 233 flatten synchronously relative to each other. Specifically, the rotating members 254 rotate relative to the positioning seat 251 through the second arc track 2541 and the second arc groove 2511, thereby driving the connecting members 256 to rotate relative to the positioning seat 251. The rotation of the connecting members 256 drives the corresponding rotating shaft of the linkage member 264 to rotate, so that the first gear on the rotating shaft rotates, thereby driving the corresponding second gear to rotate, thus realizing the synchronous rotation of the two linkage members and their movement away from each other. The connecting rod 2643 of each linkage member 264 slides in the guide space 2566. The first stop portion 2548a slides away from the first stop segment 2338c in the first stop groove 2338a, and the second stop portion 2548b slides toward the second stop segment 2338d in the second stop groove 2338b until the second stop portion 2548b stops at the second stop segment 2338d, so as to achieve mutual flattening of the two side support members 233.

[0096] In other embodiments, the positions of the stop portion 2548 of the rotating member 254 of the rotating shaft device 22c in the above-described further embodiment and the stop groove 2338 of the side support member 233 can be interchanged. That is, the rotating member 254 is provided with a stop groove, and the side support member 233 is provided with a stop portion corresponding to the stop groove. The above are 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: A support mechanism, the support mechanism including a side support member, the side support member including a side support plate; A rotating mechanism, comprising a positioning seat, a rotating member, and a connecting member, wherein the end of the rotating member away from the connecting member is rotatably connected to the positioning seat, and the side support member away from the positioning seat is rotatably connected to the connecting member; and the rotating member is rotatably connected to the connecting member. A linkage assembly includes a linkage member slidably connected to the connecting member; the side support member is connected to the linkage member via a stop groove and a stop portion, or the side support member is connected to the rotating member via a stop groove and a stop portion; the side support member and the linkage member are slidably connected to a guide portion via a limiting groove; the rotation of the connecting member can drive the rotating member and the linkage member to rotate, and the rotation of the rotating member and the linkage member drives the side support member to move, so that the two side support members bend or unfold synchronously relative to each other.

2. The rotating shaft device according to claim 1, characterized in that, The side support member is provided with the limiting slide groove, and the rotating member is provided with the guide part that slides through the limiting slide groove.

3. The rotating shaft device according to claim 1, characterized in that, The stop groove is provided on the side support member, and the stop groove includes a first stop section and a second stop section. The stop part is provided on the linkage member. When the two side support members are in a fully folded state, the stop part is positioned at the first stop section. When the two side support members are in a flattened state, the stop part is positioned at the second stop section.

4. The rotating shaft device according to claim 1, characterized in that, The stop groove is provided on the side support member, and the stop groove includes a first stop section and a second stop section. The stop part is provided on the rotating member. When the two side support members are in a fully folded state, the stop part is positioned at the first stop section. When the two side support members are in a flattened state, the stop part is positioned at the second stop section.

5. The rotating shaft device according to claim 3 or 4, characterized in that, The stop groove includes a first stop groove and a second stop groove that are parallel to each other. The first stop groove includes a first stop segment, and the second stop groove includes a second stop segment. The stop part includes a first stop part and a second stop part. The first stop part is slidably accommodated in the first stop groove, and the second stop part is slidably accommodated in the second stop groove. When the first stop part is positioned at the first stop segment, the two side support members are in a fully folded state. When the second stop part is positioned at the second stop segment, the two side support members are in a flattened state.

6. The rotating shaft device according to claim 5, characterized in that, The end of the rotating member away from the connecting member is rotatably connected to the positioning seat, and the first stop segment is closer to the positioning seat than the second stop segment.

7. The rotating shaft device according to claim 6, characterized in that, The back of the side support plate has a protruding limiting part, and there is a gap between the first stop part and the second stop part. The limiting part is slidably accommodated in the gap, and the first stop groove and the second stop groove are respectively provided on the two opposite sides of the limiting part.

8. The rotating shaft device according to claim 7, characterized in that, Both the first stop groove and the second stop groove are arc-shaped grooves. The two opposite ends of the first stop groove pass through the opposite end faces of the limiting part. The end of the first stop groove near the limiting part forms the first stop segment with the limiting part. The end of the second stop groove near the positioning seat passes through the end face of the limiting part. The end of the second stop groove away from the positioning seat extends to the end face near the limiting part to form the second stop segment.

9. The rotating shaft device according to claim 3, characterized in that, The linkage includes a sleeve and a connecting rod connected to the outer peripheral wall of the sleeve. The stop part includes a first stop part and a second stop part, which are disposed on the side of the connecting rod facing the side support member.

10. The rotating shaft device according to claim 9, characterized in that, The connector is provided with a guide space corresponding to the linkage. The guide space extends along the rotation axis perpendicular to the linkage. The end of the connecting rod away from the sleeve is slidably inserted into the guide space. The first stop and the second stop are accommodated in the guide space.

11. The rotating shaft device according to claim 1, characterized in that, Alternatively, the guide slide is located on the side of the side support plate near the positioning seat, the limiting slide groove is located on the rotating member, and the guide slide slide is slidably inserted through the limiting slide groove.

12. The rotating shaft device according to claim 11, characterized in that, The limiting slide groove extends obliquely away from the positioning seat. The guide slide is a guide slide post passing through the limiting slide groove. The axis of the guide slide post is parallel to the axis of rotation between the rotating member and the positioning seat. The limiting slide groove includes a first limiting section and a second limiting section located at opposite ends. The first limiting section is farther away from the side support plate and the positioning seat than the second limiting section. When the two side support members are in a fully folded state, the guide slide is positioned at the first limiting section. When the two side support members are in a flattened state, the guide slide is positioned at the second limiting section.

13. The rotating shaft device according to claim 1, characterized in that, The side support member away from the positioning seat is connected to the connecting member 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 rotating member and the positioning seat.

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

15. The rotating shaft device according to claim 1, characterized in that, The linkage assembly further includes a linkage seat, which is detachably connected to the positioning seat. The rotation axis between the rotating member and the positioning seat is parallel to the rotation axis between the linkage member and the linkage seat.

16. The rotating shaft device according to claim 1, characterized in that, The rotating assembly further includes two rotating shafts and a gear combination disposed on the two rotating shafts. The two linkages are respectively fixedly sleeved on the two rotating shafts. The linkages rotate along the axis of the corresponding rotating shaft to drive the rotating shaft to rotate. The two linkages achieve synchronous folding or synchronous flattening through the gear combination.

17. The rotating shaft device according to claim 16, 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 connecting member achieves synchronous rotation through the linkage assembly. The pushing member rotates relative to the holding member. The elastic member is squeezed by the holding member and undergoes elastic deformation. The frictional resistance between the pushing member and the holding member positions the linkage member to achieve relative positioning of the side support member at a specific angle.

18. The rotating shaft device according to claim 17, characterized in that, 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 against each other, and the elastic member elastically pushes against the holding member.

19. 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 further includes a positioning member sleeved on the end of the rotating shaft away from the supporting member and a friction member sleeved on the rotating shaft. The friction member is located between the positioning member and the elastic member. The end of the elastic member away from the supporting member elastically abuts against the friction member so that the friction member abuts against the positioning member. The rotation of the rotating shaft drives the friction member to rotate relative to the positioning member.

20. A folding shell, characterized in that, The folding housing includes a pivot device as described in any one of claims 1-19 and two frames, the pivot device being located between the two frames, and the two frames being respectively connected to two connectors of the pivot device.

21. An electronic device, characterized in that, The electronic device includes a flexible element and a folding housing as described in claim 20, wherein the flexible element is disposed on the folding housing.

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