Rotating shaft device, folding housing and electronic device

Abstract

The application provides a rotating shaft device, which comprises a positioning seat and a rotating assembly. The rotating assembly comprises a first rotating mechanism and a second rotating mechanism. The first rotating mechanism and the second rotating mechanism each comprise a rotating piece and a driven piece. The rotating pieces of the two rotating mechanisms are rotatably connected with the positioning part respectively. The driven pieces of the two rotating mechanisms are rotatably connected with the positioning seat respectively. The driven piece and the rotating piece of the first rotating mechanism are slidably connected. The driven piece and the rotating piece of the second rotating mechanism are slidably connected. The linkage mechanism comprises a linkage piece arranged between the driven piece of the first rotating mechanism and the driven piece of the second rotating mechanism. The linkage piece is slidably connected with the driven piece of the first rotating mechanism and the driven piece of the second rotating mechanism through the cooperation of the eccentric shaft and the linkage groove. The application also relates to a folding shell and electronic equipment provided with the rotating shaft device.

Description

Technical Field

[0001] This invention relates to the field of flexible screen support, and more particularly to a pivot device for supporting a flexible screen, 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 equipment, flexible displays have emerged, and foldable screen devices equipped with flexible displays are becoming increasingly popular due to their unique shapes and diverse functions. Currently, folding solutions for flexible displays include inward folding and outward folding. Foldable screen devices in related technologies generally use hinge mechanisms for support; however, existing hinge mechanisms are relatively large, occupying a significant amount of internal space in the foldable screen device. 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, which includes a positioning seat and a rotating assembly. The rotating assembly includes a first rotating mechanism and a second rotating mechanism disposed on the positioning seat and arranged side by side. Both the first and second rotating mechanisms include a rotating member and a driven member. The rotating members of the first and second rotating mechanisms are rotatably connected to the positioning seat, and the driven members of the first and second rotating mechanisms are also rotatably connected to the positioning seat. The end of the driven member of the first rotating mechanism away from the positioning seat is slidably connected to the rotating member of the first rotating mechanism, and the end of the driven member of the second rotating mechanism away from the positioning seat is slidably connected to the rotating member of the second rotating mechanism. The linkage mechanism is slidably connected; the linkage mechanism includes a linkage member disposed between the driven member of the first rotating mechanism and the driven member of the second rotating mechanism, the linkage member being slidably connected to the driven member of the first rotating mechanism and the driven member of the second rotating mechanism respectively through the cooperation of an eccentric shaft and a linkage groove; when the rotating member of the first rotating mechanism rotates relative to the positioning seat, the driven member of the first rotating mechanism rotates relative to the positioning seat, the two eccentric shafts move in the two linkage grooves respectively, the linkage member moves relative to the positioning seat, causing the driven member of the second rotating mechanism to rotate relative to the positioning seat, so that the rotating members of the first rotating mechanism and the rotating members of the second rotating mechanism rotate relative to the positioning seat.

[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, and the two frames are respectively connected to two rotating parts of the rotating assembly of the pivot device.

[0006] This application also provides an electronic device, which includes a flexible screen, two frames and a rotating device. The rotating device is located between the two frames, and the rotating parts on opposite sides of the rotating device are respectively connected to the two frames. The flexible screen is disposed on the front of the two frames and the front of the rotating device.

[0007] In the present invention, the rotating component, driven component, and side support component of the rotating shaft device of the electronic device are all directly connected to the positioning base, which makes the structure of the rotating shaft device simple, the manufacturing cost low, and the various components of the rotating shaft device compactly connected. The overall width of the rotating shaft device is small, thereby reducing the internal space occupied by the rotating shaft device in the folding shell. This is not only beneficial to the layout of other components such as the motherboard or battery in the electronic device, but also beneficial to the miniaturization development. In addition, the rotating component is connected to the end of the positioning base, which makes the space occupied by the rotating component in the positioning base smaller. Attached Figure Description

[0008] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described 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 according to one embodiment of this application; Figure 2 yes Figure 1 An exploded view of the folding housing and flexible screen of the electronic device. Figure 3 yes Figure 2 A front view of the folding shell in the middle; Figure 4 yes Figure 3 An enlarged view of section IV; Figure 5 yes Figure 2 A further exploded diagram of the electronic devices in the diagram; Figure 6 yes Figure 5 Enlarged view of the rotating shaft device in the diagram; Figure 7 yes Figure 6 An exploded view of the three-dimensional structure of the rotating shaft device; Figure 8 yes Figure 7A three-dimensional structural diagram of the rotating shaft device from another perspective; Figure 9 yes Figure 7 An exploded three-dimensional structural diagram of the positioning seat, support components, and rotating components. Figure 10 yes Figure 9 A three-dimensional structural diagram of the positioning seat, support assembly, and rotating assembly from another perspective; Figure 11 yes Figure 9 A further exploded three-dimensional structural diagram of the positioning seat and rotating assembly; Figure 12 yes Figure 11 A three-dimensional structural diagram of the positioning seat and rotating assembly from another perspective; Figure 13 yes Figure 11 Enlarged view of part of the rotating shaft device in the diagram; Figure 14 yes Figure 12 Enlarged view of part of the rotating shaft device in the diagram; Figure 15 , Figure 16 , Figure 18 , Figure 20 and Figure 22 yes Figure 1 Partial three-dimensional sectional views of different parts of the electronic equipment in the document; Figure 17 yes Figure 16 A cross-sectional view of the electronic equipment in the document; Figure 19 yes Figure 18 A cross-sectional view of the electronic equipment in the document; Figure 21 yes Figure 20 A cross-sectional view of the electronic equipment in the document; Figure 23 yes Figure 22 A cross-sectional view of the electronic equipment in the document; Figure 24 yes Figure 1 A three-dimensional structural diagram of an electronic device folded to a certain angle; Figure 25 yes Figure 24 A three-dimensional structural diagram of the rotating shaft device in the diagram; Figure 26 yes Figure 25 A three-dimensional structural diagram of the rotating shaft device from another perspective; Figures 27-30 yes Figure 25 Partial sectional views of different parts of the rotating shaft device in the image; Figure 31 yes Figure 1A three-dimensional structural diagram of the electronic device in its fully folded state; Figure 32 yes Figure 31 A three-dimensional structural diagram of the rotating shaft device in the diagram; Figure 33 yes Figure 32 A three-dimensional structural diagram of the rotating shaft device from another perspective; Figures 34-37 yes Figure 31 Partial cross-sectional views of different parts of the electronic equipment. 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 screen 30 disposed on the folding housing 20. The flexible screen 30 can be, but is not limited to, flexible displays, flexible touchscreens, flexible touch displays, or other flexible components with corresponding functions, or a flexible component fixedly attached to a flexible support plate, such as a flexible display or flexible touchscreen attached to a flexible steel plate. The flexible screen 30 can be bent or flattened along with the folding housing 20. The folding housing 20 includes two frames 21 and a pivot device 22 connecting the two frames 21. The two frames 21 are respectively connected to opposite sides of the pivot device 22, and the two frames 21 are folded or flattened through the pivot device 22. The flexible screen 30 includes a bendable area 31 corresponding to the pivot device 22, and two non-bendable areas 33 connected to opposite sides of the bendable area 31. The two non-bendable areas 33 of the flexible screen 30 can be fixed to the front of the two frames 21, and the bendable area 31 is attached to the front of the pivot device 22. The bendable area 31 of the flexible screen 30 can be bent or flattened with the rotating shaft device 22.

[0014] The rotating shaft device 22 includes a positioning seat 23, a rotating assembly 25, and a support assembly 27. The positioning seat 23 includes a connecting portion 230 at its end. The rotating assembly 25 includes a first rotating mechanism 250 and a second rotating mechanism 250' arranged side by side on the positioning seat 23. The first rotating mechanism 250 and the second rotating mechanism 250' are located on opposite sides of the positioning seat 23. Both the first rotating mechanism 250 and the second rotating mechanism 250' include a rotating member 251 and a driven member 253 located on one side of the positioning seat 23. That is, the two rotating members 251 of the rotating assembly 25 are located on opposite sides of the positioning seat 23. The rotating members 251 of the first rotating mechanism 250 and the second rotating mechanism 250' are rotatably connected to the connecting portion 230. The driven member 253 of the first rotating mechanism 250 and the second rotating mechanism 250' are rotatably connected to the connecting portion 230. The rotating component 251 of the first rotating mechanism 250 is rotatably connected to the positioning seat 23. The end of the driven component 253 of the first rotating mechanism 250 away from the positioning seat 23 is slidably connected to the rotating component 251 of the first rotating mechanism 250. The end of the driven component 253 of the second rotating mechanism 250' away from the positioning seat 23 is slidably connected to the rotating component 251 of the second rotating mechanism 250'. The support assembly 27 includes a first side support 271 and a second side support 271' disposed on opposite sides of the positioning seat 23. The first side support 271 is rotatably connected to the rotating component 251 of the first rotating mechanism 250, and the second side support 271' is rotatably connected to the rotating component 251 of the second rotating mechanism 250'. The first side support 271 and the second side support 271' are movably connected to the positioning seat 23. The positioning base 23 also includes a strip-shaped positioning frame 231. Connecting portions 230 are provided at opposite ends of the positioning frame 231. Each connecting portion 230 is connected to a rotating component 25. That is, rotating components 25 are provided at opposite ends of the positioning frame 231. The first rotating mechanism 250 and the second rotating mechanism 250' of each rotating component 25 can be symmetrically arranged along the center line O of the length direction of the positioning base 23, or they can be asymmetrical. In this embodiment, the first rotating mechanism 250 and the second rotating mechanism 250' of each rotating component 25 are symmetrical along the center line O of the positioning base 23. The first side support member 271 is rotatably connected to the rotating components 251 of the two first rotating mechanisms 250 on one side of the positioning base 23, and the second side support member 271' is rotatably connected to the rotating components 251 of the two second rotating mechanisms 250' on the opposite side of the positioning base 23.

[0015] When the rotating members 251 of the first rotating mechanism 250 and the second rotating mechanism 250' of the rotating assembly 25 rotate relative to the positioning seat 23 and move closer to each other, the driven members 253 of the first rotating mechanism 250 and the driven members 253 of the second rotating mechanism 250' rotate relative to the positioning seat 23. The end of the driven member 253 of the first rotating mechanism 250 away from the positioning seat 23 slides relative to the rotating member 251 of the first rotating mechanism 250, and the end of the driven member 253 of the second rotating mechanism 250' away from the positioning seat 23 slides relative to the rotating member 251 of the second rotating mechanism 250'. 51. Sliding: The first side support 271 rotates relative to the rotating member 251 of the first rotating mechanism 250, and the second side support 271' rotates relative to the rotating member 251 of the second rotating mechanism 250', causing the driven member 253 of the first rotating mechanism 250 and the driven member 253 of the second rotating mechanism 250' to move closer together. The first side support 271 rotates relative to the rotating member 251 of the first rotating mechanism 250, and the second side support 271' rotates relative to the rotating member 251 of the second rotating mechanism 250'. The first side support 271 and the second side support... The components 271' rotate relative to the positioning seat 23 and move closer to each other, thereby achieving the mutual folding of the first side support 271 and the second side support 271'; when the rotating components 251 of the first rotation mechanism 250 and the second rotation mechanism 250' of the rotation assembly 25 rotate relative to the positioning seat 23 and move away from each other, the driven components 253 of the first rotation mechanism 250 and the driven components 253 of the second rotation mechanism 250' rotate relative to the positioning seat 23, and the end of the driven component 253 of the first rotation mechanism 250 away from the positioning seat 23 rotates relative to the first rotation mechanism 250. The rotating member 251 slides, and the end of the driven member 253 of the second rotating mechanism 250' away from the positioning seat 23 slides relative to the rotating member 251 of the second rotating mechanism 250'. The first side support member 271 rotates relative to the rotating member 251 of the first rotating mechanism 250, and the second side support member 271' rotates relative to the rotating member 251 of the second rotating mechanism 250'. The first side support member 271 and the second side support member 271' slide and rotate relative to the positioning seat 23 and move away from each other, realizing the mutual unfolding of the first side support member 271 and the second side support member 271'. When the first side support member 271 and the second side support member 271' are in a flattened state, the front surfaces of the first side support member 271 and the second side support member 271' are coplanar, so that the flexible screen 30 can fit against the front surfaces of the first side support member 271 and the second side support member 271'.

[0016] In this embodiment, the front side refers to the side facing the same direction as the light-emitting surface of the flexible screen 30, and the back side refers to the side facing away from the light-emitting surface of the flexible screen 30. The electronic device 100 is, for example, but not limited to, mobile phones, tablets, monitors, LCD panels, OLED panels, televisions, smartwatches, VR headsets, automotive displays, and any other products and components with display functions. In the description of this embodiment, "connection" includes both direct and indirect connections. For example, a connection between A and B includes a direct connection between A and B or a connection through a third element C or more other elements. Connections also include integrated connections and non-integrated connections. An integrated connection means that A and B are formed and connected as a single unit, while a non-integrated connection means that A and B are not formed and connected as a single unit.

[0017] The rotating assembly 25 of the rotating shaft device 22 of the present invention is disposed at the end of the positioning seat 23. The first rotating mechanism 250 and the second rotating mechanism 250' of the rotating assembly 25 are respectively disposed on opposite sides of the positioning seat 23. The rotating parts 251 of the first rotating mechanism 250 and the second rotating mechanism 250' are rotatably connected to the connecting portion 230 at the end of the positioning seat 23. One end of the driven part 253 of the first rotating mechanism 250 and the second rotating mechanism 250' is rotatably connected to the positioning seat 23. The driven part 253 of the first rotating mechanism 250 is rotatably connected to the positioning seat 23. The other end of 53 is slidably connected to the rotating member 251 of the first rotating mechanism 250. The other end of the driven member 253 of the second rotating mechanism 250' is slidably connected to the rotating member 251 of the second rotating mechanism 250'. The first side support member 271 is rotatably connected to the rotating member 251 of the first rotating mechanism 250. The second side support member 271' is rotatably connected to the rotating member 251 of the second rotating mechanism 250'. The first side support member 271 and the second side support member 271' are movably connected to the positioning seat 23 respectively. The rotating part 251 of the first rotating mechanism 250, located away from the positioning seat 23, and the rotating part 251 of the second rotating mechanism 250', located away from the positioning seat 23, are respectively connected to the frame 21. During the process of the two frames 21 folding and moving closer to each other or unfolding and moving away from each other, the first rotating mechanism 250 and the second rotating mechanism 250' respectively drive the first side support 271 and the second side support 271' to rotate relative to the positioning seat 23 and the first rotating mechanism 250 and the second rotating mechanism 250', so that the first side support 271 and the second side support 271' fold or unfold to each other, thereby realizing the folding or unfolding of the flexible screen 30.Existing hinge structures generally have a large width and occupy a lot of space, which is not conducive to the miniaturization of foldable screen phones. In this application, the rotating component 251 and driven component 253 of the first rotating mechanism 250 and the rotating component 251 and driven component 253 of the second rotating mechanism 250' are directly connected to the end of the positioning seat 23, and the first side support component 271 and the second side support component 271' are directly connected to the positioning seat 23. This makes the connection of the positioning seat 23, the rotating component 251, the driven component 253, the first side support component 271, and the second side support component 271' compact, and the overall width of the pivot device 22 is small. This reduces the space occupied by the pivot device 22 in the internal space of the foldable shell 20, which is beneficial not only to the motherboard or battery in the electronic device 100. The layout of other components facilitates miniaturization, and the connection reliability between the components of the rotating shaft device 22 is high, preventing the components of the electronic device 100 from shifting and damaging the flexible screen 30 when it is dropped. Secondly, the rotating shaft device 22 has fewer components, a simpler structure, and lower manufacturing costs. In addition, the first rotating mechanism 250 and the second rotating mechanism 250' of the rotating shaft device 22 are both located at the ends of the positioning seat 23, so that the middle part of the positioning seat 23 has a large space for accommodating other components. For example, a heat-conducting component is provided in the middle part of the positioning seat 23. The two ends of the heat-conducting component are respectively connected to the two frames. The heat generated by the motherboard, battery and other components of the electronic device 100 during operation is conducted to the two frames 21 through the heat-conducting component, which is beneficial to the heat dissipation of the electronic device 100.

[0018] like Figure 5 As shown, the frame 21 includes a front face 211, a back face 213, two opposite sides 214, and two end faces 215. A pivot device 22 connects the two adjacent end faces 215 of the two frames 21. The bendable area 31 of the flexible screen 30 is attached to the front face of the pivot device 22, and the non-bendable area 33 of the flexible screen 30 is connected to the front face 211 of the frame 21. Each frame 21 has a mounting groove 216 at one end of its front face 211 near the pivot device 22. The mounting groove 216 passes through the front face 211 of the frame 21, and its opposite ends extend to the opposite sides 214 near the frame 21. The opposite sides of the pivot device 22 are respectively accommodated in the mounting grooves 216 of the two frames 21, and each rotating component 251 is fixedly connected to the corresponding frame 21. The back face 213 of the frame 21 has several receiving spaces (not shown in the figure) for mounting electronic components such as circuit boards and batteries.

[0019] The structure of the first rotating mechanism 250 and the structure of the second rotating mechanism 250' may be the same or different, and the structure of the first side support 271 and the structure of the second side support 271' may be the same or different. In this embodiment, the structure of the first rotating mechanism 250 and the structure of the second rotating mechanism 250' are the same, and the structure of the first side support 271 and the structure of the second side support 271' are the same. Therefore, the following mainly describes the structure of the first rotating mechanism 250 and the structure of the first side support 271: like Figure 6 and Figure 7 As shown, the first rotation axis L1 between the rotating member 251 and the positioning seat 23 is parallel to the second rotation axis L2 between the driven member 253 and the positioning seat 23. The first rotation axis L1 on the same side of the positioning seat 23 is closer to the center line O of the positioning seat 23 than the second rotation axis L2, and the first rotation axis L1 is closer to the first side support member 271 than the second rotation axis L2. The center line O refers to the center line extending along the length direction of the positioning seat 23. Both the first rotation axis L1 and the second rotation axis L2 are located on the positioning seat 23. In this embodiment, both the first rotation axis L1 and the second rotation axis L2 are the axis lines of a solid shaft. Both solid shafts are connected to the positioning seat 23, thereby making the connection between the rotating member 251 and the driven member 253 and the positioning seat 23 compact and stable, thus reducing the width of the first rotating mechanism 250 and the width of the entire rotating shaft device 22. In this embodiment, the first rotating mechanism 250 and the second rotating mechanism 250' on opposite sides of the positioning base 23 are symmetrically arranged along the center line O. In other embodiments, the first rotating mechanism 250 and the second rotating mechanism 250' on opposite sides of the positioning base 23 may also be staggered.

[0020] Please refer to the following: Figures 7-14The connecting part 230 and the rotating part 251 are rotatably connected by a connecting shaft and a shaft hole. The axis of the connecting shaft is collinear with the corresponding first rotation axis L1. The connecting shaft is located in one of the connecting part 230 and the rotating part 251, and the shaft hole is located in the other of the connecting part 230 and the rotating part 251. In this embodiment, the connecting part 230 is provided with a connecting shaft 2301, and the rotating part 251 is provided with a shaft hole 2511. The connecting shaft 2301 rotatably passes through the shaft hole 2511. Specifically, the two opposite ends of the positioning frame 231 are respectively provided with connecting parts 230. The connecting part 230 is a connecting plate protruding from the end face of the positioning frame 231. The connecting plate is rectangular, and the two opposite ends of the side of each connecting part 230 away from the other connecting part 230 are respectively provided with connecting shafts 2301. Preferably, the connecting shaft 2301 is a shaft cylinder, and the two connecting shafts 2301 on the same connecting part 230 are symmetrically arranged along the center line O. The two opposite ends of the connecting portion 230 are rounded to facilitate the rotation of the rotating member 251. In other embodiments, the two opposite ends of the front of the positioning frame 231 are respectively provided with connecting portions 230, and the two opposite ends of the outer surfaces of the connecting portions 230 are respectively provided with connecting shafts 2301. In other embodiments, the two opposite ends of the connecting portion 230 are respectively provided with shaft holes, the axis of which is collinear with the first rotation axis L1, and the rotating member 251 is provided with a connecting shaft that rotatably passes through the corresponding shaft hole.

[0021] The driven member 253 and the positioning seat 23 are rotatably connected by a rotating shaft and a rotating hole. The axis of the rotating shaft is collinear with the corresponding second rotating axis L2. The rotating shaft is located on one of the driven member 253 and the positioning seat 23, and the rotating hole is located on the other. In this embodiment, the positioning seat 23 has rotating holes 2302 on opposite sides at its end. The axis of the rotating holes 2302 is collinear with the corresponding second rotating axis L2. The driven member 253 has a rotating shaft 2530 that rotatably passes through the rotating holes 2302. Specifically, the positioning frame 231 has rotating holes 2302 on opposite sides near the connecting part 230 at its end. The driven member 253 has a rotating shaft 2530 at one end, which is positioned relative to the driven member 253 and rotatably passes through the rotating holes 2302. In other embodiments, the positioning frame 231 has rotating shafts on opposite sides near the connecting part 230. The axis of the rotating shaft is collinear with the corresponding second rotating axis L2. One end of the follower 253 has a rotating hole, and the rotating shaft rotatably passes through the corresponding rotating hole.

[0022] The positioning frame 231 includes a positioning frame body 233 located in its middle and connecting blocks 235 located at opposite ends of the positioning frame body 233. The rotating member 251 and the driven member 253 of the first rotating mechanism 250 are rotatably connected to the connecting blocks 235, and the first side support member 271 and the second side support member 271' are movably connected to the connecting blocks 235. Specifically, the front of the positioning frame body 233 is provided with a storage groove 2332 along its length. The storage groove 2332 can be used to accommodate electronic devices originally installed in the frame body 21, thereby increasing the internal space of the frame body 21 to facilitate the layout of other components. In this embodiment, the connecting block 235 has a connecting portion 230 protruding from the center of its end face away from the positioning frame body 233 in the front direction. Two connecting shafts 2301 are located on the side of the connecting portion 230 away from the positioning frame body 233, and the two connecting shafts 2301 are symmetrical about the center line O of the positioning seat 23. The connecting block 235 has a pair of lugs 2351 spaced apart on opposite sides, and the rotating hole 2302 passes through the pair of lugs 2351. The connecting block 235 also has a clearance groove 2353 on opposite sides, which is used to accommodate one end of the driven member 253. In this embodiment, the connecting block 235 has a clearance groove 2353 between the pair of lugs 2351, and also has clearance grooves 2353 at opposite ends of the pair of lugs 2351. The positioning seat 23 has positioning grooves 2354 at opposite ends on its front side, and a receiving groove 2355 on the bottom surface of the positioning grooves 2354. The receiving groove 2355 extends along the length direction perpendicular to the positioning frame 233, and connects to the clearance groove 2353 between the pair of lugs 2351. Specifically, the front of the connecting block 235 has a positioning groove 2354 between the two pairs of lugs 2351, and the bottom surface of the connecting block 2355 has a receiving groove 2355. The two opposite ends of the receiving groove 2355 are respectively connected to the clearance grooves 2353 between the two pairs of lugs 2351. The bottom surface of the connecting block 2355 also has a positioning hole 2356. Preferably, the bottom surface of the positioning groove 2354 has positioning holes 2356 on the opposite sides of the receiving groove 2355.

[0023] A pair of spaced-apart connecting pieces 237 are provided at one end of the connecting block 235 near the positioning frame 233, that is, a pair of parallel connecting pieces 237 are provided at the intersection of the connecting block 235 and the positioning frame 233; each connecting piece 237 is perpendicular to the length direction of the positioning frame 233, and the first side support member 271 and the second side support member 271' are connected to the pair of connecting pieces 237. A second clearance groove 2371 is formed between the pair of connecting pieces 237. A protrusion 2372 is provided at each opposite end of the pair of connecting pieces 237, and a support shaft 2374 is provided between the two protrusions 2372 on the same side of the connecting block 235, and the axis of the support shaft 2374 is parallel to the first rotation axis L1. The front sides of the connecting block 235 are respectively provided with guide grooves 2357. The guide grooves 2357 extend along the length direction perpendicular to the positioning frame 231. Specifically, the front sides of the connecting block 235 are respectively provided with guide sliders 2358. The guide sliders 2358 are located between the connecting piece 237 and the lug 2351. The front side of each guide slider 2358 is provided with a guide groove 2357.

[0024] The rotating member 251 includes a rotating arm 2510 and a rotating portion 2515 connected to the rotating arm 2510. The end of the rotating arm 2510 away from the rotating portion 2515 is rotatably connected to the connecting portion 230 of the positioning seat 23 via a connecting shaft and a shaft hole. The connecting shaft is located on one of the rotating arm 2510 and the connecting portion 230, and the shaft hole is located on the other. The end of the driven member 253 away from the positioning seat 23 is slidably connected to the rotating portion 2515. In this embodiment, the end of the rotating arm 2510 away from the rotating portion 2515 is provided with a shaft hole 2511, and the axis of the shaft hole 2511 is collinear with the corresponding first rotation axis L1. A rotating plate 2512 protrudes from the end of the rotating arm 2510 away from the rotating portion 2515, and the shaft hole 2511 is located on the side of the rotating plate 2512. In this embodiment, the rotating arm 2510 is a rectangular rod, the rotating part 2515 is connected to the side of one end of the rotating arm 2510, and the rotating plate 2512 is disposed on the side of the rotating arm 2510 opposite to the rotating part 2515. Preferably, the end face of the rotating plate 2512 opposite to the rotating arm 2510 is provided with an arc surface to facilitate the rotation of the rotating component 251 relative to the positioning seat 23.

[0025] In other embodiments, the rotating piece 2512 may also be connected to the side of the rotating arm 2510 away from the rotating part 2515 and close to the rotating part 2515. The shaft hole 2511 is provided on the side of the rotating piece 2512 away from the rotating part 2515. The connecting shaft 2301 protrudes from the side of the connecting part 230 facing the positioning frame 233 and is rotatably inserted into the shaft hole 2511.

[0026] An anti-detachment groove and an anti-detachment rail are provided between the rotating arm 2510 and the connecting part 230. The cooperation between the anti-detachment rail and the anti-detachment groove can prevent the rotating arm 2510 from detaching from the connecting part 230. The anti-detachment groove is provided on one of the connecting part 230 and the rotating arm 2510, and the anti-detachment rail is provided on the other of the connecting part 230 and the rotating arm 2510. In this embodiment, the connecting part 230 is provided with an anti-detachment rail 2304, and the rotating arm 2510 is provided with an anti-detachment groove 2513. The anti-detachment rail 2304 is slidably inserted into the anti-detachment groove 2513 to prevent the anti-detachment rail 2304 from detaching from the anti-detachment groove 2513. Specifically, the connecting part 230 has arc-shaped anti-derailment rails 2304 protruding from its two opposite ends. The axis of the anti-derailment rails 2304 is collinear with the axis of the corresponding connecting shaft 2301. The rotating arm 2510 has an arc-shaped anti-derailment groove 2513 on its end face away from the rotating part 2515. The axis of the anti-derailment groove 2513 is collinear with the axis of the shaft hole 2511. The anti-derailment rails 2304 are rotatably inserted into the anti-derailment groove 2513.

[0027] In some embodiments, the connecting portion 230 is provided with an anti-detachment groove, and the rotating arm 2510 is provided with an anti-detachment rail. The anti-detachment rail is slidably inserted into the anti-detachment groove to prevent the anti-detachment rail from detaching from the anti-detachment groove. Specifically, the connecting portion 230 is provided with arc-shaped anti-detachment rails on opposite end faces, and the axis of the anti-detachment rail is collinear with the axis of the corresponding connecting shaft 2301. The rotating arm 2510 is provided with an arc-shaped anti-detachment rail on the end face away from the rotating portion 2515, and the axis of the anti-detachment rail is collinear with the axis of the shaft hole 2511. The anti-detachment rail is rotatably inserted into the anti-detachment groove.

[0028] The rotating part 2515 is located at the end of the rotating arm 2510 away from the positioning seat 23. A first side support 271 covers the rotating part 2515 of the first rotating mechanism 250, and a second side support 271' covers the rotating part 2515 of the second rotating mechanism 250'. The first side support 271 and the rotating part 251 of the first rotating mechanism 250 are rotatably connected through the cooperation of an arc groove and an arc rail. The second side support 271' and the rotating part 251 of the second rotating mechanism 250' are also rotatably connected through the cooperation of an arc groove and an arc rail. The arc groove is provided in one of the first side support member 271 and the rotating member 251 of the first rotating mechanism 250, and the arc rail is provided in the other of the first side support member 271 and the rotating member 251 of the first rotating mechanism 250. The arc groove is provided in one of the second side support member 271' and the rotating member 251 of the second rotating mechanism 250', and the arc rail is provided in the other of the second side support member 271' and the rotating member 251 of the second rotating mechanism 250'. The axis of the arc groove is parallel to the first rotation axis L1. In this embodiment, both the first side support 271 and the second side support 271' are rectangular plates. The side of the first side support 271 away from the positioning seat 23 is rotatably connected to the rotating component 251 of the first rotating mechanism 250. That is, the side of the first side support 271 away from the positioning seat 23 is rotatably connected to the rotating component 251 of the first rotating mechanism 250 through the cooperation of an arc groove and an arc rail. The side of the second side support 271' away from the positioning seat 23 is rotatably connected to the rotating component 251 of the second rotating mechanism 250. That is, the side of the second side support 271' away from the positioning seat 23 is rotatably connected to the rotating component 251 of the second rotating mechanism 250 through the cooperation of an arc groove and an arc rail. Specifically, the rotating part 2515 is a rectangular block, and an arc groove 2516 is provided at the connection between the rectangular block and the rotating arm 2510. The axis of the arc groove 2516 is parallel to the first rotation axis L1. The first side support 271 and the second side support 271' are both provided with arc rails 2710 on the side away from the positioning seat 23. The arc rails 2710 are rotatably inserted through the arc groove 2516.

[0029] In other embodiments, the rotating part 2515 is provided with an arc groove, the axis of which is parallel to the first rotation axis L1, and the first side support member 271 is provided with an arc rail, which is rotatably inserted in the arc groove.

[0030] In other embodiments, the rotating arm 2510 is provided with an arc groove, the axis of which is parallel to the first rotation axis L1, and the first side support 271 is provided with an arc rail, which is rotatably inserted in the arc groove.

[0031] In other embodiments, an arc track is provided at the connection between the rotating part 2515 and the rotating arm 2510. The axis of the arc track is parallel to the first rotation axis L1. An arc groove is provided on the first side support member 271, and the arc track is rotatably inserted through the arc groove.

[0032] In other embodiments, the rotating part 2515 is provided with an arc track, the axis of which is parallel to the first rotation axis L1, and the first side support member 271 is provided with an arc groove, in which the arc track is rotatably inserted.

[0033] In other embodiments, the rotating arm 2510 is provided with an arc rail, the axis of which is parallel to the first rotation axis L1, and the first side support member 271 is provided with an arc groove, in which the arc rail is rotatably inserted.

[0034] A rotating arm 2510 is connected to one end of the rotating part 2515 away from the positioning frame 233. The rotating arm 2510 protrudes from the rotating part 2515 and faces the surface of the first side support member 271. The rotating arm 2510 and the rotating part 2515 form a recess 2517, and the end of the first side support member 271 is accommodated in the recess 2517. When the first side support member 271 is accommodated in the recess 2517, the end face of the first side support member 271 approaches or contacts the corresponding rotating arm 2510. Preferably, the front of the rotating part 2515 is an inclined surface. When the first side support member 271 and the second side support member 271' are in a folded state, the back faces of the first side support member 271 and the second side support member 271' respectively adhere to the front faces of the rotating part 2515 of the first rotating mechanism 250 and the second rotating mechanism 250'. The rotating part 2515 has an inclined sliding groove 2518 on its front side. The two opposite ends of the sliding groove 2518 pass through the opposite sides of the rotating part 2515, dividing the rotating part 2515 into guide strips away from the rotating arm 2510. The driven member 253 and the rotating member 251 are slidably connected by a limiting groove and a limiting shaft. The axis of the limiting shaft is parallel to the first rotation axis L1. The limiting groove is provided in one of the driven member 253 and the rotating member 251, and the limiting shaft is provided in the other of the driven member 253 and the rotating member 251. In this embodiment, the end face of the rotating part 2515 facing away from the rotating arm 2510 is provided with an inclined limiting port 2519, that is, the limiting port 2519 is provided on the side of the guide strip facing away from the rotating arm 2510. The limiting port 2519 is connected to the sliding groove 2518. The limiting port 2519 extends obliquely from the front of the rotating part 2515 to the back near the rotating part 2515. The follower 253 is provided with a limiting shaft 2531, which slides through the limiting port 2519.

[0035] Furthermore, the limiting port 2519 includes a first limiting segment 2714a and a second limiting segment 2714b located at opposite ends. The first limiting segment 2714a is farther away from the positioning seat 23 than the second limiting segment 2714b. When the first side support member 271 and the second side support member 271' are flattened, the limiting shaft 2531 is limited to the first limiting segment 2714a. When the first side support member 271 and the second side support member 271' are folded, the limiting shaft 2531 is limited to the second limiting segment 2714b.

[0036] The follower 253 includes a hinge portion 2532 and a sliding portion 2534 located at opposite ends, and an intermediate portion 2535 connected between the hinge portion 2532 and the sliding portion 2534. The hinge portion 2532 is rotatably connected to the positioning seat 23 via a rotating shaft 2530, and the sliding portion 2534 is slidably connected to the corresponding rotating member 251 via a limiting shaft 2531. The middle part 2535 is a rectangular plate, and the hinge part 2532 consists of two hinge blocks spaced apart on one side of the rectangular plate. One hinge block is a cylinder with its axis parallel to the first rotation axis L1, and the other hinge block is an oblong column. An eccentric shaft 2536 is provided on the end face of the cylinder away from the oblong column. The axis of the eccentric shaft 2536 is parallel to the second rotation axis L2 at intervals. That is, the eccentric shaft 2536 is parallel to the second rotation axis L2 and parallel to the axis of the cylinder at intervals. A pushing part 2537 is protruding on the outer peripheral wall of the oblong column. Preferably, the pushing part 2537 is a protrusion on the follower 253, and the protrusion is located on the outer peripheral wall of the oblong column away from the sliding part 2534. The hinge portion 2532 has a first connecting hole 2538 along the axis of the cylinder, and the rotating shaft 2530 passes through the first connecting hole 2538. The axis of the eccentric shaft 2536 is parallel to the axis of the first connecting hole 2538. The sliding portion 2534 consists of two sliding blocks spaced apart on opposite sides of the rectangular plate. The sliding portion 2534 has a second connecting hole 2539 along a direction parallel to the first rotating axis L1, and the limiting shaft 2531 passes through the second connecting hole 2539.

[0037] Please refer to the following: Figures 6-10The rotating assembly 25 also includes a linkage mechanism 257, which is located between two driven members 253. One driven member 253 rotates relative to the positioning seat 23, causing the other driven member 253 to rotate synchronously relative to the positioning seat 23 via the linkage mechanism 257. Specifically, the linkage mechanism 257 includes an eccentric shaft 2536 and a linkage member 2570 on the driven member 253. The linkage member 2570 has linkage grooves 2571 at opposite ends, which extend in a direction perpendicular to the second rotation axis L2. The eccentric shafts 2536 on the two driven members 253 are slidably inserted into the two linkage grooves 2571 of the linkage member 2570, and the two linkage grooves 2571 are symmetrically arranged around the center of the linkage member 2570. When one of the driven members 253 rotates relative to the positioning seat 23, the eccentric shaft 2536 on the driven member 253 moves in the corresponding linkage groove 2571, thereby driving the linkage member 2570 to move along a direction perpendicular to the first rotation axis L1, so that the eccentric shaft 2536 on the other driven member 253 moves synchronously in the corresponding linkage groove 2571, thereby realizing the synchronous rotation of the other driven member 253 relative to the positioning seat 23. In this embodiment, the linkage member 2570 includes a linkage plate 2572 perpendicular to the second rotation axis L2, and linkage grooves 2571 are respectively provided at opposite ends of the linkage plate 2572 along its length direction; specifically, the linkage plate 2572 is a rectangular plate, and linkage grooves 2571 are respectively provided at opposite ends of the rectangular plate, with the linkage grooves 2571 extending along the length direction of the rectangular plate. Preferably, the opposite end faces of the linkage plate 2572 are provided with arc surfaces to facilitate the folding or flattening of the rotating shaft device 22.

[0038] Further, the linkage groove 2571 includes a first stop section 2571a and a second stop section 2571b located at opposite ends therein. The first stop section 2571a is farther away from the first rotation axis L1 than the second stop section 2571b, that is, the first stop section 2571a of the same linkage groove 2571 is farther away from the center line O of the positioning seat 23 than the second stop section 2571b. When the first side support member 271 and the second side support member 271' are in a flattened state, the eccentric shaft 2536 is limited to the first stop section 2571a. When the first side support member 271 and the second side support member 271' are in a folded state, the eccentric shaft 2536 is limited to the second stop section 2571b. Preferably, the linkage groove 2571 is waist-shaped and passes through the opposite two sides of the linkage plate 2572.

[0039] Compared to existing rotating shaft devices that typically achieve linkage through gear engagement, the linkage mechanism 257 in this invention achieves the synchronous folding or flattening of the two driven members 253 using only the linkage member 2570 and the eccentric shaft 2536 mounted on the driven member 253, thus realizing the linkage function of the rotating shaft device 22. Therefore, the linkage mechanism 257 in this application has fewer components, a simpler structure, and lower manufacturing costs; furthermore, the linkage mechanism 257 is smaller in size, reducing the width of the rotating shaft device 22 and consequently reducing the internal space occupied by the rotating shaft device 22 within the folding housing 20.

[0040] In this embodiment, the eccentric shaft 2536 is located on the side of the hinge portion 2532 away from the sliding portion 2534. The diameter of the eccentric shaft 2536 is equal to or slightly smaller than the width of the linkage groove 2571. During the rotation of the hinge portion 2532 relative to the positioning seat 23, the eccentric shaft 2536 slides along the linkage groove 2571 and abuts against the inner side of the linkage groove 2571, causing the linkage member 2570 to move in a direction perpendicular to the center line O of the positioning seat 23. In other embodiments, the eccentric shaft 2536 may also be located on the side of the hinge portion 2532 closer to the sliding portion 2534.

[0041] Preferably, the linkage 2570 and the positioning seat 23 are slidably connected by a guide groove 2357 and a guide rail 2574. The guide groove 2357 extends along the moving direction of the linkage 2570, that is, it extends along a direction perpendicular to the center line O of the positioning seat 23. The guide groove 2357 is provided on one of the linkage 2570 and the positioning seat 23, and the guide rail 2574 is provided on the other. In this embodiment, the guide groove 2357 is formed on the positioning seat 23, and the guide rail 2574 is provided on the linkage 2570. Specifically, guide rails 2574 are provided at opposite ends on one side of the linkage plate 2572. The guide rails 2574 extend along a length direction perpendicular to the linkage plate 2572, and the two guide rails 2574 are respectively close to the two linkage grooves 2571, that is, the two guide rails 2574 are located between the two linkage grooves 2571.

[0042] In other embodiments, the two guide rails 2574 can be respectively disposed on opposite sides of the linkage plate 2572, and the front of the positioning seat 23 is provided with guide grooves 2357 corresponding to the two guide rails 2574.

[0043] In other embodiments, the linkage plate 2572 may also have only one guide rail 2574, and the front of the positioning seat 23 is provided with a guide groove 2357 corresponding to the guide rail 2574.

[0044] In other embodiments, the linkage plate 2572 is provided with a guide groove along its length direction, and the positioning seat 23 is provided with a guide rail corresponding to the guide groove, the guide rail being slidably inserted into the guide groove.

[0045] The support assembly 27 also includes a central support 273 located between the first side support 271 and the second side support 271'. The central support 273 is connected to the linkage 2570, and moves with the linkage 2570. That is, the linkage 2570 drives the central support 273 to move along the guide groove 2357, so that the central support 273 moves closer to or further away from the positioning seat 23. Specifically, the central support 273 is a rectangular plate, and the two opposite ends of the back of the central support 273 are respectively provided with linkages 2570. When the first side support 271 and the second side support 271' are flattened, the front faces of the central support 273, the first side support 271, and the second side support 271' are coplanar. When the first side support 271 and the second side support 271' are folded, the front faces of the central support 273, the first side support 271, and the second side support 271' form a teardrop-shaped space. Preferably, the central support 273 has second clearance openings 2576 near its ends on opposite sides, which are used to avoid the abutment 2581.

[0046] Please refer to the following: Figure 6 and Figures 11-14 The rotating assembly 25 also includes a torque mechanism 258, which is disposed between two driven members 253. The torque mechanism 258 includes a pushing part 2537 disposed on at least one driven member 253, a pushing member 2581 slidably connected to the positioning seat 23, and an elastic member 2587. The elastic member 2587 pushes the pushing member 2581 and the pushing part 2537 against each other. When the driven member 253 rotates relative to the positioning seat 23, the frictional resistance between the pushing part 2537 and the pushing member 2581 positions the driven member 253 relative to the positioning seat 23. Specifically, the pushing member 2581 is slidably accommodated in the receiving groove 2355 of the positioning seat 23, and the elastic member 2587 is accommodated in the receiving groove 2355 of the positioning seat 23. The elastic member 2587 elastically pushes the pushing member 2581 and the pushing part 2537 against each other. Preferably, the elastic element 2587 is a spring with pre-tension. In other embodiments, the elastic element 2587 may be, but is not limited to, elastic plastic or elastic rubber.

[0047] In this embodiment, the torque mechanism 258 includes two abutting members 2581 spaced apart from each other. The two abutting members 2581 are located between the two driven members 253 of the rotating assembly 25. The elastic member 2587 is held by the two abutting members 2581, that is, the two opposite ends of the elastic member 2587 elastically push against the two abutting members 2581, so that the two abutting members 2581 abut against the two pushing portions 2537 respectively. Specifically, the two abutting members 2581 are respectively housed in the receiving groove 2355 at opposite ends, and the abutting members 2581 can slide along the receiving groove 2355. The elastic member 2587 is housed in the receiving groove 2355, and the two opposite ends of the elastic member 2587 abut against the two abutting members 2581, so that the two abutting members 2581 abut against the pushing portions 2537 of the two driven members 253 respectively. When the two driven members 253 rotate synchronously relative to the positioning seat 23, the frictional resistance between the two pushing parts 2537 and the two abutting parts 2581 respectively causes the two driven members 253 to be synchronously limited relative to the positioning seat 23.

[0048] The abutment member 2581 includes a first abutment top 2582 and a second abutment top 2583 facing the abutment portion 2537. The first abutment top 2582 is closer to the central support member 273 than the second abutment top 2583. When the first side support member 271 and the second side support member 271' are in a flattened state, the abutment portion 2537 is positioned at the first abutment top 2582 so that the driven member 253 is positioned relative to the positioning seat 23, and the first side support member 271 and the second side support member 271' remain in a flattened state. When the first side support member 271 and the second side support member 271' are in a folded state, the abutment portion 2537 is positioned at the second abutment top 2583 so that the driven member 253 is positioned relative to the positioning seat 23, and the first side support member 271 and the second side support member 271' remain in a folded state. The positioning refers to the following member 253 being stationary relative to the positioning seat 23 when it is not subjected to external force. Specifically, the abutting member 2581 includes an abutting plate, a first abutting top 2582 and a second abutting top 2583 are provided on the side of the abutting plate facing the pushing part 2537, and the elastic member 2587 abuts against the two abutting plates on the sides away from the pushing part 2537 at opposite ends.

[0049] In this embodiment, the first abutment 2582 is a first positioning groove provided on the abutment member 2581, and the second abutment 2583 is a second positioning groove provided on the abutment member 2581. The pushing part 2537 can be positioned in the first positioning groove or the second positioning groove, that is, the protrusion on the driven member 253 can be positioned in the first positioning groove or the second positioning groove. When the pushing part 2537 is positioned in the first positioning groove, the two driven members 253 remain in a flattened state, so that the first side support member 271 and the second side support member 271' remain in a flattened state; when the pushing part 2537 is positioned in the second positioning groove, the two driven members 253 remain in a folded state, so that the first side support member 271 and the second side support member 271' remain in a folded state.

[0050] In other embodiments, the pushing portion 2537 is a groove provided on the driven member 253, the first abutting top 2582 is a first protrusion provided on the abutting member 2581, and the second abutting top 2583 is a second protrusion provided on the abutting member 2581. The first protrusion and the second protrusion can be positioned in the groove respectively. When the first protrusion is positioned in the groove, the two driven members 253 remain in a flattened state, so that the two first side supports 271 and the second side supports 271' remain in a flattened state; when the second protrusion is positioned in the second positioning groove, the two driven members 253 remain in a folded state, so that the first side supports 271 and the second side supports 271' remain in a folded state.

[0051] Preferably, the abutment member 2581 further includes an intermediate abutment member 2584 disposed between the first abutment member 2582 and the second abutment member 2583. During the rotation of the driven member 253 relative to the positioning seat 23, the pushing part 2537 slides against the intermediate abutment member 2584. The frictional resistance between the pushing part 2537 and the intermediate abutment member 2584 positions the driven member 253 relative to the positioning seat 23, so that the first side support member 271 and the second side support member 271' have a hovering effect relative to the positioning seat 23, thereby giving the two frames 21 a hovering function. Specifically, the intermediate abutment member 2584 is disposed on the side of the abutment plate facing the pushing part 2537 and is located between the first abutment member 2582 and the second abutment member 2583.

[0052] The intermediate abutment top 2584 and the pushing part 2537 are slidably connected by an abutment groove and a protrusion. The abutment groove is provided on one of the abutment member 2581 and the driven member 253, and the protrusion is provided on the other of the abutment member 2581 and the driven member 253. In this embodiment, the abutment groove is provided on the abutment member 2581, and the pushing part 2537 is a protrusion that can slide in the abutment groove. The frictional resistance between the protrusion and the inner surface of the abutment groove positions the driven member 253 relative to the positioning seat 23. That is, when the driven member 253 is not subjected to external force, the frictional resistance between the pushing part 2537 and the intermediate abutment top 2584 positions the driven member 253 relative to the positioning seat 23 at any angle, so that the first side support member 271 and the second side support member 271' have a hovering effect, thereby giving the two frames 21 a hovering function.

[0053] In other embodiments, the pushing part 2537 is an abutting groove provided on the driven member 253, that is, the outer peripheral wall of the hinge part 2532 is provided with an abutting groove, and the middle abutting top 2584 is a protrusion provided on the abutting member 2581. The protrusion can slide along the abutting groove. The frictional resistance between the protrusion and the inner surface of the abutting groove positions the driven member 253 relative to the abutting member 2581 and positions the driven member 253 relative to the positioning seat 23. That is, when the driven member 253 is not subjected to external force, the frictional resistance between the protrusion and the abutting groove positions the driven member 253 relative to the positioning seat 23 at any angle, so that the first side support member 271 and the second side support member 271' have a hovering effect, thereby giving the two frames 21 a hovering function.

[0054] Preferably, the included angle between the driven member 253 and the positioning seat 23 is greater than or equal to 0 degrees and less than or equal to 90 degrees. That is, the included angle between the driven member 253 and the positioning seat 23 can be, but is not limited to, 25 degrees, 30 degrees, 35 degrees, 40 degrees, 45 degrees, 50 degrees, 55 degrees, 60 degrees, 70 degrees, or 80 degrees. The positioning of the driven member 253 relative to the positioning seat 23 enables the included angle between the two frames 21 and the positioning seat 23 to be greater than or equal to 0 degrees and less than or equal to 180 degrees. Specifically, when the included angle between the two frames 21 is 0 degrees, the electronic device 100 is in a folded state; when the included angle between the two frames 21 is 180 degrees, the electronic device 100 is in a flattened state. The two frames 21 can also be positioned relative to each other at any angle between 0 degrees and less than 180 degrees, that is, the hovering angle of the electronic device 100 is between 0 degrees and less than 180 degrees.

[0055] The torque mechanism 258 of the rotating shaft device 22 of this application includes a stop member 2581 and an elastic member 2587 disposed on the positioning seat 23, and a push part 2537 on the driven member 253. The frictional resistance between the push part 2537 and the stop member 2581 enables the first side support member 271 and the second side support member 271' of the rotating shaft device 22 to be positioned relative to the positioning seat 23, thereby realizing the hovering function of the electronic device 100. Moreover, the torque mechanism 258 has a simple and compact structure, occupies less space in the rotating shaft device 22, thereby reducing the width of the rotating shaft device 22 and reducing the space occupied by the folding housing 20.

[0056] The abutment member 2581 further includes a positioning post 2585 disposed on the side of the abutment plate opposite to the first abutment top 2582, and the end of the elastic member 2587 is sleeved on the positioning post 2585 to position the elastic member 2587. The abutment member 2581 also includes guide plates 2586 disposed on opposite sides of the abutment plate, the guide plates 2586 extending along the axial direction of the positioning post 2585, that is, the guide plates 2586 and the positioning post 2585 are located on the same side of the abutment plate, and the two guide plates 2586 are used to slidably contact the opposite sides of the receiving groove 2355 respectively. Further, the guide plates 2586 are provided with a guide flange on the side near the first abutment top 2582, and the guide flange slides along the surface of the positioning groove 2354 when the abutment member 2581 slides along the receiving groove 2355. Preferably, when the end of the elastic member 2587 is sleeved on the positioning post 2585, the two guide plates 2586 clamp the elastic member 2587.

[0057] The torque mechanism 258 also includes a mounting member 2588, which covers the abutment member 2581 and the elastic member 2587. The mounting member 2588 is connected to the positioning seat 23 so that the abutment member 2581 and the elastic member 2587 are installed in the positioning seat 23. Specifically, the mounting member 2588 is a plate body accommodated in the positioning groove 2354 of the positioning seat 23. The shape of the plate body is the same as the shape of the positioning groove 2354. In this embodiment, the positioning groove 2354 is a rectangular groove, and the mounting member 2588 is a rectangular plate positioned in the rectangular groove. The mounting member 2588 is provided with a through hole 2589 corresponding to the positioning hole 2356. A locking fastener, such as a screw, passes through the through hole 2589 and locks into the positioning hole 2356 so that the mounting member 2588 is connected to the positioning seat 23.

[0058] like Figures 6-10The first side support member 271 includes a rectangular support plate 2711. Arc rails 2710 are provided at opposite ends of the back side of the support plate 2711 on the side away from the positioning seat 23. Two spaced-apart support arms 2712 are provided on the back side of the support plate 2711 near the positioning seat 23. The two support arms 2712 are respectively close to opposite ends of the support plate 2711 and are movably inserted into the second clearance grooves 2371 at opposite ends of the positioning seat 23. The support arms 2712 are arc-shaped strips extending from the support plate towards the side away from the arc rails 2710. The support arm 2712 is provided with a limiting groove 2714 along its extension direction. The limiting groove 2714 is an arc-shaped groove, and the middle part of the limiting groove 2714 bends away from the support plate 2711. Further, the limiting groove 2714 includes a first limiting segment 2714a and a second limiting segment 2714b at its opposite ends. The first limiting segment 2714a is closer to the support plate 2711 than the second limiting segment 2714b. When the first side support member 271 and the second side support member 271' are in a flattened state, the support shaft 2374 on the positioning seat 23 is limited to the first limiting segment 2714a; when the first side support member 271 and the second side support member 271' are in a folded state, the support shaft 2374 is limited to the second limiting segment 2714b. Preferably, the end of the support arm 2712 away from the support plate 2711 is provided with a first clearance opening 2715. The first clearance openings 2715 on the two support arms 2712 at the same end of the positioning seat 23 are in opposite positions, that is, the first side of one support arm 2712 is provided with the first clearance opening 2715, and the second side of the other support arm 2712 is provided with the first clearance opening 2715, and the orientation of the first side and the second side is opposite. When the first side support member 271 and the second side support member 271' are in a flattened state, the ends of the two support arms 2712 at the same end of the positioning seat 23 away from the support plate 2711 cooperate with each other, that is, the end of one support arm 2712 is accommodated in the first clearance opening 2715 of the other support arm 2712, thereby reducing the space occupied by the support arm 2712 in the length direction of the positioning seat 23, making the connection between the components of the rotating shaft device 22 more compact, and increasing the space of the storage slot 2332 of the positioning seat 23 to accommodate more of its electronic components. The support plate 2711 has a support arm 2712 on one side, and the two opposite ends near the corresponding support arm 2712 are provided with a clearance groove 2716. The clearance groove 2716 is used to avoid the rotating part 251 and the driven part 253.

[0059] like Figure 7 and Figure 8As shown, the rotating shaft device 22 also includes a back cover 28, and the back of the positioning seat 23 is accommodated in the back cover 28. Specifically, the back cover 28 is a strip frame with a receiving space 280, and the positioning seat 23 is accommodated in the receiving space 280 and fixedly connected to the back cover 28. Preferably, the back cover 28 has an adhesive layer on the inner surface of the receiving space 280, and the positioning seat 23 is connected to the positioning seat 23 through this adhesive layer. The connection between the positioning seat 23 and the back cover 28 can also be achieved by, but is not limited to, screwing or snap-fitting.

[0060] Please refer to the following: Figures 6-13When assembling the rotating shaft device 22, the two opposite ends of the elastic element 2587 are respectively sleeved onto the positioning posts 2585 of the two abutment elements 2581, so that the two guide plates 2586 of the abutment elements 2581 clamp the elastic element 2587; the two abutment elements 2581 and the elastic element 2587 are housed in the receiving groove 2355 of the positioning seat 23, so that the side of the abutment element 2581 away from the elastic element 2587 faces the corresponding clearance groove 2353, that is, the first abutment top 2582, the second abutment top 2583 and the middle abutment top 2584 face the corresponding receiving groove 23. 55. The elastic element 2587 is elastically compressed and has a pre-elastic force; the connecting shaft 2301 at the end of the positioning seat 23 is inserted into the shaft hole 2511 of the corresponding rotating element 251, so that the two opposite ends of the positioning seat 23 are rotatably connected to two rotating elements 251 respectively, and the anti-derailment 2304 is rotatably inserted into the corresponding anti-derailment groove 2513 to prevent the connecting shaft 2301 from disengaging from the shaft hole 2511 during the rotation of the rotating element 251 relative to the positioning seat 23; the hinge portion 2532 of the driven element 253 is rotatably connected to the positioning seat 23. Specifically, the hinge portion 2532 is rotatably connected to the positioning seat 23. The hinge portion 2532 is inserted into the corresponding first clearance groove 2353 on the positioning seat 23, so that the first connecting hole 2538 of the hinge portion 2532 is aligned with the rotating hole 2302 of the positioning seat 23. The rotating shaft 2530 is passed through the rotating hole 2302 and the first connecting hole 2538, so that the driven member 253 is rotatably connected to the positioning seat 23. The sliding portion 2534 of the driven member 253 is accommodated in the sliding groove 2518 of the rotating member 251, so that the second connecting hole 2539 is aligned with the limiting port 2519 of the rotating member 251. The limiting shaft 2531 is passed through... The mounting member 2588 is inserted into the receiving groove 2355 of the positioning seat 23, and the fastener passes through the through hole 2589 of the mounting member 2588 and is locked in the corresponding positioning hole 2356, so that the torque mechanism 258 is installed on the positioning seat 23; the middle support member 273 is placed on the positioning seat 23, so that the guide rails 2574 at opposite ends of the middle support member 273 are respectively inserted into the corresponding guide grooves 2357, and the eccentric shaft 2536 of each follower 253 is inserted into the corresponding linkage groove 2571;The first side support 271 and the second side support 271' are respectively placed on the rotating members 251 on opposite sides of the positioning base 23, so that the arc rails 2710 at opposite ends of the first side support 271 are rotatably inserted into the arc grooves 2516 of the rotating member 251 of the first rotating mechanism 250, and the arc rails 2710 at opposite ends of the second side support 271' are rotatably inserted into the arc grooves 2516 of the rotating member 251 of the second rotating mechanism 250', and the first side support 271'... The two support arms 2712 of the first side support 271 are respectively inserted into the two second clearance slots 2371 of the positioning seat 23, and the two support arms 2712 of the second side support 271' are respectively inserted into the two second clearance slots 2371 of the positioning seat 23, so that each support shaft 2374 passes through the corresponding limiting slot 2714. At this time, the support shaft 2374 can slide and rotate through the corresponding limiting slot 2714. The end of the first side support 271 and the second side support 271' are accommodated in the clearance slot 2517.

[0061] The back of the positioning seat 23 is housed in the receiving space 280 of the back cover 28, and the positioning seat 23 is connected to the back cover 28. When the two first side supports 271 and the second side support 271' are in a flattened state, the limiting shaft 2531 is limited to the corresponding first limiting segment 2714a, the pushing part 2537 is limited to the corresponding first abutting top 2582, the support shaft 2374 is limited to the corresponding first limiting segment 2714a, and the eccentric shaft 2536 is located in the corresponding first stop segment 2571a, so that the rotating shaft device 22 is kept in a flattened state, that is, the front of the first side support 271, the front of the second side support 271' and the front of the middle support 273 are coplanar, and the distance between the middle support 273 and the front of the positioning seat 23 is the largest. When the first side support 271 and the second side support 271' are folded, the limiting shaft 2531 is limited to the corresponding second limiting segment 2714b, the pushing part 2537 is positioned at the corresponding second abutment top 2583, the support shaft 2374 is limited to the corresponding second limiting segment 2714b, and the eccentric shaft 2536 is located at the corresponding second stop segment 2571b, so that the rotating shaft device 22 is kept in a folded state, that is, the front of the first side support 271, the front of the second side support 271' and the front of the middle support 273 form a teardrop-shaped space, and the distance between the front of the middle support 273 and the front of the positioning seat 23 is minimized.

[0062] When the rotating members 251 on opposite sides of the positioning seat 23 rotate relative to the positioning seat 23 and move closer or further apart, the rotating members 251 drive the corresponding driven members 253 to rotate relative to the positioning seat 23 and move closer or further apart. The driven members 253 and the rotating members 251 slide relative to each other, the rotating members 251 and the corresponding side support members rotate relative to each other, and the support shaft 2374 moves in the corresponding limiting groove 2714 so that the first side support member 271 and the second side support member 271' fold or unfold relative to each other. Specifically, the rotating member 251 rotates relative to the positioning seat 23 via the connecting shaft 2301 and the corresponding shaft hole 2511. The driven member 253 rotates relative to the positioning seat 23 around the corresponding rotating shaft 2530, and the limiting shaft 2531 of the driven member 253 away from the positioning seat 23 slides in the corresponding limiting port 2519. The pushing part 2537 of the driven member 253 slides against the abutting member 2581 to move the pushing part 2537 between the first abutting top 2582, the intermediate abutting top 2584, and the second abutting top 2583. At the same time, the eccentric shaft 2536 of the driven member 253 slides in the corresponding linkage groove 2571 to drive the linkage member 25. 70 slides along the guide groove 2357 to realize the linkage of the rotating shaft device 22, and makes the middle support member 273 move closer to or away from the positioning seat 23. The first side support member 271 and the rotating member 251 of the first rotating mechanism 250 rotate through the cooperation of the arc rail 2710 and the guide rail 2574. The second side support member 271' and the rotating member 251 of the second rotating mechanism 250' rotate through the cooperation of the arc rail 2710 and the guide rail 2574. The support shaft 2374 rotates and slides in the corresponding limiting groove 2714 to realize the synchronous folding or synchronous unfolding of the first side support member 271 and the second side support member 271'.

[0063] like Figures 6-23 , Figures 25-30 and Figures 32-37When the rotating shaft device 22 is bent from its flattened state, one of the rotating members 251 rotates around the corresponding connecting shaft 2301 relative to the positioning seat 23 towards another rotating member 251. The anti-derailment 2304 moves in the corresponding anti-derailment groove 2513. One of the rotating members 251 drives the corresponding driven member 253 to rotate around the corresponding rotating shaft 2530 relative to the positioning seat 23, and the limiting shaft 2531 of the driven member 253 slides in the corresponding limiting port 2519, so that the driven member 253 moves towards another driven member 251. 53. The rotation of the driven member 253 relative to the positioning seat 23 drives the eccentric shaft 2536 to move in the corresponding linkage groove 2571, causing the linkage member 2570 to slide closer to the positioning seat 23 along the corresponding guide groove 2357. The linkage member 2570 drives the eccentric shaft 2536 of the other driven member 253 to move in the corresponding linkage groove 2571, causing the other driven member 253 to rotate synchronously relative to the positioning seat 23 around the corresponding rotation axis 2530, thereby realizing the two driven members 253 relative to the positioning seat 23. The two rotating parts 251 rotate synchronously and move closer to each other. Another driven part 253 drives the corresponding rotating part 251 to rotate around the corresponding connecting shaft 2301, so that the two rotating parts 251 rotate synchronously relative to the positioning seat 23 and move closer to each other. Simultaneously, during the rotation of the rotating part 251 relative to the positioning seat 23, the rotating part 251 rotates with the corresponding side support member through the cooperation between the arc rail 2710 and the arc groove 2516. The support shaft 2374 on the positioning seat 23 rotates within the limiting groove 271 of the corresponding support arm 2712. 4. Sliding and rotating, that is, the support shaft 2374 slides and rotates from the first limiting section 2714a of the limiting groove 2714 to the second limiting section 2714b, so that the first side support member 271 and the second side support member 271' on opposite sides of the positioning seat 23 approach each other until the support shaft 2374 is limited to the second limiting section 2714b of the limiting groove 2714. The front of the two first side support members 271 and the second side support member 271' and the front of the middle support member 273 form a teardrop shape in cross section.

[0064] During the bending process of the first side support 271 relative to the positioning seat 23, the arc rail 2710 rotates in the corresponding arc groove 2516. Simultaneously, the limiting shaft 2531 slides and rotates in the corresponding limiting opening 2519, causing the limiting shaft 2531 to move from the first limiting segment 2714a to the second limiting segment 2714b of the limiting opening 2519. Simultaneously, the eccentric shaft 2536 slides in the corresponding linkage groove 2571, causing the eccentric shaft 2536 to move from the first stop segment 2571a to the second stop segment 2571b of the linkage groove 2571, thereby driving the linkage member 2570 to move closer to the positioning seat 23 along the guide groove 2357. That is, the guide rail 2574 moves closer to the positioning seat 23 along the corresponding guide groove 2357. At the same time, the pushing part 2537 pushes the abutting member 2581 away from the first abutting part 2582, and then pushes... Part 2537 slides against the middle abutment top 2584, and the elastic member 2587 is squeezed by the abutment member 2581 and undergoes elastic deformation until the pushing part 2537 passes the middle abutment top 2584 and is positioned at the second abutment top 2583. The frictional resistance between the pushing part 2537 and the middle abutment top 2584 causes the driven member 253 to be positioned at any angle between 0 and 90 degrees relative to the positioning seat 23. At the same time, the support shaft 2374 slides and rotates from the first limiting section 2714a of the limiting groove 2714 to the second limiting section 2714b, so that the rotating members 251 on both sides of the positioning seat 23 and the driven members 253 on both sides of the positioning seat 23 move closer to each other, so that the front of the first side support member 271, the front of the second side support member 271' and the front of the positioning seat 23 form a space with a teardrop-shaped cross section. The angle formed by the synchronous rotation of the driven members 253 on both sides of the positioning seat 23 relative to the positioning seat 23 is directly proportional to the amount of movement of the linkage member 2570 relative to the positioning seat 23. Specifically, the larger the included angle between the two driven members 253, the greater the amount of movement of the linkage member 2570 relative to the positioning seat 23; the smaller the included angle between the two driven members 253, the smaller the amount of movement of the linkage member 2570 relative to the positioning seat 23. When the first side support member 271 and the second side support member 271' are in a flattened state, the included angle between the two driven members 253 is the largest, which is 180 degrees, and the distance between the linkage member 2570 and the positioning seat 23 is the largest. When the first side support member 271 and the second side support member 271' are in a completely folded state, the included angle between the two driven members 253 is the smallest, which is 0 degrees, and the distance between the linkage member 2570 and the positioning seat 23 is the smallest.

[0065] In other bending methods, the two rotating parts 251 can rotate together relative to the positioning seat 23 around their respective connecting shafts 2301 in opposite directions. Each of the two rotating parts 251 drives its corresponding driven part 253 to rotate relative to the positioning seat 23 around its corresponding rotating shaft 2530, causing them to move closer together. Simultaneously, the limiting shaft 2531 at the end of the driven part 253 away from the positioning seat 23 slides at its corresponding limiting port 2519, i.e., the limiting shaft 2531 moves from the first limiting segment 2714a to the second limiting segment 2714b. The driven part 253... The rotation of the positioning seat 23 causes the eccentric shaft 2536 to move in the corresponding linkage groove 2571, that is, the eccentric shaft 2536 is displaced from the first stop section 2571a to the second stop section 2571b of the linkage groove 2571, so that the linkage member 2570 slides along the corresponding guide groove 2357 toward the positioning seat 23; after the pushing part 2537 pushes the abutting member 2581 and disengages from the abutting top 2582, the pushing part 2537 slides against the intermediate abutting top 2584, and the elastic member 2587 is squeezed by the abutting member 2581 and undergoes elastic deformation. The shape is such that the pushing part 2537 passes the intermediate abutment top 2584 and is positioned at the second abutment top 2583. The frictional resistance between the pushing part 2537 and the intermediate abutment top 2584 causes the driven member 253 to be positioned relative to the positioning seat 23 at any angle between 0 degrees and 90 degrees; that is, the included angle between the two driven members 253 is between 0 degrees and 180 degrees. The rotating member 251 rotates with the corresponding side support member through the cooperation between the arc rail 2710 and the arc groove 2516. The support shaft 2374 on the positioning seat 23 rotates in the corresponding support arm 2. The support shaft 2374 slides and rotates in the limiting groove 2714 of 712, that is, the support shaft 2374 slides and rotates from the first limiting section 2714a of the limiting groove 2714 to the second limiting section 2714b, so that the first side support member 271 and the second side support member 271' on opposite sides of the positioning seat 23 approach each other until the support shaft 2374 is limited to the second limiting section 2714b of the limiting groove 2714. The front of the first side support member 271, the front of the second side support member 271' and the front of the middle support member 273 form a teardrop shape in cross section.

[0066] When the rotating shaft device 22 is flattened from its bent state, one of the rotating members 251 is unfolded relative to the positioning seat 23 away from the other rotating member 251 around the corresponding connecting shaft 2301. The anti-derailment 2304 moves in the corresponding anti-derailment groove 2513. One of the rotating members 251 drives the driven member 253 to rotate relative to the positioning seat 23 around the corresponding rotating shaft 2530, and the limiting shaft 2531 of the driven member 253 slides in the corresponding limiting port 2519, so that the driven member 253 moves away from the other driven member 251. 53; The rotation of the driven member 253 relative to the positioning seat 23 drives the eccentric shaft 2536 to move in the corresponding linkage groove 2571, causing the linkage member 2570 to slide away from the positioning seat 23 along the corresponding guide groove 2357. The linkage member 2570 drives the eccentric shaft 2536 of the other driven member 253 to move in the corresponding linkage groove 2571, causing the other driven member 253 to rotate synchronously relative to the positioning seat 23 around the corresponding rotation axis 2530, thereby realizing that the two driven members 253 rotate synchronously relative to the positioning seat 23. The first rotating member 251 rotates away from the second rotating member 251; the second driven member 253 drives the corresponding rotating member 251 to rotate around the corresponding connecting shaft 2301, so that the two rotating members 251 rotate synchronously relative to the positioning seat 23 and move away from each other; at the same time, during the rotation of the rotating member 251 relative to the positioning seat 23, the rotating member 251 rotates with the corresponding side support member through the cooperation between the arc rail 2710 and the arc groove 2516, and the support shaft 2374 on the positioning seat 23 rotates in the limiting groove 27 of the corresponding support arm 2712. 14. Sliding and rotating, that is, the support shaft 2374 slides and rotates from the second limiting section 2714b of the limiting groove 2714 to the first limiting section 2714a, so that the first side support member 271 and the second side support member 271' on opposite sides of the positioning seat 23 move away from each other until the support shaft 2374 is limited to the first limiting section 2714a of the limiting groove 2714. The front of the first side support member 271 and the second side support member 271' and the front of the middle support member 273 form a teardrop shape in cross section.

[0067] During the flattening process of the first side support 271 and the second side support 271' relative to the positioning seat 23, the arc track 2710 rotates in the corresponding arc groove 2516, while the limiting shaft 2531 slides and rotates in the corresponding limiting opening 2519, causing the limiting shaft 2531 to move from the second limiting segment 2714b of the limiting opening 2519 to the first limiting segment 2714a; simultaneously, the eccentric shaft 2536 moves in the corresponding linkage groove 25 Sliding in 71 causes the eccentric shaft 2536 to move from the second stop section 2571b of the linkage groove 2571 to the first stop section 2571a, thereby driving the linkage member 2570 to move away from the positioning seat 23 along the guide slide groove 2357, that is, the guide slide rail 2574 moves away from the positioning seat 23 along the corresponding guide slide groove 2357; at the same time, after the pushing part 2537 pushes the abutting member 2581 and disengages from the abutting part 2583, the pushing part 2537... 537 slides against the middle abutment top 2584, and the elastic member 2587 is squeezed by the abutment member 2581 and undergoes elastic deformation until the pushing part 2537 passes the middle abutment top 2584 and is positioned at the first abutment top 2582. The frictional resistance between the pushing part 2537 and the middle abutment top 2584 causes the driven member 253 to be positioned at any angle between 0 degrees and 90 degrees relative to the positioning seat 23. At the same time, the support shaft 2374 slides and rotates from the second limiting section 2714b of the limiting groove 2714 to the first limiting section 2714a, so that the rotating members 251 on both sides of the positioning seat 23 move away from each other and the driven members 253 on both sides of the positioning seat 23 move away from each other, so that the first side support member 271 and the second side support member 271' are smoothly flattened until the front of the first side support member 271, the front of the second side support member 271' and the front of the positioning seat 23 are coplanar. The larger the angle between the two driven members 253, the greater the amount of movement of the linkage member 2570 relative to the positioning seat 23; when the first side support member 271 and the second side support member 271' are in a flattened state, the angle between the two driven members 253 is the largest, which is 180 degrees, and the distance between the linkage member 2570 and the positioning seat 23 is the largest.

[0068] In other usage scenarios, the two rotating members 251 can rotate together around their respective connecting shafts 2301 relative to the positioning seat 23 in a direction away from each other. Each rotating member 251 drives its corresponding driven member 253 to rotate around its corresponding rotating shaft 2530 relative to the positioning seat 23, moving them away from each other. Simultaneously, the limiting shaft 2531 at the end of the driven member 253 away from the positioning seat 23 slides in its corresponding limiting port 2519, meaning the limiting shaft 2531 is displaced from the second limiting segment 2714b to the first limiting segment 2714. a; The rotation of the driven member 253 relative to the positioning seat 23 drives the eccentric shaft 2536 to move in the corresponding linkage groove 2571, that is, the eccentric shaft 2536 is displaced from the second stop section 2571b to the first stop section 2571a of the linkage groove 2571, so that the linkage member 2570 slides away from the positioning seat 23 along the corresponding guide groove 2357; at the same time, after the pushing part 2537 pushes the abutting member 2581 and disengages from the abutting part 2583, the pushing part 2537 slides against the intermediate abutting part 2584, and the elastic member 2587 is elastically deformed by the pressing member 2581 until the pushing part 2537 passes the intermediate abutment 2584 and is positioned at the first abutment 2582. The frictional resistance between the pushing part 2537 and the intermediate abutment 2584 causes the driven member 253 to be positioned at any angle between 90 degrees and 0 degrees relative to the positioning seat 23. The rotating member 251 rotates with the corresponding side support member through the cooperation between the arc rail 2710 and the arc groove 2516. The support shaft 2374 on the positioning seat 23 is in the corresponding support arm 2 The support shaft 2374 slides and rotates in the limiting groove 2714 of the 712, that is, the support shaft 2374 slides and rotates from the second limiting section 2714b of the limiting groove 2714 to the first limiting section 2714a, so that the first side support member 271 and the second side support member 271' on opposite sides of the positioning seat 23 move away from each other until the support shaft 2374 is limited to the first limiting section 2714a of the limiting groove 2714. At this time, the front of the first side support member 271 and the front of the second side support member 271' are flush with the front of the positioning seat 23.

[0069] Please refer to the following: Figures 1-6The installed pivot device 22 is placed between the two frames 21, and the opposite sides of the pivot device 22 are fixedly connected to the two frames 21 respectively. Specifically, the first rotating mechanism 250 and the second rotating mechanism 250' on opposite sides of the back cover 28 are respectively housed in the mounting grooves 216 of the two frames 21, and the end of the rotating member 251 away from the back cover 28 is fixedly connected to the frame 21. At this time, the front faces 211 of the two frames 21, the front faces of the first side support member 271, the second side support member 271', and the front faces of the middle support member 273 are coplanar. The back of the flexible screen 30 is connected to the front faces 211 of the two frames 21 and the front face of the pivot device 22; specifically, the bendable area 31 is attached to the front face of the pivot device 22, and the two non-bendable areas 33 are attached to the front faces 211 of the two frames 21 respectively. At this time, the rotating arm 2510 of the rotating component 251 is located on the outside of the flexible screen 30, that is, the rotating arm 2510 is not located on the back of the flexible screen 30. In other words, the rotating component 251 is located at the end of the positioning seat 23, which reduces the space occupied by the rotating component 251 on the front of the positioning seat 23. Therefore, the front of the positioning seat 23 has enough space for placing heat dissipation materials or flexible cables, etc., and the storage slot 2332 of the positioning seat 23 has a large space, which facilitates the positioning seat 23 to accommodate other components; since the rotating component 251, the driven component 253, and the first side Both the first side support 271 and the second side support 271' are directly connected to the positioning seat 23. Therefore, the connections between the components in the rotating shaft device 22 are compact, thereby reducing the overall width of the rotating shaft device 22, reducing the internal space occupied by the folding housing 20, which is beneficial for the layout of other components such as the motherboard or battery, and for the miniaturization of the electronic device 100. The rotating member 251 is rotatably connected to the positioning seat 23, and the driven member 253 is slidably connected to the rotating member 251. The rotation of the first side support 271 and the first rotating mechanism 250 is... The first side support 271' and the second side support 271' are rotatably connected, and the rotating part 251 of the second rotating mechanism 250' is rotatably connected. Therefore, the connection between the components of the rotating shaft device 22 is stable and firm, and the components are not easily displaced when the electronic device 100 is dropped, thus avoiding damage to the flexible screen 30. The rotating shaft device 22 realizes the synchronous folding or synchronous folding of the first side support 271 and the second side support 271' through the linkage mechanism 257, which is convenient to use and simple to operate. The rotating shaft device 22 realizes the synchronous folding or synchronous folding of the back cover 2 through the torque mechanism 258. The driven members 253 on both sides of the 8 are synchronously limited relative to the positioning seat 23. The frictional resistance between the pushing part 2537 and the middle abutting top 2584 makes the bendable area 31 of the flexible screen 30 positioned at any bending angle, so that the two frames 21 can be freely adjusted in the unfolded state, folded state and intermediate state. That is, the electronic device 100 can be positioned in the unfolded state, folded state and any intermediate state, so that the two frames 21 of the electronic device 100 have a hovering function from 0 degrees to 180 degrees, with a large hovering angle range.The intermediate state refers to the folded state of the electronic device 100 when the pushing part 2537 of the driven member 253 slides against the intermediate abutting top 2584 of the abutting member 2581, that is, the folded state of the electronic device 100 when the included angle between the two frames 21 is greater than 0 degrees and less than 180 degrees.

[0070] Please refer to the following: Figures 24-37When 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 first rotating mechanism 250 and the second rotating mechanism 250' connected to the two frames 21 to rotate relative to the positioning seat 23 and rotate towards each other. The rotating member 251 and the driven member 253 of the first rotating mechanism 250 are slidably connected through the cooperation of the limiting shaft 2531 and the limiting port 2519. The rotating member 251 and the driven member 253 of the second rotating mechanism 250' are slidably connected through the cooperation of the limiting shaft 2531 and the limiting port 2519. The positioning shaft 2531 is slidably connected to the limiting port 2519. The first side support 271 and the second side support 271' rotate relative to the rotating member 251 of the first rotating mechanism 250 and the second rotating mechanism 250', respectively. The first side support 271 and the second side support 271' are slidably and rotatably connected to the positioning seat 23 through the cooperation of the support shaft 2374 and the guide groove 2357, so as to realize the folding of the rotating shaft device 22. The bendable area 31 of the flexible screen 30 bends with the rotating shaft device 22.Specifically, a bending force is applied to one of the frame bodies 21, causing the corresponding rotating member 251 to rotate relative to the positioning seat 23, and the driven member 253 to rotate relative to the positioning seat 23. The limiting shaft 2531 of the driven member 253 slides in the corresponding limiting opening 2519, causing the rotating member 251 and the driven member 253 to rotate relative to the positioning seat 23 towards the side closer to the flexible screen 30. Simultaneously, the eccentric shaft 2536 of the driven member 253 moves in the corresponding linkage groove 2571, causing... The linkage 2570 slides along the corresponding guide groove 2357 toward the positioning seat 23. The linkage 2570 drives the eccentric shaft 2536 of the other driven member 253 to move in the corresponding linkage groove 2571, so that the other driven member 253 rotates synchronously relative to the positioning seat 23 around the corresponding rotation axis 2530, thereby realizing that the two driven members 253 rotate synchronously relative to the positioning seat 23 and move toward each other; the other driven member 253 drives the corresponding rotating member 251 to rotate around the corresponding connecting shaft 2301. This allows the two rotating parts 251 to rotate synchronously relative to the positioning seat 23 and move closer to each other. Simultaneously, the rotating parts 251 and their corresponding side supports rotate through the engagement of the arc track 2710 and the arc groove 2516. The support shaft 2374 on the positioning seat 23 slides and rotates within the limiting groove 2714 of the corresponding support arm 2712. Specifically, the support shaft 2374 slides and rotates from the first limiting section 2714a of the limiting groove 2714 to the second limiting section 2714b, causing the positioning seat 23... The first side support member 271 and the second side support member 271' on opposite sides move closer to each other until the support shaft 2374 is limited to the second limiting segment 2714b of the limiting groove 2714. The front of the first side support member 271, the front of the second side support member 271' and the front of the middle support member 273 form a teardrop-shaped cross section. The bendable area 31 of the flexible screen 30 bends with the rotating shaft device 22 until the bendable area 31 bends into a teardrop shape, thereby realizing the folding of the electronic device 100.

[0071] During the bending process of the electronic device 100, the central support 273 moves closer to the positioning seat 23, making the teardrop-shaped space formed by the front of the central support 273, the front of the first side support 271, and the front of the second side support 271' larger. This facilitates the bending area 31 of the flexible screen 30 to be bent into a teardrop shape, reducing the occupancy ratio of the bending area 31 after bending, thereby reducing the overall thickness of the electronic device 100.

[0072] In other bending methods of the electronic device 100, bending forces can be applied to both frames 21 simultaneously. The two frames 21 respectively drive the first rotating mechanism 250 and the second rotating mechanism 250' to rotate towards the side closer to the flexible screen 30, and drive the first side support member 271 and the second side support member to move closer to each other. The middle support member 273 moves away from the flexible screen 30, and the bending of the electronic device 100 is achieved through the rotating shaft device 22.

[0073] When it is necessary to flatten the electronic device 100, an unfolding force is applied to at least one of the two frames 21 of the electronic device 100, causing the first rotating mechanism 250 and the second rotating mechanism 250' connected to the two frames 21 to rotate relative to the positioning seat 23 in a direction away from each other. The rotating member 251 and the driven member 253 of the first rotating mechanism 250 slide against each other through the cooperation of the limiting shaft 2531 and the limiting port 2519. The rotating member 251 and the driven member 253 of the second rotating mechanism 250' slide against each other through the limiting shaft 2531 and the limiting port 2519. The shaft 2531 and the limiting port 2519 slide against each other. The first side support 271 and the second side support 271' rotate relative to the rotating part 251 of the first rotating mechanism 250 and the rotating part 251 of the second rotating mechanism 250', respectively. The first side support 271 and the second side support 271' slide and rotate with the positioning seat 23 through the cooperation of the support shaft 2374 and the guide groove 2357, so as to realize the unfolding of the rotating shaft device 22. The bendable area 31 of the flexible screen 30 flattens out with the rotating shaft device 22.Specifically, an unfolding force is applied to one of the frames 21, causing the corresponding rotating member 251 to rotate relative to the positioning seat 23. The rotating member 251 causes the driven member 253 to rotate relative to the positioning seat 23, and the limiting shaft 2531 of the driven member 253 slides in the corresponding limiting port 2519, causing the rotating member 251 and the driven member 253 to rotate relative to the positioning seat 23 away from the flexible screen 30. At the same time, the eccentric shaft 2536 of the driven member 253 moves in the corresponding linkage groove 2571. The movement causes the linkage 2570 to slide away from the positioning seat 23 along the corresponding guide groove 2357. The linkage 2570 drives the eccentric shaft 2536 of the other driven member 253 to move in the corresponding linkage groove 2571, so that the other driven member 253 rotates synchronously relative to the positioning seat 23 around the corresponding rotation axis 2530, thereby realizing that the two driven members 253 rotate synchronously relative to the positioning seat 23 and move away from each other; the other driven member 253 drives the corresponding rotating member 251 to rotate around the corresponding connecting shaft 2301. This allows the two rotating parts 251 to rotate synchronously relative to the positioning seat 23 and move away from each other. Simultaneously, the rotating parts 251 and their corresponding side supports rotate through the engagement of the arc track 2710 and the arc groove 2516. The support shaft 2374 on the positioning seat 23 slides and rotates in the limiting groove 2714 of the corresponding support arm 2712. That is, the support shaft 2374 slides and rotates from the second limiting section 2714b of the limiting groove 2714 to the first limiting section 2714a, causing the positioning seat 23 to move relative to the positioning seat 23. The first side support member 271 and the second side support member 271' on both sides move away from each other until the support shaft 2374 is limited to the first limiting segment 2714a of the limiting groove 2714, so that the positioning seat 23 unfolds relative to the first side support member 271 and the second side support member 271' on both sides until the first side support member 271 and the second side support member 271' and the positioning seat 23 are flattened, and the bendable area 31 of the flexible screen 30 unfolds with the rotating shaft device 22 until the flexible screen 30 is flattened.

[0074] In other ways of unfolding the electronic device 100, an outward pulling force can be applied to both frames 21 simultaneously. The two frames 21 respectively drive the first rotating mechanism 250 and the second rotating mechanism 250' to rotate relative to the side away from the flexible screen 30, so that the first side support member 271 and the second side support member 271' rotate relative to the side away from the flexible screen 30, and the unfolding of the electronic device 100 is realized through the rotating shaft device 22.

[0075] The rotating shaft device 22 of the electronic device 100 of the present invention achieves bending or unfolding through the rotating assembly 25. Since the rotating component 251 and the driven component 253 of the rotating assembly 25 are rotatably connected to the positioning seat 23, and the first side support 271 and the second side support 271' are connected to the positioning seat 23 through the support shaft 2374 and the guide groove 2357, the connection between the components in the rotating shaft device 22 can be made compact, thereby reducing the overall width of the rotating shaft device 22, reducing the internal space occupied by the folding shell 20, and facilitating the layout of other components such as the motherboard or battery. Secondly, the rotating shaft device 22 achieves synchronous folding or flattening of the first side support 271 and the second side support 271' through the linkage mechanism 257, which is convenient to operate. In addition, the rotating shaft device 22 achieves hovering through the torque mechanism 258, so that the two frames 21 of the electronic device 100 can achieve a large range of hovering function, that is, the included angle between the two frames 21 can be between 0 degrees and 180 degrees. Furthermore, when the electronic device 100 is in a flattened state, the eccentric shaft 2536 supports the linkage 2570, and the linkage 2570 supports the bendable area 31 of the flexible screen 30, so that the front of the first side support 271, the front of the second side support 271', and the front of the middle support 273 remain coplanar, which enables the side support plate to provide stable support for the flexible screen 30 and prevent the flexible screen 30 from sinking and being damaged.

[0076] The above are the embodiments of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the embodiments of the present invention, and these improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. A rotating shaft device, characterized in that, The rotating shaft device includes: Positioning seat; A rotating assembly, comprising a first rotating mechanism and a second rotating mechanism disposed on opposite sides of the positioning seat, each including a rotating member and a driven member. The rotating members of the first and second rotating mechanisms are rotatably connected to the positioning seat, and the driven members of the first and second rotating mechanisms are also rotatably connected to the positioning seat. The end of the driven member of the first rotating mechanism away from the positioning seat is slidably connected to the rotating member of the first rotating mechanism, and the end of the driven member of the second rotating mechanism away from the positioning seat is slidably connected to the rotating member of the second rotating mechanism. The linkage mechanism includes a linkage member disposed between the driven member of the first rotating mechanism and the driven member of the second rotating mechanism. The linkage member is slidably connected to the driven member of the first rotating mechanism and the driven member of the second rotating mechanism through the cooperation of an eccentric shaft and a linkage groove. When the rotating component of the first rotating mechanism rotates relative to the positioning seat, the driven component of the first rotating mechanism rotates relative to the positioning seat, the two eccentric shafts move in the two linkage slots respectively, the linkage component moves relative to the positioning seat, causing the driven component of the second rotating mechanism to rotate relative to the positioning seat, so that the rotating components of the first rotating mechanism and the rotating components of the second rotating mechanism rotate relative to the positioning seat.

2. The rotating shaft device according to claim 1, characterized in that, The positioning seat includes a connecting portion designed at its end, and the connecting portion is rotatably connected to the rotating member by a connecting shaft and a shaft hole. The connecting shaft is located in one of the connecting portion and the rotating member, and the shaft hole is located in the other of the connecting portion and the rotating member.

3. The rotating shaft device according to claim 2, characterized in that, It also includes a support assembly, which includes a first side support and a second side support disposed on opposite sides of the positioning seat. The first side support is rotatably connected to a rotating component of the first rotating mechanism, and the second side support is rotatably connected to a rotating component of the second rotating mechanism. The first side support and the second side support are movably connected to the positioning seat, respectively. The rotating component includes a rotating arm and a rotating part connected to the rotating arm. The end of the rotating arm away from the rotating part is rotatably connected to the connecting part through a connecting shaft and a shaft hole. The connecting shaft is disposed in one of the rotating arm and the connecting part, and the shaft hole is disposed in the other of the rotating arm and the connecting part. The end of the driven member away from the positioning seat is slidably connected to the rotating part.

4. The rotating shaft device according to claim 3, characterized in that, An anti-detachment groove and an anti-detachment rail are provided between the rotating arm and the connecting part. The anti-detachment rail and the anti-detachment groove cooperate to prevent the rotating arm from detaching from the connecting part. The anti-detachment groove is provided in one of the connecting part and the rotating arm, and the anti-detachment rail is provided in the other of the connecting part and the rotating arm.

5. The rotating shaft device according to claim 3, characterized in that, The rotating part is located at the end of the rotating arm away from the positioning seat. The end face of the first side support or the end face of the second side support is close to the corresponding rotating arm. The first side support and the second side support are rotatably connected to the corresponding rotating part through the cooperation of the arc groove and the arc rail. The arc groove is provided in one of the first side support and the rotating part, and the arc rail is provided in the other of the first side support and the rotating part. The second side support and the corresponding rotating part are provided with an arc groove, and the other of the second side support and the corresponding rotating part are provided with an arc rail.

6. The rotating shaft device according to claim 3, characterized in that, The rotating arm is connected to one end of the rotating part, the rotating arm protrudes from the surface of the rotating part facing the support assembly, the rotating arm and the rotating part form a clearance groove, and the end of the support assembly is accommodated in the clearance groove.

7. The rotating shaft device according to claim 1, characterized in that, The driven member and the positioning seat are rotatably connected by a rotating shaft and a rotating hole. The rotating shaft is located in one of the driven member and the positioning seat, and the rotating hole is located in the other of the driven member and the positioning seat.

8. The rotating shaft device according to claim 3, characterized in that, The driven member and the rotating member are slidably connected by a limiting groove and a limiting shaft. The limiting groove is provided in one of the driven member and the rotating member, and the limiting shaft is provided in the other of the driven member and the rotating member.

9. The rotating shaft device according to claim 8, characterized in that, The limiting groove includes a first limiting segment and a second limiting segment located at opposite ends thereof, wherein the first limiting segment is farther away from the positioning seat than the second limiting segment; when the two first side supports and the second side supports are in a flattened state, the limiting axis is located in the first limiting segment; when the first side supports and the second side supports are in a folded state, the limiting axis is located in the second limiting segment.

10. The rotating shaft device according to claim 1, characterized in that, The linkage mechanism is located between the driven member of the first rotating mechanism and the driven member of the second rotating mechanism. The driven member of the first rotating mechanism rotates relative to the positioning seat, and the linkage mechanism causes the driven member of the second rotating mechanism to rotate synchronously relative to the positioning seat; or the driven member of the second rotating mechanism rotates relative to the positioning seat, and the linkage mechanism causes the driven member of the first rotating mechanism to rotate synchronously relative to the positioning seat.

11. The rotating shaft device according to claim 1, characterized in that, The eccentric shaft is disposed on the driven member, and the linkage member has linkage grooves at opposite ends. The linkage grooves extend in a direction perpendicular to the second rotation axis. The axis of the eccentric shaft is parallel to the second rotation axis. The eccentric shafts of the driven members of the first rotation mechanism and the second rotation mechanism are slidably inserted into the two linkage grooves of the linkage member. When the driven member of the first rotation mechanism rotates relative to the positioning seat, the eccentric shaft on the driven member of the first rotation mechanism moves in the corresponding linkage groove, and the linkage member moves in a direction perpendicular to the second rotation axis, so that the eccentric shaft on the driven member of the second rotation mechanism moves synchronously in the corresponding linkage groove, thereby realizing that the driven member of the second rotation mechanism rotates synchronously relative to the positioning seat.

12. The rotating shaft device according to claim 3, characterized in that, The linkage groove includes a first stop section and a second stop section located at opposite ends therein, wherein the first stop section is farther away from the center line of the positioning seat than the second stop section; when the first side support member and the second side support member are in a flattened state, the eccentric axis limit is located at the first stop section, and when the first side support member and the second side support member are in a folded state, the eccentric axis limit is located at the second stop section.

13. The rotating shaft device according to claim 1, characterized in that, The linkage component and the positioning seat are slidably connected by a guide groove and a guide rail. The guide groove extends along the moving direction of the linkage component. The guide groove is provided in one of the linkage component and the positioning seat, and the guide rail is provided in the other of the linkage component and the positioning seat.

14. The rotating shaft device according to claim 3, characterized in that, The support assembly further includes a central support located between the first side support and the second side support, the central support being connected to the linkage and moving with the linkage; when the first side support and the second side support are in a flattened state, the front of the central support, the front of the first side support, and the front of the second side support are coplanar.

15. The rotating shaft device according to claim 1, characterized in that, The driven members on opposite sides of the positioning seat are provided with the pushing part, and two abutting members are provided between the driven members of the first rotating mechanism and the driven members of the second rotating mechanism. The elastic member is held by the two abutting members, and the two abutting members abut against the two pushing parts respectively.

16. The rotating shaft device according to claim 15, characterized in that, The abutting member includes a first abutting top and a second abutting top facing the pushing part, with the first abutting top being closer to the support assembly than the second abutting top; when the first side support member and the second side support member are in a flattened state, the pushing part is positioned at the first abutting top; when the first side support member and the second side support member are in a folded state, the pushing part is positioned at the second abutting top.

17. The rotating shaft device according to claim 16, characterized in that, The pushing part is a protrusion provided on the driven member, the first abutting top is a first positioning groove provided on the abutting member, and the second abutting top is a second positioning groove provided on the abutting member. The protrusion can be positioned in the first positioning groove or the second positioning groove.

18. The rotating shaft device according to claim 16, characterized in that, The abutting member further includes an intermediate abutting member disposed between the first abutting member and the second abutting member. During the rotation of the positioning seat, the abutting part slides against the intermediate abutting member, and the frictional resistance between the abutting part and the intermediate abutting member positions the driven member relative to the positioning seat.

19. The rotating shaft device according to claim 18, characterized in that, The intermediate abutment top and the abutment part are slidably connected by an abutment groove and a protrusion. The abutment groove is provided in one of the abutment member and the driven member, and the protrusion is provided in the other of the abutment member and the driven member.

20. The rotating shaft device according to claim 18, characterized in that, The included angle formed by the fixed rotation of the driven member relative to the positioning seat is greater than or equal to 0 degrees and less than or equal to 90 degrees.

21. The rotating shaft device according to claim 1, characterized in that, The positioning seat is provided with a receiving groove, which extends along the moving direction of the abutment. The abutment is slidably accommodated in the receiving groove. The torque mechanism also includes a mounting member, which covers the abutment and is connected to the positioning seat.

22. A folding shell, characterized in that, The folding housing includes a pivot device as described in any one of claims 1-21 and two frames, the pivot device being located between the two frames, and the two frames being respectively connected to the rotating component of the first rotating mechanism and the rotating component of the second rotating mechanism of the pivot device.

23. An electronic device, characterized in that, The electronic device includes a flexible screen, two frames, and a rotating shaft device as described in any one of claims 1-21. The rotating shaft device is located between the two frames. The rotating components of the first rotating mechanism and the second rotating mechanism on opposite sides of the rotating shaft device are respectively connected to the two frames. The flexible screen is disposed on the front of the two frames and the front of the rotating shaft device.

24. The electronic device according to claim 23, characterized in that, The flexible screen covers the first side support and the second side support of the rotating shaft device, and the rotating arm of the rotating component of the first rotating mechanism and the rotating arm of the rotating component of the second rotating mechanism are both located outside the flexible screen.

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