Rotating shaft device, folding housing and electronic device

Abstract

The application provides a rotating shaft device, which comprises a positioning seat, a rotating part, a connecting part, a linkage part and a distance sensor. The opposite ends of the rotating part are rotatably connected to the positioning seat and the connecting part respectively. One end of the linkage part is rotatably connected to the positioning seat. The end of the linkage part away from the positioning seat is slidably connected to the connecting part. The relative position of the distance sensor and the connecting part is fixed. The relative distance between the distance sensor and the linkage part changes in the process that the linkage part slides relative to the connecting part. The distance sensor is used to obtain the movement information data of the sliding of the linkage part relative to the distance sensor, so as to realize the rotating angle detection of the rotating shaft device. The application also provides a folding shell provided with the rotating shaft device and an electronic equipment.

Description

Technical Field

[0001] This invention relates to the field of hinges for flexible screens, and more particularly to a hinge device, a foldable housing provided with the hinge device, and an electronic device provided with the foldable housing. Background Technology

[0002] With the development of display devices, foldable electronic devices with flexible displays have emerged; currently, the bendable area of ​​these displays is generally supported by a hinge mechanism. Modern hinge mechanisms typically use a combination of magnets and Hall effect sensors to detect the folding or unfolding angle of the foldable electronic device. However, the magnets not only occupy internal space within the hinge mechanism but also increase the weight of the foldable electronic 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, a rotating component, a connecting component, a linkage component, and a distance sensor. The two opposite ends of the rotating component are rotatably connected to the positioning seat and the connecting component, respectively. One end of the linkage component is rotatably connected to the positioning seat, and the end of the linkage component away from the positioning seat is slidably connected to the connecting component. The relative position of the distance sensor and the connecting component is fixed. During the sliding process of the linkage component relative to the connecting component, the relative distance between the distance sensor and the linkage component changes. The distance sensor is used to obtain the sliding movement information data of the linkage component relative to the distance sensor, so as to realize the rotation angle detection of the rotating shaft device.

[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 connectors of the pivot device. The distance sensor of the pivot device is connected to one of the frames.

[0006] This application also provides an electronic device, which includes a flexible component, a motherboard, and a folding housing. The flexible component is disposed on the folding housing, the motherboard is disposed within the frame of the folding housing, and the distance sensor of the rotating shaft device is electrically connected to the motherboard.

[0007] Compared to related technologies where the flexible display screen of foldable electronic devices uses a combination of magnets and Hall sensors for angle detection during unfolding, the magnets not only occupy internal space of the hinge mechanism but also increase the weight of the foldable electronic device. In this application, during the unfolding or folding process, the linkage component slides relative to the connecting component. The distance sensor obtains the movement information data of the linkage component relative to the distance sensor and transmits it to the motherboard. The processor on the motherboard receives the movement information data and calculates the rotation angle of the frame relative to the positioning seat to achieve hinge mechanism rotation angle detection. The processor controls the dynamic image display of the flexible component based on the rotation angle, thereby enabling the electronic device to play animation effects during unfolding or folding. Since the hinge device of this application uses a distance sensor that eliminates the need for a magnet, there is no need to allocate space for a magnet on the hinge device, which is beneficial for the layout of other components of the hinge device. Secondly, the distance sensor can improve detection accuracy. During the folding or flattening process of the hinge device, the flexible component will not exhibit any undesirable effects such as sluggishness or delay, thereby improving angle detection accuracy, animation effects, and user experience. In addition, the absence of a magnet on the hinge device prevents the hinge device from attracting foreign objects from its exterior, preventing objects from entering the foldable electronic device during the rotation of the hinge device. Furthermore, the omission of a magnet on the hinge device not only reduces the overall weight of the hinge device but also reduces manufacturing process steps, saving costs. Attached Figure Description

[0008] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0009] Figure 1 This is a three-dimensional structural schematic diagram of an electronic device in one embodiment of this application;

[0010] Figure 2 yes Figure 1 An exploded three-dimensional structural diagram of the folding housing and flexible components of an electronic device.

[0011] Figure 3 yes Figure 2 An exploded view of the three-dimensional structure of the folded shell in the diagram;

[0012] Figure 4 yes Figure 3 A three-dimensional structural diagram of the rotating shaft device in the diagram;

[0013] Figure 5 yes Figure 4 An exploded three-dimensional structural diagram of the rotating shaft device in the diagram;

[0014] Figure 6 yes Figure 5 A three-dimensional exploded view of the rotating shaft device from another perspective;

[0015] Figure 7 yes Figure 5 An enlarged three-dimensional structural diagram of one of the rotating shaft mechanisms in the rotating shaft device;

[0016] Figure 8 yes Figure 7 A three-dimensional structural diagram of the rotating shaft mechanism from another perspective;

[0017] Figure 9 yes Figure 7 An exploded view of the three-dimensional structure of the rotating shaft mechanism in the diagram;

[0018] Figure 10 yes Figure 9 A three-dimensional structural diagram of the rotating shaft mechanism from another perspective;

[0019] Figure 11 yes Figure 9 An exploded three-dimensional structural diagram of the rotating component of the rotating mechanism in the diagram;

[0020] Figure 12 yes Figure 11 A three-dimensional structural diagram of the rotating component from another perspective;

[0021] Figure 13 yes Figure 9 An exploded view of the three-dimensional structure of the folding aid component;

[0022] Figure 14 yes Figure 13 A three-dimensional structural diagram of the folding aid component from another perspective;

[0023] Figures 15-17 yes Figure 2 Cross-sectional views of different parts of the folded shell;

[0024] Figure 18 yes Figure 1 A three-dimensional structural diagram of an electronic device when it is bent to 90 degrees;

[0025] Figure 19 yes Figure 18 A cross-sectional view of the electronic equipment in the document;

[0026] Figure 20 yes Figure 1 A three-dimensional structural diagram of the electronic device in its fully folded state;

[0027] Figure 21 yes Figure 20 A cross-sectional view of the electronic equipment in the document;

[0028] Figure 22 This is a schematic diagram showing the change in distance between the centerline of the rotating shaft and the distance sensor during the rotation of the linkage and rotating parts of the rotating shaft device of this application;

[0029] Figure 23 This is a graph showing the changes in the rotation angle and stroke of the linkage component of the rotating shaft device in this application;

[0030] Figure 24 This is a schematic diagram of the structure of an electronic device in another embodiment of this application. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] 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.

[0034] Please refer to the following: Figures 1 to 6In one embodiment of this application, the electronic device 100 includes a folding housing 20, a flexible member 30 disposed on the folding housing 20, and a mainboard 40 disposed within the cavity of the folding housing 20. The flexible member 30 is electrically connected to the mainboard 40. The flexible member 30 can be a flexible display screen, a flexible touch screen, a flexible touch display screen, or other flexible components with corresponding functions, or a flexible component fixedly attached to a flexible support plate, such as a flexible display screen or a flexible touch screen attached to a flexible steel plate. The flexible member 30 bends or flattens with the folding housing 20. The folding housing 20 includes two frames 21 and a pivot device 22 connecting the two frames 21. The flexible member 30 includes a bendable region 31 corresponding to the pivot device 22, and two non-bendable regions 33 connected to opposite sides of the bendable region 31. The two non-bendable regions 33 of the flexible member 30 can be attached to the front of the two frames 21 respectively, and the bendable region 31 is attached to the front of the pivot device 22. The bendable area 31 of the flexible component 30 can be bent or flattened with the rotating shaft device 22. The rotating shaft device 22 includes a support assembly 23, a rotating assembly 25, a folding aid assembly, a back cover 28, and a distance sensor 29; in this embodiment, the distance sensor 29 is fixedly connected to one of the frames 21 and electrically connected to the main board 40. The folding aid assembly includes a linkage assembly 26 and a limiting mechanism 27. The linkage assembly 26 is connected to the rotating assembly 25, and the limiting mechanism 27 is connected to the linkage assembly 26. In this embodiment, the linkage assembly 26 is located between the rotating assembly 25 and the limiting mechanism 27. The support assembly 23 includes a central support member 231 and side support members 233 located on opposite sides of the central support member 231. The bendable area 31 of the flexible component 30 is in contact with the front of the central support member 231 and the front of the side support members 233.The rotating assembly 25 includes a positioning seat 251 and a rotating mechanism 253 disposed on opposite sides of the positioning seat 251. The positioning seat 251 includes a first positioning seat 251a and a second positioning seat 251b connected to the first positioning seat 251a. The rotating mechanism 253 includes a rotating member 254 and a connecting member 256 rotatably connected to the rotating member 254. The linkage assembly 26 includes a third positioning seat 261 and a linkage member 264 rotatably connected to opposite sides of the third positioning seat 261. The third positioning seat 261 is connected to one end of the second positioning seat 251b. The opposite ends of the rotating member 254 are rotatably connected to the positioning seat 251 and the connecting member 256, respectively. One end of the linkage member 264 is rotatably connected to the positioning seat 251. One end of the positioning base 251 is slidably connected to the corresponding connector 256. The side support 233 is slidably connected to the linkage 264, and the side support 233 is rotatably connected to the connector 256. The distance sensor 29 corresponds to one of the linkages 264 and is fixed to the frame 21. The connector 256 is fixedly connected to the frame 21. That is, the positions of the distance sensor 29 and the corresponding connector 256 are relatively fixed, and the distance sensor 29 faces the corresponding linkage 264. During the sliding process of the linkage 264 relative to the connector 256, the relative distance between the distance sensor 29 and the corresponding linkage 264 changes. The distance sensor 29 is used to obtain the movement information data of the linkage 264 relative to the distance sensor 29. Specifically, the frame 21 drives the connector 256 to rotate relative to the positioning seat 251. The rotation of the connector 256 drives the rotating member 254 and the linkage member 264 to rotate relative to the positioning seat 251 and the third positioning seat 261, respectively. The rotation of the rotating member 254 and the linkage member 264 drives the side support member 233 to move, so that the two side support members 233 bend or unfold synchronously.

[0035] During the rotation of the linkage 264 relative to the positioning seat 251, that is, during the rotation of the linkage 264 relative to the third positioning seat 261, the relative distance between the linkage 264 and the distance sensor 29 changes. The distance sensor 29 obtains the sliding movement information data of the linkage 264 relative to the distance sensor 29 and transmits it to the motherboard 40. The processor on the motherboard 40 receives the movement information data and calculates the rotation angle of the frame 21 relative to the positioning seat 251, thereby obtaining the angle value between the two frames 21, so as to realize the playback of animation effects during the unfolding or folding of the electronic device 100. The animation effects can be, but are not limited to, a peacock spreading its tail display animation, a particle line spiraling upward animation, etc.

[0036] The distance sensor 29 is located at the end of the linkage 264 away from the positioning seat 251. In this embodiment, the two frames 21 of the electronic device 100 are respectively fixedly connected to the two connecting members 256 of the rotating shaft device 22. The distance sensor 29 is disposed on one of the linkage members 264 in the frame 21. The linkage member 264 includes an end face 2601 facing the distance sensor 29, and the distance sensor 29 corresponds to the end face 2601 of the linkage member 264. The frame 21 drives the rotating member 254 to rotate relative to the positioning seat 251 through the connecting member 256. The rotation of the connecting member 256 and the rotating member 254 drives the linkage member 264 to rotate relative to the third positioning seat 261, so that the two side support members 233 of the support assembly 23 can be bent or unfolded synchronously with the rotation mechanism 253 and the linkage member 264. At the same time, the linkage member 264 slides relative to the connecting member 256 to change the relative distance between the end face 2601 of the linkage member 264 and the distance sensor 29. Specifically, during the folding process of one of the linkage components 264 relative to the positioning seat 251, the relative distance between the distance sensor 29 and the end face 2601 of the linkage component 264 gradually increases; during the flattening process of the linkage component 264 relative to the positioning seat 251, the relative distance between the distance sensor 29 and the end face 2601 of the linkage component 264 gradually decreases; the distance sensor 29 obtains the movement information data of the linkage component 264 relative to the distance sensor 29 and transmits it to the motherboard 40. The processor on the motherboard 40 receives the movement information data and calculates the rotation angle of the frame 21 relative to the positioning seat 251, thereby obtaining the included angle value between the two frames 21. That is, there is a one-to-one correspondence between the movement information data of the linkage component 264 relative to the connecting member 256 and the rotation angle of the frame 21 relative to the positioning seat 251. The processor controls the flexible component 30 to display animation effects according to the included angle value. The flexible component 30 bends or flattens with the side support member 233, and the bendable area 31 can be bent into a teardrop shape.

[0037] In this embodiment, the rotation angle range of the linkage 264 relative to the third positioning seat 261 is 0 degrees to 180 degrees, and the rotation angle range of the frame 21 relative to the positioning seat 251 is 0 degrees to 180 degrees. That is, the rotation angle range of one frame 21 relative to the other frame 21 is 0 degrees to 180 degrees. When both frames 21 are fully flattened, the rotation angle of the frame 21 relative to the positioning seat 251 is 0 degrees, meaning the rotation angle of the linkage 264 relative to the third positioning seat 261 is 0 degrees. At this time, the relative distance L0 between the linkage 264 and the distance sensor 29 (see [reference]). Figure 15When both frames 21 are fully folded, the rotation angle of the frame 21 relative to the positioning seat 251 is 180 degrees, that is, the rotation angle of the linkage 264 relative to the third positioning seat 261 is 180 degrees. At this time, the relative distance L2 between the linkage 264 and the distance sensor 29 (see [reference]). Figure 21 L2>L0, where L0 is the minimum relative distance between end face 2601 and distance sensor 29, and L2 is the maximum relative distance between end face 2601 and distance sensor 29.

[0038] In this embodiment, the front side refers to the side facing the same direction as the light-emitting surface of the flexible component 30, and the back side refers to the side facing away from the light-emitting surface of the flexible component 30. The electronic device 100 is, for example, but not limited to, mobile phones, tablets, displays, LCD panels, OLED panels, televisions, smartwatches, VR headsets, automotive displays, and any other products and components with display functions. In the description of this embodiment, "connection" includes both direct and indirect connections. For example, a connection between A and B includes a direct connection between A and B or a connection through a third element C or more other elements. Connections also include integrated connections and non-integrated connections. An integrated connection means that A and B are integrally formed and connected, while a non-integrated connection means that A and B are not integrally formed and connected.

[0039] Compared to related technologies where foldable electronic devices use a combination of magnets and Hall sensors to achieve animation effects during the unfolding process, this new technology faces several drawbacks. First, the Hall sensor is typically mounted on the motherboard, while the magnet is housed within the hinge mechanism. The Hall sensor detects changes in the magnetic field position relative to the magnet during folding or unfolding, using this information to determine the rotation angle of the foldable electronic device and thus enable animation playback. Second, the magnetic force of the magnet attenuates significantly in space, requiring a sufficiently large magnet to meet accuracy requirements, thus occupying a considerable amount of space within the hinge mechanism. Third, the Hall sensor's accuracy is limited, leading to sluggishness or delays in the foldable flexible display during repeated folding or unfolding movements, negatively impacting the user experience. Finally, the magnet mounted on the hinge mechanism easily attracts magnetic foreign objects from outside the device, which can easily enter the foldable electronic device during rotation, potentially damaging it. The rotating shaft device 22 of the electronic device 100 of this application includes a distance sensor 29 electrically connected to the motherboard 40, a connector 256 fixedly connected to the frame 21, a rotating member 254 rotatably connected to the positioning seat 251 and the connector 256 at opposite ends, and a linkage member 264 rotatably connected to the positioning seat 251. The end of the linkage member 264 away from the positioning seat 251 is slidably connected to the connector 256. The distance sensor 29 is fixed to the frame 21 and faces the end face 2601 of the linkage member 264 away from the positioning seat 251. During the unfolding or folding process of 100, the linkage 264 slides relative to the connector 256. The distance sensor 29 obtains the movement information data of the linkage 264 relative to the distance sensor 29 and transmits it to the motherboard 40. The processor on the motherboard 40 receives the movement information data and calculates the rotation angle of the frame 21 relative to the positioning seat 251. The processor controls the dynamic image display of the flexible component 30 according to the rotation angle, thereby realizing the playback of animation effects during the unfolding or folding process of the electronic device 100. Since the rotating device 22 of this application uses a distance sensor 29, it eliminates the need for a magnet, meaning there is no need to allocate space for the magnet on the rotating device 22, which is beneficial for the layout of other components of the rotating device 22. Secondly, the distance sensor 29 can improve detection accuracy. During the folding or flattening process of the rotating device 22, the flexible component 30 will not exhibit any undesirable effects of sluggishness or delay, improving angle detection accuracy, animation effects, and user experience. In addition, the absence of a magnet on the rotating device 22 prevents the rotating device 22 from attracting foreign objects from its exterior, preventing objects from entering the folding electronic device during the rotation of the rotating device 22. Furthermore, omitting the magnet on the rotating device 22 not only reduces the overall weight of the rotating device 22 but also reduces manufacturing process steps, saving costs.

[0040] like Figures 4-6 As shown, the rotating shaft device 22 in this embodiment includes a support assembly 23, three rotating assemblies 25, three linkage assemblies 26, and three limiting mechanisms 27. Each rotating assembly 25 is connected to one linkage assembly 26 and one limiting mechanism 27 to form a combined structure. That is, the rotating shaft device 22 includes three of the above-mentioned combined structures, wherein two of the combined structures are respectively disposed at opposite ends of the back of the support assembly 23, and the other combined structure is disposed in the middle of the back of the support assembly 23. The distance sensor 29 faces the end face of a linkage member 264 of one of the linkage assemblies 26.

[0041] In some embodiments, the rotating shaft device 22 may also include a support component 23, a rotating component 25, a linkage component 26, and a limiting mechanism 27. The rotating component 25, the linkage component 26, and the limiting mechanism 27 are connected to form a combined structure, which is connected to the back side of the support component 23. The distance sensor 29 faces the end face of a linkage member 264 of the linkage component 26.

[0042] In some embodiments, the rotating shaft device 22 may also include a support assembly 23, two rotating assemblies 25, two linkage assemblies 26, and two limiting mechanisms 27; one rotating assembly 25 is connected to one linkage assembly and one limiting mechanism 27 to form a combined structure, and the other rotating assembly 25 is connected to another linkage assembly 26 and another limiting mechanism 27 to form a combined structure, with the two combined structures spaced apart from each other on the back side of the support assembly 23. The distance sensor 29 faces the end face of a linkage member 264 of one of the linkage assemblies 26.

[0043] In some embodiments, the rotating shaft device 22 may also include a support component 23, three or more rotating components 25, three or more linkage components 26, and three or more limiting mechanisms 27. The three or more rotating components 25 are disposed on the back side of the support component 23 and arranged at intervals along the length direction of the support component 23. The three or more linkage components 26 are respectively connected to the three or more rotating components 25, and the three or more limiting mechanisms 27 are respectively connected to the three or more linkage components 26. The distance sensor 29 faces the end face of a linkage member 264 of one of the linkage components 26.

[0044] like Figures 1 to 3As shown, the connecting parts 256 on opposite sides of the rotating shaft device 22 are fixedly connected to the two frames 21 respectively. The connecting parts 256 and the frames 21 can be fixed by, but not limited to, screws, snap-fits, or adhesives. The distance sensor 29 is fixedly connected to the end face 2601 of one of the frames 21 corresponding to one of the linkage parts 264. When one frame 21 is folded or unfolded relative to the other frame 21, it can drive the corresponding rotating mechanism 253 to rotate relative to the positioning seat 251. The rotating mechanism 253 drives the two side support parts 233 to rotate and slide synchronously relative to the positioning seat 251 through the linkage component 26 until the two side support parts 233 and the middle support part 231 are simultaneously bent into a teardrop shape or simultaneously unfolded into a horizontal shape. The bendable area 31 of the flexible part 30 is folded into a teardrop shape or unfolded into a horizontal shape along with the bendable area 31. During the above process, the linkage 264 slides relative to the connector 256, and the distance sensor 29 obtains the movement information data of the sliding between the end face 2601 of the linkage 264 and the distance sensor 29, and transmits the movement information data to the motherboard 40.

[0045] like Figure 2 and Figure 3 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 end faces 215 of the two frames 21. The non-bending area 33 of the flexible member 30 is connected to the front face 211 of the frame 21. Each frame 21 has a receiving groove 216 on its end face 215 facing the pivot device 22. The receiving groove 216 passes through the front face 211 of the frame 21, and its opposite ends extend to the opposite sides 214 of the frame 21. The opposite sides of the pivot device 22 are respectively accommodated in the receiving grooves 216 of the two frames 21, and each connector 256 is fixedly connected to the corresponding frame 21. The connector 256 and the frame 21 can be fixed by, but not limited to, snap-fit, screw-fit, or adhesive bonding. In this embodiment, the frame 21 has several connecting holes 2161 on the bottom surface of the receiving groove 216. The connector 256 is connected to the connecting holes 2161 by fasteners, so that the connector 256 is fixedly connected to the frame 21. One of the frames 21 has a positioning port 2163 near the receiving groove 216. The positioning port 2163 communicates with the receiving groove 216 and is used to position the distance sensor 29. The back side 213 of the frame 21 has several receiving spaces (not shown in the figure). The receiving spaces are used to install electronic components such as the motherboard 40 and the battery.

[0046] In other embodiments, the distance sensor 29 may be connected to the frame 21 by means of, but not limited to, screwing, snap-fitting, or gluing.

[0047] like Figures 5-6As shown, the central support member 231 is a rectangular plate, which includes a front side 2311 and a back side 2312 facing away from the front side 2311. A countersunk hole 2313 is provided on the front side 2311 of the central support member 231, and the countersunk hole 2313 passes through the back side 2312. The side support plate 2331 is a strip plate, which includes a front side 2332 and a back side 2333 facing away from the front side 2332. The back side 233 of the side support plate 2331 is provided with a rotating part 2333 and a limiting part 2336. The rotating part 2333 and the limiting part 2336 can be fixedly connected to the side support plate 2331 by means of, but not limited to, snap-fit, screw-fit, or adhesive bonding. The rotating part 2333 and the limiting part 2336 and the side support plate 2331 can also be integrally formed. In this embodiment, the back surface 2333 of the side support member 233 is provided with three pairs of rotating portions 2334 and three limiting portions 2336. The three pairs of rotating portions 2334 are respectively spaced apart from each other on the back surface 2333, and the three limiting portions 2336 are respectively spaced apart from each other on the back surface 2333, with a limiting portion 2336 provided between each pair of rotating portions 2334. Specifically, two pairs of rotating portions 2334 are respectively provided at opposite ends of the back surface 2333 of the side support member 233, and another pair of rotating portions 2334 are provided near the middle of the back surface 2333 of the side support member 233. A limiting portion 2336 is provided between each pair of rotating portions 2334. Each limiting portion 2336 is located on the side away from the central support member 231.

[0048] In some embodiments, the side support member 233 may also include a pair of rotating parts 2334 and a limiting part 2336. The pair of rotating parts 2334 may protrude from any position on the back surface 2333 of the side support member 233, and the limiting part 2336 is disposed between the pair of rotating parts 2334. A combined structure consisting of a rotating component 25, a linkage component 26 and a limiting mechanism 27 is provided between the side support member 233 and the back cover 28.

[0049] In some embodiments, the side support member 233 may also include two pairs of rotating portions 2334 and two limiting portions 2336. The two pairs of rotating portions 2334 are spaced apart and protrude from the back surface 2333 of the side support member 233, and a limiting portion 2336 is provided between each pair of rotating portions 2334. Preferably, the two pairs of rotating portions 2334 are respectively protruding from opposite ends of the back surface 2333 of the side support member 233, and a limiting portion 2336 is provided between each pair of rotating portions 2334. The side support member 233 and the back cover 28 are provided with two combined structures formed by two rotating components 25, two linkages 26 and two limiting mechanisms 27 respectively.

[0050] In some embodiments, the side support member 233 may also include three or more pairs of rotating portions 2334 and three or more limiting portions 2336. The three or more pairs of rotating portions 2334 are spaced apart and protrude from the back surface 2333 of the side support member 233. The three or more pairs of rotating portions 2334 are arranged along the length direction of the side support member 233, and a limiting portion 2336 is provided between each pair of rotating portions 2334. Three or more combined structures are provided between the side support member 233 and the back cover 28, each composed of three or more rotating components 25, three or more linkages 26, and three or more limiting mechanisms 27. For example... Figures 4-6 As shown, the side of the side support plate 2331 away from the positioning seat 251 is rotatably connected to the connector 256. Specifically, the side of the side support plate 233 away from the positioning seat 251 is connected to the connector 256 through the cooperation of a first arc groove and a first arc rail. In this embodiment, the rotating part 2334 is provided with a first arc groove 2335, and the connector 256 is provided with a first arc rail 2562 that can be slidably inserted into the first arc groove 2335. The axis of the first arc groove 2335 is collinear with the axis of rotation between the side support plate 233 and the connector 256. In this embodiment, the rotating part 2334 is an arc-shaped block, and the first arc groove 2335 is formed on the side of the rotating part 2334 facing the connector 256. One end of the first arc groove 2335 penetrates the surface of the rotating part 2334 away from the central support plate 231, and the other end of the first arc groove 2335 extends to the back surface 2333 of the side support plate 233. The first arc groove 2335 bends toward the side away from the back surface 2333. Specifically, the middle part of the first arc groove 2335 bends toward the side away from the back surface 2333.

[0051] In some embodiments, each pair of rotating parts 2334 has a first arcuate groove 2335 on its two opposite sides. The axes of the two first arcuate grooves 2335 are collinear. One end of the first arcuate groove 2335 penetrates the surface of the rotating part 2334 away from the central support member 231, and the first arcuate groove 2335 bends away from the back side 2333. The two opposite ends of the connector 256 are respectively provided with a first arcuate rail 2562 that is rotatably accommodated in the two first arcuate grooves 2335.

[0052] In some embodiments, one of the opposite sides of each pair of rotating parts 2334 is provided with a first arcuate groove 2335, and the other rotating part 2334 is provided with a first arcuate groove 2335 on one of its opposite sides. The axes of the two first arcuate grooves 2335 are collinear. The two opposite ends of the connector 256 are respectively provided with first arcuate rails 2562 that are rotatably accommodated in the two first arcuate grooves 2335.

[0053] In some embodiments, the connector 256 has a first arc groove at each of its opposite ends on the side away from the positioning seat 251, and the first arc groove is bent toward the side away from the side support plate 2331; the axis lines of the two first arc grooves are collinear; the side support 233 has a rotating part 2334 at each of its opposite ends on the connector 256, and the rotating part 2334 has a first arc rail rotatably accommodated in the first arc groove.

[0054] like Figure 5 and Figure 6 As shown, the side support plate 233 and the linkage 264 are connected by a limiting slide groove 2330 and a guide slide 2640. The limiting slide groove 2330 is provided in one of the side support plate 233 and the linkage 264, and the guide slide 2640 is provided in the other. In this embodiment, the limiting slide groove 2330 is provided in the limiting part 2336 of the side support plate 233, and the guide slide 2640 is provided in the linkage 264. The guide slide 2640 slides through the limiting slide groove 2330. Each limiting part 2336 is provided with a limiting slide groove 2330, which may or may not penetrate the opposite sides of the limiting part 2336 along the length direction parallel to the side support plate 2331. Specifically, the limiting part 2336 is a circular limiting block. In this embodiment, the limiting groove 2330 of each limiting part 2336 penetrates both opposite sides of the limiting part 2336. The limiting groove 2330 extends from one side of the side support plate 2331 to the opposite side. The limiting groove 2330 includes a first limiting segment 2330a and a second limiting segment 2330b located at opposite ends, and a guide segment 2330c located between the first limiting segment 2330a and the second limiting segment 2330b; the first limiting segment 2330a is located on the side away from the rotating part 2334, and the second limiting segment 2330b is located on the side closer to the rotating part 2334. The first limiting segment 2330a, the guide segment 2330c, and the second limiting segment 2330b are interconnected. When the two side supports 233 are fully folded, the guide slide 2640 is positioned at the first limiting section 2330a to prevent the side supports 231 from folding further; when the two side supports 233 are flattened, the guide slide 2640 is positioned at the second limiting section 2330b to prevent the side supports 231 from flattening further. In this embodiment, the limiting groove 2330 is an arc-shaped groove, and the limiting groove 2330 bends away from the back surface 2333; specifically, the guide slide section 2640L bends away from the back surface 2333. In this application, the side supports 233 and the linkage 264 are connected by the limiting groove 2330 and the guide slide 2640, which can reduce the overall width of the rotating shaft device 22, thereby reducing the internal space occupied by the rotating shaft device 22 in the housing 20, which is beneficial to the layout of other components such as the motherboard or battery.

[0055] In some embodiments, the limiting slide groove 2330 is provided on the linkage member 264, the guide slide 2640 is provided on the side support member 233, and the guide slide 2640 slides through the limiting slide groove 2330.

[0056] Please refer to the following: Figures 5-12 The rotating member 254 is rotatably connected to the positioning seat 251 at one end away from the connecting member 256, and the side support member 233 is rotatably connected to the connecting member 256 at the side away from the central support member 231. The linkage assembly 26 is connected to the positioning seat 251 and the two connecting members 256. The side support member 233 and the connecting member 256 are rotatably connected by the cooperation of the first arc groove 2335 and the first arc rail 2562. The first arc groove 2335 is provided in one of the side support member 233 and the connecting member 256, and the first arc rail 2562 is provided in the other of the side support member 233 and the connecting member 256. In this embodiment, the first arc rails 2562 at corresponding ends of the connecting member 256 are rotatably inserted into the two first arc grooves 2335 of the corresponding side support member 233, so that the connecting member 256 and the side support member 233 can rotate relative to each other along the first arc grooves 2335. The axis of the first arc track 2562 is collinear with the axis of the first arc groove 2335, and the axis of the first arc track 2562 is collinear with the axis of rotation between the side support 233 and the connecting member 256. The positioning seat 251 and the rotating member 254 are rotatably connected by the cooperation of the second arc groove 2511 and the second arc track 2541. The second arc groove 2511 is provided in one of the positioning seat 251 and the rotating member 254, and the second arc track 2541 is provided in the other of the positioning seat 251 and the rotating member 254. In this embodiment, the positioning seat 251 is provided with a second arc groove 2511, and the rotating member 254 is provided with a second arc rail 2541 corresponding to the second arc groove 2511, so that the connecting member 256 and the positioning seat 251 can rotate relative to each other along the second arc groove 2511. The axis of the second arc groove 2511 is collinear with the axis of the second arc rail 2541, and the axis of the second arc rail 2541 is collinear with the axis of rotation between the rotating member 254 and the positioning seat 251.

[0057] like Figure 11 and Figure 12As shown, the end of the rotating member 254 away from the connecting member 256 is rotatably connected to the first positioning seat 251a and the second positioning seat 251b. Specifically, the first positioning seat 251a and the second positioning seat 251b are respectively provided with a second arc groove 2511, and the second arc rail 2541 of the rotating member 254 is rotatably received in the second arc groove 2511. The first positioning seat 251a includes a front face 2512, a back face away from the front face 2512, two opposite side faces 2513, and two opposite end faces; the two opposite side faces of the first positioning seat 251a are respectively provided with a pair of second arc grooves 2511, and the opposite ends of each second arc groove 2511 pass through the front face 2512. The axis lines of the two second arc grooves 2511 on the same side of the first positioning seat 251a are parallel, and the two second arc grooves 2511 on the same end of the first positioning seat 251a are coaxial. The first positioning seat 251a has positioning grooves 2514 at opposite ends of its front side 2512. Two second arc grooves 2511 at the same end connect to the positioning grooves 2514. The first positioning seat 251a has a connecting hole 2515 through the bottom surface of the positioning groove 2514. A fastener, such as a screw, passes through the connecting hole 2515 and connects to the back cover 28, so that the positioning seat 251 is connected to the back cover 28. The side 2513 of the first positioning seat 251a facing the second positioning seat 251b has a snap-fit ​​hole 2516.

[0058] like Figure 11 and Figure 12 The second positioning seat 251b includes a front face 2512, a back face opposite to the front face 2512, two opposing side faces 2513, and two opposing end faces. A receiving space is provided on the side 2513 of the second positioning seat 251b facing the first positioning seat 251a, near the front face 2512. This receiving space is used to receive the rotating component 254. A pair of second arcuate grooves 2511 are formed on the side of the receiving space of the second positioning seat 251b. The axis lines of the pair of second arcuate grooves 2511 are parallel. After the first positioning seat 251a and the second positioning seat 251b are connected, the pair of second arcuate grooves 2511 of the second positioning seat 251b are respectively aligned with the pair of second arcuate grooves 2511 of the first positioning seat 251a. A connecting hole 2515 is provided on the bottom surface of the receiving space of the second positioning seat 251b. A locking fastener, such as a screw, passes through the connecting hole 2515 and is connected to the back cover 28, so that the positioning seat 251 is connected to the back cover 28. The second positioning seat 251b has a locking pin 2517 on its side 2513 facing the first positioning seat 251a. The second positioning seat 251b has locking holes 2518 at opposite ends and a pivot hole 2519 in the middle on its side 2513 away from the first positioning seat 251a. A cover plate extends from the front 2512 of the second positioning seat 251b toward the side away from the locking pin 2517.

[0059] The positioning seat 251 also includes a stop 252, which prevents the second arc track 2541 from disengaging from the corresponding second arc groove 2511. The stop 252 includes a positioning part 2521 and a stop part 2523 connected to one end of the positioning part 2521. The positioning part 2521 can accommodate and fix the positioning groove 2514 of the first positioning seat 251a. The stop part 2523 is a stop strip protruding from opposite ends of the positioning part 2521, used to prevent the second arc track 2541 from disengaging from the corresponding second arc groove 2511. The positioning part 2521 has through holes corresponding to the two connecting holes 2515 of the first positioning seat 251a, and locking fasteners pass through the through holes and are locked into the connecting holes 2515 of the first positioning seat 251a.

[0060] like Figure 11 and Figure 12 As shown, the rotating component 254 includes a first rotating part 2540, a second rotating part 2542, and a connecting part 2543 connecting the first rotating part 2540 and the second rotating part 2542. The first rotating part 2540 is rotatably connected to the positioning seat 251, and the second rotating part 2542 is rotatably connected to the corresponding connecting component 256. The first rotating part 2540 is provided with a second arc track 2541, and the second rotating part 2542 and the connecting component 256 are rotatably connected by a rotating shaft. The first rotating part 2540 includes rotating blocks that protrude from the connecting part 2543 on the side opposite to the second rotating part 2542 and are spaced apart from each other. The second arc track 2541 protrudes from the side of the rotating block. In this embodiment, the connecting portion 2543 has two spaced rotating blocks protruding from the side opposite to the second rotating portion 2542. One of the rotating blocks has second arc rails 2541 protruding from its opposite sides, and the other rotating block has a second arc rail 2541 protruding from its side facing the first rotating block. The axes of the three second arc rails 2541 are collinear. At least one second arc rail 2541 on each rotating block has a stop block 2544 protruding from its end away from the connecting portion 2543 along the axis of the second arc rail 2541. The second rotating portion 2542 has a shaft hole 2546 parallel to the axis of the second arc rail 2541, and a receiving opening perpendicular to the axis of the shaft hole 2546. In this embodiment, the second rotating portion 2542 is a rotating cylinder, with its axis parallel to the axis of the second arc rail 2541. The receiving opening is located on the outer peripheral wall of the rotating cylinder.

[0061] In some embodiments, the second arc groove 2511 on the positioning seat 251 and the second arc rail 2541 on the rotating member 254 can be interchanged; for example, an arc groove can be formed on the side of the first rotating part 2540, and an arc rail corresponding to the arc groove can be provided on the positioning seat 251. The arc rail is rotatably inserted into the arc groove, and the center line of the arc groove, the center line of the arc rail, and the rotation axis between the rotating member 254 and the positioning seat 251 are collinear.

[0062] The connector 256 is strip-shaped. Specifically, the connector 256 includes a rectangular connecting plate 2560, with first arc rails 2562 at opposite ends. One end of the front of the connecting plate 2560 has a receiving opening 2561 for receiving a second rotating part 2542. That is, the second rotating part 2542 is rotatably housed in the receiving opening 2561, allowing it to be rotatably connected to the connector 256. The connector 256 has shaft holes 2564 on opposite sides of the receiving opening 2561, parallel to the axis of the first arc rails 2562. These shaft holes 2564 are used to insert a rotating shaft 2565. In this embodiment, a connecting block is provided in the receiving opening 2561 of the connector 256. The connecting block should be placed in the receiving opening corresponding to the second rotating part 2542, and the shaft hole 2564 passes through the connecting block. The linkage 264 and the connecting member 256 are slidably connected through the cooperation of the guide groove and the guide rail. Specifically, the end of the connecting plate 2560 away from the receiving port 2561 is provided with a guide space 2566 along the axis of the first arc rail 2562 perpendicular to the axis of the first arc rail 2562. The guide space 2566 passes through the two opposite sides of the connecting plate 2560. The connecting plate 2560 is provided with a guide groove 2568 on the two opposite sides of the guide space 2566 along the axis of the first arc rail 2562 perpendicular to the axis of the first arc rail 2562. That is, the extension direction of the guide groove 2568 is perpendicular to the rotation axis between the linkage 264 and the positioning seat 251. The linkage 264 can slide along the guide groove 2568.

[0063] Please refer to the following: Figures 7-10 and Figures 13-14The linkage assembly 26 also includes a gear assembly 265 and two rotating shafts 266. The gear assembly 265 is disposed on the rotating shafts 266, and two linkage members 264 are respectively fixedly sleeved on the two rotating shafts 266. The two rotating shafts 266 are rotatably inserted into opposite ends of the third positioning seat 261. Each linkage member 264 and its corresponding rotating shaft 266 rotate together. The linkage member 264 rotates around the axis of the corresponding rotating shaft 266 to drive the rotating shaft 266 to rotate. The two linkage members 264 achieve synchronous folding or synchronous flattening through the gear assembly 265. The third positioning seat 261 includes a rectangular connecting plate 2610 and an extension plate 2611 connected to the connecting plate 2610. The extension plate 2611 extends from the center of the front of the connecting plate 2610 along a length direction perpendicular to the connecting plate 2610. The connecting plate 2610 has shaft holes 2613 at its opposite ends, which pass through the opposite sides of the connecting plate 2610 along the axis of rotation of the shaft 266. Between the two shaft holes 2613, the connecting plate 2610 has two spaced-apart rotating shaft holes 2615, whose axes are parallel to the axes of the shaft holes 2613. On the side of the connecting plate 2610 where the extension plate 2611 is located, an arc-shaped stop strip 2616 is provided around each shaft hole 2613.

[0064] The linkage 264 includes a sleeve 2642 and a connecting rod 2643 connected to the outer peripheral wall of the sleeve 2642. The sleeve 2642 has a connecting hole 2644 along its axial direction, and the rotating shaft 266 is inserted into the connecting hole 2644. In this embodiment, the connecting hole 2644 passes through the two opposite ends of the sleeve 2642, and the radial cross-section of the connecting hole 2644 is waist-shaped. In some embodiments, the radial cross-section of the connecting hole 2644 can be, but is not limited to, a rectangular surface, a polygonal surface, etc. A stop block 2645 protrudes from the end face of the sleeve 2642 facing the connecting plate 2610 around the connecting hole 2644, and the stop block 2645 is used to correspond to the corresponding arc-shaped stop strip 2616. The connecting rod 2643 is a rectangular plate, and the end of the connecting rod 2643 away from the sleeve 2642 has a guide opening 2646 in the direction perpendicular to the axial direction of the sleeve 2642; the connecting rod 2643 has a guide portion 2640 in the guide opening 2646. The linkage 264 and the connector 256 are slidably connected by the cooperation of a guide rail 2647 and a guide groove 2568. The guide rail 2647 is located at one end of the linkage 264 and the connector 256, and the guide groove 2568 is located at the other end of the linkage 264 and the connector 256. In this embodiment, the guide part 2640 is a connecting shaft inserted into the connecting rod 2643. The end of the linkage 264 away from the third positioning seat 261 slidably passes through the guide groove 2568 of the corresponding connector 256. Specifically, guide rails 2647 are respectively provided on opposite sides of the connecting rod 2643. The guide rails 2647 extend along the length direction parallel to the guide opening 2646 and can be slidably inserted into the guide groove 2568 of the connector 256.

[0065] In other embodiments, the linkage 264 is provided with a guide groove along an axial direction perpendicular to the sleeve 2642, and the connector 256 is provided with a guide rail that is slidably accommodated in the guide groove.

[0066] Each linkage 264 is provided with a pushing member 271. Specifically, the pushing member 271 is connected to one end of the sleeve 2642 away from the connecting plate 2610. The pushing member 271 includes a first cam 2710 disposed on the end face of the sleeve 2642 away from the connecting plate 2610. The first cam 2710 is sleeved on the rotating shaft 266, and the axis of the first cam 2710 is coaxial with the sleeve 2642. The first cam 2710 includes a concave and convex surface disposed at one end of the sleeve. The concave and convex surface includes a first protrusion 2712 and a first recess 2714, which are arranged sequentially at intervals along the circumference of the sleeve 2642. The number of first protrusions 2712 and the number of first recesses 2714 can be set as needed. For example, the first cam 2710 may include one first protrusion 2712 and one first recess 2714, two first protrusions 2712 and two first recesses 2714, three first protrusions 2712 and three first recesses 2714, or four first protrusions 2712 and four first recesses 2714, etc. In this embodiment, the first cam 2710 includes three first protrusions 2712 and three first recesses 2714 arranged circumferentially along the sleeve 2642.

[0067] The gear assembly 265 includes two first gears 2651 fixedly sleeved at the same end of two rotating shafts 266 and two meshing second gears 2652. The two second gears 2652 mesh with the two first gears 2651 respectively, and the rotating shafts 2654 of the second gears 2652 extend from their opposite end faces. In this embodiment, the two second gears 2652 are located between the two first gears 2651, and the outer diameter and number of teeth of the second gears 2652 are the same as those of the first gears 2651. The centerlines of the two first gears 2651 are parallel to the centerlines of the two second gears 2652. Preferably, the centerlines of the two first gears 2651 and the centerlines of the two second gears 2652 are coplanar.

[0068] In other embodiments, the outer diameter of the second gear 2652 is smaller than the outer diameter of the first gear 2651, and the number of teeth of the second gear 2652 around a circle is less than the number of teeth of the first gear 2651 around a circle. This reduces the overall width of the linkage assembly 26, thereby reducing the overall width of the rotating shaft device 22, reducing the internal space occupied by the housing 20, and facilitating the layout of other components such as the motherboard or battery.

[0069] like Figure 13 and Figure 14As shown, the rotating shaft 266 includes a shaft body 2660 and a positioning cover 2661 located at the end of the shaft body 2660. A first gear 2651 is fixedly connected to the end of the shaft body 2660 where the positioning cover 2661 is located. The axis of the first gear 2651 is collinear with the axis of the shaft body 2660. A connecting rod 2664 is provided between the positioning cover 2661 and the first gear 2651. A positioning part 2665 is provided on the outer peripheral surface of the shaft body 2660 near the first gear 2651, and a positioning surface 2666 is provided on the outer peripheral surface of the end of the shaft body 2660 away from the positioning cover 2661. The positioning part 2665 is used to position the sleeve 2642 of the linkage 264. A groove 2667 is provided on the outer peripheral surface of the end of the shaft body 2660 away from the positioning cover 2661. The groove 2667 is located on the outer peripheral wall of the shaft body 2660 and surrounds the circumference of the shaft body 2660. In this embodiment, the radial cross-section of the end of the shaft 2660 away from the positioning cover 2661 is an oblong surface, and the positioning surface 2666 is a straight surface of the end of the shaft 2660 away from the first gear 2651. In some embodiments, the radial cross-section of the end of the shaft 2660 away from the first gear 2651 may be, but is not limited to, a rectangular surface or a polygonal surface. The end of the shaft 2660 away from the positioning buckle 2662 is provided with a slot 2667. The rotating shaft 266 also includes a positioning buckle 2662, which is detachably snapped onto the end of the shaft 2660 near the positioning cover 2661. The two opposite ends of the positioning buckle 2662 are respectively provided with U-shaped buckles, and the middle part of the positioning buckle 2662 is provided with a connecting groove 2668.

[0070] The limiting mechanism 27 includes a supporting member 273 and an elastic member 274 sleeved on the rotating shaft 266. The elastic member 274 provides elastic force for the supporting member 273 and the pushing member 271 to abut against each other. The rotating assembly 25 rotates relative to the positioning seat 251 through the linkage mechanism 27, and the pushing member 271 rotates relative to the supporting member 273. The elastic member 274 is squeezed by the supporting member 273 and undergoes elastic deformation. The frictional resistance between the pushing member 271 and the supporting member 273 positions the linkage member 264 relative to the third positioning seat 261, so as to realize that the side support member 233 is positioned relative to the middle support member 231 at a specific angle. The range of the specific angle is the included angle between the two side support members 233, which is between 60 degrees and 150 degrees. Specifically, when the two side supports 233 of the rotating shaft device 22 are synchronously unfolded or folded to an angle equal to or greater than 60 degrees and less than or equal to 150 degrees via the rotating assembly 25 and the linkage assembly 26, the friction between the pushing member 271 and the holding member 273 helps to position the two side supports 233, that is, the two side supports 233 do not rotate relative to each other without external force. It should be noted that the "sleeving" mentioned in this application refers to one element being inserted into another element, such as having a through hole, shaft hole, groove, etc., on the other element, and part or all of the one element being inserted into the through hole, shaft hole, or groove; for example, the linkage member 264 sleeved on the rotating shaft 266 means that the linkage member 264 has a shaft hole, and the rotating shaft 266 is inserted into the shaft hole; similarly, the holding member 273 sleeved on the rotating shaft 266 means that the holding member 273 has a shaft hole, and the rotating shaft 261 is inserted into the shaft hole.

[0071] Specifically, the abutment 273 includes a second cam 2730, and an elastic member 274 elastically pushes against the abutment 273 so that the second cam 2730 and the first cam 2710 can rotatably abut against each other. When the first cam 2710 rotates relative to the second cam 2730, the first cam 2710 rotatably pushes the second cam 2730 to slide away from or towards the third positioning seat 261, the elastic member 274 is compressed, and the frictional resistance between the first cam 2710 and the second cam 2730 can limit the pusher 271 relative to the abutment 273 to a specific angle. In this embodiment, the abutment 273 includes a connecting portion 2732 and two second cams 2730 disposed at opposite ends of the connecting portion 2732, that is, the two second cams 2730 are located at opposite ends of the connecting portion 2732, and the two second cams 2730 are slidably sleeved on the two rotating shafts 266 respectively. The second cam 2730 includes a circular sleeve 2733 and a concave-convex surface at one end of the sleeve 2733. The concave-convex surface includes a second protrusion 2734 and a second recess 2735, which are arranged sequentially at intervals along the circumference of the sleeve 2733. The number of second protrusions 2734 and second recesses 2735 on the second cam 2730 is the same as the number of first recesses 2714 and first protrusions 2714 on the first cam 2710, such that the first protrusions 2714 engage with the second recesses 2735, and the second protrusions 2734 engage with the first recesses 2714. In this embodiment, the elastic element 274 is a spring.

[0072] The limiting mechanism 27 also includes a positioning element 275 sleeved on the rotating shaft 266, a friction element 276 fixedly sleeved on the rotating shaft 266, and two snap fasteners 278, which respectively engage with the slots 2667 of the two rotating shafts 266. The positioning element 275 is located at the end of the elastic element 274 away from the supporting element 273. The friction element 276 is clamped between the positioning element 275 and the snap fasteners 278. The end of the elastic element 274 away from the supporting element 273 elastically abuts against the friction element 276, so that the friction element 276 abuts against the positioning element 275. The rotation of the rotating shaft 266 causes the friction element 276 to rotate relative to the positioning element 275. The frictional resistance between the friction element 276 and the positioning element 275 can limit the two side supports 233 to a specific angle between 60 degrees and 150 degrees. Specifically, the positioning component 275 includes a positioning plate 2751 and a connecting plate 2753 connected to the middle of one side of the positioning plate 2751. The positioning plate 2751 has through holes 2752 at its opposite ends, and the opposite end faces of the positioning plate 2751 form arc surfaces. The connecting plate 2753 extends from the middle of one side of the positioning plate 2751 in a direction perpendicular to the positioning plate 2751, and has a connecting hole 2754 at its end. Preferably, the opposite sides of the positioning plate 2751 have friction structures around each through hole 2752. These friction structures can be, but are not limited to, friction holes, friction protrusions, or friction patterns. The friction component 276 includes a friction plate 2760, and the opposite sides of the friction plate 2760 have friction structures 2762. These friction structures 2762 can be, but are not limited to, friction holes, friction protrusions, or friction patterns. In this embodiment, there are two friction plates 2760, each of which is a circular plate. A positioning hole 2764, which is oblong, is provided in the center of the circular plate along its axial direction. In other embodiments, the friction plate 2760 may be, but is not limited to, a rectangular plate, a polygonal plate, or an elliptical plate, and the positioning hole 2764 may be, but is not limited to, a rectangular hole or a polygonal hole.

[0073] like Figure 5 and Figure 6As shown, the back cover 28 is a strip frame with a receiving groove 280. Positioning seats 251, third positioning seats 261, and positioning elements 275 are housed in the receiving groove 280 and are fixedly connected to the back cover 28. Specifically, the back cover 28 has a plurality of first support pillars 281 and a plurality of second support pillars 283 on its bottom surface within the receiving groove 280. The first support pillars 281 are spaced apart along the length of the back cover 28, and the second support pillars 283 are spaced apart along the length of the back cover 28. Each first support pillar 281 has a locking hole 2810 along its axial direction, and each second support pillar 283 has a locking hole 2830 along its axial direction. The first support pillars 281 are used to connect the positioning seats 251 and the third positioning seats 261, and the second support pillars 283 are used to connect the positioning elements 275. In other embodiments, the positioning base 251, the third positioning base 261 and the positioning member 275 can also be connected to the back cover 28 by means of, but not limited to, screwing, snap-fitting or gluing.

[0074] Please refer to the following: Figures 3-17When assembling the rotating shaft device, the gear assembly 265 is assembled onto one end of the two rotating shafts 266 with positioning covers 2661. Specifically, the two first gears 2651 are respectively fixedly sleeved onto the ends of the two rotating shafts 266 with positioning covers 2661, and then the two second gears 2652 are placed between the two first gears 2651 after meshing with each other, so that the two second gears 2652 mesh with the two first gears 2651 respectively; the U-shaped buckles at opposite ends of the positioning buckle 2662 are respectively snapped onto the connecting rods 2664 of the two rotating shafts 266, and the ends of the rotating shafts 2654 of the two second gears 2652 are inserted into the connecting grooves 2668 of the positioning buckle 2662; the ends of the two rotating shafts 266 opposite to the gear assembly 265 are respectively inserted into the two ends of the third positioning seat 261. In the shaft hole 2613, until the rotating shafts of the two second gears 2652 are respectively inserted into the two shaft holes 2615 of the third positioning seat 261; the sleeves 2642 of the two linkage members 264 are respectively sleeved on the two shafts 2660, until the two sleeves 2642 are respectively positioned in the positioning parts 2665 of the two rotating shafts 266. At this time, the stops 2645 of the two linkage members 264 correspond to the two arc-shaped stop bars 2616 of the third positioning seat 261; the abutment member 273 is sleeved on the two rotating shafts 266, until the two second cams 2730 of the abutment member 273 are respectively engaged with the first cams 2710 of the two linkage members 264; at this time, the first protrusion 2714 is accommodated in the second recess 2735, and the second protrusion 2734 is accommodated in the first recess 2714. Two elastic elements 274 are respectively sleeved on the ends of the two rotating shafts 266 away from the positioning cover 2661; a positioning element 275 is sleeved on the ends of the two rotating shafts 266 away from the positioning cover 2661, that is, the ends of the two rotating shafts 266 away from the positioning cover 2661 are respectively inserted into the two through holes 2752 of the positioning element 275; two friction elements 276 are respectively sleeved on the ends of the two rotating shafts 266 away from the positioning cover 2661; and two snap fasteners 278 are respectively snapped into the slots 2667 of the two rotating shafts 266. At this time, the abutment 273, elastic element 274, positioning element 275, and friction element 276 are respectively sleeved on the rotating shaft 266, that is, the abutment 273, elastic element 274, positioning element 275, and friction element 276 can all move along the axial direction of the rotating shaft 266; the elastic element 274 is located between the positioning element 275 and the abutment 273, and the two friction elements 276 are positioned on the positioning surface 2666 of the rotating shaft 266 and are clamped between the positioning element 275 and the snap fastener 278; the friction element 276 can rotate with the corresponding rotating shaft 266, while the abutment 273 and the positioning element 275 cannot rotate with the rotating shaft 266; the end of the elastic element 274 away from the abutment 273 elastically abuts against the positioning element 275, and the elastic element 274 is in a compressed state, that is, the elastic element 274 has pre-elastic force.If one of the elastic elements 274 has a pre-spring force F0, each first cam 2710 can rotate and abut against the corresponding second cam 2730. The axial force F on the first cam 2710 and the second cam 2720 on each rotating shaft 266 is equal to the pre-spring force F0, that is, F = F0. The axial force F between the friction element 276 and the positioning element 275 on each rotating shaft 266 is equal to the pre-spring force F0, that is, F = F0.

[0075] The first rotating parts 2540 of the two rotating members 254 are rotatably connected to the positioning seats 251. Specifically, the first rotating parts 2540 of the two rotating members 254 are placed at opposite ends of the first positioning seat 251a, so that opposite ends of the first positioning seat 251a are respectively accommodated between the two rotating blocks of the two rotating members 254, and the second arc rail 2541 is rotatably inserted into the corresponding second arc groove 2511. The first positioning seat 251a and the second positioning seat 251b are brought closer together so that the second arc rail 2541 of the rotating member 254 is accommodated in the corresponding second arc groove 2511 of the second positioning seat 251b. The locking pin 2517 is inserted into the locking hole 2516; the stop The stop 252 is placed in the positioning groove 2514 of the first positioning seat 251a. Two locking fasteners are respectively passed through the stop 252 and connected to the two connecting holes 2515, so that the stop 252 is fixed to the first positioning seat 251a. The two stop portions 2523 extend to the ends of the second arc groove 2511 to prevent the second arc rail 2541 of the rotating part 254 from disengaging from the second arc groove 2511. The assembled linkage component 26 and the limiting mechanism 27 are placed on the end of the second positioning seat 251b away from the first positioning seat 251a. The connecting rods 2664 of the two rotating shafts 266 are respectively inserted into the two snap-fit ​​holes 2518 of the second positioning seat 251b. The two second gears 265 The rotating shafts 2654 of the second positioning seat 251b are respectively inserted into the two rotating shaft holes 2519 of the second positioning seat 251b, so that the third positioning seat 261 is detachably connected to the positioning seat 251; the two connecting parts 256 are placed on opposite sides of the assembled linkage assembly 26 and the limiting mechanism 27, so that the connecting rods 2643 of the two linkage parts 264 are respectively inserted into the guide sliding spaces 2566 of the two connecting parts 256. Specifically, the two guide rails 2647 of each connecting rod 2643 are respectively slidably inserted into the corresponding guide sliding grooves 2568; the second rotating parts 2542 of the two rotating parts 254 are respectively housed in the receiving openings 2561 of the two connecting parts 256, and then the two rotating shafts 2565 are respectively inserted into The corresponding shaft holes 2564 and 2546 are used to rotatably connect the ends of the two rotating parts 254 away from the positioning seat 251 to the two connecting parts 256 respectively; then the two side support parts 233 are placed on opposite sides of the positioning seat 251, and the two first arc rails 2562 of each connecting part 256 are respectively inserted into the two first arc grooves 2335 of the corresponding side support part 233. At the same time, the limiting parts 2336 of the two side support parts 233 are respectively inserted into the guide openings 2646 of the two linkage parts 264, and the two guide parts 2640 are slidably accommodated in the limiting grooves 2330 of the two limiting parts 2336 respectively, and the guide parts 2640 are connected to the corresponding linkage parts 264.The rotating assembly 25, the linkage assembly 26, and the limiting mechanism 27 are placed in the receiving groove 280 of the back cover 28. The middle support 231 is placed on the limiting mechanism 27. The locking fastener is passed through the connecting hole 2515 of the positioning seat 251 and connected to the locking hole 2810 of the first support column 281. The locking fastener is passed through the countersunk hole 2313 of the middle support 231 and the connecting hole 2754 of the positioning member 275 and then connected to the locking hole 2830 of the second support column 283.

[0076] At this time, the rotation axis between the linkage 264 and the positioning seat 251 is parallel to the rotation axis between the rotating component 254 and the positioning seat 251, and the rotation axis between the linkage 264 and the positioning seat 251 is parallel to the rotation axis between the rotating component 254 and the connecting component 256. That is, the rotation axis between the linkage 264 and the third positioning seat 261 is parallel to the rotation axis between the rotating component 254 and the positioning seat 251, and the rotation axis between the linkage 264 and the third positioning seat 261 is parallel to the rotation axis between the rotating component 254 and the connecting component 256; the rotation axis between the rotating component 254 and the positioning seat 251 is parallel to the axis of rotation of the rotating shaft 266. When the side support 233 and the middle support 231 are flattened, the side support 233 and the middle support 231 are arranged side by side, the first arc track 2562 is rotatably accommodated in the corresponding first arc groove 2335, the second arc track 2541 is rotatably accommodated in the corresponding second arc groove 2511, and the guide slide 2640 is located in the second limiting section 2330b of the limiting slide groove 2330.

[0077] When the connector 256 drives the rotating member 254 to rotate relative to the positioning seat 251, the linkage member 264 rotates relative to the third positioning seat 261, the linkage member 264 slides relative to the connector 256, and the rotating mechanism 253 drives the side support member 233 to rotate and slide relative to the positioning seat 251, so that the side support members 233 bend or unfold synchronously relative to each other. Specifically, the rotating member 254 rotates relative to the positioning seat 251 via the second arc track 2541 and the second arc groove 2511; the linkage member 264 rotates together with the rotating mechanism 253, driving the corresponding rotating shaft 266 to rotate, so that the first gear 2651 on the rotating shaft 266 rotates, thereby driving the corresponding second gear 2652 to rotate, thus realizing the synchronous rotation of the two linkage members 264 of the linkage assembly 26. The guide rail 2647 of each linkage member 264 slides along the corresponding guide groove 2568, and each guide part 2640 slides and rotates in the corresponding limiting groove 2330; the first arc track 2562 of the connecting member 256 is rotatably connected to the corresponding first arc groove 2335, and the second arc track 2541 of the rotating member 254 is rotatably connected to the corresponding second arc groove 2511, so as to realize the mutual bending or mutual unfolding of the two side support members 233 and the middle support member 231.

[0078] When the rotating shaft device 22 is bent from its flattened state, one of the connecting members 256 is bent relative to the positioning seat 251 toward the other connecting member 256. The connecting member 256 drives the second arc track 2541 of the rotating member 254 to rotate in the second arc groove 2511 of the positioning seat 251. The connecting member 256 drives the linkage member 264 and the corresponding rotating shaft 266 to rotate together relative to the third positioning seat 261. The guide rail 2647 of the linkage member 264 slides in the guide groove 2568, and the guide part 2640 of the linkage member 264 slides from the second limiting section 2330b of the limiting groove 2330 to the first limiting section 2330a, so as to drive the corresponding linkage member 264 and the rotating shaft 266 to rotate relative to the third positioning seat 261 along the axis of the rotating shaft 266. The rotation of the linkage 264 drives the first gear 2651 on the corresponding rotating shaft 266 to rotate. Through the gear combination 265, the two corresponding first gears 2651 rotate synchronously. The synchronously rotating first gears 2651 drive the two corresponding linkages 264 to move closer to each other synchronously. At the same time, the connector 256 drives the first arc track 2562 to rotate and connect to the corresponding first arc groove 2335, and the rotating member 254 drives the second arc track 2541 to rotate and connect to the corresponding second arc groove 2511. Meanwhile, the linkages 264 on both sides of the third positioning seat 261 rotate synchronously relative to the third positioning seat 261 and move closer to each other, so as to drive the two side support members 233 to move closer to each other synchronously, until the two side support members 233 and the middle support member 231 form a teardrop shape in cross section.

[0079] During the above process, as the side support 233 bends relative to the middle support 231, the guide slide 2640 slides from the second limiting section 2330b of the limiting slide groove 2330 to the first limiting section 2330a of the limiting slide groove 2330. The linkage 264 slides relative to the connecting member 256, causing the end face 2601 of the linkage 264 away from the corresponding connecting member 256 and away from the side of the positioning seat 251; the axial force between the first cam 2710 and the corresponding second cam 2730 on each rotating shaft 266 is equal to the elastic force of the elastic member 274, and the axial force between the friction member 276 and the positioning member 275 on each rotating shaft 266 is equal to the elastic force of the elastic member 274; the frictional resistance between the first cam 2710 and the second cam 2730 and the frictional resistance between the friction member 276 and the positioning member 275 can limit the two side supports 233 to a specific angle between 60 degrees and 150 degrees.

[0080] In other usage methods, the two connectors 256 can be rotated together in opposite directions. Each connector 256 rotates relative to the second arc track 2541 of the corresponding rotating member 254 and the second arc groove 2511 of the positioning seat 251, thereby driving the linkage member 264 and the corresponding rotating shaft 266 to rotate relative to the third positioning seat 261. At the same time, the two connectors 256 synchronously drive the first arc track 2562 to rotate in the first arc groove 2335 corresponding to the side support member 233, and the guide rail 2647 of the linkage member 264 slides in the guide groove 2568. The rotation of the linkage member 264 drives the corresponding first arc track 2562 to rotate in the first arc groove 2335 of the side support member 233. When gear 2651 rotates, it drives the two corresponding first gears 2651 to rotate synchronously through gear assembly 265. The synchronously rotating first gears 2651 drive the two linkages 264 to move closer to each other synchronously. The guide slide 2640 on the linkage 264 slides from the second limiting section 2330b of the limiting slide groove 2330 to the first limiting section 2330a. At the same time, the linkages 264 on both sides of the third positioning seat 261 move closer to each other relative to the synchronous rotation of the third positioning seat 261, so as to drive the two side support members 233 to move closer to each other synchronously until the two side support members 233 and the middle support member 231 form a teardrop shape in cross section.

[0081] When the rotating shaft device 22 is unfolded from its fully bent state, one of the connecting members 256 is unfolded away from the other connecting member 256 relative to the positioning seat 251. The connecting member 256 drives the second arc track 2541 of the rotating member 254 to rotate within the second arc groove 2511 of the positioning seat 251. The connecting member 256 drives the linkage member 264 and the corresponding rotating shaft 266 to rotate together relative to the third positioning seat 261. The guide rail 2647 of the linkage member 264 slides in the guide groove 2568, and the guide part 2640 of the linkage member 264 slides from the first limiting section 2330a of the limiting groove 2330 to the second limiting section 2330b. Simultaneously, the connector 256 drives the first arc track 2562 to rotate and connect to the corresponding first arc groove 2335. The rotation of the linkage 264 drives the corresponding first gear 2651 to rotate through the rotating shaft 266. The gear combination 265 drives the two corresponding first gears 2651 to rotate synchronously. The synchronously rotating first gears 2651 drive the two corresponding linkages 264 to move away from each other synchronously. At the same time, the two rotating mechanisms 253 rotate synchronously relative to the positioning seat 251 and move away from each other, so as to drive the two side support members 233 to unfold synchronously until the two side support members 233 and the middle support member 231 are flattened.

[0082] During the above process, as the side support 233 flattens relative to the central support 231, the guide slide 2640 slides from the first limiting section 2330a of the limiting slide groove 2330 to the second limiting section 2330b of the limiting slide groove 2330. The linkage 264 slides relative to the connecting member 256 so that the end face 2601 of the linkage 264 away from the third positioning seat 261 approaches the corresponding connecting member 256 away from the side of the positioning seat 251; the axial force between the first cam 2710 and the corresponding second cam 2730 on each rotating shaft 266 is equal to the elastic force of the elastic member 274, and the axial force between the friction member 276 and the positioning member 275 on each rotating shaft 266 is equal to the elastic force of the elastic member 274; the frictional resistance between the first cam 2710 and the second cam 2730 and the frictional resistance between the friction member 276 and the positioning member 275 can limit the two side supports 233 to a specific angle between 70 degrees and 130 degrees.

[0083] In other usage methods, the two connectors 256 can be rotated together in a direction away from each other. Each connector 256 drives the second arc track 2541 of the rotating member 254 to rotate relative to each other along the second arc groove 2511 of the positioning seat 251. The connector 256 drives the linkage member 264 and the corresponding rotating shaft 266 to rotate together relative to the third positioning seat 261. The guide rail 2647 of the linkage member 264 slides in the guide groove 2568, and the guide part 2640 of the linkage member 264 slides from the first limiting section 2330a of the limiting groove 2330 to the second limiting section 2330b. At the same time, the connection... The component 256 drives the first arc track 2562 to rotate in the corresponding first arc groove 2335. The rotation of the linkage component 264 drives the corresponding first gear 2651 to rotate through the rotating shaft 266. The gear combination 265 drives the two corresponding first gears 2651 to rotate synchronously. The synchronously rotating first gears 2651 drive the corresponding linkage component 264 to move away from each other synchronously. At the same time, the two rotating mechanisms 253 rotate synchronously relative to the positioning seat 251 and move away from each other, so as to drive the two side support components 233 to move away from each other synchronously until the two side support components 233 are flush with the middle support component 231.

[0084] Please refer to the following: Figures 1-3 The installed rotating shaft device 22 is placed between the two frames 21. The connecting pieces 256 on opposite sides of the back cover 28 are respectively housed in the receiving grooves 216 of the two frames 21, and the two connecting pieces 256 are respectively fixedly connected to the connecting holes 2161 of the two frames 21. The distance sensor 29 is fixedly connected to the positioning port 2163 of the frame 21, so that the distance sensor 29 faces the end face 2601 of one of the linkages 264 away from the end face 2601 of the third positioning seat 261, that is, the distance sensor 29 faces the connecting rod 2643 of one of the linkages 264 away from the end face 2601 of the third positioning seat 261. At this time, as Figure 15 As shown, the relative distance L0 between the connecting rod 2643 of one of the linkage components 264 and the end face 2601 of the third positioning seat 261 and the distance sensor 29 is the distance sensor 29. The distance sensor 29 obtains the relative distance L0 between the linkage component 264 and the distance sensor 29, as well as the movement information data of the linkage component 264 relative to the distance sensor 29. The distance sensor 29 transmits the movement information data to the processor on the motherboard 40. The processor receives the movement information data and calculates the rotation angle of the frame 21. In this embodiment, the distance sensor 29 obtains a relative distance L0 of 1.35 between the linkage component 264 and the distance sensor 29, and the distance sensor 29 obtains a movement amount of 0mm relative to the distance sensor 29. The front faces 211 of the two frames 21, the front faces of the two side supports 233, and the front face of the middle support 231 are coplanar. The back face of the flexible component 30 is connected to the front faces 211 of the two frames 21 and the front face of the rotating shaft device 22. Specifically, the bendable area 31 is attached to the front of the rotating shaft device 22, and the two non-bendable areas 33 are respectively attached to the front of the two frames 21. When the flexible component 30 is in a flattened state, the central support 231 is flush with the two side support components 233, and the rotating shaft device 22 remains flattened. The relative distance L0 between the connecting rod 2643 of one of the linkage components 264 and the end face 2601 of the third positioning seat 261 and the distance sensor 29 is minimized. The guide slide 2640 stops at the first limiting section 2330a of the limiting slide groove 2330 to prevent the rotating shaft device 22 from further unfolding and potentially damaging the flexible component 30.

[0085] Please refer to the following: Figures 1-3 and Figures 15-21When bending the electronic device 100, a bending force is applied to at least one of the two frames 21 of the electronic device 100, causing the rotating mechanism 253 connected to the two frames 21 to rotate in a direction closer to each other. The bending of the rotating shaft device 22 is achieved through the linkage component 26, and the bendable area 31 of the flexible member 30 bends along with the support component 23. Specifically, if a bending force is applied to one of the frames 21, the frame 21 drives the corresponding rotating member 254 to rotate relative to the positioning seat 251 towards the side closer to the flexible member 30. The second arc track 2541 of the rotating member 254 rotates relative to the second arc groove 2511 of the positioning seat 251. The connecting member 256 drives the linkage member 264 and the corresponding rotating shaft 266 to rotate together relative to the third positioning seat 261, and the guide rail 2647 of the linkage member 264 slides in the guide groove 2568, causing the end face 2601 to move away from the connecting member. The side of the connector 256 away from the third positioning seat 261 and the guide slide 2640 of the linkage 264 slide from the second limiting segment 2330b of the limiting slide groove 2330 to the first limiting segment 2330a, so as to drive the corresponding linkage 264 and the rotating shaft 266 to rotate together. The rotation of the linkage 264 drives the corresponding first gear 2651 to rotate. Through the gear combination 265, the corresponding two first gears 2651 are driven to rotate synchronously. The synchronously rotating first gears 2651 drive the corresponding two linkages 264 to move closer to each other synchronously. Simultaneously, the connector 256 drives the first arc rail 2562 to rotate and connect to the corresponding first arc groove 2335, and the rotating component 254 drives the second arc rail 2541 to rotate and connect to the corresponding second arc groove 2511; the two rotating mechanisms 253 rotate synchronously relative to the positioning seat 251 and move closer to each other, so as to drive the two side support members 233 to move closer to each other synchronously, so that the rotating shaft device 22 is in a bent state; the bendable area 31 of the flexible member 30 bends with the rotating shaft device 22 until the front sides of the two non-bendable areas 33 of the flexible member 30 are in contact with each other, and the bendable area 31 is bent into a teardrop shape, thereby realizing the seamless folding of the electronic device 100.

[0086] During the folding process described above, the linkage 264 folds relative to the positioning seat 261, and the relative distance between the distance sensor 29 and the linkage 264 gradually increases. Specifically, the relative distance between the end face 2601 of one of the linkages 264 and the distance sensor 29 gradually increases. The distance sensor 29 obtains the sliding movement information data of the linkage 264 relative to the distance sensor 29 and transmits it to the motherboard 40. The processor of the motherboard 40 receives the movement information data and calculates the rotation angle of the frame 21. Figure 15When the two frames 21 are in a flattened state, that is, when the included angle between the two frames 21 is 0 degrees, the relative distance L0 between the end face 2601 of the third positioning seat 261 and the distance sensor 29, and the movement of the linkage 264 relative to the connector 256 is 0 mm; after the distance sensor 29 obtains the relative distance L0 between the linkage 264 and the distance sensor 29 and the movement information data of the linkage 264 relative to the distance sensor 29, the distance sensor 29 transmits the movement information data to the processor on the motherboard 40. The processor receives the movement information data and calculates the rotation angle of the frame 21 as 0 degrees. In this embodiment, the relative distance L0 is equal to 1.35mm, and the sliding movement of the linkage 264 relative to the distance sensor 29 is 0mm. The distance sensor 29 obtains that the relative distance L0 between the linkage 264 and the distance sensor 29 is 1.35mm, and the sliding movement of the linkage 264 relative to the distance sensor 29 is 0mm. The distance sensor 29 transmits the above-mentioned movement information data to the processor on the motherboard 40. The processor receives the movement information data and calculates the rotation angle of the frame 21 as 0 degrees. Figure 19 The two frames 21 shown are folded together until the angle between them is 90 degrees. The relative distance L1 between the end face 2601 of the third positioning seat 261 and the distance sensor 29 is L0 + L2. Δ1 L1>L0, the L Δ1 The sliding amount of the linkage 264 relative to the connecting member 256; the distance sensor 29 obtains the relative distance L1 between the linkage 264 and the distance sensor 29, as well as the movement information data of the linkage 264 relative to the distance sensor 29, and transmits the movement information data to the processor on the motherboard 40. The processor receives the movement information data and calculates the rotation angle of the frame 21; in this embodiment, the relative distance L1 is equal to 3.603mm, the relative distance L0 is equal to 1.35mm, and L... Δ1 The distance sensor 29 obtains a relative distance L1 between the linkage 264 and the distance sensor 29 of 3.603 mm, and the distance sensor 29 obtains the amount of sliding movement L of the linkage 264 relative to the distance sensor 29. Δ1 After the distance is 2.253mm, the distance sensor 29 transmits the aforementioned movement information data to the processor on the motherboard 40. The processor receives the movement information data and calculates the rotation angle of the frame 21 as 90 degrees. Figure 21 When the two frames 21 are folded together to an angle of 180 degrees, the relative distance L2 between the end face 2601 of the third positioning seat 261 and the distance sensor 29 is L0 + L2. Δ2 L2>L1>L0, the L Δ2This refers to the sliding amount of the linkage 264 relative to the connecting member 256; the distance sensor 29 obtains the relative distance L2 between the linkage 264 and the distance sensor 29, as well as the movement information data of the linkage 264 relative to the distance sensor 29; in this embodiment, the relative distance L2 is equal to 5.069mm, the relative distance L0 is equal to 1.35mm, and L... Δ2 The distance is equal to 3.719mm; the distance sensor 29 obtains a relative distance L2 between the linkage 264 and the distance sensor 29 of 5.069mm, and the distance sensor 29 obtains the amount of sliding movement L of the linkage 264 relative to the distance sensor 29. Δ2 After the distance is 3.719mm, the distance sensor 29 transmits the movement information data to the processor of the motherboard 40. The processor receives the movement information data and calculates that the rotation angle of the frame 21 is 180 degrees.

[0087] During the folding process described above, the frictional torque between the first cam 2710 and the second cam 2730 on each rotating shaft 266, and the frictional torque between the friction member 276 and the positioning member 275, resist the rebound force of the flexible member 30, so that the two side support members 233 are positioned relative to each other at a specific angle, and the two frames 21 are limited to a specific angle between 70 degrees and 130 degrees. The bendable area 31 of the flexible member 30 is bent into a teardrop shape, reducing the duty cycle of the bendable area 31 after bending, thereby reducing the overall thickness of the electronic device 100. When the rotating shaft device 22 is in a fully bent state, the guide slide 2640 stops at the second limiting section 2330b of the limiting slide groove 2330, preventing the rotating shaft device 22 from further bending and potentially damaging the flexible member 30.

[0088] In other bending methods of the electronic device 100, bending forces can be applied to both frames 21 at the same time. The two frames 21 drive the two rotating mechanisms 253 to rotate towards the side closer to the flexible member 30, and the bending of the electronic device 100 is achieved through the rotating shaft device 22.

[0089] When the electronic device 100 needs to be flattened, one of the frames 21 is pulled outward, causing the two rotating mechanisms 253 connected to the two frames 21 to rotate in a direction away from each other. Specifically, an outward pulling force is applied to one of the frames 21 of the electronic device 100, causing the corresponding rotating member 254 to rotate relative to the positioning seat 251 away from the flexible member 30. The second arc track 2541 of the rotating member 254 rotates relative to the second arc groove 2511 of the positioning seat 251. The connecting member 256 causes the linkage member 264 and the corresponding rotating shaft 266 to rotate together relative to the third positioning seat 261. The guide rail 2647 of the linkage member 264 slides in the guide groove 2568 so that the end face 2601 of the linkage member 264 approaches the side of the positioning seat 251 behind the corresponding connecting member 256, and the guide part 2640 of the linkage member 264 moves from the first limiting section 2330a of the limiting groove 2330 to the second limiting section 233. 0b slides to drive the corresponding linkage 264 and the corresponding rotating shaft 266 to rotate together; at the same time, the connecting member 256 drives the first arc track 2562 to rotate and connect to the corresponding first arc groove 2335. The rotation of the linkage 264 drives the corresponding first gear 2651 to rotate. Through the gear combination 265, the corresponding two first gears 2651 are driven to rotate synchronously. The synchronously rotating first gears 2651 drive the corresponding two linkages 264 to move away from each other synchronously. At the same time, the two rotating mechanisms 253 rotate synchronously relative to the positioning seat 251 and move away from each other, so as to drive the two side support members 233 to move away from each other synchronously and flatten, so that the rotating shaft device 22 unfolds, and the bendable area 31 of the flexible member 30 unfolds with the rotating shaft device 22 until the flexible member 30 is flattened.

[0090] During the flattening process described above, the linkage 264 is flattened relative to the positioning seat 261, and the relative distance between the distance sensor 29 and the end face 2601 of the corresponding linkage 264 gradually decreases. Specifically, the relative distance between the connecting rod 2643 of one of the linkages 264 and the end face 2601 of the third positioning seat 261 and the distance sensor 29 gradually decreases. The distance sensor 29 obtains the sliding movement information data of the linkage 264 relative to the distance sensor 29 and transmits it to the motherboard 40. The processor of the motherboard 40 receives the movement information data and calculates the rotation angle of the frame 21, that is, the included angle between the two frames 21. The frictional torque between the first cam 2710 and the second cam 2730 on each rotating shaft 266, the frictional torque between the friction member 276 and the positioning member 275, and the frictional torque between the friction member 276, the positioning member 275, and the snap fastener 278 resist the rebound force of the flexible member 30, so that the two side support members 233 are positioned relative to each other at a specific angle, and the two frames 21 are limited to a specific angle between 130 degrees and 70 degrees.

[0091] In other bending methods of the electronic device 100, an outward pulling force can be applied to both frames 21 at the same time. The two frames 21 respectively drive the two rotating mechanisms 253 to rotate relative to the side away from the flexible member 30, and the electronic device 100 is unfolded through the rotating shaft device 22.

[0092] like Figures 15-23 As shown, by calculating the coordinates of the rotation axis of the rotating component 254 and the rotation axis of the positioning seat 251, and the rotation axis of the linkage component 264 and the third positioning seat 261, the slippage of the linkage component 264 relative to the distance sensor 40 can be obtained. Figure 22 As shown, the design utilizes the principle of rotation: the rotation axis between the linkage 264 and the positioning seat 251 has a first distance L between it and the distance sensor 40; specifically, the rotation axis between the linkage 264 and the third positioning seat 261 has a first distance L between it and the distance sensor 40; the rotation axis between the rotating member 254 and the positioning seat 251 has a second distance M between it and the distance sensor 40, that is, the rotation axis between the rotating member 254 and the first positioning seat 251a and the second positioning seat 251b has a second distance M between it and the distance sensor 40; the rotation axis between the linkage 264 and the third positioning seat 261 has a third distance P between it and the rotation axis between the rotating member 254 and the first positioning seat 251a; the initial angle between the rotation axis of the linkage 264 and the rotation axis of the rotating member 254 is θ. During the rotation of the linkage 264 relative to the positioning seat 251 (i.e., the third positioning seat 261), the linkage 264 slides relative to the connecting member 254, and the rotating member 254 rotates relative to the positioning seat 251 (i.e., the first positioning seat 251a and the second positioning seat 251b) and the connecting member 254. The value of the first gap L changes, the value of the second gap M remains unchanged, and the value of the third gap P remains unchanged. Specifically, during the folding process of the linkage 264 relative to the positioning seat 251 (i.e., the third positioning seat 261), the first gap L gradually increases; during the flattening process of the linkage 264 relative to the positioning seat 251 (i.e., the third positioning seat 261), the first gap L gradually decreases; the second gap M and the third gap P remain constant.

[0093] In this embodiment, during the folding process, the first distance L between the linkages 264 on both sides of the positioning base 251 gradually increases, and the included angle between the two linkages 264 gradually decreases, causing the rotation angle of the frame 21 to gradually decrease. Specifically, the rotation angle of the frame 21 gradually decreases from 0 degrees to 180 degrees, that is, the folding shell 20 changes from a flattened state to a fully folded state. During the flattening process, the first distance L between the linkages 264 on both sides of the positioning base 251 gradually decreases, and the included angle between the two linkages 264 gradually decreases, causing the rotation angle of the frame 21 to gradually decrease. Specifically, the rotation angle of the frame 21 gradually decreases from 180 degrees to 0 degrees, that is, the folding shell 20 changes from a fully folded state to a flattened state.

[0094] The rotation angle of the rotating component 254 relative to the positioning seat 251 is θ = θ0 + X, where θ0 is the initial angle and X is the change in angle; the initial distance from the rotation axis between the linkage component 264 and the third positioning seat 261 to the distance sensor 40 is L0, and the relative distance after rotation is L = L0 + L Δ L Δ This refers to the amount of sliding of the linkage 264 relative to the connecting member 254.

[0095] L 2 =M 2 +P 2 -2L 2 sin 2 θ±2M(P 2 -M 2 sin 2 θ)cos 2 θ;

[0096] L Δ =(M 2 +P 2 -2M 2 sin 2 (θ0+X)±2M(P 2 -M 2 sin 2 (θ0+X))cos 2 (θ0+X))^1 / 2-(M 2 +P 2 -2M 2 sin 2 θ0±2M(P 2 -M 2 sin 2 θ0)cos 2 θ0)^1 / 2;

[0097] The above is the trajectory motion quantity L. Δ The relationship with the rotation angle X; specifically, such as Figure 23As shown:

[0098] When the rotation angle is 0 degrees, the relative distance L is 1.35 mm, and the slippage L Δ It is 0mm;

[0099] When the rotation angle is 10 degrees, the relative distance L is 1.588 mm, and the slippage L Δ It is 0.238mm;

[0100] When the rotation angle is 20 degrees, the relative distance L is 1.831 mm, and the slippage L Δ It is 0.481 mm;

[0101] When the rotation angle is 30 degrees, the relative distance L is 2.081 mm, and the slippage L Δ It is 0.731 mm;

[0102] When the rotation angle is 40 degrees, the relative distance L is 2.336 mm, and the slippage L Δ It is 0.986mm;

[0103] When the rotation angle is 50 degrees, the relative distance L is 2.594 mm, and the slippage L Δ It is 1.244mm;

[0104] When the rotation angle is 60 degrees, the relative distance L is 2.852 mm, and the slippage L Δ It is 1.502mm;

[0105] When the rotation angle is 70 degrees, the relative distance L is 3.103 mm, and the slippage L Δ It is 1.753mm;

[0106] When the rotation angle is 80 degrees, the relative distance L is 3.359 mm, and the slippage L Δ It is 2.009mm;

[0107] When the rotation angle is 90 degrees, the relative distance L is 3.603 mm, and the slippage L Δ It is 2.253mm;

[0108] When the rotation angle is 100 degrees, the relative distance L is 3.836 mm, and the slippage L Δ It is 2.486mm;

[0109] When the rotation angle is 110 degrees, the relative distance L is 4.057 mm, and the slippage L Δ It is 2.707mm;

[0110] When the rotation angle is 120 degrees, the relative distance L is 4.262 mm, and the slippage L Δ It is 2.912mm;

[0111] When the rotation angle is 130 degrees, the relative distance L is 4.451 mm, and the slippage L Δ It is 3.101mm;

[0112] When the rotation angle is 140 degrees, the relative distance L is 4.619 mm, and the slippage L Δ It is 3.269mm;

[0113] When the rotation angle is 150 degrees, the relative distance L is 4.766 mm, and the slippage L Δ It is 3.416mm;

[0114] When the rotation angle is 160 degrees, the relative distance L is 4.890 mm, and the slippage L Δ It is 3.540mm;

[0115] When the rotation angle is 170 degrees, the relative distance L is 4.990 mm, and the slippage L Δ It is 3.640mm;

[0116] When the rotation angle is 180 degrees, the relative distance L is 5.069 mm, and the slip amount L Δ It is 3.719mm.

[0117] The rotating shaft device 22 of the electronic device 100 of the present invention obtains the movement information data of the end face 2601 of the linkage 264 relative to the distance sensor 29 through the distance sensor 29 and transmits it to the motherboard 40. The processor on the motherboard 40 receives the movement information data and calculates the rotation angle of the frame 21 relative to the positioning seat 251. The processor controls the dynamic display of the flexible component 30 according to the rotation angle, thereby realizing the playback of animation effects during the unfolding or folding of the electronic device 100. There is no need to set space for the magnet on the rotating shaft device 22, which is beneficial to the layout of other components of the rotating shaft device 22. The distance sensor 29 can improve the detection accuracy. During the folding or flattening of the electronic device 100, the display of the flexible component 30 will not have a sluggish or delayed effect, which improves the angle detection accuracy, the animation effect, and the user experience. Secondly, the rotating assembly 25 and the linkage assembly 26 achieve synchronous bending or unfolding. When the rotating shaft device 22 is in the bent state, the guide slide 2640 stops at the second limiting section 2330b of the limiting slide groove 2330 to prevent the rotating shaft device 22 from bending further and potentially damaging the flexible component 30. When the rotating shaft device 22 is in the flattened state, the guide slide 2640 stops at the first limiting section 2330a of the limiting slide groove 2330 to prevent the rotating shaft device 22 from unfolding further and potentially damaging the flexible component 30. In addition, there is a large frictional torque between the first cam 2710 and the second cam 2730, and there is also a large frictional torque between the friction component 276 and the positioning component 275, so that the frictional torque is large enough to enable the electronic device 100 to bend and limit at a specific angle, thereby realizing the hovering function of the whole machine.

[0118] Preferably, the distance sensor 29 is an infrared distance sensor.

[0119] like Figure 24As shown, the structure of the electronic device 100a in another embodiment of this application is similar to that of the electronic device 100 in the above embodiment, except that the fixed position of the distance sensor 29 in the electronic device 100a is different from that in the electronic device 100. Specifically, the distance sensor 29 in the electronic device 100a is disposed on one of the connectors 256 so that the distance sensor 29 faces the corresponding linkage 264; furthermore, the distance sensor 29 is fixedly connected to the side of one of the connectors 256 away from the positioning seat 251, so that the distance sensor 29 faces the end face of the corresponding linkage 264. The relative distance L0 between the linkage 264 and the distance sensor 29 in the electronic device 100a may be the same as or different from the relative distance L0 between the linkage 264 and the distance sensor 29 in the electronic device 100. In this embodiment, the relative distance L0 between the linkage 264 and the distance sensor 29 in the electronic device 100a is less than the relative distance L0 between the linkage 264 and the distance sensor 29 in the electronic device 100.

[0120] The folding housing 20 of this application uses a distance sensor 29, which is more accurate than the combination of magnets and Hall sensors in related technologies. By setting an angle ruler in the folding housing 20, the rotation angle of the frame 21 can be measured in real time.

[0121] In other embodiments, the distance sensor 29 may be disposed on other components of the folding housing 20, and the distance sensor 29 is used to obtain movement information data of other components sliding relative to the connector 256 or the frame 21.

[0122] 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 a positioning base, a rotating component, a connecting component, a linkage component, and a distance sensor. The two opposite ends of the rotating component are rotatably connected to the positioning base and the connecting component, respectively. One end of the linkage component is rotatably connected to the positioning base, and the end of the linkage component away from the positioning base is slidably connected to the connecting component. The relative position of the distance sensor and the connecting component is fixed. A first distance exists between the rotation axis of the linkage component and the positioning base and the distance sensor, and a second distance exists between the rotation axis of the rotating component and the positioning base and the distance sensor. During the rotation of the linkage component relative to the positioning base, the linkage component slides relative to the connecting component. The first distance changes, while the second distance remains constant. The relative distance between the distance sensor and the linkage component changes. The distance sensor is used to obtain the sliding movement information data of the linkage component relative to the distance sensor, thereby realizing the rotation angle detection of the rotating shaft device.

2. The rotating shaft device according to claim 1, characterized in that, During the folding process of the linkage relative to the positioning seat, the relative distance between the distance sensor and the linkage gradually increases; during the flattening process of the linkage relative to the positioning seat, the relative distance between the distance sensor and the linkage gradually decreases.

3. The rotating shaft device according to claim 1, characterized in that, The distance sensor is located at the end of the linkage member away from the positioning seat. The linkage member includes an end face facing the distance sensor. During the folding process of the linkage member relative to the positioning seat, the relative distance between the distance sensor and the end face of the linkage member gradually increases. During the flattening process of the linkage member relative to the positioning seat, the relative distance between the distance sensor and the end face of the linkage member gradually decreases.

4. The rotating shaft device according to claim 1, characterized in that, The linkage and the connecting member are slidably connected by the cooperation of the guide groove and the guide rail, and the extension direction of the guide groove is perpendicular to the rotation axis between the linkage and the positioning seat.

5. The rotating shaft device according to claim 4, characterized in that, The linkage component has the guide rail, and the connecting component has the guide groove; or the connecting component has the guide rail, and the linkage component has the guide groove.

6. The rotating shaft device according to claim 1, characterized in that, The rotation axis between the linkage and the positioning seat is parallel to the rotation axis between the rotating component and the positioning seat, and the rotation axis between the linkage and the positioning seat is parallel to the rotation axis between the rotating component and the connecting component.

7. The rotating shaft device according to claim 1, characterized in that, During the folding process of the linkage relative to the positioning seat, the first gap gradually increases; during the flattening process of the linkage relative to the positioning seat, the first gap gradually decreases.

8. The rotating shaft device according to claim 1, characterized in that, The positioning base is provided with the linkage on both sides. During the folding process of the two linkages, the first gap gradually increases and the included angle between the two linkages gradually decreases. During the flattening process of the two linkages, the first gap gradually decreases and the included angle between the two linkages gradually decreases.

9. The rotating shaft device according to any one of claims 1-8, characterized in that, The rotating shaft device further includes two rotating shafts and a gear assembly disposed on the two rotating shafts. The positioning seat is provided with the linkage on opposite sides. The two linkages are respectively connected to the two rotating shafts. The linkages rotate around the axis of the corresponding rotating shaft to drive the rotating shaft to rotate. The two linkages achieve synchronous folding or synchronous flattening through the gear assembly.

10. The rotating shaft device according to claim 9, characterized in that, The rotating shaft device further includes a limiting component, which includes a pushing member, a holding member, and an elastic member disposed on the linkage member. The pushing member includes a first cam, and the holding member includes a second cam. The first cam and the second cam are rotatably abutting against each other. The elastic member has a pre-elastic force that causes the holding member and the pushing member to abut against each other. During the rotation of the first cam of the pushing member relative to the second cam of the holding member, the elastic member is squeezed by the holding member and undergoes elastic deformation. The frictional resistance between the pushing member and the holding member positions the linkage member.

11. The rotating shaft device according to claim 1, characterized in that, The rotating shaft device further includes a support assembly, which includes a side support member. The side support member and the connecting member are rotatably connected by a first arc track and a first arc groove. The rotating member and the positioning seat are rotatably connected by a second arc track and a second arc groove. The axis of the first arc groove is parallel to the axis of the second arc groove. The side support member and the linkage member are slidably connected by a limiting slide groove and a guide slide.

12. The rotating shaft device according to claim 11, characterized in that, The limiting slide includes a first limiting section and a second limiting section located at opposite ends. The first limiting section is further away from the positioning seat than the second limiting section. When the two side supports are in a fully folded state, the guide slide is positioned at the first limiting section. When the two side supports are in a flattened state, the guide slide is positioned at the second limiting section.

13. A folding shell, characterized in that, The folding housing includes a pivot device as described in any one of claims 1-12 and two frames, the pivot device being located between the two frames, the two frames being respectively connected to two connectors of the pivot device, and a distance sensor of the pivot device being disposed in the frame or the connector.

14. An electronic device, characterized in that, The electronic device includes a flexible component, a motherboard, and a folding housing as described in claim 13. The flexible component is disposed on the folding housing, the motherboard is disposed within the frame of the folding housing, and the distance sensor of the rotating shaft device is electrically connected to the motherboard.

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