Folding electronic device

Abstract

Embodiments of the present application provide a folding electronic device for improving the phenomenon that the unfolded display area of the folding electronic device is small. The folding electronic device comprises a flexible screen, a first structural member, a second structural member and a third structural member. The first structural member, the second structural member and the third structural member are located on the same side of the flexible screen. A first rotating mechanism connects the first structural member and the second structural member, and a second rotating mechanism connects the second structural member and the third structural member. The first rotating mechanism comprises a first main shaft, a first rotating member and a first fixing frame. The first rotating member is rotationally connected with the first main shaft, the second rotating member is rotationally connected with the first fixing frame through a first shaft, and the first fixing frame is fixedly connected with the first structural member. The second rotating mechanism comprises a third rotating member, a third fixing frame and a second main shaft. The third rotating member is rotationally connected with the second main shaft, the third rotating member is rotationally connected with the third fixing frame through a third shaft, and the third fixing frame is fixedly connected with the second structural member.

Description

Technical Field

[0001] This application relates to the field of electronic products, and more particularly to a foldable electronic device. Background Technology

[0002] With the continuous development of display technology, foldable display terminals are gradually becoming a development trend for future mobile electronic products. When unfolded, foldable electronic devices can achieve a larger display area, enhancing the viewing experience. When folded, they can achieve a smaller size, making them easy for users to carry.

[0003] The foldable electronic device includes at least a flexible screen and a housing. The housing includes two structural components for supporting the flexible screen and a rotating mechanism. The two structural components are connected to both sides of the rotating mechanism. In actual use, the rotating mechanism drives the two structural components to rotate, causing the foldable electronic device to fold or unfold. Traditional dual-screen foldable electronic devices also suffer from a relatively small display area when unfolded. Summary of the Invention

[0004] This application provides a foldable electronic device to improve the problem of a small display area when the foldable electronic device is unfolded.

[0005] To achieve the above objectives, the embodiments of this application provide the following solutions:

[0006] A foldable electronic device is provided, comprising: a flexible screen, a first structural member, a second structural member, and a third structural member. The first, second, and third structural members are located on the same side of the flexible screen. The foldable electronic device further includes a first rotating mechanism and a second rotating mechanism. The first rotating mechanism connects the first and second structural members, and the second rotating mechanism connects the second and third structural members.

[0007] When the foldable electronic device is in the unfolded state, the third structural component, the second structural component, and the first structural component are arranged in sequence along the second direction. The first structural component, the first rotating mechanism, the second structural component, the second rotating mechanism, and the third structural component together constitute a support plane for supporting the flexible screen.

[0008] When the foldable electronic device is in a folded state, the first structural component, the second structural component, and the third structural component are stacked along a third direction, which is perpendicular to the first direction and the second direction, respectively.

[0009] The first rotating mechanism includes a first rotating shaft assembly, a first main shaft, and a second rotating shaft assembly. The first main shaft extends along a first direction, and a second direction is perpendicular to the first direction. The first rotating shaft assembly includes a first rotating member and a first fixed frame. A first end of the first rotating member is rotatably connected to the first main shaft, and a second end of the second rotating member is rotatably connected to the first fixed frame via a first shaft. The first fixed frame is fixedly connected to a first structural member. The second rotating shaft assembly includes a second rotating member and a second fixed frame. A first end of the second rotating member is rotatably connected to the first main shaft, and a second end of the second rotating member is rotatably connected to the second fixed frame via a second shaft. The second fixed frame is fixedly connected to a second structural member.

[0010] With the above configuration, the first structural component and the second structural component can be connected together via a first rotating mechanism. The first structural component can rotate relative to the first main shaft via a first fixed frame and a first rotating component, and the second structural component can rotate relative to the first main shaft via a second fixed frame and a second rotating component. When the folding electronic device switches between an unfolded state and a folded state, the first structural component can rotate relative to the second structural component via the first rotating mechanism, thereby achieving folding or unfolding of the first structural component relative to the second structural component.

[0011] The second rotating mechanism includes a third rotating shaft assembly, a second main shaft, and a fourth rotating shaft assembly, with the second main shaft extending along a first direction.

[0012] The third rotating shaft assembly may include a third rotating component and a third fixed frame. The first end of the third rotating component is rotatably connected to the second main shaft, the second end of the third rotating component is rotatably connected to the third fixed frame via a third shaft, and the third fixed frame is fixedly connected to the second structural component.

[0013] The fourth rotating shaft assembly may include a fourth rotating component and a fourth fixed frame. The first end of the fourth rotating component is rotatably connected to the second main shaft, the second end of the fourth rotating component is rotatably connected to the fourth fixed frame via a fourth shaft, and the fourth fixed frame is fixedly connected to the third structural component.

[0014] With the above configuration, the third structural component and the second structural component can be connected together via the second rotating mechanism. The second structural component can rotate relative to the second main shaft via the third fixed frame and the third rotating component. The third structural component can also rotate relative to the second main shaft via the fourth fixed frame and the fourth rotating component. When the folding electronic device switches between the unfolded and folded states, the third structural component can rotate relative to the second structural component via the second rotating mechanism, thereby enabling the third structural component to be folded or unfolded relative to the second structural component.

[0015] In summary, by setting the first rotating mechanism, the first structural component can be folded or unfolded relative to the second structural component; by setting the second rotating mechanism, the third structural component can be folded or unfolded relative to the second structural component, so that the foldable electronic device can switch between the unfolded state and the folded state. When the foldable electronic device is in the unfolded state, it is beneficial to increase the display area of ​​the foldable electronic device and improve the user experience.

[0016] In some embodiments, when the foldable electronic device is in a folded state: a first structural member is located between a second structural member and a third structural member; a first rotating mechanism encloses a first accommodating space, and a portion of the flexible screen is located within the first accommodating space; a second rotating mechanism encloses a second accommodating space, and a portion of the flexible screen and a portion of the first structural member are located within the second accommodating space. This arrangement ensures that when the foldable electronic device is in a folded state, the flexible screen is located inside the three structural members, and the cross-sectional shape of the flexible screen can be folded into a G-shape. Because the flexible screen is located inside the three structural members, it is prevented from being exposed. The first, second, and third structural members can protect the flexible screen, preventing damage (e.g., scratches or drops), which improves the reliability of the flexible screen and enhances the lifespan and sophistication of the foldable electronic device.

[0017] In some embodiments, the first rotating shaft assembly includes a first support plate, which is slidably connected to a first rotating member and rotatably connected to a first fixed frame. The second rotating shaft assembly includes a second support plate, which is slidably connected to a second rotating member and rotatably connected to a second fixed frame.

[0018] When the foldable electronic device is in the unfolded state, the first fixing frame, the first support plate, the first main shaft, the second support plate, and the second fixing frame together constitute the support plane of the first rotating mechanism. The first end of the second support plate, the second end of the second support plate, the second end of the first support plate, and the first end of the first support plate are arranged sequentially along the second direction. When the foldable electronic device is in the folded state, the distance between the first end of the first support plate and the first end of the second support plate in the third direction is less than the distance between the second end of the first support plate and the second end of the first support plate in the third direction.

[0019] With the above configuration, when the foldable electronic device is in the unfolded state, it is beneficial to improve the support effect of the first and second pivot assemblies on the flexible screen. When the foldable electronic device is in the folded state, the first accommodating space P1 enclosed by the first fixing frame, the second fixing frame, the first support plate, the second support plate, the first rotating component, the second rotating component, and the first main shaft can allow the flexible screen to be bent into a teardrop shape or a near-teardrop shape, avoiding excessive compression of the flexible screen, thereby reducing the stress on the flexible screen and improving its reliability.

[0020] In some embodiments, the first support plate and the first rotating member are slidably connected via a first guide shaft and a first guide groove. The first guide shaft is disposed on the first support plate, and the first guide groove is disposed on the first rotating member; alternatively, the first guide groove is disposed on the first support plate, and the first guide shaft is disposed on the first support plate. The second support plate and the second rotating member are slidably connected via a second guide shaft and a second guide groove. The second guide shaft is disposed on the second support plate, and the second guide groove is disposed on the second rotating member; alternatively, the second guide groove is disposed on the second support plate, and the second guide shaft is disposed on the second support plate. With the above configuration, the relative positions of the first support plate and the second support plate to the main axis can be changed during the transition between the unfolded state and the folded state of the first rotating mechanism.

[0021] In some embodiments, the first support plate and the first fixed frame are rotatably connected by an arc-shaped slider and an arc-shaped groove. The first support plate includes an arc-shaped slider, and the first fixed frame includes an arc-shaped groove; or, the first support plate includes an arc-shaped groove, and the first fixed frame includes an arc-shaped slider. The second support plate and the first fixed frame are rotatably connected by an arc-shaped slider and an arc-shaped groove. The second support plate includes an arc-shaped slider, and the first fixed frame includes an arc-shaped groove; or, the second support plate includes an arc-shaped groove, and the first fixed frame includes an arc-shaped slider. With the above configuration, the first rotating mechanism can change the relative position of the first support plate and the second support plate to their main axes during the transition between the unfolded and folded states.

[0022] In some embodiments, the first rotating shaft assembly includes a first swing arm, a first end of which is rotatably connected to a first main shaft, and a second end of which is slidably connected to a first fixed frame via a first sliding groove. The second end of the first swing arm can slide relative to the first fixed frame along the extending direction of the first sliding groove, which intersects with a first direction. The second rotating shaft assembly includes a second swing arm, a first end of which is rotatably connected to a second main shaft, and a second end of which is slidably connected to a second fixed frame via a second sliding groove. The second end of the second swing arm can slide relative to the second fixed frame along the extending direction of the second sliding groove, which intersects with the first direction. This configuration facilitates adjusting the length between the first and second fixed frames, ensuring that the length of the flexible screen covering the first and second structural members remains unchanged, and mitigating the squeezing or stretching effect of the first rotating mechanism on the flexible screen.

[0023] In some embodiments, the first end of the first swing arm includes a first concave-convex surface, and the first end of the second swing arm includes a second concave-convex surface. The first rotation mechanism further includes a first damping slider and a first elastic element. The first elastic element is disposed on the first main shaft along a first direction. The first damping slider is slidably connected to the first main shaft and can slide relative to the first main shaft along the first direction. The first end of the first damping slider contacts the first elastic element, and the second end of the first damping slider includes a third concave-convex surface that cooperates with the first concave-convex surface and a fourth concave-convex surface that cooperates with the second concave-convex surface.

[0024] With the above configuration, when the first rotating mechanism switches between the unfolded and folded states, the first swing arm rotates relative to the first main shaft. Because the first concave-convex surface of the first swing arm engages with the third concave-convex surface of the first damping slider, the first swing arm drives the first damping slider to slide relative to the first main shaft along a first direction. The first damping slider then drives the first elastic element to compress and deform. The elastic restoring force of the first elastic element acts as a damping force, thus providing a damping effect when the first swing arm rotates relative to the first main shaft. Simultaneously, the second swing arm rotates relative to the first main shaft. Because the second concave-convex surface of the second swing arm engages with the fourth concave-convex surface of the first damping slider, the second swing arm drives the first damping slider to slide relative to the first main shaft along a first direction. The first damping slider then drives the first elastic element to compress and deform. The elastic restoring force of the first elastic element acts as a damping force, thus providing a damping effect when the second swing arm rotates relative to the first main shaft.

[0025] In some embodiments, the first end of the first swing arm further includes a first gear, and the second end of the second swing arm further includes a second gear. The first rotating mechanism further includes a meshing third gear and a fourth gear, both of which are disposed on the first main shaft. The third gear meshes with the first gear, and the fourth gear meshes with the second gear. Through the above arrangement, by means of the engagement between the helical surfaces, the first swing arm can rotate relative to the first main shaft while the second swing arm rotates relative to the first main shaft, thereby achieving synchronous movement of the first and second swing arms, and further achieving synchronous movement of the first and second rotating shaft assemblies.

[0026] In some embodiments, when the foldable electronic device is in a flat state, the third fixed frame, the third rotating member, the second main shaft, the fourth rotating member, and the fourth fixed frame together constitute the support plane of the second rotating mechanism; when the foldable electronic device is in a folded state, the support surface of the third fixed frame is parallel to the support surface of the fourth fixed frame, and both the support surfaces of the third fixed frame and the fourth fixed frame are perpendicular to a third direction.

[0027] With the above configuration, when the foldable electronic device is in the unfolded state, the third fixing frame, the third rotating component, the second main shaft, the fourth rotating component, and the fourth fixing frame can work together to support the flexible screen. When the foldable electronic device is in the folded state, the second accommodating space enclosed by the third fixing frame, the third rotating component, the second main shaft, the fourth rotating component, and the fourth fixing frame allows the flexible screen to bend into a U-shape. This increases the volume of the second accommodating space, avoids excessive compression of the flexible screen, thereby reducing the stress on the flexible screen and improving its reliability.

[0028] In some embodiments, the third rotating shaft assembly includes a third swing arm, a first end of which is rotatably connected to the second main shaft, and a second end of which is slidably connected to the third fixed frame via a third slide groove. The second end of the third swing arm can slide relative to the third fixed frame along the extending direction of the third slide groove, which intersects with the first direction. The fourth rotating shaft assembly includes a fourth swing arm, a first end of which is rotatably connected to the second main shaft, and a second end of which is slidably connected to the fourth fixed frame via a fourth slide groove. The second end of the fourth swing arm can slide relative to the fourth fixed frame along the extending direction of the fourth slide groove, which intersects with the first direction.

[0029] The above settings facilitate the adjustment of the length between the third and fourth fixing frames, ensure that the length of the flexible screen covering the second and third structural components remains unchanged, and mitigate the squeezing or stretching of the flexible screen by the second rotating mechanism.

[0030] In some embodiments, at least a portion of the third fixing frame is located between the third swing arm and the flexible screen, and at least a portion of the fourth fixing frame is located between the fourth swing arm and the flexible screen.

[0031] The above configuration avoids interference between the fourth swing arm and the flexible screen when the fourth swing arm moves relative to the fourth fixed frame, and also avoids interference between the third swing arm and the flexible screen when the third swing arm moves relative to the third fixed frame. Simultaneously, it improves the assembly compactness between the third swing arm and the third fixed frame, improves the assembly compactness between the fourth swing arm and the fourth fixed frame, and reduces the size of the second rotating mechanism.

[0032] In some embodiments, the first end of the third swing arm includes a fifth concave-convex surface, and the first end of the fourth swing arm includes a sixth concave-convex surface. The second rotation mechanism further includes a second damping slider and a second elastic member. The second elastic member is disposed on the second main shaft along a first direction. The second damping slider is slidably connected to the second main shaft and can slide relative to the second main shaft along the first direction. The first end of the second damping slider contacts the second elastic member, and the second end of the second damping slider includes a seventh concave-convex surface that mates with the fifth concave-convex surface and an eighth concave-convex surface that mates with the sixth concave-convex surface.

[0033] When the second rotating mechanism switches between the unfolded and folded states, the third rotating component rotates relative to the second main shaft. The third rotating component drives the second damping slider to slide relative to the second main shaft along a first direction. The second damping slider drives the second elastic component to compress and deform. The elastic restoring force of the second elastic component acts as a damping force, thus providing a damping effect when the third rotating component rotates relative to the second main shaft. Simultaneously, the fourth rotating component rotates relative to the second main shaft. The fourth rotating component drives the second damping slider to slide relative to the second main shaft along a first direction. The second damping slider drives the second elastic component to compress and deform. The elastic restoring force of the second elastic component acts as a damping force, thus providing a damping effect when the fourth rotating component rotates relative to the second main shaft.

[0034] In some embodiments, the first end of the third swing arm includes a first helical surface, and the first end of the fourth swing arm includes a second helical surface. The second rotation mechanism further includes a synchronizing slider, which is slidably connected to the second main shaft. The synchronizing slider can slide relative to the second main shaft along a first direction. The synchronizing slider includes a third helical surface that engages with the first helical surface and a fourth helical surface that engages with the second helical surface. With this configuration, the third and fourth rotating shaft assemblies can achieve synchronous rotation through the engagement between the helical surfaces. Attached Figure Description

[0035] Figure 1 This is a structural diagram of a foldable electronic device in its unfolded state, provided in an embodiment of this application.

[0036] Figure 2 for Figure 1 A structural diagram of a foldable electronic device after the flexible screen has been removed.

[0037] Figure 3 This is a structural diagram of a foldable electronic device in a folded state, provided in an embodiment of this application.

[0038] Figure 4 for Figure 3 A structural diagram of the folding electronic device along section AA;

[0039] Figure 5 A partial enlarged view of M1 when the first rotating mechanism is in the deployed state, provided in an embodiment of this application;

[0040] Figure 6 for Figure 5 Exploded view of the structure of the first rotating mechanism in the diagram;

[0041] Figure 7 A partial enlarged view of M1 when the first rotating mechanism is in a folded state, as provided in an embodiment of this application;

[0042] Figure 8A partial enlarged view of M2 when the second rotating mechanism is in the deployed state, as provided in an embodiment of this application;

[0043] Figure 9 for Figure 8 Exploded view of the second rotating mechanism in the diagram;

[0044] Figure 10 A partial enlarged view of M2 when the second rotating mechanism is in a folded state, as provided in an embodiment of this application;

[0045] Figure 11 An exploded view of the structure of a first main shaft provided in an embodiment of this application;

[0046] Figure 12 An exploded view of the assembly structure of a first rotating member, a second rotating member, and other components provided in an embodiment of this application;

[0047] Figure 13 for Figure 7 A cross-sectional view along section line BB when the first rotating mechanism is in the deployed state;

[0048] Figure 14 for Figure 7 A cross-sectional view along section line BB when the first rotating mechanism is in the folded state;

[0049] Figure 15 An assembly structure diagram of a first rotating member and a first fixed frame, a second rotating member and a second fixed frame, provided in an embodiment of this application, from another perspective;

[0050] Figure 16 An assembly structure diagram of a first rotating member and a first support plate, a second rotating member and a second support plate, provided in an embodiment of this application, from another perspective;

[0051] Figure 17 for Figure 7 A cross-sectional view along the CC section line when the first rotating mechanism is in the deployed state;

[0052] Figure 18 for Figure 7 A cross-sectional view along the CC section line when the first rotating mechanism is in the folded state;

[0053] Figure 19 for Figure 7 A cross-sectional view along section line DD when the first rotating mechanism is in the deployed state;

[0054] Figure 20 for Figure 7 A cross-sectional view along section line DD when the first rotating mechanism is in the folded state;

[0055] Figure 21 Exploded views of the assembly structures of the first and second swing arms with the main shaft provided in the embodiments of this application;

[0056] Figure 22 An exploded view of the structure of a second main shaft provided in an embodiment of this application;

[0057] Figure 23 An exploded view of the assembly structure of a third rotating member and a fourth rotating member with other components provided in an embodiment of this application;

[0058] Figure 24 for Figure 10 A cross-sectional view along section line KK when the second rotating mechanism is in the unfolded state;

[0059] Figure 25 for Figure 10 A cross-sectional view along section line KK when the second rotating mechanism is in the folded state;

[0060] Figure 26 An exploded view of the assembly structure of a third swing arm and a third fixed frame, a fourth swing arm and a fourth fixed frame, provided in an embodiment of this application, from another perspective;

[0061] Figure 27 for Figure 10 A cross-sectional view along the RR section line when the second rotating mechanism is in the deployed state;

[0062] Figure 28 for Figure 10 A cross-sectional view along the RR section line when the second rotating mechanism is in the folded state;

[0063] Figure 29 Exploded view of the assembly structure of the third and fourth swing arms with the second spindle provided in the embodiments of this application. Detailed Implementation

[0064] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0065] In the following description, the terms "first," "second," etc., are used for ease of description only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "multiple" means two or more.

[0066] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0067] In the embodiments of this application, the directional indications used to explain the structure and movement of different components, such as up, down, left, right, front, and back, are relative. These indications are appropriate when the components are in the positions shown in the figures. However, if the description of the component positions changes, these directional indications will also change accordingly.

[0068] This application provides a foldable electronic device. The foldable electronic device can be a mobile phone, tablet computer, television, smart wearable products (e.g., smartwatch, smart bracelet), or other terminal products.

[0069] To facilitate understanding of the foldable electronic device 1 provided in the embodiments of this application. Figure 1 This is a structural diagram of a foldable electronic device in its unfolded state, provided in an embodiment of this application. Figure 2 for Figure 1 A structural diagram of a foldable electronic device after the flexible screen has been removed. Figure 3 This is a structural diagram of a foldable electronic device in a folded state, provided in an embodiment of this application. Figure 4 for Figure 3 The structural diagram of the foldable electronic device along the AA section line.

[0070] The following is combined Figure 1 , Figure 2 , Figure 3 as well as Figure 4 The following is a description of a foldable electronic device 1:

[0071] The foldable electronic device 1 includes a flexible screen 30. The flexible screen 30 can be an active matrix organic light emitting diode (AMOLED) display.

[0072] As a self-emissive display, AMOLED displays do not require a backlight module (BLM). Therefore, when the substrate of an AMOLED display is made of a flexible resin material, such as polyethylene terephthalate (PET), the AMOLED display can be bent.

[0073] In addition, the foldable electronic device 1 also includes a first rotating mechanism 10, a second rotating mechanism 40, a first structural member 21, a second structural member 22, and a third structural member 23 for supporting the flexible screen 30. The first rotating mechanism 10 is connected between the first structural member 21 and the second structural member 22. The second rotating mechanism 40 is connected between the second structural member 22 and the third structural member 23. The first structural member 21, the second structural member 22, and the third structural member 23 support the flexible screen 30, ensuring that the flexible screen 30 remains as flat as possible during use and protecting the non-display surface of the flexible screen 30. The first structural member 21 and the second structural member 22 can rotate relative to the first rotating mechanism 10, and the second structural member 22 and the third structural member 23 can rotate relative to the second rotating mechanism 40.

[0074] This application embodiment only briefly illustrates some of the structures of the first structural member 21, the second structural member 22, and the third structural member 23, and the accompanying drawings are also simplified. This application embodiment does not strictly limit the specific structure of the first structural member 21, the second structural member 22, and the third structural member 23.

[0075] The first structural member 21, the second structural member 22, and the third structural member 23 may each include a mid-frame structure. The space enclosed by the mid-frame structure is used to install and fix other components of the foldable electronic device 1, such as a camera, earphone, earpiece, buttons, and battery. Furthermore, other electronic components may also be provided on the first structural member 21, the second structural member 22, and the third structural member 23. This embodiment of the application does not limit the other electronic components provided on the first structural member 21, the second structural member 22, and the third structural member 23.

[0076] For example, the flexible screen 30 is located on the same side of the first structural member 21, the second structural member 22, and the third structural member 23. A portion of the flexible screen 30 can be fixed to the first structural member 21, the second structural member 22, and the third structural member 23 by an adhesive layer. A portion of the flexible screen 30 can also be fixed to the first rotating mechanism 10 and the second rotating mechanism 40 by an adhesive layer. This adhesive layer can be a thin film layer formed after applying adhesive, and the specific form of the adhesive layer is not limited in this embodiment. For example, the adhesive layer can be an intermittent thin film layer, or it can be a continuous thin film layer.

[0077] like Figure 1 and Figure 2As shown, when the foldable electronic device 1 is in the unfolded state, the first structural member 21, the second structural member 22, and the third structural member 23 are arranged in sequence. For example, the included angles between the first structural member 21 and the second structural member 22, and between the second structural member 22 and the third structural member 23, can be approximately 180° (understandably, the included angles between the first structural member 21 and the second structural member 22, and between the second structural member 22 and the third structural member 23, are also allowed to have certain deviations, for example, the included angles can be 165°, 177°, or 185°).

[0078] When the folding electronic device 1 is in the unfolded state, both the first rotating mechanism 10 and the second rotating mechanism 40 are in the unfolded state.

[0079] The first structural member 21, the first rotating mechanism 10, the second structural member 22, the second rotating mechanism 40, and the third structural member 23 together form a supporting plane S. The supporting plane S can be used to support the flexible screen 30, improving the flatness of the flexible screen 30 in its unfolded state. Here, "supporting plane S" can be understood as a plane or an approximate plane. The plane can be an absolute surface or an approximate plane. The approximate plane can be a slightly undulating surface, and the acceptable deviation range of the approximate plane can be, for example, within 5%.

[0080] In some embodiments, the flexible screen 30 can be fixed to the first structural member 21, the first rotating mechanism 10, the second structural member 22, the second rotating mechanism 40, and the third structural member 23 by an adhesive layer. The support effect of the first structural member 21, the first rotating mechanism 10, the second structural member 22, the second rotating mechanism 40, and the third structural member 23 on the flexible screen 30 can be adjusted by adjusting the thickness of the adhesive layer so that the first structural member 21, the first rotating mechanism 10, the second structural member 22, the second rotating mechanism 40, and the third structural member 23 together form the support plane S, thereby ensuring that the flexible screen 30 is in its unfolded state when unfolded. In this case, "together forming the supporting plane S" can also be understood as adjusting the thickness of the adhesive layer so that the first structural member 21, the first rotating mechanism 10, the second structural member 22, the second rotating mechanism 40, and the third structural member 23 together form the supporting plane S, thereby ensuring that the flexible screen 30 is in its unfolded state when unfolded.

[0081] When the folding electronic device 1 transitions from an unfolded state to a folded state, the first structural member 21 rotates relative to the second structural member 22 via the first rotating mechanism 10, and the third structural member 23 rotates relative to the second structural member 22 via the second rotating mechanism 40.

[0082] In this embodiment, when the foldable electronic device 1 is in a double-folded state, the first structural member 21, the second structural member 22, and the third structural member 23 can also be in a double-folded state. For example, the first structural member 21 and the second structural member 22 are stacked, and the third structural member 23 and the second structural member 22 are arranged along the second direction Y. In this case, the first rotating mechanism 10 is in a folded state, and the second rotating mechanism 40 is in an unfolded state. As another example, the third structural member 23 and the second structural member 22 are stacked, and the first structural member 21 and the second structural member 22 are arranged along the second direction Y. In this case, the second rotating mechanism 40 is in a folded state, and the first rotating mechanism 10 is in an unfolded state.

[0083] When the foldable electronic device 1 is in a tri-fold state, the first structural component 21, the second structural component 22, and the third structural component 23 can also be in a tri-fold state.

[0084] like Figure 3 and Figure 4 As shown, when the foldable electronic device 1 is in a folded state, the first structural member 21, the second structural member 22, and the third structural member 23 are stacked. The angle between the first structural member 21 and the second structural member 22 can be approximately 0° (understandably, a slight deviation is allowed in the angle between the first structural member 21 and the second structural member 22, for example, the angle can be 1°, 3°, or 5°). At this time, the flexible screen 30 located between the first structural member 21 and the second structural member 22 is in a folded state, and the first rotating mechanism 10 is also in a folded state. The angle between the second structural member 22 and the third structural member 23 can be approximately 0° (understandably, a slight deviation is allowed in the angle between the second structural member 22 and the third structural member 23, for example, the angle can be 1°, 3°, or 5°). At this time, the flexible screen 30 located between the second structural member 22 and the third structural member 23 is in a folded state, and the second rotating mechanism 40 is also in a folded state.

[0085] When the foldable electronic device 1 is in a triple-fold state, the first rotating mechanism 10 and the second rotating mechanism 40 are in a folded state. The following explanation only uses the triple-fold state of the foldable electronic device 1 as an example.

[0086] For ease of explanation, the extension direction of the first rotating mechanism 10 is defined as the first direction X, the sequential arrangement direction of the third structural member 23, the second structural member 22 and the first structural member 21 when the foldable electronic device 1 is in the unfolded state is defined as the second direction Y, and the direction perpendicular to the support plane S is defined as the third direction Z; when the foldable electronic device 1 is in the folded state, the first structural member 21, the second structural member 22 and the third structural member 23 are stacked along the third direction Z; the second direction Y is perpendicular to the first direction X, and the third direction Z is perpendicular to the plane containing the first direction X and the second direction Y.

[0087] Figure 5 A partial enlarged view of M1 when the first rotating mechanism is in the deployed state, provided in an embodiment of this application; Figure 6 for Figure 5 Exploded view of the structure of the first rotating mechanism in the diagram; Figure 7 This is a partial enlarged view of M1 when the first rotating mechanism is in a folded state, as provided in an embodiment of this application.

[0088] In the embodiments of this application, reference is made to Figure 5 , Figure 6 as well as Figure 7 As shown, the first rotating mechanism 10 may include a first rotating shaft assembly 200, a first main shaft 100 and a second rotating shaft assembly 300, with the first main shaft 100 extending along a first direction X.

[0089] The first rotating shaft assembly 200 may include a first rotating member 210 and a first fixed frame 230. The first end 210a of the first rotating member is rotatably connected to the first main shaft 100, the second end 210b of the first rotating member is rotatably connected to the first fixed frame 230 via a first shaft 220, and the first fixed frame 230 is fixedly connected to the first structural member 21.

[0090] The second rotating shaft assembly 300 may include a second rotating member 310 and a second fixed frame 330. The first end 310a of the second rotating member is rotatably connected to the first main shaft 100, the second end 310b of the second rotating member is rotatably connected to the second fixed frame 330 via a second shaft 320, and the second fixed frame 330 is fixedly connected to the second structural member 22.

[0091] For example, when the first rotating mechanism is in the deployed state, the first end 210a of the first rotating member can be the left end of the first rotating member 210, and the second end 210b of the first rotating member can be the right end of the first rotating member 210. The first end 310a of the second rotating member can be the right end of the second rotating member 310, and the second end 310b of the second rotating member can be the left end of the second rotating member 310.

[0092] For example, the first fixing bracket 230 and the first structural member 21 can be fixedly connected by bolts or other threaded fasteners. Similarly, the second fixing bracket 330 and the second structural member 22 can be fixedly connected by bolts or other threaded fasteners. Of course, the embodiments of this application do not limit the fixing connection method between the first fixing bracket 230 and the first structural member 21, or between the second fixing bracket 330 and the second structural member 22.

[0093] With the above configuration, the first structural component 21 and the second structural component 22 can be connected together via the first rotating mechanism 10. The first structural component 21 can rotate relative to the first main shaft 100 via the first fixing frame 230 and the first rotating component 210, and the second structural component 22 can rotate relative to the first main shaft 100 via the second fixing frame 330 and the second rotating component 310. When the folding electronic device 1 switches between the unfolded state and the folded state, the first structural component 21 can rotate relative to the second structural component 22 via the first rotating mechanism 10, thereby realizing the folding or unfolding of the first structural component 21 relative to the second structural component 22.

[0094] Figure 8 A partial enlarged view of M2 when the second rotating mechanism is in the deployed state, as provided in an embodiment of this application; Figure 9 for Figure 8 Exploded view of the second rotating mechanism in the diagram; Figure 10 This is a partial enlarged view of M2 when the second rotating mechanism is in a folded state, as provided in an embodiment of this application.

[0095] In the embodiments of this application, reference is made to Figure 8 , Figure 9 as well as Figure 10 The second rotating mechanism 40 includes a third rotating shaft assembly 800, a second main shaft 700, and a fourth rotating shaft assembly 900, with the second main shaft 700 extending along a first direction X.

[0096] The third rotating shaft assembly 800 may include a third rotating member 810 and a third fixed frame 830. The first end 810a of the third rotating member is rotatably connected to the second main shaft 700, the second end 810b of the third rotating member is rotatably connected to the third fixed frame 830 via a third shaft 840, and the third fixed frame 830 is fixedly connected to the second structural member 22.

[0097] The fourth rotating shaft assembly 900 may include a fourth rotating member 910 and a fourth fixed frame 930. The first end 910a of the fourth rotating member is rotatably connected to the second main shaft 700, the second end 910b of the fourth rotating member is rotatably connected to the fourth fixed frame 930 via a fourth shaft 940, and the fourth fixed frame 930 is fixedly connected to the third structural member 23.

[0098] For example, when the second rotating mechanism 40 is in the deployed state, the first end 810a of the third rotating member can be the left end of the third rotating member 810, and the second end 810b of the third rotating member can be the right end of the third rotating member 810. The first end 910a of the fourth rotating member can be the right end of the fourth rotating member 910, and the second end 910b of the fourth rotating member can be the left end of the fourth rotating member 910.

[0099] For example, the second structural member 22 and the third fixing bracket 830 can be fixedly connected by bolts or other threaded fasteners. Similarly, the third structural member 23 and the fourth fixing bracket 930 can be fixedly connected by bolts or other threaded fasteners. Of course, the embodiments of this application do not limit the fixed connection method between the second structural member 22 and the third fixing bracket 830, or between the third structural member 23 and the fourth fixing bracket 930.

[0100] With the above configuration, the third structural member 23 and the second structural member 22 can be connected together via the second rotating mechanism 40. The second structural member 22 can rotate relative to the second main shaft 700 via the third fixing frame 830 and the third rotating member 810. The third structural member 23 can rotate relative to the second main shaft 700 via the fourth fixing frame 930 and the fourth rotating member 910. When the folding electronic device 1 switches between the unfolded state and the folded state, the third structural member 23 can rotate relative to the second structural member 22 via the second rotating mechanism 40, thereby realizing the folding or unfolding of the third structural member 23 relative to the second structural member 22.

[0101] In summary, by setting the first rotating mechanism 10, the first structural component 21 can be folded or unfolded relative to the second structural component 22; by setting the second rotating mechanism 40, the third structural component 23 can be folded or unfolded relative to the second structural component 22, so that the foldable electronic device can switch between the unfolded state and the folded state. When the foldable electronic device is in the unfolded state, it is beneficial to increase the display area of ​​the foldable electronic device and improve the user experience.

[0102] In some embodiments, combined with Figure 4 As shown, when the foldable electronic device 1 is in a folded state: the first structural member 21 is located between the second structural member 22 and the third structural member 23, the first rotating mechanism 10 encloses the first accommodating space P1, a portion of the flexible screen 30 is located in the first accommodating space P1, the second rotating mechanism 40 encloses the second accommodating space P2, a portion of the flexible screen 30 and a portion of the first structural member 21 are located in the second accommodating space P2.

[0103] For example, in the foldable electronic device 1 of this application embodiment, when transitioning from an unfolded state to a folded state, the first structural member 21 and the second structural member 22 can be folded inward by the first rotating mechanism 10, and then the third structural member 23 and the second structural member 22 can be folded inward by the second rotating mechanism 40. The first accommodating space P1 can be smaller than the second accommodating space P2, so that the second accommodating space P2 can accommodate a portion of the flexible screen 30 and a portion of the first structural member 21.

[0104] With the above configuration, when the foldable electronic device 1 is in the folded state, the flexible screen 30 is located inside the three structural components, and the cross-sectional shape of the flexible screen 30 can be folded into a G-shape. Because the flexible screen 30 is located inside the three structural components, it is prevented from being exposed. The first structural component 21, the second structural component 22, and the third structural component 23 can protect the flexible screen 30, preventing damage (such as scratches or drops), which helps improve the reliability of the flexible screen 30 and enhances the lifespan and sophistication of the foldable electronic device 1.

[0105] Of course, in some embodiments, when the foldable electronic device 1 is in a folded state, the first structural member 21, the second structural member 22, and the third structural member 23 can be arranged in other ways, and correspondingly, the cross-sectional shape of the flexible screen 30 can be folded into other shapes. For example, when the first structural member 21, the second structural member 22, and the third structural member 23 are stacked along the third direction Z, the second structural member 22 can be located between the first structural member 21 and the third structural member 23, and the cross-sectional shape of the flexible screen 30 can be folded into an S-shape.

[0106] With the above settings, when the foldable electronic device 1 is in a folded state, part of the flexible screen 30 can be exposed, so that the user can still use the flexible screen 30 when the foldable electronic device 1 is in a folded state, thus increasing the application scenarios of the foldable electronic device 1.

[0107] The following is for reference. Figures 11 to 21 The structure of the first rotating mechanism 10 will be further explained.

[0108] Figure 11 An exploded view of the structure of a first main shaft provided in an embodiment of this application.

[0109] In some embodiments, refer to Figure 11 The first main shaft 100 may include a first main outer shaft 110 and a first main inner shaft, wherein the first main inner shaft and the first main outer shaft 110 are stacked, and the first main inner shaft is located between the flexible screen 30 and the first main outer shaft 110, and the first main inner shaft is used to support the flexible screen 30. The first main inner shaft may include a first shaft portion 121 and a second shaft portion 122 stacked, wherein the second shaft portion 122 is located between the first shaft portion 121 and the first main outer shaft 110.

[0110] The first shaft portion 121 and the second shaft portion 122 together form a first arc-shaped slide groove 101 and a second arc-shaped slide groove 102. The first arc-shaped slide groove 101 and the second arc-shaped slide groove 102 can be arranged at intervals along the second direction Y, and the central axis of the first arc-shaped slide groove 101 and the central axis of the second arc-shaped slide groove 102 are both parallel to the first direction X.

[0111] Figure 12An exploded view of the assembly structure of a first rotating member, a second rotating member, and other components provided in an embodiment of this application.

[0112] Correspondingly, combined Figure 12 The first end 210a of the first rotating member may include a first arc-shaped slider 211, which is slidably connected to the first arc-shaped groove 101, so that the first end 210a of the first rotating member and the first main shaft 100 can be rotatably connected through a virtual axis connection. The first end 310a of the second rotating member may include a second arc-shaped slider 311, which is slidably connected to the second arc-shaped groove 102, so that the first end 310a of the second rotating member and the first main shaft 100 can be rotatably connected through a virtual axis connection.

[0113] With the above settings, the rotation axis of the first rotating member 210 relative to the first main shaft 100 and the rotation axis of the second rotating member 310 relative to the first main shaft 100 are both parallel to the first direction X and do not coincide.

[0114] Figure 13 for Figure 7 A cross-sectional view along section line BB when the first rotating mechanism is in the deployed state; Figure 14 for Figure 7 A sectional view along section line BB when the first rotating mechanism is in the folded state.

[0115] Reference Figure 13 and Figure 14 As the rotating mechanism transitions from a folded state to an unfolded state, the portion of the first arc-shaped slider 211 located in the first arc-shaped groove 101 gradually increases, and the portion of the second arc-shaped slider 311 located in the second arc-shaped groove 102 gradually increases. Conversely, as the rotating mechanism transitions from an unfolded state to a folded state, the portion of the first arc-shaped slider 211 located in the first arc-shaped groove 101 gradually decreases, and the portion of the second arc-shaped slider 311 located in the second arc-shaped groove 102 gradually decreases.

[0116] In addition, in some embodiments, the first rotating member 210 may also include a first arc-shaped slide groove 101, and the first main shaft 100 may include a first arc-shaped slider 211; the second rotating member 310 may also include a second arc-shaped slide groove 102, and the first main shaft 100 may include a second arc-shaped slider 311.

[0117] Of course, the first rotating member 210 and the first spindle 100 can also be rotatably connected by other virtual axis connection methods, and the second rotating member 310 and the first spindle 100 can also be rotatably connected by other virtual axis connection methods. This application embodiment does not limit this.

[0118] Continue to refer to Figure 12In some embodiments, the second end 210b of the first rotating member and the first fixed frame 230 can be rotatably connected via a first shaft 220. For example, both the second end 210b of the first rotating member and the first fixed frame 230 are provided with mating holes. The first shaft 220 is disposed within the mating hole of the second end 210b of the first rotating member, and also within the mating hole of the first fixed frame 230, so that the second end 210b of the first rotating member and the first fixed frame 230 can be rotatably connected via a solid shaft.

[0119] Similarly, the second end 310b of the second rotating member and the second fixed frame 330 can be rotatably connected via the second shaft 320. For example, both the second end 310b of the second rotating member and the second fixed frame 330 are provided with mating holes. The second shaft 320 is disposed within the mating hole of the second end 310b of the second rotating member, and also within the mating hole of the second fixed frame 330, so that the second end 310b of the second rotating member and the second fixed frame 330 can be rotatably connected via a solid shaft.

[0120] With the above arrangement, since the first rotating member 210 and the first fixed frame 230 are rotatably connected by a solid shaft, the connection strength between the first rotating member 210 and the first fixed frame 230 is improved. Similarly, the second rotating member 310 and the second fixed frame 330 are rotatably connected by a solid shaft, which also improves the connection strength between the second rotating member 310 and the second fixed frame 330.

[0121] Figure 15 This is an assembly structure diagram of a first rotating member and a first fixed frame, a second rotating member and a second fixed frame, provided as an embodiment of this application, from another perspective. This perspective is the viewpoint observed from the first main axis towards the flexible screen.

[0122] Furthermore, when the foldable electronic device 1 is in the unfolded state, at least a portion of the second end 210b of the first rotating member and at least a portion of the first fixing frame 230 can overlap in a direction perpendicular to the support plane (e.g., the third direction Z), and at least a portion of the second end 310b of the second rotating member and at least a portion of the second fixing frame 330 can overlap. For example, the second end 210b of the first rotating member can be located on the side of the first fixing frame 230 away from the flexible screen 30, and the second end 310b of the second rotating member can be located on the side of the second fixing frame 330 away from the flexible screen 30. This arrangement improves the assembly compactness between the first rotating member 210 and the first fixing frame 230, and between the second rotating member 310 and the second fixing frame 330, and helps reduce the space occupied by the first rotating mechanism 10.

[0123] In some embodiments, refer to Figure 5 and Figure 6The first rotating shaft assembly 200 may further include a first support plate 240. The first support plate 240 is slidably connected to the first rotating member 210, and the first support plate 240 is also rotatably connected to the first fixed frame 230. The second rotating shaft assembly 300 may further include a second support plate 340. The second support plate 340 is slidably connected to the second rotating member 310, and the second support plate 340 is also rotatably connected to the second fixed frame 330.

[0124] For example, the first support plate 240 can be a single-piece structure, such as a generally integral flat plate structure. Alternatively, the first support plate 240 may also comprise multiple flat plate structures joined together. For example, Figure 6 The first support plate 240 may include two sub-plates joined together, and the two sub-plates can be fixedly connected together. Similarly, the second support plate 340 may be a single, integral structure. Or, Figure 6 The second support plate 340 may also include two sub-plates spliced ​​together, and the two sub-plates can be fixedly connected together.

[0125] With the above settings, the first rotating mechanism 10 can change the relative position of the first support plate 240 and the second support plate 340 to the main axis during the transition between the unfolded state and the folded state.

[0126] Continue to refer to Figure 13 When the folding electronic device 1 is in the unfolded state, the first fixing frame 230, the first support plate 240, the first main shaft 100, the second support plate 340 and the second fixing frame 330 can together form the support plane S of the first rotating mechanism 10.

[0127] In this configuration, the first support plate 240 and the first fixing frame 230 together constitute at least a portion of the support surface of the first rotating shaft assembly 200, and the second support plate 340 and the second fixing frame 330 together constitute at least a portion of the support surface of the second rotating shaft assembly 300. This arrangement improves the support effect of the first rotating shaft assembly 200 and the second rotating shaft assembly 300 on the flexible screen 30.

[0128] Continue to refer to Figure 13 When the foldable electronic device 1 is in the unfolded state, the first end 340a of the second support plate, the second end 340b of the second support plate, the second end 240b of the first support plate, and the first end 240a of the first support plate are arranged sequentially along the second direction Y. (Continue referring to...) Figure 14 When the foldable electronic device 1 is in a folded state, the distance between the first end 240a of the first support plate and the first end 340a of the second support plate in the third direction Z is less than the distance between the second end 240b of the first support plate in the third direction Z.

[0129] For example, in the direction near the first main shaft 100, the distance between the support surfaces of the first support plate 240 and the second support plate 340 gradually increases along the third direction Z. For example, the first fixing frame 230, the second fixing frame 330, the first support plate 240, the second support plate 340, the first rotating member 210, the second rotating member 310, and the first main shaft 100 together enclose the first accommodating space P1, which allows the flexible screen 30 to be bent into a teardrop shape or a near-teardrop shape. Through the above arrangement, excessive compression of the flexible screen 30 is avoided, thereby reducing the stress on the flexible screen 30 and improving the reliability of the flexible screen 30.

[0130] Figure 16 This is an assembly structure diagram of a first rotating member and a first support plate, a second rotating member and a second support plate, provided as an embodiment of this application, from another perspective. This perspective is the viewpoint observed from the first main axis towards the flexible screen.

[0131] In some embodiments, refer to Figure 6 and Figure 16 The first support plate 240 and the first rotating member 210 can be slidably connected by a first guide shaft 212 and a first guide groove 241. The first guide shaft 212 can be disposed on the first support plate 240, and the first guide groove 241 can be disposed on the first rotating member 210. For example, the first guide shaft 212 can pass through the first guide groove 241. With the above arrangement, when the first guide shaft 212 moves along the extending direction of the first guide groove 241, the first support plate 240 and the first rotating member 210 slide relative to each other.

[0132] The second support plate 340 and the second rotating member 310 can be slidably connected by a second guide shaft 312 and a second guide groove 341. The second guide shaft 312 can be disposed on the second support plate 340, and the second guide groove 341 can be disposed on the second rotating member 310. For example, the second guide shaft 312 can pass through the second guide groove 341. With the above arrangement, when the second guide shaft 312 moves along the extending direction of the second guide groove 341, the second support plate 340 and the second rotating member 310 slide relative to each other.

[0133] In summary, during the transition between the unfolded and folded states, the first rotating mechanism 10 can change the relative positions of the first support plate 240 and the second support plate 340 to the first main shaft.

[0134] In some embodiments, the first guide shaft 212 may be fixedly connected to the first rotating member 210, or the first guide shaft 212 may also be rotatably connected to the first rotating member 210. Similarly, the second guide shaft 312 may be fixedly connected to the second rotating member 310, or the second guide shaft 312 may also be rotatably connected to the second rotating member 310.

[0135] Figure 17 for Figure 7 A cross-sectional view along the CC section line when the first rotating mechanism is in the deployed state; Figure 18 for Figure 7 A cross-sectional view along the CC section line when the first rotating mechanism is in the folded state.

[0136] In some embodiments, refer to Figure 17 When the first rotating mechanism 10 is in the unfolded state: in the second direction Y, the distance between the first end 241a of the first guide groove and the first main shaft 100 is less than the distance between the second end 241b of the first guide groove and the first main shaft 100; in the direction perpendicular to the support plane S, the distance between the first end 241a of the first guide groove and the support surface of the first support plate 240 is less than the distance between the second end 241b of the first guide groove and the support surface of the first support plate 240.

[0137] When the first rotating mechanism 10 is in the unfolded state: in the second direction Y, the distance between the first end 341a of the second guide groove and the first main shaft 100 is less than the distance between the second end 341b of the second guide groove and the first main shaft 100; in the direction perpendicular to the support plane S, the distance between the first end 341a of the second guide groove and the support surface of the second support plate 340 is less than the distance between the second end 341b of the second guide groove and the support surface of the second support plate 340.

[0138] Combination Figure 17 and Figure 18 As shown, during the process of the rotating mechanism changing from the unfolded state to the folded state, the first guide shaft 212 moves relative to the first guide groove 241 along the direction from the second end 241b of the first guide groove to the first end 241a of the first guide groove, and the second guide shaft 312 moves relative to the second guide groove along the direction from the second end 341b of the second guide groove to the first end 341a of the second guide groove.

[0139] During the transition of the rotating mechanism from the folded state to the unfolded state, the first guide shaft 212 moves relative to the first guide groove 241 in the direction from the first end 241a of the first guide groove to the second end 241b of the first guide groove, and the second guide shaft 312 moves relative to the second guide groove 341 in the direction from the first end 341a of the second guide groove to the second end 341b of the second guide groove.

[0140] like Figure 17 and Figure 18 As shown, the first guide groove 241 and the second guide groove 341 can be straight. In some examples, the shapes of the first guide groove 241 and the second guide groove 341 can also be other shapes, such as arc shapes, which are not limited in this application embodiment.

[0141] Furthermore, in some embodiments, the first guide groove 241 may be disposed on the first support plate 240, and the first guide shaft 212 may be disposed on the first support plate 240. The second guide groove 341 may be disposed on the second support plate 340, and the second guide shaft 312 may be disposed on the second support plate 340.

[0142] In other embodiments, the first support plate 240 and the first rotating member 210 can be slidably connected via a virtual axis. Similarly, the second support plate 340 and the second rotating member 310 can also be slidably connected in other ways, and this application does not limit this to any particular method.

[0143] Combination Figure 6 , Figure 15 and Figure 16 As shown, the first support plate 240 and the first fixed frame 230 are rotatably connected by an arc-shaped slider and an arc-shaped groove. For ease of distinction, the arc-shaped groove provided on the first support plate 240 or the first fixed frame 230 is referred to as the third arc-shaped groove 232, and the arc-shaped slider provided on the first support plate 240 or the first fixed frame 230 is referred to as the third arc-shaped slider 242. The first support plate 240 may include the third arc-shaped slider 242, and the first fixed frame 230 may include the third arc-shaped groove 232.

[0144] In some embodiments, the second support plate 340 and the second fixing frame 330 are rotatably connected by an arc-shaped slider and an arc-shaped groove. For ease of distinction, the arc-shaped groove provided on the second support plate 340 or the second fixing frame 330 is referred to as the fourth arc-shaped groove 332, and the arc-shaped slider provided on the second support plate 340 or the second fixing frame 330 is referred to as the fourth arc-shaped slider 342. The second support plate 340 may include the fourth arc-shaped slider 342, and the second fixing frame 330 may include the fourth arc-shaped groove 332.

[0145] With the above settings, the first rotating mechanism 10 can change the relative position of the first support plate 240 and the second support plate 340 to the main axis during the transition between the unfolded state and the folded state.

[0146] Alternatively, in some embodiments, the first support plate 240 may include a third arc-shaped groove 232, and the first fixing frame 230 may include a third arc-shaped slider 242; the second support plate 340 may include a fourth arc-shaped groove 332, and the first fixing frame 230 may include a fourth arc-shaped slider 342.

[0147] Continue to refer to Figure 6 and Figure 12In some embodiments, the first rotating shaft assembly 200 may further include a first swing arm 250, the first end 250a of which may be rotatably connected to the first main shaft 100, the rotation axis of the first swing arm 250 relative to the first main shaft 100 being parallel to the first direction X, and the second end 250b of which may be slidably connected to the first fixed frame 230 through a first slide groove 235, the extension direction of the first slide groove 235 intersecting the first direction X.

[0148] For example, the first fixing frame 230 may include a first slide groove 235, the extension direction of the first slide groove 235 may be perpendicular to the extension direction of the first fixing frame 230, and the extension direction of the first slide groove 235 may also be parallel to the support surface of the first fixing frame 230.

[0149] Correspondingly, the second end 250b of the first swing arm may include a first slider 251, which is slidably connected to the first slide groove 235. With the above configuration, the first swing arm 250 can move relative to the first fixed frame 230, and the sliding direction of the first swing arm 250 relative to the first fixed frame 230 is perpendicular to the length extension direction of the first fixed frame 230.

[0150] Similarly, the second rotating shaft assembly 300 may also include a second swing arm 350, the first end 350a of the second swing arm being rotatably connected to the first main shaft 100, the rotation axis of the second swing arm 350 relative to the first main shaft 100 being parallel to the first direction X, and the second end 350b of the second swing arm being slidably connected to the second fixed frame 330 through a second slide groove 335, the extension direction of the second slide groove 335 intersecting the first direction X.

[0151] For example, the second fixing frame 330 may include a second slide groove 335, the extension direction of the second slide groove 335 may be perpendicular to the extension direction of the second fixing frame 330, and the extension direction of the second slide groove 335 may also be parallel to the support surface of the second fixing frame 330.

[0152] Accordingly, the second end 350b of the second swing arm may include a second slider 351, which is slidably connected to the second slide groove 335. With the above configuration, the second swing arm 350 can move relative to the second fixed frame 330, and the sliding direction of the second swing arm 350 relative to the second fixed frame 330 is perpendicular to the length extension direction of the second fixed frame 330.

[0153] Figure 19 for Figure 7 A cross-sectional view along section line DD when the first rotating mechanism is in the deployed state; Figure 20 for Figure 7 A cross-sectional view along section line DD when the first rotating mechanism is in the folded state.

[0154] Reference Figure 19 and Figure 20 As shown, during the transition from the unfolded state to the folded state of the first rotating mechanism 10, the first fixed frame 230 slides away from the first main shaft 100 relative to the second end 250b of the first swing arm, and the second fixed frame 330 slides away from the first main shaft 100 relative to the second end 350b of the second swing arm. During the transition from the folded state to the unfolded state of the first rotating mechanism 10, the first fixed frame 230 slides towards the first main shaft 100 relative to the second end 250b of the first swing arm, and the second fixed frame 330 slides towards the first main shaft 100 relative to the second end 350b of the second swing arm.

[0155] The above settings facilitate the adjustment of the length between the first fixing frame 230 and the second fixing frame 330, and help ensure that the length of the flexible screen 30 covering the first structural member 21 and the second structural member 22 does not change, thereby improving the phenomenon of the first rotating mechanism 10 squeezing or stretching the flexible screen 30.

[0156] In some embodiments, the first swing arm 250 and the first support plate 240, and the second swing arm 350 and the second support plate 340, can be limited by matching arc-shaped surfaces. For example... Figure 16 As shown, the first swing arm 250 may include a first limiting block 252, which has an arc-shaped surface; the first support plate 240 may include a second limiting block 243, which also has an arc-shaped surface. The second swing arm 350 may include a third limiting block 352, which has an arc-shaped surface; and the second support plate 340 may include a fourth limiting block 343, which also has an arc-shaped surface.

[0157] When the foldable electronic device is in a folded state, the arc-shaped surface of the first limiting block 252 can contact the arc-shaped surface of the second limiting block 243, and the arc-shaped surface of the third limiting block 352 can contact the arc-shaped surface of the fourth limiting block 343. This restricts the rotation of the first support plate 240 relative to the first swing arm 250 and the second support plate 340 relative to the second swing arm 350, preventing the first and second support plates 240 from compressing the flexible screen.

[0158] Alternatively, in some embodiments, the first swing arm 250 may be slidably connected to the first support plate 240, and the second swing arm 350 may be slidably connected to the second support plate 340.

[0159] For example, the first support plate 240 and the first swing arm 250 can also be slidably connected by a rotating shaft and a strip hole. The extension direction of the rotating shaft is parallel to the first direction X. The first support plate 240 may include a strip hole. The rotating shaft is also rotatably connected to the first swing arm 250. The rotating shaft passes through the strip hole, and when the rotating shaft moves along the extension direction of the strip hole, the first support plate 240 and the first swing arm 250 slide relative to each other.

[0160] For example, in some examples, the first support plate 240 and the first swing arm 250 can also be slidably connected via a pivot and a guide groove, wherein the guide groove can be straight or curved. As another example, the first support plate 240 and the first swing arm 250 can be slidably connected via a virtual axis. The sliding connection between the second support plate 340 and the second swing arm 350 can be similar and will not be described further here.

[0161] Figure 21 Exploded view of the assembly structure of the first and second swing arms with the main shaft provided in the embodiments of this application.

[0162] Combination Figure 6 and Figure 21 As shown, the first main shaft 100 may include a plurality of first mounting shafts 190 arranged sequentially along the second direction Y, wherein the plurality of first mounting shafts 190 all extend along the first direction X. The first end 250a of the first swing arm may be sleeved on a first mounting shaft 190 so that the first end 250a of the first swing arm can be rotatably connected to the first main shaft 100, and the first end 350a of the second swing arm may be sleeved on a first mounting shaft 190 so that the first end 350a of the second swing arm can be rotatably connected to the first main shaft 100.

[0163] Based on the above structure, the first spindle 100 may further include a first elastic element 180 and a first damping slider 170. The first elastic element 180 may be disposed on the first spindle 100 along a first direction X, and the first damping slider 170 may be slidably connected to the first spindle 100, and the first damping slider 170 may slide relative to the first spindle 100 along the first direction X. For example, the first elastic element 180 may include a spring, and the number of springs may be multiple, and the multiple springs may be correspondingly sleeved on multiple first mounting shafts 190.

[0164] Multiple first mounting shafts 190 can be slidably connected to first damping sliders 170. There can be two first damping sliders 170, and these two sliders can be arranged along a first direction X. The first end of a first elastic element 180 is connected to one first damping slider 170, and the second end of the first elastic element 180 is connected to the other first damping slider 170. Alternatively, in some other embodiments, there can be only one first damping slider 170, where the first end of the first elastic element 180 can be connected to the first main shaft 100, and the second end of the first elastic element 180 can be connected to the first damping slider 170.

[0165] The first swing arm 250 and the second swing arm 350 together constitute a swing arm assembly. In an embodiment where there are two first damping sliders 170, the number of swing arm assemblies in the first rotating mechanism 10 can be two, with one swing arm assembly located on the side of a first damping slider 170 away from the first end of the first elastic member 180, and the other swing arm assembly located on the side of a first damping slider 170 away from the second end of the first elastic member 180. The first swing arm 250 in different swing arm assemblies may have structural differences, and similarly, the second swing arm 350 in different swing arm assemblies may have structural differences.

[0166] Of course, the number of swing arm assemblies is not limited in the embodiments of this application. The following description only uses one swing arm assembly and one corresponding damping slider as an example.

[0167] Furthermore, the first end 250a of the first swing arm may include a first concave-convex surface 258, the first damping slider 170 may include a third concave-convex surface 189 that cooperates with the first concave-convex surface 258, the first end 350a of the second swing arm may include a second concave-convex surface 358, and the first damping slider 170 may include a fourth concave-convex surface 188 that cooperates with the third concave-convex surface 189.

[0168] When the first rotating mechanism 10 switches between the unfolded and folded states, the first swing arm 250 rotates relative to the first main shaft 100. Since the first concave-convex surface 258 of the first swing arm 250 engages with the third concave-convex surface 189 of the first damping slider 170, the first swing arm 250 drives the first damping slider 170 to slide relative to the first main shaft 100 along the first direction X. The first damping slider 170 drives the first elastic element 180 to compress and deform. The elastic restoring force of the first elastic element 180 acts as a damping force, thus providing a damping effect when the first swing arm 250 rotates relative to the first main shaft 100.

[0169] Simultaneously, when the first rotating mechanism 10 switches between the unfolded and folded states, the second swing arm 350 rotates relative to the first main shaft 100. Since the second concave-convex surface 358 of the second swing arm 350 engages with the fourth concave-convex surface 188 of the first damping slider 170, the second swing arm 350 drives the first damping slider 170 to slide relative to the first main shaft 100 along the first direction X. The first damping slider 170 drives the first elastic element 180 to compress and deform. The elastic restoring force of the first elastic element 180 acts as a damping force, thus providing a damping effect when the second swing arm 350 rotates relative to the first main shaft 100.

[0170] In some embodiments, the first end 250a of the first swing arm may further include a first gear 259, and the first main shaft 100 may further include a third gear 199 meshing with the first gear 259. The first end 350a of the second swing arm may further include a second gear 359, and the first main shaft 100 may further include a fourth gear 198 meshing with the second gear 359. The third gear 199 also meshes with the fourth gear 198.

[0171] For example, the first gear 259, the second gear 359, the fourth gear 198 and the third gear 199 can be fitted onto the four first mounting shafts 190 of the first spindle 100.

[0172] When the first swing arm 250 rotates relative to the first main shaft 100, the first gear 259 drives the third gear 199 to rotate, which in turn drives the fourth gear 198 to rotate. The fourth gear 198 then drives the second gear 359 to rotate, causing the second swing arm 350 to rotate relative to the first main shaft 100. Through this configuration, the first swing arm 250 rotates relative to the first main shaft 100 while the second swing arm 350 rotates relative to the first main shaft 100, thus achieving synchronous movement of the first and second swing arms 250.

[0173] Of course, in some other embodiments, the first swing arm 250 and the second swing arm 350 can also achieve synchronous movement through other structures, and this application embodiment does not specifically limit this.

[0174] For example, the first spindle 100 may further include a synchronous drive slider, which is slidably connected to the first spindle 100 along a first direction X. The synchronous drive slider may be located between two through holes at the first end 250a of the first swing arm and between two through holes at the first end 350a of the second swing arm. Furthermore, the synchronous drive slider and the first swing arm 250 may each include two cooperating helical surfaces, and the synchronous drive slider and the second swing arm 350 may each include two cooperating helical surfaces.

[0175] With the above configuration, through the cooperation between the spiral surfaces, the first swing arm 250 can rotate relative to the first main shaft 100 while the second swing arm 350 rotates relative to the first main shaft 100, thereby achieving synchronous movement of the first swing arm 250 and the second swing arm 350, and further achieving synchronous movement of the first rotating shaft assembly 200 and the second rotating shaft assembly 300.

[0176] The following reference Figures 22 to 25 and combined Figures 8 to 10 The structure of the second rotating mechanism 40 will be further explained.

[0177] In some embodiments, continue to refer to Figure 8 , Figure 9 as well as Figure 10 When the folding electronic device is in the unfolded state, the third fixed frame 830, the third rotating component 810, the second main shaft 700, the fourth rotating component 910, and the fourth fixed frame 930 together constitute the support plane S of the second rotating mechanism 40.

[0178] For example, the third fixing frame 830 and the fourth fixing frame 930 may include a flat plate structure. With the above arrangement, the third fixing frame 830, the third rotating member 810, the second main shaft 700, the fourth rotating member 910, and the fourth fixing frame 930 can work together to support the flexible screen.

[0179] When the foldable electronic device is in a folded state, the support surface of the third fixing frame 830 is parallel to the support surface of the fourth fixing frame 930, and both the support surfaces of the third fixing frame 830 and the fourth fixing frame 930 are perpendicular to the third direction Z.

[0180] For example, in the direction near the second main shaft 700, the distance between the support surfaces of the third fixing frame 830 and the fourth fixing frame 930 along the third direction Z remains unchanged. For example, the flexible screen can be bent into a U-shape within the second accommodating space P2 jointly enclosed by the third fixing frame 830, the third rotating member 810, the second main shaft 700, the fourth rotating member 910, and the fourth fixing frame 930. This arrangement helps to increase the volume of the second accommodating space P2, avoids excessive compression of the flexible screen, thereby reducing the stress on the flexible screen and improving its reliability.

[0181] Figure 22 An exploded view of the structure of a second spindle 700 provided in an embodiment of this application.

[0182] Reference Figure 22In some embodiments, the second main shaft 700 may include a second main outer shaft 710 and a second main inner shaft, wherein the second main inner shaft and the second main outer shaft 710 are stacked, and the second main inner shaft is located between the flexible screen 30 and the second main outer shaft 710. The second main inner shaft is used to support the flexible screen 30. The second main inner shaft includes a third shaft portion 721 and a fourth shaft portion 722 stacked, and the fourth shaft portion 722 is located between the third shaft portion 721 and the second main outer shaft 710.

[0183] The third shaft portion 721 and the fourth shaft portion 722 together form a fifth arc-shaped slide groove 701 and a sixth arc-shaped slide groove 702. The fifth arc-shaped slide groove 701 and the sixth arc-shaped slide groove 702 can be arranged at intervals along the second direction Y, and the central axis of the fifth arc-shaped slide groove 701 and the central axis of the sixth arc-shaped slide groove 702 are both parallel to the first direction X.

[0184] Figure 23 An exploded view of the assembly structure of a third rotating member 810 and a fourth rotating member 910 with other components provided in an embodiment of this application.

[0185] Correspondingly, combined Figure 23 and Figure 9 As shown, the first end 810a of the third rotating member may include a fifth arc-shaped slider 811, which is slidably connected to a fifth arc-shaped groove 701, so that the first end 810a of the third rotating member and the second main shaft 700 can be rotatably connected through a virtual axis connection. The first end 910a of the fourth rotating member may include a sixth arc-shaped slider 911, which is slidably connected to a sixth arc-shaped groove 702, so that the first end 910a of the fourth rotating member and the second main shaft 700 can be rotatably connected through a virtual axis connection. Through the above arrangement, the rotation axis of the third rotating member 810 relative to the second main shaft 700 and the rotation axis of the fourth rotating member 910 relative to the second main shaft 700 are both parallel to the first direction X and do not coincide.

[0186] Figure 24 for Figure 10 A cross-sectional view along section line KK when the second rotating mechanism 40 is in the unfolded state; Figure 25 for Figure 10 A cross-sectional view along section line KK when the second rotating mechanism 40 is in the folded state.

[0187] Reference Figure 24 and Figure 25As the second rotating mechanism 40 transitions from a folded state to an unfolded state, the portion of the fifth arc-shaped slider 811 located in the fifth arc-shaped groove 701 gradually increases, and the portion of the sixth arc-shaped slider 911 located in the sixth arc-shaped groove 702 gradually increases. Conversely, as the second rotating mechanism 40 transitions from an unfolded state to a folded state, the portion of the fifth arc-shaped slider 811 located in the fifth arc-shaped groove 701 gradually decreases, and the portion of the sixth arc-shaped slider 911 located in the sixth arc-shaped groove 702 gradually decreases.

[0188] In addition, in some embodiments, the third rotating member 810 may also include a fifth arc-shaped slide groove 701, and the second main shaft 700 may include a fifth arc-shaped slider 811; the fourth rotating member 910 may also include a sixth arc-shaped slide groove 702, and the second main shaft 700 may include a sixth arc-shaped slider 911.

[0189] Of course, the third rotating member 810 and the second main shaft 700 can also be rotatably connected through other virtual axis connection methods, and the fourth rotating member 910 and the second main shaft 700 can also be rotatably connected through other virtual axis connection methods. This application embodiment does not limit this.

[0190] Combination Figure 23 , Figure 24 as well as Figure 25 As shown, the third fixing frame 830 may include a first receiving groove 836, the groove wall of which may be provided with a through hole. Correspondingly, the second end 810b of the third rotating member may be disposed within the first receiving groove 836, and the second end 810b of the third rotating member may be provided with a through hole. The third shaft 840 may be disposed within the through hole of the first receiving groove 836 and the through hole of the third rotating member 810, so that the third rotating member 810 and the third fixing frame 830 are rotatably connected.

[0191] Similarly, the fourth fixing frame 930 may include a second receiving groove 936, the wall of which may be provided with a through hole. Correspondingly, the second end 910b of the fourth rotating member may be disposed within the second receiving groove 936, and the second end 910b of the fourth rotating member may be provided with a through hole. The fourth shaft 940 may be disposed within the through hole of the second receiving groove 936 and the through hole of the fourth rotating member 910, so that the fourth rotating member 910 and the fourth fixing frame 930 are rotatably connected.

[0192] In addition, combined Figure 24As shown, when the second rotating mechanism 40 is in the deployed state, the portion of the third rotating member 810 located in the first receiving groove 836 is coplanar with the third fixed frame 830, and the portion of the fourth rotating member 910 located in the second receiving groove 936 is coplanar with the fourth fixed frame 930. This arrangement facilitates the joint support of the flexible screen by the third fixed frame 830, the third rotating member 810, the fourth rotating member 910, and the fourth fixed frame 930.

[0193] Continue to refer to Figure 8 and Figure 9 The third rotating shaft assembly 800 may further include a third swing arm 820, with a first end 820a rotatably connected to the second main shaft 700 and a second end 820b slidably connected to the third fixed frame 830. The fourth rotating shaft assembly 900 includes a fourth swing arm 920, with a first end 920a rotatably connected to the second main shaft 700 and a second end 920b slidably connected to the fourth fixed frame 930.

[0194] Figure 26 This is an exploded view of the assembly structure of a third swing arm 820 and a third fixed frame 830, and a fourth swing arm 920 and a fourth fixed frame 930, provided as an embodiment of this application, from another perspective. This perspective can be the viewpoint observed from the direction of the main axis towards the flexible screen.

[0195] Reference Figure 26 As shown, the second end 820b of the third swing arm is also slidably connected to the third fixed frame 830 through the third slide groove 835. The second end 820b of the third swing arm can slide relative to the third fixed frame 830 along the extension direction of the third slide groove 835. The extension direction of the third slide groove 835 intersects with the first direction X.

[0196] The third fixing frame 830 may include a third slide groove 835. For example, the extension direction of the third slide groove 835 may be perpendicular to the extension direction of the third fixing frame 830, and the extension direction of the third slide groove 835 may also be parallel to the support surface of the third fixing frame 830. Of course, the extension direction of the third slide groove 835 may also be other directions, and this embodiment does not limit this.

[0197] Correspondingly, the second end 820b of the third swing arm may include a third slider 825, which is slidably connected to the third slide groove 835. With the above configuration, the third swing arm 820 can move relative to the third fixed frame 830, and the sliding direction of the third swing arm 820 relative to the third fixed frame 830 is perpendicular to the length extension direction of the third fixed frame 830.

[0198] In some embodiments, at least a portion of the third fixing frame 830 may be located between the third swing arm 820 and the flexible screen. For example, the third slide groove 835 may be disposed on the side of the third fixing frame 830 facing away from the flexible screen, so that the second end 820b of the third swing arm can be located on the side of the third fixing frame 830 facing away from the flexible screen. This arrangement avoids interference between the third swing arm 820 and the flexible screen when the third fixing frame 830 moves relative to it. It also improves the assembly compactness between the third swing arm 820 and the third fixing frame 830, reducing the size of the second rotating mechanism 40.

[0199] Similarly, the second end 920b of the fourth swing arm and the fourth fixed frame 930 can be slidably connected through the fourth slide groove 935. The second end 920b of the fourth swing arm can slide relative to the fourth fixed frame 930 along the extension direction of the fourth slide groove 935. The extension direction of the fourth slide groove 935 intersects with the first direction X.

[0200] The fourth fixing frame 930 may include a fourth sliding groove 935. For example, the extending direction of the fourth sliding groove 935 may be perpendicular to the extending direction of the fourth fixing frame 930, and the extending direction of the fourth sliding groove 935 may also be parallel to the supporting surface of the fourth fixing frame 930. Of course, the extending direction of the fourth sliding groove 935 may also be other directions, and this embodiment does not limit this.

[0201] Accordingly, the second end 920b of the fourth swing arm may include a fourth slider 925, which is slidably connected to the fourth slide groove 935. With the above configuration, the fourth swing arm 920 can move relative to the fourth fixed frame 930, and the sliding direction of the fourth swing arm 920 relative to the fourth fixed frame 930 is perpendicular to the length extension direction of the fourth fixed frame 930.

[0202] In some embodiments, at least a portion of the fourth fixing frame 930 may be located between the fourth swing arm 920 and the flexible screen. For example, the fourth slide groove 935 may be disposed on the side of the fourth fixing frame 930 facing away from the flexible screen, so that the second end 920b of the fourth swing arm can be located on the side of the fourth fixing frame 930 facing away from the flexible screen. This arrangement avoids interference between the fourth swing arm 920 and the flexible screen when the fourth fixing frame 930 moves relative to it. It also improves the assembly compactness between the fourth swing arm 920 and the fourth fixing frame 930, reducing the size of the second rotating mechanism 40.

[0203] Figure 27 for Figure 10 A cross-sectional view along the RR section line when the second rotating mechanism 40 is in the unfolded state; Figure 28 for Figure 10 A cross-sectional view along the RR section line when the second rotating mechanism 40 is in the folded state.

[0204] Combination Figure 27 and Figure 28 As shown, during the transition from the unfolded state to the folded state of the second rotating mechanism 40, the third fixed frame 830 slides away from the second main shaft 700 relative to the second end 820b of the third swing arm, and the fourth fixed frame 930 slides away from the second main shaft 700 relative to the second end 920b of the fourth swing arm. During the transition from the folded state to the unfolded state of the second rotating mechanism 40, the third fixed frame 830 slides closer to the second main shaft 700 relative to the second end 820b of the third swing arm, and the fourth fixed frame 930 slides closer to the second main shaft 700 relative to the second end 920b of the fourth swing arm.

[0205] The above settings facilitate the adjustment of the length between the third fixing frame 830 and the fourth fixing frame 930, ensure that the length of the flexible screen covering the second and third structural components remains unchanged, and improve the phenomenon of the second rotating mechanism 40 squeezing or stretching the flexible screen.

[0206] Figure 29 Exploded view of the assembly structure of the third swing arm 820 and the fourth swing arm 920 with the second main shaft 700, as provided in the embodiments of this application.

[0207] Reference Figure 29 As shown, the second main shaft 700 may include a plurality of second mounting shafts 760 arranged sequentially along a second direction, wherein the plurality of second mounting shafts 760 extend along a first direction X. The first end 820a of the third swing arm may be sleeved on a second mounting shaft 760 so that the first end 820a of the third swing arm can be rotatably connected to the third main shaft, and the first end 920a of the fourth swing arm may be sleeved on a second mounting shaft 760 so that the first end 92a of the fourth swing arm can be rotatably connected to the second main shaft 700.

[0208] Based on the above structure, the second spindle 700 may further include a second elastic element 770 and a second damping slider 780. The second elastic element 770 may be disposed on the second spindle 700 along the first direction X, and the second damping slider 780 may be slidably connected to the second spindle 700, and may slide relative to the second spindle 700 along the first direction X. For example, the second elastic element 770 may include a spring, and the number of springs may be multiple, with each spring correspondingly sleeved on a multiple second mounting shaft 760.

[0209] Multiple second mounting shafts 760 can be slidably connected to the second damping sliders 780. There can be multiple second damping sliders 780, and these sliders can be arranged at intervals along a first direction X. The first end of the second elastic element 770 is connected to one second damping slider 780, and the second end of the second elastic element 770 is connected to another second damping slider 780. Alternatively, in some other embodiments, there can be only one second damping slider 780, where the first end of the second elastic element 770 can be connected to the second main shaft 700, and the second end of the second elastic element 770 can be connected to the second damping slider 780.

[0210] The third swing arm 820 and the fourth swing arm 920 together constitute a swing arm assembly. In embodiments where there are multiple second damping sliders 780, the second rotating mechanism 40 can have two swing arm assemblies. One swing arm assembly is located on the side of a second damping slider 780 opposite to the first end of the second elastic member 770, and the other swing arm assembly is located on the side of a second damping slider 780 opposite to the second end of the second elastic member 770. The third swing arm 820 in different swing arm assemblies may have structural differences, and similarly, the fourth swing arm 920 in different swing arm assemblies may have structural differences.

[0211] Of course, the number of swing arm assemblies is not limited in the embodiments of this application. The following description only uses one swing arm assembly and one corresponding damping slider as an example.

[0212] Furthermore, the first end 820a of the third swing arm may include a fifth concave-convex surface 822, the second damping slider 780 may include a seventh concave-convex surface 789 that cooperates with the fifth concave-convex surface 822, the first end 920a of the fourth swing arm may include a sixth concave-convex surface 922, and the second damping slider 780 may include a seventh concave-convex surface 789 that cooperates with the seventh concave-convex surface 789.

[0213] For example, the second elastic element 770 contacts the first end of the second damping slider 780, and the seventh concave-convex surface 789 can be located at the second end of the second damping slider 780.

[0214] When the second rotating mechanism 40 switches between the unfolded and folded states, the third swing arm 820 rotates relative to the second main shaft 700. Since the fifth concave-convex surface 822 of the third swing arm 820 engages with the seventh concave-convex surface 789 of the second damping slider 780, the third swing arm 820 drives the second damping slider 780 to slide relative to the second main shaft 700 along the first direction X. The second damping slider 780 drives the second elastic element 770 to compress and deform. The elastic restoring force of the second elastic element 770 acts as a damping force, thus providing a damping effect when the third swing arm 820 rotates relative to the second main shaft 700.

[0215] Simultaneously, when the second rotating mechanism 40 switches between the unfolded and folded states, the fourth swing arm 920 rotates relative to the second main shaft 700. Since the sixth concave-convex surface 922 of the fourth swing arm 920 engages with the eighth concave-convex surface 788 of the second damping slider 780, the fourth swing arm 920 drives the second damping slider 780 to slide relative to the second main shaft 700 along the first direction X. The second damping slider 780 drives the second elastic element 770 to compress and deform. The elastic restoring force of the second elastic element 770 acts as a damping force, thus providing a damping effect when the fourth swing arm 920 rotates relative to the second main shaft 700.

[0216] In some embodiments, the second spindle 700 may further include a synchronization slider 790, which is slidably connected to the second spindle 700 along a first direction. The synchronization slider 790 may be located between two through holes at the first end 820a of the third swing arm and between two through holes at the first end 920a of the fourth swing arm.

[0217] The first end 820a of the third swing arm may include a first helical surface 823, the synchronous slider 790 may include a third helical surface 791 that cooperates with the first helical surface 823, the first end 920a of the fourth swing arm may include a second helical surface 923, and the synchronous slider 790 may include a fourth helical surface 792 that cooperates with the second helical surface 923.

[0218] With the above configuration, when the third swing arm 820 rotates relative to the second main shaft 700, the synchronous slider 790 slides relative to the second main shaft 700, thereby driving the fourth swing arm 920 to rotate relative to the second main shaft 700. Through the cooperation between the helical surfaces, the synchronous movement of the third swing arm 820 and the fourth swing arm 920 is achieved, which in turn achieves the synchronous movement of the third rotating shaft assembly 800 and the fourth rotating shaft assembly 900.

[0219] Of course, in some other embodiments, the third swing arm 820 and the fourth swing arm 920 can also achieve synchronous movement through other structures, and this application embodiment does not specifically limit this.

[0220] In some embodiments, the first end 820a of the third swing arm may further include a fifth gear, the first end 920a of the fourth swing arm may further include a sixth gear, the second main shaft 700 may further include a seventh gear meshing with the fifth gear, and the second main shaft 700 may further include an eighth gear meshing with the sixth gear. The seventh gear also meshes with the eighth gear.

[0221] Through the coordination of the four gears, the third swing arm 820 can rotate relative to the second main shaft 700 while the fourth swing arm 920 rotates relative to the second main shaft 700, thus achieving synchronous movement of the third swing arm 820 and the fourth swing arm 920.

[0222] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A foldable electronic device, characterized in that, include: Flexible screen (30); The first structural component (21), the second structural component (22), and the third structural component (23) are located on the same side of the flexible screen (30); A first rotating mechanism (10) includes a first rotating shaft assembly (200), a first main shaft (100), and a second rotating shaft assembly (300), wherein the first main shaft (100) extends along a first direction (X); wherein, The first rotating shaft assembly (200) includes a first rotating member (210) and a first fixed frame (230). The first end (210a) of the first rotating member is rotatably connected to the first main shaft (100), and the second end (210b) of the first rotating member is connected to the first fixed frame (230) via... The first shaft (220) is rotatably connected, and the first fixing frame (230) is fixedly connected to the first structural member (21); The second rotating shaft assembly (300) includes a second rotating member (310) and a second fixed frame (330). The first end (310a) of the second rotating member is rotatably connected to the first main shaft (100), and the second end (310b) of the second rotating member is rotatably connected to the second fixed frame (330) through a second shaft (320). The second fixed frame (330) is fixedly connected to the second structural member (22). The second rotating mechanism (40) includes a third rotating shaft assembly (800), a second main shaft (700), and a fourth rotating shaft assembly (900), wherein the second main shaft (700) extends along the first direction (X); wherein, The third rotating shaft assembly (800) includes a third rotating component (810) and a third fixed frame (830). The first end (810a) of the third rotating component is rotatably connected to the second main shaft (700), the second end (810b) of the third rotating component is rotatably connected to the second structural component (23) through a third shaft (840), and the third fixed frame (830) is fixedly connected to the second structural component (22). The fourth rotating shaft assembly (900) includes a fourth rotating member (910) and a fourth fixed frame (930). The first end (910a) of the fourth rotating member is rotatably connected to the second main shaft (700), the second end (910b) of the fourth rotating member is rotatably connected to the third structural member (23) through a fourth shaft (940), and the fourth fixed frame (930) is fixedly connected to the third structural member (23). When the foldable electronic device (1) is in the unfolded state, the third structural member (23), the second structural member (22) and the first structural member (21) are arranged in sequence along the second direction (Y), the second direction (Y) is perpendicular to the first direction (X), and the first structural member (21), the first rotating mechanism (10), the second structural member (22), the second rotating mechanism 40 (40) and the third structural member (23) together constitute a support plane (S) for supporting the flexible screen (30); When the foldable electronic device (1) is in a folded state, the first structural member (21), the second structural member (22) and the third structural member (23) are stacked along a third direction (Z), which is perpendicular to the first direction (X) and the second direction (Y).

2. The foldable electronic device (1) according to claim 1, characterized in that, When the foldable electronic device (1) is in a folded state: The first structural member (21) is located between the second structural member (22) and the third structural member (23). The first rotating mechanism (10) encloses a first accommodating space (P1). A portion of the flexible screen (30) is located within the first accommodating space (P1). The second rotating mechanism 40 (40) encloses a second accommodating space (P2). A portion of the flexible screen (30) and a portion of the first structural member (21) are located within the second accommodating space (P2).

3. The folding electronic device (1) according to claim 1 or 2, characterized in that, The first rotating shaft assembly (200) includes a first support plate (240), which is slidably connected to the first rotating member (210) and rotatably connected to the first fixing frame (230). The second rotating shaft assembly (300) includes a second support plate (340), which is slidably connected to the second rotating member (310) and rotatably connected to the second fixing frame (330); When the folding electronic device (1) is in the unfolded state, the first fixing frame (230), the first support plate (240), the first main shaft (100), the second support plate (340) and the second fixing frame (330) together constitute the support plane (S) of the first rotating mechanism (10), and the first end (340a) of the second support plate, the second end (340b) of the second support plate, the second end (240b) of the first support plate and the first end (240a) of the first support plate are arranged sequentially along the second direction (Y); When the foldable electronic device (1) is in a folded state, the distance between the first end (240a) of the first support plate and the first end (340a) of the second support plate in the third direction (Z) is less than the distance between the second end (240b) of the first support plate and the second end (240b) of the first support plate in the third direction (Z).

4. The foldable electronic device (1) according to claim 3, characterized in that, The first support plate (240) and the first rotating member (210) are slidably connected by a first guide shaft (212) and a first guide groove (241). The first guide shaft (212) is disposed on the first support plate (240) and the first guide groove (241) is disposed on the first rotating member (210), or the first guide groove (241) is disposed on the first support plate (240) and the first guide shaft (212) is disposed on the first support plate (240). The second support plate (340) and the second rotating member (310) are slidably connected by the second guide shaft (312) and the second guide groove (341). The second guide shaft (312) is disposed on the second support plate (340) and the second guide groove (341) is disposed on the second rotating member (310). Alternatively, the second guide groove (341) is disposed on the second support plate (340) and the second guide shaft (312) is disposed on the second support plate (340).

5. The folding electronic device (1) according to claim 3 or 4, characterized in that, The first support plate (240) and the first fixing frame (230) are rotatably connected by an arc-shaped slider and an arc-shaped groove. The first support plate (240) includes an arc-shaped slider, and the first fixing frame (230) includes an arc-shaped groove. Alternatively, the first support plate (240) includes an arc-shaped groove, and the first fixing frame (230) includes an arc-shaped slider. The second support plate (340) and the first fixing frame (230) are rotatably connected by an arc-shaped slider and an arc-shaped groove. The second support plate (340) includes an arc-shaped slider, and the first fixing frame (230) includes an arc-shaped groove. Alternatively, the second support plate (340) includes an arc-shaped groove, and the first fixing frame (230) includes an arc-shaped slider.

6. The foldable electronic device (1) according to any one of claims 1-5, characterized in that, The first rotating shaft assembly (200) includes a first swing arm (250), the first end (250a) of the first swing arm is rotatably connected to the first main shaft (100), and the second end (250b) of the first swing arm is also slidably connected to the first fixed frame (230) through a first slide groove (235). The second end (250b) of the first swing arm can slide relative to the first fixed frame (230) along the extension direction of the first slide groove (235), and the extension direction of the first slide groove (235) intersects with the first direction (X). The second rotating shaft assembly (300) includes a second swing arm (350), the first end (350a) of the second swing arm is rotatably connected to the second main shaft 700 (700), and the second end (350b) of the second swing arm is also slidably connected to the second fixed frame (330) through a second slide groove (335). The second end (350b) of the second swing arm can slide relative to the second fixed frame (330) along the extension direction of the second slide groove (335), and the extension direction of the second slide groove (335) intersects with the first direction (X).

7. The foldable electronic device (1) according to claim 6, characterized in that, The first end (250a) of the first swing arm includes a first concave-convex surface (258), and the first end (350a) of the second swing arm includes a second concave-convex surface (358). The first rotating mechanism (10) further includes a first damping slider (170) and a first elastic element (180). The first elastic element (180) is disposed on the first main shaft (100) along the first direction (X). The first damping slider (170) is slidably connected to the first main shaft (100). The first damping slider (170) can slide relative to the first main shaft (100) along the first direction (X). The first end of the first damping slider (170) contacts the first elastic element (180). The second end of the first damping slider (170) includes a third concave-convex surface (189) that cooperates with the first concave-convex surface (258) and a fourth concave-convex surface (188) that cooperates with the second concave-convex surface (358).

8. The folding electronic device (1) according to claim 6 or 7, characterized in that, The first end (250a) of the first swing arm also includes a first gear (259), and the second end (350b) of the second swing arm also includes a second gear (359); The first rotating mechanism (10) further includes a third gear (199) and a fourth gear (198) that mesh with each other. The third gear (199) and the fourth gear (198) are both disposed on the first main shaft (100). The third gear (199) meshes with the first gear (259), and the fourth gear (198) meshes with the second gear (359).

9. The folding electronic device (1) according to any one of claims 1-8, characterized in that, When the folding electronic device (1) is in a flat state, the third fixing frame (830), the third rotating component (810), the second main shaft (700), the fourth rotating component (910) and the fourth fixing frame (930) together constitute the support plane of the second rotating mechanism (40); When the foldable electronic device (1) is in a folded state, the support surface of the third fixing frame (830) is parallel to the support surface of the fourth fixing frame 930, and both the support surface of the third fixing frame 830 and the support surface of the fourth fixing frame 930 are perpendicular to the third direction.

10. The folding electronic device (1) according to any one of claims 1-9, characterized in that, The third rotating shaft assembly (800) includes a third swing arm (820), the first end (820a) of the third swing arm is rotatably connected to the second main shaft (700), and the second end (820b) of the third swing arm is also slidably connected to the third fixed frame (830) through a third slide groove (835). The second end (820b) of the third swing arm can slide relative to the third fixed frame (830) along the extension direction of the third slide groove (835), and the extension direction of the third slide groove (835) intersects with the first direction (X). The fourth rotating shaft assembly (900) includes a fourth swing arm (920). The first end (920a) of the fourth swing arm is rotatably connected to the second main shaft (700). The second end (920b) of the fourth swing arm is also slidably connected to the fourth fixed frame (930) through a fourth slide groove (935). The second end (920b) of the fourth swing arm can slide relative to the fourth fixed frame (930) along the extension direction of the fourth slide groove (935). The extension direction of the fourth slide groove (935) intersects with the first direction (X).

11. The foldable electronic device (1) according to claim 10, characterized in that, At least a portion of the third fixing frame (830) is located between the third swing arm (820) and the flexible screen (30), and at least a portion of the fourth fixing frame (930) is located between the fourth swing arm (920) and the flexible screen (30).

12. The folding electronic device (1) according to claim 10 or 11, characterized in that, The first end (820a) of the third swing arm includes a fifth concave-convex surface (822), and the first end (920a) of the fourth swing arm includes a sixth concave-convex surface (922). The second rotating mechanism (40) further includes a second damping slider (780) and a second elastic element (770). The second elastic element (770) is disposed on the second main shaft (700) along the first direction (X). The second damping slider (780) is slidably connected to the second main shaft (700). The second damping slider (780) can slide relative to the second main shaft (700) along the first direction (X). The first end of the second damping slider (780) contacts the second elastic element (770). The second end of the second damping slider (780) includes a seventh concave-convex surface (789) that cooperates with the fifth concave-convex surface (822) and an eighth concave-convex surface (788) that cooperates with the sixth concave-convex surface (922).

13. The folding electronic device (1) according to any one of claims 10-12, characterized in that, The first end (820a) of the third swing arm includes a first helical surface (823), and the first end (920a) of the fourth swing arm includes a second helical surface (923); The second rotating mechanism (40) further includes a synchronous slider (790), which is slidably connected to the second main shaft (700). The synchronous slider (790) can slide relative to the second main shaft (700) along the first direction (X). The synchronous slider (790) includes a third helical surface (791) that cooperates with the first helical surface (823) and a fourth helical surface (792) that cooperates with the second helical surface (923).

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