Electronic device

Abstract

The present application provides an electronic device, comprising first and second housings and a rotating mechanism, wherein the rotating mechanism comprises a middle beam, first and second rotating portions, and a panel assembly; one end of the first rotating portion is rotatably connected to the middle beam, and the other end of the first rotating portion extends into the first housing and is connected to the first housing; one end of the second rotating portion is rotatably connected to the middle beam, and the other end of the second rotating portion extends into the second housing and is connected to the second housing; the panel assembly comprises a middle panel, a first panel and a second panel; the middle panel is connected to the middle beam; the first panel is fixedly connected to the first rotating portion and slidably connected to the first housing, and the end of the first panel away from the middle panel is located in the first housing; the second panel is fixedly connected to the second rotating portion and slidably connected to the second housing, and the end of the second panel away from the middle panel is located in the second housing; when the first housing and the second housing are unfolded relative to each other, at least part of the middle panel is arranged in the same layer as a first rear cover of the first housing and a second rear cover of the second housing. The technical solution of the present application can increase the strength of the middle beam.

Description

electronic devices

[0001] This application claims priority to Chinese Patent Application No. 202410784056.4, filed on June 18, 2024, entitled "Electronic Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of electronic equipment technology, and more particularly to an electronic device. Background Technology

[0003] As flexible foldable screen technology matures, the application of foldable terminal products (such as foldable phones, foldable tablets, and foldable computers) is becoming increasingly widespread. In foldable terminal products, the central beam in the hinge is the most important load-bearing component. All the swing arms in the hinge are connected to the central beam through kinematic pairs, and even synchronization and damping mechanisms may be located within the central beam. Therefore, the strength and rigidity of the central beam directly affect the reliability of the entire hinge and even the entire device, as well as the user experience. The hinge typically includes the central beam and a middle decorative panel fixed to it. Therefore, the thickness dimension T1 of the central beam is calculated as follows: overall device thickness T0 - screen module thickness T2 - battery cover thickness T3 - middle decorative panel thickness T4. The thickness of the battery cover and the middle decorative panel is limited by materials and manufacturing processes, making further reduction difficult. Therefore, with the trend towards thinner and lighter foldable devices, the thickness dimension of the central beam is decreasing, leading to a decline in its strength and rigidity, making it difficult to meet the reliability requirements of the entire hinge. Summary of the Invention

[0004] An embodiment of this application provides an electronic device that can increase the strength and rigidity of the central beam and meet the reliability requirements of the entire shaft.

[0005] This application provides an electronic device, which includes a first housing, a second housing, and a rotating mechanism. The first housing includes a first rear cover, the second housing includes a second rear cover, and the rotating mechanism includes a central beam, a first rotating part, a second rotating part, and a door panel assembly.

[0006] The first rotating part and the second rotating part are respectively located on both sides of the width direction of the middle beam. The first rotating part is rotatably connected to the middle beam, and the end of the first rotating part away from the middle beam extends into the first housing and is fixedly connected to the first housing. The second rotating part is rotatably connected to the middle beam, and the end of the second rotating part away from the middle beam extends into the second housing and is fixedly connected to the second housing.

[0007] The door panel assembly includes a middle door panel, a first door panel, and a second door panel. The middle door panel is fixedly connected to the central beam. The first door panel is fixedly connected to the first rotating part. One end of the first door panel away from the middle door panel is located inside the first housing. The first door panel is also slidably connected to the first housing. The second door panel is fixedly connected to the second rotating part. One end of the second door panel away from the middle door panel is located inside the second housing. The second door panel is also slidably connected to the second housing.

[0008] When the first housing and the second housing are unfolded relative to each other, at least part of the middle door panel is disposed in the same layer as the first rear cover and the second rear cover.

[0009] Understandably, in related technologies, the center beam in the hinge is the most important load-bearing component. All the swing arms in the hinge are connected to the center beam via kinematic pairs, and even synchronization and damping mechanisms may be located within it. Therefore, the strength and rigidity of the center beam directly affect the reliability of the entire hinge and even the entire device, as well as the user experience. The hinge typically includes the center beam and a central decorative panel fixed to it. Therefore, the thickness dimension T1 of the center beam = (thickness of the flattened device T0) - (thickness of the screen module T2) - (thickness of the battery cover T3) - (thickness of the central decorative panel T4). The thickness of the battery cover and the central decorative panel is limited by materials and manufacturing processes, making further reduction difficult. Therefore, with the trend towards thinner and lighter folding phones, the thickness dimension of the center beam is decreasing, leading to a decline in its strength and rigidity, making it difficult to meet the reliability requirements of the hinge and even the entire device.

[0010] Based on this, in the embodiments of this application, when the whole machine is in the unfolded state, by making at least a portion of the middle door panel co-layered with the rear covers of the left and right shells, the middle door panel can be positioned with a small or no distance difference from the rear covers of the left and right shells in the thickness direction of the whole machine, thereby allowing the middle door panel to be positioned closer to the rear covers of the left and right shells. When the whole machine is in the flattened state, making the middle door panel closer to the rear covers of the left and right shells can raise the position of the middle door panel to the same height as the rear covers of the left and right shells or with a small height difference. Thus, in the thickness configuration of the whole machine, the thickness dimension T1 of the middle beam is adjusted from the flattened thickness T0 of the whole machine to the screen module thickness T2 to the battery cover thickness T3 (i.e., the thickness of the first rear cover and / or the second rear cover) to the middle decorative door panel thickness T4 (i.e., the thickness of the middle door panel), so that the thickness dimension T1 of the middle beam is the flattened thickness T0 of the whole machine to the screen module thickness T2 to the middle decorative door panel thickness T4 (i.e., the thickness of the middle door panel).

[0011] On the one hand, based on the aforementioned dimensional formula, with the overall flattened thickness T0, screen module thickness T2, and middle decorative door panel thickness T4 remaining constant or changing only slightly, the thickness dimension T1 of the center beam can be increased by the thickness of a battery cover T3. This allows for more space to be allocated to the center beam in the thickness direction of the entire machine, significantly increasing its cross-sectional area. As the cross-sectional area of ​​the center beam increases, not only are its strength and rigidity enhanced, but the various structures connected to it via kinematic pairs are also strengthened to varying degrees. This results in a comprehensive enhancement of the rotating mechanism, meeting the overall shaft reliability requirements. For example, using the above design scheme, under the same design constraints, the cross-sectional area of ​​the center beam in the thickness direction can be increased by approximately 34%.

[0012] On the other hand, based on the aforementioned dimensional formula, with the thickness T1 of the central beam, the screen module thickness T2, and the thickness T4 of the middle decorative panel remaining constant or changing only slightly, it is possible to support a reduction in the overall thickness T0 in the flattened state by at least one battery cover thickness T3, and a reduction in the overall thickness in the folded state by at least two battery cover thicknesses T3. In other words, while maintaining the strength and stiffness of the central beam in a conventional design, the solution of this application's embodiment can support thickness reduction in both the flattened and folded states of the device, thereby achieving a thinner and lighter electronic device. For example, if the battery cover thickness is A mm, this solution can support a thickness reduction of A mm in the flattened state and a thickness reduction of 2A mm in the folded state.

[0013] In one possible implementation, the first back cover includes a first surface, the second back cover includes a second surface, and the surface of the middle door panel facing away from the central beam is the middle appearance surface of the middle door panel;

[0014] When the first housing and the second housing are unfolded relative to each other, the intermediate exterior surface is flush with the first surface and / or the second surface.

[0015] It is understandable that when the electronic device is in the unfolded state, aligning the middle outer surface of the middle door panel with the first surface of the first rear cover and the second surface of the second rear cover allows the middle door panel to be lifted away from the screen. This changes the position of the middle door panel, shifting it from having a certain distance from the first and second rear covers in the thickness direction of the device to having no or a small distance difference with them in the thickness direction, essentially placing it roughly on the same layer as the first and second rear covers. Based on the connection between the middle door panel and the central beam, the end of the central beam that contacts the middle door panel can also be lifted away from the screen along with the middle door panel. Therefore, while maintaining the same thickness in the unfolded state, the increase in the thickness direction of the central beam is maximized, resulting in the greatest enhancement. This further increases the cross-sectional area of ​​the central beam in the thickness direction, which not only improves the strength and rigidity of the central beam, enhancing the overall reliability of the device, but also improves the aesthetics of the electronic device and the user experience.

[0016] In one possible implementation, the first back cover further includes a third surface, which is disposed opposite to the first surface in the thickness direction of the first back cover.

[0017] The second rear cover also includes a fourth surface, which is disposed opposite to the second surface in the thickness direction of the second rear cover;

[0018] The surface of the central beam facing the middle door panel is flush with the third surface and / or the fourth surface.

[0019] Understandably, by aligning the surface of the center beam facing the middle door panel with the third surface of the first rear cover and / or the fourth surface of the second rear cover, the middle door panel connected to the center beam can be completely integrated with the first and / or second rear covers at the same layer. Furthermore, the center beam can extend from the screen side of the electronic device to the rear cover side in its thickness direction, thereby further increasing the cross-sectional dimensions of the center beam along its thickness. Due to the increased thickness of the center beam, its strength and stiffness are enhanced, effectively improving its reliability.

[0020] In one possible implementation, the sliding direction of the first door panel relative to the first housing is inclined to the first surface.

[0021] Understandably, since the first door panel is fixedly connected to the first swing arm, when the first swing arm slides relative to the first fixed frame, it will cause the first door panel to slide relative to the first housing, thus keeping the first door panel and the first swing arm linked together. By setting the sliding direction of the first door panel relative to the first housing at an angle to the first surface of the first rear cover, the sliding direction of the first door panel relative to the first housing can be kept consistent with the sliding direction of the first swing arm relative to the first fixed frame during the folding and unfolding of the rotating mechanism. That is, when the first swing arm slides along an oblique line relative to the first surface of the first housing, the first door panel also slides along an oblique line relative to the first surface of the first housing, thereby optimizing the movement trajectory of the first door panel and avoiding interference with the first rear cover.

[0022] The sliding direction of the second door panel relative to the second housing is inclined to the second surface.

[0023] Understandably, since the second door panel is fixedly connected to the second swing arm, when the second swing arm slides relative to the second fixed frame, it will cause the second door panel to slide relative to the second housing, thus keeping the second door panel and the second swing arm linked. By setting the sliding direction of the second door panel relative to the second housing at an angle to the second surface of the second rear cover, the sliding direction of the second door panel relative to the second housing can be kept consistent with the sliding direction of the second swing arm relative to the second fixed frame during the folding and unfolding of the rotating mechanism. That is, when the second swing arm slides along an oblique line relative to the second surface of the second housing, the second door panel also slides along an oblique line relative to the second surface of the second housing, thereby optimizing the movement trajectory of the second door panel and avoiding interference with the second rear cover.

[0024] In one possible implementation, the first rotating part includes a first swing arm and a first fixed frame. The first fixed frame is fixedly connected to the first housing, the first swing arm is fixedly connected to the first door panel, one end of the first swing arm is rotatably connected to the middle beam, and the other end of the first swing arm is slidably connected to the first fixed frame. The sliding direction of the first swing arm relative to the first fixed frame is inclined to the first surface.

[0025] Understandably, in the fully unfolded state, the end of the first door panel closer to the middle door panel is higher than the third surface of the first rear cover, while the end of the first door panel farther from the middle door panel is lower than the third surface of the first rear cover. Therefore, in the fully unfolded state, the main body of the first door panel is tilted. Since the first door panel is fixedly connected to the first swing arm, the opening and closing action of the first door panel requires the first swing arm to drive it, and the sliding direction of the first swing arm relative to the first fixed frame must adapt to the tilted shape of the first door panel.

[0026] Therefore, by adapting the sliding direction of the first swing arm to the tilting direction of the first door panel and setting it to tilt sliding, that is, the sliding direction of the first swing arm relative to the first fixed frame is tilted to the first surface of the first rear cover, it can be ensured that the opening and closing action of the first door panel can be smooth and easy, thereby ensuring that the folding of the rotating mechanism can also be smooth and easy, and avoiding interference between the various structures.

[0027] It should be noted that in order to ensure that the flexible display screen remains the same length during the unfolding and folding of the entire machine, the rotation center line of the first swing arm and the middle beam needs to be adjusted. The specific position of the rotation center line of the first swing arm and the middle beam can be determined by the requirement of the flexible display screen to remain the same length, and can be as close as possible to the middle outer surface of the middle beam.

[0028] The second rotating part includes a second swing arm and a second fixed frame. The second fixed frame is fixedly connected to the second housing, and the second swing arm is fixedly connected to the second door panel. One end of the second swing arm is rotatably connected to the middle beam, and the other end of the second swing arm is slidably connected to the second fixed frame. The sliding direction of the second swing arm relative to the second fixed frame is inclined to the second surface.

[0029] Understandably, in the fully unfolded state, the end of the second door panel closer to the middle door panel is higher than the fourth surface of the second rear cover, while the end of the second door panel farther from the middle door panel is lower than the fourth surface of the second rear cover. Therefore, in the fully unfolded state, the main body of the second door panel is tilted. Since the second door panel is fixedly connected to the second swing arm, the opening and closing action of the second door panel requires the second swing arm to drive it. The sliding direction of the second swing arm relative to the second fixed frame must adapt to the tilted shape of the second door panel.

[0030] Therefore, by adapting the sliding direction of the second swing arm to the tilting direction of the second door panel and setting it to tilt sliding, that is, the sliding direction of the second swing arm relative to the second fixed frame is tilted to the second surface of the second rear cover, it can be ensured that the opening and closing action of the second door panel can be smooth and easy, thereby ensuring that the folding of the rotating mechanism can also be smooth and easy, and avoiding interference between the various structures.

[0031] It should be noted that in order to ensure that the flexible display screen remains the same length during the unfolding and folding of the entire machine, the rotation center line of the second swing arm and the middle beam needs to be adjusted. The specific position of the rotation center line of the second swing arm and the middle beam can be determined by the requirement of the flexible display screen to remain the same length, and can be as close as possible to the middle outer surface of the middle beam.

[0032] In one possible implementation, a first receiving groove is formed between the first fixing frame and the first rear cover, the first door panel is slidable within the first receiving groove, and the cross-sectional width of the first receiving groove along the thickness direction of the electronic device gradually increases from the middle beam toward the first housing.

[0033] With this configuration, the first receiving groove can be a trapezoidal groove with a gradient in width, which helps to provide a certain amount of space for the sliding action of the first door panel relative to the first housing, and avoids the problem of the first door panel getting stuck due to interference with the first fixing frame during the sliding process, thus ensuring high reliability.

[0034] A second receiving groove is formed between the second fixing frame and the second rear cover. The second door panel can slide in the second receiving groove. The cross-sectional width of the second receiving groove along the thickness direction of the electronic device gradually increases from the middle beam towards the second housing.

[0035] In this configuration, the second receiving section can have a trapezoidal groove with a gradient in width, which helps to provide a certain amount of space for the sliding action of the second door panel relative to the second housing. This avoids the problem of the second door panel getting stuck due to interference with the second fixing frame during the sliding process, resulting in good reliability.

[0036] In one possible implementation, the first door panel includes a first outer surface facing away from the first rotating part, and when the first housing and the second housing are unfolded relative to each other, a portion of the first outer surface is flush with the intermediate outer surface.

[0037] The second door panel includes a second outer surface, which faces away from the second rotating part. When the first housing and the second housing are unfolded relative to each other, part of the second outer surface is flush with the middle outer surface.

[0038] With this configuration, the ends of the first and second door panels near the middle door panel can be raised to be flush with the middle door panel, so that the gap between the first and middle door panels, as well as the gap between the second and middle door panels, can meet the appearance requirements of electronic devices, which helps to improve the overall refinement of the device.

[0039] In one possible implementation, the center beam includes a center beam seat and a center beam cover plate, the center beam cover plate being connected to one side of the center beam seat, and the intermediate door panel being connected to the surface of the center beam cover plate opposite to the center beam seat;

[0040] The middle door panel and the middle beam cover plate are connected to form an integrated structure.

[0041] Understandably, by connecting the intermediate door panel and the center beam cover plate to form an integrated structure, the intermediate door panel and the center beam cover plate can be unified into a single unit. Compared to a separate structure, the integrated intermediate door panel and center beam cover plate allow for an increase in the thickness of the center beam cover plate, effectively increasing its cross-sectional area along the thickness direction. This further enhances the overall strength and rigidity of the center beam, thus improving the reliability of the entire shaft. For example, integrating the intermediate door panel and center beam cover plate can increase the cross-sectional area of ​​the center beam along its thickness direction by approximately 50%.

[0042] In one possible implementation, the center beam further includes a locking member that passes through the center beam seat and the center beam cover plate and is fixedly connected to the center beam seat and the center beam cover plate, with a portion of the locking member exposed on the surface of the center beam seat facing away from the center beam cover plate.

[0043] Understandably, due to the integrated design of the middle door panel and the middle beam cover, to avoid damaging the appearance of the middle door panel when locking the middle beam cover and the middle beam seat, the starting direction of the locking mechanism must avoid the side of the middle beam cover closest to the middle door panel and be adjusted to the side of the middle beam seat closest to the flexible display screen. That is, the locking mechanism needs to start from the bottom of the middle beam seat, pass through the top of the middle beam seat, and end at the middle beam cover.

[0044] In one possible implementation, the rotating mechanism further includes a screen under-screw support connected to the surface of the center beam seat opposite to the center beam cover plate and covering the locking member.

[0045] Understandably, since the locking component is engaged from the side of the center beam seat closest to the flexible display screen towards the center beam cover plate, a portion of the locking component will be exposed when the center beam seat and center beam cover plate are engaged. Therefore, on the one hand, providing an under-screen support component that covers the locking component prevents the locking component from being exposed, providing good shielding and aesthetic benefits. On the other hand, providing an under-screen support component that covers the locking component ensures that the under-screen support component remains between the flexible display screen and the locking component during the unfolding and folding of the electronic device, thus acting as a separator between the flexible display screen and the locking component and protecting it from being squeezed by the locking component.

[0046] In one possible implementation, the central beam is an integral structure.

[0047] Understandably, the integrated structure results in fewer parts for the central beam, which simplifies the manufacturing process and improves the production and assembly efficiency of the central beam.

[0048] In one possible implementation, the electronic device further includes a flexible display screen connected to the first housing, the second housing, and the rotating mechanism, and located on the side of the central beam opposite to the intermediate door panel.

[0049] Understandably, because the outward fold of the flexible display screen in outward-folding electronic devices is smaller than the inward fold, the damage to the flexible display screen is relatively weak. When the phone is flattened, there are almost no creases at the fold, making the entire screen very smooth, which greatly improves the texture of the electronic device and also increases the lifespan of the screen. Attached Figure Description

[0050] Figure 1 is a simplified structural diagram of the electronic device provided in an embodiment of this application;

[0051] Figure 2 is a simplified structural diagram of the electronic device shown in Figure 1 when it is in a folded state;

[0052] Figure 3 is a simplified structural diagram of the electronic device shown in Figure 1 when it is in an intermediate state;

[0053] Figure 4 is a schematic diagram of the electronic device shown in Figure 1 when it is in the unfolded state;

[0054] Figure 5 is a schematic diagram of the rotating mechanism of the electronic device shown in Figure 1;

[0055] Figure 6 is an exploded view of the rotating mechanism shown in Figure 5;

[0056] Figure 7 is a schematic diagram of a partial cross-section obtained by cutting along the cutting line AA shown in Figure 4;

[0057] Figure 8 is a partial structural diagram of the middle beam of the rotating mechanism shown in Figure 5;

[0058] Figure 9 is a schematic diagram of another part of the structure of the middle beam of the rotating mechanism shown in Figure 5 from one angle.

[0059] Figure 10 is a schematic diagram of a structure of the middle beam seat of the rotating mechanism shown in Figure 5;

[0060] Figure 11a is another structural schematic diagram of the middle beam seat of the rotating mechanism shown in Figure 5.

[0061] Figure 11b is an exploded view of the middle beam seat shown in Figure 11a;

[0062] Figure 12 is an exploded schematic diagram of part of the structure of the central beam shown in Figure 9;

[0063] Figure 13 is a structural schematic diagram of the integrated middle beam cover plate and middle door panel of the middle beam shown in Figure 9;

[0064] Figure 14 is a schematic diagram of another part of the structure of the middle beam of the rotating mechanism shown in Figure 5 from another angle.

[0065] Figure 15 is a schematic diagram of a partial cross-section obtained by cutting along the cutting line BB shown in Figure 4;

[0066] Figure 16 is a schematic diagram of another partial structure of the middle beam of the rotating mechanism shown in Figure 5 from one angle.

[0067] Figure 17 is a partial structural diagram of the assembly of the middle beam, the first rotating part, and the second rotating part of the rotating mechanism shown in Figure 5.

[0068] Figure 18 is a partial structural diagram of the first and second fixed frames of the rotating mechanism shown in Figure 5.

[0069] Figure 19 is a partial structural diagram of the assembly of the middle beam, the first swing arm, and the second swing arm of the rotating mechanism shown in Figure 5.

[0070] Figure 20a is a structural schematic diagram of the first and second swing arms of the rotating mechanism shown in Figure 5 at an angle;

[0071] Figure 20b is a structural schematic diagram of the first and second swing arms of the rotating mechanism shown in Figure 5 from another angle;

[0072] Figure 21a is a structural schematic diagram of a portion of the first and second door plates of the rotating mechanism shown in Figure 5 at one angle.

[0073] Figure 21b is a structural schematic diagram of the first and second door plates of the rotating mechanism shown in Figure 5 from another angle.

[0074] Figure 22 is a partial structural diagram of the first door plate and the first swing arm assembly and the second door plate and the second swing arm assembly of the rotating mechanism shown in Figure 5.

[0075] Figure 23 is a schematic diagram of a partial cross-section obtained by cutting along the cutting line CC shown in Figure 4;

[0076] Figure 24 is a schematic diagram of a partial cross-section obtained by cutting along the cutting line DD shown in Figure 3;

[0077] Figure 25 is a schematic diagram of a partial cross-section obtained by cutting along the cutting line EE shown in Figure 2;

[0078] Figure 26 is a cross-sectional schematic diagram of a portion of the electronic device in the deployed state in the comparative embodiment. Detailed Implementation

[0079] For ease of understanding, the terminology used in the embodiments of this application will be explained first.

[0080] And / or: This is simply a way of describing the relationship between related objects. It indicates that there can be three kinds of relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0081] Multiple: refers to two or more.

[0082] Connection: should be interpreted broadly. For example, the connection between A and B can be a direct connection between A and B, or an indirect connection between A and B through an intermediary.

[0083] The specific embodiments of this application will now be clearly described in conjunction with the accompanying drawings.

[0084] Embodiments of this application provide an electronic device. The electronic device can be any device with foldable capabilities, capable of unfolding and closing under user operation. The electronic device includes, but is not limited to, mobile phones, laptops, tablets, foldable computers, handheld game consoles, personal digital assistants, wearable devices, or in-vehicle devices.

[0085] Understandably, when an electronic device is a foldable phone, it can include both inward-folding and outward-folding phones. In outward-folding phones, the outward fold is less pronounced than the inward fold, resulting in less damage to the flexible screen. When the phone is flattened, there are almost no creases at the fold, making the screen very smooth and significantly improving the phone's overall feel while also extending the screen's lifespan.

[0086] The following description will use an outward-folding mobile phone as an example. Of course, in other embodiments, the electronic device may also include, but is not limited to, an inward-folding mobile phone, a tablet computer, a handheld game console, an e-reader, a wearable device, etc., and there is no strict limitation on this.

[0087] Please refer to Figure 1, which is a simplified structural diagram of the electronic device 200 provided in an embodiment of this application.

[0088] For ease of description, the length direction of the electronic device 200 is defined as the X direction, the width direction as the Y direction, and the thickness direction as the Z direction. The X, Y, and Z directions are all perpendicular to each other.

[0089] The electronic device 200 may include a flexible display screen 210, a first housing 220, a second housing 230, and a rotating mechanism 100. The rotating mechanism 100 is connected between the first housing 220 and the second housing 230 to achieve a rotatable connection between them. The first housing 220 and the second housing 230 can rotate relative to each other via the rotating mechanism 100, allowing the electronic device 200 to switch between a folded state, an intermediate state, and an unfolded state to meet user needs in different scenarios. The first housing 220 and the second housing 230 also have a receiving space (not shown) for accommodating electronic components such as the processor, circuit board, and camera module, as well as structural components of the electronic device 200. The flexible display screen 210 is connected to the first housing 220, the second housing 230, and the rotating mechanism 100. The flexible display screen 210 can be unfolded or folded by the movement of the first housing 220, the second housing 230, and the rotating mechanism 100.

[0090] The flexible display screen 210 is an outward-folding screen, meaning that when the electronic device 200 is in a folded state, the flexible display screen 210 can constitute the external display surface of the electronic device 200. The flexible display screen 210 can be a flexible screen that is foldable throughout, or it can be a combination of a foldable flexible screen in the middle area and rigid screens at both ends; there are no strict limitations on this.

[0091] For example, the flexible display screen 210 can be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode (MLED) display screen, a micro organic light-emitting diode (MOLED) display screen, a quantum dot light-emitting diode (QLED) display screen.

[0092] Specifically, the flexible display screen 210 may include a first portion 2110, a second portion 2120, and a foldable portion 2130. The foldable portion 2130 of the flexible display screen 210 is connected between the first portion 2110 and the second portion 2120 of the flexible display screen 210, and can be bent to accommodate the unfolding and folding of the electronic device 200. The first portion 2110 of the flexible display screen 210 is connected to the first housing 220, and the second portion 2120 of the flexible display screen 210 is connected to the second housing 230. The foldable portion 2130 of the flexible display screen 210 is disposed opposite to the rotating mechanism 100 in the Z direction.

[0093] Please refer to Figures 2, 3, and 4. Figure 2 is a simplified structural diagram of the electronic device 200 shown in Figure 1 when it is in a folded state. Figure 3 is a simplified structural diagram of the electronic device 200 shown in Figure 1 when it is in an intermediate state. Figure 4 is a schematic diagram of the electronic device 200 shown in Figure 1 when it is in an unfolded state.

[0094] In this embodiment, the electronic device 200 is capable of being folded once. In other embodiments, the electronic device 200 may also be capable of being folded multiple times (more than twice). In this case, the electronic device 200 may include multiple parts, with adjacent parts folded relatively close together until the electronic device 200 is in a folded state, and adjacent parts unfolded relatively far apart until the electronic device 200 is in an unfolded state.

[0095] The following description will use the example of the first housing 220 and the second housing 230 being arranged horizontally, allowing the electronic device 200 to fold in half horizontally. However, it should be understood that in other embodiments, the first housing 220 and the second housing 230 may also be arranged vertically, allowing the electronic device 200 to fold vertically.

[0096] As shown in Figure 2, the relative rotation of the first housing 220 and the second housing 230 causes the electronic device 200 to be in a folded state. This means that the first housing 220 and the second housing 230 rotate through the rotating mechanism 100 and come close to each other until they are in contact. When the electronic device 200 is in the folded state, the first housing 220 and the second housing 230 can be in partial or complete contact. At this time, the flexible display screen 210 is located on the outside of the electronic device 200, and the foldable portion 2130 of the flexible display screen 210 is bent. The first portion 2110 and the second portion 2120 of the flexible display screen 210 are positioned opposite each other. The electronic device 200 not only has a smaller size, making it easier for users to store and carry, but it can also display information using half of the flexible display screen 210 while simultaneously allowing users to operate it.

[0097] As shown in Figure 3, the relative rotation of the first housing 220 and the second housing 230 to bring the electronic device 200 to an intermediate state means that the first housing 220 and the second housing 230 rotate through the rotating mechanism 100 and move away from each other, causing the included angle between the first housing 220 and the second housing 230 to increase; or, the first housing 220 and the second housing 230 rotate through the rotating mechanism 100 and move closer to each other, causing the included angle between the first housing 220 and the second housing 230 to decrease. At this time, the foldable portion 2130 of the flexible display screen 210 still bends, but the bending amplitude of the foldable portion 2130 in the intermediate state is less than the bending amplitude of the foldable portion 2130 in the folded state.

[0098] As shown in Figure 4, the relative rotation of the first housing 220 and the second housing 230 causes the electronic device 200 to be in an unfolded state. This means that the first housing 220 and the second housing 230 rotate through the rotating mechanism 100 and move away from each other, with the included angle between the first housing 220 and the second housing 230 continuing to increase, approaching or equaling 180 degrees (within the allowable tolerance range). At this time, the foldable portion 2130 of the flexible display screen 210 is flattened, and the first part 2110 and the second part 2120 of the flexible display screen 210 are unfolded relative to each other. The electronic device 200 can achieve large-screen display, providing users with richer information and a better user experience.

[0099] Referring to Figures 1-4, the first housing 220 may include a first middle frame 2210 and a first back cover 2220. The first back cover 2220 and the first portion 2110 of the flexible display screen 210 are respectively connected to opposite sides of the first middle frame 2210 in the thickness direction, so that the first back cover 2220 and the first portion 2110 of the flexible display screen 210 are arranged opposite to each other in the opposite direction of the Z direction. The first back cover 2220 can be understood as the battery cover of the electronic device 200.

[0100] The first rear cover 2220 may include a first surface 2221 and a third surface (not shown). The first surface 2221 of the first rear cover 2220 is the surface of the first rear cover 2220 exposed to the outside of the electronic device 200, and can also be understood as the large surface of the first housing 220 exposed to the outside of the electronic device 200 (the surface of the first housing 220 with the largest area exposed to the outside of the electronic device 200). The third surface of the first rear cover 2220 is the surface of the first rear cover 2220 facing the inside of the electronic device 200. The first surface 2221 and the third surface of the first rear cover 2220 are arranged opposite to each other along the thickness direction of the first rear cover 2220 (i.e., the opposite direction of the Z direction).

[0101] The second housing 230 may include a second middle frame 2310 and a second rear cover 2320. The second rear cover 2320 and the second portion 2120 of the flexible display screen 210 are respectively connected to opposite sides of the second middle frame 2310 in the thickness direction, so that the second rear cover 2320 and the second portion 2120 of the flexible display screen 210 are arranged opposite each other in the opposite direction of the Z direction. The second rear cover 2320 can be understood as the battery cover of the electronic device 200.

[0102] The second rear cover 2320 may include a second surface 2321 and a fourth surface (not shown). The second surface 2321 of the second rear cover 2320 is the surface of the second rear cover 2320 exposed to the outside of the electronic device 200, and can also be understood as the large surface of the second housing 230 exposed to the outside of the electronic device 200 (the surface of the second housing 230 with the largest area exposed to the outside of the electronic device 200). The fourth surface of the second rear cover 2320 is the surface of the second rear cover 2320 facing the inside of the electronic device 200. The second surface 2321 and the fourth surface of the second rear cover 2320 are arranged opposite to each other along the thickness direction of the second rear cover 2320 (i.e., the opposite direction of the Z direction).

[0103] When the electronic device 200 is in the unfolded state, the first housing 220 and the second housing 230 unfold relative to each other, and the first rear cover 2220 of the first housing 220 and the second rear cover 2320 of the second housing 230 can be arranged in the same layer. The gap area between the first rear cover 2220 of the first housing 220 and the second rear cover 2320 of the second housing 230 can be used to accommodate part of the rotating mechanism 100, so as to make full use of the space in the electronic device 200 and improve the space utilization rate of the electronic device 200.

[0104] Furthermore, when the electronic device 200 is in the unfolded state, the first surface 2221 of the first rear cover 2220 and the second surface 2321 of the second rear cover 2320 can be flush, and the third surface 2222 of the first rear cover 2220 and the fourth surface 2322 of the second rear cover 2320 can be flush. Here, "the first surface 2221 of the first rear cover 2220 and the second surface 2321 of the second rear cover 2320 are flush" means that the first surface 2221 of the first rear cover 2220 and the second surface 2321 of the second rear cover 2320 are coplanar, or that the height difference between the first surface 2221 of the first rear cover 2220 and the second surface 2321 of the second rear cover 2320 is within an acceptable error range. The fact that the third surface 2222 of the first back cover 2220 is flush with the fourth surface 2322 of the second back cover 2320 means that the third surface 2222 of the first back cover 2220 and the fourth surface 2322 of the second back cover 2320 are coplanar, or that the height difference between the third surface 2222 of the first back cover 2220 and the fourth surface 2322 of the second back cover 2320 is within the allowable error range.

[0105] Please refer to Figures 5 and 6. Figure 5 is a structural schematic diagram of the rotating mechanism 100 of the electronic device 200 shown in Figure 1, and Figure 6 is an exploded schematic diagram of the rotating mechanism 100 shown in Figure 5.

[0106] The rotating mechanism 100 may include a center beam 10, a first rotating part W1, a second rotating part W2, and a door panel assembly W3. The first rotating part W1 and the second rotating part W2 are located on opposite sides of the center beam 10 in the width direction (i.e., the X direction). The first rotating part W1 is rotatably connected to the center beam 10, and one end of the first rotating part W1 away from the center beam 10 extends into and is fixedly connected to the first housing 220. The second rotating part W2 is rotatably connected to the center beam 10, and one end of the second rotating part W2 away from the center beam 10 extends into and is fixedly connected to the second housing 230. The door panel assembly W3 includes a middle door panel 60, a first door panel 70, and a second door panel 80. The middle door panel 60 is connected to the center beam 10, and the first door panel 70 and the second door panel 80 are located on opposite sides of the middle door panel 60 in the width direction (i.e., the X direction). The first door panel 70 is fixedly connected to the first rotating part W1 and slidably connected to the first housing 220. A portion of the first door panel 70 is located outside the first housing 220 and covers a portion of the first rotating part W1; another portion of the first door panel 70 is located inside the first housing 220. The second door panel 80 is fixedly connected to the second rotating part W2 and slidably connected to the second housing 230. A portion of the second door panel 80 is located outside the second housing 230 and covers a portion of the second rotating part W2; another portion of the second door panel 80 is located inside the second housing 230. The flexible display screen 210 is located on the side of the central beam 10 opposite to the middle door panel 60.

[0107] The central beam 10 remains stationary during the relative folding and unfolding of the first housing 220 and the second housing 230. In other words, during the relative folding and unfolding of the first housing 220 and the second housing 230, the central beam 10 maintains its position without change, i.e., it remains relatively stationary, while both the first housing 220 and the second housing 230 can rotate relative to the central beam 10. When the first housing 220 rotates relative to the central beam 10, it drives the first rotating part W1 to rotate relative to the central beam 10, thereby driving the first door panel 70 to rotate relative to the central beam 10. When the second housing 230 rotates relative to the central beam 10, it drives the second rotating part W2 to rotate relative to the central beam 10, thereby driving the second door panel 80 to rotate relative to the central beam 10.

[0108] Please refer to Figure 7, which is a partial cross-sectional view obtained by cutting along the section line AA shown in Figure 4. In Figure 7, for ease of illustration, the dashed line is used as the boundary, with the middle beam 10 above the dashed line and the middle door panel 60 below the dashed line.

[0109] When the electronic device 200 is in the unfolded state, the first housing 220 and the second housing 230 unfold relative to each other, and at least a portion of the middle door plate 60 of the rotating mechanism 100 is located in the gap area between the first rear cover 2220 of the first housing 220 and the second rear cover 2320 of the second housing 230, so that at least a portion of the middle door plate 60 of the rotating mechanism 100 is disposed in the same layer as the first rear cover 2220 of the first housing 220 and / or the second rear cover 2320 of the second housing 230.

[0110] Understandably, in related technologies, the center beam in the hinge is the most important load-bearing component. All the swing arms in the hinge are connected to the center beam via kinematic pairs, and even synchronization and damping mechanisms may be located within it. Therefore, the strength and rigidity of the center beam directly affect the reliability of the entire hinge and even the entire device, as well as the user experience. The hinge typically includes the center beam and a central decorative panel fixed to it. Therefore, the thickness dimension T1 of the center beam = (thickness of the flattened device T0) - (thickness of the screen module T2) - (thickness of the battery cover T3) - (thickness of the central decorative panel T4). The thickness of the battery cover and the central decorative panel is limited by materials and manufacturing processes, making further reduction difficult. Therefore, with the trend towards thinner and lighter folding phones, the thickness dimension of the center beam is decreasing, leading to a decline in its strength and rigidity, making it difficult to meet the reliability requirements of the hinge and even the entire device.

[0111] Based on this, in the embodiments of this application, when the whole machine is in the unfolded state, by making at least a portion of the middle door panel 60 disposed in the same layer as the rear covers of the left and right shells, the middle door panel 60 can be positioned in the thickness direction of the whole machine at a position with a small distance difference or no distance difference from the rear covers of the left and right shells, so that the position of the middle door panel 60 can be closer to the rear covers of the left and right shells. When the entire machine is in a flattened state, the position of the middle door panel 60 is made closer to the rear covers of the left and right shells. This allows the position of the middle door panel 60 to be raised to the same height as or with a small height difference between the rear covers of the left and right shells. As a result, in the thickness composition of the entire machine, the thickness dimension T1 of the middle beam 10 is adjusted from the flattened thickness T0 of the entire machine to the flattened thickness T0 of the screen module to the thickness T2 of the battery cover (i.e., the thickness of the first rear cover 2220 and / or the second rear cover 2320) to the thickness T4 of the middle decorative door panel (i.e., the thickness of the middle door panel 60).

[0112] On the one hand, based on the aforementioned dimensional formula, when the overall flattened thickness T0, screen module thickness T2, and middle decorative door panel thickness T4 remain unchanged or change only slightly, the thickness dimension T1 of the center beam 10 can be increased by the thickness of a battery cover T3. This allows for more space to be allocated to the center beam 10 in the thickness direction of the entire machine, significantly increasing its cross-sectional area. With this increase in the cross-sectional area of ​​the center beam 10, not only are its strength and rigidity enhanced, but the various structures connected to it in the kinematic pair are also strengthened to varying degrees. This results in a comprehensive enhancement of the rotating mechanism 100, meeting the overall reliability requirements of the shaft. For example, using the above design scheme, under the same design constraints, the cross-sectional area of ​​the center beam 10 in the thickness direction can be increased by approximately 34%.

[0113] On the other hand, based on the aforementioned dimensional formula, with the thickness T1 of the central beam 10, the screen module thickness T2, and the thickness T4 of the middle decorative door panel remaining unchanged or changing only slightly, it can support a reduction in the overall thickness T0 in the flattened state by at least one battery cover thickness T3, and a reduction in the overall thickness in the folded state by at least two battery cover thicknesses T3. In other words, while maintaining the strength and stiffness of the central beam in the conventional design, the solution of the embodiment of this application can support thickness reduction in both the flattened and folded states of the device, thereby achieving a thinner and lighter electronic device 200. For example, if the battery cover thickness is A mm, this solution can support a thickness reduction of A mm in the flattened state and a thickness reduction of 2A mm in the folded state.

[0114] Please refer to Figure 7. The surface of the middle door panel 60 that faces away from the middle beam 10 is the middle exterior surface 61 of the middle door panel 60.

[0115] When the electronic device 200 is in the unfolded state, at least a portion of the middle door panel 60 of the rotating mechanism 100 is disposed in the same layer as the first rear cover 2220 of the first housing 220 and / or the second rear cover 2320 of the second housing 230. This means that when the first housing 220 and the second housing 230 are unfolded relative to each other, the middle outer surface 61 of the middle door panel 60 can be convex in the Z direction relative to the third surface 2222 of the first rear cover 2220 and / or the fourth surface 2322 of the second rear cover 2320, and concave in the opposite direction of the Z direction relative to the first surface 2221 of the first rear cover 2220 and / or the second surface 2321 of the second rear cover 2320. That is, the middle appearance surface 61 of the middle door panel 60 can be higher than the third surface 2222 of the first back cover 2220 and / or the fourth surface 2322 of the second back cover 2320, and lower than the first surface 2221 of the first back cover 2220 and / or the second surface 2321 of the second back cover 2320.

[0116] Alternatively, when the first housing 220 and the second housing 230 are unfolded relative to each other, the middle outer surface 61 of the middle door panel 60 can protrude along the Z direction relative to the third surface 2222 of the first rear cover 2220 and / or the fourth surface 2322 of the second rear cover 2320, and be flush with the first surface 2221 of the first rear cover 2220 and / or the second surface 2321 of the second rear cover 2320. That is, the middle outer surface 61 of the middle door panel 60 can be higher than the third surface 2222 of the first rear cover 2220 and / or the fourth surface 2322 of the second rear cover 2320, and be flush with the first surface 2221 of the first rear cover 2220 and / or the second surface 2321 of the second rear cover 2320. Wherein, the middle appearance surface 61 of the middle door panel 60 is flush with the first surface 2221 of the first rear cover 2220 and / or the second surface 2321 of the second rear cover 2320, meaning that the middle appearance surface 61 of the middle door panel 60 is coplanar with the first surface 2221 of the first rear cover 2220 and / or the second surface 2321 of the second rear cover 2320, or the height difference between the middle appearance surface 61 of the middle door panel 60 and the first surface 2221 of the first rear cover 2220 and / or the second surface 2321 of the second rear cover 2320 is within the allowable error range.

[0117] The following description will use the example of the middle outer surface 61 of the middle door panel 60 being flush with the first surface 2221 of the first rear cover 2220 and / or the second surface 2321 of the second rear cover 2320. Of course, in other embodiments, the middle outer surface 61 of the middle door panel 60 may be lower than or higher than the first surface 2221 of the first rear cover 2220 and the second surface 2321 of the second rear cover 2320, and there is no strict limitation on this.

[0118] It is understandable that when the electronic device 200 is in the unfolded state, setting the middle outer surface 61 of the middle door panel 60 flush with the first surface 2221 of the first rear cover 2220 and the second surface 2321 of the second rear cover 2320 allows the middle door panel 60 to be lifted away from the screen, thereby changing the position of the middle door panel 60. This changes the distance between the middle door panel 60 and the first rear cover 2220 and the second rear cover 2320 in the thickness direction of the entire device, so that the middle door panel 60 has no or a small distance difference with the first rear cover 2220 and the second rear cover 2320 in the thickness direction of the entire device, that is, it can be roughly set at the same layer as the first rear cover 2220 and the second rear cover 2320. Based on the connection relationship between the middle door panel 60 and the central beam 10, the end of the central beam 10 that contacts the middle door panel 60 can also be lifted away from the screen along with the middle door panel 60. Therefore, while keeping the overall thickness unchanged in a flattened state, the increase in the dimension of the center beam in the thickness direction can be maximized, that is, the reinforcement is maximized. This further increases the cross-sectional area of ​​the center beam 10 in the thickness direction, which not only helps to further improve the strength and rigidity of the center beam 10 and improve the reliability of the whole machine, but also enhances the appearance of the electronic device 200 and the user experience.

[0119] Please refer to Figure 7. The surface of the center beam 10 facing the middle door panel 60 can be flush with the third surface 2222 of the first rear cover 2220 and / or the fourth surface 2322 of the second rear cover 2320. Here, "flush with the third surface 2222 of the first rear cover 2220 and / or the fourth surface 2322 of the second rear cover 2320" means that the surface of the center beam 10 facing the middle door panel 60 is coplanar with the third surface 2222 of the first rear cover 2220 and / or the fourth surface 2322 of the second rear cover 2320, or that the height difference between the surface of the center beam 10 facing the middle door panel 60 and the third surface 2222 of the first rear cover 2220 and / or the fourth surface 2322 of the second rear cover 2320 is within an acceptable error range.

[0120] It is understandable that by making the surface of the middle beam 10 facing the middle door panel 60 flush with the third surface 2222 of the first rear cover 2220 and / or the fourth surface 2322 of the second rear cover 2320, the middle door panel 60 connected to the middle beam 10 can be completely disposed in the same layer as the first rear cover 2220 and / or the second rear cover 2320, and the middle beam 10 can extend from the screen side of the electronic device 200 to the rear cover side of the electronic device 200 in the Z direction, thereby further increasing the cross-sectional dimension of the middle beam 10 in the Z direction. Due to the increase in the thickness of the middle beam 10 (i.e., the dimension of the middle beam 10 in the Z direction), the strength and stiffness of the middle beam 10 will be enhanced to a certain extent, thereby effectively improving the reliability of the middle beam 10.

[0121] Of course, in other embodiments, the surface of the center beam 10 facing the middle door panel 60 may also protrude in the Z direction relative to the third surface 2222 of the first rear cover 2220 and / or the fourth surface 2322 of the second rear cover 2320, and be recessed in the opposite direction of the Z direction relative to the first surface 2221 of the first rear cover 2220 and / or the second surface 2321 of the second rear cover 2320. Alternatively, the surface of the center beam 10 facing the middle door panel 60 may also be recessed in the opposite direction of the Z direction relative to the third surface 2222 of the first rear cover 2220 and / or the fourth surface 2322 of the second rear cover 2320. This is not strictly limited.

[0122] Please refer to Figures 8 and 9. Figure 8 is a partial structural diagram of the middle beam 10 of the rotating mechanism 100 shown in Figure 5, and Figure 9 is a schematic diagram of another partial structure of the middle beam 10 of the rotating mechanism 100 shown in Figure 5 from one angle.

[0123] In the embodiments of this application, the central beam 10 can extend along the Y direction, from one end of the rotating mechanism 100 to the other end of the rotating mechanism 100 in the Y direction. The central beam 10 is the most important load-bearing component in the rotating mechanism 100. It can form a kinematic pair connection with the swing arms in the first rotating part W1 and the second rotating part W2, and can also provide a certain load-bearing space for the synchronization mechanism that realizes the synchronous movement of the first housing 220 and the second housing 230, and the damping mechanism that realizes the good damping feel of the electronic device 200 to be arranged therein.

[0124] In one possible implementation, as shown in FIG8, the center beam 10 can be a one-piece structure. Exemplarily, the center beam 10 can be formed into a one-piece structure through integral molding. The center beam 10 can be fixedly connected to the intermediate door panel 60 by means such as adhesive bonding or welding.

[0125] Understandably, the integrated structure results in fewer parts for the center beam 10, which simplifies the manufacturing process and improves the production and assembly efficiency of the center beam 10.

[0126] In another possible implementation, as shown in Figure 9, the middle beam 10 can also be a split structure. It is understood that when the middle beam 10 is a split structure, it can be divided into multiple structures in the Z direction, and the same structural component can also be divided into multiple structures in the Y direction. This simplifies the middle beam 10 through layer-by-layer division, avoiding the problem of reduced strength due to excessive extension length of the same structural component, and facilitating positioning and assembly.

[0127] The following explanation will use the split-structure central beam 10 as an example, but it should be understood that this is not a limitation. Furthermore, the descriptions of the split-structure central beam 10 in the following explanation can be applied to the integrated-structure central beam 10, unless otherwise specified.

[0128] Referring to Figure 9, the center beam 10 may have a first rotating groove 11 and a second rotating groove 12. The first rotating groove 11 of the center beam 10 provides movement space for the rotation of the first swing arm 20 of the first rotating part W1 relative to the center beam 10. The second rotating groove 12 of the center beam 10 provides movement space for the rotation of the second swing arm 40 of the second rotating part W2 relative to the center beam 10.

[0129] The first rotating groove 11 and the second rotating groove 12 of the central beam 10 are arranged opposite each other in the X direction and offset in the Y direction. The offset arrangement of the first rotating groove 11 and the second rotating groove 12 in the Y direction means that they can be arranged in a completely offset, spaced-out manner in the Y direction, or in a partially offset manner with some overlap. When the first rotating groove 11 and the second rotating groove 12 are partially offset in the Y direction, not only can the structures of the first rotating groove 11 and the second rotating groove 12 be made independent and non-interfering, but the size of the central beam 10 along the X direction can also be reduced to the maximum extent, which is beneficial for miniaturization and thinning of the electronic device 200.

[0130] The opening of the first rotating groove 11 of the center beam 10 is located on one side of the center beam 10 along the X direction, so as to allow the first swing arm 20 of the first rotating part W1 to extend into the groove. The opening of the second rotating groove 12 of the center beam 10 is located on the other side of the center beam 10 along the X direction, so as to allow the second swing arm 40 of the second rotating part W2 to extend into the groove. The extending direction of the first rotating groove 11 of the center beam 10 is opposite to the extending direction of the second rotating groove 12 of the center beam 10.

[0131] For example, there can be two first rotating slots 11, located on the same side of the middle beam 10, with the opening directions of the two first rotating slots 11 being the same and spaced apart at both ends of the middle beam 10 along the Y direction. Each first rotating slot 11 is used to install a first swing arm 20 in the first rotating part W1. There can also be two second rotating slots 12, located on the same side of the middle beam 10, with the opening directions of the two first rotating slots 11 being the same and spaced apart at both ends of the middle beam 10 along the Y direction. Each second rotating slot 12 is used to install a second swing arm 40 in the second rotating part W2. The opening direction of the second rotating slot 12 is opposite to the opening direction of the first rotating slot 11. Both the first rotating slot 11 and the second rotating slot 12 can be arc-shaped slots.

[0132] It should be noted that a first rotating groove 11 and a second rotating groove 12 can form a set of rotating groove structures. According to the actual application requirements of the rotating mechanism 100, one or more sets of rotating groove structures can be set on the middle beam 10, and the setting position of one or more sets of rotating groove structures can be selected according to the actual application requirements, without strict restrictions.

[0133] Furthermore, the first rotating groove 11 and the second rotating groove 12 of the center beam 10 can be either an integral structure located on the center beam 10 or an assembled structure formed by splicing multiple components in the center beam 10. The following explanation will take the example of the first rotating groove 11 and the second rotating groove 12 of the center beam 10 being an assembled structure formed by splicing multiple components in the center beam 10, but it should be understood that this is not a limitation.

[0134] Referring to Figure 9, the center beam 10 may include a center beam seat 13 and a center beam cover plate 14. The center beam seat 13 can be used to provide a mounting base for the first rotating part W1 and the second rotating part W2. The center beam cover plate 14 can conceal some of the structural components disposed in the center beam 10, achieving a good appearance for the electronic device 200. The center beam cover plate 14 can be spliced ​​with the center beam seat 13 to form the first rotating groove 11 and the second rotating groove 12 of the center beam 10.

[0135] Please refer to Figures 10, 11a, and 11b. Figure 10 is a schematic diagram of one structure of the middle beam seat 13 of the middle beam 10 of the rotating mechanism 100 shown in Figure 5. Figure 11a is a schematic diagram of another structure of the middle beam seat 13 of the middle beam 10 of the rotating mechanism 100 shown in Figure 5. Figure 11b is an exploded schematic diagram of the middle beam seat 13 shown in Figure 11a.

[0136] The center beam seat 13 can extend along the Y direction, and in the Y direction, it extends from one end of the rotation mechanism 100 to the other end of the rotation mechanism 100. The center beam seat 13 can include a top 131 and a bottom 132, with the bottom 132 and the top 131 of the center beam seat 13 arranged opposite each other in the Z direction. The top 131 of the center beam seat 13 faces the middle door panel 60, and the bottom 132 of the center beam seat 13 faces the flexible display screen 210. The center beam seat 13 can be an integral structure or an assembled structure.

[0137] As shown in Figure 10, when the middle beam seat 13 is an integral structure, it is a separate structural component that can independently extend from one end of the rotating mechanism 100 to the other end. Exemplarily, the middle beam seat 13 can be formed into an integral structure through integral molding. It is understood that the integral structure results in fewer parts for the middle beam seat 13, which simplifies the manufacturing process and improves the production and assembly efficiency of the middle beam seat 13.

[0138] As shown in Figures 11a and 11b, when the middle beam seat 13 is an assembled structure, it may include multiple sub-seats 133. These sub-seats 133 can be arranged along the Y direction. Each sub-seat 133 extends along the Y direction, and its extension length is less than the total extension length of the middle beam seat 13. The multiple sub-seats 133 can be connected end-to-end to form a middle beam seat 13 extending from one end of the rotating mechanism 100 to the other end of the rotating mechanism 100.

[0139] Understandably, on the one hand, dividing the long center beam seat 13 into multiple shorter sub-seats 133 can effectively prevent the center beam seat 13 from failing due to damage or breakage during processing, handling, and assembly caused by its excessive length, thus ensuring high reliability. On the other hand, dividing the long center beam seat 13 into multiple shorter sub-seats 133 means that when damage occurs in the center beam seat 13, only the damaged sub-seat 13 needs to be replaced, rather than replacing the entire center beam seat 13. This helps avoid material waste and effectively reduces the maintenance cost of the center beam seat 13.

[0140] Please refer to Figures 12 and 13. Figure 12 is an exploded view of part of the structure of the middle beam 10 shown in Figure 9, and Figure 13 is a structural diagram of the integrated middle beam cover plate 14 and the middle door panel 60 of the middle beam 10 shown in Figure 9.

[0141] The center beam cover plate 14 is connected to the top 131 of the center beam seat 13. The center beam cover plate 14 can extend along the Y direction, from one end of the rotation mechanism 100 to the other end of the rotation mechanism 100 in the Y direction. The surface of the center beam cover plate 14 facing away from the center beam seat 13 is connected to the intermediate door panel 60, and the center beam cover plate 14 and the intermediate door panel 60 can be connected to form an integral structure. The surface of the center beam cover plate 14 facing away from the center beam seat 13 is the surface of the center beam 10 that will be connected to the intermediate door panel 60. Exemplarily, the center beam cover plate 14 and the intermediate door panel 60 can be integrally formed to form an integral structure.

[0142] It is understandable that by connecting the intermediate door panel 60 and the middle beam cover plate 14 to form an integrated structure, the intermediate door panel 60 and the middle beam cover plate 14 can be unified into a single unit. Compared to the separate structure of the intermediate door panel 60 and the middle beam cover plate 14, the integrated intermediate door panel 60 and the middle beam cover plate 14 can increase the thickness of the middle beam cover plate 14 by the thickness of the intermediate door panel 60, effectively increasing the cross-sectional area of ​​the middle beam cover plate 14 in the thickness direction (i.e., the Z direction), thereby further enhancing the overall strength and rigidity of the middle beam 10, which is beneficial to improving the reliability of the entire shaft. For example, integrating the intermediate door panel 60 and the middle beam cover plate 14 can increase the cross-sectional area of ​​the middle beam 10 along the Z direction by approximately 50%.

[0143] Please refer to Figures 12, 14 and 15. Figure 14 is a schematic diagram of another part of the structure of the middle beam 10 of the rotating mechanism 100 shown in Figure 5 from another angle. Figure 15 is a schematic diagram of a partial cross-section obtained by cutting along the cutting line BB shown in Figure 4.

[0144] The center beam 10 may also include a locking element 15. The locking element 15 passes through the center beam seat 13 and the center beam cover plate 14, and is fixedly connected to the center beam seat 13 and the center beam cover plate 14. A portion of the locking element 15 is exposed on the surface of the center beam seat 13 facing away from the center beam cover plate 14. Exemplarily, the locking element 15 can be a screw. The number of locking elements 15 can be one or more. When there are multiple locking elements 15, they are arranged along the Y direction. The following description uses the structure of one locking element 15 and its connection with the center beam seat 13 and the center beam cover plate 14 as an example. Unless otherwise specified, the description of the structure of one locking element 15 and its connection with the center beam seat 13 and the center beam cover plate 14 can be applied to other locking elements 15.

[0145] Understandably, due to the integrated design of the middle door panel 60 and the middle beam cover plate 14, in order to avoid damaging the appearance of the middle door panel 60 when locking the middle beam cover plate 14 and the middle beam seat 13, the starting direction of locking the locking member 15 needs to avoid the side of the middle beam cover plate 14 closest to the middle door panel 60, and be adjusted to the side of the middle beam seat 13 closest to the flexible display screen 210. That is, the locking direction of the locking member 15 needs to start from the bottom 132 of the middle beam seat 13, pass through the top 131 of the middle beam seat 13, and end at the middle beam cover plate 14.

[0146] Specifically, the center beam seat 13 may have a first mounting hole 134. The first mounting hole 134 may be a through hole, extending through the center beam seat 13 in the Z direction. The center beam cover plate 14 may have a second mounting hole 141, which may be a blind hole, extending in the Z direction. The second mounting hole 141 of the center beam cover plate 14 and the first mounting hole 134 of the center beam seat 13 are opposite to each other in the opposite direction of the Z direction and are connected. The locking member 15 may include an end cap 151 and a column 152, with the end cap 151 connected to one end of the column 152. When the locking member 15 is connected to the center beam seat 13 and the center beam cover plate 14, the end cap 151 of the locking member 15 is located in the first mounting hole 134 of the center beam seat 13, and the column 152 of the locking member 15 is located in both the first mounting hole 134 of the center beam seat 13 and the second mounting hole 141 of the center beam cover plate 14. The first mounting hole 134 of the center beam seat 13 can expose part of the end cap 151 of the locking member 15. Exemplarily, the post 152 of the locking member 15 can be threadedly connected to the first mounting hole 134 of the center beam seat 13 and the second mounting hole 141 of the center beam cover plate 14. Of course, in other embodiments, the post 152 of the locking member 15 can also be welded or bonded to the first mounting hole 134 of the center beam seat 13 and the second mounting hole 141 of the center beam cover plate 14; this is not strictly limited.

[0147] In one possible implementation, please refer to Figure 16, which is a schematic diagram from an angle of another partial structure of the center beam 10 of the rotating mechanism 100 shown in Figure 5. The rotating mechanism 100 may further include a screen under-screen support 90, which may extend along the Y direction. The screen under-screen support 90 is located at the bottom 132 of the center beam seat 13 and is connected to the surface of the center beam seat 13 opposite to the center beam cover plate 14. The screen under-screen support 90 covers the locking member 15. Wherein, when there are multiple locking members 15, the screen under-screen support 90 covers multiple locking members 15. For a single locking member 15, the screen under-screen support 90 may cover the entire single locking member 15 or only a portion of the single locking member 15.

[0148] It is understandable that the locking member 15 is engaged from the side of the middle beam seat 13 closest to the flexible display screen 210 towards the middle beam cover plate 14. Therefore, when the locking member 15 completes the engagement between the middle beam seat 13 and the middle beam cover plate 14, part of the locking member 15 will be exposed on the middle beam seat 13. Thus, on the one hand, by providing the under-screen support member 90 and covering the locking member 15, the locking member 15 can be prevented from being exposed, providing a good shielding effect and aesthetic function. On the other hand, by providing the under-screen support member 90 and covering the locking member 15, the under-screen support member 90 can always be positioned between the flexible display screen 210 and the locking member 15 during the unfolding and folding of the electronic device 200, thereby providing a protective function by separating the flexible display screen 210 and the locking member 15 and preventing the locking member 15 from pressing against the flexible display screen 210.

[0149] Please refer to Figure 17, which is a partial structural diagram of the assembly of the middle beam 10 of the rotating mechanism 100 shown in Figure 5 with the first rotating part W1 and the second rotating part W2.

[0150] The first rotating part W1 may include a first swing arm 20 and a first fixed frame 30. The first fixed frame 30 is located on one side of the middle beam 10 along the X direction and is fixedly connected to the first housing 220. The first swing arm 20 is connected between the middle beam 10 and the first fixed frame 30. The second rotating part W2 may include a second swing arm 40 and a second fixed frame 50. The second fixed frame 50 is located on the other side of the middle beam 10 along the X direction and is fixedly connected to the second housing 230. The second swing arm 40 is connected between the middle beam 10 and the second fixed frame 50.

[0151] When the first housing 220 and the second housing 230 rotate relative to each other, the first housing 220 can drive the first fixed frame 30 to rotate relative to the middle beam 10, and drive the first swing arm 20 to rotate synchronously relative to the middle beam 10. The second housing 230 can drive the second fixed frame 50 to rotate relative to the middle beam 10, and drive the second swing arm 40 to rotate synchronously relative to the middle beam 10, thereby realizing the rotation of the rotating mechanism 100, so that the rotating mechanism 100 can be unfolded or folded.

[0152] It should be noted that, for ease of illustration, Figure 17 only shows one first swing arm 20 and one second swing arm 40. However, the entire rotating mechanism 100 can have multiple first swing arms 20 and multiple second swing arms 40. When the rotating mechanism 100 has multiple first swing arms 20 and multiple second swing arms 40, the multiple first swing arms 20 and multiple second swing arms 40 can be spaced apart along the Y direction. The following will further explain the connection relationship of the rotating mechanism 100 using one first swing arm 20 and one second swing arm 40 as an example, but it should be understood that this is not a limitation.

[0153] Please refer to Figures 17 and 18. Figure 18 is a partial structural diagram of the first fixed frame 30 and the second fixed frame 50 of the rotating mechanism 100 shown in Figure 5.

[0154] The first fixing frame 30 and the second fixing frame 50 are located on both sides of the central beam 10 along the X direction. Both the first fixing frame 30 and the second fixing frame 50 can rotate relative to the central beam 10 to realize the folded and unfolded states of the rotating mechanism 100. Specifically, the rotation directions of the first fixing frame 30 and the second fixing frame 50 are opposite. When the electronic device 200 is in the unfolded state, the rotating mechanism 100 is also in the unfolded state. The first fixing frame 30 and the second fixing frame 50 can be relatively flattened and jointly support the flexible display screen 210, making the flexible display screen 210 flatter and less prone to damage from external touch, which helps to improve the reliability of the flexible display screen 210. When the electronic device 200 is in the folded state, the rotating mechanism 100 is also in the folded state. The first fixing frame 30 and the second fixing frame 50 can be closed to be parallel to each other, thereby providing better support performance for the flexible display screen 210.

[0155] The first fixing frame 30 can extend along the Y direction and connect with the first housing 220 to achieve linkage with the first housing 220. That is, when the first housing 220 rotates, the first fixing frame 30 will be driven to rotate synchronously. As a result, the electronic device 200 as a whole has better tensile and compressive strength.

[0156] The first fixed frame 30 is provided with a first sliding groove 31, within which the first swing arm 20 can slide. As shown in Figure 7, the extending direction of the first sliding groove 31 is inclined to the first surface 2221 (i.e., the X direction) of the first rear cover 2220. The included angle between the first sliding groove 31 and the first surface 2221 of the first rear cover 2220 can be greater than 0° and less than 90°. The shortest distance along the Z direction between the first sliding groove 31 and the third surface 2222 of the first rear cover 2220 gradually increases from the central beam 10 toward the first housing 220.

[0157] It should be understood that the shape of the first groove 31 is adapted to the shape of the first swing arm 20 that slides within it, so that the sliding action of the first swing arm 20 within the first groove 31 can be smoother and more fluid.

[0158] For example, there can be two first slide grooves 31, which are spaced apart along the Y direction on the first fixed frame 30. Each first slide groove 31 can be used to allow a first swing arm 20 to slide within it. It should be noted that the number of first slide grooves 31 can be arranged as one or more according to actual application needs, as long as one first slide groove 31 corresponds to one first swing arm 20, there is no strict limitation on this.

[0159] The first fixed frame 30 is also provided with a first sliding body 32. The first sliding body 32 is located at the end of the first fixed frame 30 along the Y direction. The first sliding body 32 can be installed on the first door panel 70 to realize the sliding connection between the first fixed frame 30 and the first door panel 70.

[0160] Referring to Figures 17 and 18, the second fixing frame 50 can be mirror-symmetrical to the first fixing frame 30. The second fixing frame 50 can extend along the Y direction and connect to the second housing 230 to achieve linkage with the second housing 230. That is, when the second housing 230 rotates, the second fixing frame 50 will be driven to rotate synchronously. As a result, the electronic device 200 as a whole has better tensile and compressive strength.

[0161] The second fixed frame 50 is provided with a second sliding groove 51, within which the second swing arm 40 can slide. As shown in Figure 7, the extension direction of the second sliding groove 51 is inclined to the second surface 2321 (i.e., the X direction) of the second rear cover 2320. The included angle between the second sliding groove 51 and the second surface 2321 of the second rear cover 2320 can be greater than 0° and less than 90°. The shortest distance along the Z direction between the second sliding groove 51 and the fourth surface 2322 of the second rear cover 2320 gradually increases from the central beam 10 toward the second housing 230.

[0162] It should be understood that the shape of the second groove 51 is adapted to the shape of the second swing arm 40 that slides within it, so that the sliding action of the second swing arm 40 within the second groove 51 can be smoother and more fluid.

[0163] For example, there can be two second slide grooves 51, which are spaced apart along the Y direction on the second fixed frame 50. Each second slide groove 51 can be used to allow a second swing arm 40 to slide within it. It should be noted that the number of second slide grooves 51 can be arranged as one or more according to actual application needs, as long as one second slide groove 51 corresponds to one second swing arm 40, there is no strict limitation on this.

[0164] The second fixed frame 50 is also provided with a second sliding body 52. ​​The second sliding body 52 is located at the end of the second fixed frame 50 along the Y direction. The second sliding body 52 can be installed on the second door panel 80 to realize the sliding connection between the second fixed frame 50 and the second door panel 80.

[0165] Based on the above description, when the first housing 220 and the second housing 230 rotate relative to the central beam 10 and move closer to each other, the first fixing frame 30 and the second fixing frame 50 also rotate relative to the central beam 10 and move closer to each other, thereby realizing the folding of the electronic device 200. When the first housing 220 and the second housing 230 rotate relative to the central beam 10 and move away from each other, the first fixing frame 30 and the second fixing frame 50 also rotate relative to the central beam 10 and move away from each other, thereby realizing the unfolding of the electronic device 200.

[0166] Please refer to Figures 19, 20a, and 20b. Figure 19 is a partial structural diagram of the assembly of the middle beam 10, the first swing arm 20, and the second swing arm 40 of the rotating mechanism 100 shown in Figure 5. Figure 20a is a structural diagram of the first swing arm 20 and the second swing arm 40 of the rotating mechanism 100 shown in Figure 5 at one angle. Figure 20b is a structural diagram of the first swing arm 20 and the second swing arm 40 of the rotating mechanism 100 shown in Figure 5 at another angle.

[0167] The first swing arm 20 and the second swing arm 40 are located on both sides of the central beam 10 in the X direction, and the first swing arm 20 and the second swing arm 40 rotate in opposite directions. The first swing arm 20 and the second swing arm 40 can control the swing posture of the rotating mechanism 100, thereby supporting the flexible display screen 210 and improving the strength of the entire rotating mechanism 100.

[0168] One end of the first swing arm 20 is rotatably connected to the middle beam 10, and the other end of the first swing arm 20 is slidably connected to the first fixed frame 30. When the first housing 220 rotates relative to the middle beam 10, the first housing 220 drives the first fixed frame 30 to rotate relative to the middle beam 10. The first swing arm 20 can be driven to rotate relative to the middle beam 10 and slide relative to the first fixed frame 30 through the rotation of the first fixed frame 30 relative to the middle beam 10. Specifically, the first swing arm 20 may include a first swing arm body 21, a first rotating body 22, and a first sliding part 23.

[0169] The first swing arm body 21 is provided with a first through hole 211 and a first groove 212. The first through hole 211 extends through the first swing arm body 21 along the Z direction and is used to accommodate a damping mechanism (not shown) in the rotation mechanism 100. For example, the first through hole 211 can be used to accommodate the spring and cam assembly of the damping mechanism. The first groove 212 communicates with the first through hole 211 and is recessed from the center of the first swing arm body 21 towards the periphery of the first swing arm body 21. The first groove 212 can be used for the sliding part of the cam assembly of the damping mechanism to slide within it, so as to form a sliding engagement with the cam assembly to form a sliding pair.

[0170] The first rotating body 22 is connected to one end of the first swing arm body 21. The first rotating body 22 is installed in the first rotating groove 11 of the middle beam 10, and the first rotating body 22 can slide within the first rotating groove 11 of the middle beam 10. It can be understood that the first swing arm 20 can achieve rotational movement relative to the middle beam 10 through the sliding movement of the first rotating body 22 of the first swing arm 20 within the first rotating groove 11 of the middle beam 10, that is, the rotational connection between the first swing arm 20 and the middle beam 10 can be achieved. For example, the shape of the first rotating body 22 can be arc-shaped.

[0171] The first sliding part 23 is connected to the first swing arm body 21 and is mounted to the first slide groove 31 of the first fixing frame 30. The first sliding part 23 can slide within the first slide groove 31 of the first fixing frame 30. When the electronic device 200 is in the unfolded state, the extension direction of the first sliding part 23 is inclined to the extension direction (i.e., the X direction) of the first surface 2221 of the first rear cover 2220. The included angle between the first sliding part 23 and the first surface 2221 of the first rear cover 2220 can be greater than 0° and less than 90°. The shortest distance along the Z direction between the first sliding part 23 and the third surface 2222 of the first rear cover 2220 gradually increases from the center beam 10 toward the first housing 220.

[0172] Specifically, the first sliding part 23 may include two first sliders 231, which are located on both sides of the first swing arm body 21 and are arranged opposite each other along the Y direction. One end of each first slider 231 along the X direction may extend beyond the end of the first swing arm body 21 along the X direction. The two first sliders 231 are respectively installed on both sides of the first slide groove 31 of the first fixing frame 30 along the Y direction, and the two first sliders 231 can slide within the first slide groove 31 of the first fixing frame 30. When the electronic device 200 is in the unfolded state, the extension direction of the first slider 231 is inclined to the extension direction (i.e., the X direction) of the first surface 2221 of the first rear cover 2220. The included angle between the first slider 231 and the first surface 2221 of the first rear cover 2220 may be greater than 0° and less than 90°. The shortest distance along the Z direction between the first slider 231 and the third surface 2222 of the first rear cover 2220 gradually increases from the central beam 10 toward the first housing 220.

[0173] Please refer to Figure 7 again. In Figure 7, the double-headed arrows on the left indicate the sliding direction of the first swing arm 20 relative to the first fixed frame 30 and the sliding direction of the first door panel 70 relative to the first housing 220. The double-headed arrows on the right indicate the sliding direction of the second swing arm 40 relative to the second fixed frame 50 and the sliding direction of the second door panel 80 relative to the second housing 230.

[0174] The sliding direction of the first sliding part 23 relative to the first fixing frame 30 is inclined to the first surface 2221 of the first rear cover 2220 (i.e., the X direction in FIG7). The angle between the sliding direction of the first sliding part 23 relative to the first fixing frame 30 and the first surface 2221 of the first rear cover 2220 is greater than 0° and less than 90°.

[0175] Understandably, in the fully unfolded state, the end of the first door panel 70 closest to the middle door panel 60 is higher than the third surface 2222 of the first rear cover 2220, while the end of the first door panel 70 furthest from the middle door panel 60 is lower than the third surface 2222 of the first rear cover. Therefore, in the fully unfolded state, the main body of the first door panel 70 is tilted. Since the first door panel 70 is fixedly connected to the first swing arm 20, the opening and closing action of the first door panel 70 requires the first swing arm 20 to drive it, and the sliding direction of the first swing arm 20 relative to the first fixed frame 30 must adapt to the tilted shape of the first door panel 70.

[0176] Therefore, the sliding direction of the first swing arm 20 is adapted to the tilting direction of the first door panel 70 and is set to tilt sliding. That is, the sliding direction of the first swing arm 20 relative to the first fixed frame 30 is tilted to the first surface 2221 of the first rear cover 2220. This can ensure that the opening and closing action of the first door panel 70 is smooth and easy, thereby ensuring that the folding of the rotating mechanism 100 is also smooth and easy, and avoiding interference between the various structures.

[0177] It should be noted that in order to ensure that the flexible display screen 210 remains the same length during the unfolding and folding of the whole machine, the rotation center line of the first swing arm 20 and the middle beam 10 needs to be adjusted. The specific position of the rotation center line of the first swing arm 20 and the middle beam 10 can be determined by the requirement of the flexible display screen 210 to remain the same length, and can be as close as possible to the middle outer surface 61 of the middle beam 10.

[0178] When the user folds the first housing 220, the first housing 220 drives the first fixed frame 30 to rotate. The first fixed frame 30 then drives the first swing arm 20 to slide within the first sliding groove 31, thereby achieving linkage between the first fixed frame 30 and the first swing arm 20, allowing the first swing arm 20 to rotate relative to the center beam 10. In other words, the first fixed frame 30 can rotate relative to the center beam 10, and drive the first swing arm 20 to rotate relative to the center beam 10, forming a rotation chain of "first fixed frame 30 - first swing arm 20 - center beam 10", enabling the rotating mechanism 100 to perform smooth and fluid rotational movements.

[0179] Referring to Figures 19, 20a, and 20b, one end of the second swing arm 40 is rotatably connected to the center beam 10, and the other end is slidably connected to the second fixed frame 50. When the second housing 230 rotates relative to the center beam 10, the second housing 230 drives the second fixed frame 50 to rotate relative to the center beam 10. The second swing arm 40 can be driven to rotate relative to the center beam 10 and slide relative to the second fixed frame 50 through the rotation of the second fixed frame 50 relative to the center beam 10. Specifically, the second swing arm 40 may include a second swing arm body 41, a second rotating body 42, and a second sliding part 43.

[0180] The second swing arm body 41 is provided with a second through hole 411 and a second groove 412. The second through hole 411 extends through the second swing arm body 41 along the Z direction and is used to accommodate a damping mechanism (not shown) in the rotation mechanism 100. For example, the first through hole 211 can be used to accommodate the spring and cam assembly of the damping mechanism. The second groove 412 communicates with the second through hole 411 and is recessed from the center of the second swing arm body 41 towards the periphery of the second swing arm body 41. The second groove 412 can be used for the sliding part of the cam assembly of the damping mechanism to slide within it, so as to form a sliding engagement with the cam assembly to form a sliding pair.

[0181] The second rotating body 42 is connected to one end of the second swing arm body 41. The second rotating body 42 is mounted in the second rotating groove 12 of the middle beam 10 and can slide within the second rotating groove 12 of the middle beam 10. It can be understood that the sliding movement of the second rotating body 42 of the second swing arm 40 within the second rotating groove 12 of the middle beam 10 enables the rotational movement of the second swing arm 40 relative to the middle beam 10, thus achieving a rotational connection between the second swing arm 40 and the middle beam 10. For example, the shape of the second rotating body 42 can be arc-shaped.

[0182] The second sliding part 43 is connected to the second swing arm body 41 and is mounted to the second slide groove 51 of the second fixed frame 50. The second sliding part 43 can slide within the second slide groove 51 of the second fixed frame 50. When the electronic device 200 is in the unfolded state, the extension direction of the second sliding part 43 is inclined to the extension direction (i.e., the X direction) of the second surface 2321 of the second rear cover 2320. The included angle between the second sliding part 43 and the second surface 2321 of the second rear cover 2320 can be greater than 0° and less than 90°. The shortest distance along the Z direction between the second sliding part 43 and the fourth surface 2322 of the second rear cover 2320 gradually increases from the central beam 10 towards the second housing 230.

[0183] Specifically, the second sliding part 43 may include two second sliders 431, which are located on both sides of the second swing arm body 41 and are arranged opposite each other along the Y direction. One end of each second slider 431 along the X direction may extend beyond one end of the second swing arm body 41 along the X direction. The two second sliders 431 are respectively mounted to the two sides of the second slide groove 51 of the second fixing frame 50 along the Y direction, and the two second sliders 431 can slide within the second slide groove 51 of the second fixing frame 50. When the electronic device 200 is in the unfolded state, the extending direction of the second slider 431 is inclined to the extending direction (i.e., the X direction) of the second surface 2321 of the second rear cover 2320. The included angle between the second slider 431 and the second surface 2321 of the second rear cover 2320 may be greater than 0° and less than 90°. The shortest distance along the Z direction between the second slider 431 and the second surface 2321 of the second rear cover 2320 gradually increases from the central beam 10 toward the second housing 230.

[0184] Please refer to Figure 7 again. The sliding direction of the second sliding part 43 relative to the second fixing frame 50 is inclined to the second surface 2321 (i.e., the X direction) of the second rear cover 2320. The angle between the sliding direction of the second sliding part 43 relative to the second fixing frame 50 and the second surface 2321 of the second rear cover 2320 is greater than 0° and less than 90°.

[0185] Understandably, in the fully unfolded state, the end of the second door panel 80 closest to the middle door panel 60 is higher than the fourth surface 2322 of the second rear cover 2320, while the end of the second door panel 80 furthest from the middle door panel 60 is lower than the fourth surface 2322 of the second rear cover 2320. Therefore, in the fully unfolded state, the main body of the second door panel 80 is tilted. Furthermore, since the second door panel 80 is fixedly connected to the second swing arm 40, the opening and closing action of the second door panel 80 requires the second swing arm 40 to drive it. The sliding direction of the second swing arm 40 relative to the second fixed frame 50 must adapt to the tilted shape of the second door panel 80.

[0186] Therefore, the sliding direction of the second swing arm 40 is adapted to the tilting direction of the second door panel 80 and is set to tilt sliding. That is, the sliding direction of the second swing arm 40 relative to the second fixed frame 50 is tilted to the second surface 2321 of the second rear cover 2320. This can ensure that the opening and closing action of the second door panel 80 can be smooth and easy, thereby ensuring that the folding of the rotating mechanism 100 can also be smooth and easy, and avoiding interference between the various structures.

[0187] It should be noted that in order to ensure that the flexible display screen 210 remains the same length during the unfolding and folding of the whole machine, the rotation center line of the second swing arm 40 and the middle beam 10 needs to be adjusted. The specific position of the rotation center line of the second swing arm 40 and the middle beam 10 can be determined by the requirement of the flexible display screen 210 to remain the same length, and can be as close as possible to the middle outer surface 61 of the middle beam 10.

[0188] When the user folds the second housing 230, the second housing 230 drives the second fixed frame 50 to rotate. The second fixed frame 50 then drives the second swing arm 40 to slide within the second slide groove 51, thereby achieving linkage between the second fixed frame 50 and the second swing arm 40, allowing the second swing arm 40 to rotate relative to the center beam 10. In other words, the second fixed frame 50 can rotate relative to the center beam 10, and drive the second swing arm 40 to rotate relative to the center beam 10, forming a rotation chain of "second fixed frame 50 - second swing arm 40 - center beam 10", enabling the rotation mechanism 100 to perform smooth and fluid rotational movements.

[0189] Please refer to Figures 21a and 21b. Figure 21a is a structural schematic diagram of a portion of the first door panel 70 and the second door panel 80 of the rotating mechanism 100 shown in Figure 5 from one angle. Figure 21b is a structural schematic diagram of a portion of the first door panel 70 and the second door panel 80 of the rotating mechanism 100 shown in Figure 5 from another angle.

[0190] The first door panel 70 and the second door panel 80 are located on both sides of the middle door panel 60 along the X direction. The first door panel 70 and the second door panel 80 can serve as two other decorative exterior parts in the outward-folding electronic device 200, in addition to the middle door panel 60, and cooperate with the middle door panel 60 to shield the components inside the rotating mechanism 100.

[0191] The first door panel 70 is fixedly connected to the first swing arm 20 and slidably connected to the first fixing frame 30 and the first housing 220. It can be understood that, since the first door panel 70 is fixedly connected to the first swing arm 20 and slidably connected to the first fixing frame 30 and the first housing 220, when the user folds the first housing 220, the first housing 220 drives the first fixing frame 30 to rotate, causing the first fixing frame 30 to rotate relative to the center beam 10 and slide relative to the first door panel 70. The first swing arm 20 is driven to rotate by the first fixing frame 30, thereby driving the first door panel 70 to rotate, realizing the rotational movement of the first door panel 70 relative to the middle door panel 60 and the sliding movement of the first door panel 70 relative to the first housing 220. In other words, the first fixed frame 30 can rotate relative to the middle beam 10, and drive the first swing arm 20 to rotate relative to the middle beam 10. The first swing arm 20 can also drive the first door panel 70 to rotate, so as to form a rotation chain of "first fixed frame 30-first swing arm 20-first door panel 70-middle beam 10", so that the rotation mechanism 100 can perform rotational movement smoothly.

[0192] Specifically, the first door panel 70 may include a first plate body 71 and a first connector 72. The first plate body 71 may include a first connecting surface 711, a second connecting surface 712, and a third connecting surface 713, which are sequentially connected to form a first external surface 714 of the first door panel 70. The first external surface 714 of the first plate body 71 faces away from the first rotating part W1. For example, the first plate body 71 may be an arc-shaped plate.

[0193] Specifically, the first connecting surface 711 can extend along the X direction. When the first housing 220 and the second housing 230 are unfolded relative to each other, the first connecting surface 711 can be flush with the middle outer surface 61 of the middle door panel 60. Here, "the first connecting surface 711 can be flush with the middle outer surface 61 of the middle door panel 60" means that the first connecting surface 711 can be coplanar with the middle outer surface 61 of the middle door panel 60, or that the height difference between the first connecting surface 711 and the middle outer surface 61 of the middle door panel 60 is within an allowable error range. It can be understood that by making the first connecting surface 711 of the first door panel 70 flush with the middle outer surface 61 of the middle door panel 60 in the unfolded state, the end of the first door panel 70 near the middle door panel 60 can be raised to be flush with the middle door panel 60, ensuring that the gap between the first door panel 70 and the middle door panel 60 meets the appearance requirements of the electronic device 200, thus improving the overall refinement of the device. When the electronic device 200 is in a folded state, and the first housing 220 and the second housing 230 are closed relative to each other, part of the first connecting surface 711 can contact the third surface 2222 of the first rear cover 2220.

[0194] The second connecting surface 712 can be connected between the first connecting surface 711 and the third connecting surface 713, and extends in a direction inclined to the X direction. The angle between the second connecting surface 712 and the X direction can be greater than 0° and less than 90°. For example, the second connecting surface 712 can be inclined toward the first rear cover 2220 of the first housing 220. It is understood that by extending the second connecting surface 712 in a direction inclined to the X direction, it can not only fully accommodate the state where the end of the first door panel 70 near the middle door panel 60 is raised, but also satisfy the state where the end of the first door panel 70 away from the middle door panel 60 extends into the first housing 220, effectively preventing interference between the first door panel 70 and the rear cover of the first housing 220 during the folding and unfolding of the electronic device 200, and enabling the first door panel 70 to follow the opening and closing movement of the first swing arm 20 more smoothly, easily and stably. When the electronic device 200 is in an intermediate state, as the first housing 220 and the second housing 230 gradually move closer or further apart, part of the second connecting surface 712 can contact the third surface 2222 of the first rear cover 2220.

[0195] The third connecting surface 713 can extend along the X direction and be spaced apart from the first connecting surface 711 in the opposite direction of the Z direction. When the first housing 220 and the second housing 230 are unfolded relative to each other, the third connecting surface 713 can be located inside the first housing 220. For example, the third connecting surface 713 can be arranged parallel to the first connecting surface 711. It is understood that by making the third connecting surface 713 and the first connecting surface 711 spaced apart in the Z direction, the end of the first door panel 70 near the middle door panel 60 and the end away from the middle door panel 60 can have a height difference in the Z direction. This not only fully adapts to the structural form in which the middle door panel 60 and the first rear cover 2220 are arranged in the same layer when the whole machine is unfolded, but also ensures good reliability in terms of gap control between the first door panel 70 and the middle door panel 60 and connection relationship with the first housing 220 during the folding and unfolding of the electronic device 200. When the electronic device 200 is in the unfolded state, and the first housing 220 and the second housing 230 are unfolded relative to each other, a portion of the third connecting surface 713 can contact the third surface 2222 of the first rear cover 2220.

[0196] The first plate 71 may be provided with a third sliding groove 715. The third sliding groove 715 may be located at the end of the first plate 71 along the Y direction. The third sliding groove 715 is used for the first sliding body 32 of the first fixing frame 30 to be installed therein, so as to realize the sliding connection between the first door panel 70 and the first fixing frame 30.

[0197] Please refer to Figures 21a, 21b, 22 and 23. Figure 22 is a partial structural diagram of the first door panel 70 and the first swing arm 20 assembled with the second door panel 80 and the second swing arm 40 of the rotating mechanism 100 shown in Figure 5. Figure 23 is a partial cross-sectional diagram obtained by cutting along the section line CC shown in Figure 4.

[0198] The first connector 72 is fixedly connected to the surface of the first plate 71 facing the first swing arm 20, and is also fixedly connected to the first swing arm 20. For example, the material of the first connector 72 can be titanium alloy or stainless steel. The first plate 71 and the first connector 72 can be an integral structure formed by integral molding, or an integral structure formed by assembly methods such as welding or bonding, or a separate structure. The forming method of the first door panel 70 can be selected according to the actual application requirements of the first door panel 70, and there are no strict limitations. The following description will use a separate structure for the first plate 71 and the first connector 72 as an example, but it should be understood that this is not a limitation.

[0199] The first connector 72 may include a first connecting body 721 and a first extension 722. The first connecting body 721 includes a first surface 7211 and a second surface 7212 disposed opposite to each other. The first surface 7211 is the surface of the first connecting body 721 facing the first plate 71, and the second surface 7212 is the surface of the first connecting body 721 facing the first swing arm 20. The first extension 722 is bent and connected to one side of the first connecting body 721 and extends in a direction away from the first connecting body 721. The first extension 722 protrudes relative to the second surface 7212 of the first connecting body 721.

[0200] When the first door panel 70 is fixedly connected to the first swing arm 20, the first plate 71 covers the first swing arm 20, and the first connecting body 721 of the first connector 72 is located between the first swing arm 20 and the first plate 71. The first extension 722 of the first connector 72 is located outside the first swing arm 20 and extends in a direction away from the first connecting body 721.

[0201] Please refer to Figures 7, 24 and 25. Figure 24 is a partial cross-sectional view obtained by cutting along the cutting line DD shown in Figure 3, and Figure 25 is a partial cross-sectional view obtained by cutting along the cutting line EE shown in Figure 2.

[0202] The sliding direction of the first door panel 70 relative to the first housing 220 is inclined to the first surface 2221 of the first rear cover 2220. The angle between the sliding direction of the first door panel 70 relative to the first housing 220 and the first surface 2221 of the first rear cover 2220 is greater than 0° and less than 90°. The sliding direction of the first door panel 70 relative to the first housing 220 can be approximately the same as the sliding direction of the first swing arm 20 relative to the first fixed frame 30.

[0203] It is understandable that, since the first door panel 70 is fixedly connected to the first swing arm 20, when the first swing arm 20 slides relative to the first fixed frame 30, it will cause the first door panel 70 to slide relative to the first housing 220, thereby keeping the first door panel 70 and the first swing arm 20 linked. By setting the sliding direction of the first door panel 70 relative to the first housing 220 at an angle to the first surface 2221 of the first rear cover 2220, the sliding direction of the first door panel 70 relative to the first housing 220 can be kept consistent with the sliding direction of the first swing arm 20 relative to the first fixed frame 30 during the folding and unfolding process of the rotating mechanism 100. That is, when the first swing arm 20 slides along an oblique line relative to the first surface 2221 of the first housing 220, the first door panel 70 also slides along an oblique line relative to the first surface 2221 of the first housing 220, thereby optimizing the movement trajectory of the first door panel 70 and avoiding interference with the first rear cover 2220.

[0204] A first receiving groove H1 can be formed between the first fixing frame 30 and the first rear cover 2220 of the first housing 220. The first door panel 70 can slide within the first receiving groove H1. The cross-sectional width of the first receiving groove H1 along the Z direction gradually increases from the middle beam 10 towards the first housing 220. With this configuration, the first receiving groove H1 can present a trapezoidal groove structure with a gradient in width, which is beneficial to provide a certain amount of movement space for the sliding action of the first door panel 70 relative to the first housing 220, and avoids the problem of rotation jamming caused by interference between the first door panel 70 and the first fixing frame 30 during the sliding process, thus ensuring high reliability.

[0205] Please refer again to Figures 21a and 21b. The second door panel 80 is fixedly connected to the second swing arm 40 and slidably connected to the second fixing frame 50 and the second housing 230. It can be understood that because the second door panel 80 is fixedly connected to the second swing arm 40 and slidably connected to the second fixing frame 50 and the second housing 230, when the user folds the second housing 230, the second housing 230 drives the second fixing frame 50 to rotate, causing the second fixing frame 50 to rotate relative to the center beam 10 and slide relative to the second door panel 80. The second swing arm 40 is driven to rotate by the second fixing frame 50, thereby driving the second door panel 80 to rotate, realizing the rotational movement of the second door panel 80 relative to the middle door panel 60 and the sliding movement of the second door panel 80 relative to the second housing 230. In other words, the second fixed frame 50 can rotate relative to the middle beam 10, and drive the second swing arm 40 to rotate relative to the middle beam 10. The second swing arm 40 can also drive the second door panel 80 to rotate, so as to form a rotation chain of "second fixed frame 50-second swing arm 40-second door panel 80-middle beam 10", so that the rotating mechanism 100 can rotate smoothly.

[0206] Specifically, the second door panel 80 may include a second plate body 81 and a second connector 82. The second plate body 81 may include a fourth connecting surface 811, a fifth connecting surface 812, and a sixth connecting surface 813, which are sequentially connected to form a second external surface 814 of the second plate body 81. The second external surface 814 of the second plate body 81 faces away from the second rotating portion W2. For example, the second plate body 81 may be an arc-shaped plate.

[0207] Specifically, the fourth connecting surface 811 can extend along the X direction. When the first housing 220 and the second housing 230 are unfolded relative to each other, the fourth connecting surface 811 can be flush with the middle outer surface 61 of the middle door panel 60. Here, "the fourth connecting surface 811 can be flush with the middle outer surface 61 of the middle door panel 60" means that the fourth connecting surface 811 can be coplanar with the middle outer surface 61 of the middle door panel 60, or that the height difference between the fourth connecting surface 811 and the middle outer surface 61 of the middle door panel 60 is within an allowable error range. It can be understood that by making the fourth connecting surface 811 of the second door panel 80 flush with the middle outer surface 61 of the middle door panel 60 in the unfolded state, the end of the second door panel 80 near the middle door panel 60 can be raised to be flush with the middle door panel 60, ensuring that the gap between the second door panel 80 and the middle door panel 60 meets the appearance requirements of the electronic device 200, thus improving the overall refinement of the device. When the electronic device 200 is in a folded state, and the first housing 220 and the second housing 230 are closed relative to each other, part of the fourth connecting surface 811 can contact the fourth surface 2322 of the second rear cover 2320.

[0208] The fifth connecting surface 812 can be connected between the fourth connecting surface 811 and the sixth connecting surface 813, and extends in a direction inclined to the X direction. The angle between the fifth connecting surface 812 and the X direction can be greater than 0° and less than 90°. For example, the fifth connecting surface 812 can be inclined toward the second rear cover 2320 of the second housing 230. It is understood that by extending the fifth connecting surface 812 in a direction inclined to the X direction, it can not only fully accommodate the state in which the end of the second door panel 80 near the middle door panel 60 is raised, but also satisfy the state in which the end of the second door panel 80 away from the middle door panel 60 extends into the second housing 230, effectively preventing the problem of interference between the second door panel 80 and the rear cover of the second housing 230 during the folding and unfolding of the electronic device 200, and enabling the second door panel 80 to follow the opening and closing movement of the second swing arm 40 more smoothly, easily and stably. When the electronic device 200 is in an intermediate state, as the first housing 220 and the second housing 230 gradually move closer to or further away from each other, part of the fifth connecting surface 812 can contact the fourth surface 2322 of the second rear cover 2320.

[0209] The sixth connecting surface 813 can be spaced apart from the fourth connecting surface 811 in the opposite direction of the Z-direction. When the second housing 230 and the second housing 230 are unfolded relative to each other, the sixth connecting surface 813 can be located inside the second housing 230. It can be understood that by making the fourth connecting surface 811 and the sixth connecting surface 813 spaced apart in the Z-direction, the end of the second door panel 80 near the middle door panel 60 and the end away from the middle door panel 60 can have a height difference in the Z-direction. This not only fully adapts to the structural form of the middle door panel 60 and the second rear cover 2320 being set in the same layer when the whole machine is unfolded, but also ensures the gap control between the second door panel 80 and the middle door panel 60 and the connection relationship between the second door panel 80 and the second housing 230 during the folding and unfolding of the electronic device 200, resulting in good reliability. When the electronic device 200 is in the unfolded state, and the first housing 220 and the second housing 230 are unfolded relative to each other, part of the sixth connecting surface 813 can contact the fourth surface 2322 of the second rear cover 2320.

[0210] The second plate 81 may be provided with a fourth sliding groove 815. The fourth sliding groove 815 may be located at the end of the second plate 81 along the Y direction. The fourth sliding groove 815 is used for the second sliding body 52 of the second fixing frame 50 to be installed therein, so as to realize the sliding connection between the second door panel 80 and the second fixing frame 50.

[0211] Referring to Figures 21a, 21b, 22, and 23, the second connector 82 is fixedly connected to the surface of the second plate 81 facing the second swing arm 40, and is also fixedly connected to the second swing arm 40. For example, the material of the second connector 82 can be titanium alloy or stainless steel. The second plate 81 and the second connector 82 can be an integral structure formed by integral molding, or an integral structure formed by assembly methods such as welding or bonding, or a separate structure. The forming method of the second door panel 80 can be selected according to the actual application requirements of the second door panel 80, and there are no strict limitations. The following description will use a separate structure for the second plate 81 and the second connector 82 as an example, but it should be understood that this is not a limitation.

[0212] The second connector 82 may include a second connecting body 821 and a second extension 822. The second connecting body 821 includes a third surface 8211 and a fourth surface 8212 disposed opposite to each other. The third surface 8211 is the surface of the second connecting body 821 facing the second plate 81, and the fourth surface 8212 is the surface of the second connecting body 821 facing the second swing arm 40. The second extension 822 is bent and connected to one side of the second connecting body 821 and extends in a direction away from the second connecting body 821. The second extension 822 protrudes relative to the fourth surface 8212 of the second connecting body 821.

[0213] When the second door panel 80 is fixedly connected to the second swing arm 40, the second plate 81 covers the second swing arm 40, the second connecting body 821 of the second connector 82 is located between the second swing arm 40 and the second plate 81, and the second extension 822 of the second connector 82 is located outside the second swing arm 40 and extends in a direction away from the second connecting body 821.

[0214] Referring to Figures 7, 24, and 25, the sliding direction of the second door panel 80 relative to the second housing 230 is inclined to the second surface 2321 of the second rear cover 2320. The angle between the sliding direction of the second door panel 80 relative to the second housing 230 and the second surface 2321 of the second rear cover 2320 is greater than 0° and less than 90°. The sliding direction of the second door panel 80 relative to the second housing 230 can be approximately the same as the sliding direction of the second swing arm 40 relative to the second fixed frame 50.

[0215] It is understandable that, since the second door panel 80 is fixedly connected to the second swing arm 40, when the second swing arm 40 slides relative to the second fixed frame 50, it will cause the second door panel 80 to slide relative to the second housing 230, thereby keeping the second door panel 80 and the second swing arm 40 linked. By setting the sliding direction of the second door panel 80 relative to the second housing 230 at an angle to the second surface 2321 of the second rear cover 2320, the sliding direction of the second door panel 80 relative to the second housing 230 can be kept consistent with the sliding direction of the second swing arm 40 relative to the second fixed frame 50 during the folding and unfolding process of the rotating mechanism 100. That is, when the second swing arm 40 slides along an oblique line relative to the second surface 2321 of the second housing 230, the second door panel 80 also slides along an oblique line relative to the second surface 2321 of the second housing 230, thereby optimizing the movement trajectory of the second door panel 80 and avoiding interference with the second rear cover 2320.

[0216] A second receiving H2 can be formed between the second fixing frame 50 and the second rear cover 2320 of the second housing 230. The second door panel 80 can slide within the second receiving H2. The cross-sectional width of the second receiving H2 along the Z direction gradually increases from the middle beam 10 towards the second housing 230. With this configuration, the second receiving H2 can present a trapezoidal groove structure with a gradient width, which is beneficial for providing a certain amount of movement space for the sliding action of the second door panel 80 relative to the second housing 230, avoiding the problem of rotation jamming caused by interference between the second door panel 80 and the second fixing frame 50 during the sliding process, thus ensuring high reliability.

[0217] Based on the above description, it should be understood that during the process of the electronic device 200 rotating from the unfolded state to the folded state, the first housing 220 and the second housing 230 rotate toward each other, that is, the first housing 220 rotates clockwise and the second housing 230 rotates counterclockwise.

[0218] When the first housing 220 rotates clockwise, it drives the first fixed frame 30 to rotate clockwise, thereby driving the first swing arm 20 to rotate clockwise. When the first swing arm 20 rotates clockwise, it drives the first door panel 70 to rotate clockwise and move away from the middle door panel 60, that is, it drives the first door panel 70 to move towards the first housing 220.

[0219] When the second housing 230 rotates counterclockwise, it drives the second fixed frame 50 to rotate counterclockwise, thereby driving the second swing arm 40 to rotate counterclockwise. When the second swing arm 40 rotates counterclockwise, it drives the second door panel 80 to rotate counterclockwise and move away from the middle door panel 60, that is, it drives the second door panel 80 to move towards the second housing 230.

[0220] To further understand the embodiments of this application, please refer to Figures 7 and 26 together. Figure 26 is a cross-sectional schematic diagram of a portion of the electronic device 200a in the deployed state in the comparative embodiment. In Figure 26, the double-headed arrows on the left indicate the sliding direction of the first swing arm 20a relative to the first fixed frame 30a and the sliding direction of the first door panel 70a relative to the first housing 220a. The double-headed arrows on the right indicate the sliding direction of the second swing arm 40a relative to the second fixed frame 50a and the sliding direction of the second door panel 80a relative to the second housing 230a.

[0221] The differences between the comparative embodiment shown in Figure 26 and the embodiment shown in Figure 7 include at least the following:

[0222] 1. In the comparative embodiment shown in Figure 26, when the electronic device 200a is in the unfolded state, the first housing 220a and the second housing 230a are unfolded relative to each other. The middle door plate 60a of the rotating mechanism 100a is set at a different layer from the first rear cover 2220a of the first housing 220a and the second rear cover 2320a of the second housing 230a. That is, the first rear cover 2220a of the first housing 220a and the second rear cover 2320a of the second housing 230a are arranged sequentially with the middle door plate 60a of the rotating mechanism 100a in the Z direction.

[0223] As shown in Figure 7, the embodiments of this application, by having at least a portion of the middle door plate 60 of the rotating mechanism 100 disposed in the same layer as the first rear cover 2220 of the first housing 220 and / or the second rear cover 2320 of the second housing 230, can increase the thickness of the middle beam 10 compared to the thickness of the middle beam 10a in the comparative embodiment, thereby improving the strength of the rotating mechanism 100.

[0224] Second: In the comparative embodiment shown in Figure 26, when the electronic device 200a is in the unfolded state, the first housing 220a and the second housing 230a are unfolded relative to each other, and the middle appearance surface 61a of the middle door panel 60a is lower than the third surface 2222a of the first back cover 2220 and / or the fourth surface 2322a of the second back cover 2320.

[0225] As shown in Figure 7, in the embodiment of this application, when the electronic device 200a is in the unfolded state, the first housing 220a and the second housing 230a are unfolded relative to each other. By making the middle outer surface 61 of the middle door panel 60 higher than the third surface 2222a of the first rear cover 2220 and / or the fourth surface 2322a of the second rear cover 2320, the thickness of the middle beam 10 can be further increased compared to the thickness of the middle beam 10a in the comparative embodiment. When the middle outer surface 61 of the middle door panel 60 is flush with the first surface 2221 of the first rear cover 2220 and / or the second surface 2321 of the second rear cover 2320, the increase in thickness of the middle beam 10 compared to the thickness of the middle beam 10a in the comparative embodiment is maximized, thereby greatly improving the strength of the rotating mechanism 100.

[0226] Thirdly, in the comparative embodiment shown in Figure 26, when the electronic device 200a is in the unfolded state, the first housing 220a and the second housing 230a unfold relative to each other. The first outer surface 714a of the first door panel 70a is lower than the third surface 2222a of the first rear cover 2220 and is flush with the middle outer surface 61 of the middle door panel 60. The second outer surface 814a of the second door panel 80a is lower than the fourth surface 2322a of the second rear cover 2320 and is flush with the middle outer surface 61 of the middle door panel 60.

[0227] As shown in Figure 7, in the embodiment of this application, when the electronic device 200 is in the unfolded state, the first housing 220 and the second housing 230 are unfolded relative to each other. A portion of the first outer surface 714 of the first door panel 70 is higher than the third surface 2222 of the first rear cover 2220 and flush with the middle outer surface 61 of the middle door panel 60. A portion of the second outer surface 814 of the second door panel 80 is higher than the fourth surface 2322 of the second rear cover 2320 and flush with the middle outer surface 61 of the middle door panel 60. This allows the ends of the first door panel 70 and the second door panel 80 near the middle door panel 60 to be raised to be flush with the middle door panel 60 relative to the first door panel 70a and the second door panel 80a in the comparative embodiment. This ensures that the gaps between the first door panel 70 and the middle door panel 60, and between the second door panel 80 and the middle door panel 60, meet the appearance requirements of the electronic device 200, thus improving the overall refinement of the device.

[0228] Fourthly, in the comparative embodiment shown in Figure 26, the sliding direction of the first door panel 70a relative to the first housing 220a, and the sliding direction of the first swing arm 20a relative to the first fixing frame 30a, are both parallel to the first surface 2221a (i.e., the X direction) of the first rear cover 2220a. The sliding direction of the second door panel 80a relative to the second housing 230a, and the sliding direction of the second swing arm 40a relative to the second fixing frame 50a, are both parallel to the second surface 2321a (i.e., the X direction) of the second rear cover 2320a. The first groove 31a of the first fixing frame 30a extends parallel to the first surface 2221a (i.e., the X direction) of the first rear cover 2220a, and the first groove 31a is used for the first swing arm 20a to slide within it. The second slide groove 51a of the second fixed bracket 50a extends in a direction parallel to the second surface 2321a (i.e., the X direction) of the second rear cover 2320a, and the second slide groove 51a is used for the second swing arm 40a to slide within it.

[0229] As shown in Figure 7, in this embodiment of the application, the sliding direction of the first door panel 70 relative to the first housing 220 and the sliding direction of the first swing arm 20 relative to the first fixing frame 30 are both inclined to the first surface 2221 (i.e., the X direction) of the first rear cover 2220. This ensures that the sliding direction of the first door panel 70 relative to the first housing 220 and the sliding direction of the first swing arm 20 relative to the first fixing frame 30 remain consistent during the folding and unfolding process of the rotating mechanism 100. That is, when the first swing arm 20 slides along an oblique line relative to the first surface 2221 of the first housing 220, the first door panel 70 also slides along an oblique line relative to the first surface 2221 of the first housing 220, thereby optimizing the movement trajectory of the first door panel 70 and avoiding interference with the first rear cover 2220.

[0230] By setting the sliding direction of the second door panel 80 relative to the second housing 230 and the sliding direction of the second swing arm 40 relative to the second fixed frame 50 to be inclined with the second surface 2321 (i.e., the X direction) of the second rear cover 2320, the sliding direction of the second door panel 80 relative to the second housing 230 and the sliding direction of the second swing arm 40 relative to the second fixed frame 50 can be kept consistent during the folding and unfolding of the rotating mechanism 100. That is, when the second swing arm 40 slides along the oblique line with the second surface 2321 of the second housing 230, the second door panel 80 also slides along the oblique line with the second surface 2321 of the second housing 230, thereby optimizing the movement trajectory of the second door panel 80 and avoiding interference with the second rear cover 2320.

[0231] In this embodiment, the first slide groove 31 of the first fixing frame 30 extends in an inclined direction to the first surface 2221 (i.e., the X direction) of the first rear cover 2220, and the first slide groove 31 is used for the first swing arm 20 to slide within it. The second slide groove 51 of the second fixing frame 50 extends in a parallel direction to the second surface 2321 (i.e., the X direction) of the second rear cover 2320, and the second slide groove 51 is used for the second swing arm 40 to slide within it.

[0232] It should be noted that the differences between the comparative embodiments shown in Figure 26 and the embodiments shown in Figure 7 are merely illustrative descriptions to facilitate understanding of the embodiments of this application. The differences between the comparative embodiments shown in Figure 26 and the embodiments shown in Figure 7 are not limited to the above points and will not be elaborated here.

[0233] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An electronic device, characterized in that, The electronic device includes a first housing, a second housing, and a rotating mechanism. The first housing includes a first rear cover, the second housing includes a second rear cover, and the rotating mechanism includes a central beam, a first rotating part, a second rotating part, and a door panel assembly. The first rotating part and the second rotating part are respectively located on both sides of the width direction of the middle beam. The first rotating part is rotatably connected to the middle beam, and the end of the first rotating part away from the middle beam extends into the first housing and is fixedly connected to the first housing. The second rotating part is rotatably connected to the middle beam, and the end of the second rotating part away from the middle beam extends into the second housing and is fixedly connected to the second housing. The door panel assembly includes a middle door panel, a first door panel, and a second door panel. The middle door panel is fixedly connected to the central beam. The first door panel is fixedly connected to the first rotating part. One end of the first door panel away from the middle door panel is located inside the first housing. The first door panel is also slidably connected to the first housing. The second door panel is fixedly connected to the second rotating part. One end of the second door panel away from the middle door panel is located inside the second housing. The second door panel is also slidably connected to the second housing. When the first housing and the second housing are unfolded relative to each other, at least part of the middle door panel is disposed in the same layer as the first rear cover and the second rear cover.

2. The electronic device as claimed in claim 1, characterized in that, The first back cover includes a first surface, the second back cover includes a second surface, and the surface of the middle door panel facing away from the middle beam is the middle appearance surface of the middle door panel; When the first housing and the second housing are unfolded relative to each other, the intermediate exterior surface is flush with the first surface and / or the second surface.

3. The electronic device as described in claim 2, characterized in that, The first rear cover further includes a third surface, which is disposed opposite to the first surface in the thickness direction of the first rear cover; The second rear cover also includes a fourth surface, which is disposed opposite to the second surface in the thickness direction of the second rear cover; The surface of the central beam facing the middle door panel is flush with the third surface and / or the fourth surface.

4. The electronic device as described in claim 2 or 3, characterized in that, The sliding direction of the first door panel relative to the first housing is inclined to the first surface; The sliding direction of the second door panel relative to the second housing is inclined to the second surface.

5. The electronic device as described in claim 2 or 3, characterized in that, The first rotating part includes a first swing arm and a first fixed frame. The first fixed frame is fixedly connected to the first housing. The first swing arm is fixedly connected to the first door panel. One end of the first swing arm is rotatably connected to the middle beam. The other end of the first swing arm is slidably connected to the first fixed frame. The sliding direction of the first swing arm relative to the first fixed frame is inclined to the first surface. The second rotating part includes a second swing arm and a second fixed frame. The second fixed frame is fixedly connected to the second housing, and the second swing arm is fixedly connected to the second door panel. One end of the second swing arm is rotatably connected to the middle beam, and the other end of the second swing arm is slidably connected to the second fixed frame. The sliding direction of the second swing arm relative to the second fixed frame is inclined to the second surface.

6. The electronic device as claimed in claim 5, characterized in that, A first receiving groove is formed between the first fixing frame and the first rear cover. The first door panel can slide in the first receiving groove. The cross-sectional width of the first receiving groove along the thickness direction of the electronic device gradually increases from the middle beam towards the first housing. A second receiving groove is formed between the second fixing frame and the second rear cover. The second door panel can slide in the second receiving groove. The cross-sectional width of the second receiving groove along the thickness direction of the electronic device gradually increases from the middle beam towards the second housing.

7. The electronic device according to any one of claims 2-6, characterized in that, The first door panel includes a first outer surface, which faces away from the first rotating part. When the first housing and the second housing are unfolded relative to each other, part of the first outer surface is flush with the middle outer surface. The second door panel includes a second outer surface, which faces away from the second rotating part. When the first housing and the second housing are unfolded relative to each other, part of the second outer surface is flush with the middle outer surface.

8. The electronic device according to any one of claims 1-7, characterized in that, The middle beam includes a middle beam seat and a middle beam cover plate. The middle beam cover plate is connected to one side of the middle beam seat, and the middle door panel is connected to the surface of the middle beam cover plate opposite to the middle beam seat. The middle door panel and the middle beam cover plate are connected to form an integrated structure.

9. The electronic device as claimed in claim 8, characterized in that, The middle beam also includes a locking member, which passes through the middle beam seat and the middle beam cover plate and is fixedly connected to the middle beam seat and the middle beam cover plate. A portion of the locking member is exposed on the surface of the middle beam seat away from the middle beam cover plate.

10. The electronic device as claimed in claim 9, characterized in that, The rotating mechanism also includes a screen under-screen support member, which is connected to the surface of the middle beam seat opposite to the middle beam cover plate and covers the locking member.

11. The electronic device according to any one of claims 1-7, characterized in that, The central beam is a one-piece structure.

12. The electronic device according to any one of claims 1-11, characterized in that, The electronic device also includes a flexible display screen, which is connected to the first housing, the second housing, and the rotating mechanism, and is located on the side of the central beam opposite to the middle door panel.

Images