Rotating mechanisms and electronic equipment

Abstract

This application provides a rotating mechanism and an electronic device. The rotating mechanism includes a first housing connecting rod, a second housing connecting rod, a main shaft, a first rotating door plate, a second rotating door plate, and door plate swing arms. Door plate swing arms are fixedly connected to the first and second rotating door plates respectively. The door plate swing arms are rotatably connected to the main shaft and movably connected to the first and second housings. In their flattened state, the first and second rotating door plates support the bent portion of a flexible display screen. In their folded state, the first and second rotating door plates form a screen-accommodating space for the bent portion of the flexible display screen. This application improves the motion accuracy of the first and second rotating door plates, ensuring the stability and reliability of the electronic device.

Description

[0001] This application is a divisional application. The original application has the application number 202280003112.5 and the original application date is June 30, 2022. The entire contents of the original application are incorporated herein by reference. Technical Field

[0002] Embodiments of this application relate to the field of electronic devices, and more specifically, to a rotating mechanism for an electronic device, and an electronic device including the rotating mechanism. Background Technology

[0003] With the development of flexible screen technology, foldable electronic devices based on flexible screens have become a technological hotspot in the industry. For example, foldable screen phones, as a type of foldable electronic device, are gaining increasing popularity among users. A typical foldable screen phone includes a folding mechanism and a flexible screen fixed to the folding mechanism. The folding mechanism generally includes a rotating mechanism and housings fixed to both sides of the rotating mechanism. The two sides of the flexible screen are respectively fixed to their respective housings, and the middle part of the flexible screen is located at a position corresponding to the rotating mechanism. The rotating mechanism can deform to allow the first and second housings to rotate around the rotating mechanism, thus enabling the flexible screen to switch between a flattened and closed state. Conventional rotating mechanisms have complex structures, typically using multi-stage transmissions to achieve the rotation of the two housings; such rotating mechanisms have relatively poor reliability. Summary of the Invention

[0004] Embodiments of this application provide a rotating mechanism and an electronic device designed to solve the aforementioned problems and other potential problems of conventional rotating mechanisms.

[0005] In a first aspect, this application provides a rotating mechanism for connecting between a first housing and a second housing of a folding device for an electronic device, the folding device being used to carry a flexible display screen. The rotating mechanism includes a first rotating door panel, a second rotating door panel, two door panel swing arms, a first housing connecting rod, a second housing connecting rod, and a main shaft. The first rotating door panel and one of the door panel swing arms are fixedly connected and located between the door panel swing arm and the flexible display screen. The second rotating door panel and the other door panel swing arm are fixedly connected and located between the door panel swing arm and the flexible display screen. Both door panel swing arms are rotatably connected to the main shaft. The door panel swing arm fixedly connected to the first rotating door panel is movably connected to the first housing connecting rod, and the door panel swing arm fixedly connected to the second rotating door panel is movably connected to the second housing connecting rod.

[0006] Specifically, the first rotating door panel and the second rotating door panel are used to support the bent portion of the flexible display screen when flattened, and the first rotating door panel and the second rotating door panel are used to form a screen-accommodating space for accommodating the bent portion of the flexible display screen when folded.

[0007] The “active connection” defined in this application can be a rotational connection, a sliding connection, or other connection methods with degrees of freedom. Having degrees of freedom can be understood as: the first rotating door panel and the first housing can generate relative movement during the flattening or folding process, and the second rotating door panel and the second housing can generate relative movement during the flattening or folding process.

[0008] In the embodiments of this application, the first rotating door panel and the second rotating door panel are rotatably connected to the main shaft via door panel swing arms. Since both the first and second rotating door panels are fixedly connected to the door panel swing arms, it can be assumed that during unfolding or folding, both the first and second rotating door panels move synchronously with the door panel swing arms. Therefore, the first and second rotating door panels of the folding device provided in this application can rotate directly relative to the main shaft. The connection between the two rotating door panels and the main shaft belongs to a single-stage transmission architecture, which improves the motion accuracy of the first and second rotating door panels. Moreover, due to the high motion accuracy of the first and second rotating door panels, a stable screen-accommodating space can be provided between the first and second rotating door panels in the folded state of the electronic device. In addition, in the flattened state of the electronic device, the first and second rotating door panels can provide stable support for the bending part of the flexible display screen, improving the reliability of the bending part of the flexible display screen when pressed. Furthermore, due to the single-stage transmission relationship between the first and second rotating door panels and the main shaft, the swaying of the first and second rotating door panels is small when the electronic device is accidentally dropped, thus providing stable protection for the flexible display screen and improving the reliability of the electronic device.

[0009] In one possible implementation, when the rotating mechanism is in a flattened state, at least a portion of the edges of the first rotating door panel and at least a portion of the edges of the second rotating door panel are abutted. This solution defines an implementation of the relationship between the first and second rotating door panels in a flattened state of a two-door panel folding device. By abutting at least a portion of the edges of the first and second rotating door panels, the first and second rotating door panels can provide stable support to the flexible display screen in the flattened state.

[0010] The "connection" defined in this solution can be understood as: the edges of the first rotating door panel and the second rotating door panel contacting each other; or a small gap forming between the edges of the first rotating door panel and the second rotating door panel. This small gap can be a gap formed by factors such as assembly tolerance or design tolerance, and is not for avoiding other structural features. The size of this gap is small and does not affect the support of the flexible display screen; or an overlapping or lapped structure forming between the edges of the first rotating door panel and the second rotating door panel.

[0011] In one possible implementation, the rotating mechanism further includes a synchronous damping element. This synchronous damping element comprises a first transmission link, a second transmission link, and a transmission module rotatably connected to the main shaft. Each of the first and second transmission links includes a sliding end and a rotating end. The rotating ends of the first and second transmission links cooperate with the transmission module. The sliding end of the first transmission link is slidably connected to the first housing link, and the sliding end of the second transmission link is slidably connected to the second housing link. This solution, by including a synchronous damping element in the rotating mechanism, ensures good motion accuracy for both the first and second rotating door panels while also providing the advantage of synchronous movement. It guarantees that the rotation angles of the first and second housing links relative to the main shaft change consistently during relative unfolding or folding, achieving synchronous unfolding or folding. This method results in better symmetry between the folding and unfolding actions of the electronic device, improving the user experience.

[0012] In one possible implementation, when the rotating mechanism is in a flattened state, the mating position of the first and second rotating door panels falls at least partially within the vertical projection range of the transmission module on the first and second rotating door panels. This solution, by defining the positional relationship between the mating position of the first and second rotating door panels and the transmission module, provides a rotating mechanism that eliminates the need for holes or perforations at the mating position of the first and second rotating door panels to avoid the synchronous damping component. This not only results in a simpler structural design but also improves the integrity of the first and second rotating door panels, thereby enhancing the stability of the rotating mechanism in supporting the flexible display screen.

[0013] In one possible implementation, when the rotating mechanism is in a folded state, the rotation center of the rotating end of the first transmission link is located on the side of the first rotating door panel opposite to the second rotating door panel, or on the side of the extension surface of the first rotating door panel opposite to the extension surface of the second rotating door panel; the rotation center of the rotating end of the second transmission link is located on the side of the second rotating door panel opposite to the first rotating door panel, or on the side of the extension surface of the second rotating door panel opposite to the extension surface of the first rotating door panel. This application, by defining the positional relationship between the rotation center of the rotating end of the first transmission link and the first rotating door panel, and the positional relationship between the rotation center of the rotating end of the second transmission link and the second rotating door panel, ensures that the arrangement of the first and second transmission links does not affect the structural integrity of the first and second rotating door panels. That is, it eliminates the need for notches or holes on the first and second rotating door panels to avoid the corresponding transmission links. When unfolded, the first and second rotating door panels can form a complete plate-like structure. This complete plate-like structure can shield the synchronous damping component, providing better support for the flexible display screen and improving the structural stability of the electronic device.

[0014] In one possible implementation, the rotation center of the rotating end of the first transmission link is a first center, and the rotation center of the rotating end of the second transmission link is a second center. When the rotating mechanism is in a folded state, the vertical distance between the first center and the second center is greater than the maximum distance between the first rotating door panel and the second rotating door panel in a first direction, where the first direction is the extension direction of the vertical line connecting the first center and the second center. This solution defines the distance between the rotation centers of the rotating ends of the first and second transmission links. Since the distance between the first and second centers is greater than the maximum distance between the first and second rotating door panels in the first direction, the specific positions of the rotation centers of the rotating ends of the first and second transmission links can be defined. This solution also eliminates the need for notches or holes on the first and second rotating door panels to avoid corresponding transmission links. In a flattened state, the first and second rotating door panels can form a complete plate-like structure. This complete plate-like structure can shield the synchronous damping component, providing better support for the flexible display screen and improving the structural stability of the electronic device.

[0015] In one possible implementation, the first rotating door panel includes a first supporting surface, and the second rotating door panel includes a second supporting surface. When the rotating mechanism is in a folded state, the plane containing the first supporting surface and the plane containing the second supporting surface form a first included angle. The rotation centers of the rotating ends of the first and second transmission links are both located outside the range of the first included angle. This solution achieves a structure that eliminates the need for notches or holes on the first and second rotating door panels to avoid the corresponding transmission links by limiting the rotation centers of the rotating ends of the first and second transmission links to be outside the first included angle. When flattened, the first and second rotating door panels can form a complete plate-like structure. This complete plate-like structure can shield the synchronous damping component, providing better support for the flexible display screen and improving the structural stability of the electronic device.

[0016] In one possible implementation, the transmission module is a gear set structure, which includes multiple meshing gears. The number of gears is even to achieve synchronous movement of the first housing and the second housing during the unfolding or folding process.

[0017] In one possible implementation, the transmission module is a conveyor belt structure with a toothed structure on its outer surface. The transmission module can mesh with the rotating ends of the first and second transmission links. The movement of the conveyor belt drives the rotating ends of the first and second transmission links to rotate, causing them to move synchronously. In one embodiment, a transmission gear can be provided between the conveyor belt and one of the rotating ends to achieve synchronous movement of the first and second housings during the flattening and folding processes.

[0018] In one possible implementation, in the flattened state, a complete, seamless seam is formed at the joint between the first and second rotating door panels. This solution not only provides a consistent appearance for the folding device, resulting in a simple external structure and easier control over manufacturing and assembly costs, but also improves the stability of the first and second rotating door panels in supporting the flexible display screen when the electronic device is in the flattened state.

[0019] In one possible implementation, in the folded state, the rotating end of the first transmission link is located on the side of the first rotating door panel facing the second rotating door panel, and the sliding end of the first transmission link is located on the side of the first rotating door panel away from the second rotating door panel; similarly, the rotating end of the second transmission link is located on the side of the second rotating door panel facing the first rotating door panel, and the sliding end of the second transmission link is located on the side of the second rotating door panel away from the first rotating door panel. This solution provides a specific positional relationship between the transmission links and the corresponding rotating door panels. In the folded state, the rotating and sliding ends of each transmission link are located on opposite sides of the corresponding rotating door panel, requiring notches in the corresponding rotating door panels to accommodate part of the corresponding transmission link structure. This solution contributes to the compactness of the overall structure of the synchronous damping component.

[0020] In one possible implementation, in the folded state, the first rotating door panel and the second rotating door panel form a second included angle, and the rotating ends of both the first and second transmission links are located within the range of the second included angle. This aspect, by defining the relationship between the rotating ends of the first and second transmission links and the second included angle, determines that in the folded state, the rotating ends and sliding ends of each transmission link are located on opposite sides of the corresponding rotating door panel, requiring notches on the corresponding rotating door panels to accommodate part of the corresponding transmission link structure. This solution is beneficial for the compactness of the overall structure of the synchronous damping component. On the other hand, the folding device provided by this solution can provide a larger screen-accommodating space. Specifically, the first rotating door panel is connected to the flexible display screen, the second rotating door panel is connected to the flexible display screen, and the first and second rotating door panels exert a pulling force on the flexible display screen, the direction of which is away from the center of the screen-accommodating space. This solution allows the flexible display screen to form a larger bending space when bent. In other words, this solution makes the radius of curvature of the bent part of the flexible display screen larger than the radius of curvature in the natural bending state. This solution helps to ensure the lifespan of the flexible display screen and enables electronic devices to adapt to different usage environments. For example, in harsh environments with high temperature and high humidity, the flexible display screen of the electronic device still has a good lifespan.

[0021] In one possible implementation, the rotating mechanism further includes a lifting plate connected to the main shaft and movable relative to the main shaft in a direction away from or close to it. In the folded state, the lifting plate, together with the first and second rotating door panels, forms the screen-accommodating space. The lifting plate is closer to the main shaft in the folded state than in the flattened state. In this embodiment, in the flattened state of the electronic device, the lifting plate can be spliced ​​with the first and second rotating door panels. That is, the lifting plate can at least partially close the cavity formed by the first and second rotating door panels and is substantially flush with them. In this way, the lifting plate and rotating door panels can provide stable support for the bent portion of the flexible display screen, improving the reliability of the bent portion when pressed. Furthermore, in the folded state of the electronic device, the lifting plate, together with the first and second rotating door panels, forms the screen-accommodating space, constraining the bent portion of the flexible display screen into a teardrop shape within the space. Because the lifting plate is closer to the main axis when the electronic device is folded than when it is flat, the screen space is increased, providing sufficient space for the bending part of the flexible display screen.

[0022] In one possible implementation, a sleeve is provided on the side of the lifting plate facing away from the flexible display screen; the main shaft has a hole through which at least a portion of the sleeve passes; the rotating mechanism further includes a lifting spring and a fastener, the lifting spring being sleeved on the sleeve, the end of the sleeve away from the lifting plate engaging with the fastener, the lifting spring being positioned between the fastener and the main shaft, one end of the lifting spring contacting the fastener, and the other end of the lifting spring contacting the surface of the main shaft facing away from the lifting plate. This solution defines a specific connection scheme between the lifting plate and the main shaft. By compressing the lifting spring with the fastener, when the lifting plate is subjected to a pushing force in a direction away from the main shaft, the lifting spring can be compressed, causing the lifting plate to move in a direction away from the main shaft; when the lifting plate is not subjected to a pushing force in a direction away from the main shaft, the lifting spring can return to its original position, causing the lifting plate to move in a direction closer to the main shaft. With this arrangement, the lifting plate can move relative to the main shaft in a direction away from or closer to the main shaft, thereby allowing the lifting plate to be closer to the main shaft in the folded state of the electronic device than in the flattened state of the electronic device.

[0023] In one possible implementation, the first rotating door panel has a first notch, and the second rotating door panel has a second notch. When the rotating mechanism is in the flattened state, the first and second rotating door panels are joined together, and the first and second notches form a cavity. In the flattened state, the lifting plate is at least partially disposed within the cavity. This solution defines the specific design of the first and second rotating door panels of the rotating mechanism with the lifting plate feature. By using a cavity to accommodate the lifting plate, the rotating mechanism achieves a flat structural form in the flattened state, providing more stable support for the flexible display screen.

[0024] In one possible implementation, the main shaft includes a main inner shaft and a top cover. The main inner shaft is located between the top cover and the lifting plate. The main inner shaft is used to cooperate with the first transmission link, the second transmission link, the transmission module, the door panel swing arm, and the lifting plate. This solution defines the specific structure of the main shaft. The main inner shaft serves as a functional structure to assemble the first transmission link, the second transmission link, the transmission module, the door panel swing arm, and the lifting plate. The top cover serves as an exterior component to cover the main inner shaft, resulting in better visual consistency of the rotating mechanism.

[0025] In one possible implementation, the rotating mechanism further includes a stop member; during rotation of the rotating mechanism, the stop member rotates relative to the main inner shaft; when the rotating mechanism is in a flattened state, the stop member abuts against the side of the lifting plate facing the main shaft and holds the lifting plate relatively away from the main shaft; when the rotating mechanism is in a folded state, the stop member does not abut against the lifting plate, allowing the lifting plate to return to its original position under the action of the lifting spring. In such an embodiment, in the flattened state of the electronic device, the stop member can apply a pushing force to the lifting plate in a direction away from the main shaft, while in the folded state of the electronic device, the stop member does not apply such a pushing force to the lifting plate. Therefore, the movement of the lifting plate can be reliably controlled using the stop member, such that the lifting plate is closer to the main shaft in the folded state of the electronic device than in the flattened state.

[0026] In one possible implementation, the first transmission link is rotatably connected to the main shaft via a first pin and can rotate with the first pin. The second transmission link is rotatably connected to the main shaft via a second pin and can rotate with the second pin. Each of the first and second pins is provided with a stopper that can rotate with the first and second pins. The stopper is used to abut against the side of the lifting plate facing the main shaft in the flattened state of the electronic device and to hold the lifting plate in the cavity. In the folded state, the stopper moves away from the lifting plate, allowing the lifting plate to reset under the action of the corresponding lifting spring. In another possible implementation, one stopper is provided at each end of the first pin, and one stopper is provided at each end of the second pin. In this embodiment, during the transition of the electronic device from a folded state to a flattened state, the stoppers at both ends of the first and second pins can apply a uniform pushing force to the lifting plate, thereby ensuring the stability of the lifting plate's movement relative to the main shaft. Furthermore, this arrangement ensures that the lifting plate, the first rotating door plate, and the second rotating door plate are substantially flush with each other when the electronic equipment is flattened.

[0027] In one possible implementation, the abutment and the first pin are integrally formed; alternatively, the abutment is sleeved around the first pin and fixedly connected to it. This solution specifies two particular arrangements between the abutment and the first pin.

[0028] In one possible implementation, the abutment includes a mounting portion and a pressing portion protruding relative to the mounting portion. The mounting portion is sleeved around and fixedly connected to the first pin. The pressing portion is used to abut the lifting plate when the rotating mechanism is in the flattened state. This solution defines a specific structural scheme for the abutment, which is fixedly connected to the first pin via the mounting portion and abuts the lifting plate via the pressing portion.

[0029] In one possible implementation, the cross-sectional shape of the mounting part and the mating surface of the first pin is flat, polygonal, or irregular.

[0030] In one possible implementation, a stopper is provided at each end of the first pin, and a stopper is provided at each end of the second pin. This solution, by providing a stopper at each end of the first pin, helps to ensure the structural stability and balance of the rotating mechanism.

[0031] In one possible implementation, in the folded state of the rotating mechanism, at least part of the lifting plate is located between the two abutting members. This solution, by having two abutting members share the support of the lifting plate, maintains the stable positioning of the lifting plate, resulting in better structural strength of the rotating mechanism in the flattened state. In the folded state, the lifting plate located between the two abutting members saves space.

[0032] In one possible implementation, the transmission module includes a gear set architecture; alternatively, the transmission module includes a conveyor belt architecture; or the transmission module comprises a linkage structure. This solution defines various specific solutions for transmission modules.

[0033] In one possible implementation, in the flattened state, multiple straight seams are formed at the joint between the first and second rotating door panels, with adjacent straight seams spaced apart. This solution defines the specific structural form of the joint position of the two rotating door panels in a two-panel structure, with the aforementioned void structure between adjacent straight seams.

[0034] In one possible implementation, when the rotating mechanism is in a flattened state, a complete, hole-free seam is formed at the joint between the first rotating door panel and the second rotating door panel.

[0035] In one possible implementation, the rotating mechanism further includes a middle door panel. In the flattened state of the electronic device, the middle door panel is connected between the first rotating door panel and the second rotating door panel, and the first rotating door panel, the middle door panel, and the second rotating door panel jointly support the bending portion. This solution defines a three-door panel folding device that supports the flexible display screen through the cooperation of the middle door panel and the two rotating door panels. Although this solution uses three door panels, the connection between the two rotating door panels and the main shaft remains a single-stage transmission, i.e., the main shaft is rotated via the door panel swing arm. This design offers the advantage of structural simplicity and ensures the movement accuracy of the rotating door panels.

[0036] In one possible implementation, the first rotating door panel and the door panel swing arm are an integral structure; alternatively, the first rotating door panel and the door panel swing arm are fixedly connected by fasteners. This solution defines a specific fixing scheme for the rotating door panel and the corresponding door panel swing arm, and has the advantage of being easy to implement.

[0037] In one possible implementation, the door panel swing arm includes a first rotating portion, and the main shaft includes a second rotating portion. One of the first and second rotating portions includes an arc-shaped concave portion, and the other includes an arc-shaped convex portion. The arc-shaped concave portion and the arc-shaped convex portion are rotatably connected to achieve a rotatable connection between the door panel swing arm and the main shaft. In this embodiment, through the cooperation of the arc-shaped convex portion and the arc-shaped concave portion, the rotating door panel can be reliably and stably directly connected to the main shaft, thereby ensuring high motion accuracy of the rotating door panel relative to the main shaft.

[0038] In one possible implementation, the door panel swing arm includes a first rotating part, and the main shaft includes a second rotating part. One of the first and second rotating parts includes a first pivot hole, and the other includes a first pivot. The first pivot passes through the first pivot hole to achieve a rotational connection between the door panel swing arm and the main shaft. This solution specifies that the rotational connection between the door panel swing arm and the main shaft is achieved through the cooperation of the pivot and the pivot hole. This also allows the rotating door panel to be reliably and stably directly connected to the main shaft, thereby ensuring high motion accuracy of the rotating door panel relative to the main shaft.

[0039] In one possible implementation, the first housing and the second housing are respectively provided with second pivot holes. The first housing and the second housing are rotatably connected to the first rotating door panel and the door panel swing arm on the second rotating door panel via second pivots passing through the second pivot holes. In one embodiment, the radial dimensions of the second pivot holes on the first housing connecting rod and the second housing connecting rod are respectively larger than the radial dimensions of the corresponding second pivots. This solution defines a method for the movable connection between the door panel swing arm and the first and second housings.

[0040] In one possible implementation, the second pivot is movable radially within a through-hole in the second pivot. The door panel arm includes a spring cavity containing a thrust spring. One end of the thrust spring abuts against the door panel arm, and the other end abuts against the first or second housing, allowing the first or second housing to move away from the door panel arm. In this embodiment, in the flattened state of the electronic device, the thrust spring pushes the corresponding housing link away from the door panel arm, causing the first and second housing links to move significantly away from each other, thereby flattening the bent portion of the flexible display screen as much as possible. This improves the flatness of the bent portion of the flexible display screen, thus enhancing its light and shadow effects. Furthermore, in the folded state of the electronic device, the thrust spring also pushes the corresponding housing link away from the door panel arm, increasing the screen storage space.

[0041] In one possible implementation, the door panel swing arm and the first housing are slidably connected by a slider and a groove; or, the door panel swing arm and the first housing are rotatably connected by an arc-shaped arm and an arc-shaped groove. Similarly, the door panel swing arm and the second housing can also be connected in the manner provided by this solution.

[0042] In one possible implementation, the rotating mechanism includes at least two rotating modules, each rotating module including the main shaft and the door panel swing arm rotatably connected to the main shaft. The at least two rotating modules are arranged along the length of the main shaft, and a wiring space is provided between adjacent rotating modules. Alternatively, the number of rotating mechanisms is at least two, arranged along the length of the main shaft, and a wiring space is provided between adjacent rotating mechanisms. The electronic device also includes a flexible circuit board, which includes a first part, a second part, and a connecting part connecting the first part and the second part. The first part is located on one side of the first housing, the second part is located on one side of the second housing, and the connecting part is located in the wiring space. This solution, by setting the rotating mechanism as an architecture of at least two rotating modules, provides a modular design that facilitates assembly and design. Furthermore, the wiring space between adjacent rotating modules also facilitates the arrangement of the flexible circuit board in the electronic device.

[0043] Secondly, this application provides an electronic device including a flexible display screen, a first housing, a second housing, and a rotating mechanism provided by any possible implementation of the first aspect. The flexible display screen includes a first non-bending portion, a bending portion, and a second non-bending portion arranged sequentially. A first housing link is fixedly connected to the first housing, and a second housing link is fixedly connected to the second housing. The rotating mechanism is used to support a portion of the flexible display screen in a flattened state of the electronic device and to accommodate a portion of the flexible display screen under a folding device of the electronic device. The first non-bending portion is fixedly connected to the first housing, and the second non-bending portion is fixedly connected to the second housing. The rotating mechanism is used to support the bending portion in a flattened state and to accommodate the bending portion under a folding device.

[0044] The electronic device provided in this application, since both the first and second rotating door panels are fixedly connected to the door panel swing arm, can be considered to move synchronously with the door panel swing arm during unfolding or folding. Therefore, the first and second rotating door panels of the folding device provided in this application can rotate directly relative to the main shaft. The connection between the two rotating door panels and the main shaft is a single-stage transmission architecture, which improves the motion accuracy of the first and second rotating door panels. Moreover, due to the high motion accuracy of the first and second rotating door panels, a stable screen-accommodating space can be provided between the first and second rotating door panels in the folded state of the electronic device. In addition, in the flattened state of the electronic device, the first and second rotating door panels can provide stable support for the bending part of the flexible display screen, improving the reliability of the bending part of the flexible display screen when pressed. Furthermore, due to the single-stage transmission relationship between the first and second rotating door panels and the main shaft, the swaying of the first and second rotating door panels is small when the electronic device is accidentally dropped, thereby providing stable protection for the flexible display screen and improving the reliability of the electronic device.

[0045] In one possible implementation, in the folded state, the first rotating door panel and the second rotating door panel form a first angle, and neither the first nor the second rotating door panel exerts any force on the flexible display screen, allowing the flexible display screen to be in a naturally bending state. This application, by limiting the angle between the first and second rotating door panels to a first angle in the folded state, ensures that neither the first nor the second rotating door panel exerts any force on the flexible display screen, allowing the flexible display screen to be in a naturally bending state. That is, in the bending state, the flexible display screen is not subject to any tensile or compressive forces, which helps to improve the lifespan of the flexible display screen.

[0046] In one possible implementation, there is no connection between the first rotating door panel and the flexible display screen, and no connection between the second rotating door panel and the flexible display screen. A portion of the flexible display screen contacts the first rotating door panel, and a portion of the flexible display screen contacts the second rotating door panel.

[0047] In other embodiments, the flexible display screen and the two rotating door panels can be connected, for example by adhesive bonding. However, in the folded state, the connection between the flexible display screen and the two rotating door panels is not subjected to force, which can also ensure that the flexible display screen naturally bends into a teardrop shape when bent.

[0048] In one possible implementation, in the folded state, the first rotating door panel and the second rotating door panel form a second included angle. The first rotating door panel is connected to the flexible display screen, and the second rotating door panel is connected to the flexible display screen. The first and second rotating door panels exert a tensile force on the flexible display screen, and the direction of the tensile force is away from the center of the screen-accommodating space. The folding device provided by this solution can provide a larger screen-accommodating space. Specifically, the first and second rotating door panels are connected to the flexible display screen, and the first and second rotating door panels exert a tensile force on the flexible display screen, and the direction of the tensile force is away from the center of the screen-accommodating space. This solution allows the flexible display screen to form a larger bending space in the bent state. It can also be understood that this solution makes the radius of curvature of the bent portion of the flexible display screen in the bent state larger than the radius of curvature in the naturally bent state. This solution helps to ensure the lifespan of the flexible display screen, enabling electronic devices to adapt to different usage environments. For example, in harsh environments with high temperature and high humidity, the flexible display screen of the electronic device still has a good lifespan.

[0049] In one possible implementation, the first included angle is smaller than the second included angle.

[0050] This summary section is provided to present the selected concepts in a simplified form, which will be described in detail in the following specific embodiments. The summary section is not intended to identify key or principal features of the contents of this application, nor is it intended to limit the scope of the contents. Attached Figure Description

[0051] The above and other objects, features, and advantages of embodiments of this application will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings. Several embodiments of this application are illustrated in the drawings by way of example and not limitation.

[0052] Figures 1 to 43The diagram shown is a schematic of an electronic device and a folding device provided in one embodiment of this application;

[0053] Figure 1 This is a schematic diagram of the structure of an electronic device in a flattened state, as provided in an embodiment of this application;

[0054] Figure 2 yes Figure 1 A schematic diagram of the folding device of the electronic device shown;

[0055] Figure 3 yes Figure 1 The diagram shows the exploded structure of the electronic device in a flattened state.

[0056] Figure 4 yes Figure 1 The diagram shows the structure of the electronic device in an intermediate state.

[0057] Figure 5 yes Figure 4 A schematic diagram of the folding device of the electronic device shown;

[0058] Figure 6 yes Figure 4 The diagram shows the exploded structure of the electronic device in an intermediate state.

[0059] Figure 7 yes Figure 1 The diagram shows the structure of the electronic device when it is in a closed state.

[0060] Figure 8 yes Figure 7 The diagram shows the exploded structure of the electronic device when it is in a closed state.

[0061] Figure 9 This is a schematic diagram of the structure of a rotating mechanism provided in an embodiment of this application when the electronic device is in a flattened state;

[0062] Figure 10 yes Figure 9 The rotating mechanism shown moves along the same path as the electronic device when it is in a flattened state. Figure 9 A structural diagram viewed from the opposite perspective;

[0063] Figure 11 yes Figure 9 The diagram shown is an exploded view of the rotating mechanism when the electronic device is in a flattened state.

[0064] Figure 12 yes Figure 11 An exploded view of the main shaft in the rotating mechanism shown.

[0065] Figure 13 yes Figure 12 A schematic diagram of the main inner shaft in the spindle shown;

[0066] Figure 14 yes Figure 13 The bottom view of the main inner axis shown;

[0067] Figure 15 yes Figure 14 The main inner axis shown Figure 14 A schematic diagram of a partial cross-sectional structure along section A1-A1 is shown.

[0068] Figure 16 yes Figure 13 A partially enlarged schematic diagram of the main inner shaft shown;

[0069] Figure 17 and Figure 18 yes Figure 11 The diagram shows the structure of the door panel swing arm in the rotating mechanism as viewed from different angles;

[0070] Figure 19 yes Figure 17 and Figure 18 The door panel swing arm shown is Figure 16 The diagram showing the fit relationship of the main inner shaft is shown.

[0071] Figure 20 yes Figure 9 The diagram shows a partial structural schematic of the rotating mechanism when the electronic device is in a flattened state.

[0072] Figure 21 yes Figure 9 The diagram shown is a partially exploded view of the rotating mechanism when the electronic device is in a flattened state.

[0073] Figure 22 and Figure 23 yes Figure 21 A schematic diagram of the first housing link in the rotating mechanism as viewed from different angles;

[0074] Figure 24 yes Figure 22 The first housing connecting rod shown is along Figure 22 A schematic diagram of a partial cross-sectional structure along section A4-A4 is shown.

[0075] Figure 25 yes Figure 21 The diagram shows the structure of the door panel swing arm in the rotating mechanism.

[0076] Figure 26 yes Figure 21 A schematic diagram of the synchronous damping element in the rotating mechanism shown in the diagram when the electronic device is in a flattened state;

[0077] Figure 27 yes Figure 26 The exploded structural diagram of the synchronous damping component is shown.

[0078] Figure 28 yes Figure 27 The diagram shows the structure of the first integrated cam in the synchronous damping component.

[0079] Figure 29 yes Figure 20 The diagram shows a partial structural schematic of the rotating mechanism when the electronic device is in a folded state.

[0080] Figure 30 yes Figure 11 A schematic diagram of the structure of the first rotating door plate, the second rotating door plate, and the lifting plate in the rotating mechanism shown in the diagram when the electronic device is in a flattened state;

[0081] Figure 31 yes Figure 11 An exploded view of the lifting plate and related mounting components in the rotating mechanism shown.

[0082] Figure 32 This is a bottom view of the spindle, lifting plate, and synchronous damping components when the electronic equipment is in a flattened state.

[0083] Figure 33 yes Figure 32 The spindle, lifting plate, and synchronous damping components shown are along... Figure 32 A schematic diagram of a partial cross-sectional structure along section A2-A2 is shown.

[0084] Figure 34 yes Figure 9 The diagram shows a partial structural schematic of the rotating mechanism when the electronic device is in a flattened state.

[0085] Figure 35 This is a bottom view of the main inner shaft of the rotating mechanism and the lifting plate when the electronic device is in a flattened state.

[0086] Figure 36 yes Figure 35 The main inner shaft and lifting plate shown are along Figure 35 A schematic diagram of a partial cross-sectional structure along section A3-A3 is shown.

[0087] Figure 37 yes Figure 9 The diagram shows the structure of the rotating mechanism when the electronic device is in a folded state.

[0088] Figure 38 yes Figure 37 The diagram shows a partial structural schematic of the rotating mechanism when the electronic device is in a folded state.

[0089] Figure 39This is a bottom view of the main inner shaft of the rotating mechanism and the lifting plate when the electronic device is in a folded state.

[0090] Figure 40 yes Figure 39 The main inner shaft and lifting plate shown are along Figure 39 A schematic diagram of a partial cross-sectional structure along section A5-A5 is shown.

[0091] Figure 41 This is a schematic diagram of the rotating mechanism and flexible display screen when the electronic device is in a folded state.

[0092] Figure 42 yes Figure 9 The diagram shows the structure of the rotating mechanism when the electronic device is in an intermediate state.

[0093] Figure 43 yes Figure 42 The diagram shows a partial structural schematic of the rotating mechanism when the electronic device is in an intermediate state.

[0094] Figures 44 to 54 The diagram shown is a schematic diagram of the rotating mechanism of a folding device for an electronic device according to one embodiment of this application;

[0095] Figure 44 This is a perspective view of the rotating mechanism of a folding device for an electronic device according to one embodiment of this application;

[0096] Figure 45 This is a perspective view of the rotating mechanism of the folding device of an electronic device provided in one embodiment of this application from another direction;

[0097] Figure 46 This is an exploded view of the rotating mechanism of a folding device for an electronic device according to one embodiment of this application;

[0098] Figure 47 This is an exploded view of the rotating mechanism of the folding device of an electronic device provided in one embodiment of this application from another direction;

[0099] Figure 48 This is an exploded view of the rotating module in a folding device provided in one embodiment, in one direction.

[0100] Figure 49 This is an exploded view of the rotating module in a folding device provided in one embodiment, from another direction.

[0101] Figure 50 This is a cross-sectional view of the rotating mechanism of the folding device of an electronic device provided in one embodiment of this application in a flattened state;

[0102] Figure 50AThis is a cross-sectional view of the rotating mechanism of the folding device of an electronic device provided in one embodiment of this application in a flattened state;

[0103] Figure 51 This is a cross-sectional view of the rotating mechanism of the folding device of an electronic device provided in one embodiment of this application in a flattened state;

[0104] Figure 52 This is a perspective view of the rotating mechanism of the folding device of an electronic device provided in one embodiment of this application in a folded state;

[0105] Figure 53 This is a cross-sectional view of the rotating mechanism of the folding device of an electronic device provided in one embodiment of this application in the folded state;

[0106] Figure 54 This is a cross-sectional view of the rotating mechanism of the folding device of an electronic device provided in one embodiment of this application in the folded state;

[0107] Figure 54A yes Figures 1 to 43 The image shown is a cross-sectional view of a folding device for an electronic device provided in one embodiment of this application in a folded state in one direction.

[0108] Figures 55 to 65 The diagram shown is a schematic diagram of the rotating mechanism of an electronic device and a folding device provided in one embodiment of this application;

[0109] Figure 55 This is a perspective view of the rotating mechanism of a folding device for an electronic device according to one embodiment of this application;

[0110] Figure 56 This is a perspective view of the rotating mechanism of the folding device of an electronic device provided in one embodiment of this application from another direction;

[0111] Figure 57 This is an exploded view of the rotating mechanism of a folding device for an electronic device according to one embodiment of this application;

[0112] Figure 58 This is an exploded view of the rotating mechanism of the folding device of an electronic device provided in one embodiment of this application from another direction;

[0113] Figure 59 This is an exploded view of the rotating module in a folding device provided in one embodiment, in one direction.

[0114] Figure 60 This is an exploded view of the rotating module in a folding device provided in one embodiment, from another direction.

[0115] Figure 61This is a cross-sectional view of the rotating mechanism of a folding device for an electronic device according to one embodiment of this application;

[0116] Figure 62 This is a cross-sectional view of the rotating mechanism of a folding device for an electronic device according to one embodiment of this application;

[0117] Figure 63 This is a perspective view of the rotating mechanism of the folding device of an electronic device provided in one embodiment of this application in a folded state;

[0118] Figure 64 This is a cross-sectional view of the rotating mechanism of the folding device of an electronic device provided in one embodiment of this application in the folded state;

[0119] Figure 65 This is a cross-sectional view of the rotating mechanism of the folding device of an electronic device provided in one embodiment of this application in the folded state;

[0120] Figure 66 and Figure 67 This is a schematic diagram of an embodiment of a specific movable connection between the door panel swing arm and the first housing connecting rod in the rotating mechanism of the folding device provided in this application;

[0121] Figure 68 and Figure 69 This is a schematic diagram of an embodiment of a specific movable connection between the door panel swing arm and the first housing connecting rod in the rotating mechanism of the folding device provided in this application;

[0122] Figure 70 and Figure 71 This is a schematic diagram of an embodiment of a specific movable connection between the door panel swing arm and the first housing connecting rod in the rotating mechanism of the folding device provided in this application;

[0123] Figures 72-75 The diagram shown is a schematic of the rotating mechanism of the electronic device and folding device provided in the fourth embodiment;

[0124] Figure 72 This is a perspective view of the rotating mechanism of a folding device for an electronic device according to one embodiment of this application;

[0125] Figure 73 This is a perspective view of the rotating mechanism of the folding device of an electronic device provided in one embodiment of this application from another direction;

[0126] Figure 74 This is an exploded view of the rotating mechanism of a folding device for an electronic device according to one embodiment of this application;

[0127] Figure 75This is an exploded view of the rotating mechanism of a folding device for an electronic device provided in one embodiment of this application from another direction.

[0128] In the various figures, the same or corresponding reference numerals indicate the same or corresponding parts. Detailed Implementation

[0129] Explanation of some terms

[0130] Parallelism: The parallelism defined in this application is not limited to absolute parallelism. This definition of parallelism can be understood as basic parallelism, allowing for situations where the parallelism is not absolute due to factors such as assembly tolerances, design tolerances, and structural flatness. These situations may lead to the sliding mating part and the first door panel not being absolutely parallel, but this application also defines such situations as parallelism.

[0131] Perpendicularity: The perpendicularity defined in this application is not limited to an absolute perpendicular intersection (with an included angle of 90 degrees). It is permissible for non-absolute perpendicular intersections caused by factors such as assembly tolerances, design tolerances, and structural flatness. It is permissible for errors within a small angular range, such as an assembly error range of 80 to 100 degrees, which can all be understood as a perpendicular relationship.

[0132] Flattened state: This can be understood as the angle between the first and second planar regions of an electronic device being close to 180 degrees. It does not limit the angle between the first and second planar regions to an absolute 180-degree angle. It is permissible for the angle between the two regions to be less than 180 degrees due to factors such as assembly tolerances, design tolerances, and structural flatness. For example, it can be an angle greater than 180 degrees, such as 183 degrees, or an angle less than 180 degrees, such as 178 degrees.

[0133] Folded state: This can be understood as a near-parallel stacking relationship between the first and second planar regions of an electronic device, not limited to an absolute parallel relationship, referring to the aforementioned definition of parallelism.

[0134] The technical solutions of this application will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them.

[0135] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. "And / or" in this article is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone.

[0136] Hereinafter, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0137] Furthermore, in this application, directional terms such as "center," "front," "rear," "inner," and "outer" are defined relative to the orientation or position of the components shown in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, rather than indicating or implying that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. They can change accordingly depending on the orientation of the components in the accompanying drawings, and therefore should not be construed as limiting this application.

[0138] It should also be noted that in the embodiments of this application, the same reference numerals are used to represent the same component or part. For the same part in the embodiments of this application, the reference numerals may only be used to mark one part or component as an example. It should be understood that the reference numerals are also applicable to other identical parts or components.

[0139] This application provides a folding device and an electronic device. The electronic device includes a folding device and a flexible display screen fixed to the folding device. The folding device can be unfolded to a flattened state (also called an unfolded state), folded to a closed state (also called a folded state), or in an intermediate state between the flattened and closed states. There are multiple consecutive intermediate states between the flattened and closed states. The flexible display screen unfolds and folds with the folding device.

[0140] Figures 1 to 43 The diagram shows an electronic device, folding device, and rotating mechanism according to one embodiment of this application. The electronic device provided in this embodiment has a flexible screen inward folding structure and a two-panel structure. Specifically, each panel has a notch forming a cavity. In one embodiment, a lifting plate can be provided at the cavity position so that the lifting plate and the two panels jointly support the flexible screen. The electronic device provided in this embodiment is described in detail below.

[0141] Please refer to the following: Figures 1 to 8 , Figure 1 This is a schematic diagram of the structure of an electronic device 100 in a flattened state, as provided in an embodiment of this application. Figure 2 yes Figure 1 The diagram shows the structure of the electronic device 100 when the folding device 800 is in a flattened state. Figure 3 yes Figure 1 The diagram shown is an exploded view of the electronic device 100 in its flattened state. Figure 4yes Figure 1 The diagram shown illustrates the structure of the electronic device 100 in its intermediate state. Figure 5 yes Figure 4 The diagram shows the structure of the electronic device 100 when the folding device 800 is in an intermediate state. Figure 6 yes Figure 4 The diagram shown is an exploded view of the electronic device 100 in an intermediate state. Figure 7 yes Figure 1 The diagram shown illustrates the structure of the electronic device 100 in its closed state. Figure 8 yes Figure 7 The diagram shows an exploded view of the electronic device 100 in its closed state. The electronic device 100 can be a mobile phone, tablet computer, laptop computer, or similar product. This embodiment uses a mobile phone as an example for illustration.

[0142] Electronic device 100 includes a folding device 800 and a flexible display screen 200. The folding device 800 includes a first housing 10, a rotating mechanism 20, and a second housing 30 connected in sequence. The first housing 10 may include a middle frame and a back cover, and the second housing 30 may also include a middle frame and a back cover. The rotating mechanism 20 is deformable, allowing the first housing 10 and the second housing 30 to rotate about the rotating mechanism 20, thereby placing the electronic device 100 in a flattened state, an intermediate state, or a closed state. Figures 1 to 3 As shown, the first housing 10 and the second housing 30 can be unfolded relative to each other to a flattened state, so that the electronic device 100 is in a flattened state. For example, when the first housing 10 and the second housing 30 are in the flattened state, the included angle between them can be approximately 180° (slight deviations are also allowed, such as 166°, 178°, or 184°). Figures 4 to 6 As shown, the first housing 10 and the second housing 30 can rotate relative to each other (unfold or fold) to an intermediate state, so that the electronic device 100 is in an intermediate state. Figure 7 and Figure 8 As shown, the first housing 10 and the second housing 30 can be folded relative to each other to a closed state, so that the electronic device 100 is in a closed state. Wherein, Figures 4 to 6 The intermediate state shown can be any state between the flattened state and the closed state. Therefore, the electronic device 100 can switch between the flattened state and the closed state by deforming the rotating mechanism 20.

[0143] The flexible display screen 200 is fixed to the folding device 800, thereby enabling it to unfold or fold with the folding device 800. Exemplarily, the flexible display screen 200 can be bonded to the folding device 800 using an adhesive layer. The flexible display screen 200 includes a first non-bending portion 2001, a bending portion 2002, and a second non-bending portion 2003 arranged sequentially. The first non-bending portion 2001 of the flexible display screen 200 is fixed to the first housing 10, and the second non-bending portion 2003 is fixed to the second housing 30. During the relative folding or unfolding of the first housing 10 and the second housing 30, the bending portion 2002 deforms. Figures 1 to 3 As shown, when the first housing 10 and the second housing 30 are in a flattened state, the rotating mechanism 20 is essentially flush with both the first housing 10 and the second housing 30. At this time, the bent portion 2002 is supported by the rotating mechanism 20, and the flexible display screen 200 is in a flattened state, enabling full-screen display and giving the electronic device 100 a larger display area, thus improving the user's viewing experience. Figures 4 to 6 As shown, when the first housing 10 and the second housing 30 are in an intermediate state, the bending portion 2002 bends, and the flexible display screen 200 is in an intermediate state between a flattened state and a closed state. Figure 7 and Figure 8 As shown, when the first housing 10 and the second housing 30 are in a closed state, the flexible display screen 200 is in a closed state. At this time, the roughly teardrop-shaped bending portion 2002 will be accommodated in the screen-accommodating space 900 enclosed by the rotating mechanism 20. The specific formation of the screen-accommodating space 900 will be described in detail below.

[0144] In some embodiments, the flexible display screen 200 is used to display images. Exemplarily, the flexible display screen 200 may 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, or a quantum dot light-emitting diode (QLED) display screen.

[0145] In some embodiments, the electronic device 100 may further include multiple modules (not shown in the figures), which may be housed inside the folding device 800, for example, inside the first housing 10 and the second housing 30. The multiple modules of the electronic device 100 may include, but are not limited to, a motherboard, processor, memory, battery, camera module, earpiece module, speaker module, microphone module, antenna module, sensor module, etc. This application embodiment does not specifically limit the number, type, or location of the modules of the electronic device 100.

[0146] It is understood that when a user holds the electronic device 100, the position of the earpiece module of the electronic device 100 can be defined as the top of the electronic device 100, the position of the microphone module of the electronic device 100 can be defined as the bottom of the electronic device 100, and the two sides of the electronic device 100 held by the user's left and right hands can be defined as the left and right sides of the electronic device 100. In some embodiments, the electronic device 100 can be folded vertically. In other embodiments, the electronic device 100 can be folded horizontally.

[0147] The exemplary structure of a rotating mechanism 20 provided in one embodiment of this application will now be described in detail with reference to the accompanying drawings.

[0148] First refer to Figures 9 to 11 , Figure 9 This is a schematic diagram of the structure of a rotating mechanism 20 provided in an embodiment of this application when the electronic device 100 is in a flattened state. Figure 10 yes Figure 9 The rotating mechanism 20 shown moves along the same path as the electronic device 100 when it is in a flattened state. Figure 9 A structural diagram viewed from the opposite perspective. Figure 11 yes Figure 9 The diagram shows an exploded view of the rotating mechanism 20 when the electronic device 100 is in a flattened state.

[0149] In some embodiments, such as Figure 9 As shown, the rotating mechanism 20 includes a main shaft 1, a first housing connecting rod 24, and a second housing connecting rod 25. The rotation axis of the entire rotating mechanism 20 is parallel to the axial direction of the main shaft 1 (which can also be understood as the length direction of the main shaft 1), and the main shaft 1 extends along its axial direction. When the electronic device 100 is in a flattened state, the first housing connecting rod 24 and the second housing connecting rod 25 are located on opposite sides of the main shaft 1. The first housing connecting rod 24 and the second housing connecting rod 25 are symmetrically distributed with respect to the main shaft 1, that is, the first housing connecting rod 24 and the second housing connecting rod 25 are symmetrically arranged on both sides of the main shaft 1, and their structures can be identical. Figure 9The perspective shown allows us to consider the first housing link 24 as being located to the right of the main shaft 1, the second housing link 25 as being located to the left of the main shaft 1, and the side of the main shaft 1 facing away from the flexible display screen 200 as being visible. Figure 9 (As can be seen in the image) can be considered as the top side of the main shaft 1, and the side of the main shaft 1 facing the flexible display screen 200 ( Figure 9 The side not visible in the middle is considered the bottom side of the main shaft 1. The definitions of right side, left side, top side and bottom side here are purely for the convenience of describing the structure of the rotating mechanism 20, and are not intended to impose any strict limitations on the rotating mechanism 20.

[0150] The first housing link 24 is used to fix the first housing 10, and the second housing link 25 is used to fix the second housing 30. The first housing link 24 and the second housing link 25 can be connected to the first housing 10 and the second housing 30 respectively by fasteners. These fasteners include, but are not limited to, screws, bolts, rivets, and pins. By connecting the first housing 10 and the second housing 30 to the first housing link 24 and the second housing link 25 respectively, the following can be obtained: Figure 2 The folding device 800 is shown. Since the first housing link 24 is fixed to the first housing 10, the first housing 10 and the first housing link 24 move synchronously. The rotating mechanism 20 controls the movement trajectory of the first housing 10 by controlling the movement trajectory of the first housing link 24. In other embodiments, other connection structures can also be formed between the first housing link 24 and the first housing 10 (e.g., sliding connection, rotational connection; the relative position and attitude between the first housing link 24 and the first housing 10 during unfolding or closing can be adjusted through sliding and rotational connections). This application does not strictly limit this. Similarly, since the second housing link 25 is fixed to the second housing 30, the second housing 30 and the second housing link 25 move synchronously. The rotating mechanism 20 controls the movement trajectory of the second housing 30 by controlling the movement trajectory of the second housing link 25. In other embodiments, other connection structures may also be formed between the second housing link 25 and the second housing 30 (e.g., sliding connection, rotational connection, through which the relative position and attitude between the second housing link 25 and the second housing 30 during the unfolding or closing process can be adjusted), and this application does not strictly limit this.

[0151] In some embodiments, such as Figure 10As shown, the rotating mechanism 20 also includes a first rotating door plate 21 and a second rotating door plate 22. The first rotating door plate 21 and the second rotating door plate 22 are disposed on the bottom side of the main shaft 1 (i.e., the side of the main shaft facing the flexible display screen 200). The first rotating door plate 21 includes a first support surface 211 facing away from the main shaft 1, and the second rotating door plate 22 includes a second support surface 221 facing away from the main shaft 1. When the electronic device 100 is in a flattened state, the first support surface 211 and the second support surface 221 are substantially flush with each other, and can jointly support the bent portion 2002 of the flexible display screen 200. Figure 11 As shown, the first rotating door panel 21 further includes a first mounting surface 212 opposite to the first support surface 211, and the second rotating door panel 22 further includes a second mounting surface 222 opposite to the second support surface 221. Door panel swing arms 23 are respectively provided on the first mounting surface 212 and the second mounting surface 222.

[0152] See Figure 10 and Figure 11 In one embodiment, in the flattened state, multiple straight seams are formed at the joint between the first rotating door panel 21 and the second rotating door panel 22, and adjacent straight seams are spaced apart.

[0153] The door panel swing arm 23 includes a first rotating part 231, which is rotatably connected to the main shaft 1 so that the first rotating door panel 21 and the second rotating door panel 22 can rotate relative to the main shaft 1. The door panel swing arm 23 can be fixedly connected to the first rotating door panel 21 and the second rotating door panel 22 by fasteners. These fasteners include, but are not limited to, screws, bolts, rivets, and pins. The door panel swing arm 23 can also be bonded to the first rotating door panel 21 and the second rotating door panel 22 by an adhesive layer. Alternatively, the door panel swing arm 23 can be integrally formed with the first rotating door panel 21 and the second rotating door panel 22. The embodiments of this application do not strictly limit the specific arrangement of the door panel swing arm 23 with the first rotating door panel 21 and the second rotating door panel 22.

[0154] exist Figure 11In this embodiment, only one door panel swing arm 23 is shown on each of the first rotating door panels 21 and the second rotating door panel 22, which is disposed near one end of the rotating door panel. It should be understood that such an arrangement is merely illustrative and is not intended to limit the scope of this application. In some embodiments, multiple door panel swing arms 23 may be disposed on each of the first rotating door panels 21 and the second rotating door panel 22. For example, one door panel swing arm 23 may be disposed near each of the two ends of each rotating door panel. By using multiple door panel swing arms 23 to connect each of the first rotating door panels 21 and the second rotating door panel 22 to the main shaft 1, the stability and reliability of the rotational connection between the rotating door panel and the main shaft 1 can be improved. In some embodiments, instead of being disposed near the ends of the first rotating door panels 21 and the second rotating door panel 22, the door panel swing arm 23 may be disposed at other positions on the first rotating door panels 21 and the second rotating door panel 22, for example, disposed near the middle of the first rotating door panels 21 and the second rotating door panel 22. The embodiments of this application do not strictly limit the number and location of the door panel swing arms 23 on each of the first rotating door panel 21 and the second rotating door panel 22.

[0155] In some embodiments, such as Figure 11 As shown, the rotation mechanism 20 also includes at least one synchronizing damper 7. The specific structure of the synchronizing damper 7 and its relative arrangement with other components in the rotation mechanism 20 will be described in detail below. In some embodiments, such as Figure 10 and Figure 11 As shown, the rotating mechanism 20 also includes at least one lifting plate 26. The specific structure of the lifting plate 26 and its relative arrangement with other components in the rotating mechanism 20 will be described in detail below.

[0156] Next, please refer to Figures 12 to 16 To describe an exemplary structure of the spindle. Figure 12 yes Figure 11 An exploded view of the main shaft 1 in the rotating mechanism 20 shown. Figure 13 yes Figure 12 The diagram shows the structure of the main inner shaft 12 in the main shaft 1. Figure 14 yes Figure 13 The bottom view of the main inner shaft 12 shown. Figure 15 yes Figure 14 The main inner shaft 12 shown is along Figure 14 The diagram shows a partial cross-sectional structure along section A1-A1. Figure 16 yes Figure 13 A partially enlarged schematic diagram of the main inner shaft 12 shown.

[0157] In some embodiments, such as Figure 12As shown, the main shaft 1 includes a top cover 11 and a main inner shaft 12. The top cover 11 covers the main inner shaft 12 to protect it and provide a neat appearance for the main shaft 1. The top cover 11 is connected to the main inner shaft 12 via fasteners. These fasteners include, but are not limited to, screws, bolts, rivets, and pins. The main inner shaft 12 is the functional part of the main shaft 1, used to connect multiple connecting components of the rotating mechanism 20, such as the door panel swing arm 23 described above and some other components described below. It should be understood that including the top cover 11 and the main inner shaft 12 is merely one exemplary implementation of the main shaft 1. In other embodiments, the main shaft 1 can be formed in other forms, as long as it provides the required connection functionality.

[0158] like Figures 13 to 16 As shown, a second rotating part 131 is provided on the main inner shaft 12. The second rotating part 131 is used to interact with... Figure 11 The first rotating part 231 of the door panel swing arm 23 is rotatably connected, thereby connecting the first rotating door panel 21 and the second rotating door panel 22 to the main shaft 1. With this arrangement, the first rotating door panel 21 and the second rotating door panel 22 can rotate directly relative to the main shaft 1 via the door panel swing arm 23, and this single-stage transmission improves the motion accuracy of the rotating door panels. Furthermore, due to the high motion accuracy of the rotating door panels, the included angle deviation between the first rotating door panel 21 and the second rotating door panel 22 is small when the electronic device 100 is folded, thus providing a stable screen-accommodating space 900. In addition, since the rotating door panels are directly rotatably connected to the main shaft 1 via the door panel swing arm 23, the first rotating door panel 21 and the second rotating door panel 22 can provide stable support for the bent portion 2002 of the flexible display screen 200 when the electronic device 100 is flattened, improving the reliability of the bent portion 2002 of the flexible display screen 200 when pressed. Furthermore, since the rotating door panel is directly connected to the main shaft 1 via the door panel swing arm 23, the swaying of the rotating door panel is small when the electronic device 100 is accidentally dropped, thus providing stable protection for the flexible display screen 200 and improving the reliability of the electronic device 100.

[0159] Next, in Figures 12 to 16 Based on the combination Figures 17 to 19 This describes the working relationship between the door panel swing arm 23 and the main shaft 1. Figure 17 and Figure 18 yes Figure 11 The diagram shows the structure of the door panel swing arm 23 in the rotating mechanism 20 as viewed from different angles. Figure 19 yes Figure 17 and Figure 18 The door panel swing arm 23 shown is Figure 16 The diagram shows the fit relationship of the main inner shaft 12.

[0160] In some embodiments, such as Figure 17 and Figure 18 As shown, the first rotating part 231 of the door panel swing arm 23 includes a pair of arc-shaped recesses 2311 disposed on both sides of the door panel swing arm 23. Accordingly, as Figure 16 As shown, the second rotating part 131 of the main inner shaft 12 includes a pair of arc-shaped protrusions 1311 adapted to the pair of arc-shaped recesses 2311. Figure 19 As shown, each arc-shaped recess 2311 is fitted onto a corresponding arc-shaped protrusion 1311 and can rotate relative to the arc-shaped protrusion 1311. Through the cooperation between the arc-shaped recess 2311 and the arc-shaped protrusion 1311, the first rotating door panel 21 and the second rotating door panel 22 can be reliably and stably directly connected to the main shaft 1, thereby ensuring that the rotating door panel has high motion accuracy relative to the main shaft 1.

[0161] In some embodiments, with Figures 16 to 19 The implementation shown is the opposite. The first rotating portion 231 of the door panel swing arm 23 may include a pair of arc-shaped protrusions disposed on both sides of the door panel swing arm 23; correspondingly, the second rotating portion 131 of the main shaft 1 may include a pair of arc-shaped recesses adapted to the pair of arc-shaped protrusions. Similarly, each arc-shaped recess is fitted onto the corresponding arc-shaped protrusion and is rotatable relative to the arc-shaped protrusion. With this arrangement, the first rotating door panel 21 and the second rotating door panel 22 can also be reliably and stably directly connected to the main shaft 1 via the door panel swing arm 23.

[0162] In some embodiments, the first rotating portion 231 of the door panel swing arm 23 may include an arcuate protrusion on one side of the door panel swing arm 23 and an arcuate concave portion on the other side of the door panel swing arm 23; correspondingly, the second rotating portion 131 of the main shaft 1 may include an arcuate concave portion adapted to the arcuate protrusion on the door panel swing arm 23 and an arcuate protrusion adapted to the arcuate concave portion on the door panel swing arm 23. Similarly, each arcuate concave portion is fitted onto a corresponding arcuate protrusion and is rotatable relative to the arcuate protrusion. With this arrangement, the first rotating door panel 21 and the second rotating door panel 22 can also be reliably and stably directly connected to the main shaft 1 via the door panel swing arm 23.

[0163] In some embodiments, the door panel swing arm 23 can be rotatably connected to the main shaft 1 via a solid pivot. For example, the first rotating part 231 of the door panel swing arm 23 may include a first pivot through hole, and the second rotating part 131 of the main shaft 1 may include a first pivot passing through the first pivot through hole. Through the cooperation of the first pivot and the first pivot through hole, the first rotating door panel 21 and the second rotating door panel 22 can also be reliably and stably directly connected to the main shaft 1.

[0164] It should be understood that in other embodiments, the door panel swing arm 23 may also be directly rotatably connected to the main shaft 1 in other ways, and the embodiments of this application do not strictly limit this.

[0165] Next, in Figures 9 to 11 Based on the combination Figures 20 to 27 This describes the structure of the first housing link and the second housing link, as well as the relative arrangement of these two housing links with other components in the rotating mechanism. Figure 20 yes Figure 9 The diagram shown is a partial structural schematic of the rotating mechanism 20 when the electronic device 100 is in a flattened state. Figure 21 yes Figure 9 The diagram shown is a partial exploded view of the rotating mechanism 20 when the electronic device 100 is in a flattened state. Figure 22 and Figure 23 yes Figure 21 The diagram shows the structure of the first housing link 24 in the rotating mechanism 20 as viewed from different angles. Figure 24 yes Figure 22 The first housing connecting rod 24 shown is along Figure 22 The diagram shows a partial cross-sectional structure along section A4-A4. Figure 25 yes Figure 21 The schematic diagram of the door panel swing arm 23 in the rotating mechanism 20 shown is as follows. Figure 26 yes Figure 21 The schematic diagram shown is of the synchronous damping element 7 in the rotating mechanism 20 when the electronic device 100 is in a flattened state. Figure 27 yes Figure 26 The exploded structural diagram of the synchronous damping element 7 is shown. Figure 20 In order to more clearly show the relative arrangement between the first housing link 24 and the second housing link 25 and other components in the rotating mechanism 20, the main shaft 1 is omitted from the diagram. Figure 21 In this configuration, only the first housing link 24 and the second housing link 25 are disengaged from the other components of the rotating mechanism 20, so as to more clearly demonstrate how these two housing links are arranged relative to the other components in the rotating mechanism 20.

[0166] In some embodiments, the first housing connecting rod 24 and the door panel swing arm 23 fixedly connected to the first rotating door panel 21 are rotatably connected by a rotating shaft and a shaft hole, and the second housing connecting rod 25 and the door panel swing arm 23 fixedly connected to the second rotating door panel 22 are also rotatably connected by a rotating shaft and a shaft hole. Figures 20 to 24As shown, a fourth rotating part 243 is respectively provided on the first housing connecting rod 24 and the second housing connecting rod 25, and the fourth rotating part 243 has a second rotating shaft through hole 240. The second rotating shaft through hole 240 on the first housing connecting rod 24 is used to rotatably connect the first housing connecting rod 24 to the door panel swing arm 23 on the first rotating door panel 21. The second rotating shaft through hole 240 on the second housing connecting rod 25 is used to rotatably connect the second housing connecting rod 25 to the door panel swing arm 23 on the second rotating door panel 22. The door panel swing arms 23 on the first rotating door panel 21 and the second rotating door panel 22 are respectively provided with a second rotating shaft 232. Figure 25 As shown, a third pivot hole 235 is provided on the door panel swing arm 23, through which the second pivot 232 passes. The second pivot 232 of the door panel swing arm 23 on the first rotating door panel 21 also passes through the second pivot hole 240 on the first housing connecting rod 24. The second pivot 232 of the door panel swing arm 23 on the second rotating door panel 22 also passes through the second pivot hole 240 on the second housing connecting rod 25. With this arrangement, the first housing connecting rod 24 and the second housing connecting rod 25 can rotate around the corresponding second pivot 232, thereby allowing the first housing connecting rod 24 to be rotatably connected to the door panel swing arm 23 on the first rotating door panel 21, and the second housing connecting rod 25 to be rotatably connected to the door panel swing arm 23 on the second rotating door panel 22.

[0167] In some embodiments, the cross-sectional shape of the second pivot 232 may be circular, and its radial dimension may be substantially equal to the radial dimensions of the third pivot through hole 235 and the second pivot through hole 240. With this arrangement, the first housing link 24 and the second housing link 25 can be reliably and stably rotatably connected to the door panel swing arm 23. In other embodiments, the cross-sectional shape of the second pivot 232 may be other shapes, and its radial dimension may have other size relationships with the radial dimensions of the third pivot through hole 235 and the second pivot through hole 240. For example, the radial dimension of the second pivot 232 may be substantially equal to the radial dimension of the third pivot through hole 235 and smaller than the radial dimension of the second pivot through hole 240.

[0168] In some embodiments, such as Figure 11 , Figure 20 , Figure 21 , Figure 26 and Figure 27 As shown, the rotating mechanism 20 may further include a synchronous damping element 7. The synchronous damping element 7 can be rotatably connected to, for example, Figures 13 to 15The third rotating part 132 of the main inner shaft 12 is shown. The synchronous damping element 7 includes a first transmission link 71, a second transmission link 72, and a gear set 73. The first transmission link 71 includes a sliding end 711 and a rotating end 712. The rotating end 712 of the first transmission link 71 is rotatably connected to the third rotating part 132 of the main inner shaft 12, and the sliding end 711 of the first transmission link 71 is slidably connected to the first housing link 24. During the relative folding or unfolding of the first housing 10 and the second housing 30, the sliding end 711 of the first transmission link 71 slides relative to the first housing link 24. Similarly, the second transmission link 72 also includes a sliding end 711 and a rotating end 712. The rotating end 712 of the second transmission link 72 is rotatably connected to the third rotating part 132 of the main inner shaft 12, and the sliding end 711 of the second transmission link 72 is slidably connected to the second housing link 25. During the relative folding or unfolding of the first housing 10 and the second housing 30, the sliding end 711 of the second transmission link 72 slides relative to the second housing link 25. The rotating ends 712 of the first transmission link 71 and the second transmission link 72 can mesh with the gear set 73. It should be understood that, although in Figure 11 , Figure 20 and Figure 21 Only one synchronous damping element 7 is shown in the figure, but in the embodiments of this application, the rotating mechanism 20 may include multiple synchronous damping elements 7.

[0169] In some embodiments, such as Figures 21 to 23 As shown, the first housing connecting rod 24 has a guide groove 241, and the sidewall of the guide groove 241 may have a recessed guide space. For example... Figure 26 and Figure 27 As shown, the sliding end 711 of the first transmission link 71 includes a guide flange 701 located on its periphery. The guide flange 701 is installed in the guide space of the guide groove 241, so that the sliding end 711 of the first transmission link 71 is slidably connected to the guide groove 241 of the first housing link 24, thereby realizing the sliding connection between the first transmission link 71 and the first housing link 24. In this embodiment, through the cooperation between the guide space of the guide groove 241 and the guide flange 701 of the first transmission link 71, the sliding direction of the sliding end 711 of the first transmission link 71 relative to the guide groove 241 can be guided, making the relative sliding action between the first transmission link 71 and the first housing link 24 easier to achieve and with higher control precision.

[0170] Similarly, such as Figure 21 As shown, the second housing connecting rod 25 has a guide groove 241, and the sidewall of the guide groove 241 may have a recessed guide space. For example... Figure 26 and Figure 27As shown, the sliding end 711 of the second transmission link 72 includes a guide flange 701 located on its periphery. The guide flange 701 is installed in the guide space of the guide groove 241, so that the sliding end 711 of the second transmission link 72 is slidably connected to the guide groove 241 of the second housing link 25, thereby realizing the sliding connection between the second transmission link 72 and the second housing link 25. In this embodiment, through the cooperation between the guide space of the guide groove 241 and the guide flange 701 of the second transmission link 72, the sliding direction of the sliding end 711 of the second transmission link 72 relative to the guide groove 241 can be guided, making the relative sliding action between the second transmission link 72 and the second housing link 25 easier to achieve and with higher control precision.

[0171] Since the rotating end 712 of the first transmission link 71 and the rotating end 712 of the second transmission link 72 can mesh with each other through the gear set 73, the synchronization assembly 70 composed of the first transmission link 71, the second transmission link 72 and the gear set 73 has a simple structure, easy-to-control motion process and high accuracy.

[0172] For example, the structure of the second transmission link 72 can be roughly the same as that of the first transmission link 71 to simplify the types of materials for the rotating mechanism 20 and reduce the design difficulty and cost of the rotating mechanism 20.

[0173] During the unfolding and folding process of the folding device 800, the rotating end 712 of the first transmission link 71 meshes with the rotating end 712 of the second transmission link 72 through the gear set 73. Both the rotating ends 712 of the first and second transmission links 71 are rotatably connected to the main shaft 1. The sliding end 711 of the first transmission link 71 is slidably connected to the first housing link 24, and the sliding end 711 of the second transmission link 72 is slidably connected to the second housing link 25. Therefore, during the unfolding or folding process of the first housing 10 and the second housing 30, the first transmission link 71 and the second transmission link 72 can control the rotation angles of the first housing link 24 and the second housing link 25 relative to the main shaft 1 to be consistent, so that the rotation actions of the first housing 10 and the second housing 30 are synchronous and consistent. The folding and unfolding actions of the folding device 800 have better symmetry, which is beneficial to improving the user experience. Furthermore, since the first housing 10 and the second housing 30 are connected to the main shaft 1 through a housing connecting rod and a transmission connecting rod respectively, the fewer transmissions required can improve the reliability of the rotating mechanism 20 compared to the conventional rotating mechanism in which the housing is connected to the main shaft through multiple transmissions.

[0174] In some embodiments, such as Figure 26 and Figure 27As shown, the synchronous damping element 7 of the rotating mechanism 20 also includes a first integrated cam 74, a second integrated cam 75, an elastic element 76, a retaining ring 77, a retaining spring 78, a first pin 81, a second pin 82, and a plurality of third pins 83. The first pin 81 passes through the rotating end 712 of the first transmission link 71 for rotatably connecting the first transmission link 71 to, for example, Figures 13 to 15 The third rotating part 132 of the main inner shaft 12 is shown. A second pin 82 passes through the rotating end 712 of the second transmission link 72 for rotatably connecting the second transmission link 72 to... Figures 13 to 15 The third rotating part 132 of the main inner shaft 12 shown. Multiple third pins 83 are used to rotatably connect the gear set 73 to, for example... Figures 13 to 15 The third rotating part 132 of the main inner shaft 12 shown. The first pin 81, the second pin 82 and the third pin 83 are arranged substantially parallel to each other.

[0175] A retaining ring 77, an elastic element 76, a first integrated cam 74, a synchronization assembly 70, a second integrated cam 75, and a retaining spring 78 are sequentially sleeved on a first pin 81, a second pin 82, and a plurality of third pins 83. Each third pin 83 is provided with a stop block 832. The end of the retaining ring 77 abuts against the stop block 832 of the third pin 83. The first pin 81 and the second pin 82 each include a first limiting groove 811, each third pin 83 includes a second limiting groove 831, and the retaining spring 78 includes a plurality of grooves 781. The plurality of grooves 781 of the retaining spring 78 engage one-to-one with the first limiting groove 811 and the second limiting groove 831. Exemplarily, the elastic element 76 may include a plurality of springs 761, and the elastic element 76 may be in a compressed state to provide preload.

[0176] Figure 28 yes Figure 27 A schematic diagram of the structure of the first integrated cam 74 in the synchronous damping element 7 is shown. Figures 26 to 28 As shown, the first integrated cam 74 has a first end face 741 facing the synchronization assembly 70. The first end face 741 includes a plurality of spaced-apart first concave surfaces 741a and first convex surfaces 741b. The structure of the second integrated cam 75 can be similar to that of the first integrated cam 74, and its specific structure will not be described in detail in this embodiment. The two surfaces of the first transmission link 71, the second transmission link 72, and the gear set 73 that cooperate with the first integrated cam 74 and the second integrated cam 75 all include spaced-apart second concave surfaces and second convex surfaces. The cooperation between the plurality of convex and concave surfaces can provide torque that resists the relative rotation of the first housing 10 and the second housing 30, thereby improving the feel of the electronic device 100 during folding.

[0177] In some implementations, such as Figures 20 to 24As shown, the radial dimensions of the second pivot through-holes 240 on the first housing link 24 and the second housing link 25 are respectively larger than the radial dimension of the second pivot 232 passing through them. Exemplarily, the cross-section of the second pivot 232 can be approximately circular, and the second pivot through-hole 240 can be approximately elliptical. When the second pivot 232 passes through the second pivot through-hole 240, the second pivot 232 can move radially relative to the second pivot through-hole 240. It should be understood that the cross-sectional shape of the second pivot 232 can be other shapes, and the second pivot through-hole 240 can also be other shapes of through-holes, as long as the second pivot 232 can move radially relative to the second pivot through-hole 240; this application does not impose strict limitations on this.

[0178] In some embodiments, such as Figure 21 and Figure 25 As shown, the door panel swing arm 23 includes a spring cavity 233, in which at least one thrust spring 234 is disposed. One end (the inner end, not shown in the figure) of each thrust spring 234 abuts against the inner wall of the spring cavity 233 of the door panel swing arm 23, and the other end (the outer end shown in the figure) of each thrust spring 234 abuts against a corresponding housing link. With this arrangement, each thrust spring 234 can be in a compressed state between the door panel swing arm 23 and the corresponding housing link, thereby enabling the corresponding housing link to be pushed in a direction away from the corresponding door panel swing arm 23.

[0179] like Figure 20 As shown, when the electronic device 100 is in a flattened state, the thrust spring 234 can push the corresponding housing link along a direction away from the door panel arm 23. For example, the thrust spring 234 provided in the door panel arm 23 of the first rotating door panel 21 can push the first housing link 24 outward along a direction away from the door panel arm 23, and the thrust spring 234 provided in the door panel arm 23 of the second rotating door panel 22 can push the second housing link 25 outward along a direction away from the door panel arm 23. In this way, the first housing link 24 and the second housing link 25 can be moved away from each other to a great extent, and thus the first housing 10 and the second housing 30 can be moved away from each other to a great extent, so as to flatten the bent portion 2002 of the flexible display screen 200 as much as possible. In this way, the flatness of the bent portion of the flexible display screen 200 can be improved, thereby improving the light and shadow effect of the flexible display screen 200. Figure 29 yes Figure 20 The diagram shows a partial structural schematic of the rotating mechanism 200 when the electronic device 100 is in a folded state. Figure 29As shown, in the folded state of the electronic device 100, the thrust spring 234 can also push the corresponding housing link downwards in a direction away from the door panel arm 23. In this way, the fourth rotating part 243 of the first housing link 24 can become a supplementary extension of the first rotating door panel 21 at the edge of the first rotating door panel 21, and the fourth rotating part 243 of the second housing link 25 can become a supplementary extension of the second rotating door panel 22 at the edge of the second rotating door panel 22, thereby increasing the screen space 900 and better protecting the bending part 2002 of the flexible display screen 200.

[0180] In some embodiments, such as Figure 11 As shown, a first notch 210 is provided on one side of the first rotating part 231 of the door panel arm 23 disposed thereon, and a second notch 220 corresponding to the first notch 210 is provided on one side of the second rotating door panel 22 of the door panel arm 23 disposed thereon. The first notch 210 and the corresponding second notch 220 form a cavity 230 when the electronic device 100 is in a flattened state. Figure 20 As shown, in the flattened state of the electronic device 100, the projection of the synchronous damping member 7 along the direction perpendicular to the first rotating door plate 21 and the second rotating door plate 22 at least partially overlaps with the opening 230. That is, in the flattened state of the electronic device 100, the synchronous damping member 7, the first notch 210, and the second notch 220 are positioned corresponding to each other along the direction parallel to the main shaft 1. By providing the first notch 210 and the second notch 220 on the first rotating door plate 21 and the second rotating door plate 22, interference with the synchronous damping member 7 can be avoided when the first rotating door plate 21 and the second rotating door plate 22 rotate relative to the main shaft 1. Figure 11 The illustrated embodiment shows two openings 230 to illustrate the principle of the embodiments of this application. However, it should be understood that more or fewer first notches 210 and second notches 220 may be provided on the first rotating door panel 21 and the second rotating door panel 22 to form more or fewer openings 230, and the embodiments of this application do not impose strict limitations on this.

[0181] In some embodiments, such as Figure 10 , Figure 11 and Figure 20 As shown, the rotating mechanism 20 also includes a lifting plate 26 corresponding to the synchronous damping element 7. The synchronous damping element 7 is located between the corresponding lifting plate 26 and the main shaft 1. Figure 30 yes Figure 11 The diagram shows the structure of the first rotating door plate 21, the second rotating door plate 22, and the lifting plate 26 in the rotating mechanism 20 when the electronic device 100 is in a flattened state. Figure 30As shown, when the electronic device 100 is in a flattened state, the lifting plate 26 is at least partially located in the corresponding cavity 230, so as to at least partially close the corresponding cavity 230. With this arrangement, the lifting plate 26, together with the first rotating door plate 21 and the second rotating door plate 22, can support the bent portion 2002 of the flexible display screen 200. Figure 29 As shown, when the electronic device 100 is in a folded state, the lifting plate 26 together with the first rotating door plate 21 and the second rotating door plate 22 forms a screen-accommodating space 900.

[0182] Next, in Figures 10 to 16 as well as Figure 20 Based on the combination Figures 31 to 33 This describes the fit between the lifting plate 26 and the main shaft 1. Figure 31 yes Figure 11 An exploded view of the lifting plate 26 and related mounting components in the rotating mechanism 20 shown. Figure 32 This is a bottom view of the main spindle 1, lifting plate 26, and synchronous damping component 7 when the electronic device 100 is in a flattened state. Figure 33 yes Figure 32 The main shaft 1, lifting plate 26, and synchronous damping element 7 shown are along... Figure 32 The diagram shows a partial cross-sectional view of the structure along line A2-A2. To more clearly illustrate the working relationship between the main spindle 1, the lifting plate 26, and the synchronous damping component 7, [the following is shown in the diagram]. Figure 32 and Figure 33 The display of some components of the synchronous damping element 7 is omitted.

[0183] In some embodiments, such as Figure 11 , Figure 31 and Figure 33 As shown, each lifting plate 26 has a first sleeve 261 and a second sleeve 262 on the side facing the main shaft 1, and the first sleeve 261 and the second sleeve 262 are used to connect to the main shaft 1. Figures 12 to 16 as well as Figure 33 As shown, the main shaft 1 is provided with a first through hole 161 for the first sleeve 261 to pass through and a second through hole 162 for the second sleeve 262 to pass through. A first circumferential flange 1611 is provided on the inner wall of the first through hole 161, and a second circumferential flange 1621 is provided on the inner wall of the second through hole 162. Figure 33 As shown, the first sleeve 261 is inserted into the first through hole 161 from the bottom side of the main shaft 1, and the second sleeve 262 is inserted into the second through hole 162 from the bottom side of the main shaft 1.

[0184] like Figure 11 , Figure 31 and Figure 33As shown, a first lifting spring 2611 is disposed in the first through hole 161, sleeved on the first sleeve 261 (i.e., surrounding the first sleeve 261) and supported by the first circumferential flange 1611. The bottom end of the first lifting spring 2611 contacts and is supported by the first circumferential flange 1611. A second lifting spring 2621 is disposed in the second through hole 162, sleeved on the second sleeve 262 (i.e., surrounding the second sleeve 262) and supported by the second circumferential flange 1621. The bottom end of the second lifting spring 2621 contacts and is supported by the second circumferential flange 1621. A first fastener 2612 is disposed at the end of the first sleeve 261, and the top end of the first lifting spring 2611 contacts the first fastener 2612, so that the first lifting spring 2611 is compressed by the first fastener 2612 and the first circumferential flange 1611. The end of the second sleeve 262 is provided with a second fastener 2622, and the top end of the second lifting spring 2621 contacts the second fastener 2622, so that the second lifting spring 2621 is compressed by the second fastener 2622 and the second circumferential flange 1621. The first fastener 2612 and the second fastener 2622 include, but are not limited to, screws, bolts, rivets, and pins. Using this arrangement, the lifting plate 26 can be connected to the main shaft 1, and the lifting plate 26 can move relative to the main shaft 1 in a direction away from or towards the main shaft 1. Figure 33 As shown, when the lifting plate 26 is subjected to a downward pushing force (i.e., a pushing force along the direction away from the main shaft 1 and the top cover 11), the lifting plate 26 can overcome the elastic force of the first lifting spring 2611 and the second lifting spring 2621 and move relative to the main shaft 1 in the direction away from the main shaft 1. After the downward pushing force applied to the lifting plate 26 disappears, the first lifting spring 2611 and the second lifting spring 2621, which are in a compressed state, will push the first fastener 2612 and the second fastener 2622 upward, thereby causing the lifting plate 26 to move upward and reset.

[0185] The following will be Figure 26 and Figure 27 Based on the combination Figures 34 to 43 To describe an exemplary manner in which the lifting plate 26 moves relative to the main shaft 1.

[0186] In some embodiments, such as Figure 26 and Figure 27As shown, each of the first pin 81 and the second pin 82 includes a first connecting portion 812. Correspondingly, the rotating end 712 of the first transmission link 71 and the rotating end 712 of the second transmission link 72 each include a first connecting hole 713. The first connecting hole 713 and the first connecting portion 812 have substantially the same cross-sectional shape. The cross-sectional shapes of the first connecting hole 713 and the first connecting portion 812 include, but are not limited to, flat, polygonal, and irregular shapes. The first connecting hole 713 of the rotating end 712 of the first transmission link 71 is fitted onto the first connecting portion 812 of the first pin 81. The first connecting hole 713 of the rotating end 712 of the second transmission link 72 is fitted onto the first connecting portion 812 of the second pin 82. In this manner, the first transmission link 71 can rotate together with the first pin 81, and the second transmission link 72 can rotate together with the second pin 82.

[0187] In some embodiments, such as Figure 26 and Figure 27 As shown, each of the first pin 81 and the second pin 82 further includes a second connecting portion 813 disposed at one end of the pin. A stopper 80 is fitted onto the second connecting portion 813 of the first pin 81 and the second pin 82, respectively. The stopper 80 includes a mounting portion 801 and a pressing portion 803 protruding relative to the mounting portion 801. A second connecting hole 802 is provided in the mounting portion 801. The second connecting hole 802 and the second connecting portion 813 have substantially the same cross-sectional shape. The cross-sectional shapes of the second connecting hole 802 and the second connecting portion 813 include, but are not limited to, flat, polygonal, and irregular shapes. The cross-sectional shape of the second connecting portion 813 may be substantially the same as or different from the cross-sectional shape of the first connecting portion 812. The second connecting portions 813 of the first pin 81 and the second pin 82 respectively pass through the second connecting holes 802 of the corresponding stopper 80. In this way, each stopper 80 can rotate together with the corresponding pin in the first pin 81 and the second pin 82.

[0188] In some embodiments, such as Figure 26 and Figure 27As shown, each of the first pin 81 and the second pin 82 further includes a third connecting portion 814 disposed at the other end of the pin. Each of the third connecting portions 814 of the first pin 81 and the second pin 82 is also fitted with a stopper 80. Similarly, the stopper 80 also includes a mounting portion 801 and a pressing portion 803 protruding relative to the mounting portion 801. A second connecting hole 802 is provided in the mounting portion 801. The second connecting hole 802 and the third connecting portion 814 have substantially the same cross-sectional shape. The cross-sectional shapes of the second connecting hole 802 and the third connecting portion 814 include, but are not limited to, flat, polygonal, and irregular shapes. The cross-sectional shape of the third connecting portion 814 may be substantially the same as or different from the cross-sectional shapes of the first connecting portion 812 and the second connecting portion 813. The third connecting portions 814 of the first pin 81 and the second pin 82 respectively pass through the second connecting holes 802 of the corresponding stopper 80. In this way, each stopper 80 can rotate together with the corresponding pin in the first pin 81 and the second pin 82.

[0189] Figure 34 yes Figure 9 The diagram shows a partial structural schematic of the rotating mechanism 20 when the electronic device 100 is in a flattened state. Figure 26 , Figure 27 , Figure 30 and Figure 34 As shown, when the electronic device 100 is in a flattened state, the pressing parts 803 of the abutment members 80 on the first pin 81 and the second pin 82 press down on the opposite sides of the lifting plate 26, so that the lifting plate 26 is located in the corresponding cavity 230. At this time, the lifting plate 26 can support the bending part 2002 of the flexible display screen 200 together with the first rotating door panel 21 and the second rotating door panel 22.

[0190] Figure 35 This is a bottom view of the main inner shaft 12 of the rotating mechanism 20 and the lifting plate 26 when the electronic device 100 is in a flattened state. Figure 36 yes Figure 35 The main inner shaft 12 and the lifting plate 26 shown are along Figure 35 A schematic diagram of a partial cross-sectional structure along section A3-A3 is shown. Figures 34 to 36 As shown, since the abutments 80 on the first pin 81 and the second pin 82 press against the opposite sides of the lifting plate 26 respectively, the abutments 80 can overcome the elastic force of the first lifting spring 2611 and the second lifting spring 2621 and keep the lifting plate 26 away from the main shaft 1. At this time, as Figure 36 As shown, there is a distance D1 between the lifting plate 26 and the bottom side of the main inner shaft 12.

[0191] Figure 37 yes Figure 9 The diagram shown illustrates the structure of the rotating mechanism 20 when the electronic device 100 is in a folded state. Figure 38 yes Figure 37 The diagram shows a partial structural schematic of the rotating mechanism 20 when the electronic device 100 is in a folded state. Figure 26 , Figure 27 , Figure 37 and Figure 38 As shown, when the electronic device 100 is in a folded state, the abutments 80 on the first pin 81 and the second pin 82 no longer press against the lifting plate 26, and the first rotating door panel 21 and the second rotating door panel 22 are spaced apart. At this time, the first rotating door panel 21, the second rotating door panel 22, and the lifting plate 26 together form the screen-accommodating space 900.

[0192] Figure 39 This is a bottom view of the main inner shaft 12 of the rotating mechanism 20 and the lifting plate 26 when the electronic device 100 is in a folded state. Figure 40 yes Figure 39 The main inner shaft 12 and the lifting plate 26 shown are along Figure 39 A schematic diagram of a partial cross-sectional structure along section A5-A5 is shown. Figures 37 to 40 As shown, since the abutment 80 on the first pin 81 and the second pin 82 no longer presses down on the lifting plate 26, the first lifting spring 2611 and the second lifting spring 2621, which are in a compressed state, will push the first fastener 2612 and the second fastener 2622 upwards, thereby causing the lifting plate 26 to move upwards and reset. At this time, as Figure 40 As shown, the lifting plate 26 is closer to the bottom side of the main inner shaft 12 than when the electronic device 100 is in a flattened state. Therefore, the first rotating door plate 21, the second rotating door plate 22, and the lifting plate 26 together form a larger screen-accommodating space 900.

[0193] Figure 41 This is a schematic diagram of the rotating mechanism 20 and the flexible display screen 200 when the electronic device 100 is in a folded state. Figure 41 As shown, the bent portion 2002 of the flexible display screen 200 is housed in a screen-accommodating space 900 formed by the first rotating door panel 21, the second rotating door panel 22, and the lifting plate 26. The bent portion 2002 of the flexible display screen 200 is constrained into a teardrop shape within the screen-accommodating space 900. Because the lifting plate is closer to the main axis 1 in the folded state of the electronic device 100 than in the flattened state, the screen-accommodating space 900 is increased, providing sufficient space 900 for the bent portion 2002 of the flexible display screen 200.

[0194] Figure 42 yes Figure 9 The diagram shown illustrates the structure of the rotating mechanism 20 when the electronic device 100 is in an intermediate state. Figure 43 yes Figure 42The diagram shows a partial structural schematic of the rotating mechanism 20 when the electronic device 100 is in an intermediate state. Figure 42 and Figure 43 The intermediate state shown can be either an intermediate state during the process of the electronic device 100 changing from a flat state to a folded state, or an intermediate state during the process of the electronic device 100 changing from a folded state to a flat state.

[0195] like Figure 26 , Figure 27 , Figure 42 and Figure 43 As shown, during the process of the electronic device 100 changing from a flattened state to a folded state, the pressing portion 803 of the abutment 80 on the first pin 81 and the second pin 82 will gradually disengage from the lifting plate 26. At this time, the lifting plate 26 will move towards the main shaft 1 under the action of the first lifting spring 2611 and the second lifting spring 2621. Conversely, during the process of the electronic device 100 changing from a folded state to a flattened state, the pressing portion 803 of the abutment 80 on the first pin 81 and the second pin 82 will gradually contact the lifting plate 26 and begin to press the lifting plate 26. At this time, the abutment 80 can overcome the elastic force of the first lifting spring 2611 and the second lifting spring 2621 and push the lifting plate 26 away from the main shaft 1.

[0196] In some embodiments, more or fewer abutments 80 may be provided on the first pin 81 and the second pin 82, and the abutments 82 may be provided at other positions on the first pin 81 and the second pin 82. The embodiments of this application do not strictly limit this.

[0197] Figures 44 to 54 The diagram shown illustrates another embodiment of the rotating mechanism. The connection relationship between the rotating mechanism and the first housing, and the connection relationship between the rotating mechanism and the second housing, can be the same as those in the aforementioned embodiment. Figures 1-8 The implementation method shown is the same and will not be described in detail here. The electronic device and folding device provided in this embodiment are flexible screen inward folding structures, and can be a two-panel structure. The two panels can be without gaps, that is, the joint of the two panels does not need to be spliced ​​with other plate structures to support the flexible screen. Instead, the joint of the two panels forms a complete plate structure (a small gap can be formed at the joint) to improve the support and stability of the folding device for the flexible screen.

[0198] Figure 44 This is a perspective view of the rotating mechanism 20 of the folding device of an electronic device according to one embodiment of this application. Figure 45 This is a perspective view of the rotating mechanism 20 of the folding device of an electronic device provided in one embodiment of this application from another direction. Figure 46This is an exploded view of the rotating mechanism 20 of the folding device of an electronic device according to one embodiment of this application, in one direction. Figure 47 This is an exploded view of the rotating mechanism 20 of the folding device of an electronic device provided in one embodiment of this application from another direction.

[0199] See Figure 44 , Figure 45 , Figure 46 and Figure 47 The rotating mechanism 20 includes a top cover 11, a rotating module 20M, a first rotating door panel 21, and a second rotating door panel 22. The first rotating door panel 21 and the second rotating door panel 22 are structural components of the rotating mechanism 20 facing the flexible display screen. In the unfolded state, the first rotating door panel 21 and the second rotating door panel 22 jointly support the bent portion of the flexible display screen. In the folded state, the first rotating door panel 21 and the second rotating door panel 22 form a screen-accommodating space for the bent portion of the flexible display screen. The rotating module 20M is the core structure of the rotating mechanism 20, providing the opening and closing function of the rotating mechanism 20 (opening and closing can be understood as rotation, referring to the unfolding or folding process). The specific structure of the rotating module 20M will be described in detail later. The length direction of the rotating mechanism 20 is the extension direction of the rotation axis of the rotating mechanism 20 during the unfolding or folding process. The number of rotating modules 20M can be one, two, or more, and two or more rotating modules 20M can be arranged at intervals along the length direction of the rotating mechanism 20. Figure 46 and Figure 47 In the illustrated embodiment, there are two rotating modules 20M, and the space between the two rotating modules 20M is a wiring space 20R for the flexible circuit board of the electronic device to pass through. The flexible circuit board includes a first part, a second part, and a connecting part connecting the first part and the second part. The first part is located on one side of the first housing of the folding device of the electronic device, the second part is located on one side of the second housing of the folding device of the electronic device, and the connecting part is located in the wiring space 20R. This solution, by setting the rotating mechanism as an architecture of at least two rotating modules, provides a modular design that facilitates assembly and design. Furthermore, designing a wiring space between adjacent rotating modules also benefits the arrangement of the flexible circuit board of the electronic device.

[0200] In one embodiment, the rotating mechanism 20 may further include a first support 21B and a second support 22B. The rotating mechanism 20 may have one first support 21B and one second support 22B. The first support 21B is connected to at least two rotating modules 20M; specifically, the at least two rotating modules 20M are connected to different areas of the first support 21B. Similarly, the second support 22B is connected to at least two rotating modules 20M; specifically, the at least two rotating modules 20M are connected to different areas of the second support 22B. A first rotating door panel 21 is fixedly connected to the first support 21B, and a second rotating door panel 22 is fixedly connected to the second support 22B. Specifically, the first support 21B is located between the first rotating door panel 21 and a portion of the rotating modules 20M, and the second support 22B is located between the second rotating door panel 22 and a portion of the rotating modules 20M. In other embodiments, the first bracket 21B and the second bracket 22B may also be part of the rotating door panel of the rotating mechanism 20, that is, one of the rotating door panels may include the first rotating door panel 21 and the first bracket 21B, and the other rotating door panel may include the second rotating door panel 22 and the second bracket 22B.

[0201] Both the first bracket 21B and the second bracket 22B have hollowed-out areas. On the one hand, these hollowed-out areas can be used to avoid some structures on the rotating module 20M; on the other hand, these hollowed-out areas can also reduce the weight of the first bracket 21B and the second bracket 22B. A space B212 is also provided between the first bracket 21B and the second bracket 22B. This space B212 is used to accommodate part of the structure of the door panel swing arm 23 in the flattened state.

[0202] In one specific embodiment, the first support 21B may include a first overlapping portion 21B1, and the second support 22B may include a second overlapping portion 22B1. In the flattened state, the first overlapping portion 21B1 and the second overlapping portion 22B1 are located at the joint of the first support 21B and the second support 22B, and the projections of the first overlapping portion 21B1 and the second overlapping portion 22B1 along the length direction of the rotating mechanism 20 at least partially overlap. The arrangement of the first overlapping portion 21B1 and the second overlapping portion 22B1 can avoid poor support for the bent portion of the flexible screen caused by a long gap at the joint of the first rotating door panel 21 and the second rotating door panel 22. Figure 46 and Figure 47As shown, there are two of each of the first overlapping portion 21B1 and the second overlapping portion 22B1, which can form a support structure within the relatively long gap at the joint of the first rotating door panel 21 and the second rotating door panel 22. In the unfolded state, the first overlapping portion 21B1 and the second overlapping portion 22B1 jointly support the joint of the first rotating door panel 21 and the second rotating door panel 22. In this design, the joint of the first rotating door panel 21 and the second rotating door panel 22 is a straight seam structure. For the first rotating door panel 21 and the second rotating door panel 22, their structural form is simpler. For example, they only need to be designed as rectangular plate structures. There is no need to set an overlapping structure on the first rotating door panel 21 and the second rotating door panel 22. Instead, the structural stability of the joint position is ensured by the overlapping structure on the first bracket 21B and the second bracket 22B.

[0203] In other embodiments, overlapping structures may be provided on the first rotating door panel 21 and the second rotating door panel 22, while no overlapping structures may be provided on the first bracket 21B and the second bracket 22B. Alternatively, overlapping structures may be provided on the first rotating door panel 21 and the second rotating door panel 22, as well as on the first bracket 21B and the second bracket 22B.

[0204] See Figure 46 and Figure 47 In the flattened state, a complete, seamless seam is formed at the joint between the first rotating door panel 21 and the second rotating door panel 22. A seamless seam means that no gaps, openings, hollow areas, or clearance areas are required at the joint between the first rotating door panel 21 and the second rotating door panel 22; the first rotating door panel 21 and the second rotating door panel 22 can completely conceal all structural features of the rotating module 20M. In one embodiment, the seam at the joint between the first rotating door panel 21 and the second rotating door panel 22 can be a linear outline formed by splicing the first rotating door panel 21 and the second rotating door panel 22, and may not be a solid gap structure. That is, the joint between the first rotating door panel 21 and the second rotating door panel 22 can be formed by mutual contact or overlap to create a tight closed state. In one embodiment, the joint between the first rotating door panel 21 and the second rotating door panel 22 may not be in contact with each other. That is, a small gap is formed between the edges of the first rotating door panel 21 and the second rotating door panel 22. This small gap allows airflow between the top and bottom of the first rotating door panel 21 and the second rotating door panel 22 in the flattened state. This small gap may be due to assembly tolerances or design tolerances, and is not intended to avoid other structural features. The small size of this gap does not affect the support of the flexible display screen.

[0205] In one specific embodiment, the joint between the first rotating door panel 21 and the second rotating door panel 22 forms a straight seam, that is, the first rotating door panel 21 includes a first straight edge 215, the second rotating door panel 22 includes a second straight edge 225, and the first straight edge 215 and the second straight edge 225 can contact each other with a small gap between them.

[0206] The first rotating door panel 21 and the door panel swing arm 23 are fixedly connected. Specifically, the first rotating door panel 21 and the door panel swing arm 23 are an integral structure, or the first rotating door panel 21 and the door panel swing arm 23 are fixedly connected by fasteners. Similarly, the second rotating door panel 22 and the door panel swing arm 23 are fixedly connected. Specifically, the second rotating door panel 22 and the door panel swing arm 23 are an integral structure, or the second rotating door panel 22 and the door panel swing arm 23 are fixedly connected by fasteners. This design allows the first rotating door panel 21 and the second rotating door panel 22 to rotate synchronously relative to the main shaft 1 with the door panel swing arm 23, thereby realizing the flattening and folding of the folding device. The first rotating door panel 21 and the second rotating door panel 22 can be regarded as having a direct rotational connection with the main shaft 1, without the need for an intermediate transmission structure. This ensures smoother movement of the first rotating door panel 21 and the second rotating door panel 22 during flattening and folding, and the simple structure is conducive to the miniaturization design of the folding device.

[0207] The top cover 11 is a structural component of the rotating mechanism 20 that faces away from the flexible display screen's bent portion. The top cover 11 shields and protects the internal structure of the rotating mechanism 20. The top cover 11 is fixedly connected to all rotating modules 20M. The inner surface of the top cover 11 includes at least two mounting areas 115, each corresponding to one of the rotating modules 20M. The mounting areas 115 are used to connect the rotating modules 20M. A connection area 116 is located between adjacent mounting areas 115. This connection area 116 corresponds to a wiring space, and the connecting portion of the flexible circuit board can be fixedly connected to the connection area 116. This modular design facilitates assembly and design, and the wiring space between adjacent rotating modules also benefits the arrangement of flexible circuit boards in electronic devices.

[0208] Figure 48 An exploded view of the rotating module 20M in one direction of a folding device provided in one embodiment. Figure 49 An exploded view from another direction of the rotating module 20M in a folding device provided in one embodiment. (See also...) Figure 48 and Figure 49One embodiment of the rotating module 20M includes a main inner shaft 12, a door panel swing arm 23, a first housing connecting rod 24, a second housing connecting rod 25, and a synchronous damping element 7. There are two door panel swing arms 23. One door panel swing arm 23 is fixedly connected to a first rotating door panel 21, and the other door panel swing arm 23 is fixedly connected to a second rotating door panel 22. Specifically, each door panel swing arm 23 may have two threaded holes. The door panel swing arm 23 and the first bracket 21B can be fixedly connected by screws engaging with the threaded holes, and the door panel swing arm 23 and the second bracket 22B can be fixedly connected by screws engaging with the threaded holes. The door panel swing arm 23 is rotatably connected to the main inner shaft 12. In one embodiment, the door panel swing arm 23 and the main inner shaft 12 can be rotatably connected by the engagement of an arc-shaped arm and an arc-shaped groove. The door panel swing arm 23 includes a first rotating part 231, and the main inner shaft 12 includes a second rotating part 131. The first rotating part 231 has an arc-shaped arm structure, and the second rotating part 131 has an arc-shaped groove structure. The first rotating part 231 and the second rotating part 131 are rotatably connected. One door panel swing arm 23 is movably connected to the first housing connecting rod 24 (the two can be rotatably connected by the arc-shaped arm and arc-shaped groove, or by the rotating shaft and shaft hole, or by the sliding block and slide groove). The other door panel swing arm 23 is movably connected to the second housing connecting rod 25 (the two can be rotatably connected by the arc-shaped arm and arc-shaped groove, or by the rotating shaft and shaft hole, or by the sliding block and slide groove). Figure 48 and Figure 49 In the illustrated embodiment, the door panel swing arm 23 includes an arc-shaped groove 236, the first housing connecting rod 24 is provided with a first arc-shaped block 246, and the second housing connecting rod 25 is provided with a second arc-shaped block 256. The arc-shaped groove 236 and the first arc-shaped block 246 cooperate to achieve a movable connection between the first rotating door panel 21 and the first housing connecting rod 24. The arc-shaped groove 236 and the second arc-shaped block 256 achieve a movable connection between the second rotating door panel 22 and the second housing connecting rod 25. It is understood that an arc-shaped block can also be provided on the door panel swing arm 23, and an arc-shaped groove can be provided on the first housing connecting rod 24 and the second housing connecting rod 25.

[0209] The synchronous damping component 7 includes a first transmission link 71, a second transmission link 72, and a transmission module 73 rotatably connected to the main inner shaft 12 of the main shaft 1. Each of the first transmission link 71 and the second transmission link 72 includes a sliding end 711 and a rotating end 712. The rotating end 712 of the first transmission link 71 and the second transmission link 72 cooperates with the transmission module 73. The sliding end 711 of the first transmission link 71 is slidably connected to a first housing link 24, which is fixed to the first housing of the folding device of the electronic device. The sliding end 711 of the second transmission link 72 is slidably connected to a second housing link 25, which is fixed to the second housing of the folding device of the electronic device. Figure 46 , Figure 47 and Figure 48 In the illustrated embodiment, in the flattened state, along the length direction perpendicular to the main shaft 1 (top cover 11), the transmission module 73 is directly opposite the docking position of the first rotating door panel 21 and the second rotating door panel 22. That is, the docking position of the first rotating door panel 21 and the second rotating door panel 22 does not have a hollow structure (which can be understood as a notch structure) to avoid the synchronous damping member 7. It can also be understood that in the flattened state, the transmission module 73 is located between the docking position of the first rotating door panel 21 and the second rotating door panel 22 and the main inner shaft 12. The docking position of the first rotating door panel 21 and the second rotating door panel 22 falls within the vertical projection range of the transmission module 73 on the first rotating door panel 21 and the second rotating door panel 22.

[0210] The sliding fit structure between the sliding end 711 of the first transmission link 71 and the first housing link 24, and the sliding fit structure between the sliding end 711 of the second transmission link 72 and the second housing link 25 are the same as described above. They can all achieve sliding connection through the cooperation of the guide flange 701 and the guide groove 241, and will not be described in detail here.

[0211] In some embodiments, the rotating ends 712 of the first transmission link 71 and the second transmission link 72 may both include toothed structures for meshing with the gear set 73. The first transmission link 71 and the second transmission link 72 have the same structure and are symmetrically distributed on both sides of the gear set 73 to achieve synchronous movement of the first housing and the second housing of the folding device during unfolding and folding. In some embodiments, the rotating end 712 of the first transmission link 71 and the rotating end 712 of the second transmission link 72 may not include a toothed structure. The rotating end 712 of the first transmission link 71 may be fixed to the rotating shaft of the rotating end 712. A gear may be sleeved on the rotating end 712 of the first transmission link 71 and the rotating shaft of the rotating end 712. The gear is fixedly connected to the rotating shaft of the rotating end 712. The rotating end 712 of the first transmission link 71 meshes with the gear set 73 through the gear. When the rotating end 712 of the first transmission link 71 rotates, the gear rotates synchronously and meshes with the gear set 73 and rotates synchronously. The design of the second transmission link 72 is the same as or similar to that of the second transmission link 71, thereby realizing the synchronous rotation of the first transmission link 71 and the second transmission link 72.

[0212] Figure 50 and Figure 51 This is a cross-sectional view of the rotating mechanism of a folding device for an electronic device according to one embodiment of this application, wherein, Figure 50 for Figure 45 The cross-section at position P1-P1 in the embodiment shown is shown. Figure 51 for Figure 45 The cross-section at position P2-P2 in the embodiment shown. Figure 50 This is a cross-sectional view of the synchronous damper at position 7. Figure 51 This is a cross-sectional view of the door panel swing arm at position 23. (See reference...) Figure 50In one embodiment, the transmission module 73 is a gear set architecture, comprising multiple meshing gears, the number of which is an even number, to achieve synchronous movement of the first housing and the second housing during unfolding or folding. In a specific embodiment, the transmission module 73 may consist of four gears, including a first edge gear 731, a first intermediate gear 732, a second intermediate gear 733, and a second edge gear 734 arranged along a first direction F1 and meshing sequentially. The first direction F1 is the direction in which the first rotating door panel (21) and the second rotating door panel (22) are arranged in the flattened state. The first edge gear 731 meshes with the rotating end 712 of the first transmission link 71, and the second edge gear 734 meshes with the rotating end 712 of the second transmission link 72. In one embodiment, in the flattened state, the distance between the rotation center of the rotating end 712 of the first transmission link 71 and the first rotating door plate 21 is less than the distance between the rotation center of the first edge gear 731 and the first rotating door plate 21; the distance between the rotation center of the rotating end 712 of the second transmission link 72 and the second rotating door plate 22 is less than the distance between the rotation center of the second edge gear 734 and the second rotating door plate 22; and the distance between the rotation center of the first edge gear 731 and the first rotating door plate 21 and the distance between the rotation center of the second edge gear 734 and the second rotating door plate 22 are the same.

[0213] See Figure 50 In the flattened state, the projection of the first intermediate gear 732 onto the plane of the first rotating door plate 21 is at least partially located on the first rotating door plate 21, and the projection of the second intermediate gear 733 onto the plane perpendicular to the second rotating door plate 22 is at least partially located on the second rotating door plate 22. The meshing position between the first intermediate gear 732 and the second intermediate gear 733 can be directly opposite the joint position at the mating point between the first rotating door plate 21 and the second rotating door plate 22. In one embodiment, the first edge gear 731, the first intermediate gear 732, the second intermediate gear 733, and the second edge gear 734 can be gear structures of the same size. During the assembly of the transmission module 73, there is no need to consider the positional arrangement of each gear in the transmission module 73, because all gears in the transmission module 73 have the same structure, and any interchange of their positions will not affect the structural form and operating principle of the assembled synchronous damping component 7.

[0214] For other implementation trial methods, please refer to Figure 50AThe synchronous damping component 7 includes a first transmission link 71 and a second transmission link 72, and a transmission module 73 disposed between the first transmission link 71 and the second transmission link 72. This transmission module 73 can be a conveyor belt structure with a toothed structure on its outer surface. The transmission module 73 can mesh with the rotating end 712 of the first transmission link 71, and can also synchronously mesh with the rotating end 712 of the second transmission link 72. In one embodiment, a transmission gear can be provided between the conveyor belt and one of the rotating ends to achieve synchronous movement of the first and second housings during the flattening and folding processes.

[0215] In other embodiments, the transmission module 73 (e.g., the structure of a conveyor belt) and the rotating end 712 of the first transmission link 71 can also achieve motion transmission through frictional engagement, and the transmission module (e.g., the structure of a conveyor belt) and the rotating end 712 of the second transmission link 72 can also achieve motion transmission through frictional engagement.

[0216] In summary, the transmission module 73 defined in this application can be a gear set structure, a conveyor belt structure, or other structures with transmission functions, such as a linkage structure. This application does not limit these types of structures and uniformly refers to them as transmission modules.

[0217] See Figure 51 The door panel swing arm 23 and the first rotating door panel 21 are fixedly connected. It can be seen that a portion of the door panel swing arm 23 passes through the gap space B212 between the first bracket 21B and the second bracket 22B and contacts the first rotating door panel 21. Therefore, the gap space B212 between the first bracket 21B and the second bracket 22B can be used to accommodate a portion of the door panel swing arm 23. Similarly, the door panel swing arm 23 and the second rotating door panel 22 are fixedly connected to the second bracket 22B. It can be seen that a portion of the door panel swing arm 23 passes through the gap space B212 between the first bracket 21B and the second bracket 22B and contacts the second rotating door panel 22. Therefore, the gap space B212 between the first bracket 21B and the second bracket 22B can be used to accommodate a portion of the door panel swing arm 23. In the flattened state, the door panel swing arm 23 includes a butt joint support surface 238, which is located at the joint position of the first rotating door panel 21 and the second rotating door panel 22. Part of the butt joint support surface 238 contacts the first rotating door panel 21, and part of the butt joint support surface 238 contacts the second rotating door panel 22. This solution can improve the structural stability of the first rotating door panel 21 and the second rotating door panel 22 in the flattened state. Figure 51 As shown, the door panel swing arm 23 is connected between the main inner shaft 12 and the first rotating door panel 21 and the second rotating door panel 22, realizing a continuous solid structure connection between the main inner shaft 12 and the first rotating door panel 21 and the second rotating door panel 22, which can improve the structural stability of the folding device in the flattened state.

[0218] Figure 52 , Figure 53 and Figure 54 The diagram shows a perspective view of the rotating mechanism 20 in its folded state and cross-sectional views from two different positions. Figure 53 for Figure 52 The cross-section at position P3-P3 in the illustrated embodiment. Figure 54 for Figure 52 The cross-section at position P4-P4 in the illustrated embodiment. In one embodiment, the first rotating door panel 21 includes a first support surface 21S1, and the second rotating door panel 22 includes a second support 22S1. Both the first support surface 21S1 and the second support 22S1 face the flexible display screen and are used to support the flexible display screen in the flattened state of the rotating mechanism 20. See also Figure 52 , Figure 53 and Figure 54 When the rotating mechanism 30 is in the folded state, the plane containing the first support surface 21S1 and the plane containing the second support surface 22S1 form a first included angle A. A screen-accommodating space 900 is formed between the first rotating door panel 21 and the second rotating door panel 22. Specifically, the first support surface 21S1, the main inner shaft 12, and the second support surface 22S1 together surround and form the screen-accommodating space 900. This screen-accommodating space 900 is used to accommodate the bent portion of the flexible display screen, which naturally bends into a teardrop shape within this space. Specifically, by limiting the included angle between the first support surface 21S1 and the second support surface 22S1 to the first included angle A when the rotating mechanism 20 is in the folded state, this application ensures that neither the first rotating door panel 21 nor the second rotating door panel 22 exerts any force on the flexible display screen 200, allowing the flexible display screen 200 to be in a naturally bent state. That is, the flexible display screen is not subjected to any pulling or pushing forces when bent, which helps to improve the lifespan of the flexible display screen. In one embodiment, the flexible display screen and the two rotating door panels are not fixedly connected, but they can still make natural contact in the folded state. Specifically, there is no connection between the first rotating door panel 21 and the flexible display screen 200, and no connection between the second rotating door panel 22 and the flexible display screen 200. A portion of the flexible display screen contacts the first rotating door panel 21, and a portion of the flexible display screen contacts the second rotating door panel 22. In other embodiments, the flexible display screen and the two rotating door panels 21 and 22 can be connected, for example, by adhesive bonding. However, in the folded state, the connection points between the flexible display screen and the two rotating door panels are not subjected to force, thus ensuring that the flexible display screen naturally bends into a teardrop shape when bent.

[0219] See Figure 53 and Figure 54The rotation centers of the rotating ends 712 of the first transmission link 71 and 72 of the second transmission link 72 are both located outside the range of the first included angle A. This solution achieves a structure that eliminates the need for notches or holes in the first rotating door panel 21 and the second rotating door panel 22 to avoid the corresponding transmission links (first transmission link 71, second transmission link 72). When flattened, the first rotating door panel 21 and the second rotating door panel 22 can form a complete plate-like structure. This complete plate-like structure can shield the synchronous damping element 7, providing better support for the flexible display screen and improving the structural stability of the electronic device.

[0220] In one embodiment, the main inner shaft 12 includes a clearance surface 121. The clearance surface 121 is located on the surface of the main inner shaft 12 facing the accommodating space 900 and is concave. Specifically, the clearance surface 121 is an arc-shaped concave surface. During unfolding and folding, the clearance surface 121 is used to avoid the first rotating door panel 21 and the second rotating door panel 22. Figure 52 and Figure 53 As shown, in the folded state, the edges of the first rotating door panel 21 and the second rotating door panel 22 are located at the edge of the clearance surface 121. The edges of the first rotating door panel 21 and the second rotating door panel 22 can contact the clearance surface 121 or maintain a small gap.

[0221] See Figure 54In one embodiment, with the rotating mechanism 20 in its folded state, the rotation center of the rotating end 712 of the first transmission link 71 is located on the side of the first rotating door panel 21 opposite to the second rotating door panel 22, and the rotation center of the rotating end 712 of the second transmission link 72 is located on the side of the second rotating door panel 22 opposite to the first rotating door panel 21. In another embodiment, with the rotating mechanism 20 in its folded state, the rotation center of the rotating end 712 of the first transmission link 71 is located on the side of the extension surface of the first rotating door panel 21 opposite to the extension surface of the second rotating door panel 22, and the rotation center of the rotating end 712 of the second transmission link 72 is located on the side of the extension surface of the second rotating door panel 22 opposite to the extension surface of the first rotating door panel 21. This can be understood as the rotation center of the rotating end 712 of the first transmission link 71 being located on the side of the first rotating door panel 21 (or its extension surface) opposite to the screen-accommodating space, and the rotation center of the rotating end 712 of the second transmission link 72 being located on the side of the second rotating door panel 22 (or its extension surface) opposite to the screen-accommodating space. This application defines the positional relationship between the rotation center of the rotating end 712 of the first transmission link 71 and the first rotating door panel 21, and the positional relationship between the rotation center of the rotating end 712 of the second transmission link 72 and the second rotating door panel 22, so that the arrangement of the first transmission link 71 and the second transmission link 72 does not affect the structural integrity of the first rotating door panel 21 and the second rotating door panel 22. That is, it is not necessary to provide a notch or hole on the first rotating door panel 21 and the second rotating door panel 22 to avoid the corresponding transmission link.

[0222] In one embodiment, the rotation center of the rotating end 712 of the first transmission link 71 is the first center 7121, and the rotation center of the rotating end 712 of the second transmission link 72 is the second center 7122. In the folded state, the vertical distance between the first center 7121 and the second center 7122 (or the distance in the first direction F1) is greater than the maximum distance between the first rotating door panel (21) and the second rotating door panel (22) in the first direction F1. The first direction F1 is the direction in which the first rotating door panel (21) and the second rotating door panel (22) are arranged in the flattened state. The first direction F1 is also the direction from the first center 7121 toward the second center 7122, and it is also the extension direction of the vertical connection between the first center 7121 and the second center 7122. The first direction F1 is also the direction from the first center 7121 toward the second center 7122. This solution limits the distance between the rotation centers of the first transmission link 71's rotating end 712 and the second transmission link 72's rotating end 712. Since the distance between the first center 7121 and the second center 7122 is greater than the maximum distance between the first rotating door plate 21 and the second rotating door plate 22 in the first direction F1, the specific positions of the rotating ends 712 of the first transmission link 71 and the second transmission link 72 can be limited. This eliminates the need for notches or holes in the first and second rotating door plates 21 and 22 to avoid the corresponding transmission links. When flattened, the first and second rotating door plates 21 and 22 can form a complete plate-like structure. This complete plate-like structure can shield the synchronous damping element 7, providing better support for the flexible display screen and improving the structural stability of the electronic device.

[0223] In one embodiment, during the flattening and folding processes of the first rotating door panel 21 and the second rotating door panel 22, the central axis of the rotating end 712 of the first transmission link 71 (i.e., the axis of rotation connecting the first transmission link 71 relative to the main shaft 1) and the axis of rotation connecting the first rotating door panel 21 relative to the main shaft 1 are not collinear. Similarly, the central axis of the rotating end 712 of the second transmission link 72 (i.e., the axis of rotation connecting the second transmission link 72 relative to the main shaft 1) and the axis of rotation connecting the second rotating door panel 22 relative to the main shaft 1 are not collinear.

[0224] In one embodiment, during the flattening and folding process of the first rotating door panel 21 and the second rotating door panel 22, the axis of rotation of the door panel swing arm 23 provided on the first rotating door panel 21 relative to the main shaft 1 is located within the space enclosed by the first rotating door panel 21 (or the extension surface of the plane where the first rotating door panel 21 is located) and the second rotating door panel 22 (or the extension surface of the plane where the second rotating door panel 22 is located), and the axis of rotation of the door panel swing arm 23 provided on the second rotating door panel 22 relative to the main shaft 1 is located within the space enclosed by the first rotating door panel 21 (or the extension surface of the plane where the first rotating door panel 21 is located) and the second rotating door panel 22 (or the extension surface of the plane where the second rotating door panel 22 is located). The axis of rotation of the rotating end 712 of the first transmission link 71 relative to the main shaft 1 is located outside the space enclosed by the first rotating door plate 21 (or the extension surface of the plane where the first rotating door plate 21 is located) and the second rotating door plate 22 (or the extension surface of the plane where the second rotating door plate 22 is located). The axis of rotation of the rotating end 712 of the second transmission link 72 relative to the main shaft 1 is located outside the space enclosed by the first rotating door plate 21 (or the extension surface of the plane where the first rotating door plate 21 is located) and the second rotating door plate 22 (or the extension surface of the plane where the second rotating door plate 22 is located).

[0225] Since the first rotating door panel 21 and the second rotating door panel 22 are respectively provided with door panel swing arms 23, during the flattening and folding process, the axis of rotation of the first rotating door panel 21 relative to the main shaft 1 is located in the space enclosed by the first rotating door panel 21 (or the extension surface of the plane where the first rotating door panel 21 is located) and the second rotating door panel 22 (or the extension surface of the plane where the second rotating door panel 22 is located), and the axis of rotation of the second rotating door panel 22 relative to the main shaft 1 is located in the space enclosed by the first rotating door panel 21 (or the extension surface of the plane where the first rotating door panel 21 is located) and the second rotating door panel 22 (or the extension surface of the plane where the second rotating door panel 22 is located).

[0226] In some embodiments, the pivot of the rotational connection between the first rotating door panel 21 and the main shaft 1 is located within the screen-containing space 900, and the central axis of the rotating end 712 of the first transmission link 71 is located outside the screen-containing space. The pivot of the rotational connection between the second rotating door panel 22 and the main shaft 1 is located within the screen-containing space 900, and the central axis of the rotating end 712 of the second transmission link 72 is located outside the screen-containing space.

[0227] Figure 54A for Figures 1 to 43 The illustrated embodiment shows a cross-sectional view of the folding device of the electronic device in a folded state in one direction. (See also...) Figure 54AIn the folded state, the rotation center of the rotating end 712 of the first transmission link 71 can be located on the side of the first rotating door panel 21 (or the extension surface of the first rotating door panel 21) facing the second rotating door panel 22 (or the extension surface of the second rotating door panel 22), and the sliding end 711 of the first transmission link 71 can be located on the side of the first rotating door panel 21 away from the second rotating door panel 22; the rotation center of the rotating end 712 of the second transmission link 72 can be located on the side of the extension surface of the second rotating door panel 22 facing the extension surface of the first rotating door panel 21, and the sliding end 711 of the second transmission link 72 can be located on the side of the second rotating door panel 22 away from the first rotating door panel 21. In the folded state, the distance along the first direction F1 between the rotation center (first center 7211) of the rotating end 712 of the first transmission link 71 and the rotation center (second center 7212) of the rotating end 712 of the second transmission link 72 is less than the maximum distance along the first direction F1 between the first rotating door panel 21 and the second rotating door panel 22. The first rotating door panel 21 and the second rotating door panel 22 form a second included angle A-1, and the rotation centers of the rotating ends of the first transmission link 71 and the second transmission link 72 are both located within the range of the second included angle A-1. The folding device provided by this solution can provide a larger screen-accommodating space. Specifically, the first rotating door panel 21 is fixedly connected to the flexible display screen, and the second rotating door panel 22 is fixedly connected to the flexible display screen. The first rotating door panel 21 and the second rotating door panel 22 exert a pulling force on the flexible display screen, and the direction of the pulling force is away from the center position of the screen-accommodating space 900. This solution allows the flexible display screen to form a larger bending space when bent. In other words, this solution makes the radius of curvature of the bent part of the flexible display screen larger than the radius of curvature in the natural bending state. This solution helps to ensure the lifespan of the flexible display screen and enables electronic devices to adapt to different usage environments. For example, in harsh environments with high temperature and high humidity, the flexible display screen of the electronic device still has a good lifespan.

[0228] Figure 53 In the embodiment shown, the first included angle A is less than Figure 54A The second included angle A-1 in the illustrated embodiment is designed in such a way that... Figure 53 In the folding state of the embodiment shown, the folding device can define a suitable screen-accommodating space between the first rotating door panel 21 and the second rotating door panel 22, which can ensure that the flexible display screen naturally bends into a teardrop shape when bent.

[0229] Figure 54AThe structural design and positional arrangement of the first transmission link 71, the second transmission link 72, and the transmission module 73 provided in the illustrated embodiment are also applicable to... Figures 44-47 The specific implementation method is shown below.

[0230] Figure 54 The structural design and positional arrangement of the first transmission link 71, the second transmission link 72, and the transmission module 73 provided in the illustrated embodiment are also applicable to... Figures 1 to 43 The implementation method shown.

[0231] Figure 54A The illustrated embodiment provides the structural design and positional arrangement of the first transmission link 71, the second transmission link 72, and the transmission module 73, and Figure 54 The structural design and positional arrangement of the first transmission link 71, the second transmission link 72, and the transmission module 73 provided in the illustrated embodiment are all applicable to Figures 55-75 The specific implementation method is shown below.

[0232] Figures 55 to 65 The diagram shown is a schematic representation of the rotating mechanism of an electronic device and a folding device according to one embodiment of this application. The connection relationship between the rotating mechanism and the first housing, and the connection relationship between the rotating mechanism and the second housing, can be the same as in the aforementioned embodiments, and will not be described in detail here. The electronic device and folding device provided in this embodiment are flexible inward-folding structures with a three-panel design.

[0233] Figure 55 This is a perspective view of the rotating mechanism 20 of the folding device of an electronic device according to one embodiment of this application. Figure 56 This is a perspective view of the rotating mechanism 20 of the folding device of an electronic device provided in one embodiment of this application from another direction. Figure 57 This is an exploded view of the rotating mechanism 20 of the folding device of an electronic device according to one embodiment of this application, in one direction. Figure 58 This is an exploded view of the rotating mechanism 20 of the folding device of an electronic device provided in one embodiment of this application from another direction.

[0234] See Figure 55 , Figure 56 , Figure 57 and Figure 58The rotating mechanism 20 includes a first rotating door plate 21, a second rotating door plate 22, and a middle door plate 27. In the flattened state, the first rotating door plate 21 and the second rotating door plate 22 are distributed on both sides of the middle door plate 27, and the three are spliced ​​together to form a support structure for supporting the bent portion of the flexible display screen. The rotating mechanism includes a main shaft 1, a first housing connecting rod 24, and a second housing connecting rod 25. In the flattened state, the first housing connecting rod 24 and the second housing connecting rod 25 are distributed on both sides of the main shaft 1. In one embodiment, the middle door plate 27 and the main shaft 1 are fixedly connected. In other embodiments, the middle door plate 27 can also be slidably connected to the main shaft 1 so that the middle door plate 27 can be raised and lowered relative to the main shaft 1. In the electronic device, the middle door plate 27 and the main shaft 1 are stacked. In the flattened state, the middle door plate 27 is stacked between the main shaft 1 and the bent portion of the flexible circuit board, and the middle door plate 27 is used to support part of the bent portion.

[0235] One embodiment of this application provides a rotating mechanism 20 that may include at least two rotating modules 20M, see reference. Figure 57 and Figure 58 The number of rotating modules 20M can be three, and there can be a wiring space 20R between adjacent rotating modules 20M for the flexible circuit boards of electronic devices to pass through. This solution, through its modular design, incorporates wiring spaces between adjacent rotating modules, which facilitates the arrangement of flexible circuit boards in electronic devices.

[0236] Figure 59 An exploded view of the rotating module 20M in one direction of a folding device provided in one embodiment. Figure 60 An exploded view from another direction of the rotating module 20M in a folding device provided in one embodiment. (See also...) Figure 59 and Figure 60 In one embodiment, the rotating module 20M may include a main shaft 1, a first housing connecting rod 24, a second housing connecting rod 25, a door panel swing arm 23, and a synchronous damping element 7. The number of door panel swing arms 23 may be two, and the door panel swing arms 23 are rotatably connected to the main shaft 1. Specifically, Figure 59 and Figure 60In the illustrated embodiment, the door panel swing arm 23 and the main shaft 1 are rotatably connected via an arc-shaped arm and an arc-shaped groove. In this embodiment, one door panel swing arm 23 is fixedly connected to the first rotating door panel 21. Specifically, the door panel swing arm 23 and the first rotating door panel 21 can be fixedly connected via fasteners, and the door panel swing arm 23 and the first rotating door panel 21 can also be an integrally formed structure. Similarly, the other door panel swing arm 23 is fixedly connected to the second rotating door panel 22. This design allows the first rotating door panel 21 and the second rotating door panel 22 to rotate synchronously relative to the main shaft 1 with the door panel swing arm 23, thereby achieving the flattening and folding of the folding device. The first rotating door panel 21 and the second rotating door panel 22 can be considered to be directly rotatably connected to the main shaft 1, eliminating the need for an intermediate transmission structure. This ensures smoother movement of the first rotating door panel 21 and the second rotating door panel 22 during flattening and folding, and the simple structure facilitates the miniaturization of the folding device.

[0237] One of the door panel swing arms 23 is movably connected to the first housing connecting rod 24, and the other door panel swing arm 23 is movably connected to the second housing connecting rod 254. Other movable connections can be sliding connections with a groove and a slider, or rotating connections. The rotating connections can be in the form of an arc groove and an arc block, or in the form of a rotating shaft and a shaft hole.

[0238] The synchronous damping element 7 includes a first transmission link 71, a second transmission link 72, and a transmission module 73. The transmission module can be a gear set structure; in one embodiment, the gear set consists of two gears. Each of the first transmission link 71 and the second transmission link 72 includes a sliding end 711 and a rotating end 712. The rotating end 712 of the first transmission link 71 and the second transmission link 72 meshes with the transmission module 73. The sliding end 711 of the first transmission link 71 is slidably connected to a first housing link 24, which is fixed to the first housing of the folding device of the electronic device. The sliding end 711 of the second transmission link 72 is slidably connected to a second housing link 25, which is fixed to the second housing of the folding device of the electronic device.

[0239] Figure 61 and Figure 62 This is a cross-sectional view of the rotating mechanism of a folding device for an electronic device according to one embodiment of this application, wherein, Figure 61 for Figure 56 The cross-section at position P5-P5 in the illustrated embodiment. Figure 62 for Figure 56 A cross-section at position P6-P6 in the illustrated embodiment. Figure 61 This is a cross-sectional view of the synchronous damper at position 7. Figure 62This is a cross-sectional view of the door panel swing arm at position 23. (See reference...) Figure 61 In this embodiment, the middle door panel 27 is provided with a first clearance hole 271 and a second clearance hole 272. The first clearance hole 271 is located at the edge of the middle door panel 27 adjacent to the first rotating door panel 21, and the second clearance hole 272 is located at the edge of the middle door panel 27 adjacent to the second rotating door panel 22. In the flattened state, the rotating end 712 of the first transmission link 71 extends into the first clearance hole 271, and the rotating end 712 of the second transmission link 72 extends into the second clearance hole 272. In the flattened state, the surfaces of the middle door panel 27, the first rotating door panel 21, and the second rotating door panel 22 are coplanar and together form a combined support surface. This combined support surface supports the bent portion of the flexible display screen. Furthermore, a portion of the surface of the rotating end 712 of the first transmission link 71 located within the first clearance hole 271 also shares this combined support surface to support the flexible display screen. Similarly, a portion of the surface of the rotating end 712 of the second transmission link 72 located within the second clearance hole 272 also shares this combined support surface to support the flexible display screen. In this embodiment, the two gears of the transmission module 73 are assembled between the middle door panel 27 and the main shaft 1.

[0240] See Figure 62 The door panel swing arm 23 includes a first rotating part 231 and a sliding part 237. The arc-shaped groove formed between the middle door panel 27 and the main shaft 1 is the second rotating part. This second rotating part cooperates with the first rotating part 231, and the first rotating part 231 can slide within the second rotating part to form a rotational connection between the door panel swing arm 23 and the main shaft 1. The first housing connecting rod 24 is provided with a first sliding groove 247, and the second housing connecting rod 25 is provided with a second sliding groove 257. The sliding part 237 of the door panel swing arm 23 cooperates with the first sliding groove 247 to realize the movable connection between the first rotating door panel 21 and the first housing connecting rod 24. Similarly, the sliding part 237 of the other door panel swing arm 23 cooperates with the second sliding groove 257 to realize the movable connection between the second rotating door panel 22 and the second housing connecting rod 25.

[0241] Figure 63 , Figure 64 and Figure 65 The figures shown are a perspective view and two cross-sectional views of the rotating mechanism 20 of the folding device in the folded state according to one embodiment of this application. Figure 64 for Figure 63 The cross-section at position P7-P7 in the illustrated embodiment. Figure 65 for Figure 63 A cross-section at position P8-P8 in the illustrated embodiment. See also... Figure 63 , Figure 64 and Figure 65In one embodiment, by controlling the rotation angle or rotation trajectory of the door panel swing arm 23, it can be achieved that, in the folded state, the first rotating door panel 21 and the second rotating door panel 22 can be parallel or approximately parallel to each other. This parallelism between the first rotating door panel 21 and the second rotating door panel 22 in the folded state is suitable for scenarios where the first rotating door panel 21 and the second rotating door panel 22 are not or only weakly bonded to the flexible display screen. Specifically, "not bonded" can be understood as having no connection between the rotating door panel and the bent portion of the flexible display screen. "Weakly bonded" can be understood as the rotating door panel and the bent portion of the flexible display screen being bonded together with adhesive, but this adhesive has elastic deformation capabilities, and under external force, it can deform in any direction to adapt the posture of the rotating door panel to the posture of the bent portion of the flexible display screen. Both the first rotating door panel 21 and the second rotating door panel 22 can be perpendicular to the surface of the middle door panel 27 facing the flexible display screen.

[0242] See Figure 65 In the folded state, part of the first housing link 71 is located on the side of the first rotating door panel 21 away from the second rotating door panel 22, and part of the first housing link 71 extends from the top edge of the first rotating door panel 21 to the area between the middle door panel and the main shaft 1. Part of the second housing link 72 is located on the side of the second rotating door panel 22 away from the first rotating door panel 22, and part of the second housing link 72 extends from the top edge of the second rotating door panel 22 to the area between the middle door panel and the main shaft 1.

[0243] The following describes the specific movable connection scheme between the door panel swing arm 23 and the first housing link 24 (or the second housing link 25) in the rotation mechanism 20 of the folding device provided in this application. This will be described in detail through three specific embodiments. Figure 66 and Figure 67 This is one embodiment of an active connection scheme. Figure 68 and Figure 69 This is another embodiment of the active connection scheme. Figure 70 and Figure 71 This is yet another embodiment of the active connection scheme. These three different embodiments provide active connection schemes applicable to the rotation mechanism of the folding device provided in any of the foregoing possible implementations.

[0244] In some implementations, a fixing structure can be provided on the door panel swing arm 23, which is fixedly connected to the first rotating door panel 21. The door panel swing arm 23 is also slidably connected to the first slide groove 247 of the first housing connecting rod 24, and the door panel swing arm 23 is also rotatably connected to the main shaft (1).

[0245] See Figure 66 and Figure 67 , Figure 67 for Figure 66The cross-section at position P9-P9 in the illustrated embodiment. The door panel swing arm 23 includes a first rotating part 231, a sliding part 237, and a door panel connecting part 239 connecting the first rotating part 231 and the sliding part 237. In one embodiment, the first rotating door panel 21 can be fixedly connected to the door panel connecting part 239 by screws. The first rotating door panel 21 and the door panel connecting part 239 can also be fixedly connected by other means, such as magnetic attraction structure, glue fixation, etc., or the first rotating door panel 21 and the door panel connecting part 239 can also be an integrally formed structure. The first housing connecting rod 24 is provided with a first sliding groove 247, and the sliding part 237 is assembled in the first sliding groove 247. During the unfolding or folding process of the folding device, the sliding part 237 can slide in the first sliding groove 247. In the flattened state, the surfaces of the sliding part 237 and the door panel connecting part 239 used to assemble the rotating door panel are perpendicular to each other. Therefore, this solution is called an orthogonal sliding solution.

[0246] See Figure 68 and Figure 69 , Figure 69 for Figure 68 A cross-section at position P9-P9 in the illustrated embodiment. The active connection scheme of this embodiment and... Figure 66 and Figure 67 The difference in the active connection scheme of the illustrated embodiment lies in the specific shape of the first slide groove 247 and the sliding part 237. In this embodiment, the first slide groove 247 can be arc-shaped, and correspondingly, the sliding part 237 can also be an arc-shaped arm structure. The cooperation of the first slide groove 247 and the sliding part 237 can realize the rotational connection between the door panel swing arm 23 and the first housing connecting rod 24. The rotation axis of the rotational connection is a virtual axis, which can be understood as the center of the first slide groove 247 being the rotation center of the rotational connection.

[0247] See Figure 70 and Figure 71 , Figure 71 for Figure 70 A cross-section at position P9-P9 in the illustrated embodiment. Figure 70 and Figure 71 The active connection scheme of the embodiment shown is Figure 66 and Figure 67 The difference in the active connection scheme of the illustrated embodiment lies in the specific shape of the first groove 247 and the sliding part 237. Figure 70 and Figure 71In the illustrated embodiment, the sliding portion 237 is inclined relative to the surface of the door panel connecting portion 239 used for assembling the rotating door panel, and the sliding direction of the sliding portion 237 relative to the first slide groove 247 is inclined relative to the surface of the first rotating door panel 21 used for supporting the flexible display screen; therefore, this solution is called an inclined sliding solution. In one embodiment, the included angle between the sliding portion 237 and the surface of the door panel connecting portion 239 used for assembling the rotating door panel is less than 90 degrees. In other embodiments, the included angle between the sliding portion 237 and the surface of the door panel connecting portion 239 used for assembling the rotating door panel may also be greater than 90 degrees.

[0248] Figures 72-75 The diagram shown is a schematic diagram of the rotating mechanism of an electronic device and a folding device according to one embodiment of this application. This embodiment is similar to... Figure 55 The design schemes of the embodiments shown are similar, all of which are three-panel structures. Figure 72 This is a perspective view of the rotating mechanism 20 of a folding device for an electronic device provided in one embodiment. Figure 73 This is a perspective view of the rotating mechanism 20 of the folding device of an electronic device provided in one embodiment, from another direction. Figure 74 This is an exploded view of the rotating mechanism 20 of a folding device for an electronic device provided in one embodiment, in one direction. Figure 75 This is an exploded view of the rotating mechanism 20 of a folding device for an electronic device provided in one embodiment, from another direction. Figure 72 , Figure 73 , Figure 74 and Figure 75 The implementation methods shown are the same as Figure 55 The difference in the illustrated embodiment lies in the specific structure of the middle door panel 27. In this embodiment, the middle door panel 27 includes at least two assembly portions 2701 and a connecting portion 2702 connecting adjacent assembly portions 2701. Figure 74 and Figure 75 In the illustrated embodiment, the middle door panel 27 has a five-segment structure, comprising three assembly parts 2701 and two connecting parts 2702. At least two assembly parts 2701 and at least two rotating modules 20M are arranged in a one-to-one correspondence, with each assembly part 2701 assembled and connected to its corresponding rotating module 20M. It can be understood that the assembly parts 2701 are the portions of the middle door panel 27 used to cooperate with the rotating modules 20M, while the connecting parts 2702 simply connect adjacent assembly parts 2701 into a single unit, making the middle door panel 27 a complete door panel structure to facilitate support of the flexible display screen.

[0249] Figures 72-75 The other structures of the embodiments shown are all the same as those of the embodiments shown. Figure 55 The implementation methods shown are the same and will not be described again.

[0250] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0251] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or technological improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A rotating mechanism (20) for an electronic device (100) including a flexible display screen (200), characterized in that, The rotating mechanism includes a first rotating door panel (21), a second rotating door panel (22), a first door panel swing arm (23), a second door panel swing arm (23), a first housing connecting rod (24), a second housing connecting rod (25), and a main shaft (1). When the rotating mechanism (20) is in a flattened state, the first rotating door panel (21) and the second rotating door panel (22) are used to support a portion of the flexible display screen (200); when the rotating mechanism (20) is in a folded state, the first rotating door panel (21) and the second rotating door panel (22) form a screen-accommodating space for accommodating at least a portion of the flexible display screen (200). The first rotating door panel (21) and the first door panel swing arm (23) are fixedly connected and located between the first door panel swing arm and the flexible display screen. The second rotating door panel (22) and the second door panel swing arm (23) are fixedly connected and located between the second door panel swing arm and the flexible display screen. The first door panel swing arm (23) is rotatably connected to the main shaft (1). The second door panel swing arm (23) is rotatably connected to the main shaft (1). The first door panel swing arm (23) is rotatably connected to the first housing connecting rod (24). The second door panel swing arm (23) is rotatably connected to the second housing connecting rod (25).

2. The rotating mechanism (20) according to claim 1, characterized in that, The rotating mechanism (20) further includes a first transmission link (71), a second transmission link (72), and a transmission module (73) rotatably connected to the main shaft (1). Each of the first transmission link (71) and the second transmission link (72) includes a sliding end (711) and a rotating end (712). The rotating end of the first transmission link (71) and the rotating end of the second transmission link (72) respectively cooperate with the transmission module (73). The sliding end (711) of the first transmission link (71) is slidably connected to the first housing link (24), and the sliding end (711) of the second transmission link (72) is slidably connected to the second housing link (25).

3. The rotating mechanism (20) according to claim 2, characterized in that, When the rotating mechanism (20) is in the folded state: The rotation center of the rotating end (712) of the first transmission link (71) is located on the side of the first rotating door plate (21) away from the second rotating door plate (22), or on the side of the extension surface of the first rotating door plate (21) away from the extension surface of the second rotating door plate (22). The rotation center of the rotating end (712) of the second transmission link (72) is located on the side of the second rotating door plate (22) away from the first rotating door plate (21), or on the side of the extension surface of the second rotating door plate (22) away from the extension surface of the first rotating door plate (21).

4. The rotating mechanism (20) according to claim 2, characterized in that, The rotation center of the rotating end (712) of the first transmission link (71) is the first center (7121), and the rotation center of the rotating end (712) of the second transmission link (72) is the second center (7122). When the rotating mechanism (20) is in the folded state, the vertical distance between the first center (7121) and the second center (7122) is greater than the maximum distance between the first rotating door panel (21) and the second rotating door panel (22) in the first direction (F1). The first direction (F1) is the extension direction of the line connecting the first center (7121) and the second center (7122).

5. The rotating mechanism (20) according to claim 2, characterized in that, The first rotating door panel (21) includes a first support surface (21S1), and the second rotating door panel (22) includes a second support surface (22S1). When the rotating mechanism is in a folded state, the included angle between the plane containing the first support surface (21S1) and the plane containing the second support surface (22S1) is a first included angle (A). The rotation center of the rotating end (712) of the first transmission link (71) and the rotation center of the rotating end (712) of the second transmission link (72) are both located outside the range of the first included angle (A).

6. The rotating mechanism (20) according to claim 2, characterized in that, In the folded state: The rotation center of the rotating end (712) of the first transmission link (71) is located on the side of the first rotating door plate (21) facing the second rotating door plate (22), or the rotation center of the rotating end (712) of the first transmission link (71) is located on the side of the extension surface of the first rotating door plate (21) facing the extension surface of the second rotating door plate (22). The rotation center of the rotating end (712) of the second transmission link (72) is located on the side of the second rotating door plate (22) facing the first rotating door plate (21), or the rotation center of the rotating end (712) of the second transmission link (72) is located on the side of the extension surface of the second rotating door plate (22) facing the extension surface of the first rotating door plate (21).

7. The rotating mechanism (20) according to claim 2, characterized in that, The first rotating door panel (21) includes a first supporting surface, and the second rotating door panel (22) includes a second supporting surface. When the rotating mechanism (20) is in a folded state, the included angle between the plane where the first support surface is located and the plane where the second support surface is located is the second included angle (A-1), and the rotation centers of the rotating ends (712) of the first transmission link (71) and the second transmission link (72) are both located within the range of the second included angle (A-1).

8. The rotating mechanism (20) according to claim 2, characterized in that, The rotating mechanism (20) further includes a lifting plate (26), which is connected to the main shaft (1) and can move relative to the main shaft (1) in a direction away from or close to the main shaft (1). In the folded state, the lifting plate (26) together with the first rotating door panel (21) and the second rotating door panel (22) form the screen-accommodating space (900). The lifting plate (26) is closer to the main shaft (1) in the folded state than in the flattened state.

9. The rotating mechanism (20) according to claim 8, characterized in that, A sleeve (261) is provided on the side of the lifting plate (26) facing away from the flexible display screen (200). The spindle (1) is provided with a hole (161), through which at least a portion of the sleeve (261) passes. The rotating mechanism also includes a lifting spring (2611) and a fastener (2612). The lifting spring (2611) is sleeved on the sleeve (261). The end of the sleeve (261) away from the lifting plate (26) cooperates with the fastener (2612). The lifting spring (2611) is disposed between the fastener (2612) and the main shaft (1). One end of the lifting spring (2611) contacts the fastener (2612), and the other end of the lifting spring (2611) contacts the surface of the main shaft (1) facing away from the lifting plate (26).

10. The rotating mechanism (20) according to claim 8, characterized in that, The first rotating door panel (21) has a first notch (210), and the second rotating door panel (22) has a second notch (220). When the rotating mechanism (20) is in the flattened state, the first rotating door panel (21) and the second rotating door panel (22) are connected, and the first notch (210) and the second notch (220) form a cavity (230). When the rotating mechanism (20) is in the flattened state, the lifting plate (26) is at least partially disposed in the cavity (230).

11. The rotating mechanism (20) according to claim 9, characterized in that, The main shaft (1) includes a main inner shaft (12) and a top cover (11). The main inner shaft (12) is located between the top cover (11) and the lifting plate (26). The main inner shaft (12) is used to cooperate with the first transmission link (71), the second transmission link (72), the transmission module (73), the first door panel swing arm (23), the second door panel swing arm (23) and the lifting plate (26).

12. The rotating mechanism (20) according to claim 11, characterized in that, The rotating mechanism (20) also includes a stop (80); During the rotation of the rotating mechanism (20), the blocking member (80) rotates relative to the main inner shaft (12); When the rotating mechanism (20) is in the flattened state, the stop (80) abuts against the side of the lifting plate (26) facing the main shaft (1) and keeps the lifting plate (26) relatively away from the main shaft (1). When the rotating mechanism (20) is in the folded state, the stop (80) does not abut against the lifting plate (26) so that the lifting plate (26) is reset under the action of the lifting spring.

13. The rotating mechanism (20) according to claim 12, characterized in that, The rotating end (712) of the first transmission link (71) is rotatably connected to the main shaft (1) through the first pin (81) and can rotate together with the first pin (81). The rotating end (712) of the second transmission link (72) is rotatably connected to the main shaft (1) through the second pin (82) and can rotate together with the second pin (82). The number of the abutment (80) includes two, one of which is fixedly connected to the first pin (81) and the other is fixedly connected to the second pin (82).

14. The rotating mechanism (20) according to claim 13, characterized in that, The abutment (80) and the first pin (81) are integrally formed, or the abutment (80) is sleeved on the periphery of the first pin (81) and fixedly connected to the first pin (81).

15. The rotating mechanism (20) according to claim 13, characterized in that, The abutment (80) includes a mounting part (801) and a pressing part (803) protruding relative to the mounting part (801). The mounting part (801) is sleeved around the first pin (81) and fixedly connected to the first pin (81). The pressing part (803) is used to abut the lifting plate (26) when the rotating mechanism is in the flattened state.

16. The rotating mechanism (20) according to claim 15, characterized in that, The cross-sectional shape of the mating surface between the mounting part (801) and the first pin (81) is flat, polygonal, or irregular.

17. The rotating mechanism (20) according to claim 13, characterized in that, The first pin (81) has a stop (80) at each end, and the second pin (82) has a stop (80) at each end.

18. The rotating mechanism (20) according to claim 12, characterized in that, In the folded state of the rotating mechanism (20), at least part of the lifting plate (26) is located between the two abutments (80).

19. The rotating mechanism (20) according to claim 2, characterized in that, The transmission module (73) includes a gear set structure; or, the transmission module (73) includes a conveyor belt structure, or the transmission module (73) includes a linkage structure.

20. The rotating mechanism (20) according to any one of claims 1-5, characterized in that, When the rotating mechanism (20) is in a flattened state, a complete, hole-free seam is formed at the joint between the first rotating door panel (21) and the second rotating door panel (22).

21. The rotating mechanism (20) according to any one of claims 1-7, characterized in that, The rotating mechanism (20) also includes a middle door panel (27). In the flattened state of the rotating mechanism (20), the middle door panel (27) is connected between the first rotating door panel (21) and the second rotating door panel (22). In the folded state of the rotating mechanism (20), the middle door panel (27), the first rotating door panel (21), and the second rotating door panel (22) together form a screen space (900).

22. The rotating mechanism (20) according to claim 1, characterized in that, The first rotating door panel (21) and the first door panel swing arm (23) are an integral structure, or the first rotating door panel (21) and the first door panel swing arm (23) are fixedly connected by fasteners; The second rotating door panel (22) and the second door panel swing arm (23) are an integral structure, or the second rotating door panel (22) and the second door panel swing arm (23) are fixedly connected by fasteners.

23. The rotating mechanism (20) according to claim 1, characterized in that, The door panel swing arm (23) includes a first rotating part (231), the main shaft (1) includes a second rotating part (131), one of the first rotating part (231) and the second rotating part (131) includes an arc-shaped concave part (2311), and the other of the first rotating part (231) and the second rotating part (131) includes an arc-shaped convex part (1311). The arc-shaped concave part (2311) and the arc-shaped convex part (1311) are rotatably connected.

24. The rotating mechanism (20) according to claim 1, characterized in that, The first housing connecting rod (24) and the first door panel swing arm (23) are rotatably connected by a rotating shaft and a shaft hole, and the second housing connecting rod (25) and the second door panel swing arm (23) are rotatably connected by a rotating shaft and a shaft hole.

25. An electronic device (100), characterized in that, The device includes a flexible display screen (200), a first housing (10), a second housing (30), and a rotating mechanism (20) as described in any one of claims 1-24. The flexible display screen (200) includes a first non-bending portion (2001), a bending portion (2002), and a second non-bending portion (2003) arranged sequentially. The first non-bending portion (2001) is fixedly connected to the first housing (10), and the second non-bending portion (2003) is fixedly connected to the second housing (30). The first housing link (24) is fixedly connected to the first housing (10), and the second housing link (25) is fixedly connected to the second housing (30). The rotating mechanism (20) is used to support a portion of the flexible display screen (200) in the flattened state of the electronic device and to accommodate a portion of the flexible display screen (200) under the folding device of the electronic device.

26. The electronic device (100) according to claim 25, characterized in that, There is no connection between the first rotating door panel (21) and the flexible display screen (200), and there is no connection between the second rotating door panel (22) and the flexible display screen (200). A portion of the flexible display screen (200) contacts the first rotating door panel (21), and a portion of the flexible display screen (200) contacts the second rotating door panel (22).

27. The electronic device (100) according to claim 25, characterized in that, The first rotating door panel (21) is connected to the flexible display screen (200), and the second rotating door panel (22) is connected to the flexible display screen (200).

Images