A rotating shaft mechanism and electronic device

Abstract

This application provides a hinge mechanism and an electronic device. The hinge mechanism includes a main shaft, a first door panel and a second door panel of a rotating module. The rotating module includes a first rotating assembly, a second rotating assembly, a first housing fixing frame, and a second housing fixing frame. The first rotating assembly includes a first support arm, a first connector, and a first door panel fixing frame. The first connector is rotatably connected to both the first support arm and the first door panel fixing frame, and is rotatably or slidably connected to the main shaft. The second rotating assembly includes a second support arm, a second connector, and a second door panel fixing frame. The second connector is rotatably connected to both the second support arm and the second door panel fixing frame, and is rotatably or slidably connected to the main shaft. The first door panel is fixedly connected to the first door panel fixing frame, and the second door panel is fixedly connected to the second door panel fixing frame. This hinge mechanism is small in size and avoids squeezing or pulling the flexible display screen during folding and unfolding.

Description

Technical Field

[0001] This application relates to the field of electronic equipment technology, and in particular to a rotating shaft mechanism and electronic equipment. Background Technology

[0002] With the gradual maturation of flexible display technology, the way electronic devices display technology has undergone tremendous changes. Foldable flexible display mobile phones, foldable flexible display tablets, and wearable electronic devices with foldable flexible displays are a major direction for the evolution of future smart electronic devices.

[0003] Flexible displays are key components in foldable electronic devices, characterized by their continuous foldability. The hinge mechanism, as a crucial component enabling the folding function of foldable electronic devices, can flatten or bend the flexible display during the unfolding and closing process.

[0004] In current foldable electronic devices, as the size of the hinge mechanism continues to decrease, the space created by the hinge mechanism when the electronic device is in the closed state is increasingly insufficient to meet the bending requirements of the foldable part of the flexible display screen. This can easily lead to compression of the flexible display screen, making it difficult to guarantee the structural strength of the flexible display screen. Therefore, how to achieve miniaturization of the hinge mechanism while ensuring the structural reliability of the flexible display screen has become a major problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] This application provides a pivot mechanism and an electronic device to achieve a miniaturized design of the pivot mechanism and improve the structural reliability of the flexible display screen during the rotation of the pivot mechanism, thereby improving the structural reliability of the electronic device.

[0006] In a first aspect, this application provides a pivot mechanism that can be used in foldable electronic devices. The pivot mechanism is positioned opposite to the foldable portion of the flexible display screen of the electronic device, and the electronic device unfolds or closes via the pivot mechanism. Specifically, the pivot mechanism may include a main shaft, a rotating module, a first door panel, and a second door panel. The rotating module includes a first rotating assembly, a second rotating assembly, a first housing fixing frame, and a second housing fixing frame. The first and second housing fixing frames are respectively disposed on opposite sides of the main shaft. The first rotating assembly is located between the first and second housing fixing frames, and the second rotating assembly is also located between the first and second housing fixing frames. The first rotating assembly may include a first support arm, a first door panel fixing frame, and a first connecting member. The first support arm is rotatably connected to the main shaft and slidably connected to the first housing fixing frame. The first door panel fixing frame is rotatably connected to the second housing fixing frame. The first connecting member is located between the first support arm and the first door panel fixing frame, and is rotatably connected to both the first support arm and the first door panel fixing frame. Furthermore, the first connecting member is rotatably connected to the main shaft, or slidably connected to the main shaft, to restrict the movement trajectory of the first connecting member, thereby limiting the trajectory of the first door panel fixing frame pulling the first support arm through the first connecting member. The second rotating assembly may include a second support arm, a second door panel fixing frame, and a second connecting member. The second support arm is rotatably connected to the main shaft and slidably connected to the second housing fixing frame. The second door panel fixing frame is rotatably connected to the first housing fixing frame. The second connecting member is located between the second support arm and the second door panel fixing frame, and is rotatably connected to both the second and second support arms. Additionally, the second connecting member is rotatably connected to the main shaft, or slidably connected to the main shaft, to restrict the movement trajectory of the second connecting member, thereby limiting the trajectory of the second door panel fixing frame pulling the second support arm through the second connecting member. In the rotating shaft mechanism provided in this application, the first door panel may be located on the side of the first door panel fixing frame facing the flexible display screen, and the first door panel is fixedly connected to the first door panel fixing frame. The second door panel can be located on the side of the second door panel mounting bracket facing the flexible display screen, and the second door panel is fixedly connected to the second door panel mounting bracket.

[0007] Based on the aforementioned pivot mechanism of this application, during the process of the electronic device changing from an unfolded state to a closed state, the first housing fixing frame and the second housing fixing frame move towards each other. When the first housing fixing frame drives the first support arm to rotate clockwise around the main shaft, the first support arm can drive the first connecting member to move relative to the main shaft toward the first door panel fixing frame, thereby driving the first door panel fixing frame to rotate counterclockwise around the main shaft. When the second housing fixing frame drives the second support arm to rotate counterclockwise around the main shaft, the second support arm can drive the second connecting member to move relative to the main shaft toward the second door panel fixing frame, thereby driving the second door panel fixing frame to rotate clockwise around the main shaft. During the process of the electronic device changing from a closed state to an unfolded state, the first housing fixing frame and the second housing fixing frame move in opposite directions. When the first housing fixing frame drives the first support arm to rotate counterclockwise around the main axis, the first support arm can drive the first connecting piece to move relative to the main axis toward the first support arm, thereby driving the first housing fixing frame to rotate clockwise around the main axis. When the second housing fixing frame drives the second support arm to rotate clockwise around the main axis, the second support arm can drive the second connecting piece to move relative to the main axis toward the second housing fixing frame, thereby driving the second housing fixing frame to rotate counterclockwise around the main axis. This enables the folding and unfolding functions of the pivot mechanism.

[0008] Some existing hinge mechanisms require increased thickness of the rotating components connected to the main shaft to ensure stability. This results in both the main shaft and the hinge mechanism being very heavy. Forcibly thinning these components weakens their strength and poses a risk of detachment from the main shaft in the event of a drop, significantly impacting the reliability of the hinge mechanism and consequently reducing the lifespan of the electronic device. The hinge mechanism described in this application has a simplified structure. Through the aforementioned structural relationships, the first and second connecting members can be slidably or rotatably connected to the main shaft to link the first and second support arms, the first and second door panel fixing frames on both sides. Therefore, the thickness of the first and second connecting members does not need to be very large to pass through the main shaft. Furthermore, because the first and second connecting members are connected to the first (second) support arm and the first (second) door panel fixing frame respectively, they have sufficient length in the vertical axial direction, thus possessing sufficient strength to ensure the reliability of the hinge mechanism. In this way, the thickness of the main shaft and the overall machine can be reduced while maintaining the reliability of the rotating shaft mechanism, making the entire rotating shaft mechanism both thin and reliable.

[0009] In this application, the rotational connection between the first connecting member and the first support arm can be divided into a direct rotational connection and an indirect rotational connection. A direct rotational connection means that no other structure exists between the first connecting member and the first support arm; they are directly connected via a pivot. An indirect connection means that other possible connection structures can be provided between the first connecting member and the first support arm, and the first connecting member and the first support arm achieve rotational connection through rotational connections with these connection structures. For example, the first rotating assembly also includes a first connecting rod located between the first support arm and the first connecting member. The first support arm is rotatably connected to the first connecting rod, and the first connecting member is also rotatably connected to the first connecting rod. The axis of rotation of the first support arm relative to the first connecting rod is parallel but not coincident with the axis of rotation of the first connecting member relative to the first connecting rod. The pivot mechanism provided in this application, where the first connecting member and the first support plate are indirectly rotatably connected via the first connecting rod, can achieve the folding and unfolding functions of the pivot mechanism while also reducing its size.

[0010] In addition, the second rotating assembly also includes a second connecting rod, which is located between the second support arm and the second connecting member. The second support arm is rotatably connected to the second connecting rod, and the second connecting member is rotatably connected to the second connecting rod. The axis of rotation of the second support arm relative to the second connecting rod is parallel to but does not coincide with the axis of rotation of the second connecting member relative to the second connecting rod, thereby realizing an indirect rotating connection between the second connecting member and the second support arm. This can realize the folding and unfolding functions of the rotating shaft mechanism while also helping to reduce the size of the rotating shaft mechanism.

[0011] In this application, the first door panel fixing frame and the second housing fixing frame can be rotatably connected via a virtual axis. Specifically, the end of the first door panel fixing frame facing the second housing fixing frame can be provided with a first arc-shaped groove, and the second housing fixing frame is provided with a second arc-shaped rotating block. The second arc-shaped rotating block is installed in the first arc-shaped groove and can slide along the groove surface of the first arc-shaped groove. By rotatably connecting the first door panel fixing frame and the second housing fixing frame via a virtual axis, the structural reliability of the first door panel fixing frame and the second housing fixing frame can be ensured while their size can be reduced, thereby facilitating the miniaturization design of the hinge mechanism. In addition, the risk of squeezing or pulling on the flexible display screen can be reduced during the folding of electronic devices.

[0012] It is understandable that, for inward-folding electronic devices, when the first door panel fixing frame and the second housing fixing frame are rotatably connected via a virtual axis, the axis of rotation of the second housing fixing frame relative to the first door panel fixing frame is located on the side of the first door panel fixing frame facing the flexible display screen.

[0013] Furthermore, a second arc-shaped groove can be provided at the end of the second door panel fixing frame facing the first housing fixing frame, and a first arc-shaped rotating block is provided on the first housing fixing frame. The first arc-shaped rotating block is installed in the second arc-shaped groove and can slide along the groove surface of the second arc-shaped groove, thereby allowing the second door panel fixing frame and the first housing fixing frame to be rotatably connected via a virtual axis. This ensures the structural reliability of both the second door panel fixing frame and the first housing fixing frame while facilitating their size reduction, thus contributing to the miniaturization design of the pivot mechanism. Additionally, it reduces the risk of compression or stretching of the flexible display screen during the folding of the electronic device.

[0014] It is understandable that, for inward-folding electronic devices, when the second door panel fixing frame and the first housing fixing frame are rotatably connected via a virtual axis, the axis of rotation of the first housing fixing frame relative to the second door panel fixing frame is located on the side of the second door panel fixing frame facing the flexible display screen.

[0015] As described above, both the first and second connecting members are slidably connected to the main spindle. Specifically, the main spindle has a first track groove and a second track groove. The first connecting member includes a first slider, which is mounted in the first track groove and can slide relative to the main spindle along the first track groove to limit the movement trajectory of the first connecting member. The second connecting member includes a second slider, which is mounted in the second track groove and can slide relative to the main spindle along the second track groove to limit the movement trajectory of the second connecting member.

[0016] In addition, the first connecting member can also be rotatably connected to the main shaft, and the second connecting member can also be rotatably connected to the main shaft. Specifically, the main shaft is provided with a first track groove and a second track groove. The first track groove is an arc-shaped groove. The first connecting member includes a first slider, which is an arc-shaped slider. The first slider is installed in the first track groove and can rotate relative to the main shaft along the first track groove to limit the movement trajectory of the first connecting member. The second track groove is an arc-shaped groove. The second connecting member includes a second slider, which is an arc-shaped slider. The second slider is installed in the second track groove and can rotate relative to the main shaft along the second track groove to limit the movement trajectory of the second connecting member.

[0017] Whether the first and second connectors are slidably or rotatably connected to the main shaft, the first connector can move along a predetermined trajectory within the first track groove, and the second connector can move along a predetermined trajectory within the second track groove. This prevents uncontrolled movement of the first and second connectors during the folding and unfolding process, thus avoiding random movement of the first and second housing fixing frames and ensuring the structural and motion stability of the entire pivot mechanism. In some cases, through proper design of the first and second track grooves, the outer tangent of the pivot mechanism can remain constant throughout the folding and unfolding process. This allows the flexible display screen covering the surface of the pivot mechanism to maintain a relatively constant length, effectively preventing compression or stretching of the flexible display screen and improving its structural reliability, thereby enhancing the structural reliability of the electronic device.

[0018] When the first slider is an arc-shaped slider, the first connecting member may include two first sliders, which are respectively disposed at the two ends of the first connecting member along the axial direction of the rotating shaft mechanism. These two first sliders can be respectively installed in a first track groove to realize the rotation of the first connecting member relative to the main shaft, which can help improve the reliability of the rotational connection between the first connecting member and the main shaft. Furthermore, in this application, the specific shapes of the two first sliders of the first connecting member can be the same or different, as long as the axes of rotation of the two first sliders relative to the main shaft coincide, thereby improving the stability of the first connecting member's rotation around the main shaft.

[0019] When the second slider is an arc-shaped slider, the second connecting member includes two second sliders. Along the axial direction of the rotating shaft mechanism, the two second sliders are respectively disposed at the two ends of the second connecting member. These two second sliders can be respectively installed in a second track groove to realize the rotation of the second connecting member relative to the main shaft, which helps to improve the reliability of the rotational connection between the second connecting member and the main shaft. Furthermore, in this application, the specific shapes of the two second sliders of the second connecting member can be the same or different, as long as the axes of rotation of the two second sliders relative to the main shaft coincide, thereby improving the stability of the second connecting member's rotation around the main shaft.

[0020] In one possible implementation of this application, the pivot mechanism includes multiple rotating modules, with a first door panel fixedly connected to each first door panel fixing frame, and a second door panel fixedly connected to each second door panel fixing frame. This can help improve the integrity of the bearing surface provided by the pivot mechanism for the flexible display screen, thereby facilitating flat support for the flexible display screen.

[0021] In one possible implementation of this application, the rotating shaft mechanism further includes a synchronization component, which comprises a synchronization gear located between the first connecting member and the second connecting member along the axial direction of the rotating shaft mechanism. Furthermore, the end of the first connecting member facing the synchronization gear has a first gear surface, and the end of the second connecting member facing the synchronization gear has a second gear surface. The first gear surface meshes with the gear surface of the synchronization gear, and the second gear surface meshes with the gear surface of the synchronization gear. In this way, during the process of the electronic device moving from an unfolded state to a closed state, or from a closed state to an unfolded state, the first housing fixing frame and the second housing fixing frame can move synchronously and in opposite directions. This improves the stability of the rotating shaft mechanism's movement and effectively reduces the risk of the flexible display screen of the electronic device being subjected to instantaneous compression or tensile stress, thereby improving the structural reliability of the flexible display screen. In addition, the synchronization component provided in this application has a relatively simple structure and occupies less space in the rotating shaft mechanism, thus facilitating the miniaturization design of the rotating shaft mechanism.

[0022] In one possible implementation of this application, the first connecting member includes two first sliders. Along the axial direction of the rotating shaft mechanism, the two first sliders are respectively disposed at two ends of the first connecting member. The main shaft is provided with a first track groove corresponding to each first slider. Each first slider is mounted in its corresponding first track groove, and each first slider can slide or rotate relative to the main shaft along its corresponding first track groove. This improves the reliability of the rotational connection between the first connecting member and the main shaft. Furthermore, the first gear surface can be disposed on the first slider facing the synchronizing gear, which facilitates the integrated design of the rotating shaft mechanism, thereby reducing its size.

[0023] Similarly, the second connecting member includes two second sliders. Along the axial direction of the rotating shaft mechanism, the two second sliders are respectively disposed at both ends of the second connecting member. The main shaft has a second track groove corresponding to each second slider. Each second slider is mounted in its corresponding second track groove, and the second slider can slide or rotate relative to the main shaft along the second track groove. This improves the reliability of the rotational connection between the second connecting member and the main shaft. Furthermore, the second gear surface can be disposed on the second slider facing the synchronizing gear, which facilitates the integrated design of the rotating shaft mechanism, thereby enabling a reduction in the size of the rotating shaft mechanism.

[0024] In one possible implementation of this application, the rotating shaft mechanism further includes a damping module, which comprises a first rocker arm assembly, a second rocker arm assembly, an elastic component, and a first integrated cam. Along the axial direction of the rotating shaft mechanism, the first rocker arm assembly is located between the elastic component and the first integrated cam, and the second rocker arm assembly is located between the elastic component and the first integrated cam. The first rocker arm assembly may include a first rocker arm, a second rocker arm, and a first guide rod. The first and second rocker arms are rotatably connected to the main shaft, and are connected via the first guide rod. The first housing fixture is provided with a third track groove, in which the first guide rod is inserted and can slide along the third track groove. The second rocker arm assembly may include a third rocker arm, a fourth rocker arm, and a second guide rod. The third and fourth rocker arms are rotatably connected to the main shaft, and are connected via the second guide rod. The second housing fixture is provided with a fourth track groove, in which the second guide rod is inserted and can slide along the fourth track groove. Furthermore, the end face of the first rocker arm facing the first integrated cam is provided with a first cam surface, and the end face of the third rocker arm facing the first integrated cam is provided with a third cam surface. The first integrated cam includes a fifth cam surface facing the first rocker arm and a sixth cam surface facing the third rocker arm. Along the axial direction of the rotating shaft mechanism, under the elastic force of the elastic component, the first cam surface abuts against the fifth cam surface, and the third cam surface abuts against the sixth cam surface. Thus, during the rotation of the first housing fixing frame and the second housing fixing frame relative to the rotating shaft mechanism, when the inclined surfaces of the two abutting cam surfaces come into contact, a corresponding damping force can be generated. The presence of this damping force enables the electronic device to have a self-deploying function at the end of the unfolded state and a self-closing function at the end of the closed state. Furthermore, under the action of this damping force, the user can have a more noticeable tactile feedback when opening and closing the electronic device, thereby improving the user experience.

[0025] Additionally, the damping module may include a second integrated cam, with the first rocker arm assembly located between the first and second integrated cams, and the second rocker arm assembly located between the first and second integrated cams. A second cam surface is provided on the end face of the second rocker arm facing the second integrated cam, and a fourth cam surface is provided on the end face of the fourth rocker arm facing the second integrated cam. The second integrated cam includes a seventh cam surface facing the second rocker arm and an eighth cam surface facing the fourth rocker arm. Along the axial direction of the rotating shaft mechanism, under the elastic force of the elastic component, the second cam surface abuts against the seventh cam surface, and the fourth cam surface abuts against the eighth cam surface. This allows the rotating shaft mechanism to provide greater damping force, thereby improving the stability of electronic devices using this rotating shaft mechanism in the unfolded, closed, or intermediate states. Furthermore, it effectively improves the user's feel during the opening and closing of electronic devices, enhancing the user experience.

[0026] To rotatably connect the damping module to the main shaft, in one possible implementation of this application, the main shaft further includes a first mounting portion and a second mounting portion. Along the axial direction of the rotating shaft mechanism, the first mounting portion is located between a first rocker arm and a second rocker arm, which are rotatably connected to the first mounting portion via a first shaft. Along the axial direction of the rotating shaft mechanism, the second mounting portion is located between a third rocker arm and a fourth rocker arm, which are rotatably connected to the second mounting portion via a second shaft.

[0027] In addition, the damping module includes multiple washers. At least one washer is located between the first and second swing arms along the axial direction of the rotating shaft mechanism. Under the elastic force of the elastic component, the first and second swing arms press the at least one washer located between the first and second swing arms against the first mounting portion. Furthermore, at least one washer is located between the third and fourth swing arms along the axial direction of the rotating shaft mechanism. Under the elastic force of the elastic component, the third and fourth swing arms press the at least one washer located between the third and fourth swing arms against the second mounting portion. During the rotation of the first and second swing arm assemblies around the main shaft, relative rotation can occur between the contacting swing arms and the washers, thereby generating frictional resistance. This frictional resistance serves as a damping force that hinders the rotation of the first and second swing arm assemblies relative to the main shaft, thus increasing the damping force provided by the damping module.

[0028] In one possible implementation of this application, along the axial direction of the rotating shaft mechanism, at least one side of the first mounting portion is provided with a first slot, and at least one washer located between the first and second swing arms is engaged in the first slot. Furthermore, in the direction of rotation of the first swing arm assembly relative to the main shaft, at least one washer located between the first and second swing arms is relatively fixed to the first mounting portion. Along the axial direction of the rotating shaft mechanism, at least one side of the second mounting portion is provided with a second slot, and at least one washer located between the third and fourth swing arms is engaged in the second slot. Furthermore, in the direction of rotation of the second swing arm assembly relative to the main shaft, at least one washer located between the third and fourth swing arms is relatively fixed to the second mounting portion. This prevents the washer from rotating with the swing arm relative to the main shaft, thereby generating a more stable frictional force between the swing arm and the washer, thus improving the stability of the damping force provided by the damping module.

[0029] In this application, besides the design described above, in one possible implementation, the damping module also includes multiple gaskets. Each gasket is fitted onto the first and second shafts. At least a portion of at least one gasket is located between the first and second swing arms. Along the axial direction of the rotating shaft mechanism, under the elastic force of the elastic component, the first and second swing arms press at least a portion of the at least one gasket located between the first and second swing arms against the first mounting portion. Additionally, at least a portion of at least one gasket is located between the third and fourth swing arms. Along the axial direction of the rotating shaft mechanism, under the elastic force of the elastic component, the third and fourth swing arms press at least a portion of the at least one gasket located between the third swing arm and the second mounting portion against the second mounting portion. This restricts the rotation of each gasket relative to the first and second mounting portions by using the parallel first and second shafts, thereby generating a more stable frictional force between the swing arms and the gaskets, thus improving the stability of the damping force provided by the damping module.

[0030] Secondly, this application also provides an electronic device comprising a first housing, a second housing, a flexible display screen, and a rotating mechanism as described in the first aspect. The first and second housings are respectively disposed on opposite sides of the rotating mechanism. A first housing fixing frame is fixedly connected to the first housing, and a second housing fixing frame is fixedly connected to the second housing. The flexible display screen continuously covers the first housing, the second housing, and the rotating mechanism, and is fixedly connected to both the first and second housings. When the electronic device is in its unfolded state, the rotating mechanism, the first housing, and the second housing together provide flat support for the flexible display screen, thereby ensuring the integrity of the electronic device's shape in this unfolded state. During the process of the electronic device moving from the unfolded state to the closed state, the two housings rotate towards each other, causing the flexible display screen to rotate, effectively preventing deformation of the flexible display screen and reducing the risk of damage to the flexible display screen. Attached Figure Description

[0031] Figure 1 A schematic diagram of the electronic device provided in the embodiment of this application when it is in an unfolded state;

[0032] Figure 2 A schematic diagram of the structure of the electronic device provided in the embodiment of this application when it is in a closed state;

[0033] Figure 3 for Figure 1 Exploded view of the electronic device shown;

[0034] Figure 4 An exploded view of the rotating shaft mechanism provided in the embodiments of this application;

[0035] Figure 5 A partial structural schematic diagram of the rotating shaft mechanism provided in the embodiments of this application;

[0036] Figure 6 for Figure 5 An exploded view of the structure shown;

[0037] Figure 7 A schematic diagram illustrating the mating relationship between the first connector and the spindle provided in an embodiment of this application;

[0038] Figure 8 A cross-sectional view of the first connecting member of the rotating shaft mechanism provided in the embodiment of this application when the electronic device is in the unfolded state;

[0039] Figure 9 A cross-sectional view of the first connecting member of the rotating shaft mechanism provided in the embodiment of this application when the electronic device is in a closed state;

[0040] Figure 10 An exploded view of a partial structure of the rotating shaft mechanism provided in the embodiments of this application;

[0041] Figure 11 A schematic diagram illustrating the cooperation relationship between the first support arm and the first housing fixing frame provided in an embodiment of this application;

[0042] Figure 12 A schematic diagram illustrating the cooperation relationship between the first door panel fixing frame and the second housing fixing frame provided in an embodiment of this application;

[0043] Figure 13 A partial structural schematic diagram of the rotating shaft mechanism provided in the embodiments of this application;

[0044] Figure 14 Another exploded view of the rotating shaft mechanism provided in the embodiments of this application;

[0045] Figure 15 for Figure 14 A schematic diagram of the assembly structure of the rotating shaft mechanism shown;

[0046] Figure 16 for Figure 15 The cross-sectional view of the rotating shaft mechanism shown is taken when the electronic device is in the closed state.

[0047] Figure 17 for Figure 5 Another exploded view of the structure shown;

[0048] Figure 18 A schematic diagram illustrating the fit between the damping module and the spindle provided in an embodiment of this application;

[0049] Figure 19 A partial structural schematic diagram of the spindle provided in an embodiment of this application;

[0050] Figure 20A cross-sectional view of the rotating shaft mechanism provided in the embodiment of this application when the electronic device is in the unfolded state;

[0051] Figure 21 A cross-sectional view of the rotating shaft mechanism provided in the embodiment of this application when the electronic device is in a closed state;

[0052] Figure 22 This is another structural schematic diagram of the damping module provided in the embodiments of this application.

[0053] Figure label:

[0054] 1-Rotating shaft mechanism; 1a-Bearing surface; 1b-Third outer surface; 101-Rotating module; 1011-First rotating assembly;

[0055] 10111-First support arm; 101111-First clearance opening; 101112-First guide section; 10112-First door panel fixing frame;

[0056] 101121 - First protrusion; 101122 - First arc-shaped groove; 10113 - First connector; 101131 - First slider;

[0057] 101132 - Second sub-bearing surface; 101133 - Second clearance opening; 101134 - Third clearance opening; 101135 - First gear surface;

[0058] 10114 - First connecting rod; 10115 - First pivot; 10116 - Second pivot; 10117 - Third pivot; 10118 - Fourth pivot;

[0059] 1012-Second rotating assembly; 10121-Second support arm; 101211-Second guide part; 10122-Second door panel fixing frame;

[0060] 101221 - Second arc-shaped groove; 10123 - Second connector; 101231 - Second slider; 101232 - Third sub-bearing surface;

[0061] 101233 - Second gear surface; 10124 - Second connecting rod;

[0062] 1013-First housing fixing frame; 10131-First slide groove; 101311-First slide rail; 10132-First arc-shaped rotating block;

[0063] 10133 - Third trajectory slot;

[0064] 1014-Second housing fixing frame; 10141-Second slide groove; 101411-Second slide rail; 10142-Second arc-shaped rotating block;

[0065] 10143 - Fourth Track Slot;

[0066] 102-Spindle; 1021-First track groove; 1022-First mounting groove; 1023-Second track groove; 1024-Second mounting groove;

[0067] 1025 - First sub-bearing surface; 1026 - First mounting part; 10261 - First slot; 10262 - First mounting hole;

[0068] 102621 - First opening; 1027 - Second mounting part; 10271 - Second slot; 10272 - Second mounting hole;

[0069] 102721 - Second opening;

[0070] 103-Hinge back cover; 104-First door panel; 1041-First panel surface; 105-Second door panel; 1051-Second panel surface;

[0071] 106 - Connecting beam; 107 - Synchronization assembly; 1071 - Synchronization gear;

[0072] 108-Damping module; 1081-First rocker arm assembly; 10811-First rocker arm; 108111-First cam surface;

[0073] 10812 - Second rocker arm; 108121 - Second cam surface; 10813 - First guide rod; 1082 - Second rocker arm assembly;

[0074] 10821 - Third rocker arm; 108211 - Third cam surface; 10822 - Fourth rocker arm; 108221 - Fourth cam surface;

[0075] 10823 - Second guide rod; 1083 - First shaft; 1084 - Second shaft; 1085 - Gasket; 1086 - Elastic component;

[0076] 1087 - First integrated cam; 10871 - Fifth cam surface; 10872 - Sixth cam surface; 1088 - Second integrated cam;

[0077] 10881 - Seventh cam surface; 10882 - Eighth cam surface; 1089 - First limiting element; 10810 - Second limiting element;

[0078] 2-First housing; 2a-First support surface; 2b-First outer surface; 201-First receiving groove;

[0079] 3-Second housing; 3a-Second support surface; 3b-Second outer surface; 301-Second receiving groove;

[0080] 4- Flexible display screen. Detailed Implementation

[0081] To make the objectives, technical solutions, and advantages of this application clearer, the application will be described in further detail below with reference to the accompanying drawings. The terminology used in the following embodiments of this application is for the purpose of describing specific embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” “the,” and “this” are intended to also include expressions such as “one or more,” unless the context clearly indicates otherwise.

[0082] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0083] To facilitate understanding of the hinge mechanism provided in this application embodiment, its application scenarios are first described below. This hinge mechanism can be applied to, but is not limited to, foldable electronic devices such as mobile phones, personal digital assistants (PDAs), laptops, or tablets. When applying the hinge mechanism provided in this application embodiment to electronic devices, please refer to... Figure 1 , Figure 1 This is a schematic diagram of the electronic device provided in the embodiments of this application when it is in an unfolded state. In addition to the pivot mechanism 1, the electronic device may also include two housings and a flexible display screen. Figure 1 (Not shown in the image). For ease of description, the two housings can be named the first housing 2 and the second housing 3, respectively. The first housing 2 and the second housing 3 are located on opposite sides of the rotating shaft mechanism 1 and can rotate around the rotating shaft mechanism 1. This electronic device can be closed and opened according to different usage scenarios during use.

[0084] You can continue to refer to Figure 1 , Figure 1The structure of the first surface of the pivot mechanism 1, the first surface of the first housing 2, and the first surface of the second housing 3 is shown. In this unfolded state, the first surfaces of the pivot mechanism 1, the first surfaces of the first housing 2, and the second housing 3 can be connected to form a flat support surface. The first surface of the pivot mechanism 1 refers to the surface of the pivot mechanism 1 facing the flexible display screen, the first surface of the first housing 2 refers to the surface of the first housing 2 facing the flexible display screen, and the first surface of the second housing 3 refers to the surface of the second housing 3 facing the flexible display screen. For ease of description, in this application, the first surface of the pivot mechanism 1 can be defined as the bearing surface 1a of the pivot mechanism 1, the first surface of the first housing 2 as the first support surface 2a, and the first surface of the second housing 3 as the second support surface 3a.

[0085] Based on this, the flexible display screen can continuously cover the bearing surface 1a of the pivot mechanism 1, the first support surface 2a of the first housing 2, and the second support surface 3a of the second housing 3. The pivot mechanism 1 and the foldable portion of the flexible display screen are arranged opposite each other, and the flexible display screen can be fixedly connected to the first support surface 2a of the first housing 2 and the second support surface 3a of the second housing 3. The connection method can be, but is not limited to, adhesive bonding. Thus, when the electronic device is in a position such as... Figure 1 When in the unfolded state shown, the pivot mechanism 1, the first housing 2, and the second housing 3 can provide flat support for the flexible display screen.

[0086] In this application, the electronic device can be an inward-folding electronic device. Specifically, when the inward-folding electronic device is in a closed state, the flexible display screen is located inside the electronic device. Figure 2 This demonstrates the relative positional relationship between the rotating shaft mechanism 1 and the two housings when the electronic device is in the closed state. Figure 2 The diagram illustrates the structure of the second surface of the pivot mechanism 1, the second surface of the first housing 2, and the second surface of the second housing 3. The second surface of the pivot mechanism 1 refers to the surface of the pivot mechanism 1 facing away from the flexible display screen; the second surface of the first housing 2 refers to the surface of the first housing 2 facing away from the flexible display screen; the second surface of the second housing 3 refers to the surface of the second housing 3 facing away from the flexible display screen. Thus, the first and second surfaces of the pivot mechanism 1, the first and second surfaces of the first housing 2, and the second surface of the second housing 3 are arranged opposite to each other. In this application, the second surface of the pivot mechanism 1, the second surface of the first housing 2, and the second surface of the second housing 3 can be considered as the external surfaces of the electronic device. For ease of description, the second surface of the first housing 2 can be defined as the first external surface 2b, the second surface of the second housing 3 as the second external surface 3b, and the second surface of the pivot mechanism 1 as the third external surface 1b. It is understood that for an inward-folding electronic device, its external surfaces are exposed on the outside of the electronic device when the electronic device is in both the unfolded and closed states.

[0087] In this application, the first housing 2 and the second housing 3 are composed of Figure 1 The unfolded state shown Figure 2 The closed state shown, or by Figure 2 The closed state shown Figure 1 During the relative rotation of the unfolded state shown, the flexible display screen can be bent or flattened along with the first housing 2 and the second housing 3. Furthermore, it can be understood that the electronic device is composed of… Figure 1 The unfolded state shown Figure 2 The closed state shown, or by Figure 2 The closed state shown Figure 1 The unfolded state shown is the process of the first housing 2 and the second housing 3 rotating around the pivot mechanism 1. The pivot mechanism 1, as a key functional component in foldable electronic devices, is designed to correspond to the foldable portion of the flexible display screen; therefore, it plays a crucial role in... Figure 1 The support for the foldable portion of the flexible display in the unfolded state, and in... Figure 2 The closed state shown plays an important role in accommodating the foldable portion of the flexible display screen.

[0088] In its design, the hinge mechanism, to achieve its rotational function and prevent compression or stretching of the flexible display screen during the folding process of the electronic device, typically includes multiple interconnected connectors. The movement of these connectors, through mutual tension, propels the moving components along a predetermined trajectory. However, as the size of the hinge mechanism continues to decrease, the space it creates when the electronic device is closed becomes increasingly insufficient to meet the bending requirements of the foldable portion of the flexible display screen. This can easily lead to compression of the flexible display screen, compromising its structural strength. Furthermore, the reduction in the size of the hinge mechanism can also result in insufficient structural strength of the moving components, thus affecting the structural reliability of the hinge mechanism.

[0089] The hinge mechanism provided in this application aims to solve the aforementioned problems by optimizing the design of the rotating module used to achieve the rotation function within the hinge mechanism. This satisfies the miniaturization requirements of the hinge mechanism while improving its structural strength. Furthermore, by rationally designing the motion trajectory of the rotating module used to achieve the rotation function, the screen-enclosing space formed by the hinge mechanism can meet the bending requirements of the foldable portion of the flexible display screen when the electronic device is in a closed state. This avoids squeezing the flexible display screen, thereby improving its structural reliability and extending its service life. To facilitate understanding of the hinge mechanism provided in the embodiments of this application, its specific structure will be described in detail below with reference to the accompanying drawings.

[0090] Reference Figure 3 , Figure 3 for Figure 1 The exploded view of the electronic device shown is shown. The end of the first housing 2 facing the pivot mechanism 1 may be provided with a first receiving groove 201, and the end of the second housing 3 facing the pivot mechanism 1 may be provided with a second receiving groove 301. At least a portion of the pivot mechanism 1 is received in the first receiving groove 201 and connected to the first housing 2, and at least a portion of the pivot mechanism 1 is received in the second receiving groove 301 and connected to the second housing 3. The rotation of the pivot mechanism 1 enables the first housing 2 and the second housing 3 to move in opposite or opposing directions, thereby achieving the foldable function of the electronic device.

[0091] In this application, in order to realize the rotation function of the rotating shaft mechanism 1, the rotating shaft mechanism 1 may include a rotating module 101, as shown in the reference. Figure 4 , Figure 4 This is an exploded view of a rotating shaft mechanism provided in an embodiment of this application. This application does not limit the number of rotating modules 101 in the rotating shaft mechanism 1. The rotating shaft mechanism 1 may include only one rotating module 101 or multiple rotating modules 101. Figure 4 The rotating shaft mechanism 1 shown includes three rotating modules 101, which can be arranged at intervals along the axial direction of the rotating shaft mechanism 1. In this application, the axial direction of the rotating shaft mechanism 1 is... Figure 1 The first housing 2 and the second housing 3 shown are extending along the axis of rotation about the rotating shaft mechanism 1. It can be understood that in this application, by providing multiple rotating modules 101 in the rotating shaft mechanism 1, so that the first housing 2 and the second housing 3 are rotatably connected through the multiple rotating modules 101, the stability of the rotation of the first housing 2 and the second housing 3 of the electronic device relative to the rotating shaft mechanism 1 can be effectively improved.

[0092] You can continue to refer to Figure 4 The rotating mechanism 1 may further include a main shaft 102 and a rotating back cover 103. The rotating back cover 103 is located on the side of the main shaft 102 facing away from the flexible display screen, and the rotating back cover 103 is fixedly connected to the main shaft 102. The connection method may be, but is not limited to, welding or threaded connection. The rotating back cover 103 can serve as an external component of the rotating mechanism 1, and it can protect the various components inside the rotating mechanism 1. In addition, it can be understood that the external surface of the rotating back cover 103 can serve as the third external surface 1b of the rotating mechanism 1.

[0093] For a better understanding of the structure of the rotating module 101, please refer to... Figure 5 , Figure 5 This is a partial structural diagram of the rotating shaft mechanism 1 provided in an embodiment of this application, which can be used to illustrate the arrangement of a rotating module 101 in the rotating shaft mechanism 1. In this application, the rotating module 101 may include a first rotating component 1011 and a second rotating component 1012. Additionally, as... Figure 5 As shown, the main shaft 102 can serve as a load-bearing component for the first rotating assembly 1011 and the second rotating assembly 1012.

[0094] It is worth mentioning that, in the embodiments of this application, such as Figure 4 As shown, when there are multiple rotating modules 101, the rotating shaft mechanism 1 can be provided with a main shaft 102 for each rotating module 101, so that the first rotating component 1011 and the second rotating component 1012 of each rotating module 101 use the corresponding main shaft 102 as the bearing component, thereby making the arrangement of the rotating modules 101 more flexible. In some other possible embodiments of this application, when there are multiple rotating modules 101, the first rotating component 1011 and the second rotating component 1012 of the multiple rotating modules 101 can all use the same main shaft 102 as the bearing component, so as to improve the integration level of the rotating shaft mechanism 1, thereby improving the structural reliability of the rotating shaft mechanism 1.

[0095] Reference Figure 6 , Figure 6 for Figure 5 An exploded view of the structure shown is provided. In this application, the first rotating assembly 1011 may include a first support arm 10111, a first door panel fixing frame 10112, and a first connecting member 10113. The first connecting member 10113 is located between the first support arm 10111 and the first door panel fixing frame 10112. The first connecting member 10113 is rotatably connected to the first support arm 10111 and to the first door panel fixing frame 10112, thereby allowing the first support arm 10111 and the first door panel fixing frame 10112 to perform mutual pulling movements through the first connecting member 10113. Therefore, it can be understood that the movement trajectory of the first connecting member 10113 plays a crucial role in the movement trajectory of the first rotating assembly 1011.

[0096] In this application, the first connecting member 10113 is movable relative to the main shaft 102. For specific implementation, refer to... Figure 7 , Figure 7This is a schematic diagram illustrating the cooperation relationship between the first connector 10113 and the main shaft 102 provided in an embodiment of this application. The main shaft 102 is provided with a first track groove 1021, and the first connector 10113 can move relative to the main shaft 102 along the first track groove 1021 to restrict the movement trajectory of the first connector 10113. In this application, to enable the first connector 10113 to move along the first track groove 1021, the first connector 10113 can include a first slider 101131. The first slider 101131 can be installed in the first track groove 1021 and can move along the first track groove 1021, thereby restricting the movement trajectory of the first connector 10113. This ensures that the position of the first connector 10113 is relatively stable during the unfolded and closed states of the rotating shaft mechanism 1, preventing any play or wobbling, thus improving the reliability of the rotating shaft mechanism 1 in both states.

[0097] In this application, the shape of the first track groove 1021 is not specifically limited, but it can be exemplified as follows: Figure 7 The arc-shaped groove shown can be a circular arc groove, an elliptical arc groove, or other possible arc-shaped grooves. The first slider 101131 can be an arc-shaped slider, which can be a circular arc slider, an elliptical arc slider, or other possible arc-shaped sliders. In this case, the first slider 101131 can rotate relative to the main shaft 102 along the first track groove 1021, thereby realizing the rotational connection between the first connecting member 10113 and the main shaft 102, so as to restrict the movement trajectory of the first connecting member 10113.

[0098] In some other possible embodiments of this application, the first slider 101131 can also slide relative to the main shaft 102 along the first track groove 1021 to achieve a sliding connection between the first connector 10113 and the main shaft 102, thereby restricting the movement trajectory of the first connector 10113. Specifically, the first track groove 1021 can also be a straight groove, in which case the first slider 101131 can be adaptively set as a straight slider. It is understood that in this application, the shape of the first slider 101131 matches that of the first track groove 1021 to improve the smoothness of the sliding of the first slider 101131 along the first track groove 1021.

[0099] You can continue to refer to Figure 7 The main shaft 102 may also be provided with a first mounting groove 1022, and the first connecting member 10113 is mounted in the first mounting groove 1022. This makes the structure of the rotating shaft mechanism 1 more compact, which is conducive to the miniaturization design of the rotating shaft mechanism 1. The first track groove 1021 may be formed in the groove wall of the first mounting groove 1022 along the axial direction of the rotating shaft mechanism 1. Then, along the axial direction of the rotating shaft mechanism 1, the first slider 101131 may be provided at the end of the first connecting member 10113.

[0100] Can be referred to together Figure 5 and Figure 7 The main shaft 102 includes a first sub-support surface 1025, which faces the flexible display screen. Additionally, the first connector 10113 may include a second sub-support surface 101132. When the electronic device is in the deployed state, the first sub-support surface 1025 and the second sub-support surface 101132 can work together to provide flat support for the flexible display screen, thereby improving the reliability of the pivot mechanism 1 in supporting the flexible display screen when the electronic device is in the deployed state.

[0101] It is worth mentioning that, in one possible embodiment of this application, the first connector 10113 can be used as the first slider 101131. In this case, the first track groove 1021 can be adaptively adjusted so that the first connector 10113 can be installed in the first track groove 1021 and rotate or slide relative to the main shaft 102 along the first track groove 1021.

[0102] Reference Figure 8 , Figure 8 This is a cross-sectional view of the rotating shaft mechanism 1 provided in this application embodiment at the first connecting member 10113 when the electronic device is in the unfolded state. It can be used to illustrate the cooperation relationship between the first slider 101131 and the first track groove 1021 of the first connecting member 10113. Additionally, referring to... Figure 9 , Figure 9 This is a cross-sectional view of the pivot mechanism 1 provided in this application embodiment at the first connecting member 10113 when the electronic device is in the closed state. See also... Figure 8 and Figure 9 As can be seen, during the process of the electronic device changing from the unfolded state to the closed state, the first slider 101131 of the first connector 10113 can move within the first track groove 1021 in the direction toward the first door panel fixing frame 10112. Conversely, during the process of the electronic device changing from the closed state to the unfolded state, the first slider 101131 of the first connector 10113 can move within the first track groove 1021 in the direction toward the first support arm 10111. This allows the first connector 10113 to move relative to the main shaft 102 according to a set trajectory.

[0103] Refer to together Figure 8 and Figure 9 It can be seen that during the process of the electronic device moving from the unfolded state to the closed state, or from the closed state to the unfolded state, the first support arm 10111 and the first door panel fixing frame 10112 achieve mutual pulling motion through the first connector 10113, thereby realizing the rotation of the first support arm 10111 and the first door panel fixing frame 10112 around the main shaft 102.

[0104] In this application, when the first support arm 10111 is rotatably connected to the first connecting member 10113, please refer to... Figure 10 , Figure 10 This is an exploded view of a partial structure of the pivot mechanism 1 provided in an embodiment of this application, which can be used to show the relative positional relationship of the first support arm 10111, the first connector 10113, and the first door panel fixing frame 10112. For example... Figure 10 As shown, the first rotating assembly 1011 may further include a first connecting rod 10114, which is located between the first support arm 10111 and the first connecting member 10113. The first support arm 10111 is rotatably connected to the first connecting rod 10114, and the first connecting member 10113 is also rotatably connected to the first connecting rod 10114. The axis of rotation of the first support arm 10111 relative to the first connecting rod 10114 is parallel to but does not coincide with the axis of rotation of the first connecting member 10113 relative to the first connecting rod 10114. In a specific implementation, the first connecting rod 10114 and the first support arm 10111 are rotatably connected via a first rotating shaft 10115, the axis of which extends along the axial direction of the rotating shaft mechanism 1. Additionally, see also... Figure 6 and Figure 10 The first support arm 10111 may be provided with a first clearance opening 101111, and at least a portion of the first connecting rod 10114 may be accommodated in the first clearance opening 101111, which can make the structure of the first rotating assembly 1011 more compact, thereby facilitating the reduction of the size of the rotating shaft mechanism 1.

[0105] In addition, such as Figure 10 As shown, the first support arm 10111 and the main shaft 102 can be rotatably connected via the second rotating shaft 10116, wherein the axis of the first rotating shaft 10115 and the axis of the second rotating shaft 10116 are parallel but not coincident. (See also...) Figure 8 and Figure 10 The second pivot 10116 is located on the side of the first pivot 10115 that is away from the flexible display screen.

[0106] You can continue to refer to Figure 10 The first connecting rod 10114 and the first connecting member 10113 are rotatably connected via a third rotating shaft 10117. The axis of the first rotating shaft 10115 is parallel to but does not coincide with the axis of the third rotating shaft 10117. In addition, a second clearance opening 101133 may be provided at the end of the first connecting member 10113 facing the first connecting rod 10114, so that at least a portion of the first connecting member 10113 can be accommodated in the second clearance opening 101133, thereby making the structure of the first rotating assembly 1011 more compact.

[0107] In this application, the first connector 10113 and the first door panel fixing frame 10112 can be rotatably connected via a fourth rotating shaft 10118, the axis of the fourth rotating shaft 10118 being parallel to but not coincident with the axis of the third rotating shaft 10117. Additionally, as... Figure 10 As shown, the end of the first connector 10113 facing the first door panel fixing frame 10112 may be provided with a third clearance opening 101134, and the end of the first door panel fixing frame 10112 facing the first connector 10113 may be provided with a first protrusion 101121. The first protrusion 101121 can be accommodated in the third clearance opening 101134, so that the first protrusion 101121 and the first connector 10113 can be rotatably connected through the fourth rotating shaft 10118 to realize the rotatable connection between the first connector 10113 and the first door panel fixing frame 10112, thereby making the structure of the first rotating assembly 1011 more compact.

[0108] You can continue to refer to Figure 10 In this application, the rotating module 101 may further include a first housing fixing frame 1013 and a second housing fixing frame 1014, which are respectively disposed on opposite sides of the main shaft 102. The first rotating assembly 1011 is located between the first housing fixing frame 1013 and the second housing fixing frame 1014. The first support arm 10111 is slidably connected to the first housing fixing frame 1013. For specific implementation, refer to... Figure 11 , Figure 11 This is a schematic diagram illustrating the cooperation relationship between the first support arm 10111 and the first housing fixing frame 1013 provided in an embodiment of this application. The first housing fixing frame 1013 is provided with a first sliding groove 10131, which extends along a first direction. The first support arm 10111 can be installed in the first sliding groove 10131 and can slide within the first sliding groove 10131 along the first direction. The first direction can be the direction in which the first housing fixing frame 1013 moves toward or away from the main shaft 102. Furthermore, to prevent the first support arm 10111 from falling out of the first sliding groove 10131, a first slide rail 101311 can be provided on the groove wall of the first sliding groove 10131, and a first guide portion 101112 can be provided on the first support arm 10111. In this way, the first guide portion 101112 can be engaged with the first slide rail 101311, and the first guide portion 101112 can slide along the first slide rail 101311 to limit the first support arm 10111 within the first slide groove 10131. In addition, by providing the first slide rail 101311 on the groove wall of the first slide groove 10131, it can provide guidance for the sliding of the first support arm 10111 along the first slide groove 10131, thereby improving the stability of the movement of the first support arm 10111.

[0109] In this application, the first door panel fixing frame 10112 is rotatably connected to the second housing fixing frame 1014. Specifically, the first door panel fixing frame 10112 and the second housing fixing frame 1014 can be rotatably connected via a virtual axis. It is worth noting that in this application, the virtual axis refers to the axis of an arc-shaped structure. The two rotatably connected components can rotate relative to this virtual axis, and the position of the virtual axis remains fixed as the two rotatably connected components rotate relative to each other. Therefore, when rotatably connecting the first door panel fixing frame 10112 and the second housing fixing frame 1014 via the virtual axis, reference can be made to... Figure 12 , Figure 12 This is a schematic diagram illustrating the cooperation relationship between the first door panel fixing bracket 10112 and the second housing fixing bracket 1014 provided in an embodiment of this application. The first door panel fixing bracket 10112 has a first arc-shaped groove 101122 at its end facing the second housing fixing bracket 1014, while the second housing fixing bracket 1014 has a second arc-shaped rotating block 10142. See also... Figure 8 and Figure 12 The second arc-shaped rotating block 10142 is installed on the first arc-shaped groove 101122, and the second arc-shaped rotating block 10142 can slide along the groove surface of the first arc-shaped groove 101122, thereby realizing the relative rotation between the first door panel fixing frame 10112 and the second housing fixing frame 1014.

[0110] It is understood that, in one possible embodiment of this application, the first door panel fixing frame 10112 may also be provided with a second arc-shaped rotating block 10142 at the end facing the second housing fixing frame 1014, and the first arc-shaped groove 101122 may be provided on the second housing fixing frame 1014. The relative rotation between the first door panel fixing frame 10112 and the second housing fixing frame 1014 can also be achieved by the second arc-shaped rotating block 10142 sliding along the groove surface of the first arc-shaped groove 101122.

[0111] It is worth mentioning that, for inward-folding electronic devices, the first door panel fixing bracket 10112 and the second housing fixing bracket 1014 are rotatably connected by a virtual axis, and the axis of rotation of the second housing fixing bracket 1014 relative to the first door panel fixing bracket 10112 is located on the side of the first door panel fixing bracket 10112 facing the flexible display screen.

[0112] In this application, the first door panel fixing frame 10112 and the second housing fixing frame 1014 can be rotatably connected not only by a virtual shaft but also by a solid shaft, so that the connection between the first door panel fixing frame 10112 and the second housing fixing frame 1014 is more reliable.

[0113] Based on the rotating shaft mechanism 1 provided in the above embodiments of this application, reference can also be made to... Figure 8 and Figure 9During the process of the electronic device changing from the unfolded state to the closed state, the first housing fixing frame 1013 and the second housing fixing frame 1014 move towards each other. When the first housing fixing frame 1013 drives the first support arm 10111 to rotate clockwise around the main shaft 102, the first support arm 10111 can slide relative to the first housing fixing frame 1013 in the first slide groove 10131 in the direction toward the main shaft 102. Since the first support arm 10111 and the first connecting member 10113 are rotatably connected via the first connecting rod 10114, and the first support arm 10111 and the main shaft 102 are rotatably connected via the second rotating shaft 10116, during the clockwise rotation of the first support arm 10111 around the main shaft 102, based on the lever principle, the first support arm 10111 can push the first connecting member 10113 to move towards the first door panel fixing frame 10112 in the first track groove 1021 via the first connecting rod 10114, thereby pushing the first door panel fixing frame 10112 to rotate counterclockwise around the main shaft 102. Furthermore, since the first door panel fixing frame 10112 is rotatably connected to the second housing fixing frame 1014, the counterclockwise rotation of the first door panel fixing frame 10112 around the main shaft 102 can drive the second housing fixing frame 1014 to rotate counterclockwise around the main shaft 102. During the process of the electronic device changing from a closed state to an unfolded state, the first housing fixing frame 1013 and the second housing fixing frame 1014 move in opposite directions. When the first housing fixing frame 1013 drives the first support arm 10111 to rotate counterclockwise around the main shaft 102, the first support arm 10111 can pull the first connecting piece 10113 in the first track groove 1021 towards the first support arm 10111 through the first connecting rod 10114. This can drive the first door panel fixing frame 10112 to rotate clockwise around the main shaft 102, so that the first door panel fixing frame 10112 can drive the second housing fixing frame 1014 to rotate clockwise around the main shaft 102. This realizes the folding and unfolding function of the rotating shaft mechanism 1.

[0114] In some existing rotating shaft mechanisms 1, to ensure stability, the thickness of the rotating component connected to the main shaft 102 needs to be increased. This makes both the main shaft 102 and the rotating shaft mechanism 1 very thick and heavy. If the thickness is forcibly reduced, the strength of the rotating component is easily weakened, and there is a risk that the rotating component will detach from the main shaft 102 when the electronic device is dropped. This greatly affects the reliability of the rotating shaft mechanism 1 and thus shortens the life of the electronic device. The rotating shaft mechanism 1 described in this application has a simplified structure. Through the above structural relationship, the cross-section of the first slider 101131 of the first connecting member 10113 can be made smaller so that it can pass through the first track groove 1021 of the main shaft 102. At the same time, since the first connecting member 10113 has sufficient length in the vertical axial direction and has a connection relationship with the first support arm 10111 and the first door panel fixing frame 10112 respectively, the reliability of the rotating shaft mechanism 1 can be guaranteed. In this way, the thickness of the main shaft 102 and the overall thickness can be reduced while maintaining the reliability of the rotating shaft mechanism 1, making the entire rotating shaft mechanism 1 thin, light and reliable.

[0115] Furthermore, since the first connector 10113 can move along a set trajectory within the first track groove 1021, its movement can be prevented from becoming uncontrolled during the entire folding and unfolding process. This, in turn, avoids random movement of the first housing fixing frame 1013 and the second housing fixing frame 1014, thus ensuring the structural and movement stability of the entire pivot mechanism 1. In some cases, through reasonable design of the first track groove 1021, the inner tangent of the pivot mechanism 1 can also maintain a constant length throughout the entire folding and unfolding process. This allows the flexible display screen covering the surface of the pivot mechanism 1 to maintain a relatively constant length, effectively preventing compression or stretching of the flexible display screen, thereby improving the structural reliability of the flexible display screen and, consequently, the structural reliability of the electronic device.

[0116] You can continue to refer to Figure 6Similar to the structure of the first rotating assembly 1011, the second rotating assembly 1012 is located between the first housing fixing frame 1013 and the second housing fixing frame 1014. Furthermore, the second rotating assembly 1012 may include a second support arm 10121, a second door panel fixing frame 10122, and a second connecting member 10123. The second connecting member 10123 is located between the second support arm 10121 and the second door panel fixing frame 10122, and is rotatably connected to both the second support arm 10121 and the second door panel fixing frame 10122. In this application, when the second connecting member 10123 is rotatably connected to the second support arm 10121 and the second door panel fixing frame 10122, it can be configured in a manner similar to the described rotatable connection between the first connecting member 10113 and the second support arm 10121 and the second door panel fixing frame 10122. For example, refer to... Figure 7 , Figure 7 This term can also be used to describe the cooperation relationship between the second connector 10123 and the main shaft 102 provided in the embodiments of this application. The main shaft 102 is provided with a second track groove 1023. The second connector 10123 is installed in the second track groove 1023 and can move relative to the main shaft 102 along the second track groove 1023, thereby restricting the movement trajectory of the second connector 10123 by the second track groove 1023. Specifically, the second connector 10123 may include a second slider 101231, which can be installed in the second track groove 1023 and can move along the second track groove 1023. This restricts the movement trajectory of the second connector 10123 by the second track groove 1023, ensuring that the position of the second connector 10123 is relatively stable during the unfolded and closed states of the rotating shaft mechanism 1, preventing any play or wobbling, thus improving the reliability of the rotating shaft mechanism 1 in both states.

[0117] In this application, the shape of the second track groove 1023 is not specifically limited, but it can be exemplified as follows: Figure 7 The arc-shaped groove shown can be a circular arc groove, an elliptical arc groove, or other possible arc-shaped grooves. The second slider 101231 can be an arc-shaped slider, which can be a circular arc slider, an elliptical arc slider, or other possible arc-shaped sliders. In this case, the second slider 101231 can rotate relative to the main shaft 102 along the second trajectory groove 1023, thereby realizing the rotational connection between the second connecting member 10123 and the main shaft 102, so as to restrict the movement trajectory of the second connecting member 10123.

[0118] In some other possible embodiments of this application, the second slider 101231 can also slide relative to the main shaft 102 along the second track groove 1023 to achieve a sliding connection between the second connector 10123 and the main shaft 102, thereby limiting the movement trajectory of the second connector 10123. Specifically, the second track groove 1023 can also be a straight groove, in which case the second slider 101231 can be adaptively set as a straight slider. It is understood that in this application, the shape of the second slider 101231 matches that of the second track groove 1023 to improve the smoothness of the sliding of the second slider 101231 along the second track groove 1023.

[0119] You can continue to refer to Figure 7 The main shaft 102 may also be provided with a second mounting groove 1024, and the second connecting member 10123 is mounted in the second mounting groove 1024. This makes the structure of the rotating shaft mechanism 1 more compact, which is conducive to the miniaturization design of the rotating shaft mechanism 1. The second track groove 1023 may be formed in the groove wall of the second mounting groove 1024 along the axial direction of the rotating shaft mechanism 1. Then, along the axial direction of the rotating shaft mechanism 1, the second slider 101231 may be provided at the end of the second connecting member 10123.

[0120] Can be referred to together Figure 5 and Figure 7 The second connector 10123 may include a third sub-support surface 101232. When the electronic device is in the unfolded state, the first sub-support surface 1025, the second sub-support surface 101132 and the third sub-support surface 101232 can be used together to provide flat support for the flexible display screen, thereby improving the reliability of the pivot mechanism 1 in supporting the flexible display screen when the electronic device is in the unfolded state.

[0121] It is worth mentioning that, in one possible embodiment of this application, the second connector 10123 can be used as the second slider 101231. In this case, the second track groove 1023 can be adaptively adjusted so that the second connector 10123 can be installed in the second track groove 1023 and move relative to the main shaft 102 along the second track groove 1023.

[0122] In this application, during the process of the electronic device moving from an unfolded state to a closed state, or from a closed state to an unfolded state, the second support arm 10121 and the second door panel fixing frame 10122 achieve mutual pulling motion through the second connector 10123, thereby realizing the rotation of the second support arm 10121 and the second door panel fixing frame 10122 around the main shaft 102. Specifically, when the second support arm 10121 is rotatably connected to the second connector 10123, please refer to... Figure 6The second rotating assembly 1012 may further include a second connecting rod 10124, which is located between the second support arm 10121 and the second connecting member 10123. The second support arm 10121 is rotatably connected to the second connecting rod 10124, and the second connecting member 10123 is rotatably connected to the second connecting rod 10124. The axis of rotation of the second support arm 10121 relative to the second connecting rod 10124 is parallel to but does not coincide with the axis of rotation of the second connecting member 10123 relative to the second connecting rod 10124. In a specific implementation, the second connecting rod 10124 and the second support arm 10121 are rotatably connected via a fifth rotating shaft, the axis of which extends along the axial direction of the rotating shaft mechanism 1. Additionally, refer to... Figure 6 The second support arm 10121 may be provided with a fourth clearance opening, and at least a portion of the second connecting rod 10124 may be accommodated in the fourth clearance opening, which can make the structure of the second rotating assembly 1012 more compact, thereby facilitating the reduction of the size of the rotating shaft mechanism 1.

[0123] In addition, the second support arm 10121 and the main shaft 102 can be rotatably connected via the sixth rotating shaft, wherein the axis of the fifth rotating shaft is parallel to and does not coincide with the axis of the sixth rotating shaft, and the sixth rotating shaft is located on the side of the fifth rotating shaft away from the flexible display screen.

[0124] In this application, the second connecting rod 10124 and the second connecting member 10123 are rotatably connected via a seventh rotating shaft, the axis of which is parallel to but does not coincide with the axis of the fifth rotating shaft. Furthermore, a fifth clearance opening may be provided at the end of the second connecting member 10123 facing the second connecting rod 10124, allowing at least a portion of the second connecting member 10123 to be accommodated within the fifth clearance opening, thus making the structure of the second rotating assembly 1012 more compact.

[0125] In this application, the second connector 10123 and the second door panel mounting bracket 10122 can be rotatably connected via an eighth rotating shaft, the axis of which is parallel to but not coincident with the axis of the seventh rotating shaft. Furthermore, a sixth clearance opening can be provided at the end of the second connector 10123 facing the second door panel mounting bracket 10122, and a second protrusion can be provided at the end of the second door panel mounting bracket 10122 facing the second connector 10123. The second protrusion can be accommodated within the sixth clearance opening, thus enabling the second protrusion and the second connector 10123 to be rotatably connected via the eighth rotating shaft, thereby achieving a rotatable connection between the second connector 10123 and the second door panel mounting bracket 10122, resulting in a more compact structure for the second rotating assembly 1012.

[0126] In this application, the second support arm 10121 is slidably connected to the second housing fixing frame 1014. For specific implementation, please refer to... Figure 11 , Figure 11This can also be used to demonstrate the mating relationship between the second support arm 10121 and the second housing fixture 1014. The second housing fixture 1014 is provided with a second sliding groove 10141, which extends along a second direction. The second support arm 10121 can be installed in the second sliding groove 10141 and can slide within the second sliding groove 10141 along the second direction. This second direction can be the direction in which the second housing fixture 1014 moves toward or away from the main shaft 102. Furthermore, to prevent the second support arm 10121 from falling out of the second sliding groove 10141, a second slide rail 101411 can be provided on the groove wall of the second sliding groove 10141, and a second guide portion 101211 can be provided on the second support arm 10121. In this way, the second guide portion 101211 can be engaged with the second slide rail 101411 and slide along the second slide rail 101411 to limit the second support arm 10121 within the second slide groove 10141. Furthermore, by providing the second slide rail 101411 on the groove wall of the second slide groove 10141, it can provide guidance for the sliding of the second support arm 10121 along the second slide groove 10141, thereby improving the stability of the movement of the second support arm 10121.

[0127] Furthermore, the second door panel fixing bracket 10122 can be rotatably connected to the first housing fixing bracket 1013. Specifically, the second door panel fixing bracket 10122 and the first housing fixing bracket 1013 can be rotatably connected via a virtual axis. For specific implementation details, please refer to... Figure 12 , Figure 12 This can also be used to demonstrate the cooperation relationship between the second door panel fixing bracket 10122 and the first housing fixing bracket 1013. The second door panel fixing bracket 10122 has a second arc-shaped groove at its end facing the first housing fixing bracket 1013, while the first housing fixing bracket 1013 has a first arc-shaped rotating block 10132. The first arc-shaped rotating block 10132 is installed in the second arc-shaped groove and can slide along the groove surface, thereby achieving relative rotation between the second door panel fixing bracket 10122 and the first housing fixing bracket 1013.

[0128] It is understood that, in one possible embodiment of this application, the second door panel fixing frame 10122 may also be provided with a first arc-shaped rotating block 10132 at the end facing the first housing fixing frame 1013, and the second arc-shaped groove 101221 may be provided on the first housing fixing frame 1013. The relative rotation between the second door panel fixing frame 10122 and the first housing fixing frame 1013 can also be achieved by the first arc-shaped rotating block 10132 sliding along the groove surface of the second arc-shaped groove 101221.

[0129] It is worth mentioning that, for inward-folding electronic devices, the second door panel fixing bracket 10122 and the first housing fixing bracket 1013 are rotatably connected by a virtual axis, and the axis of rotation of the first housing fixing bracket 1013 relative to the second door panel fixing bracket 10122 is located on the side of the second door panel fixing bracket 10122 facing the flexible display screen.

[0130] In this application, the second door panel fixing bracket 10122 and the first housing fixing bracket 1013 can be rotatably connected not only by a virtual shaft but also by a solid shaft, so that the connection between the second door panel fixing bracket 10122 and the first housing fixing bracket 1013 is more reliable.

[0131] Based on the rotating shaft mechanism 1 provided in the above embodiments of this application, during the process of the electronic device changing from an unfolded state to a closed state, the first housing fixing frame 1013 and the second housing fixing frame 1014 move toward each other. When the second housing fixing frame 1014 drives the second support arm 10121 to rotate counterclockwise around the main shaft 102, the second support arm 10121 can slide relative to the second housing fixing frame 1014 in the second slide groove 10141 in the direction toward the main shaft 102. Since the second support arm 10121 and the second connecting member 10123 are rotatably connected via the second connecting rod 10124, and the second support arm 10121 is rotatably connected to the main shaft 102 via the sixth rotating shaft, during the clockwise rotation of the second support arm 10121 around the main shaft 102, based on the lever principle, the second support arm 10121 can push the second connecting member 10123 to move towards the second door panel fixing frame 10122 in the second track groove 1023 via the second connecting rod 10124, thereby pushing the second door panel fixing frame 10122 to rotate clockwise around the main shaft 102. Furthermore, since the second door panel fixing frame 10122 is rotatably connected to the first housing fixing frame 1013, the clockwise rotation of the second door panel fixing frame 10122 around the main shaft 102 can drive the first housing fixing frame 1013 to rotate clockwise around the main shaft 102. During the process of the electronic device changing from a closed state to an unfolded state, the first housing fixing frame 1013 and the second housing fixing frame 1014 move in opposite directions. When the second housing fixing frame 1014 drives the second support arm 10121 to rotate clockwise around the main shaft 102, the second support arm 10121 can pull the second connecting piece 10123 in the second track groove 1023 towards the second support arm 10121 through the second connecting rod 10124. This can drive the second door panel fixing frame 10122 to rotate counterclockwise around the main shaft 102, so that the second door panel fixing frame 10122 can drive the first housing fixing frame 1013 to rotate counterclockwise around the main shaft 102. This realizes the folding and unfolding function of the rotating shaft mechanism 1.

[0132] In some existing rotating shaft mechanisms 1, to ensure stability, the thickness of the rotating component connected to the main shaft 102 needs to be increased. This makes both the main shaft 102 and the rotating shaft mechanism 1 very thick and heavy. If the thickness is forcibly reduced, the strength of the rotating component is easily weakened, and there is a risk that the rotating component will detach from the main shaft 102 when the electronic device is dropped. This greatly affects the reliability of the rotating shaft mechanism 1 and thus shortens the life of the electronic device. The rotating shaft mechanism 1 of this application has a simplified structure. Through the above structural relationship, the cross-section of the second slider 101231 of the second connector 10123 can be made smaller so that it can pass through the second track groove 1023 of the main shaft 102. At the same time, since the second connector 10123 has sufficient length in the vertical axial direction and has a connection relationship with the first and second support arms and the second door panel fixing frame 10122 respectively, the reliability of the rotating shaft mechanism 1 can be guaranteed. In this way, the thickness of the main shaft 102 and the overall thickness can be reduced while maintaining the reliability of the rotating shaft mechanism 1, making the entire rotating shaft mechanism 1 thin, light and reliable.

[0133] Furthermore, since the second connector 10123 can move along a set trajectory within the second track groove 1023, its movement can be prevented from becoming uncontrolled during the entire folding and unfolding process. This, in turn, avoids random movement of the first housing fixing frame 1013 and the second housing fixing frame 1014, thus ensuring the structural and movement stability of the entire pivot mechanism 1. In some cases, through reasonable design of the second track groove 1023, the inner tangent of the pivot mechanism 1 can also maintain a constant length throughout the entire folding and unfolding process. This allows the flexible display screen covering the surface of the pivot mechanism 1 to maintain a relatively constant length, effectively preventing compression or stretching of the flexible display screen, thereby improving the structural reliability of the flexible display screen and, consequently, the structural reliability of the electronic device.

[0134] Reference Figure 13 , Figure 13 This is a partial structural schematic diagram of the rotating shaft mechanism 1 provided in the embodiments of this application, and in Figure 13The main shaft 102 is omitted to facilitate the explanation of the mutual pulling relationship between the first rotating assembly 1011 and the second rotating assembly 1012. In this application, the first support arm 10111 is slidably connected to the first housing fixing frame 1013, and the first door panel fixing frame 10112 is rotatably connected to the second housing fixing frame 1014. The first support arm 10111 can pull the first door panel fixing frame 10112 to move along a set trajectory through the first connecting member 10113. The second support arm 10121 is slidably connected to the second housing fixing frame 1014, and the second door panel fixing frame 10122 is rotatably connected to the first housing fixing frame 1013. The second support arm 10121 can pull the second door panel fixing frame 10122 to move along a set trajectory through the second connecting member 10123. This limits the movement distance of the first housing bracket 1013 and the second housing bracket 1014 towards or away from the main shaft 102, ensuring that the distances between the first housing bracket 1013 and the second housing bracket 1014 and the main shaft 102 are equal when the electronic device is in any folded state. Furthermore, during the process of the electronic device moving from an unfolded state to a closed state, and from a closed state to an unfolded state, the distances of movement of the first housing bracket 1013 relative to the main shaft 102 are equal, and the distances of movement of the second housing bracket 1014 relative to the main shaft 102 are also equal. This allows for the application of this pivot mechanism 1 in situations such as... Figure 1 When designing the electronic device shown, the folding function of the electronic device can be achieved without squeezing or pulling the flexible display screen, thereby extending the service life of the flexible display screen and improving the reliability of the electronic device.

[0135] Reference Figure 14 , Figure 14 This is another exploded view of the pivot mechanism 1 provided in an embodiment of this application. The pivot mechanism 1 further includes a first door panel 104 and a second door panel 105. The first door panel 104 is located on the side of the first door panel fixing frame 10112 facing the flexible display screen, and is fixedly connected to the first door panel fixing frame 10112. The first door panel 104 includes a first plate surface 1041 facing the flexible display screen. The second door panel 105 is located on the side of the second door panel fixing frame 10122 facing the flexible display screen, and is fixedly connected to the second door panel fixing frame 10122. The second door panel 105 includes a second plate surface 1051 facing the flexible display screen. The connection between the first door plate 104 and the second door plate 105 of the pivot mechanism 1 provided in this application and the corresponding rotating components is relatively simple. The motion drive mechanism of the first door plate 104 and the second door plate 105 is the mechanism of the pivot mechanism 1 used to realize the folding and unfolding functions. It can improve the integration of the pivot mechanism 1, so as to simplify the structure of the pivot mechanism 1, thereby facilitating the miniaturization design of the pivot mechanism 1.

[0136] In one possible embodiment of this application, the first door panel 104 and the first door panel fixing frame 10112 may be an integral structure, and the second door panel 105 and the second door panel fixing frame 10122 may be an integral structure to simplify the structure of the rotating shaft mechanism 1.

[0137] As can be seen from the above description of the rotating shaft mechanism 1, when the rotating shaft mechanism 1 includes multiple rotating modules 101, a separate main shaft 102 can be provided for each rotating module 101. Additionally, refer to... Figure 14 Two adjacent main shafts 102 can be connected by a connecting beam 106, and the specific connection method can be, but is not limited to, welding, riveting, or bonding. (Refer to...) Figure 15 , Figure 15 for Figure 14 The schematic diagram of the assembly structure of the pivot mechanism 1 shown in this application indicates that the first door panel 104 and the second door panel 105 can both be configured as an integral structure. The first door panel 104 is fixedly connected to the first door panel fixing frame 10112 of the multiple rotating modules 101, and the second door panel 105 is fixedly connected to the second door panel fixing frame 10122 of the multiple rotating modules 101. In this way, when the electronic device is in the unfolded state, the first door panel 104, the main shaft 102, and the second door panel 105 can be used together to support the flexible display screen. This is beneficial to improving the integrity of the support surface provided by the pivot mechanism 1 for the flexible display screen in this state, so as to achieve flat support of the flexible display screen by the pivot mechanism 1.

[0138] Additionally, refer to Figure 16 , Figure 16 for Figure 15 The cross-sectional view of the rotating shaft mechanism 1 shown is taken when the electronic device is in the closed state. It can be used to illustrate cross-sectional views of the first door panel 104 and the second door panel 105 in this state. Figure 16 As shown, the rotating shaft mechanism 1 provided in this application, through reasonable design of the movement trajectories of the first rotating component 1011 and the second rotating component 1012, and by rotatably connecting each rotating component to one housing fixing frame via a fixed axis and slidably connecting it to another housing fixing frame, allows the screen-accommodating space formed by the rotating shaft mechanism 1 when the electronic device is in a closed state to better match the bending shape of the foldable part of the flexible display screen 4. This avoids squeezing the flexible display screen 4, thereby improving the structural reliability of the flexible display screen 4. In addition, the structural design of the rotating shaft mechanism 1 provided in this application can make the structural strength of each component of the rotating shaft mechanism 1 better, which is conducive to improving the structural reliability of the rotating shaft mechanism 1.

[0139] It is understood that by synchronizing the movement of the first housing 2 and the second housing 3 during the unfolding and closing of the electronic device, the risk of the flexible display screen being subjected to instantaneous compression or tensile stress can be effectively reduced. Based on this, the rotating shaft mechanism 1 provided in this embodiment may further include a synchronization component 107. For specific implementation, please refer to... Figure 13 The synchronization component 107 includes a synchronization gear 1071, which is located between the first connecting member 10113 and the second connecting member 10123 along the axial direction of the rotating shaft mechanism 1. Furthermore, the end of the first connecting member 10113 facing the synchronization gear 1071 is provided with a first gear surface 101135, and the end of the second connecting member 10123 facing the synchronization gear 1071 is provided with a second gear surface 101233. The first gear surface 101135 and the second gear surface 101233 are connected by the synchronization gear 1071, so that when the first connecting member 10113 rotates relative to the synchronization gear 1071, it can drive the second connecting member 10123 to move synchronously in the opposite direction relative to the synchronization gear 1071. This application does not limit the number of synchronization gears 1071; for example, they can be... Figure 13 As shown, the first gear surface 101135 can mesh with the gear surface of the synchronous gear 1071, and the second gear surface 101233 can mesh with the gear surface of the synchronous gear 1071.

[0140] like Figure 13 As shown, the first connecting member 10113 may include two first sliders 101131. Along the axial direction of the rotating shaft mechanism 1, the two first sliders 101131 are respectively disposed at the two ends of the first connecting member 10113. Then, the first gear surface 101135 may be disposed on the first slider 101131 of the first connecting member 10113 facing the synchronous gear 1071. In this application, when the first connecting member 10113 includes two first sliders 101131, the main shaft 102 may be provided with a first track groove 1021 corresponding to each first slider 101131, so that each first slider 101131 is installed in the corresponding first track groove 1021, and each first slider 101131 can slide or rotate relative to the main shaft along the corresponding first track groove 1021, thereby improving the stability of the movement of the first connecting member 10113 relative to the main shaft 102. It is understandable that when the two first sliders 101131 of the first connector 10113 are arc-shaped sliders, the shapes of the two first sliders 101131 can be the same or different, but the axes of rotation of the two first sliders 101131 relative to the main shaft 102 coincide. For example, both first sliders 101131 are arc-shaped sliders, and the radii of the circles containing the two first sliders 101131 may be the same or different, but the axes of rotation of the two first sliders 101131 relative to the main shaft 102 coincide. This improves the stability of the rotation of the first connector 10113 relative to the main shaft 102.

[0141] In this application, the second connecting member 10123 may include two second sliders 101231. Along the axial direction of the rotating shaft mechanism 1, the two second sliders 101231 are respectively disposed at the two ends of the second connecting member 10123. The second gear surface 101233 may be disposed on the second slider 101231 of the second connecting member 10123 facing the synchronous gear 1071. In this application, when the second connecting member 10123 includes two second sliders 101231, the main shaft 102 may provide a second track groove 1023 corresponding to each second slider 101231, so that each second slider 101231 is installed in the corresponding second track groove 1023, and each second slider 101231 can slide or rotate relative to the main shaft along the corresponding second track groove 1023, thereby improving the stability of the movement of the second connecting member 10123 relative to the main shaft 102. It is understandable that when the two second sliders 101231 of the second connector 10123 are arc-shaped sliders, the shapes of the two second sliders 101231 can be the same or different, but the axes of rotation of the two second sliders 101231 relative to the main shaft 102 coincide. For example, both second sliders 101231 are arc-shaped sliders, and the radii of the circles containing the two second sliders 101231 may be the same or different, but the axes of rotation of the two second sliders 101231 relative to the main shaft 102 coincide. This improves the stability of the movement of the second connector 10123 relative to the main shaft 102.

[0142] In this application, by setting the first gear surface 101135 of the first connector 10113 on a first slider 101131 of the first connector 10113, and setting the second gear surface 101233 of the second connector 10123 on a second slider 101231 of the second connector 10123, the structure of the rotating shaft mechanism 1 can be made more compact while realizing the synchronous rotation of the first housing fixing frame 1013 and the second housing fixing frame 1014, which is conducive to realizing the miniaturization design of the rotating shaft mechanism 1.

[0143] Based on the above description of the rotating shaft mechanism 1 provided in the embodiments of this application, when the electronic device changes from an unfolded state to a closed state, the first housing fixing frame 1013 rotates clockwise around the main shaft 102, which can drive the first support arm 10111 to rotate clockwise around the main shaft 102, thereby causing the first support arm 10111 to push the first connecting member 10113 to move towards the first door panel fixing frame 10112 in the first track groove 1021 through the first connecting rod 10114. Since the first connecting member 10113 and the second connecting member 10123 are connected by a synchronous gear 1071, the movement of the first connecting member 10113 toward the first door panel fixing frame 10112 in the first track groove 1021 can drive the second connecting member 10123 toward the second door panel fixing frame 10122 in the second track groove 1023. This causes the second door panel fixing frame 10122 to pull the second connecting member 10123 to rotate counterclockwise around the main shaft 102 through the second connecting rod 10124, thereby driving the second housing fixing frame 1014 to rotate synchronously around the main shaft 102 in the counterclockwise direction. In this way, the synchronous opposite rotation of the first housing fixing frame 1013 and the second housing fixing frame 1014 is achieved. In addition, during the process of the electronic device moving from the closed state to the unfolded state, the direction of movement of each structure is opposite to the direction of movement of the electronic device moving from the unfolded state to the closed state as described above. This will not be elaborated here, thereby achieving synchronous opposite rotation of the first housing fixing frame 1013 and the second housing fixing frame 1014.

[0144] The rotating shaft mechanism 1 provided in this application can achieve its folding and unfolding functions through the mutual pulling between the rotatingly connected structures. Simultaneously, the synchronous component 107 enables the synchronous rotation of the two housing fixing frames in opposite directions or back-to-back, thus making the rotation of the rotating shaft mechanism 1 more reliable. Furthermore, since the structures of the rotation function and the synchronization function implementation mechanism of this rotating shaft mechanism 1 are relatively simple, it effectively simplifies the overall structure of the rotating shaft mechanism 1, thereby facilitating its miniaturization and reducing its cost.

[0145] Reference Figure 17 , Figure 17 for Figure 5 Another exploded view of the structure shown. The rotating shaft mechanism 1 provided in this application embodiment may further include a damping module 108, which includes a first swing arm assembly 1081 and a second swing arm assembly 1082, wherein the first swing arm assembly 1081 and the second swing arm assembly 1082 are rotatably connected to the main shaft 102, and the first swing arm assembly 1081 and the first housing fixing frame 1013 are located on the same side of the main shaft 102, and the second swing arm assembly 1082 and the second housing fixing frame 1014 are located on the same side of the main shaft 102.

[0146] Reference Figure 18 , Figure 18 This is a schematic diagram illustrating the cooperation relationship between the damping module 108 and the main shaft 102 provided in this embodiment. The main shaft 102 further includes a first mounting portion 1026 and a second mounting portion 1027. The first rocker arm assembly 1081 is rotatably connected to the first mounting portion 1026 via a first shaft 1083, and the second rocker arm assembly 1082 is rotatably connected to the second mounting portion 1027 via a second shaft 1084. The first shaft 1083 and the second shaft 1084 are parallel and do not overlap. In specific implementation, the first rocker arm assembly 1081 includes a first rocker arm 10811 and a second rocker arm 10812. Along the axial direction of the rotating shaft mechanism 1, the first mounting part 1026 is located between the first rocker arm 10811 and the second rocker arm 10812. The first shaft 1083 can pass through the first rocker arm 10811, the first mounting part 1026 and the second rocker arm 10812 at the same time. Then the first rocker arm 10811 and the second rocker arm 10812 are rotatably connected to the first mounting part 1026 through the first shaft 1083, thereby realizing the rotatable connection between the first rocker arm assembly 1081 and the main shaft 102.

[0147] Similarly, the second rocker arm assembly 1082 includes a third rocker arm 10821 and a fourth rocker arm 10822. Along the axial direction of the rotating shaft mechanism 1, the second mounting part 1027 is located between the third rocker arm 10821 and the fourth rocker arm 10822. The second shaft 1084 can pass through the third rocker arm 10821, the second mounting part 1027 and the fourth rocker arm 10822 at the same time. Thus, the third rocker arm 10821 and the fourth rocker arm 10822 are rotatably connected to the second mounting part 1027 through the second shaft 1084, thereby realizing the rotatable connection between the second rocker arm assembly 1082 and the main shaft 102.

[0148] like Figure 18 As shown, in this application, the damping module 108 further includes a gasket 1085. In this embodiment, the damping module 108 includes a plurality of gaskets 1085, at least one gasket 1085 is located between the first swing arm 10811 and the second swing arm 10812, and at least one gasket 1085 is located between the third swing arm 10821 and the fourth swing arm 10822. For example, at least one gasket 1085 is located between the first swing arm 10811 and the first mounting portion 1026 and sleeved on the first shaft 1083, at least one gasket 1085 is located between the second swing arm 10812 and the first mounting portion 1026 and sleeved on the first shaft 1083, at least one gasket 1085 is located between the third swing arm 10821 and the second mounting portion 1027 and sleeved on the second shaft 1084, and at least one gasket 1085 is located between the fourth swing arm 10822 and the second mounting portion 1027 and sleeved on the second shaft 1084.

[0149] The damping module 108 also includes an elastic component 1086. This application does not limit the specific arrangement of the elastic component 1086. It includes, for example, multiple springs, with at least one spring sleeved on the first shaft 1083 and at least one spring sleeved on the second shaft 1084, in order to improve the motion reliability of the elastic component 1086 and enable the elastic component 1086 to generate an elastic force along the axial direction of the rotating shaft mechanism 1.

[0150] Along the axial direction of the rotating shaft mechanism 1, under the elastic force of the elastic component 1086, the first swing arm 10811 and the second swing arm 10812 press the pad 1085 located between the first swing arm 10811 and the second swing arm 10812 against the first mounting part 1026, and the third swing arm 10821 and the fourth swing arm 10822 press the pad 1085 located between the third swing arm 10821 and the fourth swing arm 10822 against the second mounting part 1027.

[0151] You can continue to refer to Figure 18 Along the axial direction of the rotating shaft mechanism 1, at least one side of the first mounting portion 1026 is provided with a first slot 10261. At least one washer 1085 located between the first rocker arm 10811 and the second rocker arm 10812 is engaged in the first slot 10261. In the direction in which the first rocker arm assembly 1081 rotates relative to the main shaft 102, the washer 1085 located between the first rocker arm 10811 and the second rocker arm 10812 is relatively fixed to the first mounting portion 1026. In this way, during the rotation of the first rocker arm assembly 1081 around the main shaft 102, the washer 1085 is prevented from rotating with the first rocker arm assembly 1081 around the main shaft 102. Since the first rocker arm assembly 1081 and the washer 1085 are pressed into contact under the elastic force of the elastic component 1086, when the first rocker arm assembly 1081 rotates relative to the main shaft 102, frictional resistance can be generated between the first rocker arm assembly 1081 and the washer 1085. This frictional resistance can serve as a damping force to prevent the first rocker arm assembly 1081 from rotating relative to the main shaft 102.

[0152] It is understood that in this application, when at least one gasket 1085 is disposed between the first rocker arm 10811 and the first mounting portion 1026, and at least one gasket 1085 is disposed between the second rocker arm 10812 and the first mounting portion 1026, the side of the first mounting portion 1026 facing the first rocker arm 10811 and the side of the first mounting portion 1026 facing the second rocker arm 10812 can both be provided with a first slot 10261, so that the gasket 1085 located between the first rocker arm 10811 and the second rocker arm 10812 can be respectively engaged in the corresponding first slot 10261.

[0153] Reference Figure 19 , Figure 19This is a partial structural diagram of the spindle provided in an embodiment of this application. The first mounting portion 1026 is provided with a first mounting hole 10262, which includes a first opening 102621 facing away from the flexible display screen. When assembling the damping module 108 with the spindle 102, the first shaft 1083 can be mounted in the first mounting hole 10262 through the first opening 102621. Furthermore, the movement of the washer 1085 towards the first opening 102621 can be restricted by engaging the washer 1085 between the first rocker arm 10811 and the second rocker arm 10812 with the first slot 10261 of the first mounting portion 1026. This simplifies the assembly process of the damping module 108 with the spindle 102 and prevents the damping module 108 from detaching from the spindle 102, thus improving the structural reliability of the shaft mechanism 1.

[0154] Similarly, you can continue to refer to... Figure 18 and Figure 19 Along the axial direction of the rotating shaft mechanism 1, at least one side of the second mounting portion 1027 is provided with a second slot 10271. A shim 1085 located between the third rocker arm 10821 and the fourth rocker arm 10822 is engaged in the second slot 10271. Furthermore, in the direction of rotation of the second rocker arm assembly 1082 relative to the main shaft 102, the shim 1085 located between the third rocker arm 10821 and the fourth rocker arm 10822 is relatively fixed to the second mounting portion 1027. This prevents the shim 1085 from rotating with the second rocker arm assembly 1082 around the main shaft 102 during the rotation of the second rocker arm assembly 1082. Since the second rocker arm assembly 1082 and the pad 1085 are pressed into contact under the elastic force of the elastic component 1086, when the second rocker arm assembly 1082 rotates relative to the main shaft 102, frictional resistance can be generated between the second rocker arm assembly 1082 and the pad 1085. This frictional resistance can serve as a damping force to prevent the second rocker arm assembly 1082 from rotating relative to the main shaft 102.

[0155] It is understood that in this application, when at least one gasket 1085 is disposed between the third rocker arm 10821 and the second mounting portion 1027, and at least one gasket 1085 is disposed between the fourth rocker arm 10822 and the second mounting portion 1027, the side of the second mounting portion 1027 facing the third rocker arm 10821 and the side of the second mounting portion 1027 facing the fourth rocker arm 10822 can both be provided with a second slot 10271. Then, the gasket 1085 located between the third rocker arm 10821 and the fourth rocker arm 10822 can be respectively engaged in the corresponding second slot 10271.

[0156] like Figure 19As shown, the second mounting portion 1027 is provided with a second mounting hole 10272, which includes a second opening 102721, which faces away from the flexible display screen. When assembling the damping module 108 with the main shaft 102, the second shaft 1084 can be mounted in the second mounting hole 10272 through the second opening 102721. Furthermore, the movement of the gasket 1085 towards the second opening 102721 can be restricted by engaging the gasket 1085 between the first swing arm 10811 and the second swing arm 10812 with the second slot 10271 of the second mounting portion 1027. This simplifies the assembly process of the damping module 108 and the main shaft 102, prevents the damping module 108 from detaching from the main shaft 102, and improves the structural reliability of the shaft mechanism 1.

[0157] In this embodiment of the application, the specific shape of the gasket 1085 is not limited. It can be a regular shape such as a polygon, or some possible irregular shape, as long as the gasket 1085 and the corresponding mounting part can be relatively fixed in the rotation direction by the snap-fit ​​of the gasket 1085 and the corresponding slot.

[0158] You can continue to refer to Figure 18 The damping module 108 may further include a first integrated cam 1087, which is sleeved on the first shaft 1083 and the second shaft 1084. Along the axial direction of the rotating shaft mechanism 1, the first rocker arm assembly 1081 is located between the elastic component 1086 and the first integrated cam 1087, and the second rocker arm assembly 1082 is located between the elastic component 1086 and the first integrated cam 1087. The end face of the first rocker arm 10811 facing the first integrated cam 1087 is provided with a first cam surface 108111, and the end face of the third rocker arm 10821 facing the first integrated cam 1087 is provided with a third cam surface 108211. In addition, the first integrated cam 1087 includes a fifth cam surface 10871 facing the first rocker arm 10811 and a sixth cam surface 10872 facing the third rocker arm 10821. Along the axial direction of the rotating shaft mechanism 1, under the elastic force of the elastic component 1086, the first cam surface 108111 abuts against the fifth cam surface 10871, and the third cam surface 108211 abuts against the sixth cam surface 10872.

[0159] In this application, along the axial direction of each corresponding axis, the cam surface may include a protrusion and a recess, with an inclined surface present during the transition from the protrusion to the recess or vice versa. During the rotation of the first rocker arm assembly 1081 and the second rocker arm assembly 1082 around their corresponding axes, a corresponding damping force is generated when the inclined surfaces of the two abutting cam surfaces come into contact. The presence of this damping force enables the electronic device to self-unfold at the end of its unfolded state and self-close at the end of its closed state. Furthermore, under the action of this damping force, the user experiences a more noticeable tactile feedback when opening and closing the electronic device, thus enhancing the user experience.

[0160] It is understandable that increasing the number of abutting cam surfaces in the damping module 108 can increase the damping force provided by the rotating shaft mechanism 1. Based on this, we can continue to refer to... Figure 18 The damping module 108 may further include a second integrated cam 1088, which is sleeved on the first shaft 1083 and the second shaft 1084. The second integrated cam 1088 is located between the elastic component 1086 and the first rocker arm assembly 1081, and the second integrated cam 1088 is located between the elastic component 1086 and the second rocker arm assembly 1082. Then, the first rocker arm assembly 1081 is located between the first integrated cam 1087 and the second integrated cam 1088, and the second rocker arm assembly 1082 is located between the first integrated cam 1087 and the second integrated cam 1088.

[0161] Furthermore, the end face of the second rocker arm 10812 facing the second integrated cam 1088 is provided with a second cam surface 108121, and the end face of the fourth rocker arm 10822 facing the second integrated cam 1088 is provided with a fourth cam surface 108221. Additionally, the second integrated cam 1088 includes a seventh cam surface 10881 facing the second rocker arm 10812 and an eighth cam surface 10882 facing the fourth rocker arm 10822. Along the axial direction of the rotating shaft mechanism 1, under the elastic force of the elastic component 1086, the second cam surface 108121 abuts against the seventh cam surface 10881, and the fourth cam surface 108221 abuts against the eighth cam surface 10882. This allows the rotating shaft mechanism 1 to provide greater damping force, thereby improving the stability of electronic devices using this rotating shaft mechanism 1 in the unfolded, closed, or intermediate states. Furthermore, it effectively improves the user's feel during the opening and closing of electronic devices, thus enhancing the user experience.

[0162] In this application, in order for the elastic component 1086 to press together the first integrated cam 1087, the first rocker arm assembly 1081, and the second integrated cam 1088, and to press together the first integrated cam 1087, the second rocker arm, and the second integrated cam 1088, the damping module 108 may further include a first limiting member 1089. Specifically, along the axial direction of the rotating shaft mechanism 1, the first integrated cam 1087 is located between the first limiting member 1089 and the first rocker arm assembly 1081, and the first integrated cam 1087 is located between the first limiting member 1089 and the second rocker arm assembly 1082. In addition, one end of the first limiting member 1089 can be locked with the first shaft 1083, and the other end of the first limiting member 1089 can be locked with the second shaft 1084. Along the axial direction of the rotating shaft mechanism 1, under the elastic force of the elastic component 1086, the first integrated cam 1087 abuts against the first limiting member 1089, thereby preventing the structures set on the first shaft 1083 and the second shaft 1084 from falling off the corresponding shafts, so as to improve the structural reliability of the damping module 108.

[0163] You can continue to refer to Figure 18 The damping module 108 may further include a second limiting member 10810, and the elastic component 1086 may be located between the second integrated cam 1088 and the second limiting member 10810. One end of the second limiting member 10810 may be engaged with the first shaft 1083 for limiting, and the other end of the second limiting member 10810 may be engaged with the second shaft 1084 for limiting. In addition, along the axial direction of the first shaft 1083, the elastic module and the second limiting member 10810 may abut against each other, thereby preventing the structures disposed on the first shaft 1083 and the second shaft 1084 from falling off the corresponding shafts, thus improving the structural reliability of the damping module 108.

[0164] You can continue to refer to Figure 17 The first housing fixing bracket 1013 is also provided with a third track groove 10133. Additionally, as... Figure 18 As shown, the first rocker arm assembly 1081 is provided with a first guide rod 10813. The first rocker arm 10811 and the second rocker arm 10812 are connected by the first guide rod 10813. The first guide rod 10813 is inserted into the third track groove 10133 and can slide along the third track groove 10133.

[0165] Similarly, the second housing fixing frame 1014 is also provided with a fourth track groove 10143. The second swing arm assembly 1082 is provided with a second guide rod 10823, which is inserted into the fourth track groove 10143 and can slide along the fourth track groove 10143.

[0166] Reference Figure 20 , Figure 20This is a cross-sectional view of the pivot mechanism 1 provided in an embodiment of this application when the electronic device is in an unfolded state. It can be used to illustrate the relative positions of the first guide rod 10813 within the third track groove 10133 and the relative positions of the second guide rod 10823 within the fourth track groove 10143 in this state. Additionally, refer to... Figure 21 , Figure 21 This is a cross-sectional view of the rotating shaft mechanism 1 provided in an embodiment of this application when the electronic device is in a closed state. It can be used to illustrate the relative positions of the first guide rod 10813 within the third track groove 10133 and the second guide rod 10823 within the fourth track groove 10143 in this state. (See also...) Figure 20 and Figure 21 Electronic devices are in Figure 20 In the deployed state shown, the first guide rod 10813 is located at the end of the third track groove 10133 furthest from the main axis 102, and the second guide rod 10823 is located at the end of the fourth track groove 10143 furthest from the main axis 102. The electronic device is composed of... Figure 20 The unfolded state shown Figure 21 During the closed state shown, the first guide rod 10813 slides relative to the first housing fixing frame 1013 towards the main shaft 102 within the third track groove 10133, and the second guide rod 10823 slides relative to the second housing fixing frame 1014 towards the main shaft 102 within the fourth track groove 10143. The electronic device then... Figure 21 The closed state shown Figure 20 During the unfolding process shown, the first guide rod 10813 slides relative to the first housing fixing frame 1013 in the third track groove 10133 in a direction away from the main axis 102, and the second guide rod 10823 slides relative to the second housing fixing frame 1014 in the fourth track groove 10143 in a direction away from the main axis 102. The electronic device is in... Figure 21 In the closed state shown, the first guide rod 10813 is located at the end of the third track groove 10133 closest to the main shaft 102, and the second guide rod 10823 is located at the end of the fourth track groove 10143 closest to the main shaft 102.

[0167] It is worth mentioning that this application does not specifically limit the shape of the third track groove 10133 and the fourth track groove 10143. They can be obtained by fitting the motion trajectory of the first rotating component 1011 and the second rotating component 1012 during the process of the electronic device from the unfolded state to the closed state and from the closed state to the unfolded state. In this way, while realizing the folding and unfolding functions of the rotating shaft mechanism 1, when the electronic device is in the unfolded state, the first door plate 104, the second door plate 105 and the main shaft 102 can provide a flat support surface for the flexible display screen, and when the electronic device is in the closed state, the first door plate 104, the second door plate 105 and the main shaft 102 can form a screen-accommodating space that matches the bending shape of the foldable part of the flexible display screen.

[0168] As described above in the introduction of the pivot mechanism 1 provided in this application, the damping module 108 in the pivot mechanism 1 can provide a large damping force. This damping force can be transmitted to the corresponding housing mounting bracket through the first rocker arm assembly 1081 and the second rocker arm assembly 1082. When the pivot mechanism 1 is applied to an electronic device, the housing mounting bracket can transmit the damping force provided by the damping module 108 to the corresponding housing of the electronic device, thereby enabling the electronic device to stably maintain an unfolded state, a closed state, or an intermediate state between the unfolded and closed states, which is beneficial to improving the user experience. In addition, the damping force generated by the abutting cam surface in the pivot mechanism 1 enables the electronic device to have a self-unfolding function at the end of the unfolded state and a self-closing function at the end of the closed state. Furthermore, under the action of this damping force, the user can have a more noticeable tactile feedback when opening and closing the electronic device, thereby improving the user experience.

[0169] Additionally, refer to Figure 22 , Figure 22 This is another structural schematic diagram of the damping module 108 provided in an embodiment of this application. The difference from the above embodiment is that... Figure 22 In the damping module 108, each of the multiple gaskets 1085 can be simultaneously fitted onto the first shaft 1083 and the second shaft 1084. In this way, the rotation of each gasket 1085 relative to the first mounting part 1026 and the second mounting part 1027 can be restricted by the parallel arrangement of the first shaft 1083 and the second shaft 1084.

[0170] It is worth mentioning that, in Figure 22In the illustrated embodiment, at least a portion of at least one gasket 1085 is located between the first rocker arm 10811 and the second rocker arm 10812, and at least a portion of at least one gasket 1085 is located between the third rocker arm 10821 and the fourth rocker arm 10822. Exemplarily, at least a portion of at least one gasket 1085 is located between the first rocker arm 10811 and the first mounting portion 1026, at least a portion of at least one gasket 1085 is located between the second rocker arm 10812 and the first mounting portion 1026, at least a portion of at least one gasket 1085 is located between the third rocker arm 10821 and the second mounting portion 1027, and at least a portion of at least one gasket 1085 is located between the fourth rocker arm 10822 and the second mounting portion 1027.

[0171] Additionally, along the axial direction of the rotating shaft mechanism 1, under the elastic force of the elastic component 1086, the first rocker arm 10811 and the second rocker arm 10812 press at least a portion of at least one pad 1085 located between the first rocker arm 10811 and the second rocker arm 10812 against the first mounting portion 1026, and the third rocker arm 10821 and the fourth rocker arm 10822 press at least a portion of at least one pad 1085 located between the third rocker arm 10821 and the fourth rocker arm 10822 against the second mounting portion 1027.

[0172] In this application, the number of shims 1085 located between the first rocker arm 10811 and the second rocker arm 10812 is not limited, and there may be one or more shims. Similarly, there may also be one or more shims 1085 located between the third rocker arm 10821 and the fourth rocker arm 10822. Figure 22 Other structures of the damping module 108 shown, as well as the connection method between the damping module 108 and the first housing fixing frame 1013 and the second housing fixing frame 1014, can be set with reference to the above embodiments, and will not be described in detail here.

[0173] The rotating shaft mechanism 1 provided in the above embodiments of this application can be used for example... Figure 1 or Figure 2 The electronic device shown. A first housing holder 1013 can be fixedly connected to a housing located on the same side of the main shaft 102, and a second housing holder 1014 can be fixedly connected to another housing. For example, the first housing holder 1013 can be used with... Figure 1 The first housing 2 of the electronic device shown is fixedly connected, and the second housing mounting bracket 1014 can be used to connect with... Figure 1 The second housing 3 of the electronic device shown is fixedly connected. Based on this, it can be understood that the process of the first housing fixing bracket 1013 and the second housing fixing bracket 1014 rotating in opposite directions is also the process of the first housing 2 and the second housing 3 rotating in opposite directions.

[0174] Furthermore, the flexible display screen of the electronic device can be fixedly connected to the first housing 2 and the second housing 3, and the connection method can be, but is not limited to, adhesive bonding. Specifically, the flexible display screen can be bonded to a portion of the first support surface 2a of the first housing 2, and also to a portion of the second support surface 3a of the second housing 3. This allows the bearing surface 1a of the rotating shaft mechanism 1, the first support surface 2a of the first housing 2, and the second support surface 3a of the second housing 3 to jointly provide flat support for the flexible display screen when the electronic device is in the unfolded state, thus ensuring the integrity of the electronic device's shape in this unfolded state. During the process of the electronic device moving from the unfolded state to the closed state, the two housings rotate towards each other, causing the flexible display screen to rotate. This effectively prevents deformation of the flexible display screen, reducing the risk of damage.

[0175] It should be understood that, in order to achieve the above-described form of the electronic device, this application is not limited to the various embodiments of the rotating mechanism 1 mentioned above; any rotating mechanism 1 that can achieve the following state is acceptable:

[0176] When the electronic device is in the unfolded state, the bearing surface 1a of the rotating shaft mechanism 1, the first support surface 2a of the first housing, and the second support surface 3a of the second housing work together to provide flat support for the flexible display screen. During the process of the electronic device moving from the unfolded state to the closed state, the two housings of the electronic device can rotate in opposite directions, causing the flexible display screen to bend. Conversely, during the process of the electronic device moving from the closed state to the unfolded state, the two housings of the electronic device can rotate in opposite directions, causing the flexible display screen to unfold.

[0177] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A hinge mechanism for a foldable electronic device, the hinge mechanism being disposed opposite to a foldable portion of a flexible display screen of the electronic device, the electronic device being unfolded or closed via the hinge mechanism, characterized in that, The rotating mechanism includes a main shaft, a rotating module, a first door panel, and a second door panel. The rotating module includes a first rotating assembly, a second rotating assembly, a first housing fixing frame, and a second housing fixing frame. The first housing fixing frame and the second housing fixing frame are respectively disposed on opposite sides of the main shaft. The first rotating assembly is located between the first housing fixing frame and the second housing fixing frame, and the second rotating assembly is located between the first housing fixing frame and the second housing fixing frame. The first rotating assembly includes a first support arm, a first connector, and a first door panel fixing frame. The first support arm is rotatably connected to the main shaft and slidably connected to the first housing fixing frame. The first door panel fixing frame is rotatably connected to the second housing fixing frame. The first connector is located between the first support arm and the first door panel fixing frame, and is rotatably connected to both the first support arm and the first door panel fixing frame. Alternatively, the first connector may be rotatably connected to the main shaft or slidably connected to the main shaft. The second rotating assembly includes a second support arm, a second connector, and a second door panel fixing frame. The second support arm is rotatably connected to the main shaft and slidably connected to the second housing fixing frame. The second door panel fixing frame is rotatably connected to the first housing fixing frame. The second connector is located between the second support arm and the second door panel fixing frame, and is rotatably connected to both the second support arm and the second door panel fixing frame. Alternatively, the second connector may be rotatably connected to the main shaft or slidably connected to the main shaft. The first door panel is located on the side of the first door panel fixing frame facing the flexible display screen, and the first door panel is fixedly connected to the first door panel fixing frame; the second door panel is located on the side of the second door panel fixing frame facing the flexible display screen, and the second door panel is fixedly connected to the second door panel fixing frame.

2. The rotating shaft mechanism as described in claim 1, characterized in that, The first rotating assembly further includes a first connecting rod, which is located between the first support arm and the first connecting member. The first support arm is rotatably connected to the first connecting rod, and the first connecting member is rotatably connected to the first connecting rod. The axis of rotation of the first support arm relative to the first connecting rod is parallel to but does not coincide with the axis of rotation of the first connecting member relative to the first connecting rod. The second rotating assembly further includes a second connecting rod, which is located between the second support arm and the second connecting member. The second support arm is rotatably connected to the second connecting rod, and the second connecting member is rotatably connected to the second connecting rod. The axis of rotation of the second support arm relative to the second connecting rod is parallel to but does not coincide with the axis of rotation of the second connecting member relative to the second connecting rod.

3. The rotating shaft mechanism as described in claim 1 or 2, characterized in that, The first door panel fixing frame is provided with a first arc-shaped groove at the end facing the second housing fixing frame, and the second housing fixing frame is provided with a second arc-shaped rotating block. The second arc-shaped rotating block is installed in the first arc-shaped groove and can slide along the groove surface of the first arc-shaped groove. The second door panel fixing frame has a second arc-shaped groove at its end facing the first housing fixing frame. The first housing fixing frame has a first arc-shaped rotating block, which is installed in the second arc-shaped groove and can slide along the groove surface of the second arc-shaped groove.

4. The rotating shaft mechanism as described in claim 3, characterized in that, The axis of rotation of the second housing mounting bracket relative to the first door panel mounting bracket is located on the side of the first door panel mounting bracket facing the flexible display screen; the axis of rotation of the first housing mounting bracket relative to the second door panel mounting bracket is located on the side of the second door panel mounting bracket facing the flexible display screen.

5. The rotating shaft mechanism as described in any one of claims 1 to 4, characterized in that, The main shaft is provided with a first track groove and a second track groove; the first connecting member includes a first slider, the first slider is installed in the first track groove, and the first slider can slide relative to the main shaft along the first track groove to limit the movement trajectory of the first connecting member; The second connector includes a second slider, which is mounted in the second track groove and can slide relative to the main shaft along the second track groove to limit the movement trajectory of the second connector.

6. The rotating shaft mechanism according to any one of claims 1 to 4, characterized in that, The main shaft is provided with a first track groove and a second track groove; the first track groove is an arc-shaped groove, the first connecting member includes a first slider, the first slider is an arc-shaped slider, the first slider is installed in the first track groove, and the first slider can rotate relative to the main shaft along the first track groove to limit the movement trajectory of the first connecting member; The second track groove is an arc-shaped groove, and the second connector includes a second slider, which is an arc-shaped slider. The second slider is installed in the second track groove, and the second slider can rotate relative to the main shaft along the second track groove to limit the movement trajectory of the second connector.

7. The rotating shaft mechanism as described in claim 6, characterized in that, The first connector includes two first sliders. Along the axial direction of the rotating shaft mechanism, the two first sliders are respectively disposed at two ends of the first connector, and the axes of rotation of the two first sliders relative to the main shaft coincide. The second connector includes two second sliders. Along the axial direction of the rotating shaft mechanism, the two second sliders are respectively disposed at the two ends of the second connector, and the axes of rotation of the two first sliders relative to the main shaft coincide.

8. The rotating shaft mechanism according to any one of claims 1 to 7, characterized in that, The rotating shaft mechanism includes multiple rotating modules, with the first door panel fixedly connected to each first door panel fixing frame; and the second door panel fixedly connected to each second door panel fixing frame.

9. The rotating shaft mechanism according to any one of claims 1 to 8, characterized in that, The rotating shaft mechanism further includes a synchronization component, which includes a synchronization gear located between the first connecting member and the second connecting member along the axial direction of the rotating shaft mechanism. The end of the first connector facing the synchronous gear is provided with a first gear surface, and the end of the second connector facing the synchronous gear is provided with a second gear surface. The first gear surface meshes with the gear surface of the synchronous gear, and the second gear surface meshes with the gear surface of the synchronous gear.

10. The rotating shaft mechanism as described in claim 9, characterized in that, The first connecting member includes two first sliders. Along the axial direction of the rotating shaft mechanism, the two first sliders are respectively disposed at two ends of the first connecting member. The main shaft is provided with a first track groove for each first slider. Each first slider is installed in the corresponding first track groove, and each first slider can slide or rotate relative to the main shaft along the corresponding first track groove. The first gear surface is disposed on the first slider facing the synchronous gear. The second connector includes two second sliders. Along the axial direction of the rotating shaft mechanism, the two second sliders are respectively disposed at the two ends of the second connector. The main shaft is provided with a second track groove for each second slider. Each second slider is installed in the corresponding second track groove, and the second slider can slide or rotate relative to the main shaft along the second track groove. The second gear surface is disposed on the second slider facing the synchronous gear.

11. The rotating shaft mechanism according to any one of claims 1 to 10, characterized in that, The rotating shaft mechanism further includes a damping module, which includes a first rocker arm assembly, a second rocker arm assembly, an elastic component, and a first integrated cam; along the axial direction of the rotating shaft mechanism, the first rocker arm assembly is located between the elastic component and the first integrated cam, and the second rocker arm assembly is located between the elastic component and the first integrated cam; The first rocker arm assembly includes a first rocker arm, a second rocker arm, and a first guide rod. The first rocker arm and the second rocker arm are rotatably connected to the main shaft, and the first rocker arm and the second rocker arm are connected through the first guide rod. The first housing fixing frame is provided with a third track groove, the first guide rod is inserted into the third track groove, and the first guide rod can slide along the third track groove. The second rocker arm assembly includes a third rocker arm, a fourth rocker arm, and a second guide rod. The third rocker arm and the fourth rocker arm are rotatably connected to the main shaft, and the third rocker arm and the fourth rocker arm are connected through the second guide rod. The second housing fixing frame is provided with a fourth track groove, the second guide rod is inserted into the fourth track groove, and the second guide rod can slide along the fourth track groove. The first rocker arm has a first cam surface on its end face facing the first integrated cam, and the third rocker arm has a third cam surface on its end face facing the first integrated cam. The first integrated cam includes a fifth cam surface facing the first rocker arm and a sixth cam surface facing the third rocker arm. Along the axial direction of the rotating shaft mechanism, under the elastic force of the elastic component, the first cam surface abuts against the fifth cam surface, and the third cam surface abuts against the sixth cam surface.

12. The rotating shaft mechanism as described in claim 11, characterized in that, The damping module further includes a second integrated cam, the first rocker arm assembly is located between the first integrated cam and the second integrated cam, and the second rocker arm assembly is located between the first integrated cam and the second integrated cam; The second rocker arm has a second cam surface on its end face facing the second integrated cam, and the fourth rocker arm has a fourth cam surface on its end face facing the second integrated cam. The second integrated cam includes a seventh cam surface facing the second rocker arm and an eighth cam surface facing the fourth rocker arm. Along the axial direction of the rotating shaft mechanism, under the elastic force of the elastic component, the second cam surface abuts against the seventh cam surface, and the fourth cam surface abuts against the eighth cam surface.

13. The rotating shaft mechanism as described in claim 11 or 12, characterized in that, The main shaft also includes a first mounting part and a second mounting part. Along the axial direction of the rotating shaft mechanism, the first mounting part is located between the first rocker arm and the second rocker arm. The first rocker arm and the second rocker arm are rotatably connected to the first mounting part through a first shaft. Along the axial direction of the rotating shaft mechanism, the second mounting part is located between the third swing arm and the fourth swing arm, and the third swing arm and the fourth swing arm are rotatably connected to the second mounting part via a second shaft.

14. The rotating shaft mechanism as described in claim 13, characterized in that, The damping module further includes multiple gaskets, at least one of the gaskets being located between the first swing arm and the second swing arm; along the axial direction of the rotating shaft mechanism, under the elastic force of the elastic component, the first swing arm and the second swing arm press at least one of the gaskets located between the first swing arm and the second swing arm against the first mounting portion; At least one of the gaskets is located between the third swing arm and the fourth swing arm; along the axial direction of the rotating shaft mechanism, under the elastic force of the elastic component, the third swing arm and the fourth swing arm press at least one of the gaskets located between the third swing arm and the fourth swing arm against the second mounting portion.

15. The rotating shaft mechanism as described in claim 14, characterized in that, Along the axial direction of the rotating shaft mechanism, at least one side of the first mounting portion is provided with a first slot, at least one of the gaskets located between the first rocker arm and the second rocker arm is engaged in the first slot, and in the direction of rotation of the first rocker arm assembly relative to the main shaft, at least one of the gaskets located between the first rocker arm and the second rocker arm is fixed relative to the first mounting portion. Along the axial direction of the rotating shaft mechanism, at least one side of the second mounting portion is provided with a second slot, at least one of the gaskets located between the third rocker arm and the fourth rocker arm is engaged in the second slot, and in the direction of rotation of the second rocker arm assembly relative to the main shaft, at least one of the gaskets located between the third rocker arm and the fourth rocker arm is fixed relative to the second mounting portion.

16. The rotating shaft mechanism as described in claim 13, characterized in that, The damping module further includes a plurality of gaskets, each gasket being sleeved on the first shaft and the second shaft, and at least a portion of at least one gasket being located between the first rocker arm and the second rocker arm; along the axial direction of the rotating shaft mechanism, under the elastic force of the elastic component, the first rocker arm and the second rocker arm press at least a portion of at least one gasket located between the first rocker arm and the second rocker arm against the first mounting portion; At least a portion of at least one of the gaskets is located between the third rocker arm and the fourth rocker arm; along the axial direction of the pivot mechanism, under the elastic force of the elastic component, the third rocker arm and the fourth rocker arm press at least a portion of at least one of the gaskets located between the third rocker arm and the second mounting portion against the second mounting portion.

17. An electronic device, characterized in that, It includes a first housing, a second housing, a flexible display screen, and a rotating shaft mechanism as described in any one of claims 1 to 16, wherein: The first housing and the second housing are respectively disposed on opposite sides of the rotating shaft mechanism. The first housing fixing frame is fixedly connected to the first housing, and the second housing fixing frame is fixedly connected to the second housing. The flexible display screen continuously covers the first housing, the second housing, and the rotating shaft mechanism, and the flexible display screen is fixedly connected to the first housing and the second housing.

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