Rotating shaft mechanism and electronic device

Abstract

A rotating shaft mechanism (1) and an electronic device. The rotating shaft mechanism (1) comprises a first rotating module (112), a second rotating module (113), and a main shaft (111), wherein the first rotating module (112) and the second rotating module (113) are respectively arranged on two opposite sides of the main shaft (111); the first rotating module (112) comprises a first panel (1124) and a first arc arm (1121), at least part of the first arc arm (1121) is arranged on the surface of the first panel (1124) away from a flexible display screen, and the first arc arm (1121) is rotatably connected to the main shaft (111); the first panel (1124) is provided with at least two first limiting holes spaced apart in a first direction, a first connecting member (1125) is arranged in each first limiting hole, and the first connecting member (1125) is fixedly connected to the first arc arm (1121); at least two first limiting layers (1126) spaced apart in the first direction are arranged between the first panel (1124) and the first arc arm (1121), the first limiting layers (1126) and the first limiting holes are spaced apart from each other in a second direction, and the first limiting layers (1126) are fixedly connected to the first panel (1124) and the first arc arm (1121), respectively.

Description

Rotating shaft mechanism and electronic equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on November 27, 2023, with application number 202311598030.2 and application name “Hinge Mechanism and Electronic Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of electronic equipment, and in particular to a rotating shaft mechanism and electronic equipment. Background Art

[0004] For existing foldable electronic devices, screen creases and screen shading are core competitive advantages and are currently the main bottlenecks. When a foldable electronic device is flattened, the plane on which the screen rests can be called the horizontal reference plane (abbreviated as the horizontal plane). The screen shading quality in the folding axis area is strongly correlated with the angle between the hinge module's door panel and the horizontal plane. If the angle between the door panel and the horizontal plane is large, the screen will have localized convexities and concavities, which will directly lead to deterioration of the screen shading.

[0005] The mounting surface of the door panel is typically the side of the hinge module's curved arm facing the screen. Due to play and component dimensional fluctuations, when the unit is flattened, the surface of the curved arm used to mount the door panel will create a large angle with the horizontal plane. This creates a large angle between the door panel and the horizontal plane, affecting the screen's light and shadow quality. Therefore, minimizing this angle between the door panel and the horizontal plane when the unit is flattened is crucial for improving screen light and shadow quality.

[0006] Summary of the Invention

[0007] The present application provides a rotating shaft mechanism and an electronic device to reduce the angle between a door panel and a horizontal plane when the entire device is in a flat state.

[0008] In a first aspect, the present application provides a hinge mechanism for a foldable electronic device. The hinge mechanism is disposed opposite the foldable portion of a flexible display screen of the electronic device, and the electronic device is unfolded or closed by the hinge mechanism. The hinge mechanism includes a first rotating module, a second rotating module, and a main shaft, with the first and second rotating modules disposed on opposite sides of the main shaft. The first rotating module includes a first door panel and a first arc arm, the first door panel is used to support the flexible display screen, at least part of the first arc arm is arranged on the side of the first door panel away from the flexible display screen, and the first arc arm is rotatably connected to the main shaft; the first door panel is provided with at least two first limiting holes, and the at least two first limiting holes are spaced apart in the first direction, and a first connecting member is provided in the first limiting hole, and the first connecting member is fixedly connected to the first arc arm to fixedly connect the first door panel and the first arc arm; at least two first limiting layers are provided between the first door panel and the first arc arm, and the at least two first limiting layers are spaced apart in the first direction, and the first limiting layer and the first limiting hole are spaced apart in the second direction, and the first limiting layer is fixedly connected to the first door panel and the first arc arm respectively; the first direction is the axial direction of the rotating shaft mechanism, the second direction is perpendicular to the first direction, and the second direction is perpendicular to the thickness direction of the rotating shaft mechanism. The second rotating module includes a second door panel and a second arc arm, the second door panel is used to support the flexible display screen, at least part of the second arc arm is arranged on the side of the second door panel facing away from the flexible display screen, and the second arc arm is rotatably connected to the main shaft; the second door panel is provided with at least two second limiting holes, and at least two second limiting holes are arranged at intervals in the first direction, and a second connecting member is arranged in the second limiting hole, and the second connecting member is fixedly connected to the second arc arm to fixedly connect the second door panel and the second arc arm; at least two second limiting layers are provided between the second door panel and the second arc arm, and at least two second limiting layers are arranged at intervals in the first direction, and the second limiting layer and the second limiting hole are arranged at intervals in the second direction, and the second limiting layer is respectively fixedly connected to the second door panel and the second arc arm.

[0009] In the technical solution provided by the present application, the door panel and the arc arm are fixedly connected by multiple first connecting members and multiple first limiting layers. The multiple first connecting members are spaced apart in the first direction, which can limit the freedom of the door panel in the first direction and the second direction. The first limiting layer and the first limiting hole are spaced apart in the second direction, which can limit the freedom of the door panel in the third direction. In this way, the door panel can be locked to prevent the door panel from displacing relative to the arc arm during the opening and closing process of the entire machine. During the assembly stage of the hinge mechanism, the first connecting member limits the freedom of the door panel in the first direction and the second direction. The door panel has a certain degree of freedom in the third direction, or the door panel has a certain degree of rotational freedom. When the hinge mechanism is in a flattened state, the angle between the door panel and the horizontal plane can be changed by matching first limiting layers of different thicknesses, thereby overcoming the difference in angle between the surface of the arc arm used to install the door panel and the horizontal plane, thereby reducing the angle between the door panel and the horizontal plane when the entire machine is in a flattened state, making the angle between the door panel and the horizontal plane equal to or close to zero, and improving the screen light and shadow quality in the folding axis area of ​​the electronic device.

[0010] In a specific embodiment, the first limiting layer and the first limiting hole are offset in the first direction; and the second limiting layer and the second limiting hole are offset in the first direction. This can relatively stably limit the degree of freedom of the door panel in the first direction and the second direction, thereby stabilizing the position of the door panel.

[0011] In a specific embodiment, a portion of the at least two first limiting holes are arranged near one end of the first door panel in the first direction, while another portion of the first limiting holes are arranged near the other end of the first door panel in the first direction; a portion of the at least two first limiting layers are arranged near one end of the first door panel in the first direction, while another portion of the first limiting layers are arranged near the other end of the first door panel in the first direction. This can relatively stably limit the door panel's degrees of freedom in the first and second directions. A portion of the at least two second limiting holes are arranged near one end of the second door panel in the first direction, while another portion of the second limiting holes are arranged near the other end of the second door panel in the first direction; a portion of the at least two second limiting layers are arranged near one end of the second door panel in the first direction, while another portion of the second limiting layers are arranged near the other end of the second door panel in the first direction. This can also relatively stably limit the door panel's degrees of freedom in the first and second directions.

[0012] In a specific feasible implementation, the first door panel is provided with four first limiting holes, and two of the four first limiting holes are arranged near one end of the first door panel in the first direction, and the other two first limiting holes are arranged near the other end of the first door panel in the first direction; there are two first limiting layers arranged between the first door panel and the first arc arm, and one of the two first limiting layers is arranged near one end of the first door panel in the first direction, and the other first limiting layer is arranged near the other end of the first door panel in the first direction. The second door panel is provided with four second limiting holes, and two of the four second limiting holes are arranged near one end of the second door panel in the first direction, and the other two second limiting holes are arranged near the other end of the second door panel in the first direction; there are two second limiting layers arranged between the second door panel and the second arc arm, and one of the two second limiting layers is arranged near one end of the second door panel in the first direction, and the other second limiting layer is arranged near the other end of the second door panel in the first direction. The fixation and horizontal setting of the door panel can be achieved through fewer first connecting pieces and first limiting layers.

[0013] In a specific feasible implementation, among two first limiting holes and one first limiting layer arranged near the same end of the first door panel in the first direction, one first limiting layer is located between the two first limiting holes in the first direction; among two second limiting holes and one second limiting layer arranged near the same end of the second door panel in the first direction, one second limiting layer is located between the two second limiting holes in the first direction. One first limiting layer and two first limiting holes can form a layout similar to a "pin" shape, and the fixed connection between the door panel and the arc arm can be maintained relatively stably.

[0014] In a specific feasible implementation, the first door panel is provided with two first limiting holes, and one of the two first limiting holes is arranged near one end of the first door panel in the first direction, and the other first limiting hole is arranged near the other end of the first door panel in the first direction; there are four first limiting layers arranged between the first door panel and the first arc arm, and two of the four first limiting layers are arranged near one end of the first door panel in the first direction, and the other two first limiting layers are arranged near the other end of the first door panel in the first direction. The second door panel is provided with two second limiting holes, and one of the two second limiting holes is arranged near one end of the second door panel in the first direction, and the other second limiting hole is arranged near the other end of the second door panel in the first direction; there are four second limiting layers arranged between the second door panel and the second arc arm, and two of the four second limiting layers are arranged near one end of the second door panel in the first direction, and the other two second limiting layers are arranged near the other end of the second door panel in the first direction. The fixation and horizontal setting of the door panel can be achieved through fewer first connecting pieces and first limiting layers.

[0015] In a specific feasible implementation, among a first limiting hole and two first limiting layers provided near the same end of the first door panel in the first direction, the first limiting hole is located between the two first limiting layers in the first direction; among a second limiting hole and two second limiting layers provided near the same end of the second door panel in the first direction, the second limiting hole is located between the two second limiting layers in the first direction. A first limiting hole and two first limiting layers can form a layout similar to a "pin" character, which can relatively stably maintain the fixed connection between the door panel and the arc arm.

[0016] In a specific feasible implementation, a first protrusion is provided on the side of the first door panel facing away from the flexible display screen, and the first protrusion and the first limiting hole are spaced apart in the first direction; a first supporting surface is provided on the side of the main shaft facing the flexible display screen, and the first supporting surface corresponds to the first protrusion in the third direction, where the third direction is perpendicular to the first direction and the second direction; when the electronic device is unfolded to the flattened state, the end of the first protrusion away from the first door panel abuts against the first supporting surface. A second protrusion is provided on the side of the second door panel facing away from the flexible display screen, and the second protrusion and the second limiting hole are spaced apart in the first direction; a second supporting surface is provided on the side of the main shaft facing the flexible display screen, and the second supporting surface corresponds to the second protrusion in the third direction; when the electronic device is unfolded to the flattened state, the end of the second protrusion away from the second door panel abuts against the second supporting surface. In the area of the door panel not restricted by the first connecting member and the first limiting layer, by providing the first protrusion, the limiting of the door panel in the third direction is increased, lifting the door panel to prevent the door panel from collapsing due to factors such as its own deformation and gravity, ensuring that the door panel is horizontal.

[0017] In a specific feasible implementation, the first protrusion is located between two adjacent first limiting holes in the first direction; the second protrusion is located between two adjacent second limiting holes in the first direction. In the area of the door panel not restricted by the first connecting member and the first limiting layer, by providing the first protrusion, the limiting of the door panel in the third direction is increased, which can expand the control area of the angle between the door panel and the horizontal plane.

[0018] In a specific feasible implementation scheme, a third protrusion is provided on the side of the first door panel facing away from the flexible display screen, and the third protrusion and the first limiting hole are spaced apart in the first direction. A first limiting claw is provided on the end of the third protrusion away from the first door panel, and the first limiting claw extends along the second direction; a first limiting wall is provided on the side of the main shaft facing the flexible display screen, and the first limiting wall corresponds to the first limiting claw in the third direction, and the third direction is perpendicular to the first direction and the second direction. The first limiting wall extends along the second direction, and the first limiting wall and the main shaft form a first limiting groove with a first opening; during the unfolding process of the electronic device, the first limiting claw extends into the first limiting groove from the first opening, and when the electronic device is unfolded to a flattened state, the first limiting claw abuts against the first limiting wall. A fourth protrusion is provided on a side of the second door panel facing away from the flexible display screen. The fourth protrusion and the second limiting hole are spaced apart in the first direction. A second limiting claw is provided on the end of the fourth protrusion away from the second door panel. The second limiting claw extends in the second direction. A second limiting wall is provided on a side of the main shaft facing the flexible display screen. The second limiting wall corresponds to the second limiting claw in a third direction. The second limiting wall extends in the second direction. The second limiting wall and the main shaft form a second limiting groove having a second opening. During the unfolding process of the electronic device, the second limiting claw extends from the second opening into the second limiting groove. When the electronic device is unfolded to a flat state, the second limiting claw abuts against the second limiting wall. By providing the first limiting claw and the first limiting groove, the door panel is limited in the third direction, hooked, and prevented from tilting upward due to factors such as the door panel's own deformation and upward forces exerted by other components, thereby ensuring that the door panel remains horizontal.

[0019] In one specific embodiment, the third protrusion is located between two adjacent first limiting holes in the first direction; and the fourth protrusion is located between two adjacent second limiting holes in the first direction. In the area of ​​the door panel not constrained by the first connector and the first limiting layer, the first limiting claw and the first limiting groove are provided to further constrain the door panel in the third direction, thereby expanding the control range of the angle between the door panel and the horizontal plane.

[0020] In one specific embodiment, a third door panel is provided on the side of the main axis facing the flexible display. The third door panel is used to support the flexible display and is located between the first and second rotating modules. When the electronic device is unfolded to a flat position, the third door panel, the first door panel, and the second door panel are coplanar. The third door panel, the first door panel, and the second door panel jointly support the flexible display, improving the flatness of the flexible display when the electronic device is flattened, thereby enhancing the screen light and shadow quality in the folding axis area of ​​the electronic device.

[0021] In a second aspect, the present application further provides an electronic device comprising a first housing, a second housing, a flexible display, and a hinge mechanism as in any one of the possible implementations of the first aspect, wherein the first housing and the second housing are disposed on opposite sides of the hinge mechanism, the first housing is fixedly connected to the first rotating module, and the second housing is fixedly connected to the second rotating module; the flexible display continuously covers the first housing, the second housing, and the hinge mechanism, and the flexible display is fixedly connected to the first housing and the second housing. The screen light and shadow quality in the folding axis area of ​​the electronic device is high, which can enhance the user experience of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is a schematic structural diagram of a foldable electronic device provided in an embodiment of the present application;

[0023] FIG2 is a schematic diagram of a partial structure of a rotating shaft mechanism provided in an embodiment of the present application;

[0024] FIG3 is a schematic diagram of a partial structure of a rotating shaft mechanism in an expanded state provided in an embodiment of the present application;

[0025] FIG4 is a schematic structural diagram of a door panel of a rotating shaft mechanism provided in an embodiment of the present application;

[0026] FIG5 is a schematic cross-sectional view of a door panel of a rotating shaft mechanism according to an embodiment of the present application;

[0027] FIG6 is a schematic diagram of a method for fixing a door panel of a rotating shaft mechanism provided in an embodiment of the present application;

[0028] FIG7 is a schematic structural diagram of a door panel of a rotating shaft mechanism provided in an embodiment of the present application;

[0029] FIG8 is a schematic structural diagram of a door panel with another rotating shaft mechanism provided in an embodiment of the present application;

[0030] FIG9 is a schematic structural diagram of the rotating shaft mechanism provided in an embodiment of the present application.

[0031] Reference numerals: 1-rotating shaft mechanism; 1a-supporting surface of the rotating shaft mechanism; 111-main shaft; 114-third door panel; 112-first rotating module; 1121-first arc arm; 1122-first supporting arm; 1123-first housing bracket; 1124-first door panel; 1125-first connecting member; 1126-first limiting layer; 11241-first protrusion; 11242-first supporting surface; 11243-third protrusion; 11244-first limiting claw; 11245-first limiting wall; 11246-first limiting groove; 113-second rotating module; 1131-second arc arm; 1132-second supporting arm; 1133-second housing bracket; 1134-second door panel; 1135-second connecting member; 1136-second limiting layer; 2-first shell; 2a-support surface of the first shell; 3-second shell; 3a-support surface of the second shell. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted. The words expressing position and direction described in the embodiments of the present application are all explained with reference to the accompanying drawings as examples, but changes may be made as needed, and the changes made are all included in the scope of protection of the present application. The drawings in the embodiments of the present application are only used to illustrate the relative position relationship and do not represent the true proportion.

[0033] The following description sets forth specific details to facilitate understanding of the present application. However, the embodiments of the present application can be implemented in a variety of other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotations of the embodiments of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0034] For ease of understanding, the application scenarios of the hinge mechanism involved in this application are first described. The hinge mechanism provided in the embodiments of this application can be adapted to electronic devices, such as mobile terminals such as mobile phones, tablet computers, or laptop computers. As a possible application scenario, the hinge mechanism provided in the embodiments of this application can be adapted to foldable electronic devices as a component of the hinge module of the foldable electronic device.

[0035] Foldable electronic devices typically include a flexible display, a hinge module, and a housing. The housing comprises a first housing and a second housing, movably connected by the hinge module. When the foldable electronic device is opened or closed, the first and second housings rotate relative to each other, and the hinge module provides a damping force, causing the flexible display to flex.

[0036] First, reference is made to FIG1 , which shows a schematic diagram of the structure of a foldable electronic device provided in an embodiment of the present application. As shown in FIG1 , the foldable electronic device provided in an embodiment of the present application may include a hinge mechanism 1, a flexible display, and two housings. The hinge mechanism provided in an embodiment of the present application may be a component of the hinge mechanism 1. For ease of description, the two housings are designated as a first housing 2 and a second housing 3, respectively. The first housing 2 and the second housing 3 are located on either side of the hinge mechanism 1 and are rotatable about the hinge mechanism 1. When in use, the electronic device can be closed and unfolded according to different usage scenarios. The foldable electronic device provided in an embodiment of the present application may be an inward-folding electronic device. In the embodiment shown in FIG1 , the electronic device is in an intermediate state between the closed state and the unfolded state. The figure shows the structures of the support surface 1a of the hinge mechanism 1, the support surface 2a of the first housing 2, and the support surface 3a of the second housing 3. Here, the support surface 1a of the hinge mechanism 1 refers to the surface of the hinge mechanism 1 that supports the flexible display, the support surface 2a of the first housing 2 refers to the surface of the first housing 2 that supports the flexible display, and the support surface 3a of the second housing 3 refers to the surface of the second housing 3 that supports the flexible display.

[0037] The flexible display can continuously cover the support surface 2a of the first housing 2, the support surface 1a of the hinge mechanism 1, and the support surface 3a of the second housing 3. The flexible display can be fixedly connected to the support surface 2a of the first housing 2 and the support surface 3a of the second housing 3, and the connection method can be, but is not limited to, adhesive bonding. In this way, when the electronic device is in the unfolded state, the hinge mechanism 1, the first housing 2, and the second housing 3 can support the flexible display. During the relative rotation of the first housing 2 and the second housing 3 from the unfolded state to the closed state, or from the closed state to the unfolded state, the flexible display can bend or flatten along with the first housing 2 and the second housing 3.

[0038] Referring to Figure 2, Figure 2 shows a schematic diagram of the partial structure of the hinge mechanism provided in an embodiment of the present application. The hinge mechanism provided in an embodiment of the present application may include a main shaft 111 and two rotating modules, the two rotating modules being a first rotating module 112 and a second rotating module 113. The main shaft 111 may serve as a bearing component for the first rotating module 112 and the second rotating module 113, and the first rotating module 112 and the second rotating module 113 are respectively arranged on opposite sides of the main shaft 111. When the entire electronic device is in a flat state, the hinge mechanism is also in a flat state. When the entire electronic device is in a closed state, the hinge mechanism is also in a closed state.

[0039] For ease of description, the following embodiments of this application primarily illustrate the shaft mechanism using the specific configuration of the first rotating module 112 as an example, while the configuration of the second rotating module 113 can refer to that of the first rotating module 112. It should be noted that the design of the second rotating module 113 can be completely identical to that of the first rotating module 112, or it can simply refer to the components and connections included in the first rotating module 112. Other parameters can be adaptively adjusted and do not require complete consistency.

[0040] Referring to Figure 3, Figure 3 shows a partial structural schematic diagram of the hinge mechanism provided in an embodiment of the present application in an expanded state. In this embodiment of the present application, the first rotating module 112 may include a first curved arm 1121, a first support arm 1122, a first housing bracket 1123, and a first door panel 1124. The first door panel 1124 may be used to support and be fixedly connected to the flexible display screen. The first curved arm 1121 and the first support arm 1122 may be disposed on a side of the first door panel 1124 facing away from the flexible display screen. The first curved arm 1121 and the first support arm 1122 may be distributed along the length of the hinge mechanism and may be rotatably connected to the main shaft 111. The first housing bracket 1123 may be located on a side of the first curved arm 1121 and the first support arm 1122 facing away from the first door panel 1124. The longitudinal direction of the hinge mechanism may be understood as the direction extending along the axis about which the first housing 2 and the second housing 3 rotate about the hinge mechanism. The longitudinal direction of the hinge mechanism may also be referred to as the axial direction of the hinge mechanism. For ease of description, the longitudinal direction of the hinge mechanism is referred to as the first direction. The first housing bracket 1123 can be fixedly connected to the first housing, thereby achieving a fixed connection between the first housing and the first rotating module 112. The first housing bracket 1123 can be rotatably connected to the first arc arm 1121 and slidably connected to the first support arm 1122. During the expansion or closing of the electronic device, the first housing bracket 1123 rotates synchronously with the first housing, thereby driving the first arc arm 1121 and the first support arm 1122 to rotate synchronously about the main axis 111. In addition, the first door panel 1124 can be fixedly connected to the first arc arm 1121 and can rotate synchronously with the first arc arm 1121. Therefore, during the rotation of the first housing bracket 1123, the first door panel 1124 can also rotate along a predetermined trajectory, thereby providing a flat support for the flexible display when the electronic device is in the expanded state and providing a sufficient space for the flexible display when the electronic device is in the closed state, thereby ensuring the reliability of the flexible display. The structural form of the hinge mechanism shown in Figures 2 and 3 is only an example and is not intended to limit the present invention. In actual applications, other structural forms of hinge mechanisms may also be used.

[0041] Referring to Figures 4 and 5 , Figure 4 illustrates a schematic structural diagram of a door panel with a hinge mechanism according to an embodiment of the present application, and Figure 5 illustrates a schematic cross-sectional structural diagram of a door panel with a hinge mechanism according to an embodiment of the present application. In the following figures, the coordinate directions indicated by the y-axis represent a first direction, the x-axis represents a second direction, and the z-axis represents a third direction. The second direction is perpendicular to the first direction and perpendicular to the thickness of the hinge mechanism. Specifically, the second direction may be the direction extending along the plane of the flexible display screen. The third direction is perpendicular to the first and second directions. In the embodiment of the present application, as shown in Figures 4 and 5 , the first door panel 1124 is provided with at least two first retaining holes spaced apart in the first direction. A first connector 1125 is disposed within the first retaining holes. The first connector 1125 is fixedly connected to the first arc arm 1121 to securely connect the first door panel 1124 to the first arc arm 1121. In a specific implementation, the first connector 1125 may be a connector such as a screw or a pin. At least two first limiting layers 1126 are disposed between the first door panel 1124 and the first arc arm 1121. The at least two first limiting layers 1126 are spaced apart in the first direction. The first limiting layers 1126 and the first limiting holes are spaced apart in the second direction. The first limiting layers 1126 are respectively fixedly connected to the first door panel 1124 and the first arc arm 1121. In a specific implementation, the first limiting layers 1126 can be a layered structure formed by condensing glue. The projection of the first limiting layers 1126 in the third direction can be a variety of regular or irregular shapes, such as a circle, an ellipse, or a polygon, which is not limited in this application.

[0042] In the rotating shaft mechanism provided in the embodiment of the present application, the first door panel 1124 and the first arc arm 1121 are fixedly connected by a plurality of first connecting members 1125 and a plurality of first limiting layers 1126. The plurality of first connecting members 1125 are arranged at intervals in the first direction, which can limit the freedom of the first door panel 1124 in the first direction and the second direction. The first limiting layers 1126 and the first limiting holes are arranged at intervals in the second direction, which can limit the freedom of the first door panel 1124 in the third direction. In this way, the first door panel 1124 can be locked to prevent the first door panel 1124 from being displaced relative to the first arc arm 1121 during the opening and closing process of the whole machine. During the assembly stage of the rotating shaft mechanism, the first connecting members 1125 The freedom of the first door panel 1124 in the first direction and the second direction is limited, and the first door panel 1124 has a certain degree of freedom in the third direction, or the first door panel 1124 has a certain degree of rotational freedom. When the hinge mechanism is in a flattened state, the angle between the first door panel 1124 and the horizontal plane can be changed by matching the first limiting layer 1126 of different thicknesses, thereby overcoming the angle difference between the surface of the first arc arm 1121 used to install the first door panel 1124 and the horizontal plane, thereby reducing the angle between the first door panel 1124 and the horizontal plane when the entire machine is in a flattened state, and making the angle between the first door panel 1124 and the horizontal plane equal to or close to zero, thereby improving the screen light and shadow quality in the folding axis area of ​​the electronic device.

[0043] In specific implementation, the first limiting layer 1126 can be formed by dispensing glue, and can be adaptively formed according to the space between the first door panel 1124 and the first arc arm 1121. During the glue curing process, a plane pressure-maintaining curing process can be adopted. The characteristic that the thickness of the dispensing glue can be relatively adjusted according to the pressure maintenance can be used to absorb the angle difference between the surface of the first arc arm 1121 used to install the first door panel 1124 and the horizontal plane, thereby ensuring that the first door panel 1124 is level.

[0044] The installation process for the first door panel 1124 can be referred to as follows: Glue is applied to the first limiting layer 1126 at the designated location on the surface of the first arc arm 1121 for mounting the first door panel 1124 to maintain the fluidity of the glue; the first door panel 1124 is connected to the first arc arm 1121 via the first connector 1125 to pre-fix the first door panel 1124; a horizontal surface is used to maintain pressure on the first door panel 1124 to ensure that the first door panel 1124 is level, and the glue is allowed to cure to form the first limiting layer 1126. The first limiting layer 1126 and the first connector 1125 work together to ensure that the first door panel 1124 is firmly connected to the first arc arm 1121.

[0045] In a specific implementation, the first limiting layer 1126 and the first limiting holes may be arranged in a dislocation manner in the first direction, which can relatively stably limit the degrees of freedom of the first door panel 1124 in the first direction and the second direction, making the position of the first door panel 1124 stable. A part of the first limiting holes among at least two first limiting holes are arranged near one end of the first door panel 1124 in the first direction, and the other part of the first limiting holes are arranged near the other end of the first door panel 1124 in the first direction. That is, the multiple first limiting holes are respectively arranged at both ends of the first door panel 1124 in the first direction, which can relatively stably limit the degrees of freedom of the first door panel 1124 in the first direction and the second direction. Similarly, a part of the first limiting layers 1126 among at least two first limiting layers 1126 are arranged near one end of the first door panel 1124 in the first direction, and the other part of the first limiting layers 1126 are arranged near the other end of the first door panel 1124 in the first direction, which can also relatively stably limit the degrees of freedom of the first door panel 1124 in the first direction and the second direction.

[0046] FIG. 4 illustrates a fixing method of the door panel. As shown in FIG. 4, the first door panel 1124 is provided with four first limiting holes. Two of the four first limiting holes are arranged near one end of the first door panel 1124 in the first direction, and the other two first limiting holes are arranged near the other end of the first door panel 1124 in the first direction. Two first limiting layers 1126 are arranged between the first door panel 1124 and the first arc arm 1121. One of the two first limiting layers 1126 is arranged near one end of the first door panel 1124 in the first direction, and the other first limiting layer 1126 is arranged near the other end of the first door panel 1124 in the first direction. Thus, two first limiting holes and one first limiting layer 1126 are arranged at one end of the first door panel 1124 in the first direction, and two first limiting holes and one first limiting layer 1126 are also arranged at the other end of the first door panel 1124 in the first direction. The fixing and horizontal setting of the first door panel 1124 can be achieved through fewer first connecting members 1125 and first limiting layers 1126.

[0047] During specific implementation, among the two first limiting holes and one first limiting layer 1126 arranged near the same end of the first door panel 1124 in the first direction, one first limiting layer 1126 is located between the two first limiting holes in the first direction. One first limiting layer 1126 and the two first limiting holes can form a layout similar to a "pin" shape, which can relatively stably maintain the fixed connection between the first door panel 1124 and the first arc arm 1121. The first limiting holes and the first limiting layers 1126 at both ends of the first door panel 1124 in the first direction can be symmetrically arranged respectively, which is convenient for the processing and assembly of the first door panel 1124.

[0048] Referring to FIG. 6, FIG. 6 shows a schematic diagram of a fixing method for a door panel of a rotating shaft mechanism provided in an embodiment of the present application. FIG. 6 illustrates that the first door panel 1124 is provided with two first limiting holes. One of the two first limiting holes is arranged near one end of the first door panel 1124 in the first direction, and the other first limiting hole is arranged near the other end of the first door panel 1124 in the first direction. Four first limiting layers 1126 are provided between the first door panel 1124 and the first arc arm 1121. Two of the four first limiting layers 1126 are arranged near one end of the first door panel 1124 in the first direction, and the other two first limiting layers 1126 are arranged near the other end of the first door panel 1124 in the first direction. Thus, one first limiting hole and two first limiting layers 1126 are arranged at one end of the first door panel 1124 in the first direction, and one first limiting hole and two first limiting layers 1126 are also arranged at the other end of the first door panel 1124 in the first direction. The fixing and horizontal setting of the first door panel 1124 can be achieved through fewer first connecting members 1125 and first limiting layers 1126.

[0049] During specific implementation, among one first limiting hole and two first limiting layers 1126 arranged near the same end of the first door panel 1124 in the first direction, one first limiting hole is located between the two first limiting layers 1126 in the first direction. One first limiting hole and two first limiting layers 1126 can form a layout similar to a "pin" shape, and the fixed connection between the first door panel 1124 and the first arc arm 1121 can be maintained relatively stably. The first limiting holes and first limiting layers 1126 at both ends of the first door panel 1124 in the first direction can be symmetrically arranged respectively.

[0050] In practical applications, with the development trend of the whole electronic device towards being thinner and lighter, the door panel is also getting thinner and thinner. However, the length of the door panel is relatively long, and it is not easy to maintain the flatness of the whole door panel. The door panel is prone to deformation. In addition, the flexible printed circuit (FPC) and the like arranged under the door panel may exert an upward force on the door panel, resulting in local warping of the door panel. These factors will all affect the angle between the whole or part of the door panel and the horizontal plane when the whole machine is in a flattened state, making the angle between the door panel and the horizontal plane have a large uncertainty and affecting the light and shadow quality of the screen.

[0051] Referring to Figure 7, Figure 7 shows a schematic structural diagram of a door panel of a rotating shaft mechanism provided in an embodiment of the present application. To overcome the above-mentioned problems, a first protrusion 11241 is provided on the side of the first door panel 1124 facing away from the flexible display screen. The first protrusion 11241 and the first limiting hole are spaced apart in the first direction. In conjunction with the first protrusion 11241, a first supporting surface 11242 is provided on the side of the main shaft 111 facing the flexible display screen. The first supporting surface 11242 corresponds to the first protrusion 11241 in the third direction. When the electronic device is unfolded to a flattened state, the end of the first protrusion 11241 away from the first door panel 1124 abuts against the first supporting surface 11242. The setting of the first protrusion 11241 can expand the control area of ​​the angle between the first door panel 1124 and the horizontal plane. In the area of ​​the first door panel 1124 that is not constrained by the first connecting member 1125 and the first limiting layer 1126, the first protrusion 11241 is set to increase the limitation of the first door panel 1124 in the third direction, and the first door panel 1124 is lifted to prevent the first door panel 1124 from collapsing due to its own deformation and gravity, thereby ensuring that the first door panel 1124 is level.

[0052] In a specific implementation, the first protrusion 11241 can be located between two adjacent first limiting holes in the first direction. For example, when multiple first limiting holes are respectively arranged at both ends of the first door panel 1124 in the first direction, the first protrusion 11241 can be located in the middle area of ​​the first door panel 1124 in the first direction, that is, in the middle area of ​​the first door panel 1124 in the length direction. The end of the first protrusion 11241 away from the first door panel 1124 can be flat, and correspondingly, the first supporting surface 11242 is also flat, so that the first protrusion 11241 and the first supporting surface 11242 can cooperate more simply and reliably. Alternatively, the end of the first protrusion 11241 away from the first door panel 1124 can be curved, and correspondingly, the first supporting surface 11242 is also curved. After the first protrusion 11241 cooperates with the first supporting surface 11242, the position of the first protrusion 11241 is relatively stable, and the cooperation between the two is relatively reliable. In actual setting, a groove can be provided on the side of the main shaft 111 facing the flexible display screen, and the bottom surface of the groove can serve as the first supporting surface 11242, which can improve the position stability after the first protrusion 11241 and the first supporting surface 11242 are matched.

[0053] Referring to Figure 8, a schematic diagram of the structure of a door panel of another hinge mechanism provided in an embodiment of the present application is shown. A third protrusion 11243 is provided on the side of the first door panel 1124 facing away from the flexible display screen. The third protrusion 11243 is spaced apart from the first limiting hole in the first direction. A first limiting claw 11244 is provided on the end of the third protrusion 11243 facing away from the first door panel 1124. The first limiting claw 11244 extends in the second direction. A first limiting wall 11245 is provided on the side of the main shaft 111 facing the flexible display screen. The first limiting wall 11245 corresponds to the first limiting claw 11244 in the third direction and extends in the second direction. The first limiting wall 11245 and the main shaft 111 form a first limiting groove 11246 having a first opening. During the unfolding of the electronic device, the first limiting claw 11244 extends from the first opening into the first limiting groove 11246. When the electronic device is unfolded to a flattened state, the first limiting claw 11244 abuts against the first limiting wall 11245. The provision of the first limiting claw 11244 and the first limiting groove 11246 can expand the control area of ​​the angle between the first door panel 1124 and the horizontal plane. In the area of ​​the first door panel 1124 not constrained by the first connecting member 1125 and the first limiting layer 1126, the provision of the first limiting claw 11244 and the first limiting groove 11246 further limits the first door panel 1124 in the third direction, hooking the first door panel 1124, and preventing the first door panel 1124 from tilting upward due to factors such as its own deformation and upward forces exerted by other components, thereby ensuring that the first door panel 1124 remains horizontal.

[0054] In specific implementation, the third protrusion 11243 can be located between two adjacent first limiting holes in the first direction. For example, when multiple first limiting holes are respectively arranged at both ends of the first door panel 1124 in the first direction, the third protrusion 11243 can be set in the middle area of ​​the first door panel 1124 in the first direction, that is, in the middle area of ​​the first door panel 1124 in the length direction. The side of the first limiting claw 11244 that abuts the first limiting wall 11245 can be flat, and correspondingly, the side of the first limiting wall 11245 that abuts the first limiting claw 11244 can also be flat, making the first limiting claw 11244 and the first limiting wall 11245 cooperate more simply and reliably. Alternatively, the side of the first limiting claw 11244 that abuts the first limiting wall 11245 can be curved, and correspondingly, the side of the first limiting wall 11245 that abuts the first limiting claw 11244 can also be curved. After the first limiting claw 11244 and the first limiting wall 11245 cooperate, the position of the first limiting claw 11244 is relatively stable, and the cooperation between the two is relatively reliable. In actual configuration, the third protrusion 11243 is spaced apart from the first protrusion 11241 in the first direction.

[0055] The above-described specific embodiment can prevent the first door panel 1124 from partially collapsing or warping, maintain the overall flatness of the first door panel 1124 along its length, and ensure consistency in the angle between the first door panel 1124 and the horizontal plane, thereby improving the screen's light and shadow quality. It will be understood that the first protrusion 11241 and the first support surface 11242 form a mating structure, and the first limiting claw 11244 and the first limiting groove 11246 form a mating structure. These two mating structures can exist simultaneously, or only one of them can exist, and can be specifically configured according to actual needs.

[0056] As previously mentioned, the second rotating module 113 can be located on either side of the main shaft 111, separate from the first rotating module 112. In specific implementations, referring again to the aforementioned figures, the second rotating module 113 can include a second curved arm 1131, a second support arm 1132, a second housing bracket 1133, and a second door panel 1134. The second door panel 1134 can be used to support and be fixedly connected to the flexible display. The second curved arm 1131 and the second support arm 1132 can be located on a side of the second door panel 1134 facing away from the flexible display. The second curved arm 1131 and the second support arm 1132 can be distributed along the length of the rotating shaft mechanism and can be rotatably connected to the main shaft 111. The second housing bracket 1133 can be located on the sides of the second curved arm 1131 and the second support arm 1132 facing away from the second door panel 1134. The second housing bracket 1133 can be fixedly connected to the second housing, thereby achieving a fixed connection between the second housing and the second rotating module 113. The second housing bracket 1133 can be rotatably connected to the second arc arm 1131 and slidably connected to the second support arm 1132. During the unfolding or closing process of the electronic device, the second housing bracket 1133 rotates synchronously with the second housing, thereby driving the second arc arm 1131 and the second support arm 1132 to rotate synchronously around the main axis 111. In addition, the second door panel 1134 can be fixedly connected to the second arc arm 1131 and can rotate synchronously with the second arc arm 1131. Therefore, during the rotation of the second housing bracket 1133, the second door panel 1134 can also rotate along a specific trajectory, thereby providing a flat support for the flexible display when the electronic device is in the unfolded state, and providing a certain screen space for the flexible display when the electronic device is in the closed state.

[0057] In a specific implementation, the second door panel 1134 can be provided with at least two second limiting holes, at least two second limiting holes are spaced apart in the first direction, a second connecting member 1135 is provided in the second limiting hole, and the second connecting member 1135 is fixedly connected to the second arc arm to fixedly connect the second door panel 1134 and the second arc arm; at least two second limiting layers 1136 can be provided between the second door panel 1134 and the second arc arm, at least two second limiting layers 1136 are spaced apart in the first direction, the second limiting layer 1136 and the second limiting hole are spaced apart in the second direction, and the second limiting layer 1136 is fixedly connected to the second door panel 1134 and the second arc arm, respectively.

[0058] In a specific implementation, the second limiting layer 1136 and the second limiting hole can be staggered in the first direction. A portion of the at least two second limiting holes can be disposed near one end of the second door panel 1134 in the first direction, while another portion of the second limiting holes can be disposed near the other end of the second door panel 1134 in the first direction. A portion of the at least two second limiting layers 1136 can be disposed near one end of the second door panel 1134 in the first direction, while another portion of the second limiting layer 1136 can be disposed near the other end of the second door panel 1134 in the first direction.

[0059] As a possible implementation, the second door panel 1134 is provided with four second limiting holes, two of which are located near one end of the second door panel 1134 in the first direction, and the other two are located near the other end of the second door panel 1134 in the first direction; two second limiting layers 1136 are provided between the second door panel 1134 and the second arc arm, one of the two second limiting layers 1136 is located near one end of the second door panel 1134 in the first direction, and the other second limiting layer 1136 is located near the other end of the second door panel 1134 in the first direction. Of the two second limiting holes and one second limiting layer 1136 located near the same end of the second door panel 1134 in the first direction, one second limiting layer 1136 is located between the two second limiting holes in the first direction.

[0060] As another possible embodiment, the second door panel 1134 is provided with two second limiting holes, one of the two second limiting holes is provided near one end of the second door panel 1134 in the first direction, and the other second limiting hole is provided near the other end of the second door panel 1134 in the first direction; four second limiting layers 1136 are provided between the second door panel 1134 and the second arc arm, two of the four second limiting layers 1136 are provided near one end of the second door panel 1134 in the first direction, and the other two second limiting layers 1136 are provided near the other end of the second door panel 1134 in the first direction. Of the one second limiting hole and two second limiting layers 1136 provided near the same end of the second door panel 1134 in the first direction, one second limiting hole is located between the two second limiting layers 1136 in the first direction.

[0061] To improve the overall flatness of the door panel and ensure consistency of the angle between the door panel and the horizontal plane, a second protrusion can be provided on the side of the second door panel 1134 facing away from the flexible display screen. The second protrusion and the second limiting hole are spaced apart in the first direction. A second supporting surface is provided on the side of the main shaft 111 facing the flexible display screen. The second supporting surface and the second protrusion correspond in the third direction. When the electronic device is unfolded to a flattened state, the end of the second protrusion facing away from the second door panel 1134 abuts the second supporting surface. The second protrusion can be located between two adjacent second limiting holes in the first direction.

[0062] A fourth protrusion may be provided on a side of the second door panel 1134 facing away from the flexible display screen. The fourth protrusion is spaced apart from the second limiting hole in the first direction. A second limiting claw is provided on the end of the fourth protrusion away from the second door panel 1134. The second limiting claw extends in the second direction. A second limiting wall may be provided on a side of the main shaft 111 facing the flexible display screen. The second limiting wall corresponds to the second limiting claw in the third direction. The second limiting wall extends in the second direction and forms a second limiting groove having a second opening with the main shaft 111. During the unfolding of the electronic device, the second limiting claw may extend into the second limiting groove through the second opening. When the electronic device is unfolded to a flattened state, the second limiting claw abuts against the second limiting wall. The fourth protrusion may be located between two adjacent second limiting holes in the first direction.

[0063] Referring to Figure 9, Figure 9 shows a schematic structural diagram of the rotating shaft mechanism provided in an embodiment of the present application. In one possible specific implementation, a third door panel 114 may be provided on the side of the main shaft facing the flexible display screen, and the third door panel 114 is also used to support the flexible display screen. The third door panel 114 is located between the first rotating module and the second rotating module. When the electronic device is unfolded to a flat state, the third door panel 114, the first door panel 1124 and the second door panel 1134 are in the same plane. The third door panel 114 can be fixedly connected to the main shaft by a connector such as a screw, or the third door panel 114 can be bonded to the main shaft to achieve a fixed connection. When the electronic device is unfolded or closed, the middle door panel does not rotate.

[0064] It is understood that the various numbers involved in the embodiments of this application are only for the convenience of description and are not intended to limit the scope of the embodiments of this application. The order of the numbers of the above processes does not mean the order of execution. The order of execution of each process should be determined by its function and internal logic.

[0065] The above is only a specific implementation method of the present application, but the protection scope of the present application is not limited thereto. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in this application should be covered by the protection scope of the present application.

Claims

1. A rotating shaft mechanism for a foldable electronic device, the rotating shaft mechanism being disposed opposite to a foldable portion of a flexible display screen of the electronic device, and the electronic device being unfolded or closed through the rotating shaft mechanism, characterized in that, The rotating shaft mechanism includes a first rotating module, a second rotating module, and a main shaft. The first rotating module and the second rotating module are respectively arranged on two opposite sides of the main shaft; The first rotating module includes a first door panel and a first arc arm. The first door panel is used to support the flexible display screen. At least a part of the first arc arm is arranged on a side of the first door panel facing away from the flexible display screen. The first arc arm is rotatably connected to the main shaft; The first door panel is provided with at least two first limiting holes. The at least two first limiting holes are spaced apart in a first direction. A first connecting piece is arranged in the first limiting hole. The first connecting piece is fixedly connected to the first arc arm to fixedly connect the first door panel and the first arc arm; At least two first limiting layers are arranged between the first door panel and the first arc arm. The at least two first limiting layers are spaced apart in the first direction. The first limiting layer is spaced apart from the first limiting hole in a second direction. The first limiting layer is respectively fixedly connected to the first door panel and the first arc arm; The first direction is the axial direction of the rotating shaft mechanism, the second direction is perpendicular to the first direction, and the second direction is perpendicular to the thickness direction of the rotating shaft mechanism; The second rotating module includes a second door panel and a second arc arm. The second door panel is used to support the flexible display screen. At least a part of the second arc arm is arranged on a side of the second door panel facing away from the flexible display screen. The second arc arm is rotatably connected to the main shaft; The second door panel is provided with at least two second limiting holes. The at least two second limiting holes are spaced apart in the first direction. A second connecting piece is arranged in the second limiting hole. The second connecting piece is fixedly connected to the second arc arm to fixedly connect the second door panel and the second arc arm; At least two second limiting layers are arranged between the second door panel and the second arc arm. The at least two second limiting layers are spaced apart in the first direction. The second limiting layer is spaced apart from the second limiting hole in the second direction. The second limiting layer is respectively fixedly connected to the second door panel and the second arc arm.

2. The rotating shaft mechanism according to claim 1, wherein, The first limiting layer and the first limiting hole are arranged in a staggered manner in the first direction; The second limiting layer and the second limiting hole are arranged in a staggered manner in the first direction.

3. The rotating shaft mechanism according to claim 1 or 2, characterized in that, A part of the at least two first limiting holes is arranged near one end of the first door panel in the first direction, and another part of the at least two first limiting holes is arranged near the other end of the first door panel in the first direction; A part of the at least two first limiting layers is arranged near one end of the first door panel in the first direction, and another part of the at least two first limiting layers is arranged near the other end of the first door panel in the first direction; A part of the at least two second limiting holes is arranged near one end of the second door panel in the first direction, and the other part of the second limiting holes is arranged near the other end of the second door panel in the first direction; a part of the at least two second limiting layers is arranged near one end of the second door panel in the first direction, and the other part of the second limiting layers is arranged near the other end of the second door panel in the first direction.

4. The shaft rotating mechanism according to claim 3, wherein The first door panel is provided with four first limiting holes. Two of the four first limiting holes are arranged near one end of the first door panel in the first direction, and the other two first limiting holes are arranged near the other end of the first door panel in the first direction; two first limiting layers are arranged between the first door panel and the first arc arm. One of the two first limiting layers is arranged near one end of the first door panel in the first direction, and the other first limiting layer is arranged near the other end of the first door panel in the first direction; The second door panel is provided with four second limiting holes. Two of the four second limiting holes are arranged near one end of the second door panel in the first direction, and the other two second limiting holes are arranged near the other end of the second door panel in the first direction; two second limiting layers are arranged between the second door panel and the second arc arm. One of the two second limiting layers is arranged near one end of the second door panel in the first direction, and the other second limiting layer is arranged near the other end of the second door panel in the first direction.

5. The shaft mechanism according to claim 4, wherein Among the two first limiting holes and one first limiting layer arranged near the same end of the first door panel in the first direction, one first limiting layer is located between the two first limiting holes in the first direction; Among the two second limiting holes and one second limiting layer arranged near the same end of the second door panel in the first direction, one second limiting layer is located between the two second limiting holes in the first direction.

6. The shaft mechanism according to claim 3, characterized in that, The first door panel is provided with two first limiting holes. One of the two first limiting holes is arranged near one end of the first door panel in the first direction, and the other first limiting hole is arranged near the other end of the first door panel in the first direction; four first limiting layers are arranged between the first door panel and the first arc arm. Two of the four first limiting layers are arranged near one end of the first door panel in the first direction, and the other two first limiting layers are arranged near the other end of the first door panel in the first direction; The second door panel is provided with two second limiting holes, one of the two second limiting holes is arranged close to one end of the second door panel in the first direction, and the other second limiting hole is arranged close to the other end of the second door panel in the first direction; four second limiting layers are arranged between the second door panel and the second arc arm, two of the four second limiting layers are arranged close to one end of the second door panel in the first direction, and the other two second limiting layers are arranged close to the other end of the second door panel in the first direction.

7. The rotating shaft mechanism according to claim 6, wherein Among the one first limiting hole and the two first limiting layers arranged near the same end of the first door panel in the first direction, one first limiting hole is located between the two first limiting layers in the first direction; Among the one second position-limiting hole and the two second position-limiting layers arranged near the same end of the second door panel in the first direction, one second position-limiting hole is located between the two second position-limiting layers in the first direction.

8. The rotating shaft mechanism according to any one of claims 1 to 7, characterized in that, A first protrusion is provided on a side of the first door panel facing away from the flexible display screen, and the first protrusion and the first limiting hole are spaced apart in the first direction; a first supporting surface is provided on a side of the main shaft facing the flexible display screen, and the first supporting surface corresponds to the first protrusion in a third direction, and the third direction is perpendicular to the first direction and the second direction; when the electronic device is unfolded to a flattened state, an end of the first protrusion away from the first door panel abuts against the first supporting surface; A second protrusion is provided on a side of the second door panel facing away from the flexible display screen, and the second protrusion and the second limiting hole are spaced apart in the first direction; a second supporting surface is provided on a side of the main axis facing the flexible display screen, and the second supporting surface corresponds to the second protrusion in the third direction; when the electronic device is unfolded to a flattened state, an end of the second protrusion away from the second door panel abuts against the second supporting surface.

9. The rotating shaft mechanism according to claim 8, wherein, The first protrusion is located between two adjacent first limiting holes in the first direction; The second protrusion is located between two adjacent second limiting holes in the first direction.

10. The rotating shaft mechanism according to any one of claims 1 to 9, characterized in that, On a side of the first door panel facing away from the flexible display screen, a third protrusion is provided. The third protrusion and the first limiting hole are spaced apart in the first direction. At one end of the third protrusion away from the first door panel, a first limiting claw is provided, and the first limiting claw extends along the second direction. On a side of the main shaft facing the flexible display screen, a first limiting wall is provided. The first limiting wall and the first limiting claw correspond to each other in the third direction. The third direction is perpendicular to the first direction and the second direction. The first limiting wall extends along the second direction. The first limiting wall and the main shaft form a first limiting groove having a first opening. During the unfolding process of the electronic device, the first limiting claw extends into the first limiting groove through the first opening. When the electronic device is unfolded to a flat state, the first limiting claw abuts against the first limiting wall. On a side of the second door panel facing away from the flexible display screen, a fourth protrusion is provided. The fourth protrusion and the second limiting hole are spaced apart in the first direction. At one end of the fourth protrusion away from the second door panel, a second limiting claw is provided, and the second limiting claw extends along the second direction. On a side of the main shaft facing the flexible display screen, a second limiting wall is provided. The second limiting wall and the second limiting claw correspond to each other in the third direction. The second limiting wall extends along the second direction. The second limiting wall and the main shaft form a second limiting groove having a second opening. During the unfolding process of the electronic device, the second limiting claw extends into the second limiting groove through the second opening. When the electronic device is unfolded to a flat state, the second limiting claw abuts against the second limiting wall.

11. The rotating shaft mechanism according to claim 10, wherein, The third protrusion is located between two adjacent first limiting holes in the first direction. The fourth protrusion is located between two adjacent second limiting holes in the first direction.

12. The shaft mechanism according to any one of claims 1 to 11, characterized in that, On a side of the main shaft facing the flexible display screen, a third door panel is provided. The third door panel is used to support the flexible display screen. The third door panel is located between the first rotation module and the second rotation module. When the electronic device is unfolded to a flat state, the third door panel, the first door panel, and the second door panel are in the same plane.

13. An electronic device, characterized in that, It includes a first housing, a second housing, a flexible display screen, and a rotating shaft mechanism according to any one of claims 1 to 12. The first housing and the second housing are respectively disposed on opposite sides of the rotating shaft mechanism. The first housing is fixedly connected to the first rotation module, and the second housing is fixedly connected to the second rotation module. 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.

Images