Rotating shaft mechanism and electronic equipment

Abstract

The invention provides a rotating shaft mechanism and electronic equipment. The rotating shaft mechanism comprises a main shaft module and two supporting plates, the main shaft module comprises two rotating assemblies, two shell fixing frames and a main shaft, and the two rotating assemblies are located on the two opposite sides of the main shaft. A supporting arm of the rotating assembly is rotationally connected with the main shaft and is in sliding connection with the shell fixing frame arranged on the same side. Each supporting plate is rotationally connected with the shell fixing frame arranged on the same side. When the rotating shaft mechanism is in a closed state, the two supporting plates and the main shaft define a screen containing space, and the end, close to the main shaft, of each supporting plate is arranged opposite to the step face of the supporting arm arranged on the same side. Therefore, when the rotating shaft mechanism is impacted by an external load, the end part, close to the main shaft, of the supporting plate is propped against the corresponding step surface, so that the internal force conduction path of the main shaft module can be effectively improved, the displacement between the supporting arm and the shell fixing frame is reduced, the structural reliability of the rotating shaft mechanism is improved, and the service life of the rotating shaft mechanism is prolonged. And the structural reliability of the electronic equipment is improved.

Description

Technical Field

[0001] This application relates to the technical field of foldable electronic devices, and particularly to a rotating shaft mechanism and an electronic device. Background Art

[0002] With the gradual maturity of flexible display screen technology, it has promoted a very big change in the display mode of electronic devices. Foldable flexible screen mobile phones, foldable flexible screen tablet computers, and wearable electronic devices with foldable flexible screens are an important evolution direction of future intelligent electronic devices.

[0003] As a key component in foldable electronic devices, the rotating shaft mechanism can not only be used to realize the folding function of foldable electronic devices and provide a folding feel, but also be used to support the flexible display screen when the foldable electronic device is in a flattened state, and accommodate the flexible display screen when the foldable electronic device is in a closed state, so that the rotating shaft mechanism plays a role in protecting the flexible display screen. However, when the foldable electronic device is in a closed state, the distance between the bent part of the flexible display screen and the rotating shaft mechanism is relatively small. If the internal parts of the rotating shaft mechanism move out of position or the parts are deformed under the action of an external load, it may collide with the flexible display screen, which is likely to cause damage to the flexible display screen.

[0004] Based on this, how to improve the structural reliability of the rotating shaft mechanism has become a difficult problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0005] This application provides a rotating shaft mechanism and an electronic device to improve the structural reliability of the rotating shaft mechanism, reduce the risk of damage to the flexible display screen, and thus improve the structural reliability of the electronic device.

[0006] In a first aspect, the present application provides a rotating shaft mechanism for a foldable electronic device, and at least a part of the rotating shaft mechanism is correspondingly arranged with a bendable part of a flexible display screen of the electronic device. When specifically arranged, the rotating shaft mechanism may include a main shaft module, a first support plate, and a second support plate. The main shaft module includes a first rotating component, a second rotating component, a first housing fixing bracket, a second housing fixing bracket, and a main shaft. The first rotating component and the second rotating component are located on opposite sides of the main shaft. Among them, the first rotating component includes a first support arm. The first support arm is rotatably connected to the main shaft, the first support arm is slidably connected to the first housing fixing bracket, and the first support arm includes a first stepped surface on the side of the first support arm facing the flexible display screen. The second rotating component includes a second support arm. The second support arm is rotatably connected to the main shaft, the second support arm is slidably connected to the second housing fixing bracket, and the second support arm includes a second stepped surface on the side of the second support arm facing the flexible display screen. The first support plate is rotatably connected to the first housing fixing bracket, and the first support plate includes a first plate surface for connecting to the flexible display screen. The second support plate is rotatably connected to the second housing fixing bracket, and the second support plate includes a third plate surface for connecting to the flexible display screen. When the rotating shaft mechanism is in a closed state, a screen accommodating space is formed between the first plate surface of the first support plate, the third plate surface of the second support plate, and the surface of the main shaft facing the first support plate and the second support plate. At least a part of the end of the first support plate close to the main shaft is arranged opposite to the first stepped surface, and at least a part of the end of the second support plate close to the main shaft is arranged opposite to the second stepped surface. When the rotating shaft mechanism provided by the present application is in a closed state, when the main shaft is subjected to an external load, the misalignment amount between the first support arm and the first housing fixing bracket and the misalignment amount between the second support arm and the second housing fixing bracket can be reduced by the abutment between at least a part of the end of the first support plate close to the main shaft and the first stepped surface and the abutment between at least a part of the end of the second support plate close to the main shaft and the second stepped surface, so as to limit the deformation amount of the main shaft, improve the structural reliability of the rotating shaft mechanism, which is beneficial to reducing the risk of squeezing the part of the flexible display screen accommodated in the screen accommodating space by the rotating shaft mechanism, and further improving the structural reliability of the electronic device applying the rotating shaft mechanism.

[0007] It can be understood that when the rotating shaft mechanism is in a closed state, the distance between at least a part of the end of the first support plate close to the main shaft and the first stepped surface, and the distance between at least a part of the end of the second support plate close to the main shaft and the second stepped surface can both be adjusted according to the specific design dimensions of the rotating shaft mechanism, as long as it is ensured that when the main shaft is subjected to a certain external load, the purpose of reducing the deformation amount of the main shaft can be achieved by the abutment between at least a part of the end of the first support plate close to the main shaft and the first stepped surface and the abutment between at least a part of the end of the second support plate close to the main shaft and the second stepped surface.

[0008] In a possible implementation of the present application, the main shaft includes a main inner shaft and a main outer shaft, and the main inner shaft and the main outer shaft are interlocked. Then, when the rotating shaft mechanism is in a closed state, the projection of the end of the first support plate close to the main shaft in the direction from the main inner shaft to the main outer shaft overlaps at least partially with the projection of the first step surface in the direction from the main inner shaft to the main outer shaft; and the projection of the end of the second support plate close to the main shaft in the direction from the main inner shaft to the main outer shaft overlaps at least partially with the projection of the second step surface in the direction from the main inner shaft to the main outer shaft. In this way, when the main shaft of the rotating shaft mechanism is subjected to an external load along the direction from the main outer shaft to the main inner shaft, the end of the first support plate close to the main shaft can abut against the first step surface, and the end of the second support plate close to the main shaft can abut against the second step surface, thereby reducing the deformation of the main shaft.

[0009] In a possible implementation of the present application, the first support plate includes a first hook, and the first hook is located on a side of the first support plate away from the first plate surface, and the angle between the extension direction of the first hook and the first plate surface away from the main shaft is an acute angle. In addition, the first support arm also includes a first slot, and when the rotating shaft mechanism is in a closed state, the first hook is engaged with the first slot. In this way, when the spindle module is subjected to an external load, the end of the first support plate close to the main shaft can be prevented from slipping off the first step surface by the engagement of the first hook with the first slot, thereby improving the reliability of the abutment between the first support plate and the first support arm, thereby improving the structural reliability of the rotating shaft mechanism.

[0010] Similarly, the second support plate includes a second hook, and the second hook is located on the side of the second support plate away from the third plate surface, and the angle between the extension direction of the second hook and the third plate surface away from the main shaft is an acute angle. The second support arm also includes a second slot, and when the rotating shaft mechanism is in a closed state, the second hook is engaged with the second slot. In this way, when the spindle module is subjected to an external load, the end of the second support plate close to the main shaft can be prevented from slipping off the second step surface by the engagement of the second hook with the second slot, thereby improving the reliability of the abutment between the second support plate and the second support arm, thereby improving the structural reliability of the rotating shaft mechanism.

[0011] In a possible implementation of the present application, the first support plate includes a first plate portion and a second plate portion, the first plate portion is fixedly connected to the second plate portion, the second plate portion has a strength greater than that of the first plate portion, and the second plate portion is disposed closer to the spindle relative to the first plate portion. In this way, the strength of the end portion of the first support plate closer to the spindle is greater, which can reduce the risk of damage to the first support plate, thereby improving the structural reliability of the shaft mechanism.

[0012] Similarly, the second support plate may include a third plate portion and a fourth plate portion. The third plate portion and the fourth plate portion are fixedly connected. The strength of the fourth plate portion is greater than that of the third plate portion. The fourth plate portion is disposed closer to the main shaft relative to the third plate portion. This can make the strength of the end portion of the second support plate close to the main shaft relatively large, which can reduce the risk of damage to the second support plate, thereby improving the structural reliability of the rotating shaft mechanism.

[0013] In actual design, the first plate portion can be made of a relatively light material such as aluminum, while the second plate portion can be made of a material with relatively high structural strength such as stainless steel. This can ensure the structural reliability of the first support plate while avoiding excessive overall weight of the first support plate to meet the lightweight design requirements of the rotating shaft mechanism. In addition, the first plate portion and the second plate portion can be fixedly connected by, but not limited to, welding, riveting, or threaded connection to ensure the connection reliability between the first plate portion and the second plate portion.

[0014] Similarly, the material of the third plate portion can also be aluminum, and the material of the fourth plate portion can also be stainless steel. In addition, the third plate portion and the fourth plate portion can be fixedly connected by, but not limited to, welding, riveting, or threaded connection. This can ensure the structural reliability of the second support plate while avoiding excessive overall weight of the second support plate, thereby meeting the lightweight design requirements of the rotating shaft mechanism.

[0015] Based on the setting methods of the first support plate and the second support plate in the above implementation manners, in a possible implementation manner of the present application, the first hook and the second plate portion may be an integrally formed structure, and the second hook and the fourth plate portion may be an integrally formed structure. This can effectively improve the strength of the first hook and the second hook while improving the integration degree of the first support plate and the second support plate, which is beneficial to simplifying the structure of the main shaft module.

[0016] In a possible implementation manner of the present application, in order to achieve the sliding connection between the first support arm and the first housing fixing frame, the first housing fixing frame includes a first chute, and the first support arm is slidably installed in the first chute.

[0017] Similarly, the second housing fixing frame includes a second chute, and the second support arm is slidably installed in the second chute. Thus, the sliding connection between the second support arm and the second housing fixing frame is achieved.

[0018] In a possible implementation of the present application, the first rotating assembly further includes a first swing arm. The first swing arm is rotatably connected to the main shaft and is also rotatably connected to the first housing fixing bracket. The axes of rotation of the first swing arm and the first support arm around the main shaft are parallel but non-coincident. Similarly, the second rotating assembly further includes a second swing arm. The second swing arm is rotatably connected to the main shaft and is also rotatably connected to the second housing fixing bracket. The axes of rotation of the second swing arm and the second support arm around the main shaft are parallel but non-coincident. In this way, during the rotation of the rotating shaft mechanism, axial phase differential can be achieved between the support arm and the swing arm arranged on the same side, thereby realizing the telescopic movement of the two rotating assemblies, so that when the rotating shaft mechanism is in the flattened state, it can stably support the flexible display screen of the electronic device, and when the rotating shaft mechanism is in the closed state, it can form a screen accommodating space that meets the bending requirements of the flexible display screen.

[0019] In a possible implementation of the present application, to realize the rotational connection between the first swing arm and the second swing arm and the main shaft, the main shaft is provided with a first arc-shaped groove and a second arc-shaped groove. The first swing arm includes a first arc-shaped rotating block, and the first 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 swing arm includes a second arc-shaped rotating block, and the second 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. With such a design method, the first swing arm and the second swing arm can be rotationally connected to the main shaft through a virtual axis, which can effectively reduce the space occupied by the first swing arm and the second swing arm on the main shaft, thereby facilitating the miniaturized design of the rotating shaft mechanism.

[0020] In a possible implementation of the present application, the first support plate further includes a second plate surface, which is arranged opposite to the first plate surface. The second plate surface is provided with a second rotating part, and the first housing fixing bracket is provided with a first rotating groove. In this way, the second rotating part can be installed in the first rotating groove to realize the rotational connection between the first support plate and the first housing fixing bracket through the sliding of the second rotating part along the groove surface of the first rotating groove.

[0021] Similarly, the second support plate further includes a fourth plate surface, which is arranged opposite to the third plate surface. The fourth plate surface is provided with a second rotating part, and the second housing fixing bracket is provided with a second rotating groove. The second rotating part is installed in the second rotating groove, and the second rotating part can slide along the groove surface of the second rotating groove, thereby realizing the rotational connection between the second support plate and the second housing fixing bracket.

[0022] In a possible implementation of the present application, to enable the first support plate and the second support plate to rotate around the corresponding housing fixing brackets, the second plate surface of the first support plate can be provided with a first guiding part, and the first guiding part includes a first track groove. At least one of the first support arm and the first swing arm is provided with a first guiding structure, and the first guiding structure is inserted into the first track groove and can slide along the first track groove.

[0023] Similarly, a second guiding portion is further provided on a fourth plate surface of the second support plate. The second guiding portion includes a second track groove. At least one of the second support arm and the second swing arm is provided with a second guiding structure which is inserted into the second track groove and can slide along the second track groove.

[0024] In this way, when the first housing fixing frame and the second housing fixing frame rotate towards each other, the sliding of the first guiding structure in the first track groove can drive one end of the first support plate close to the main shaft to move in a direction away from the main shaft, and the sliding of the second guiding structure in the second track groove can drive one end of the second support plate close to the main shaft to move in a direction away from the main shaft, so that a screen accommodating space can be formed between the two support plates and the main shaft. In addition, when the first housing fixing frame and the second housing fixing frame rotate away from each other, the sliding of the first guiding structure in the first track groove can drive one end of the first support plate close to the main shaft to move towards the main shaft, and the sliding of the second guiding structure in the second track groove can drive one end of the second support plate close to the main shaft to move towards the main shaft, so that when in the flattened state, the first support plate, the second support plate and the main shaft form a flat supporting surface.

[0025] In a second aspect, the present application further provides an electronic device, which includes a first housing, a second housing, a flexible display screen and the rotating shaft mechanism of the first aspect. The first housing and the second housing are respectively arranged 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. When the electronic device provided in the present application is in the closed state, the risk of the bent portion of the flexible display screen being squeezed and failing by the rotating shaft mechanism is relatively low, so the structural reliability of the electronic device is relatively good. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the electronic device provided in an embodiment of the present application when in the closed state;

[0027] Figure 2 is a schematic diagram of the electronic device provided in an embodiment of the present application when in the flattened state;

[0028] Figure 3 is Figure 2 an exploded view of the electronic device shown in ;

[0029] Figure 4 is a schematic structural diagram of the main shaft module of the rotating shaft mechanism provided in an embodiment of the present application when in the flattened state;

[0030] Figure 5 is Figure 4Schematic diagram of the partial structure of the main shaft module shown in [description];

[0031] Figure 6 is Figure 5 exploded view of the structure shown in [description];

[0032] Figure 7 Schematic diagram of a structure of the first support plate provided by an embodiment of the present application;

[0033] Figure 8 Schematic diagram of the structure of the main shaft module when the rotating shaft mechanism provided by an embodiment of the present application is in the closed state;

[0034] Figure 9 is Figure 8 structural block diagram of the cooperating part of the rotating shaft mechanism and the bendable part of the flexible display screen in the closed state shown in [description];

[0035] Figure 10 is Figure 8 side view of the main shaft module shown in [description];

[0036] Figure 11 Cross-sectional view of the prior art main shaft module in the closed state provided by an embodiment of the present application;

[0037] Figure 12 Cross-sectional view of the main shaft module at the first support arm and the second support arm in the closed state provided by an embodiment of the present application;

[0038] Figure 13 is Figure 11 and Figure 12 strain comparison diagram of the flexible display screen when the main shaft module shown in [description] is under external load;

[0039] Figure 14 is Figure 12 enlarged view of the partial structure at position A of the main shaft module shown in [description];

[0040] Figure 15 Schematic diagram of a structure of the main shaft module in the intermediate state provided by an embodiment of the present application.

[0041] Reference numerals:

[0042] 1 - Rotating shaft mechanism; 101 - Main shaft module;

[0043] 1011 - First rotating assembly; 10111 - First swing arm; 101111 - First arc-shaped rotating block; 101112 - First guiding structure;

[0044] 10112 - First support arm;

[0045] 101121 - First step surface; 101122 - First card slot; 101123 - First slider;

[0046] 1012 - Second rotating assembly; 10121 - Second swing arm; 10122 - Second support arm;

[0047] 101221 - Second step surface; 101222 - Second card slot; 101223 - Second slider;

[0048] 1013 - Main shaft; 10131 - Main outer shaft; 101311 - First arc-shaped groove; 10132 - Main inner shaft;

[0049] 1014 - First housing fixing bracket; 10141 - First sliding groove; 10142 - First rotating groove;

[0050] 1015 - Second housing fixing bracket; 10151 - Second sliding groove; 10152 - Second rotating groove;

[0051] 1016 - First support plate; 10161 - First plate surface; 10162 - Second plate surface; 101621 - First rotating part; 101622 - First guiding part;

[0052] 1016221 - First track groove; 101623 - First catch; 1016a - First plate part; 1016b - Second plate part;

[0053] 1017 - Second support plate; 10171 - Third plate surface; 10173 - Second catch; 1017a - Third plate part;

[0054] 1017b - Fourth plate part;

[0055] 2 - First housing; 201 - Support surface of the first housing; 3 - Second housing; 301 - Support surface of the second housing; 4 - Flexible display screen;

[0056] 5 - First appearance cover; 6 - Second appearance cover; 7 - Screen accommodation space. Detailed implementation manners

[0057] In order to make the objectives, technical solutions, and advantages of this application clearer, the following will further describe this application in detail with reference to the accompanying drawings. However, the exemplary implementation manners can be implemented in various forms and should not be construed as limited to the implementation manners described herein. The same reference numerals in the drawings denote the same or similar structures, and thus their repeated descriptions will be omitted. The words expressing positions and directions described in the embodiments of this application are all illustrated with reference to the drawings, but can be changed according to needs, and all changes made are included within the protection scope of this application. The drawings in the embodiments of this application are only used to illustrate the relative position relationship, and they do not represent the actual scale.

[0058] It should be noted that specific details are set forth in the following description to facilitate the understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0059] To facilitate the understanding of the rotating shaft mechanism provided by the present application, its application scenarios will be introduced first below. Among them, the rotating shaft mechanism can be applied to, but not limited to, foldable electronic devices such as mobile phones, personal digital assistants (PDAs), laptop computers, or tablet computers.

[0060] Refer to Figure 1 , Figure 1 is a schematic structural diagram of the electronic device provided by the embodiment of the present application when it is in a closed state. In addition to including the rotating shaft mechanism 1, the electronic device may further include two housings and a flexible display screen ( Figure 1 not shown in the figure). For the convenience of description, in the present application, the two housings of the electronic device can be respectively named the first housing 2 and the second housing 3. Among them, the first housing 2 and the second housing 3 are located on both sides of the rotating shaft mechanism 1 and can rotate around the rotating shaft mechanism 1. The electronic device provided by the present application can be an inward-foldable electronic device, and when in use, the electronic device can be closed and flattened according to different usage scenarios.

[0061] Refer to Figure 2 , Figure 2 shows a schematic structural diagram of the electronic device when it is in a flattened state. The flexible display screen 4 can continuously cover the first housing 2, the second housing 3, and the rotating shaft mechanism 1 ( Figure 2 not shown in the figure, and reference can be made to Figure 1 ), then when the electronic device is in the flattened state as shown in Figure 2 , the rotating shaft mechanism 1, the first housing 2, and the second housing 3 can play a role in flatly supporting the flexible display screen 4.

[0062] In addition, refer to Figure 3 , Figure 3 is Figure 2Exploded view of the electronic device shown. In the embodiments of the present application, the flexible display screen 4 can be connected to the support surface 201 of the first housing and the support surface 301 of the second housing, and the connection method can be, but is not limited to, bonding. In addition to the above structure, the electronic device provided in the present application may further include a first appearance cover 5 and a second appearance cover 6. Among them, the first appearance cover 5 is disposed on the side of the first housing 2 facing away from the flexible display screen 4, and the second appearance cover 6 is disposed on the side of the second housing 3 facing away from the flexible display screen 4. The first appearance cover 5 and the second appearance cover 6 can serve as protective covers of the electronic device, so as to protect the whole electronic device while improving the appearance aesthetics of the electronic device.

[0063] It can be understood that the electronic device is from Figure 2 the flattened state shown to Figure 1 the closed state shown, or from Figure 1 the closed state shown to Figure 2 the flattened state shown, which is the process of the first housing 2 and the second housing 3 rotating around the rotating shaft mechanism 1. During this process, the flexible display screen 4 can be bent or flattened along with the first housing 2 and the second housing 3. As a key functional component in the foldable electronic device, the rotating shaft mechanism 1 can be provided corresponding to the bendable part of the flexible display screen 4. Therefore, its support for the bendable part of the flexible display screen 4 in Figure 2 the flattened state shown, and its accommodation and protection for the bendable part of the flexible display screen 4 in Figure 1 the closed state shown both play important roles.

[0064] Currently, in order to meet the design requirements of the thin and light electronic device, the setting space of each part structure of the electronic device is compressed. When the electronic device is in the closed state, the accommodation space provided by the rotating shaft mechanism for the bendable part of the flexible display screen is small. Also, due to the existence of the design tolerances of the flexible display screen and the rotating shaft mechanism, and when the electronic device is impacted by an external load, the parts of the rotating shaft mechanism will deform or be misaligned in position, etc. All these will make the distance between the bendable part of the flexible display screen and the parts of the rotating shaft mechanism small, and even cause the bendable part of the flexible display screen to be squeezed. And there is a large internal stress in the bendable part of the flexible display screen. When the external load causes this bendable part to be squeezed, under the action of stress superposition, the flexible display screen is prone to failure such as bright broken points or black spots.

[0065] In view of this, the rotating shaft mechanism provided in the present application adds a structure capable of protecting the flexible display screen, so as to improve the structural reliability of the rotating shaft mechanism while reducing the risk of the flexible display screen failing due to extrusion, thereby extending the service life of the flexible display screen and improving the overall structural reliability of the electronic device equipped with the rotating shaft mechanism. To facilitate the understanding of the technical solution of the present application, the antenna provided by the present application will be specifically described below in conjunction with the drawings and specific embodiments.

[0066] In the present application, in order to achieve the rotation function, the rotating shaft mechanism 1 may include a main shaft module, or may include multiple main shaft modules. Exemplarily, in the Figure 3 shown electronic device, the rotating shaft mechanism includes 4 main shaft modules. When the rotating shaft mechanism 1 includes multiple main shaft modules 101, the multiple main shaft modules 101 may be arranged at intervals along the axial direction of the rotating shaft mechanism 1. Among them, in the present application, the axial direction of the rotating shaft mechanism 1 is the extension direction of the axis around which the first housing 2 and the second housing 3 rotate with respect to the rotating shaft mechanism 1. It can be understood that the first housing 2 and the second housing 3 are rotationally connected through multiple main shaft modules 101, which can effectively improve the stability of the relative rotation of the first housing 2 and the second housing 3 of the electronic device with respect to the rotating shaft mechanism 1.

[0067] Refer to Figure 4 , Figure 4 is a schematic structural diagram of the main shaft module 101 when the rotating shaft mechanism provided by the embodiment of the present application is in a flattened state. The main shaft module 101 includes a first rotating component 1011, a second rotating component 1012, and a main shaft 1013. The main shaft 1013 can serve as a bearing component for the first rotating component 1011 and the second rotating component 1012. The first rotating component 1011 and the second rotating component 1012 are respectively arranged on opposite sides of the main shaft 1013 and are respectively rotationally connected to the main shaft 1013.

[0068] It is worth mentioning that in a possible embodiment of the present application, when the rotating shaft mechanism 1 includes multiple main shaft modules 101, the first rotating components 1011 and the second rotating components 1012 of the multiple main shaft modules 101 can both use the same main shaft 1013 as the bearing component to improve the integration degree of the rotating shaft mechanism 1. In some other possible embodiments of the present application, each main shaft module 101 can be provided with a separate main shaft 1013, so that the first rotating component 1011 and the second rotating component 1012 of each main shaft module 101 use the corresponding main shaft 1013 as the bearing component, which is beneficial to improving the layout flexibility of each main shaft module 101.

[0069] To facilitate the understanding of the structure of the main shaft module 101, reference can be made to Figure 5 , Figure 5 is Figure 4Partial structural schematic diagram of the main shaft module 101 shown in the figure. The first rotating component 1011 includes a first swing arm 10111 and a first support arm 10112. Among them, the first swing arm 10111 is rotatably connected to the main shaft 1013. In a possible embodiment of the present application, the first swing arm 10111 and the main shaft 1013 can be rotatably connected by means of a virtual axis. Here, the virtual axis refers to the axis of a circular arc structure. Two rotatably connected components can rotate relative to the virtual axis, and with the relative rotation of the two rotatably connected components, the position of the virtual axis is fixed. Specifically, when implementing, refer to Figure 6 , Figure 6 is Figure 5 an exploded view of the structure shown in the figure. The main shaft 1013 includes a main outer shaft 10131 and a main inner shaft 10132. The main inner shaft 10132 and the main outer shaft 10131 are buckled and arranged. The main outer shaft 10131 includes a first arc-shaped groove 101311. A first installation cavity is formed between the end face of the main inner shaft 10132 facing the main outer shaft 10131 and the first arc-shaped groove 101311. The first swing arm 10111 includes a first arc-shaped rotating block 101111. The first arc-shaped rotating block 101111 is installed in the first arc-shaped groove 101311, and the first arc-shaped rotating block 101111 can slide along the groove surface of the first arc-shaped groove 101311. Thus, the rotational connection between the first swing arm 10111 and the main shaft 1013 is realized by the sliding of the first arc-shaped rotating block 101111 along the groove surface of the first arc-shaped groove 101311 in the first installation cavity. It can be understood that by rotatably connecting the first swing arm 10111 and the main shaft 1013 by means of a virtual axis, it is beneficial to reduce the space occupied by the first swing arm 10111 on the main shaft 1013, thereby facilitating the reduction of the volume of the main shaft module 101 and facilitating the miniaturized design of the rotating shaft mechanism 1.

[0070] In some other possible embodiments of the present application, the first swing arm 10111 and the main shaft 1013 can also be rotatably connected by means of a physical axis to improve the connection reliability between the first swing arm 10111 and the main shaft 1013.

[0071] In the present application, the first support arm 10112 is also rotatably connected to the main shaft 1013. Exemplarily, the first support arm 10112 can be rotatably connected to the main shaft 1013 by a pin shaft to improve the connection reliability between the first support arm 10112 and the main shaft 1013. In some other possible embodiments of the present application, the first support arm 10112 can also be rotatably connected to the main shaft 1013 by means of a virtual axis to reduce the space occupied by the first support arm 10112 on the main shaft 1013, thereby facilitating the reduction of the volume of the main shaft module 101 and facilitating the miniaturized design of the rotating shaft mechanism 1.

[0072] Continue to refer to Figure 6, in the present application, the second rotating assembly 1012 can be set with reference to the first rotating assembly 1011. Briefly speaking, the second rotating assembly 1012 includes a second swing arm 10121 and a second support arm 10122. The second swing arm 10121 and the second support arm 10122 are also rotatably connected to the main shaft 1013. Among them, the specific implementation manner of the connection between the second swing arm 10121 and the main shaft 1013 can refer to the connection manner between the first swing arm 10111 and the main shaft 1013, and the specific implementation manner of the connection between the second support arm 10122 and the main shaft 1013 can refer to the connection manner between the first support arm 10112 and the main shaft 1013, and details thereof will not be elaborated here. In addition, in the present application, the second rotating assembly 1012 and the first rotating assembly 1011 can also be symmetrically arranged relative to the main shaft 1013, which is beneficial to simplifying the structure of the main shaft module 101, thereby simplifying the structure of the rotating shaft mechanism 1.

[0073] As Figure 6 shown, the main shaft module 101 provided by the embodiment of the present application further includes a first housing fixing bracket 1014 and a second housing fixing bracket 1015. Among them, the first housing fixing bracket 1014 is used for fixedly connecting with the first housing of the electronic device, and the second housing fixing bracket 1015 is used for fixedly connecting with the second housing of the electronic device. In addition, the first housing fixing bracket 1014 and the first rotating assembly 1011 are located on the same side of the main shaft 1013. The first housing fixing bracket 1014 includes a first sliding groove 10141, and the first support arm 10112 is slidably installed in the first sliding groove 10141. Specifically in implementation, the first housing fixing bracket 1014 includes two first sliding grooves 10141, and along the axial direction of the main shaft 1013, the openings of the two first sliding grooves 10141 are arranged oppositely. In addition, the first support arm 10112 includes two first sliding blocks 101123, and the two first sliding blocks 101123 are slidably installed in the two sliding grooves 10141 in a one-to-one correspondence. Then, during the rotation of the first housing fixing bracket 1014 around the main shaft 1013, the two first sliding blocks 101123 of the first support arm 10112 can slide relative to the first housing fixing bracket 1014 in the corresponding first sliding grooves 10141 respectively.

[0074] It can continue to refer to Figure 6 , the first swing arm 10111 is rotatably connected to the first housing fixing bracket 1014. In actual design, the first swing arm 10111 and the first housing fixing bracket 1014 can be rotatably connected through a pin shaft to ensure the reliability of the connection between the first swing arm 10111 and the first housing fixing bracket 1014.

[0075] It can be understood that in the embodiments of the present application, the rotation axes of the first swing arm 10111 and the first support arm 10112 connected to the main shaft 1013 are parallel but non-coincident. In this way, when the first housing fixing frame 1014 rotates around the main shaft 1013, it can drive the first swing arm 10111 and the first support arm 10112 to rotate around the main shaft 1013, and at the same time, it can also enable the first swing arm 10111 to slide relative to the first housing fixing frame 1014 within the first chute 10141.

[0076] When specifically setting the second housing fixing frame 1015, the second housing fixing frame 1015 and the second rotating assembly 1012 are located on the same side of the main shaft 1013. The second housing fixing frame 1015 includes two second chutes 10151, and the two second chutes 10151 can be set with reference to the above two first chutes 10141, which will not be elaborated here. In addition, the second support arm 10122 includes two second sliders 101223, and the two second sliders 101223 can be set with reference to the above two first sliders 101123, which will not be elaborated here. Then, the two second sliders 101223 of the second support arm 10122 are slidably installed in the two second chutes 10151 in a one-to-one correspondence. During the rotation of the second housing fixing frame 1015 around the main shaft 1013, the two second sliders 101223 of the second support arm 10122 can respectively slide relative to the second housing fixing frame 1015 within the corresponding second chutes 10151.

[0077] In the present application, the second swing arm 10121 is rotationally connected to the second housing fixing frame 1015. In actual design, the second swing arm 10121 and the second housing fixing frame 1015 can be rotationally connected through a pin shaft to ensure the reliability of the connection between the second swing arm 10121 and the second housing fixing frame 1015.

[0078] Similarly, in the embodiments of the present application, the rotation axes of the second swing arm 10121 and the second support arm 10122 connected to the main shaft 1013 are also parallel but non-coincident. In this way, when the second housing fixing frame 1015 rotates around the main shaft 1013, it can drive the second swing arm 10121 and the second support arm 10122 to rotate around the main shaft 1013, and at the same time, it can also enable the second swing arm 10121 to slide relative to the second housing fixing frame 1015 within the second chute 10151.

[0079] It can continue to refer to Figure 4 , in the present application, the rotating shaft mechanism 1 further includes a first support plate 1016 and a second support plate 1017. Among them, the first support plate 1016 is rotationally connected to the first housing fixing frame 1014, and the second support plate 1017 is rotationally connected to the second housing fixing frame 1015.

[0080] When specifically setting the first support plate 1016, reference can be made to Figure 7 , Figure 7 , which is a schematic structural diagram of the first support plate 1016 provided by the embodiment of the present application. Referring to Figure 4 and Figure 7 together, the first support plate 1016 includes a first plate surface 10161 and a second plate surface 10162 arranged back to back. The first plate surface 10161 is the plate surface of the first support plate 1016 for connecting with the flexible display screen 4. The second plate surface 10162 is provided with a first rotating portion 101621, and the first rotating portion 101621 can be an arc-shaped rotating portion by way of example.

[0081] In addition, referring to Figure 6 , in the embodiment of the present application, the first housing fixing frame 1014 includes a first rotating groove 10142, and the first rotating groove 10142 can be an arc-shaped groove such as an arc groove by way of example. Then, the first rotating portion 101621 of the first support plate 1016 can be installed in the first rotating groove 10142, so that the relative rotation between the first support plate 1016 and the first housing fixing frame 1014 can be realized by the sliding of the first rotating portion 101621 along the groove surface of the first rotating groove 10142.

[0082] It can be understood that, in order to improve the stability of the rotation of the first support plate 1016 around the first housing fixing frame 1014, the first housing fixing frame 1014 can be provided with a plurality of first rotating grooves 10142, and the first support plate 1016 can be provided with a plurality of first rotating portions 101621, so that the first rotating portions 101621 can be installed in a first rotating groove 10142 in a one-to-one correspondence, so as to realize the relative rotation between the first support plate 1016 and the first housing fixing frame 1014 by the sliding of each first rotating portion 101621 around the groove surface of the corresponding first rotating groove 10142.

[0083] The structure of the second support plate 1017 is similar to the structure of the first support plate 1016 shown in Figure 7 . The second support plate 1017 includes a third plate surface 10171 and a fourth plate surface ( Figure 4 not shown in the figure) arranged back to back. The third plate surface 10171 is the plate surface of the second support plate 1017 for connecting with the flexible display screen 4. The fourth plate surface is provided with a second rotating portion, and the second rotating portion can be set with reference to the first rotating portion 101621, and details thereof will not be elaborated herein.

[0084] In addition, the second housing fixture 1015 includes a second rotation groove 10152, which can be set with reference to the first rotation groove 10142 and will not be elaborated here. Then, the second rotation part of the second support plate 1017 can be installed in the second rotation groove of the second housing fixture 1015, so that the rotation connection between the second support plate 1017 and the second housing fixture 1015 can be realized by the sliding of the second rotation part along the groove surface of the second rotation groove 10152.

[0085] Reference can continue to be made to Figure 4 , in this flattened state, the first plate surface 10161 of the first support plate 1016, the third plate surface 10171 of the second support plate 1017, and the support surface of the main shaft 1013 can be in the same plane, which can be used for flatly supporting the bendable part of the flexible display screen 4.

[0086] From the introduction of the structure of the main shaft module 101 in the above embodiments, it can be known that the first housing fixture 1014 can drive the first support arm 10112 and the first swing arm 10111 to rotate around the main shaft 1013, and the second housing fixture 1015 can drive the second support arm 10122 and the second swing arm 10121 to rotate around the main shaft 1013. Based on this, it can be considered to drive the first support plate 1016 to rotate around the first housing fixture 1014 by the rotation of the first support arm 10112 and / or the first swing arm 10111 around the main shaft 1013. Similarly, the second support plate 1017 can also be driven to rotate around the second housing fixture 1015 by the rotation of the second support arm 10122 and / or the second swing arm 10121 around the main shaft 1013.

[0087] During specific implementation, reference can continue to be made to Figure 7 , a first guiding part 101622 can be provided on the second plate surface 10162 of the first support plate 1016, and the first guiding part 101622 can include a first track groove 1016221. In addition, in this application, as Figure 6 shown, the first swing arm 10111 can also be provided with a first guiding structure 101112, which can be but is not limited to a columnar structure, and the first guiding structure 101112 can be inserted into the first track groove 1016221 of the first guiding part 101622 of the first support plate 1016 and can slide along the first track groove 1016221. In this way, during the rotation of the first support arm 10112 around the main shaft 1013, the first support plate 1016 can be driven to rotate around the first housing fixture 1014 by the sliding of the first guiding structure 101112 in the first track groove 1016221.

[0088] It can be understood that in the present application, by adjusting the shape of the first track groove 1016221, the movement track of the first support plate 1016 can be adjusted. Exemplarily, in Figure 6 the illustrated embodiment, the first track groove 1016221 can be an arc-shaped groove.

[0089] In another possible embodiment of the present application, the first support plate 1016 can also be driven by the first support arm 10112 to rotate around the first housing fixing frame 1014. At this time, the above-mentioned first guiding structure 101112 can be arranged on the first support arm 10112. Then, the driving mode of the first support arm 10112 for the first support plate 1016 is similar to the driving mode of the above-mentioned first swing arm 10111 for the first support plate 1016, and details thereof will not be elaborated herein.

[0090] In addition, in some embodiments of the present application, guiding structures can be provided on both the first swing arm 10111 and the first support arm 10112, and guiding parts can be respectively arranged on the second plate surface 10162 of the first support plate 1016 corresponding to the guiding structures of the first swing arm 10111 and the first support arm 10112. Thus, by the sliding of the guiding structure of the first swing arm 10111 in the track groove of the corresponding guiding part of the first support plate 1016, and the sliding of the guiding structure of the first support arm 10112 in the track groove of the corresponding guiding part of the first support plate 1016, the rotation of the first swing arm 10111 and the first support arm 10112 driving the first support plate 1016 around the first housing fixing frame 1014 is realized.

[0091] In the embodiment of the present application, the driving mode of the second support plate 1017 rotating around the second housing fixing frame 1015 can be set with reference to the driving mode of the above-mentioned first support plate 1016 rotating around the second housing fixing frame 1015, and details thereof will not be elaborated herein.

[0092] From the introduction of the rotating shaft mechanism 1 provided in the present application in the above text, it can be understood that during the process of the rotating shaft mechanism 1 from the flattened state to the closed state, the first housing fixing frame 1014 and the second housing fixing frame 1015 rotate towards each other, and the first support arm 10112 and / or the first swing arm 10111 drive the end of the first support plate 1016 close to the main shaft 1013 to move in a direction away from the main shaft 1013, and the second support arm 10122 and / or the second swing arm 10121 drive the end of the second support plate 1017 close to the main shaft 1013 to move in a direction away from the main shaft 1013. In this way, with reference to Figure 8 , Figure 8 FIG. 18 is a schematic structural diagram of the main shaft module 101 in the closed state of the rotating shaft mechanism provided in the embodiment of the present application. In this closed state, the first support plate 1016, the second support plate 1017 and the main shaft 1013 can form a screen accommodating space 7.

[0093] Also, since the first plate surface 10161 of the first support plate 1016 and the third plate surface 10171 of the second support plate 1017 can be used to connect with the flexible display screen 4, when the electronic device is in the closed state, the bendable part of the flexible display screen 4 can be accommodated in the above-mentioned screen accommodation space 7. Specifically, reference can be made to Figure 9 , Figure 9 For Figure 8 the structural block diagram of the cooperation between the rotating shaft mechanism 1 and the bendable part of the flexible display screen 4 in the closed state shown in Figure 9 It can be seen that by using the rotating shaft mechanism 1 provided in the present application, in the closed state, a screen accommodation space 7 can be formed between the first plate surface 10161 of the first support plate 1016, the third plate surface 10171 of the second support plate 1017, and the surface of the main shaft 1013 facing the first support plate 1016 and the second support plate 1017. In this way, when the bendable part of the flexible display screen 4 of the electronic device is accommodated in the screen accommodation space 7, it can form a shape similar to a water droplet.

[0094] Refer to Figure 10 , Figure 10 For Figure 8 a side view of the main shaft module 101 shown in

[0095] which can be used to show the structure of the first rotating component 1011 side of the main shaft module 101 when the rotating shaft mechanism is in the closed state. From the introduction of the specific structure of the main shaft module 101 in the embodiments of the present application above, it can be understood that since in the first rotating component 1011 and the second rotating component 1012, the first support arm 10112 and the second support arm 10122 are respectively slidably connected to the corresponding housing fixing frames, and the first swing arm 10111 and the second swing arm 10121 are respectively rotatably connected to the corresponding housing fixing frames, when the first rotating component 1011 and the second rotating component 1012 are symmetrically arranged with respect to the main shaft 1013, the main shaft module 101 can be axially divided into a sliding area and a rotating area, where the sliding area is the area where the first support arm 10112 and the second support arm 10122 are located, and the rotating area is the area where the first swing arm 10111 and the second swing arm 10121 are located.

[0095] In the present application, a force simulation analysis of the main shaft module 101 in the closed state can be performed. Exemplarily, a simulation analysis of the main shaft module 101 can be performed in the scenario of the electronic device falling, and the rotating shaft mechanism 1 is the main force-bearing component, to understand the deformation trend of the main shaft module 101 in the falling scenario. Specifically, in Figure 10 , the Z direction is used to indicate the falling direction of the electronic device, and at this time, the external load F acts on the main outer shaft 10131 along the direction from the main outer shaft 10131 to the main inner shaft 10132 (which can also be understood as the -Z direction).

[0096] Refer toFigure 11 , Figure 11 This is a cross-sectional view of the prior art spindle module 101 provided by the embodiments of the present application in a closed state. Figure 11 It is used to show the force conduction and movement trend among the components in the sliding area of the spindle module 101 when the spindle 1013 is subjected to an external load F in the above-mentioned drop scenario for the prior art spindle module 101. Specifically, as Figure 11 shown, since the first support arm 10112 is rotatably connected to the spindle 1013, the external load F applied to the spindle 1013 can be conducted to the first support arm 10112 through the rotating pair between the spindle 1013 and the first support arm 10112. In addition, since there is no direct connection between the first housing fixing bracket 1014 and the spindle 1013, in the drop scenario, when the spindle 1013 is subjected to the external load F, the first housing fixing bracket 1014 will be subjected to a reaction force F1 due to inertia, and the reaction force F1 received by the first housing fixing bracket 1014 is equal in magnitude and opposite in direction to the above-mentioned external load F. At this time, the force F received by the first support arm 10112 is equal in magnitude and opposite in direction to the force F1 received by the first housing fixing member. Also, since the first support arm 10112 is installed in the first chute 10141 of the first housing fixing bracket 1014, there will be a dislocation between the first support arm 10112 and the first housing fixing bracket 1014. Similarly, under the action of the external load F, the movement trend of the second support arm 10122 is similar to that of the first support arm 10112, so the parts of the spindle 1013 located in the sliding area all move towards the directions of the first housing fixing bracket 1014 and the second housing fixing bracket 1015.

[0097] Since Figure 11 as shown, when the spindle module 101 is under the action of the above-mentioned external load F, the spindle 1013 will undergo a certain amount of deformation. Also, since the direction of the external load F is basically the same as the direction of the relative sliding of each support arm with respect to the housing fixing bracket, and the parts of the spindle 1013 located in the sliding area are not effectively supported, the spindle 1013 will deform along the Figure 10 shape of the dotted line shown in Figure 10 It can be seen that after the spindle module 101 deforms, the collapse amount in its sliding area is (a - b), and the collapse amount in the rotating area is (a - c), where a is the Figure 11 height of the spindle module 101 before deformation along the direction from the main outer shaft 10131 to the main inner shaft 10132 shown in Figure 11 , b is the Figure 11 height of the sliding area of the spindle module 101 after deformation along the direction from the main outer shaft 10131 to the main inner shaft 10132 shown in

[0098] As can be seen from the above simulation analysis, in the above-mentioned drop scenario of the prior art rotating shaft mechanism 1, the collapse amount of the sliding area of the main shaft module 101 is significantly greater than that of the rotating area of the main shaft module 101. Combining the introduction of the capacitive screen space 7 formed by the rotating shaft mechanism 1 in the closed state in the above text, it can be understood that under the action of the external load F, the gap between the main shaft 1013 and the bendable part of the flexible display screen 4 accommodated in the capacitive screen space 7 decreases, and the gap between the part of the main shaft 1013 located in the sliding area and the bendable part of the flexible display screen 4 is smaller than the gap between the part of the main shaft 1013 located in the rotating area and the bendable part of the flexible display screen 4. Based on this, how to reduce the deformation amount of the part of the main shaft 1013 located in the sliding area is the key to reducing the risk of extrusion of the bendable part of the flexible display screen 4 by the rotating shaft mechanism 1.

[0099] To solve the above problems, the present application improves the structure of the main shaft module 101 to change the internal force conduction path of the main shaft module 101, thereby achieving the purpose of reducing the collapse amount of the sliding area of the main shaft module 101. Specifically, during implementation, refer to Figure 12 , Figure 12 which is a cross-sectional view of the first support arm 10112 and the second support arm 10122 of the main shaft module 101 provided in the embodiment of the present application in the closed state. In the present application, the first support arm 10112 includes a first stepped surface 101121. In Figure 12 the shown closed state, at least part of the end of the first support plate 1016 close to the main shaft 1013 is disposed opposite to the first stepped surface 101121. Then, the projection of the end of the first support plate 1016 close to the main shaft 1013 in the direction from the main inner shaft 10132 to the main outer shaft 10131 overlaps at least part of the projection of the first stepped surface 101121 in the direction from the main inner shaft 10132 to the main outer shaft 10131.

[0100] Continue to refer to Figure 12 , Figure 12Also shown is the path of internal force conduction within the main shaft module 101 when it is subjected to an external load F. Specifically, the external load F received by the main shaft 1013 can be conducted to the first support arm 10112 through the rotating pair between the main shaft 1013 and the first support arm 10112. At the same time, the first housing fixing bracket 1014 receives a reaction force F1, and this reaction force F1 will be conducted to the first support plate 1016 through the rotating pair between the first housing fixing bracket 1014 and the first support plate 1016. However, in the main shaft module 101 provided in this application, at least part of the end of the first support plate 1016 close to the main shaft 1013 is disposed opposite to at least part of the first step surface 101121 of the first support arm 10112. Then, when the main shaft module 101 is subjected to the external load F, at least part of the end of the first support plate 1016 close to the main shaft 1013 can abut against the first step surface 101121 of the first support arm 10112, which can effectively reduce the misalignment amount between the first support arm 10112 and the first housing fixing bracket 1014, thereby limiting the deformation amount of the main shaft 1013.

[0101] The second support arm 10122 can be set with reference to the first support arm 10112. Then, the second support arm 10122 can include a second step surface 101221. When the rotating shaft mechanism is in a closed state, at least part of the end of the second support plate 1017 close to the main shaft 1013 is disposed opposite to the second step surface 101221. That is to say, the projection of the end of the second support plate 1017 close to the main shaft 1013 in the direction from the main inner shaft 10132 to the main outer shaft 10131 overlaps at least part of the projection of the second step surface 101221 in the direction from the main inner shaft 10132 to the main outer shaft 10131. In this way, when the main shaft module 101 is subjected to the external load F, the misalignment amount between the second support arm 10122 and the second housing fixing bracket 1015 can be reduced by the abutment of at least part of the end of the second support plate 1017 close to the main shaft 1013 against the second step surface 101221 of the second support arm 10122, thereby limiting the deformation amount of the main shaft 1013 and improving the structural reliability of the main shaft module 101.

[0102] Refer to Figure 13 , Figure 13 For Figure 11 and Figure 12 the comparison diagram of the micro-strain of the flexible display screen 4 when the main shaft module 101 shown in Figure 13 is subjected to the external load F, where the ordinate is the micro-strain value of the flexible display screen 4 when the main shaft module 101 is subjected to the external load F. It can be seen from Figure 11 that compared with the micro-strain value of the flexible display screen 4 of the prior art main shaft module shown in Figure 12The micro-strain value of the flexible display screen 4 is significantly reduced when the spindle module 101 of the present application is subjected to the external load F. Based on this, it can be understood that when the spindle module 101 provided in the embodiment of the present application is subjected to the external load F, at least part of the end of the first support plate 1016 close to the spindle 1013 can abut against the first step surface 101121 of the first support arm 10112, and at least part of the end of the second support plate 1017 close to the spindle 1013 can abut against the second step surface 101221 of the second support arm 10122, which can effectively reduce the displacement between each support arm and the corresponding housing fixing frame, so as to limit the deformation of the spindle 1013, thereby effectively reducing the strain of the flexible display screen 4 caused by the deformation of the spindle 1013. Therefore, the application of the rotating shaft mechanism 1 provided in the embodiment of the present application can effectively reduce the risk of failure of the flexible display screen 4 due to extrusion, which is conducive to extending the service life of the flexible display screen 4.

[0103] In addition, refer to Figure 14 , Figure 14 for Figure 12 The enlarged view of the local structure of the spindle module 101 at A is shown in FIG. In the embodiment of the present application, the first support plate 1016 includes a first hook 101623, and the first hook 101623 is located on the side of the first support plate 1016 away from the first plate surface 10161. The angle between the extension direction of the first hook 101623 and the first plate surface 10161 away from the spindle 1013 is an acute angle. The first support arm 10112 also includes a first slot 101122. Figure 13 In the closed state shown, the first hook 101623 is engaged with the first slot 101122. In this way, when the spindle module 101 is subjected to an external load F, the engagement of the first hook 101623 with the first slot 101122 can prevent the end of the first support plate 1016 close to the spindle 1013 from slipping off the first step surface 101121, thereby improving the reliability of the abutment between the first support plate 1016 and the first support arm 10112, thereby improving the structural reliability of the rotating shaft mechanism 1.

[0104] Since the first support plate 1016 is subjected to a relatively large force when the spindle module 101 is subjected to an external load F, in order to improve the structural reliability of the first support plate 1016, in a possible embodiment of the present application, the strength of the end of the first support plate 1016 close to the spindle 1013 may be relatively large. Figure 12The first support plate 1016 includes a first plate portion 1016a and a second plate portion 1016b, and the first plate portion 1016a and the second plate portion 1016b are fixedly connected, and the connection method may be but is not limited to welding, riveting or threaded connection, etc. In the present application, the strength of the second plate portion 1016b is greater than that of the first plate portion 1016a, and the second plate portion 1016b is arranged closer to the main shaft relative to the first plate portion 1016a, so that the strength of the end of the first support plate 1016 close to the main shaft 1013 is greater, which can reduce the risk of damage to the first support plate 1016.

[0105] In actual design, the first plate portion 1016a can be made of a light material such as aluminum, while the second plate portion 1016b can be made of a material with a greater structural strength such as stainless steel. In this way, while ensuring the structural reliability of the first support plate 1016, the first support plate 1016 can be prevented from being too heavy as a whole, thereby meeting the design requirement of lightweight shaft mechanism 1.

[0106] It is understandable that, in the present application, the first hook 101623 can be disposed on the second plate portion 1016b. In addition, the first hook 101623 can also be an integrally formed structure with the second plate portion 1016b, and the material of the first hook 101623 and the second plate portion 1016b can be the same, which can improve the structural reliability of the first hook 101623 while improving the integration of the first support plate 1016, which is conducive to simplifying the structure of the spindle module 101.

[0107] You can continue to refer to Figure 12 The second support plate 1017 includes a second hook 10173, which is located on the side of the second support plate 1017 away from the third plate surface 10171, and the angle between the extension direction of the second hook 10173 and the third plate surface 10171 away from the spindle 1013 is an acute angle. The second support arm 10122 also includes a second slot 101222, so the spindle module 101 Figure 12 In the closed state shown, the second hook 10173 is engaged with the second slot 101222. In this way, when the spindle module 101 is subjected to an external load F, the engagement of the second hook 10173 with the second slot 101222 can prevent the end of the second support plate 1017 close to the spindle 1013 from slipping off the second step surface 101221, thereby improving the reliability of the abutment between the second support plate 1017 and the second support arm 10122, thereby improving the structural reliability of the rotating shaft mechanism 1.

[0108] In addition, to improve the structural reliability of the second support plate 1017, the second support plate 1017 can also be arranged with reference to the first support plate 1016. That is to say, the second support plate 1017 includes a third plate portion 1017a and a fourth plate portion 1017b, and the third plate portion 1017a and the fourth plate portion 1017b are fixedly connected, and the connection method can be but is not limited to welding, riveting, or threaded connection, etc. Among them, the strength of the fourth plate portion 1017b is greater than that of the second plate portion 1016b, and the fourth plate portion 1017b is arranged closer to the main shaft relative to the third plate portion 1017a, so that the strength of the end of the second support plate 1017 close to the main shaft 1013 is greater, which can reduce the risk of damage to the second support plate 1017.

[0109] In the present application, the third plate portion 1017a of the second support plate 1017 can be arranged with reference to the first plate portion 1016a of the first support plate 1016, and the fourth plate portion 1017b of the second support plate 1017 can be arranged with reference to the second plate portion 1016b of the first support plate 1016, and details thereof will not be described herein.

[0110] In addition, the second hook 10173 can be arranged on the fourth plate portion 1017b, and the second hook 10173 and the fourth plate portion 1017b can be an integrally formed structure. Then, the materials of the second hook 10173 and the fourth plate portion 1017b can be the same, which can improve the structural reliability of the second hook 10173 while improving the integration degree of the second support plate 1017, which is beneficial to simplifying the structure of the main shaft module 101.

[0111] In some possible embodiments of the present application, the first support plate 1016 can also be an integral structure, and each part thereof is made of a material with greater structural strength, so that the first support plate 1016 has higher structural reliability. Similarly, the second support plate 1017 can also be an integral structure, and each part thereof is made of a material with greater structural strength, so that the second support plate 1017 has higher structural reliability.

[0112] Refer to Figure 15 , Figure 15 FIG. is a schematic structural diagram of the main shaft module 101 provided by the embodiment of the present application in an intermediate state. Figure 15 It can be understood that the main shaft module 101 changes from Figure 8 the closed state shown to Figure 4An intermediate state during the flattened state shown. It can be understood that in the spindle module 101 provided in the present application, during the process of the first housing fixing bracket 1014 driving the first support arm 10112 and the first support plate 1016 to rotate, the end of the first support plate 1016 close to the spindle 1013 will not interfere with the first step surface 101121 of the first support arm 10112. Similarly, during the process of the second housing fixing bracket 1015 driving the second support arm 10122 and the second support plate 1017 to rotate, the end of the second support plate 1017 close to the spindle 1013 will not interfere with the second step surface 101221 of the second support arm 10122. Such a design can effectively improve the motion reliability of the spindle module 101, thereby improving the motion reliability of the rotating shaft mechanism 1.

[0113] In addition, by comparing Figure 12 and Figure 15 it can be seen that during the process of the spindle module 101 changing from the closed state to the flattened state, the first hook 101623 of the first support plate 1016 disengages from the first slot 101122 of the first support arm 10112, and the second hook 10173 of the second support plate 1017 disengages from the second slot 101222 of the second support arm 10122. Then in the rotating shaft mechanism 1 provided in the present application, when the spindle module 101 is in the closed state, the reliability of the abutment between the first support plate 1016 and the first support arm 10112 and between the second support plate 1017 and the second support arm 10122 can be improved through the engagement of the first hook 101623 and the first slot 101122 and the engagement of the second hook 10173 and the second slot 101222. And during the process of the first housing fixing bracket 1014 and the second housing fixing bracket 1015 driving the first support plate 1016 and the second support plate 1017 to rotate, since the first hook 101623 is disengaged from the first slot 101122 and the second hook 10173 is disengaged from the second slot 101222, the design of each hook and the corresponding slot will not interfere with the rotation of the first support plate 1016 and the second support plate 1017.

[0114] In the rotating shaft mechanism 1 provided in the present application, by providing a step surface on the support arm slidably connected to the housing fixing bracket, and when the electronic device is in the closed state, at least part of the end of the support plate rotatably connected to the housing fixing bracket close to the spindle 1013 can be disposed opposite to the corresponding step surface. In this way, when the rotating shaft mechanism 1 is impacted by an external load, through the abutment of at least part of the end of the support plate close to the spindle 1013 and the corresponding step surface, the internal force conduction path of the spindle module 101 can be effectively improved, thereby reducing the misalignment amount between the support arm and the corresponding housing fixing bracket to improve the structural reliability of the rotating shaft mechanism 1.

[0115] In addition, adopting the design method of the main shaft module 101 of the rotating shaft mechanism 1 provided by the present application will not affect the structural strength of each component in the main shaft module 101, thereby ensuring the overall structural strength of the rotating shaft mechanism 1.

[0116] When the rotating shaft mechanism 1 provided by the present application is applied to an electronic device, when the electronic device is in a closed state, the bendable part of the flexible display screen 4 is accommodated in the screen accommodating space 7 formed by the first support plate 1016, the second support plate 1017 and the main shaft 1013. Since the deformation amount of the main shaft module 101 of the rotating shaft mechanism 1 under the impact of an external load is small, the risk that the internal parts of the rotating shaft mechanism 1 collide with the bendable part of the flexible display screen 4 is small, and it can effectively reduce the risk that the flexible display screen 4 is damaged due to extrusion, thereby being beneficial to improving the structural reliability of the electronic device.

[0117] It should be understood that the specific setting method of the rotating shaft mechanism 1 provided by the embodiments of the present application is not limited to this. Based on the introduction of the design principle of the rotating shaft mechanism 1 above, the specific structure of the rotating shaft mechanism 1 can be adaptively adjusted according to the specific application scenario, and it will not be introduced one by one here, but it should all be understood to fall within the protection scope of the present application.

[0118] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered by the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A rotating shaft mechanism for a foldable electronic device, at least part of the rotating shaft mechanism is correspondingly arranged with a bendable part of a flexible display screen of the electronic device, and is characterized in that, The shaft mechanism comprises a spindle module, a first support plate and a second support plate, the spindle module comprises a first rotating assembly, a second rotating assembly, a first housing fixing frame, a second housing fixing frame and a spindle, the first rotating assembly and the second rotating assembly are located on opposite sides of the spindle, wherein: The first rotating assembly includes a first supporting arm, the first supporting arm is rotatably connected to the main shaft, the first supporting arm is slidably connected to the first housing fixing frame, and the first supporting arm includes a first step surface; The second rotating assembly includes a second supporting arm, the second supporting arm is rotatably connected to the main shaft, the second supporting arm is slidably connected to the second housing fixing frame, and the second supporting arm includes a second step surface; The first support plate is rotatably connected to the first housing fixing frame, the first support plate comprises a first plate surface, and the first plate surface is used to be connected to the flexible display screen; The second support plate is rotatably connected to the second housing fixing frame, and the second support plate includes a third plate surface, and the third plate surface is used to be connected to the flexible display screen; When the rotating shaft mechanism is in a closed state, a screen space is formed between the first plate surface of the first support plate, the third plate surface of the second support plate, and the surfaces of the main shaft facing the first support plate and the second support plate; at least a portion of the end of the first support plate close to the main shaft is arranged opposite to the first step surface, and at least a portion of the end of the second support plate close to the main shaft is arranged opposite to the second step surface.

2. The shaft mechanism according to claim 1, wherein The main shaft comprises a main inner shaft and a main outer shaft, and the main inner shaft and the main outer shaft are arranged in a buckled manner; When the rotating shaft mechanism is in a closed state, a projection of an end portion of the first support plate close to the main shaft in a direction from the main inner shaft to the main outer shaft at least partially overlaps with a projection of the first step surface in a direction from the main inner shaft to the main outer shaft; A projection of an end portion of the second support plate close to the main axis in a direction from the main inner axis to the main outer axis at least partially overlaps with a projection of the second step surface in a direction from the main inner axis to the main outer axis.

3. The rotating shaft mechanism according to claim 1 or 2, characterized in that The first support plate includes a first hook, which is located on a side of the first support plate away from the first plate surface, and an angle between the extension direction of the first hook and the first plate surface away from the main axis is an acute angle; the first support arm also includes a first slot, and when the rotating shaft mechanism is in a closed state, the first hook is engaged with the first slot; The second support plate includes a second hook, which is located on the side of the second support plate away from the third plate surface, and the angle between the extension direction of the second hook and the third plate surface away from the main axis is an acute angle; the second support arm also includes a second slot, and when the rotating shaft mechanism is in a closed state, the second hook is engaged with the second slot.

4. The rotating shaft mechanism according to claim 3, characterized in that, The first support plate includes a first plate portion and a second plate portion. The first plate portion is fixedly connected to the second plate portion. The strength of the second plate portion is greater than that of the first plate portion. The second plate portion is disposed closer to the main shaft than the first plate portion. The second support plate includes a third plate portion and a fourth plate portion. The third plate portion is fixedly connected to the fourth plate portion. The strength of the fourth plate portion is greater than that of the third plate portion. The fourth plate portion is disposed closer to the main shaft than the third plate portion.

5. The rotating shaft mechanism according to claim 4, characterized in that, The material of the first plate portion is aluminum, and the material of the second plate portion is stainless steel. The first plate portion is welded to the second plate portion. The material of the third plate portion is aluminum, and the material of the fourth plate portion is stainless steel. The third plate portion is welded to the fourth plate portion.

6. The rotating shaft mechanism according to claim 4 or 5, characterized in that, The first hook and the second plate portion are of an integrally formed structure. The second hook and the fourth plate portion are of an integrally formed structure.

7. The rotating shaft mechanism according to any one of claims 1 to 6, characterized in that, The first housing fixing frame includes a first sliding groove, and the first support arm is slidably installed in the first sliding groove. The second housing fixing frame includes a second sliding groove, and the second support arm is slidably installed in the second sliding groove.

8. The rotating shaft mechanism according to any one of claims 1 to 7, characterized in that, The first rotating assembly further includes a first swing arm. The first swing arm is rotatably connected to the main shaft and is also rotatably connected to the first housing fixing frame. The axes of rotation of the first swing arm and the first support arm around the main shaft are parallel but non-coincident. The second rotating assembly further includes a second swing arm. The second swing arm is rotatably connected to the main shaft and is also rotatably connected to the second housing fixing frame. The axes of rotation of the second swing arm and the second support arm around the main shaft are parallel but non-coincident.

9. The rotating shaft mechanism according to claim 8, wherein The main shaft is provided with a first arc-shaped groove and a second arc-shaped groove. The first swing arm includes a first arc-shaped rotating block. The first 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 swing arm includes a second arc-shaped rotating block. The second 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.

10. The shaft mechanism according to claim 8 or 9, characterized in that, The first support plate further includes a second plate surface, which is disposed opposite to the first plate surface. The second plate surface is provided with a first rotating portion. The first housing fixing frame is provided with a first rotating groove. The first rotating portion is installed in the first rotating groove and can slide along the groove surface of the first rotating groove. The second support plate further includes a fourth plate surface, which is disposed opposite to the third plate surface. The fourth plate surface is provided with a second rotating portion. The second housing fixing frame is provided with a second rotating groove. The second rotating portion is installed in the second rotating groove and can slide along the groove surface of the second rotating groove.

11. The shaft mechanism according to claim 10, characterized in that, The second plate surface of the first support plate is further provided with a first guiding portion. The first guiding portion includes a first track groove. At least one of the first support arm and the first swing arm is provided with a first guiding structure. The first guiding structure is inserted into the first track groove and can slide along the first track groove. The fourth plate surface of the second support plate is further provided with a second guiding portion, and the second guiding portion includes a second track groove; at least one of the second support arm and the second swing arm is provided with a second guiding structure, and the second guiding structure is inserted into the second track groove and can slide along the second track groove.

12. 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 11, 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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