A rotating shaft mechanism and electronic device

Abstract

The application discloses a rotating shaft mechanism and an electronic device, which are used for reducing the size of the rotating shaft mechanism and improving the reliability of a flexible display screen of the electronic device. The rotating shaft mechanism comprises a main shaft, a first rotating component, a second rotating component, a first shell fixing frame and a second shell fixing frame. The first rotating component comprises a first gear shaft, a first gear connecting rod, a first rotating piece and a first pull rod. The first gear shaft comprises a first rotating shaft and a first gear. The first rotating shaft is rotationally arranged on the main shaft. The first gear connecting rod comprises a first connecting rod and a second gear. The first connecting rod is slidably connected with the first shell fixing frame. The second gear is engaged with the first gear. The first rotating piece is fixedly connected with the first rotating shaft. The first pull rod is rotationally connected with the first rotating piece and the first shell fixing frame. During the unfolding or closing of the electronic device, the first rotating piece rotates with the first rotating shaft, and the first pull rod is driven to move towards the side close to or away from the second shell fixing frame.

Description

Technical Field

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

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

[0003] As a key component for enabling the folding function of foldable electronic devices, the hinge mechanism can flatten or bend the flexible display screen of the electronic device during unfolding and closing, and prevent the flexible display screen from being stretched or squeezed during the unfolding and closing process. However, the hinge mechanisms currently used in electronic devices are often relatively large in size while achieving the above functions, making it difficult to meet the miniaturization and thinning design requirements of electronic devices. Summary of the Invention

[0004] This application provides a pivot mechanism and an electronic device to reduce the size of the pivot mechanism of the electronic device and improve the reliability of the flexible display screen of the electronic device.

[0005] In a first aspect, this application provides a hinge mechanism for a foldable electronic device. The hinge mechanism may include a main shaft, a first rotating assembly, a second rotating assembly, a first housing mounting bracket, and a second housing mounting bracket. The first housing mounting bracket and the second housing mounting bracket are respectively disposed on opposite sides of the main shaft. The first rotating assembly may include a first gear shaft, a first gear connecting rod, a first rotating component, and a first pull rod. The first gear shaft includes a first rotating shaft and a first gear, the first rotating shaft being rotatably disposed on the main shaft and extending axially along the hinge mechanism. The first gear connecting rod includes a first connecting rod and a second gear, the first connecting rod being slidably connected to the first housing mounting bracket, and the second gear meshing with the first gear. The first rotating component is fixedly connected to the first rotating shaft. The first pull rod is rotatably connected to the first rotating component, and the axis of rotatable connection between the first pull rod and the first rotating component is parallel to but not coincident with the axis of rotation of the first rotating shaft relative to the main shaft. The rod can also be rotatably connected to the first housing fixing frame; the second rotating assembly may include a second gear shaft, a second gear connecting rod, a second rotating member and a second pull rod, the second gear shaft includes a second rotating shaft and a third gear, the second rotating shaft is rotatably disposed on the main shaft and extends along the axial direction of the rotating shaft mechanism; the second gear connecting rod includes a second connecting rod and a fourth gear, the second connecting rod is slidably connected to the second housing fixing frame, and the fourth gear meshes with the third gear; the second rotating member is fixedly connected to the second rotating shaft; the second pull rod is rotatably connected to the second rotating member, and the axis of rotatable connection between the second pull rod and the second rotating member is parallel to and does not coincide with the axis of rotation of the second rotating shaft relative to the main shaft, and the second pull rod can also be rotatably connected to the second housing fixing frame.

[0006] In this application, during the closing process of the electronic device, the first housing fixing frame and the second housing fixing frame rotate towards each other. The first housing fixing frame drives the first gear connecting rod to rotate synchronously. The first gear connecting rod drives the first gear shaft to rotate through gear meshing. The rotation of the first gear shaft can drive the first rotating component to rotate. During the rotation of the first rotating component, the end of the first pull rod near the main shaft moves towards the side near the second housing fixing frame. Then, the first pull rod drives the first housing fixing frame to move synchronously towards the main shaft during the rotation. The second housing fixing frame drives the second gear connecting rod to rotate synchronously. The second gear connecting rod drives the second gear shaft to rotate through gear meshing. The rotation of the second gear shaft can drive the second rotating component to rotate. During the rotation of the second rotating component, the end of the second pull rod near the main shaft moves towards the side near the first housing fixing frame. Then, the second pull rod drives the second housing fixing frame to move synchronously towards the main shaft during the rotation. During the unfolding of the electronic device, the first housing mounting bracket and the second housing mounting bracket rotate in opposite directions. The first housing mounting bracket drives the first gear connecting rod to rotate synchronously. The first gear connecting rod drives the first gear shaft to rotate through gear meshing. The rotation of the first gear shaft can drive the first rotating component to rotate. During the rotation of the first rotating component, the end of the first pull rod near the main shaft moves away from the second housing mounting bracket. Then, the first pull rod drives the first housing mounting bracket to move synchronously away from the main shaft during the rotation. The second housing mounting bracket drives the second gear connecting rod to rotate synchronously. The second gear connecting rod drives the second gear shaft to rotate through gear meshing. The rotation of the second gear shaft can drive the second rotating component to rotate. During the rotation of the second rotating component, the end of the second pull rod near the main shaft moves away from the first housing mounting bracket. Then, the second pull rod drives the second housing mounting bracket to move synchronously away from the main shaft during the rotation.

[0007] The rotating shaft mechanism of this application can achieve the linkage of each component of the first rotating assembly using a relatively small first rotating component, and can achieve the linkage of each component of the second rotating assembly using a relatively small second rotating component. This allows the main shaft to meet the movement requirements of the first and second rotating components with a smaller width, thus helping to reduce the size of the rotating shaft mechanism. In addition, due to the reduction in the width of the main shaft, the bending area of ​​the flexible display screen is also reduced accordingly, which helps to reduce the difficulty of managing the constant length of the outer tangent of the rotating shaft mechanism, thereby reducing the risk of the flexible display screen being stretched or arched, and improving the reliability of the flexible display screen.

[0008] In some implementations, the first gear and the first shaft can be integrally formed, or they can be formed separately and then fixedly connected by keying, interference fit, or welding. Similarly, the second gear and the second connecting rod can be integrally formed, or they can be formed separately and then fixedly connected by welding, bonding, or other methods.

[0009] In some implementations, the third gear and the second shaft can be integrally formed, or they can be formed separately and then fixedly connected by keying, interference fit, or welding. Similarly, the fourth gear and the second connecting rod can be integrally formed, or they can be formed separately and then fixedly connected by welding, bonding, or other methods.

[0010] In some implementations, the first gear and the third gear can mesh with each other, so that during the unfolding and closing of the electronic device, the first gear shaft and the second gear shaft can rotate in opposite directions at the same speed. Through the transmission action of the first rotating component and the second rotating component, the first housing fixing frame and the second housing fixing frame can also rotate synchronously in opposite directions at the same speed, thereby realizing the synchronization function of the rotating shaft mechanism.

[0011] In addition, in this application, the first rotating component and the second rotating component can not only enable the rotating shaft mechanism to realize the opening and closing function of the electronic device, but also realize the synchronization function by utilizing the existing components of the rotating component. Therefore, the structural composition of the rotating shaft mechanism can be effectively simplified, and the cost and processing difficulty of the rotating shaft mechanism can be reduced.

[0012] In some implementations, the second gear can be rotatably connected to the main shaft via the first hinge shaft, thereby improving the smoothness of the movement of the first gear connecting rod; similarly, the fourth gear can be rotatably connected to the main shaft via the second hinge shaft, thereby improving the smoothness of the movement of the second gear connecting rod. The first and second hinge shafts extend axially along the rotating shaft mechanism.

[0013] In some embodiments, the first housing bracket may be provided with a first sliding groove extending from the side near the main shaft to the side away from the main shaft, and a first connecting rod may be slidably disposed in the first sliding groove to achieve a sliding connection between the first connecting rod and the first housing bracket. Similarly, the second housing bracket may be provided with a second sliding groove extending from the side near the main shaft to the side away from the main shaft, and a second connecting rod may be slidably disposed in the second sliding groove to achieve a sliding connection between the second connecting rod and the second housing bracket.

[0014] In some embodiments, the first rotating member can have a strip-shaped cross-section perpendicular to the axial direction of the rotating shaft mechanism. Along the extension direction of this strip, the first rotating member includes a first end and a second end. The first end of the first rotating member can be fixedly connected to the first rotating shaft, and the second end of the first rotating member can be rotatably connected to the first tie rod via a third hinge shaft. This allows the first gear shaft and the first tie rod to be linked through the first rotating member. The third hinge shaft extends along the axial direction of the rotating shaft mechanism. Similarly, the second rotating member can also have a strip-shaped cross-section perpendicular to the axial direction of the rotating shaft mechanism. Along the extension direction of this strip, the second rotating member includes a first end and a second end. The first end of the second rotating member can be fixedly connected to the second rotating shaft, and the second end of the second rotating member can be rotatably connected to the second tie rod via a fourth hinge shaft. This allows the second gear shaft and the second tie rod to be linked through the second rotating member. The fourth hinge shaft extends along the axial direction of the rotating shaft mechanism.

[0015] In some embodiments, the second end of the first rotating member may have a first notch that divides the second end of the first rotating member into a first portion and a second portion spaced apart along the axial direction of the rotating shaft mechanism. The end of the first pull rod near the main shaft is located within the first notch, and the first pull rod can be rotatably connected to the first portion and the second portion respectively via a third hinge shaft, thereby improving the reliability of the relative movement between the first pull rod and the first rotating member. The second end of the second rotating member may have a second notch that divides the second end of the second rotating member into a third portion and a fourth portion spaced apart along the axial direction of the rotating shaft mechanism. The end of the second pull rod near the main shaft is located within the second notch, and the second pull rod can be rotatably connected to the third portion and the fourth portion respectively via a fourth hinge shaft, thereby improving the reliability of the relative movement between the second pull rod and the second rotating member.

[0016] In some embodiments, the spindle may include a base, the first surface of which has a first receiving groove and a second receiving groove, the first receiving groove and the second receiving groove being arranged side by side along the transverse direction of the spindle. A first gear shaft is rotatably disposed in the first receiving groove, and a second gear shaft is rotatably disposed in the second receiving groove, thereby improving the ease of installation of the first gear shaft and the second gear shaft on the spindle.

[0017] In some embodiments, the spindle may further include a cover plate that can cover the first surface of the base, and the side of the cover plate facing the base may be provided with a third receiving groove and a fourth receiving groove. The second gear of the first gear connecting rod is rotatably disposed in the third receiving groove, and the fourth gear of the second gear connecting rod is rotatably disposed in the fourth receiving groove, thereby providing mounting space for the second gear and the fourth gear on the spindle.

[0018] In some embodiments, a first boss with a first rotating groove may be provided on one side of the first receiving groove along the axial direction of the rotating shaft mechanism; the third receiving groove may have a third boss opposite to the first boss, with a third rotating groove; the end of the first rotating shaft may be rotatably disposed within a hinge hole formed by the first and third rotating grooves, thereby allowing the first rotating shaft to be rotatably mounted on the main shaft and reducing the difficulty of installing the first rotating shaft within the main shaft. Similarly, a second boss with a second rotating groove may be provided on one side of the second receiving groove along the axial direction of the rotating shaft mechanism; the fourth receiving groove may have a fourth boss opposite to the second boss, with a fourth rotating groove; the end of the second rotating shaft may be rotatably disposed within a hinge hole formed by the second and fourth rotating grooves, thereby allowing the second rotating shaft to be rotatably mounted on the main shaft and reducing the difficulty of installing the second rotating shaft within the main shaft.

[0019] In some implementations, the bottom of the first receiving groove may be provided with a first sinking groove, and the bottom of the third receiving groove may be provided with a third sinking groove at the position corresponding to the first sinking groove. During the unfolding and closing of the electronic device, the two ends of the first rotating member may swing in the first sinking groove and the third sinking groove respectively, so as to reduce the risk of interference between the first rotating member and the main shaft and improve the motion reliability of the first rotating assembly.

[0020] For example, the cross-section of the first rotating member perpendicular to the axis of the rotating shaft mechanism can be an elongated oval, and the two ends of the first rotating member are arc surfaces. In this case, the groove surface of the first sinking groove and the groove surface of the third sinking groove can be arc surfaces. This design can not only allow the base and the cover plate to effectively avoid the first rotating member, but also appropriately reduce the slotting space of the base and the cover plate, thereby helping to improve the structural strength of the main shaft.

[0021] Similarly, the bottom of the second receiving groove can be provided with a second sinking groove, and the bottom of the fourth receiving groove can be provided with a fourth sinking groove at the position corresponding to the second sinking groove. During the unfolding and closing of the electronic device, the two ends of the second rotating member can swing in the second sinking groove and the fourth sinking groove respectively, so as to reduce the risk of interference between the second rotating member and the main shaft and improve the motion reliability of the second rotating assembly.

[0022] For example, the cross-section of the second rotating member perpendicular to the axis of the rotating shaft mechanism can be an elongated oval, and the two ends of the second rotating member are arc surfaces. In this case, the groove surface of the second sinking groove and the groove surface of the fourth sinking groove can be arc surfaces. This design can not only allow the base and the cover plate to effectively avoid the second rotating member, but also appropriately reduce the slotting space of the base and the cover plate, thereby helping to improve the structural strength of the main shaft.

[0023] In some implementations, the first and second rotating components can be staggered along the axial direction of the rotating shaft mechanism. This helps to reduce the width of the main shaft and also allows the locations of the recessed grooves on the base and cover plate to be relatively dispersed, avoiding excessive concentration of structural weak points in the base and cover plate, thereby helping to improve the structural strength of the rotating shaft mechanism.

[0024] In some embodiments, the rotating shaft mechanism may further include a first damping module and a second damping module. The first damping module may include a first damping element, a second damping element, a first elastic element, and a first limiting element sequentially sleeved on the first rotating shaft. The first damping element is fixedly connected to the first rotating shaft, the second damping element is rotatably connected to the first rotating shaft and relatively fixed to the main shaft, the first limiting element is fixedly connected to the first rotating shaft, and the first elastic element is positioned between the second damping element and the first limiting element. Under the elastic force of the first elastic element, the second damping element abuts against the first damping element, and the second damping element can apply a damping force to the first damping element, that is, apply a damping force to the first rotating assembly, thereby improving the rotational smoothness of the first rotating assembly. Similarly, the second damping assembly may include a third damping element, a fourth damping element, a second elastic element, and a second limiting element sequentially sleeved on the first rotating shaft. The third damping element is fixedly connected to the second rotating shaft, the fourth damping element is rotatably connected to the second rotating shaft, and the fourth damping element is relatively fixed to the main shaft. The second limiting element is fixedly connected to the second rotating shaft, and the second elastic element is positioned between the fourth damping element and the second limiting element. Under the elastic force of the second elastic element, the fourth damping element and the third damping element abut against each other, and the fourth damping element can apply a damping force to the third damping element, that is, apply a damping force to the second rotating assembly, thereby improving the rotational smoothness of the second rotating assembly.

[0025] In one embodiment, the first damping element and the second damping element can each be a cam, with the first damping element having a first cam surface on the side facing the second damping element, and the second damping element having a second cam surface on the side facing the first damping element. By rationally designing the surface shapes of the first and second cam surfaces, the first and second damping elements can generate the required damping force during relative motion. Similarly, the third and fourth damping elements can also each be cams, with the third damping element having a third cam surface on the side facing the fourth damping element, and the fourth damping element having a fourth cam surface on the side facing the third damping element. By rationally designing the surface shapes of the third and fourth cam surfaces, the third and fourth damping elements can generate the required damping force during relative motion.

[0026] In another embodiment, the first and second damping elements can each be friction plates, and the two generate damping force through mutual friction during the rotation of the first damping element relative to the second damping element. Similarly, the third and fourth damping elements can also each be friction plates, and the two generate damping force through mutual friction during the rotation of the third damping element relative to the fourth damping element.

[0027] Secondly, this application also provides an electronic device comprising a first housing, a second housing, a flexible display screen, and a rotating mechanism as described in the first aspect. The first and second housings are respectively disposed on opposite sides of the rotating mechanism. A first housing fixing frame is fixedly connected to the first housing, and a second housing fixing frame is fixedly connected to the second housing. The flexible display screen continuously covers the first housing, the second housing, and the rotating mechanism, and is fixedly connected to both the first and second housings. When the electronic device is in its unfolded state, the rotating mechanism, the first housing, and the second housing together provide flat support for the flexible display screen, thereby ensuring the integrity of the electronic device's shape in this unfolded state. During the process of the electronic device moving from the unfolded state to the closed state, the two housings rotate towards each other, causing the flexible display screen to rotate, effectively preventing deformation of the flexible display screen and reducing the risk of damage to the flexible display screen. Attached Figure Description

[0028] Figure 1 A schematic diagram of the structure of the electronic device provided in the embodiment of this application when it is in a closed state;

[0029] Figure 2 A partial exploded view of the electronic device provided in the embodiments of this application in its unfolded state;

[0030] Figure 3 This is a schematic diagram of the rotating shaft mechanism provided in the embodiments of this application;

[0031] Figure 4 A partial structural schematic diagram of the rotating shaft mechanism provided in the embodiments of this application;

[0032] Figure 5 for Figure 4 An exploded view of the rotating shaft mechanism shown;

[0033] Figure 6 This is a schematic diagram of the structure of the base provided in the embodiments of this application;

[0034] Figure 7 This is a schematic diagram of the structure of the cover plate provided in an embodiment of this application;

[0035] Figure 8 This is a schematic diagram of the structure of the first gear shaft provided in an embodiment of this application;

[0036] Figure 9 This is a schematic diagram of the structure of the first gear connecting rod provided in an embodiment of this application;

[0037] Figure 10 This is a schematic diagram of the structure of the first tie rod provided in an embodiment of this application;

[0038] Figure 11A schematic cross-sectional view of the rotating shaft mechanism provided in the embodiment of this application in the unfolded state of the electronic device;

[0039] Figure 12 A schematic cross-sectional view of the rotating shaft mechanism provided in the embodiment of this application in the closed state of the electronic device;

[0040] Figure 13 A schematic cross-sectional view of the rotating shaft mechanism provided in the embodiment of this application in the unfolded state of the electronic device;

[0041] Figure 14 A schematic cross-sectional view of the rotating shaft mechanism provided in the embodiment of this application in the closed state of the electronic device;

[0042] Figure 15 A schematic cross-sectional view of the rotating shaft mechanism provided in the embodiment of this application in the unfolded state of the electronic device;

[0043] Figure 16 A schematic cross-sectional view of the rotating shaft mechanism provided in the embodiment of this application in the closed state of the electronic device;

[0044] Figure 17 A partial structural schematic diagram of the rotating shaft mechanism provided in the embodiments of this application;

[0045] Figure 18 This is a partial structural exploded view of the rotating shaft mechanism provided in an embodiment of this application.

[0046] Figure label:

[0047] 1-Rotating shaft mechanism; 1a-Support surface of the rotating shaft mechanism; 11-Rotating module;

[0048] 111-First rotating module; 1111-First gear shaft; 11111-First rotating shaft; 11112-First gear;

[0049] 1112 - First gear connecting rod; 11121 - First connecting rod; 111211 - First slider; 11122 - Second gear; 11123 - First hinge shaft;

[0050] 1113 - First rotating component; 1113a - First end of the first rotating component; 1113b - Second end of the first rotating component;

[0051] 11131 - First gap; 11132 - First part; 11133 - Second part;

[0052] 1114 - First tie rod; 11141 - Third hinge shaft; 11142 - Fifth hinge shaft;

[0053] 112 - Second rotating module; 1121 - Second gear shaft; 11211 - Second rotating shaft; 11212 - Third gear;

[0054] 1122 - Second gear connecting rod; 11221 - Second connecting rod; 112211 - Second slider; 11222 - Fourth gear; 11223 - Second hinge shaft;

[0055] 1123 - Second rotating member; 1123a - First end of the second rotating member; 1123b - Second end of the second rotating member;

[0056] 11231 - Second gap; 11232 - Third section; 11233 - Fourth section;

[0057] 1124 - Second tie rod; 11241 - Fourth hinge shaft; 11242 - Sixth hinge shaft;

[0058] 113-First housing fixing bracket; 1131-First slide groove; 11311-First slide rail; 1132-First slot;

[0059] 114-Second housing fixing bracket; 1141-Second slide groove; 11411-Second slide rail; 1142-Second slot;

[0060] 12-Main spindle; 121-Base; 121a-First surface of base; 1211-First receiving groove; 12111-First clearance groove;

[0061] 12112 - First boss; 121121 - First rotating groove; 12113 - First sinking groove; 1212 - Second receiving groove;

[0062] 12121 - Second clearance groove; 12122 - Second boss; 121221 - Second rotation groove; 12123 - Second sinking groove;

[0063] 122-Cover plate; 1221-Third receiving groove; 12211-Third clearance groove; 12212-Third boss; 122121-Third rotating groove;

[0064] 12213 - First baffle wall; 12214 - Second baffle wall; 12215 - Third sinking trough; 1222 - Fourth receiving trough;

[0065] 12221 - Fourth clearance groove; 12222 - Fourth boss; 122221 - Fourth rotation groove; 12223 - Third baffle;

[0066] 12224 - Fourth baffle wall; 12225 - Fourth sinkhole;

[0067] 13-Damping module; 131-First damping assembly; 1311-First cam; 1312-Second cam; 1313-First elastic element;

[0068] 1314 - First limiting component; 132 - Second damping assembly; 1321 - Third cam; 1322 - Fourth cam;

[0069] 1323 - Second elastic element; 1324 - Second limiting element;

[0070] 2-First housing; 2a-Supporting surface of the first housing;

[0071] 3-Second shell; 3a-Supporting surface of the third shell;

[0072] 4- Flexible display screen. Detailed Implementation

[0073] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein. The same reference numerals in the figures denote the same or similar structures, and therefore repeated descriptions of them will be omitted. The terms expressing position and direction described in the embodiments of this application are illustrative based on the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this application. The accompanying drawings of the embodiments of this application are only for illustrating relative positional relationships and do not represent actual scale.

[0074] It should be noted that specific details are set forth in the following description to facilitate understanding of this application. However, the embodiments of this 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 spirit of the embodiments of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0075] refer to Figure 1 As shown, Figure 1 This is a partially exploded view of the electronic device provided in this application embodiment in a closed state. The electronic device provided in this application embodiment can be a mobile phone, a personal digital assistant (PDA), a laptop computer, a tablet computer, or other devices with foldable functionality. Figure 1 The electronic device illustrated in this embodiment is a mobile phone. The electronic device may include a hinge mechanism 1, a flexible display screen 4, and two housings. For ease of description, the two housings may be named first housing 2 and second housing 3, respectively. First housing 2 and second housing 3 are located on opposite sides of the hinge mechanism 1 and can rotate around the hinge mechanism 1. During use, this electronic device can be closed and opened according to different usage scenarios.

[0076] According to the embodiments of this application, the electronic device can be an outward-folding electronic device. In the outward-folding electronic device, the flexible display screen 4 is always located on the outside of the electronic device, whether in the closed state or during the switching between the closed and unfolded states. Figure 1 This demonstrates the relative positional relationship between the rotating shaft mechanism 1 and the two housings when the electronic device is in a closed state.

[0077] Figure 2 A partial exploded view of the electronic device provided in the embodiments of this application in its unfolded state. See also... Figure 1 and Figure 2 The rotating shaft mechanism 1, the first housing 2, and the second housing 3 each have a support surface facing the flexible display screen 4. The flexible display screen 4 can continuously cover the bearing surface 1a of the rotating shaft mechanism 1, the support surface 2a of the first housing 2, and the support surface 3a of the second housing 3. The rotating shaft mechanism 1 and the bendable part of the flexible display screen 4 are correspondingly arranged, and the flexible display screen 4 can be fixedly connected to the support surface 2a of the first housing 2 and the support surface 3a of the second housing 3. The connection method can be, but is not limited to, adhesive bonding. When the electronic device is in the unfolded state, the support surface 1a of the rotating shaft mechanism 1, the support surface 2a of the first housing 2, and the support surface 3a of the second housing 3 can be connected to form a flat support surface. In this way, the rotating shaft mechanism 1, the first housing 2, and the second housing 3 can provide flat support for the flexible display screen 4.

[0078] In this embodiment of the application, the first housing 2 and the second housing 3 are composed of Figure 1 The closed state shown Figure 2 During the opposite rotation process of the unfolded state shown, or by Figure 2 The unfolded state shown Figure 1 During the relative rotation in the closed state shown, the flexible display screen 4 can be bent or flattened along with the first housing 2 and the second housing 3. Furthermore, it can be understood that the electronic device is composed of… Figure 2 The unfolded state shown Figure 1 The closed state shown, or by Figure 1 The closed state shown Figure 2 The unfolded state shown is the process of the first housing 2 and the second housing 3 rotating around the pivot mechanism 1. The pivot mechanism 1, as a key functional component in the foldable electronic device, is designed to correspond to the bendable portion of the flexible display screen 4; therefore, it plays a crucial role in... Figure 2 The unfolded state shown and in Figure 1 In the closed state shown, it plays an important role in supporting the foldable part of the flexible display screen 4.

[0079] Figure 3 This is a schematic diagram of the rotating shaft mechanism 1 provided in an embodiment of this application. See also... Figure 2 and Figure 3 As shown, the rotating shaft mechanism 1 may include a rotating module 11 and a main shaft 12, wherein the main shaft 12 extends along the axial direction of the rotating shaft mechanism 1 and serves as a load-bearing component for the rotating module 11. In this embodiment, the axial direction of the rotating shaft mechanism 1 can be understood as the direction of extension of the axis of rotation of the first housing 2 and the second housing 3 about the rotating shaft mechanism 1. The number of rotating modules 11 can be one or more. When the rotating shaft mechanism includes multiple rotating modules 11, the multiple rotating modules 11 can be arranged at intervals along the axial direction of the rotating shaft mechanism, such as... Figure 3 The diagram shows a case where the rotating shaft mechanism 1 includes two rotating modules 11. The first housing 2 and the second housing 3 are rotatably connected by multiple rotating modules 11, which can effectively improve the stability of the rotation of the first housing 2 and the second housing 3 of the electronic device relative to the rotating shaft mechanism 1.

[0080] In one embodiment, when there are multiple rotating modules 11, each of the multiple rotating modules 11 can use a main shaft 12 as a load-bearing component to improve the integration of the rotating shaft mechanism 1. In another embodiment, the rotating shaft mechanism 1 can be provided with a main shaft 12 for each rotating module 11, so that each rotating module 11 uses the corresponding main shaft 12 as a load-bearing component.

[0081] Figure 4 This is a partial structural schematic diagram of the rotating shaft mechanism provided in an embodiment of this application. Figure 5 for Figure 4 An exploded view of the rotating shaft mechanism shown. (Reference) Figure 4 and Figure 5 As shown in this embodiment, the rotating module 11 may include a first rotating component 111 and a second rotating component 112, which are respectively rotatable relative to the main shaft 12. Additionally, the rotating shaft mechanism 1 may also include a first housing fixing frame 113 and a second housing fixing frame 114, which are respectively disposed on opposite sides of the main shaft 12. The first housing fixing frame 113 can be used for fixed connection with a first housing, and the second housing fixing frame 114 can be used for fixed connection with a second housing. Furthermore, the first housing fixing frame 113 can also be drivenly connected to the first rotating component 111, thereby enabling the first housing fixing frame 113 and the first housing to rotate relative to the main shaft; and the second housing fixing frame 114 can also be drivenly connected to the second rotating component, thereby enabling the second housing fixing frame 114 and the second housing to rotate relative to the main shaft 12.

[0082] When the electronic device unfolds or closes, the first housing fixing frame 113 rotates synchronously with the first housing, and the second housing fixing frame 114 rotates synchronously with the second housing. Then, the first housing fixing frame 113 drives the first rotating assembly 111 to rotate around the main shaft 12, and the second housing fixing frame 114 drives the second rotating assembly 112 to rotate around the main shaft 12. Thus, by rationally designing the structure of the first rotating assembly 111 and the second rotating assembly 112, the movement trajectory of the first and second housings can be restricted, allowing the first and second housings to unfold and close the electronic device in a predetermined rotational manner.

[0083] In this embodiment of the application, the first rotating assembly 111 may include a first gear shaft 1111, a first gear connecting rod 1112, a first rotating member 1113, and a first pull rod 1114. The first gear shaft 1111 is rotatably mounted on the main shaft 12, and the rotation axis of the first gear shaft 1111 is arranged along the axial direction of the rotating shaft mechanism 1; the first gear connecting rod 1112 is located on the side of the first gear shaft 1111 facing the first housing fixing frame 113, the first gear connecting rod 1112 is slidably connected to the first housing fixing frame 113, the first gear connecting rod 1112 is rotatably connected to the first gear shaft 1111, and the rotation axis of the first gear connecting rod 1112 is arranged along the axial direction of the rotating shaft mechanism 1; the first rotating member 1113 is fixedly connected to the first gear shaft 1111; the first pull rod 1114 is located on the side of the first rotating member 1113 facing the first housing fixing frame 113, the first pull rod 1114 is rotatably connected to the first rotating member 1113, and the first pull rod 1114 is rotatably connected to the first housing fixing frame 113.

[0084] In this embodiment, the spindle 12 may include a base 121 and a cover plate 122. Figure 6 This is a schematic diagram of the structure of the base 121 provided in an embodiment of this application. Figure 7 This is a schematic diagram of the structure of the cover plate 122 provided in an embodiment of this application. See also... Figures 5 to 7 As shown, the base 121 has a first surface 121a facing the flexible display screen of the electronic device. The first surface 121a of the base 121 has a first receiving groove 1211 and a second receiving groove 1212. The first receiving groove 1211 and the second receiving groove 1212 can be arranged side by side along the width direction of the main shaft 12. The first receiving groove 1211 is located on the side of the base 121 near the first housing fixing frame 113, and the second receiving groove 1212 is located on the side of the base 121 near the second housing fixing frame 114. The first receiving groove 1211 and the second receiving groove 1212 extend along the axial direction of the rotating shaft mechanism 1, respectively. In this embodiment, the width direction of the main shaft 12 can be understood as the arrangement direction of the first housing fixing frame 113 and the second housing fixing frame 114.

[0085] A cover plate 122 can be installed on the first surface 121a of the base 121. Specifically, the cover plate 122 can cover the area of ​​the base 121 where the first receiving groove 1211 and the second receiving groove 1212 are provided, so as to close the first receiving groove 1211 and the second receiving groove 1212. In addition, a third receiving groove 1221 and a fourth receiving groove 1222 can be provided on the side of the cover plate 122 facing the base 121. The third receiving groove 1221 and the fourth receiving groove 1222 can also be arranged side by side along the width direction of the main shaft 12, and the third receiving groove 1221 is located on the side of the cover plate 122 near the first housing fixing frame 113, and the fourth receiving groove 1222 is located on the side of the cover plate near the second housing fixing frame 114. The third receiving groove 1221 is opposite to the first receiving groove 1211, and the fourth receiving groove 1222 is opposite to the second receiving groove 1212.

[0086] In this embodiment, the side of the cover plate 122 facing away from the base 121 can be coplanar with the first surface 121a of the base 121, so that the side of the main shaft 12 facing the flexible display screen is a smooth and flat surface, providing reliable support for the flexible display screen.

[0087] Figure 8 A schematic diagram of the structure of the first gear shaft provided in an embodiment of this application. (Reference) Figure 8 As shown in the embodiment of this application, the first gear shaft 1111 includes a first rotating shaft 11111 and a first gear 11112. The first gear 11112 is sleeved on the first rotating shaft 11111, and the axis of the first gear 11112 coincides with the axis of the first rotating shaft 11111. In one implementation, the first gear 11112 and the first rotating shaft 11111 can be an integrally formed structure, that is, the first gear 11112 is formed by machining gear teeth on the outer peripheral surface of the first rotating shaft 11111. In another implementation, the first gear 11112 can also be fixed to the first rotating shaft 11111 by means of key connection, interference fit, or welding.

[0088] Combination Figures 6 to 8In this embodiment, the first rotating shaft 11111 is rotatably disposed on the main shaft. For example, in a specific implementation, the first rotating shaft 11111 is rotatably disposed within the first receiving groove 1211 of the base. Furthermore, since the diameter of the first gear 11112 is larger than the diameter of the first rotating shaft 11111, to prevent the first gear 11112 from colliding with the bottom of the first receiving groove 1211, a first clearance groove 12111 can be provided at the bottom of the first receiving groove 1211 corresponding to the position of the first gear 11112. This first clearance groove 12111 can be used to avoid collisions with the first gear 11112, thereby improving the motion reliability of the first rotating assembly. Similarly, a third clearance groove 12211 can be provided in the third receiving groove 1221 at a position opposite to the first clearance groove 12111, so as to avoid collisions between the first gear 11112 and the cover plate 122.

[0089] In this embodiment, a first boss 12112 may be provided on one side of the first receiving groove 1211 along the axial direction of the rotating shaft mechanism, and the first boss 12112 may be provided with a first rotating groove 121121. Correspondingly, a third boss 12212 may be provided in the third receiving groove 1221, which is positioned opposite to the first boss 12112, and a third rotating groove 122121 may be provided at the position of the third boss 12212 corresponding to the first rotating groove 121121. The cross-sectional shapes of the first rotating groove 121121 and the third rotating groove 122121 can be arc-shaped, and the radii of both can be approximately equal to the radius of the first rotating shaft 11111. Thus, after the cover plate 122 is placed on the base 121, the first rotating groove 121121 and the third rotating groove 122121 can together form a hinge hole. The end of the first rotating shaft can be rotatably set in the hinge hole formed by the first rotating groove 121121 and the third rotating groove 122121, and then the first rotating shaft 11111 can be rotatably installed on the main shaft.

[0090] In some embodiments, the other side wall of the first receiving groove 1211 along the axial direction of the rotating shaft mechanism may also be provided with a hinge hole, so that the other end of the first rotating shaft 11111 is rotatably disposed in the hinge. Alternatively, the other end of the first rotating shaft 11111 may also abut against the corresponding side wall of the first receiving groove 1211. In this case, the mutual wear between the first rotating shaft 11111 and the base 121 can be reduced by providing a wear-resistant plate on the end face of the first rotating shaft 11111.

[0091] Figure 9 A schematic diagram of the structure of the first gear connecting rod 1112 provided in an embodiment of this application. (See reference) Figure 9As shown, the first gear connecting rod 1112 includes a first connecting rod 11121 and a second gear 11122. The second gear 11122 is disposed at the end of the first connecting rod 11121. The second gear 11122 and the first connecting rod 11121 can be an integral structure, or the second gear 11122 and the first connecting rod 11121 can be formed separately and then fixedly connected by welding, bonding or other methods.

[0092] Combination Figures 6 to 9 As shown, the second gear 11122 is rotatably mounted on the main shaft, and the second gear 11122 meshes with the first gear 11112. For example, the second gear 11122 can be connected via the first hinge shaft 11123 (see reference). Figure 5 It is rotatably disposed in the third receiving groove 1221. It can be understood that when the second gear 11122 is meshed with the first gear 11112, the rotation axis of the second gear 11122 is parallel to the rotation axis of the first gear 11112, that is, the first hinge shaft is parallel to the first rotating shaft 11111, and both are arranged along the axial direction of the rotating shaft mechanism.

[0093] In a specific implementation, a first baffle 12213 and a second baffle 12214 may be provided in the third receiving groove 1221. The first baffle 12213 and the second baffle 12214 are spaced apart along the axial direction of the rotating shaft mechanism, and the distance between them is approximately equal to the length of the second gear 11122. The first baffle 12213 is provided with a hinge hole a, and the second baffle 12214 is provided with a hinge hole b. The second gear 11122 is located between the first baffle 12213 and the second baffle 12214. The first hinge shaft can be sequentially passed through the hinge hole a, the second gear, and the hinge hole b, so that the second gear 11122 is rotatably mounted on the cover plate 122.

[0094] In addition, in this embodiment, when the bottom of the third receiving groove 1221 is provided with a third clearance groove 12211 for avoiding the first gear, the first baffle 12213 and the second baffle 12214 can be respectively provided at both ends of the third clearance groove 12211 along the axial direction of the rotating shaft mechanism. That is, the first baffle 12213 is coplanar with one end of the third clearance groove 12211, and the second baffle 12214 is coplanar with the other end of the third clearance groove 12211.

[0095] refer to Figure 5 and Figure 9As shown in this embodiment, the first housing mounting bracket 113 may be provided with a first sliding groove 1131. The first sliding groove 1131 extends from the side of the first housing mounting bracket 113 near the main shaft 12 toward the side of the first housing mounting bracket 113 away from the main shaft 12. The first connecting rod 11121 is slidably disposed in the first sliding groove 1131, thereby realizing the sliding connection between the first gear connecting rod 1112 and the first housing mounting bracket 113 through the sliding connection between the first connecting rod 11121 and the first housing mounting bracket 113. It can be understood that for an outward-folding electronic device, during the unfolding process of the electronic device, the first connecting rod 11121 can slide relative to the first housing mounting bracket 113 toward the side near the main shaft, while during the closing process of the electronic device, the first connecting rod 11121 can slide relative to the first housing mounting bracket 113 toward the side away from the main shaft.

[0096] For example, if the first slide groove 1131 can be a straight slide groove, then the first connecting rod 11121 can be designed as a straight slider structure. This sliding engagement method can effectively simplify the connection structure between the first connecting rod 11121 and the first housing fixing frame 113, and improve the smoothness of the sliding of the first connecting rod 11121 relative to the first housing fixing frame 113.

[0097] In addition, to prevent the first connecting rod 11121 from slipping out of the first slide groove 1131, the groove wall of the first slide groove 1131 can be provided with a first slide rail 11311. Correspondingly, the end of the first connecting rod 11121 along the axial direction of the rotating shaft mechanism 1 can be provided with a first slider 111211. The first slider 111211 is provided in the first slide rail 11311 and can slide along the first slide rail 11311. In this way, the first slide rail 11311 can be used to limit the first connecting rod 11121 and provide guidance for the sliding of the first connecting rod 11121.

[0098] Please refer to this again. Figure 5 and Figure 8 As mentioned above, the first rotating component 1113 is fixedly connected to the first gear shaft 1111. In a specific implementation, the first rotating component 1113 can be fixed to the first rotating shaft 11111. In this case, the first rotating component 1113 and the first gear 11112 are axially distributed on the first rotating shaft 11111. The cross-section of the first rotating component 1113 perpendicular to the axial direction of the rotating shaft mechanism 1 can be a strip structure, such as including but not limited to oblong, elliptical, and rectangular shapes. The first rotating component 1113 includes a first end 1113a and a second end 1113b. The first end 1113a of the first rotating component 1113 can be fixedly connected to the first rotating shaft 11111, while the second end 1113b of the first rotating component 1113 can be rotatably connected to the first pull rod 1114.

[0099] Similar to the first gear 11112, the first rotating component 1113 and the first rotating shaft 11111 can be integrally formed, or the first rotating component 1113 and the first rotating shaft 11111 can be two independent structures. The first end 1113a of the first rotating component 1113 can be fixedly connected to the first rotating shaft 11111 by means of interference fit, welding or other methods.

[0100] In addition, combined Figures 6 to 8 To reduce the risk of interference between the first rotating member 1113 and the main shaft 12 during rotation with the first rotating shaft 11111, a first sinking groove 12113 can be provided at the bottom of the first receiving groove 1211. A third sinking groove 12215 can be provided at the bottom of the third receiving groove 1221 corresponding to the position of the first sinking groove 12113. The first end 1113a of the first rotating member 1113 is located in the first sinking groove 12113, and the second end 1113b of the first rotating member 1113 is located in the third sinking groove 12215. During the rotation of the first rotating shaft 11111 within the first receiving groove 1211, the first end 1113a of the first rotating member 1113 oscillates within the first sinking groove 12113, and the second end 1113b of the first rotating member 1113 oscillates within the third sinking groove 12215. The surface of the first end 1113a of the first rotating member 1113 and the groove surface of the first sinking groove 12113 can have a certain gap, and the surface of the second end 1113b of the first rotating member 1113 and the groove surface of the third sinking groove 12215 can also have a certain gap, so as to reduce the wear between the first rotating member 1113 and the main shaft 12.

[0101] For example, when the cross-section of the first rotating member 1113 is oblong, the groove surface of the first sinking groove 12113 can be an arc-shaped surface, and the groove surface of the third sinking groove 12215 can also be an arc-shaped surface. In this way, the base 121 and the cover plate 122 can effectively avoid the first rotating member 1113, and the slotting space on the base 121 and the cover plate 122 can be appropriately reduced, thereby helping to improve the structural strength of the main shaft 12.

[0102] Figure 10 A schematic diagram of the structure of the first pull rod 1114 provided in an embodiment of this application. See also... Figure 8 and Figure 10 As shown in this embodiment, the second end 1113b of the first rotating member 1113 is rotatably connected to the first pull rod 1114. The axis connecting the first rotating member 1113 and the first pull rod 1114 is parallel to and does not coincide with the axis of rotation of the first rotating shaft relative to the main shaft. For example, the second end 1113b of the first rotating member 1113 can be rotatably connected to the first pull rod 1114 via a third hinge shaft 11141. In this case, the axis of the third hinge shaft 11141 is the axis connecting the first rotating member 1113 and the first pull rod 1114.

[0103] In one implementation, the second end 1113b of the first rotating member 1113 may have a first notch 11131, which can divide the second end 1113b of the first rotating member 1113 into a first part 11132 and a second part 11133. The first part 11132 and the second part 11133 are distributed along the axial direction of the rotating shaft mechanism, and the first part 11132 and the second part 11133 are respectively provided with hinge holes. The two hinge holes coincide in the projection of the two hinge holes on the axial direction perpendicular to the rotating shaft mechanism. One end of the first pull rod 1114 near the first rotating member 1113 can be located in the first notch 11131, and this end of the first pull rod 1114 is also provided with a hinge hole. The third hinge shaft 11141 can pass through the hinge hole of the first part 11132, the hinge hole of the first pull rod 1114, and the hinge hole of the second part 11133 respectively, so as to rotatably connect the first pull rod 1114 and the first rotating member 1113.

[0104] Please refer to the above. Figure 4 and Figure 9 The first pull rod 1114 and the first housing fixing frame 113 can be rotatably connected via a fifth hinge shaft 11142, which can also be arranged along the axial direction of the rotating shaft mechanism 1. In a specific implementation, the first housing fixing frame 113 can be provided with a first slot 1132 on the side near the main shaft 12, and the slot wall of the first slot 1132 is provided with a hinge hole. One end of the first pull rod 1114 near the first housing fixing frame 113 can be located in the first slot 1132, and this end of the first pull rod 1114 is provided with a hinge hole. The fifth hinge shaft 11142 can pass through the hinge hole of the first slot 1132 and the hinge hole of the first pull rod 1114 respectively, rotatably connecting the first pull rod 1114 and the first housing fixing frame 113.

[0105] Figure 11 This is a cross-sectional schematic diagram of the rotating shaft mechanism 1 provided in the embodiments of this application in the unfolded state of the electronic device. Figure 12 This is a schematic cross-sectional view of the rotating shaft mechanism 1 provided in the embodiments of this application in the closed state of the electronic device. (See also...) Figure 11 and Figure 12Based on the rotating shaft mechanism 1 provided in the above embodiments of this application, during the process of the electronic device changing from an unfolded state to a closed state, the first housing fixing frame 113 rotates counterclockwise around the main shaft 12, and drives the first gear connecting rod 1112 to rotate counterclockwise synchronously. The first gear connecting rod 1112 drives the first gear shaft 1111 to rotate clockwise through the meshing relationship with the first gear shaft 1111. During the rotation of the first gear shaft 1111, it can also drive the first rotating member 1113 to rotate synchronously, so that the second end of the first rotating member 1113 swings toward the side closer to the second housing fixing frame 114, thereby pulling the first pull rod 1114 to move toward the direction closer to the second housing fixing frame 114. Then, the first pull rod 1114 drives the first housing fixing frame 113 to move synchronously toward the direction closer to the main shaft 12 during the counterclockwise rotation. During the process of the electronic device changing from the closed state to the unfolded state, the first housing fixing frame 113 rotates clockwise around the main shaft 12, and drives the first gear connecting rod 1112 to rotate clockwise synchronously. The first gear connecting rod 1112 drives the first gear shaft 1111 to rotate counterclockwise through the meshing relationship with the first gear shaft 1111. During the rotation of the first gear shaft 1111, it can also drive the first rotating component 1113 to rotate synchronously, causing the second end of the first rotating component 1113 to swing away from the second housing fixing frame 114, thereby pushing the first pull rod 1114 to move away from the second housing fixing frame 114. Then, the first pull rod 1114 drives the first housing fixing frame 113 to move synchronously away from the main shaft 12 during the clockwise rotation.

[0106] In electronic devices using the pivot mechanism 1 provided in this application embodiment, the pivot mechanism 1, the first housing, and the second housing can provide three-section support for the flexible display screen, achieving good support for the flexible display screen in both the folded and unfolded states of the electronic device. Furthermore, the pivot mechanism of this application can utilize the relatively small first rotating member 1113 to achieve the linkage of the first gear shaft 1111, the first gear connecting rod 1112, and the first pull rod 1114. The main shaft 12 can therefore meet the movement requirements of the first rotating member 1113 with a smaller width. This correspondingly reduces the bending area of ​​the flexible display screen, helping to reduce the difficulty of maintaining a constant length of the outer tangent of the pivot mechanism 1, thereby reducing the risk of the flexible display screen being pulled or arched.

[0107] In addition, the first gear connecting rod 1112 is rotatably connected to the first gear shaft 1111 located in the main shaft 12 through gear meshing. The rotation axis of the first gear connecting rod 1112 is the axis of the second gear. This design can bring the rotation axis of the first gear connecting rod 1112 closer to the flexible display screen, ensuring the overlap between the first gear connecting rod 1112 and the first housing fixing frame 113. This can reduce the sway angle of the first housing fixing frame 113 relative to the main shaft 12 and improve the motion stability of the rotating shaft mechanism 1.

[0108] Please refer to this again. Figure 5 In this embodiment of the application, the second rotating assembly 112 may include a second gear shaft 1121, a second gear connecting rod 1122, a second rotating member 1123, and a second pull rod 1124. The second gear shaft 1121 is rotatably mounted on the main shaft 12, and the axis of rotation of the second gear shaft 1121 is arranged along the axial direction of the rotating shaft mechanism 1; the second gear connecting rod 1122 is located on the side of the second gear shaft 1121 facing the second housing fixing frame 114, the second gear connecting rod 1122 is slidably connected to the second housing fixing frame 114, the second gear connecting rod 1122 is rotatably connected to the second gear shaft 1121, and the axis of rotation of the second gear connecting rod 1122 is arranged along the axial direction of the rotating shaft mechanism 1; the second rotating member 1123 is fixedly connected to the second gear shaft 1121; the second pull rod 1124 is located on the side of the second rotating member 1123 facing the second housing fixing frame 114, the second pull rod 1124 is rotatably connected to the second rotating member 1123, and the second pull rod 1124 is rotatably connected to the second housing fixing frame 114.

[0109] refer to Figures 6 to 8 As shown in the embodiment of this application, the second gear shaft 1121 includes a second rotating shaft 11211 and a third gear 11212. The third gear 11212 is sleeved on the second rotating shaft 11211, and the axis of the third gear 11212 coincides with the axis of the second rotating shaft 11211. The third gear 11212 and the second rotating shaft 11211 can be an integral structure, or they can be independently machined and then fixedly connected by key connection, interference fit, or welding.

[0110] The second rotating shaft 11211 is rotatably mounted on the main shaft 12. In a specific implementation, the second rotating shaft 11211 is rotatably mounted within the second receiving groove 1212 of the base 121. Furthermore, since the diameter of the third gear 11212 is larger than the diameter of the second rotating shaft 11211, to prevent the third gear 11212 from colliding with the bottom of the second receiving groove 1212, a second clearance groove 12121 can be provided at the position corresponding to the third gear 11212 at the bottom of the second receiving groove 1212. This second clearance groove 12121 is used to avoid collisions with the third gear 11212, thereby improving the reliability of the second rotating assembly's movement. Similarly, a fourth clearance groove 12221 can be provided in the fourth receiving groove 1222 at a position opposite to the second clearance groove 12121, to avoid collisions between the third gear 11212 and the cover plate 122.

[0111] A second boss 12122 may be provided on one side of the second receiving groove 1212 along the axial direction of the rotating shaft mechanism. The second boss 12122 may be provided with a second rotating groove 121221. Correspondingly, a fourth boss 12222 may be provided in the fourth receiving groove 1222, and a fourth rotating groove 122221 may be provided at the position of the fourth boss 12222 corresponding to the position of the second rotating groove 121221. The cross-sections of the second rotating groove 121221 and the fourth rotating groove 122221 may be arc-shaped, and the radii of both may be approximately equal to the radius of the second rotating shaft 11211. After the cover plate 122 is placed on the base 121, the second rotating groove 121221 and the fourth rotating groove 122221 can together form a hinge hole, and the end of the second rotating shaft 11211 can be rotatably set in the hinge hole formed by the second rotating groove 121221 and the fourth rotating groove 122221, and then the second rotating shaft 11211 can be rotatably installed on the main shaft.

[0112] refer to Figure 9 As shown, the second gear connecting rod 1122 includes a second connecting rod 11221 and a fourth gear 11222. The fourth gear 11222 is disposed at the end of the second connecting rod 11221. The fourth gear 11222 and the second connecting rod 11221 can be an integral structure, or the fourth gear 11222 and the second connecting rod 11221 can be formed separately and then fixedly connected by welding, bonding or other methods.

[0113] Combination Figures 6 to 9 As shown, the fourth gear 11222 is rotatably mounted on the main shaft, and the fourth gear 11222 meshes with the third gear 11212. In a specific implementation, the fourth gear 11222 can be connected via the second hinge shaft 11223 (see reference). Figure 5 It is set in the fourth receiving groove 1222 of the cover plate 122. It can be understood that the rotation axis of the fourth gear 11222 is parallel to the rotation axis of the third gear 11212, that is, the second hinge shaft is also set along the axial direction of the rotating shaft mechanism.

[0114] In a specific implementation, a third baffle 12223 and a fourth baffle 12224 may be provided in the fourth receiving groove 1222. The third baffle 12223 and the fourth baffle 12224 are spaced apart along the axial direction of the rotating shaft mechanism, and the distance between them is approximately equal to the length of the fourth gear 11222. The third baffle 12223 is provided with a hinge hole c, and the fourth baffle 12224 is provided with a hinge hole d. The fourth gear 11222 is located between the third baffle 12223 and the fourth baffle 12224. The second hinge shaft can be sequentially passed through the hinge hole c, the fourth gear 11222, and the hinge hole d to rotatably mount the fourth gear 11222 onto the cover plate 122.

[0115] In addition, when the bottom of the fourth receiving groove 1222 is provided with a fourth clearance groove 12221, the third baffle 12223 and the fourth baffle 12224 can be respectively provided at both ends of the fourth clearance groove 12221 along the axial direction of the rotating shaft mechanism. That is, the third baffle 12223 is coplanar with one end of the fourth clearance groove 12221, and the fourth baffle 12224 is coplanar with the other end of the fourth clearance groove 12221.

[0116] Please refer to the above. Figure 5 and Figure 9 In this embodiment, the second housing mounting bracket 114 may be provided with a second sliding groove 1141. This second sliding groove 1141 extends from the side of the second housing mounting bracket 114 near the main shaft 12 towards the side of the second housing mounting bracket 114 away from the main shaft 12. The second connecting rod 11221 is slidably disposed in the second sliding groove 1141, thereby achieving a sliding connection between the second gear connecting rod 1122 and the second housing mounting bracket 114 through the sliding connection between the second connecting rod 11221 and the second housing mounting bracket 114. It is understood that for an outward-folding electronic device, during the unfolding process, the second connecting rod 11221 can slide relative to the second housing mounting bracket 114 towards the side near the main shaft, while during the closing process, the second connecting rod 11221 can slide relative to the second housing mounting bracket 114 towards the side away from the main shaft.

[0117] For example, if the second slide groove 1141 can be a straight slide groove, then the second connecting rod 11221 can be designed as a straight slider structure. This sliding engagement method can effectively simplify the connection structure between the second connecting rod 11221 and the second housing fixing frame 114, and improve the smoothness of the sliding of the second connecting rod 11221 relative to the second housing fixing frame 114.

[0118] In addition, to prevent the second connecting rod 11221 from slipping out of the second slide groove 1141, a second slide rail 11411 can be provided on the groove wall of the second slide groove 1141. Correspondingly, a second slider 112211 can be provided at the end of the second connecting rod 11221 along the axial direction of the rotating shaft mechanism 1. The second slider 112211 is provided in the second slide rail 11411 and can slide along the second slide rail 11411. In this way, the second slide rail 11411 can be used to limit the second connecting rod 11221 and provide guidance for the sliding of the second connecting rod 11221.

[0119] Please refer to this again. Figure 5 and Figure 8When the second rotating member 1123 is fixedly connected to the second gear shaft 1121, the second rotating member 1123 can be specifically fixed to the second rotating shaft 11211. In this case, the second rotating member 1123 and the third gear 11212 are axially distributed on the second rotating shaft 11211. The cross-section of the second rotating member 1123 perpendicular to the axial direction of the rotating shaft mechanism 1 can be a strip structure, such as, but not limited to, oblong, elliptical, or rectangular shapes. The second rotating member 1123 includes a first end 1123a and a second end 1123b. The first end 1123a of the second rotating member 1123 can be fixedly connected to the second rotating shaft 11211, while the second end 1123b of the second rotating member 1123 can be rotatably connected to the second pull rod 1124.

[0120] In addition, the second rotating component 1123 and the second rotating shaft 11211 can be integrally formed, or the second rotating component 1123 and the second rotating shaft 11211 can be two independent structures. The first end 1123a of the second rotating component 1123 can be fixedly connected to the second rotating shaft 11211 by means of interference fit, welding or other methods.

[0121] Combination Figures 6 to 8 The bottom of the second receiving groove 1212 may be provided with a second sinking groove 12123, and the bottom of the fourth receiving groove 1222 may be provided with a fourth sinking groove 12225 corresponding to the position of the second sinking groove 12123. The first end 1123a of the second rotating member 1123 is located in the second sinking groove 12123, and the second end 1123b of the second rotating member 1123 is located in the fourth sinking groove 12225. During the rotation of the second rotating shaft 11211 in the second receiving groove 1212, the first end 1123a of the second rotating member 1123 swings in the second sinking groove 12123, and the second end 1123b of the second rotating member 1123 swings in the fourth sinking groove 12225. Thus, the second sinking groove 12123 and the fourth sinking groove 12225 are used to reduce the risk of interference between the second rotating member 1123 and the main shaft.

[0122] For example, when the cross-section of the second rotating member 1123 is oblong, the groove surface of the second sinking groove 12123 can be an arc-shaped surface, and the groove surface of the fourth sinking groove 12225 can also be an arc-shaped surface. In this way, the base 121 and the cover plate 122 can effectively avoid the second rotating member 1123, and the slotting space on the base 121 and the cover plate 122 can be appropriately reduced, thereby helping to improve the structural strength of the spindle.

[0123] In this embodiment, the second rotating member 1123 and the first rotating member 1113 can be staggered along the axial direction of the rotating shaft mechanism 1. With this design, the motion trajectory of the second rotating member 1123 and the motion trajectory of the first rotating member 1113 can overlap in the projection perpendicular to the axial direction of the rotating shaft mechanism 1. This can reduce the width of the main shaft 12 to a certain extent, and at the same time, make the positions of the recessed grooves of the base 121 and the cover plate 122 relatively dispersed, avoiding the structural weak points of the base 121 and the cover plate 122 from being too concentrated, thereby helping to improve the structural strength of the rotating shaft mechanism 1.

[0124] Please refer to the above. Figure 8 and Figure 10 As shown in this embodiment, the second end 1123b of the second rotating member 1123 is rotatably connected to the second pull rod 1124. The axis connecting the second rotating member 1123 and the second pull rod 1124 is parallel to and does not coincide with the axis of rotation of the second rotating shaft relative to the main shaft. For example, the second end 1123b of the second rotating member 1123 can be rotatably connected to the second pull rod 1124 via a fourth hinge shaft 11241. In this case, the axis of the fourth hinge shaft 11241 is the axis connecting the second rotating member 1123 and the second pull rod 1124.

[0125] It is arranged along the axial direction of the rotating shaft mechanism. In one implementation, the second end 1123b of the second rotating member 1123 may have a second notch 11231, which can divide the second end 1123b of the second rotating member 1123 into a third part 11232 and a fourth part 11233. The third part 11232 and the fourth part 11233 are distributed along the axial direction of the rotating shaft mechanism, and the third part 11232 and the fourth part 11233 are respectively provided with a hinge hole and a hinge hole, and the two hinge holes coincide in the projection of the projection perpendicular to the axial direction of the rotating shaft mechanism. One end of the second pull rod 1124 near the second rotating member 1123 can be located in the second notch 11231, and this end of the second pull rod 1124 is also provided with a hinge hole. The fourth hinge shaft 11241 can pass through the hinge hole of the third part 11232, the hinge hole of the second pull rod 1124, and the hinge hole of the fourth part 11233 respectively, so as to rotatably connect the second pull rod 1124 and the second rotating member 1123.

[0126] Please refer to the above. Figure 5 and Figure 10The second pull rod 1124 and the second housing fixing frame 114 can be rotatably connected via a sixth hinge shaft 11242, which can also be arranged along the axial direction of the rotating shaft mechanism 1. In a specific implementation, the second housing fixing frame 114 can be provided with a second slot 1142 on the side near the main shaft 12, and the slot wall of the second slot 1142 is provided with a hinge hole. One end of the second pull rod 1124 near the second housing fixing frame 114 can be located in the second slot 1142, and this end of the second pull rod 1124 is provided with a hinge hole. The sixth hinge shaft 11242 can pass through the hinge hole of the second slot 1142 and the hinge hole of the second pull rod 1124 respectively, rotatably connecting the second pull rod 1124 and the second housing fixing frame 114.

[0127] Figure 13 This is a cross-sectional schematic diagram of the rotating shaft mechanism 1 provided in the embodiments of this application in the unfolded state of the electronic device. Figure 14 This is a schematic cross-sectional view of the rotating shaft mechanism 1 provided in the embodiments of this application in the closed state of the electronic device. (See also...) Figure 13 and Figure 14 Based on the rotating shaft mechanism 1 provided in the above embodiments of this application, during the process of the electronic device changing from an unfolded state to a closed state, the second housing fixing frame 114 rotates clockwise around the main shaft 12, and drives the second gear connecting rod 1122 to rotate clockwise synchronously. The second gear connecting rod 1122 drives the second gear shaft 1121 to rotate counterclockwise through the meshing relationship with the second gear shaft 1121. During the rotation of the second gear shaft 1121, it can also drive the second rotating member 1123 to rotate synchronously, so that the second end of the second rotating member 1123 swings toward the side closer to the first housing fixing frame 113, thereby pulling the second pull rod 1124 to move toward the direction closer to the first housing fixing frame 113. Then, the second pull rod 1124 drives the second housing fixing frame 114 to move synchronously toward the direction closer to the main shaft 12 during the counterclockwise rotation. During the process of the electronic device changing from the closed state to the unfolded state, the second housing fixing frame 114 rotates counterclockwise around the main shaft 12, and drives the second gear connecting rod 1122 to rotate counterclockwise synchronously. The second gear connecting rod 1122 drives the second gear shaft 1121 to rotate clockwise through the meshing relationship with the second gear shaft 1121. During the rotation of the second gear shaft 1121, it can also drive the second rotating component 1123 to rotate synchronously, causing the second end of the second rotating component 1123 to swing away from the first housing fixing frame 113, thereby pushing the second pull rod 1124 to move away from the first housing fixing frame 113. Then, the second pull rod 1124 drives the second housing fixing frame 114 to move synchronously away from the main shaft 12 during the counterclockwise rotation.

[0128] In electronic devices using the pivot mechanism 1 provided in this application embodiment, the pivot mechanism 1, the first housing, and the second housing can provide three-section support for the flexible display screen, achieving good support for the flexible display screen in both the folded and unfolded states of the electronic device. Furthermore, the pivot mechanism 1 of this application can utilize the relatively small second rotating member 1123 to achieve the linkage of the second gear shaft 1121, the second gear connecting rod 1122, and the second pull rod 1124. The main shaft 12 can therefore meet the movement requirements of the second rotating member 1123 with a smaller width. This correspondingly reduces the bending area of ​​the flexible display screen, helping to reduce the difficulty of maintaining a constant length of the outer tangent of the pivot mechanism 1, thereby reducing the risk of the flexible display screen being pulled or arched.

[0129] In addition, the second gear connecting rod 1122 is rotatably connected to the second gear shaft 1121 located in the main shaft 12 through gear meshing. The rotation axis of the second gear connecting rod 1122 is the axis of the fourth gear. This design can bring the rotation axis of the second gear connecting rod 1122 closer to the flexible display screen, ensuring the overlap between the second gear connecting rod 1122 and the second housing fixing frame 114. This can reduce the wobbling angle of the second housing fixing frame 114 relative to the main shaft and improve the motion stability of the rotating shaft mechanism 1.

[0130] Figure 15 This is a cross-sectional schematic diagram of the rotating shaft mechanism 1 provided in the embodiments of this application in the unfolded state of the electronic device. Figure 16 This is a schematic cross-sectional view of the rotating shaft mechanism 1 provided in the embodiments of this application in the closed state of the electronic device. (See also...) Figure 15 and Figure 16 In this embodiment, the first gear 11112 of the first gear shaft 1111 and the third gear 11212 of the second gear shaft 1121 can mesh with each other. According to the aforementioned rotation process of the rotating shaft mechanism, during the process of the electronic device changing from an unfolded state to a closed state, when the first housing fixing frame 113 rotates counterclockwise, it drives the first gear shaft 1111 to rotate clockwise via the first gear connecting rod 1112. When the second housing fixing frame 114 rotates clockwise, it drives the second gear shaft 1121 to rotate clockwise via the second gear connecting rod 1122. Based on the meshing relationship between the first gear 11112 of the first gear shaft 1111 and the third gear 1121 of the second gear shaft 1121, the first gear shaft 1111 and the second gear shaft 1121 can rotate in opposite directions at the same speed. Therefore, the first housing fixing frame 113 and the second housing fixing frame 114 can also rotate synchronously towards each other at the same speed. This further enables the synchronous rotation of the first and second housings, effectively reducing the risk of the flexible display screen being subjected to instantaneous pressure or tensile stress and improving the reliability of the flexible display screen.

[0131] During the process of the electronic device changing from a closed state to an open state, the movement direction of each component is opposite to the movement direction of the electronic device changing from an open state to a closed state, thereby realizing the synchronous opposite rotation of the first housing fixing frame 113 and the second housing fixing frame 114.

[0132] As can be seen from the above description, in the embodiments of this application, the first rotating component and the second rotating component can not only enable the rotating shaft mechanism to realize the opening and closing function of the electronic device, but also use existing components to enable the first housing and the second housing to move synchronously. Therefore, there is no need to set up other structures in the rotating shaft mechanism to realize the synchronization function, which effectively simplifies the structural composition of the rotating shaft mechanism and reduces the cost and processing difficulty of the rotating shaft mechanism.

[0133] Figure 17 This is a partial structural diagram of the rotating shaft mechanism 1 provided in an embodiment of this application. Figure 18 This is a partially exploded view of the rotating shaft mechanism 1 provided in an embodiment of this application. (See also...) Figure 17 and Figure 18 As shown, in order to better realize the opening and closing of the rotating shaft mechanism, the rotating shaft mechanism can also be provided with a damping module 13 that can provide damping force to the rotating module, so that the rotating module can rotate stably under the action of damping force and avoid accidental opening and closing of the electronic device. The rotating shaft mechanism 1 can include a damping module 13, which can be correspondingly arranged with one of the rotating modules. Alternatively, the rotating shaft mechanism 1 can also include multiple damping modules 13, which can be arranged at intervals along the axial direction of the rotating shaft mechanism 1, and the multiple damping modules 13 can be corresponding one-to-one with the rotating modules. In addition, the damping module 13 can also include a first damping component 131 and a second damping component 132, which are respectively corresponding to the first rotating component 111 and the second rotating component 112 of the rotating module. The structure of the first damping component 131 will be described first below.

[0134] The first damping assembly 131 includes a first damping element 1311, a second damping element 1312, a first elastic element 1313, and a first limiting element 1314. The first damping element 1311, the second damping element 1312, the first elastic element 1313, and the first limiting element 1314 can be sequentially sleeved on the first rotating shaft 11111, and all of the above components are located on the same side of the first gear 11112 along the axial direction of the rotating shaft mechanism 1. For example, each component of the first damping assembly 131 and the first rotating element 1113 can be located on both sides of the first gear 11112.

[0135] In this embodiment, the first damping member 1311 is fixedly connected to the first rotating shaft 11111, the second damping member 1312 is rotatably connected to the first rotating shaft 11111, and the second damping member 1312 is relatively fixed to the main shaft. The first limiting member 1314 is fixedly connected to the first rotating shaft 11111, and the first elastic member 1313 is limited between the second damping member 1312 and the first limiting member 1314. Therefore, the first elastic member 1313 can apply an elastic force to the second damping member 1312, so that the second damping member 1312 abuts against the first damping member 1311 and applies a damping force to the first damping member 1311.

[0136] In one implementation, the first damping element 1311 can be fixed to the first rotating shaft 11111 by means of key connection, interference fit, or welding. In another implementation, the first damping element 1311 can also be integrally formed with the first gear 11112, which helps to simplify the manufacturing and assembly process of the rotating shaft mechanism 1.

[0137] Similarly, the first limiting member 1314 can be fixed to the first rotating shaft 11111 by means of key connection, interference fit, or welding. Alternatively, the first rotating shaft 11111 can be provided with a first annular groove 111111, and the first limiting member 1314 is partially located in the first annular groove 111111, thereby using the first annular groove 111111 to restrict the movement of the first limiting member 1314.

[0138] In one implementation, the outer peripheral surface of the second damping member 1312 may be provided with a first protrusion, and the corresponding position of the base of the spindle or the cover plate may be provided with a first limiting groove. The first protrusion may be assembled in the first limiting groove, thereby fixing the second damping member 1312 relative to the spindle in this way.

[0139] In one embodiment, the first damping member 1311 and the second damping member 1312 can be cams respectively. In this case, the first damping member 1311 can be provided with a first cam surface on the side facing the second damping member 1312, and the second damping member 1312 can be provided with a second cam surface on the side facing the first damping member 1311. Under the action of the elastic force of the first elastic member 1313, the second cam surface abuts against the first cam surface.

[0140] Both the first cam surface and the second cam surface can include multiple protrusions and recesses. When the inclined surfaces of the protrusions of the two cam surfaces come into contact, a damping force can be generated between the two cam surfaces to prevent them from continuing to rotate relative to each other. By rationally designing the curved contours of the first and second cam surfaces, during the closing process of the electronic device, as the first rotating shaft 11111 rotates, the first damping member 1311 can push the second damping member 1312 towards the first limiting member 1314, thereby compressing the first elastic member 1313, giving the user a more noticeable operating feel and improving the user experience. During the unfolding process of the electronic device, the first elastic member 1313 gradually rebounds from its compressed state and releases the accumulated elastic potential energy, thereby pushing the second damping member 1312 towards the first damping member 1311. In this way, the second damping member 1312 can apply a torque to the first damping member 1311 and the first rotating shaft 11111 to assist their rotation, thereby providing a certain unfolding assistance to the rotating shaft mechanism 1 and reducing the difficulty of unfolding the rotating shaft mechanism 1.

[0141] Furthermore, in this embodiment, through the rational design of the first cam surface and the second cam surface, the first damping element 1311 and the first rotating shaft 11111 can be hovered at a set angle, that is, the first rotating component 111 can be hovered. When the rotating shaft mechanism 1 is applied to an electronic device, the hovering design of the first rotating component 111 can allow the electronic device to be positioned in some intermediate states, thereby further improving the user experience.

[0142] In other embodiments, the first damping element 1311 and the second damping element 1312 can also be friction plates. During the rotation of the first damping element 1311 with the first rotating shaft, the contact surfaces of the first damping element 1311 and the second damping element 1312 generate friction due to relative motion. This friction can serve as a damping force to prevent the first damping element 1311 from continuing to move relative to the second damping element 1312. Therefore, when the electronic device is in the unfolded, closed, or intermediate states, the first damping component 131 can provide a damping force to maintain the electronic device in the corresponding state, thereby meeting the user's requirements for using the electronic device in different rotational states. Furthermore, during the unfolding and closing of the electronic device, the damping force applied by the second damping element 1312 to the first damping element 1311 can also provide the user with a more noticeable tactile feedback, which is beneficial to improving the user experience.

[0143] Similar to the structure of the first damping assembly 131, the second damping assembly 132 includes a third damping element 1321, a fourth damping element 1322, a second elastic element 1323, and a second limiting element 1324. The third damping element 1321, the fourth damping element 1322, the second elastic element 1323, and the second limiting element 1324 can be sequentially sleeved on the second rotating shaft 11211, and all of these components are located on the same side of the third gear 11212 along the axial direction of the rotating shaft mechanism 1. For example, each component of the second damping assembly 132 and the second rotating element 1123 can be located on both sides of the third gear 11212.

[0144] In this embodiment, the third damping member 1321 is fixedly connected to the second rotating shaft 11211, the fourth damping member 1322 is rotatably connected to the second rotating shaft 11211, and the fourth damping member 1322 is fixed relative to the main shaft. The second limiting member 1324 is fixedly connected to the second rotating shaft 11211, and the second elastic member 1323 is limited between the fourth damping member 1322 and the second limiting member 1324. Therefore, the second elastic member 1323 can apply an elastic force to the fourth damping member 1322, so that the fourth damping member 1322 abuts against the third damping member 1321 and applies a damping force to the third damping member 1321.

[0145] In one implementation, the third damping element 1321 can be fixed to the second shaft by means of key connection, interference fit, or welding. In another implementation, the third damping element 1321 can also be integrally formed with the third gear 11212, which helps to simplify the manufacturing and assembly process of the shaft mechanism 1.

[0146] Similarly, the second limiting member 1324 can be fixed to the second rotating shaft 11211 by means of key connection, interference fit, or welding. Alternatively, the second rotating shaft 11211 can be provided with a second annular groove 112111, and the second limiting member 1324 is partially located in the second annular groove 112111, thereby using the second annular groove 112111 to restrict the movement of the second limiting member 1324.

[0147] In one implementation, the outer peripheral surface of the fourth damping element 1322 may be provided with a second protrusion, and the corresponding position of the base of the spindle or the cover plate may be provided with a second limiting groove. The second protrusion may be assembled in the second limiting groove, thereby fixing the fourth damping element 1322 relative to the spindle in this way.

[0148] In one embodiment, the third damping member 1321 and the fourth damping member 1322 can be cams respectively. In this case, the third damping member 1321 can be provided with a third cam surface on the side facing the fourth damping member 1322, and the fourth damping member 1322 can be provided with a fourth cam surface on the side facing the third damping member 1321. Under the action of the elastic force of the second elastic member 1323, the fourth cam surface abuts against the third cam surface.

[0149] In the embodiments of this application, both the third cam surface and the fourth cam surface may include multiple protrusions and recesses. When the inclined surfaces of the protrusions of the two cam surfaces come into contact, a damping force that prevents the two cam surfaces from continuing to rotate relative to each other can be generated between the two cam surfaces. By rationally designing the curved contours of the third and fourth cam surfaces, during the closing process of the rotating shaft mechanism 1, as the second rotating shaft 11211 rotates, the third damping element 1321 can push the fourth damping element 1322 towards the second limiting element 1324, thereby compressing the second elastic element 1323, providing the user with a more noticeable operating feel and improving the user experience. During the unfolding process of the rotating shaft mechanism 1, the second elastic element 1323 gradually rebounds from its compressed state and releases the accumulated elastic potential energy, thereby pushing the fourth damping element 1322 towards the third damping element 1321. In this way, the fourth damping element 1322 can apply a torque to the third damping element 1321 and the second rotating shaft 11211 to assist their rotation, thereby providing a certain unfolding assistance to the rotating shaft mechanism 1 and reducing the difficulty of unfolding the rotating shaft mechanism 1.

[0150] Furthermore, in this embodiment, through the rational design of the third and fourth cam surfaces, the third damping element 1321 and the second rotating shaft 11211 can be hovered at a set angle, that is, the second rotating component 121 can be hovered. When the rotating shaft mechanism 1 is applied to an electronic device, the hovering design of the second rotating component 121 can allow the electronic device to be positioned in some intermediate states, thereby further improving the user experience.

[0151] In other embodiments, the third damping element 1321 and the fourth damping element 1322 can also be friction plates. During the rotation of the third damping element 1321 with the second rotating shaft 11211, the contact surfaces of the third damping element 1321 and the fourth damping element 1322 generate friction due to relative motion. This friction can serve as a damping force to prevent the third damping element 1321 from continuing to move relative to the fourth damping element 1322. Therefore, when the electronic device is in the unfolded, closed, or intermediate states, the second damping assembly 132 can provide a damping force to maintain the electronic device in the corresponding state, thereby meeting the user's requirements for using the electronic device in different rotational states. Furthermore, during the unfolding and closing of the electronic device, the damping force applied by the fourth damping element 1322 to the third damping element 1321 can also provide the user with a more noticeable tactile feedback, which is beneficial to improving the user experience.

[0152] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A hinge mechanism, the hinge mechanism being applied to a foldable electronic device, characterized in that, The rotating shaft mechanism includes a main shaft, a first rotating assembly, a second rotating assembly, a first housing fixing frame, and a second housing fixing frame. The first housing fixing frame and the second housing fixing frame are respectively disposed on both sides of the main shaft, wherein: The first rotating assembly includes a first gear shaft, a first gear connecting rod, a first rotating member, and a first pull rod. The first gear shaft includes a first rotating shaft and a first gear. The first rotating shaft is rotatably mounted on the main shaft and extends axially along the rotating shaft mechanism. The first gear connecting rod includes a first connecting rod and a second gear. The first connecting rod is slidably connected to the first housing fixing frame, and the second gear meshes with the first gear. The first rotating member is fixedly connected to the first rotating shaft. The first pull rod is rotatably connected to the first rotating member and to the first housing fixing frame. The axis of rotation between the first pull rod and the first rotating member is parallel to and does not coincide with the axis of rotation of the first rotating shaft relative to the main shaft. The second rotating assembly includes a second gear shaft, a second gear connecting rod, a second rotating member, and a second tie rod. The second gear shaft includes a second rotating shaft and a third gear. The second rotating shaft is rotatably mounted on the main shaft and extends axially along the rotating shaft mechanism. The second gear connecting rod includes a second connecting rod and a fourth gear. The second connecting rod is slidably connected to the second housing fixing frame, and the fourth gear meshes with the third gear. The second rotating member is fixedly connected to the second rotating shaft. The second tie rod is rotatably connected to the second rotating member and to the second housing fixing frame. The axis of rotatable connection between the second tie rod and the second rotating member is parallel to and does not coincide with the axis of rotation of the second rotating shaft relative to the main shaft. During the closing process of the electronic device, the first rotating component rotates with the first rotating shaft, causing the end of the first pull rod near the main shaft to move towards the side closer to the second housing fixing frame. The second rotating component rotates with the second rotating shaft, causing the end of the second pull rod near the main shaft to move towards the side closer to the first housing fixing frame. During the unfolding process of the electronic device, the first rotating component rotates with the first rotating shaft, causing the end of the first pull rod near the main shaft to move towards the side away from the second housing fixing frame. The second rotating component rotates with the second rotating shaft, causing the end of the second pull rod near the main shaft to move towards the side away from the first housing fixing frame.

2. The rotating shaft mechanism as described in claim 1, characterized in that, The first gear meshes with the third gear.

3. The rotating shaft mechanism as described in claim 1, characterized in that, The second gear is rotatably connected to the main shaft via a first hinge shaft, which extends along the axial direction of the rotating shaft mechanism; The fourth gear is rotatably connected to the main shaft via a second hinge shaft, which extends axially along the rotating shaft mechanism.

4. The rotating shaft mechanism as described in any one of claims 1 to 3, characterized in that, The first housing fixing frame is provided with a first sliding groove, which extends from the side close to the main shaft to the side away from the main shaft, and the first connecting rod is slidably disposed in the first sliding groove; The second housing mounting bracket is provided with a second sliding groove, which extends from the side near the main shaft toward the side away from the main shaft, and the second connecting rod is slidably disposed in the second sliding groove.

5. The rotating shaft mechanism as described in any one of claims 1 to 3, characterized in that, The first rotating member has a strip-shaped cross-section perpendicular to the axial direction of the rotating shaft mechanism. The first end of the first rotating member is fixedly connected to the first rotating shaft, and the second end of the first rotating member is rotatably connected to the first pull rod through a third hinge shaft. The third hinge shaft extends along the axial direction of the rotating shaft mechanism. The second rotating member has a strip-shaped cross-section perpendicular to the axial direction of the rotating shaft mechanism. The first end of the second rotating member is fixedly connected to the second rotating shaft, and the second end of the second rotating member is rotatably connected to the second pull rod through a fourth hinge shaft, which extends along the axial direction of the rotating shaft mechanism.

6. The rotating shaft mechanism as described in claim 5, characterized in that, The second end of the first rotating member has a first notch, which divides the second end of the first rotating member into a first part and a second part. The first part and the second part are spaced apart along the axial direction of the rotating shaft mechanism. The end of the first pull rod near the main shaft is located in the first notch, and the first pull rod is rotatably connected to the first part and the second part respectively through the third hinge shaft. The second rotating member has a second notch at its second end, which divides the second end of the second rotating member into a third part and a fourth part. The third part and the fourth part are spaced apart along the axial direction of the rotating shaft mechanism. The end of the second pull rod near the main shaft is located in the second notch, and the second pull rod is rotatably connected to the third part and the fourth part respectively through the fourth hinge shaft.

7. The rotating shaft mechanism as described in any one of claims 1 to 3, characterized in that, The main shaft includes a base, and a first surface of the base has a first receiving groove and a second receiving groove, the first receiving groove and the second receiving groove being distributed side by side along the width direction of the main shaft; The first gear shaft is rotatably disposed within the first receiving groove, and the second gear shaft is rotatably disposed within the second receiving groove.

8. The rotating shaft mechanism as described in claim 7, characterized in that, The main shaft also includes a cover plate, which covers the first surface of the base, and the cover plate has a third receiving groove and a fourth receiving groove on the side facing the base; The second gear is rotatably disposed in the third receiving groove, and the fourth gear is rotatably disposed in the fourth receiving groove.

9. The rotating shaft mechanism as described in claim 8, characterized in that, The first receiving groove is provided with a first boss on one side along the axial direction of the rotating shaft mechanism, and the first boss is provided with a first rotating groove; the third receiving groove is provided with a third boss opposite to the position of the first boss, and the third boss is provided with a third rotating groove; the end of the first rotating shaft is rotatably disposed in the hinge hole formed by the first rotating groove and the third rotating groove. The second receiving groove is provided with a second boss on one side along the axial direction of the rotating shaft mechanism, and the second boss is provided with a second rotating groove; the fourth receiving groove is provided with a fourth boss opposite to the position of the second boss, and the fourth boss is provided with a fourth rotating groove; the end of the second rotating shaft is rotatably disposed in the hinge hole formed by the second rotating groove and the fourth rotating groove.

10. The rotating shaft mechanism as described in claim 8 or 9, characterized in that, The bottom of the first receiving tank is provided with a first sinking trough, and the bottom of the third receiving tank is provided with a third sinking trough corresponding to the position of the first sinking trough; the bottom of the second receiving tank is provided with a second sinking trough, and the bottom of the fourth receiving tank is provided with a fourth sinking trough corresponding to the position of the second sinking trough. During the unfolding and closing of the electronic device, the two ends of the first rotating component swing within the first sinking trough and the third sinking trough, respectively, and the two ends of the second rotating component swing within the second sinking trough and the fourth sinking trough, respectively.

11. The rotating shaft mechanism as described in claim 10, characterized in that, Along the axial direction of the rotating shaft mechanism, the first rotating member and the second rotating member are misaligned.

12. The rotating shaft mechanism according to any one of claims 1 to 3, characterized in that, The rotating shaft mechanism further includes a first damping module and a second damping module, wherein: The first damping module includes a first damping element, a second damping element, a first elastic element, and a first limiting element, which are sequentially sleeved on the first rotating shaft. The first damping element is fixedly connected to the first rotating shaft, the second damping element is rotatably connected to the first rotating shaft, and the second damping element is relatively fixed to the main shaft. The first limiting element is fixedly connected to the first rotating shaft, and the first elastic element is limited between the second damping element and the first limiting element. Under the action of the elastic force of the first elastic element, the second damping element abuts against the first damping element and applies a damping force to the first damping element. The second damping module includes a third damping element, a fourth damping element, a second elastic element, and a second limiting element, which are sequentially sleeved on the second rotating shaft. The third damping element is fixedly connected to the second rotating shaft, the fourth damping element is rotatably connected to the second rotating shaft, and the fourth damping element is relatively fixed to the main shaft. The second limiting element is fixedly connected to the second rotating shaft, and the second elastic element is located between the fourth damping element and the second limiting element. Under the elastic force of the second elastic element, the fourth damping element abuts against the third damping element and applies a damping force to the third damping element.

13. The rotating shaft mechanism as described in claim 12, characterized in that, The first damping element and the second damping element are both cams, the first damping element having a first cam surface on the side facing the second damping element, and the second damping element having a second cam surface on the side facing the first damping element; and / or The third damping element and the fourth damping element are both cams. The third damping element has a third cam surface on the side facing the fourth damping element, and the fourth damping element has a fourth cam surface on the side facing the third damping element.

14. The rotating shaft mechanism as described in claim 12, characterized in that, The first damping element and the second damping element are respectively friction plates; and / or The third damping element and the fourth damping element are friction plates, respectively.

15. An electronic device, characterized in that, It includes a first housing, a second housing, a flexible display screen, and a pivot mechanism as described in any one of claims 1 to 14, 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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