Rotating shaft mechanism and electronic equipment

Abstract

A rotating shaft mechanism (1) comprises a base (12), a first rotating assembly (111), a second rotating assembly (112) and a synchronization assembly (113), the first rotating assembly (111) comprises a first swing arm (1111), and the first swing arm (1111) is rotatably connected with the base (12); the second rotating assembly (112) comprises a second swing arm (1121), and the second swing arm (1121) is rotationally connected with the base (12); the synchronization assembly (113) comprises a first driving arm (1131), a second driving arm (1132), a first sliding block (1133) and a second sliding block (1134), one end of the first driving arm (1131) is rotationally connected with the end, close to the base (12), of the first swing arm (1111), the other end of the first driving arm (1131) is rotationally connected with the first sliding block (1133), and the first sliding block (1133) is arranged on the base (12) in a sliding mode in the first direction; one end of the second driving arm (1132) is rotationally connected with one end, close to the base (12), of the second swing arm (1121), the other end of the second driving arm (1132) is rotationally connected with a second sliding block (1134), and the second sliding block (1134) is arranged on the base (12) in a sliding mode in the first direction; the first sliding block (1133) and the second sliding block (1134) are arranged at intervals in the axial direction of the rotating shaft mechanism (1), and the first sliding block (1133) and the second sliding block (1134) are in transmission connection. The electronic equipment comprises a first shell (2), a second shell (3), a flexible display screen and the rotating shaft mechanism (1). Therefore, the motion reliability of the rotating shaft mechanism can be improved, and the size of the rotating shaft mechanism is reduced.

Description

Rotating shaft mechanism and electronic equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on April 28, 2023, with application number 202310482978.5 and application name “A Rotating Shaft Mechanism and Electronic Device”, the entire contents of which are incorporated by reference into this application. Technical Field

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

[0004] As flexible display technology matures, the display mode of electronic devices has undergone tremendous changes. Foldable flexible screen mobile phones, foldable flexible screen tablets, and wearable electronic devices with foldable flexible screens are an important evolutionary direction of future smart electronic devices.

[0005] The hinge mechanism is a key component for achieving the closing and unfolding functions of foldable electronic devices. In addition to being used to change the folding state of the electronic device, it can also achieve synchronous rotation of the two housings of the electronic device through certain structural designs, thereby improving the movement reliability of the hinge mechanism and reducing the instantaneous force exerted by the two housings on the flexible display. However, as electronic devices continue to develop in the direction of lightweight and thinner devices, the size of the hinge mechanism must also be reduced accordingly to match the thin devices. However, the structural components used to achieve the synchronization function in the current hinge mechanism are often too large to adapt to the development trend of lightweight hinge mechanisms and even electronic devices.

[0006] Summary of the Invention

[0007] The present application provides a rotating shaft mechanism and an electronic device to improve the movement reliability of the rotating shaft mechanism and reduce the size of the rotating shaft mechanism.

[0008] In the first aspect, the present application provides a rotating shaft mechanism, which includes a base, a first rotating assembly, a second rotating assembly, and a synchronization assembly. The first rotating assembly and the second rotating assembly can be respectively arranged on opposite sides of the base. The first rotating assembly includes a first swing arm, which is rotatably connected to the base; the second rotating assembly includes a second swing arm, which is rotatably connected to the base; the synchronization assembly includes a first driving arm, a second driving arm, a first slider, and a second slider. One end of the first driving arm is rotatably connected to an end of the first swing arm close to the base, and the other end of the first driving arm is rotatably connected to the first slider. The first slider is slidably arranged on the base along a first direction; one end of the second driving arm is rotatably connected to an end of the second swing arm close to the base, and the other end of the second driving arm is rotatably connected to the second slider. The second slider is slidably arranged on the base along a first direction; the first slider and the second slider are spaced apart along the axial direction of the rotating shaft mechanism, and are in transmission connection with each other.

[0009] In the present application, during the process of unfolding or closing the hinge mechanism, based on the transmission connection relationship between the first slider and the second slider, the first slider and the second slider can slide synchronously, thereby enabling the first driving arm and the second driving arm to rotate synchronously, and further enabling the first swing arm connected to the first driving arm and the second swing arm connected to the second driving arm to rotate synchronously toward or away from each other, and the rotation angles of the two swing arms can be consistent. In this way, during the synchronous rotation of the two swing arms, the first rotating assembly and the second rotating assembly can also rotate synchronously toward or away from each other relative to the base. This not only improves the movement reliability of the hinge mechanism, but also reduces the instantaneous force applied to the flexible display, which is beneficial to improving the reliability of the flexible display. In addition, compared with the traditional method of achieving synchronization using multiple transmission gears, the synchronization assembly provided by the present application can significantly reduce the space occupied in the thickness direction of the hinge mechanism, thereby helping to achieve a lightweight and thin design for electronic devices.

[0010] In some embodiments, the first direction can be perpendicular to the axial direction of the rotating shaft mechanism, that is, the first direction can be the width direction of the rotating shaft mechanism. This design helps to further reduce the size of the synchronization component and reduce the layout difficulty of the synchronization assembly on the rotating shaft mechanism.

[0011] In some embodiments, the base may be provided with a first guide groove and a second guide groove, and the first guide groove and the second guide groove are arranged at intervals along the axial direction of the rotating shaft mechanism. The first slider can be slidably set in the first guide groove, and the second slider can be slidably set in the second guide groove to improve the movement reliability of the first slider and the second slider.

[0012] In some embodiments, the synchronization assembly may further include a connecting rod, with a first waist-shaped hole and a second waist-shaped hole respectively provided at both ends of the connecting rod, and the first waist-shaped hole and the second waist-shaped hole may respectively extend along the length direction of the connecting rod. The first slider is provided with a first hinge shaft, which is disposed in the first waist-shaped hole; the second slider is provided with a second hinge shaft, which is disposed in the second waist-shaped hole. As the first slider and the second slider slide, the first hinge shaft and the second hinge shaft can jointly drive the connecting rod to rotate, and the first hinge shaft slides in the first waist-shaped hole, and the second hinge shaft slides in the second waist-shaped hole. In this way, the connecting rod can be used to achieve synchronous sliding of the first slider and the second slider toward or away from each other, thereby achieving synchronous rotation of the first rotating assembly and the second rotating assembly.

[0013] In some embodiments, the connecting rod may also be provided with a third hinge hole, which is located between the first waist-shaped hole and the second waist-shaped hole, and the distance between the third hinge hole and the center of the first waist-shaped hole is equal to the distance between the third hinge hole and the center of the second waist-shaped hole; the base is provided with a third hinge shaft, which can be rotatably set in the third hinge hole, thereby rotatably connecting the connecting rod and the base to improve the movement stability of the connecting rod, and thereby improve the transmission connection reliability of the first slider and the second slider.

[0014] In some embodiments, the synchronization assembly may further include an intermediate gear. A first rack is provided on the side of the first slider facing the second slider, and a second rack is provided on the side of the second slider facing the first slider. The intermediate gear is located between the first and second sliders and meshes with the first and second racks, respectively. In this way, the first and second sliders can achieve synchronous sliding toward or away from each other through the intermediate gear.

[0015] In some embodiments, in addition to the first swing arm, the first rotating assembly may further include a first support arm, a first shell bracket, and a first door panel, wherein the first door panel has a first support surface for supporting the flexible display screen, the first swing arm and the first support arm are arranged on a side of the first door panel opposite to the first support surface, the first swing arm is fixedly connected to the first door panel, the first support arm is rotatably connected to the base, and the rotation axis of the first support arm is parallel to and does not overlap with the rotation axis of the first swing arm; the first shell bracket is rotatably connected to the first swing arm and the first door panel, respectively, and the first shell bracket is slidably connected to the first support arm. Similarly, in addition to the second swing arm, the second rotating assembly may further include a second support arm, a second shell bracket, and a second door panel, wherein the second door panel has a second support surface for supporting the flexible display screen, the second swing arm and the second support arm are arranged on a side of the second door panel opposite to the second support surface, the second swing arm is fixedly connected to the second door panel, the second support arm is rotatably connected to the base, and the rotation axis of the second support arm is parallel to and does not overlap with the rotation axis of the second swing arm; the second shell bracket is rotatably connected to the second swing arm and the second door panel, respectively, and the first shell bracket is slidably connected to the first support arm.

[0016] When the first shell bracket and the second shell bracket rotate toward each other, the first shell bracket can drive the first swing arm, the first support arm and the first door panel to rotate around the base, so that the side of the first door panel close to the base moves toward the direction away from the base; the second shell bracket can drive the second swing arm, the second support arm and the second door panel to rotate around the base, so that the side of the second door panel close to the base moves toward the direction away from the base. When the first door panel rotates to the first position and the second door panel rotates to the second position, the first door panel and the second door panel form an angle, and the first door panel, the second door panel and the base together form a screen space for accommodating a flexible display screen. Compared with the solution of three or more door panels, the hinge mechanism provided in the present application can effectively reduce the bending transition area in the formed screen space, thereby reducing the extrusion of the flexible display screen and improving the reliability of the flexible display screen.

[0017] In some embodiments, the base has a first surface, coextensive with the first and second support surfaces, and a groove is formed on the first surface of the base, extending along the axis of the hinge mechanism. When the hinge mechanism is extended, the first and second door panels each cover at least a portion of the groove. However, when the hinge mechanism is closed, the first and second door panels expose the groove, forming part of the screen-receiving space. This design allows the groove to effectively avoid the bending area of ​​the flexible display, reducing the risk of the flexible display being squeezed and extending its service life.

[0018] For example, the bottom surface of the groove can be an arc-shaped surface, and the arc-shaped surface is convex toward the screen space. In this way, the screen space formed by the hinge mechanism can better match the shape of the flexible display in the bent state, further reducing the risk of the flexible display being squeezed.

[0019] In some embodiments, a first arcuate groove and a second arcuate groove may be provided on both sides of the base, respectively. A first arcuate rotating block is provided on the side of the first swing arm close to the base, and the first arcuate rotating block is disposed in and can slide along the first arcuate groove, thereby realizing a rotational connection between the first swing arm and the base; a second arcuate rotating block is provided on the side of the second swing arm close to the base, and the second arcuate rotating block is disposed in and can slide along the second arcuate groove, thereby realizing a rotational connection between the second swing arm and the base.

[0020] In some embodiments, both ends of the first arcuate groove and both ends of the second arcuate groove may extend through the base, respectively. When the hinge mechanism is in the deployed state, the end surface of the first arcuate rotating block near the base may extend out of the first arcuate groove and align with the first support surface, while the end surface of the second arcuate rotating block near the base may extend out of the second arcuate groove and align with the second support surface, thereby jointly providing a flat support for the flexible display screen with the first and second door panels.

[0021] In some embodiments, the first shell bracket is provided with a third arc-shaped groove, and the end of the first swing arm away from the base has a third arc-shaped rotating block, and the third arc-shaped rotating block is provided in the third arc-shaped groove and can slide along the third arc-shaped groove, thereby realizing the rotational connection between the first swing arm and the first shell bracket; similarly, the second shell bracket is provided with a fourth arc-shaped groove, and the end of the second swing arm away from the base has a fourth arc-shaped rotating block, and the fourth arc-shaped rotating block is provided in the fourth arc-shaped groove and can slide along the fourth arc-shaped groove, thereby realizing the rotational connection between the second swing arm and the second shell bracket.

[0022] In some embodiments, the first shell bracket is provided with a first slide groove, and the bottom of the first slide groove can gradually tilt toward the first support surface along the direction away from the base, and the first support arm is provided in the first slide groove and can slide along the first slide groove, thereby realizing a sliding connection between the first support arm and the first shell bracket; similarly, the second shell bracket is provided with a second slide groove, and the bottom of the second slide groove can gradually tilt toward the second support surface along the direction away from the base, and the second support arm is provided in the second slide groove and can slide along the bottom of the second slide groove, thereby realizing a sliding connection between the second support arm and the second shell bracket.

[0023] In some embodiments, the first shell bracket is provided with a fifth arc-shaped groove, and the side of the first door panel opposite to the first support surface is provided with a fifth arc-shaped rotating block, the fifth arc-shaped rotating block is provided in the fifth arc-shaped groove and can rotate along the fifth arc-shaped groove, thereby realizing the rotational connection between the first door panel and the first shell bracket; similarly, the second shell bracket is provided with a sixth arc-shaped groove, and the side of the second door panel opposite to the second support surface is provided with a sixth arc-shaped rotating block, the sixth arc-shaped rotating block is provided in the sixth arc-shaped groove and can rotate along the sixth arc-shaped groove, thereby realizing the rotational connection between the second door panel and the second shell bracket.

[0024] In some embodiments, the first shell bracket is provided with a first limiting wall, and the first limiting wall and the first support arm are spaced apart along the axis of the rotating shaft mechanism. The rotating shaft mechanism also includes a first damping assembly, which can be provided between the first support arm and the first limiting wall. The first damping assembly includes a first cam, a second cam and a first elastic member. The first cam is provided on the side of the first support arm facing the first limiting wall; the second cam is provided on the side of the first cam away from the first support arm, and the cam surface of the second cam abuts against the cam surface of the first cam; the first elastic member is provided on the side of the second cam away from the first cam, and the first elastic member is elastically limited between the second cam and the first limiting wall. During the expansion or closing process of the rotating shaft mechanism, the first damping assembly can provide a certain damping force for the first rotating assembly and the second rotating assembly, so that the first rotating assembly and the second rotating assembly can rotate stably under the action of the damping force, thereby avoiding the accidental opening and closing of the electronic device and improving the user experience.

[0025] In some embodiments, the first housing support is provided with a first retaining groove arranged axially along the axis of the rotating shaft mechanism. The first retaining groove has a first opening facing the first support arm, and a bottom wall within the first retaining groove, opposite the first opening, can be formed as the aforementioned first retaining wall. The first elastic member is disposed within the first retaining groove, and at least a portion of the second cam is disposed within the first retaining groove, with the cam surface of the second cam abutting the cam surface of the first cam through the first opening. This design can improve the structural stability and reliability of the first damping assembly and facilitate the structural compactness of the rotating shaft mechanism.

[0026] In some embodiments, the first cam may be fixed to the side of the first support arm by bonding, welding, or the like.

[0027] In other embodiments, the first cam and the first support arm may be an integrated structure, which helps to simplify the manufacturing and assembly process of the rotating shaft mechanism.

[0028] In some embodiments, the first elastic member may be a spring. The first damping assembly may further include a first guide post, which may be fixed to a side of the second cam facing away from the first cam and extend axially along the shaft mechanism. The spring may be sleeved onto the corresponding first guide post to reduce the risk of displacement of the spring during elastic deformation.

[0029] In a second aspect, the present application further provides an electronic device, which may include a first housing, a second housing, a flexible display, and the hinge mechanism of any embodiment of the first aspect. The first housing and the second housing may be disposed on either side of the hinge mechanism, the first housing being fixedly connected to a first housing bracket, and the second housing being fixedly connected to a second housing bracket; the flexible display may continuously cover the first door panel, the second door panel, and the hinge mechanism, and the flexible display may be fixedly connected to the first door panel and the second door panel.

[0030] In the electronic device provided by the present application, during the process of unfolding or closing, the first rotating component and the second rotating component can rotate synchronously toward or away from each other relative to the base, so that the first shell and the second shell can also rotate synchronously toward or away from each other. This not only improves the opening and closing reliability of the electronic device, but also reduces the instantaneous force applied to the flexible display, which is conducive to improving the reliability of the flexible display. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] FIG1 is a schematic structural diagram of an electronic device provided in an embodiment of the present application;

[0032] FIG2 is a schematic structural diagram of the electronic device shown in FIG1 in an unfolded state;

[0033] FIG3 is a schematic diagram of a partially exploded structure of the electronic device shown in FIG2 ;

[0034] FIG4 is a schematic structural diagram of a spindle module provided in an embodiment of the present application;

[0035] FIG5 is a schematic diagram of the exploded structure of the spindle module shown in FIG4 ;

[0036] FIG6 is a schematic structural diagram of a first swing arm provided in an embodiment of the present application;

[0037] FIG7 is a schematic structural diagram of a first housing support provided in an embodiment of the present application;

[0038] FIG8 is a schematic structural diagram of a first support arm provided in an embodiment of the present application;

[0039] FIG9 is a schematic diagram of a partial structure of a first door panel provided in an embodiment of the present application;

[0040] FIG10 is a schematic diagram of a partial structure of a rotating shaft mechanism provided in an embodiment of the present application in an expanded state;

[0041] FIG11 is a schematic diagram of a partial structure of a rotating shaft mechanism in an intermediate state provided in an embodiment of the present application;

[0042] FIG12 is a schematic diagram of a partial structure of a rotating shaft mechanism in a closed state provided in an embodiment of the present application;

[0043] FIG13 is a schematic structural diagram of a synchronization component provided in an embodiment of the present application;

[0044] FIG14 is a schematic diagram of the exploded structure of the synchronization assembly shown in FIG13;

[0045] FIG15 is a schematic diagram of a planar structure of another synchronization component provided in an embodiment of the present application;

[0046] FIG16 is a schematic structural diagram of a first damping assembly provided in an embodiment of the present application from a viewing angle;

[0047] FIG17 is a schematic structural diagram of the first damping assembly provided in an embodiment of the present application from another perspective;

[0048] FIG18 is a schematic diagram of the exploded structure of the first damping assembly shown in FIG16 .

[0049] Reference numerals:

[0050] 1-rotating shaft; 1a-exterior surface of the rotating shaft mechanism; 1b-supporting surface of the rotating shaft mechanism; 11-spindle module; 111-first rotating assembly;

[0051] 1111-first swing arm; 11111-first arc-shaped rotating block; 11112-first extension arm; 11113-third arc-shaped rotating block;

[0052] 11114-protrusion; 1112-first support arm; 11121-first slide plate; 1113-first housing bracket;

[0053] 11131-third arc groove; 11132-first slide groove; 111321-first slide groove; 11133-fifth arc groove;

[0054] 11134 - first limiting wall; 11135 - first limiting groove; 111351 - first opening; 1114 - first door panel;

[0055] 11141 - first supporting surface; 11142 - opening; 11143 - fifth arc-shaped rotating block; 112 - second rotating assembly;

[0056] 1121-second swing arm; 11211-second arc-shaped rotating block; 11213-fourth arc-shaped rotating block; 1122-first supporting arm;

[0057] 1123 - second housing bracket; 11232 - second slide groove; 11231 - fourth arc groove; 1124 - second door panel;

[0058] 11241-second supporting surface; 11243-sixth arc-shaped rotating block;

[0059] 113-synchronizing assembly; 1131-first driving arm; 1132-second driving arm; 1133-first slider; 11331-first hinge shaft;

[0060] 11332 - first rack; 1134 - second slider; 11341 - second hinge shaft; 11342 - second rack; 1135 - connecting rod;

[0061] 11351 - first hinge hole; 11352 - second hinge hole; 11353 - third hinge hole; 1136 - intermediate gear;

[0062] 114-first damping assembly; 1141-first cam; 11411-first cam surface; 1142-second cam;

[0063] 11421 - second cam surface; 1143 - first elastic member; 115 - second damping assembly;

[0064] 12-base; 121-positioning hole; 122-first arc groove; 123-second arc groove; 124-groove; 125-first avoidance groove;

[0065] 126 - second avoidance groove; 127 - first guide groove; 128 - second guide groove; 129 - third hinge axis;

[0066] 13-cover plate; 131-accommodation groove; 132-positioning column;

[0067] 2-first housing; 2a-appearance surface of the first housing; 2b-support surface of the first housing; 201-first mounting groove;

[0068] 3-second shell; 3a-appearance surface of the second shell; 3b-support surface of the second shell; 301-second installation groove. DETAILED DESCRIPTION

[0069] In order to make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted. The words expressing position and direction described in the embodiments of the present application are all explained using the accompanying drawings as examples, but changes may be made as needed, and the changes made are all included in the scope of protection of the present application. The drawings in the embodiments of the present application are only used to illustrate the relative position relationship and do not represent the true proportion.

[0070] It should be noted that the following description sets forth specific details to facilitate understanding of the present application. However, the embodiments of the present application can be implemented in a variety of ways other than those described herein, and those skilled in the art can make similar generalizations without violating the connotations of the embodiments of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0071] Referring to Figure 1, Figure 1 is a schematic structural diagram of an electronic device provided in an embodiment of the present application. The electronic device can be a mobile phone, a personal digital assistant (PDA), a laptop computer, a tablet computer or other device with a foldable function. The electronic device in the embodiment shown in Figure 1 is described using a mobile phone as an example. The electronic device may include a hinge mechanism 1, a flexible display screen (not shown in the figure) and two shells. For ease of description, the two shells may be named a first shell 2 and a second shell 3 respectively. The first shell 2 and the second shell 3 are located on both sides of the hinge mechanism 1 and can rotate around the hinge mechanism 1. When in use, the electronic device can be closed and unfolded according to different usage scenarios. The electronic device provided in an embodiment of the present application may be an inward-folding electronic device. In the embodiment shown in Figure 1, the electronic device is in a closed state, which shows the relative positional relationship between the hinge mechanism and the two shells when the electronic device is closed. At this time, the appearance surface 1a of the hinge mechanism 1, the first appearance surface 2a of the first shell 2 and the second appearance surface 3a of the second shell 3 can collectively serve as the appearance surface of the electronic device. Among them, the appearance surface 1a of the hinge mechanism 1 refers to the surface of the hinge mechanism 1 facing away from the flexible display screen, the first appearance surface 2a of the first shell 2 refers to the surface of the first shell 2 facing away from the flexible display screen, and the second appearance surface 3a of the second shell 3 refers to the surface of the second shell 3 facing away from the flexible display screen.

[0072] Referring also to Figure 2, Figure 2 is a schematic diagram of the structure of the electronic device shown in Figure 1 when in the unfolded state. Figure 2 illustrates the structure of the support surface 1b of the hinge mechanism 1, the support surface 2b of the first housing 2, and the support surface 3b of the second housing 3. Here, the support surface 1b of the hinge mechanism 1 refers to the surface of the hinge mechanism 1 that supports the flexible display, the support surface 2b of the first housing 2 refers to the surface of the first housing 2 that supports the flexible display, and the support surface 3b of the second housing 3 refers to the surface of the second housing 3 that supports the flexible display. The flexible display can continuously cover the support surface 2b of the first housing 2, the support surface 1b of the hinge mechanism, and the support surface 3b of the second housing 3. The flexible display can be fixedly connected to the support surface 2b of the first housing 2 and the support surface 3b of the second housing 3, and the connection method can be, but is not limited to, adhesive bonding. In this way, when the electronic device is in the unfolded state, the hinge mechanism 1, the first housing 2, and the second housing 3 can support the flexible display. During the relative rotation of the first shell 2 and the second shell 3 from the expanded state to the closed state, or from the closed state to the expanded state, the flexible display screen can be bent or flattened along with the first shell 2 and the second shell 3 .

[0073] During the relative rotation of the first shell 2 and the second shell 3 from the unfolded state shown in Figure 2 to the closed state shown in Figure 1, or from the closed state shown in Figure 1 to the unfolded state shown in Figure 2, the flexible display screen can be bent or flattened along with the first shell 2 and the second shell 3.

[0074] Figure 3 is a partially exploded view of the electronic device shown in Figure 2 . Referring to Figure 3 , in this embodiment of the present application, the first housing 2 has a first mounting groove 201 on the side proximal to the hinge mechanism 1, and the second housing 3 has a second mounting groove 301 on the side proximal to the hinge mechanism 1. One side of the hinge mechanism 1 can be partially accommodated within the first mounting groove 201, while the other side of the hinge mechanism 1 can be partially accommodated within the second mounting groove 301. The hinge mechanism can include one or more spindle modules 11. Figure 3 illustrates a case where the hinge mechanism 1 includes three spindle modules 11. These three spindle modules 11 can be spaced apart along the axial direction of the hinge mechanism 1. The axial direction of the hinge mechanism 1 can be understood as the direction extending along the axis about which the first and second housings 2 and 3 rotate about the hinge mechanism 1. The first and second housings 2 and 3 can be rotatably connected via these one or more spindle modules 11, effectively improving the stability of the electronic device's first and second housings 2 and 3 relative to the hinge mechanism 1.

[0075] In some possible implementations, the rotating shaft mechanism 1 may further include a base 12 arranged along the axial direction, and the base 12 may be used to support the one or more spindle modules 11. When there are multiple spindle modules 11, in one implementation, the multiple spindle modules 11 may each use a base 12 as a supporting component to improve the integration of the rotating shaft mechanism 1. In another implementation, the rotating shaft mechanism 1 may be provided with a base 12 corresponding to each spindle module 11, so that each spindle module 11 uses the corresponding base 12 as a supporting component. The embodiment shown in Figure 3 is described by taking the rotating shaft mechanism 1 as an example in which it includes three bases 12.

[0076] The hinge mechanism 1 may further include a cover plate 13, which may be disposed on the side of the base 12 facing away from the flexible display screen. In a specific implementation, the side of the cover plate 13 facing the flexible display screen may be provided with a receiving groove 131 corresponding to each base 12, and each base 12 may be disposed within the corresponding receiving groove 131. For example, the base 12 may not be limited to being fixed to the corresponding receiving groove 131 by adhesive bonding. Optionally, a plurality of positioning posts 132 may be provided at the bottom of the receiving groove 131, and correspondingly, the base 12 may be provided with positioning holes 121 corresponding to the plurality of positioning posts 132. When the base 12 is installed in the receiving groove 131, the positioning posts 132 at the bottom of the receiving groove 131 may be disposed in the corresponding positioning holes 121, thereby achieving positioning of the base 12 within the receiving groove 131 through the mutual cooperation between the positioning posts 132 and the positioning holes 121. In addition, the side surface of the base 12 facing the flexible display is defined as the first surface of the base 12. In a specific implementation, the end surface of the positioning column 132 may not exceed the first surface of the base 12 to avoid squeezing the flexible display.

[0077] Referring to Figures 1 to 3 , when the electronic device is in the unfolded state, the side of the cover 13 facing away from the flexible display can be hidden within the first mounting groove 201 of the first housing 2 and the second mounting groove 301 of the second housing 3. At this time, the exterior surface 2a of the first housing 2 and the exterior surface 3a of the second housing 3 can together constitute the exterior surface of the electronic device. When the electronic device switches from the unfolded state to the closed state, as the first housing 2 and the second housing 3 rotate, the side of the cover 13 facing away from the flexible display gradually becomes exposed from the first mounting groove 201 of the first housing 2 and the second mounting groove 301 of the second housing 3. When the electronic device switches to the closed state, the exterior surface 2a of the first housing 2, the exterior surface 3a of the second housing 3, and the side of the cover 13 facing away from the flexible display together constitute the exterior surface of the electronic device. In other words, the surface of the cover 13 facing away from the base 12 is the surface of the hinge mechanism 1 that constitutes the exterior surface of the electronic device.

[0078] Please continue to refer to Figure 3. In this embodiment, the spindle module 11 can include two rotating components, namely a first rotating component 111 and a second rotating component 112. The first rotating component 111 and the second rotating component 112 can be respectively arranged on opposite sides of the base 12. For the convenience of description, in the following embodiments of this application, the spindle module 11 is mainly described by taking the specific setting method of the first rotating component 111 and the connection relationship between the first rotating component 111 and the base 12 as examples, and the second rotating component 112 side can be set with reference to the first rotating component 111 side. It should be noted that the design of the second rotating component 112 can be completely consistent with the first rotating component 111, or it can only refer to the components and connection relationships included in the first rotating component 111. Other parameters can be adaptively adjusted and do not require complete consistency.

[0079] Figure 4 is a schematic diagram of the structure of the spindle module 11 according to an embodiment of the present application, and Figure 5 is an exploded schematic diagram of the spindle module 11 shown in Figure 4. Referring to Figures 4 and 5 , in this embodiment of the present application, the first rotating assembly 111 may include a first swing arm 1111, a first support arm 1112, a first housing bracket 1113, and a first door panel 1114. The first door panel 1114 may have a first support surface 11141 for supporting the flexible display screen, and the flexible display screen may be fixedly connected to the first support surface 11141. The first swing arm 1111 and the first support arm 1112 may be disposed on a side of the first door panel 1114 facing away from the flexible display screen. The first swing arm 1111 and the first support arm 1112 may be axially distributed along the axis of the rotating shaft mechanism and rotatably connected to the base 12, respectively. The rotation axis of the first swing arm 1111 and the first support arm 1112 are parallel and do not overlap. The first housing bracket 1113 may be disposed on a side of the first swing arm 1111 and the first support arm 1112 facing away from the first door panel 1114. The first housing bracket 1113 may be fixedly connected to the first housing, and the first housing bracket 1113 may be rotatably connected to the first swing arm 1111 and slidably connected to the first support arm 1112. In addition, the first door panel 1114 may be fixedly connected to the first swing arm 1111 and rotatably connected to the first housing bracket 1113. Based on the aforementioned connection relationship, a crank slider mechanism can be formed between the first swing arm 1111, the first support arm 1112, and the first housing bracket 1113. During the expansion and closing of the hinge mechanism, the first housing bracket 1113 rotates synchronously with the first housing, thereby driving the first swing arm 1111 and the first support arm 1112 to rotate synchronously around the base 12. At the same time, the first door panel 1114 can also rotate along a specific trajectory driven by the first housing bracket 1113 and the first swing arm 1111, thereby providing a flat support for the flexible display when the hinge mechanism is in the expanded state, and, when the hinge mechanism is in the closed state, together with the second rotating assembly 112 and the base 12, provides a certain amount of space for the flexible display.

[0080] FIG6 is a schematic structural diagram of the first swing arm 1111 provided in an embodiment of the present application. Referring to FIG5 and FIG6 , in this embodiment, a first arc-shaped rotating block 11111 may be provided on a side of the first swing arm 1111 close to the base 12. Accordingly, the base 12 may be provided with a first arc-shaped slot 122, the two ends of which may respectively pass through the base 12. The first arc-shaped rotating block 11111 of the first swing arm 1111 may be accommodated in the first arc-shaped slot 122 and may rotate along the arc-shaped surface of the first arc-shaped slot 122, thereby realizing the rotation of the first swing arm 1111 around the base 12, and the rotation center of the first swing arm 1111 is arranged along the axial direction of the rotating shaft mechanism. This method in which the arc-shaped slot and the arc-shaped rotating block cooperate to realize rotation around an axis determined by a virtual position can be referred to as a virtual axis rotation connection method. That is, the two rotating entities do not directly achieve relative rotation via a physical pin, but rather achieve a rotational connection through the aforementioned mating structure. This connection method helps reduce the volume of the spindle unit and facilitates the miniaturization of the shaft mechanism. The first arc-shaped rotating block 11111 can be, but is not limited to, a circular arc-shaped rotating block, and the first arc-shaped groove 122 can be, but is not limited to, a circular arc-shaped groove.

[0081] In a specific embodiment, a first extension arm 11112 may be provided on a side of the first swing arm 1111 close to the base 12, and a first arc-shaped rotating block 11111 may be provided at the end of the first extension arm 11112 along the axial direction of the rotating shaft mechanism. For example, the number of first extension arms 11112 may be one or more. For example, the embodiment shown in FIG6 shows a case where the first swing arm 1111 includes two first extension arms 11112, which are spaced apart along the axial direction of the rotating shaft mechanism. A first arc-shaped rotating block 11111 may be provided at each end of each first extension arm 11112. In other words, the first swing arm 1111 in this embodiment is provided with a total of four first arc-shaped rotating blocks 11111. Accordingly, the number of first arc-shaped slots 122 on the base 12 may also be four, with each first arc-shaped rotating block 11111 being rotatably disposed within a corresponding first arc-shaped slot 122. The rotational cooperation between the multiple sets of arc-shaped rotating blocks and the arc-shaped grooves can effectively improve the movement stability of the first swing arm 1111 relative to the base 12.

[0082] Of course, in some other embodiments, the first swing arm 1111 and the base 12 can also be rotatably connected through a pin shaft. In this case, hinge holes can be set on the first swing arm 1111 and the base 12 respectively, and the pin shaft can be rotatably set in the hinge holes of the two.

[0083] FIG7 is a schematic diagram of the structure of the first housing support 1113 provided in an embodiment of the present application. Referring to FIG6 and FIG7 , in this embodiment, a third arcuate rotating block 11113 may be provided at the end of the first swing arm 1111 away from the base 12, and the first housing support 1113 may be provided with a third arcuate slot 11131. The third arcuate rotating block 11113 of the first swing arm 1111 may be received in the third arcuate slot 11131 and may rotate along the arcuate surface of the third arcuate slot 11131, thereby achieving a rotational connection between the first swing arm 1111 and the first housing support 1113.

[0084] To improve the stability of the relative motion between the first swing arm 1111 and the first housing support 1113, one or more third arc-shaped rotating blocks 11113 may be provided. For example, the embodiment shown in FIG6 illustrates a case where the first swing arm 1111 includes two third arc-shaped rotating blocks 11113. Along the axial direction of the rotating shaft mechanism, the two third arc-shaped rotating blocks 11113 may be disposed at either end of the first swing arm 1111. Accordingly, the first housing support 1113 may be provided with two third arc-shaped slots 11131, with each third arc-shaped rotating block 11113 being rotatably disposed within a corresponding third arc-shaped slot 11131.

[0085] In addition, in some other embodiments, the first swing arm 1111 and the first shell bracket 1113 can also be rotatably connected through a pin shaft, which will not be described in detail here.

[0086] FIG8 is a schematic diagram of the structure of the first support arm 1112 provided in an embodiment of the present application. Referring to FIG5 and FIG8 , in this embodiment of the present application, the first support arm 1112 may be provided with a hinge hole a at one end thereof proximate to the base 12. Accordingly, the base may also be provided with a hinge hole (not shown). The first support arm 1112 may be rotatably connected to the base 12 by rotating a pin disposed in the hinge hole a and the hinge hole of the base 12.

[0087] Referring to Figures 7 and 8 together, a first slide groove 11132 can be provided on a side of the first shell bracket 1113 facing the first support arm 1112. In the direction away from the base 12, the bottom of the first slide groove 11132 gradually tilts toward the first support surface 11141 close to the first door panel 1114. The side of the first support arm 1112 away from the base can be installed in the first slide groove 11132 and can slide in the first slide groove 11132, thereby realizing a sliding connection between the first support arm 1112 and the first shell bracket 1113, and by reasonably designing the inclination angle of the bottom of the first slide groove 11132, the movement coordination of the crank slider mechanism composed of the first support arm 1112, the first swing arm 1111 and the first shell bracket 1113 can be ensured, thereby improving the movement reliability of the first rotating component. In addition, in order to reduce the risk of the first support arm 1112 slipping out of the first slide groove 11132, the groove wall of the first slide groove 11132 may be provided with a first slideway 111321, and accordingly, the side of the first support arm 1112 may be provided with a first slide plate 11121, and the first slide plate 11121 may be slidably set in the first slideway 111321. In this way, on the one hand, the first support arm 1112 can be limited in the first slide groove 11132, and on the other hand, the first slideway 111321 can also be used to provide guidance for the sliding of the first support arm 1112 in the first slide groove 11132, so as to improve the movement stability of the first support arm 1112.

[0088] FIG9 is a schematic diagram of a partial structure of a first door panel provided in an embodiment of the present application. Referring to FIG6 and FIG9 , as previously described, the first door panel 1114 and the first swing arm 1111 are fixedly connected. In a specific implementation, the two can be relatively fixed by, but not limited to, welding, bonding, or other methods. Furthermore, the first swing arm 1111 can be provided with a plurality of protrusions 11114 on a side facing the first door panel 1114. Accordingly, the first door panel 1114 can be provided with openings 11142 corresponding to the plurality of protrusions 11114. When the first swing arm 1111 is fixedly connected to the first door panel 1114, the protrusions 11114 of the first swing arm 1111 can be disposed within the corresponding openings 11142 of the first door panel 1114. Thus, the mutual cooperation between the protrusions 11114 and the openings 11142 allows the first swing arm 1111 to be assembled and positioned with the first door panel 1114. In addition, the end surface of the protrusion 11114 of the first swing arm 1111 may not exceed the first support surface of the first door panel 1114 to avoid affecting the support effect of the first door panel 1114 on the flexible display. Optionally, the end surface of the protrusion 11114 of the first swing arm 1111 may be coplanar with the first support surface 11141 of the first door panel 1114.

[0089] Next, please refer to Figures 7 and 9. The first door panel 1114 may be provided with a fifth arc-shaped rotating block 11143 on the side opposite to its first supporting surface 11141. The fifth arc-shaped rotating block 11143 may be located on the side of the first door panel 1114 away from the base; accordingly, a fifth arc-shaped groove 11133 may be provided on the side of the first shell bracket 1113 away from the base. The fifth arc-shaped rotating block 11143 of the first door panel 1114 may be accommodated in the fifth arc-shaped groove 11133 and may rotate along the arc-shaped surface of the fifth arc-shaped groove 11133, thereby realizing the rotational connection between the first door panel 1114 and the first shell bracket 1113.

[0090] In addition, in the embodiment of the present application, the first door panels 1114 of the multiple spindle modules can be provided separately or as an integral structure, and this application does not impose any restrictions on this. As shown in Figure 9, an example of an integrated first door panel 1114 of the multiple spindle modules is provided. This design helps to improve the integration of the rotating shaft mechanism and simplify the assembly difficulty of the rotating shaft mechanism.

[0091] As previously mentioned, the first rotating assembly 111 and the second rotating assembly 112 can be separately disposed on opposite sides of the base. In a specific implementation, referring again to FIG. 5 , the second rotating assembly 112 can include a second swing arm 1121, a second support arm 1122, a second housing bracket 1123, and a second door panel 1124. The second door panel 1124 can have a second support surface 11241 for supporting the flexible display screen. The second swing arm 1121 and the second support arm 1122 are disposed on a side of the second door panel 1124 facing away from the flexible display screen. The second swing arm 1121 and the second support arm 1122 are respectively rotatably connected to the base 12, with the rotation axis of the second swing arm 1121 and the rotation axis of the second support arm 1122 being parallel and non-overlapping. The second housing bracket 1123 can be disposed on a side of the second swing arm 1121 and the second support arm 1122 facing away from the second door panel 1124, and can be used for fixed connection to the second housing.

[0092] A second arc-shaped rotating block 11211 may be provided on a side of the second swing arm 1121 close to the base 12. Accordingly, the base 12 may be provided with a second arc-shaped slot 123. The second arc-shaped rotating block 11211 may be rotatably disposed in the second arc-shaped slot 123 to rotationally connect the second swing arm 1121 to the base 12. A fourth arc-shaped rotating block 11213 may be provided on a side of the second swing arm 1121 away from the base 12. Accordingly, the second housing support 1123 may be provided with a fourth arc-shaped slot 11231. The fourth arc-shaped rotating block 11213 may be rotatably disposed in the fourth arc-shaped slot 11231 to rotationally connect the second swing arm 1121 to the second housing support 1123. In addition, a second slide groove 11232 can be further provided on one side of the second shell bracket 1123 facing the second swing arm 1121 and the second support arm 1122. In the direction away from the base 12, the bottom of the second slide groove 11232 gradually tilts toward the second support surface 11241 close to the second door panel 1124. The side of the second support arm 1122 away from the base 12 can be slidably set in the second slide groove 11232, and the side of the second support arm 1122 close to the base 12 can be rotatably connected to the base 12 through a pin shaft.

[0093] A sixth arc-shaped rotating block 11243 may be provided on a side of the second door panel 1124 opposite to its second supporting surface 11241. This sixth arc-shaped rotating block 11243 may be located on a side of the second door panel 1124 away from the base 12. Correspondingly, a sixth arc-shaped groove (not shown) may be provided on a side of the second housing support 1123 away from the base 12. The sixth arc-shaped rotating block 11243 of the second door panel 1124 may be rotatably disposed within this sixth arc-shaped groove to rotatably connect the second door panel 1124 to the second housing support 1123. Furthermore, the second door panels 1124 of the plurality of spindle modules 11 may be provided separately or as a single integral structure, and this is not limited in this application.

[0094] After understanding the structure and connection relationship between the first rotating module 111 and the second rotating module 112 and the base 12 provided in the above embodiment of the present application, the movement process of the rotating shaft mechanism is described below.

[0095] First, refer to Figure 10, which is a schematic diagram of the partial structure of the hinge mechanism 1 provided in an embodiment of the present application in the deployed state. When the hinge mechanism 1 is in the deployed state, the first rotating assembly 111 and the second rotating assembly 112 are located on either side of the base 12, with an angle of approximately 180 degrees between them. At this time, the first supporting surface 11141 of the first door panel 1114 and the second supporting surface 11241 of the second door panel 1124 are arranged coplanar, and the first door panel 1114 and the second door panel 1124 respectively cover at least a portion of the base 12. In addition, the first arc-shaped rotating block of the first swing arm 1111, whose end face is close to the base 12, can extend out of the first arc-shaped groove of the base 12 and be flush with the first support surface 11141; the second arc-shaped rotating block of the second swing arm 1121, whose end face is close to the base 12, can extend out of the second arc-shaped groove of the base 12 and be flush with the second support surface 11241, thereby providing flat support for the flexible display screen together with the first door panel 1114 and the second door panel 1124.

[0096] Referring to FIG11 , FIG11 is a schematic diagram of the partial structure of the pivot mechanism 1 provided in the embodiment of the present application in the intermediate state. During the switching process of the pivot mechanism 1 from the expanded state to the closed state, the first shell bracket 1113 rotates clockwise, and drives the first swing arm 1111 and the first support arm to rotate clockwise synchronously. Based on the rotational connection relationship between the first shell bracket 1113 and the first door panel 1114, and the fixed connection relationship between the first swing arm 1111 and the first door panel 1114, the first door panel 1114 can also rotate clockwise driven by the first shell bracket 1113 and the first swing arm 1111, thereby causing the side of the first door panel 1114 close to the base 12 to rotate in a direction away from the base 12, and exposing the area covered under the first door panel 1114. Partial area of ​​the base 12; correspondingly, the second shell bracket 1123 rotates counterclockwise, and drives the second swing arm 1121 and the second support arm to rotate counterclockwise synchronously. Based on the rotational connection relationship between the second shell bracket 1123 and the second door panel 1124, and the fixed connection relationship between the second swing arm 1121 and the second door panel 1124, the second door panel 1124 can also rotate counterclockwise under the drive of the second shell bracket 1123 and the second swing arm 1121, so that the side of the second door panel 1124 close to the base 12 rotates toward the direction away from the base 12, and exposes a partial area of ​​the base 12 covered under the second door panel 1124.

[0097] Referring to FIG12 , FIG12 is a schematic diagram of the partial structure of the hinge mechanism 1 provided in the embodiment of the present application in the closed state. As the hinge mechanism 1 changes from the intermediate state shown in FIG11 to the closed state shown in FIG12 , the first housing bracket 1113 continues to rotate clockwise and, together with the first swing arm 1111, drives the first door panel 1114 to rotate clockwise. The second housing bracket 1123 continues to rotate counterclockwise and, together with the second swing arm 1121, drives the second door panel 1124 to rotate counterclockwise. When the first door panel 1114 rotates to the first position and the second door panel 1124 rotates to the second position, the first housing bracket 1113 and the second housing bracket 1123 are approximately opposite each other, at which point the hinge mechanism 1 switches to the closed state. In the closed state, the first door panel 1114 and the second door panel 1124 can form an angle (which can be an acute angle) and, together with the base 12, form a roughly teardrop-shaped screen space.

[0098] Please continue to refer to Figure 12. In the embodiment of the present application, the first surface of the base 12 facing the flexible display screen may also be provided with a groove 124. The groove 124 may extend along the axial direction of the hinge mechanism 1. When the hinge mechanism 1 is in a closed state, the first surface of the base 12 is exposed under the cover of the first door panel 1114 and the second door panel 1124. At this time, the groove 124 can be formed as part of the screen space, thereby effectively avoiding the bending area of ​​the flexible display screen, reducing the risk of the flexible display screen being squeezed, and extending the service life. Optionally, the bottom surface of the groove 124 can be an arc-shaped surface, and the arc-shaped surface protrudes away from the screen space. With this design, the screen space formed by the hinge mechanism 1 can better match the shape of the flexible display screen in the bent state, further reducing the risk of the flexible display screen being squeezed.

[0099] It is worth mentioning that when the hinge mechanism 1 includes multiple bases 12, and the multiple bases 12 are respectively arranged in the corresponding receiving grooves of the cover plate, the area between the adjacent receiving grooves on the cover plate can also be provided with grooves of the same depth and shape to connect the grooves on the adjacent bases 12, thereby improving the shape consistency of the screen space in the axial direction of the hinge mechanism 1, so that the hinge mechanism 1 can effectively avoid the bending area of ​​the flexible display screen in the entire axial direction.

[0100] In addition, a first avoidance groove 125 and a second avoidance groove 126 may be respectively provided on both sides of the groove 124, and the first avoidance groove 125 and the second avoidance groove 126 respectively extend along the axial direction of the rotating shaft mechanism 1. The first avoidance groove 125 may be located on the side of the groove 124 close to the first rotating assembly, so as to provide a certain avoidance space for the side of the first door panel 1114 close to the base 12 when the first door panel 1114 rotates, thereby reducing the risk of interference between the first door panel 1114 and the base 12; the second avoidance groove 126 may be located on the side of the groove 124 close to the second rotating assembly, so as to provide a certain avoidance space for the side of the second door panel 1124 close to the base 12 when the second door panel 1124 rotates, thereby reducing the risk of interference between the second door panel 1124 and the base 12.

[0101] Similarly, when the hinge mechanism 1 includes multiple bases 12, and the multiple bases 12 are respectively arranged in the corresponding receiving grooves of the cover plate, the area between adjacent receiving grooves on the cover plate can also be provided with a first avoidance groove and a second avoidance groove of the same depth and shape to reduce the risk of interference between the first door panel 1114 and the second door panel 1124 and the cover plate.

[0102] In addition to the above structure, in some embodiments of the present application, the rotating shaft mechanism may also be provided with other possible structures. For example, as shown in FIG5 , in order to better realize the expansion and closing of the rotating shaft mechanism, the rotating shaft mechanism may also be provided with a synchronization component 113 that can enable the first rotating component 111 and the second rotating component 112 to achieve synchronous rotation. The rotating shaft mechanism may include a synchronization component 113. In this case, the synchronization component 113 may be provided in one of the spindle modules 11 and be transmission-connected to the first rotating component 111 and the second rotating component 112 of the spindle module 11. Alternatively, the rotating shaft mechanism may also include multiple synchronization components 113. In this case, the multiple synchronization components 113 may be respectively provided in different spindle modules 11, and each synchronization component 113 is transmission-connected to the first rotating component 111 and the second rotating component 112 of the corresponding spindle module 11.

[0103] Referring to Figures 13 and 14 , Figure 13 is a schematic diagram of the structure of a synchronization assembly 113 provided in an embodiment of the present application, and Figure 14 is an exploded schematic diagram of the synchronization assembly 113 shown in Figure 13 . In this embodiment, the synchronization assembly 113 may include a first drive arm 1131, a second drive arm 1132, a first slider 1133, and a second slider 1134. One end of the first drive arm 1131 may be rotatably connected to the end of the first swing arm 1111 proximal to the base 12, and the other end of the first drive arm 1131 may be slidably connected to the first slider 1133. One end of the second drive arm 1132 may be rotatably connected to the end of the second swing arm 1121 proximal to the base 12, and the other end of the second drive arm 1132 may be slidably connected to the second slider 1134. The first slider 1133 and the second slider 1134 are each slidably disposed on the base 12 in a first direction. The first slider 1133 and the second slider 1134 may be arranged along the axial direction of the rotating shaft mechanism, and are transmission-connected to each other and capable of sliding toward or away from each other. The first direction may be set at an angle to the axial direction of the rotating shaft mechanism. For example, the angle may be approximately 90 degrees, that is, the first direction may be perpendicular to the axial direction of the rotating shaft mechanism.

[0104] During the process of expanding or closing the hinge mechanism, the first slider 1133 and the second slider 1134 can slide synchronously toward or away from each other, thereby enabling the first drive arm 1131 and the second drive arm 1132 to rotate synchronously. Furthermore, the first swing arm 1111 connected to the first drive arm 1131 and the second swing arm 1121 connected to the second drive arm 1132 can be synchronously rotated toward or away from each other, and the rotation angles of the two swing arms can be consistent. In this way, during the synchronous rotation of the two swing arms, the first and second housings of the electronic device can be driven to rotate synchronously, thereby avoiding the application of instantaneous forces to the flexible display screen fixed to the two housings, which is beneficial for improving the reliability of the flexible display screen. Furthermore, compared to the traditional method of achieving synchronization using multiple transmission gears, the synchronization assembly 113 provided in this embodiment can significantly reduce the space occupied in the thickness direction of the hinge mechanism, thereby facilitating the lightweight and thin design of the electronic device.

[0105] In the embodiment of the present application, the first surface of the base 12 may be provided with a first guide groove 127 and a second guide groove 128. The first guide groove 127 and the second guide groove 128 are spaced apart along the axial direction of the rotating shaft mechanism. The first slider 1133 may be slidably disposed in the first guide groove 127, and the second slider 1134 may be slidably disposed in the second guide groove 128. The first driving arm 1131 and the first slider 1133 may be rotatably connected via a pin, and the second driving arm 1132 and the second slider 1134 may also be rotatably connected via a pin.

[0106] In addition, the first driving arm 1131 can achieve relative rotation with the first swing arm 1111 by being rotatably connected to the first extension arm 11112 of the first swing arm 1111, and the second driving arm 1132 can achieve relative rotation with the second swing arm 1121 by being rotatably connected to the second extension arm 11212 of the second swing arm 1121. The rotation axis of the first driving arm 1131 and the rotation axis of the second driving arm 1132 are respectively arranged along the axial direction of the rotating shaft mechanism. The rotation axis of the first driving arm 1131 and the rotation axis of the first swing arm 1111 may or may not coincide with each other. Similarly, the rotation axis of the second driving arm 1132 and the rotation axis of the second swing arm 1121 may or may not coincide with each other. For example, the first driving arm 1131 and the first extension arm 11112 can be rotatably connected by a pin, and the second driving arm 1132 and the second extension arm 11212 can also be rotatably connected by a pin.

[0107] Continuing with reference to Figures 13 and 14, the synchronization assembly may further include a connecting rod 1135, one end of which may be rotatably connected to the first slider 1133, and the other end of which may be rotatably connected to the second slider 1134, thereby achieving a transmission connection between the first slider 1133 and the second slider 1134 via the connecting rod 1135. In a specific implementation, the connecting rod 1135 may be located on the side of the first slider 1133 and the second slider 1134 facing the flexible display screen, and the ends of the connecting rod 1135 may be respectively provided with a first waist-shaped hole 11351 and a second waist-shaped hole 11352, which extend along the length of the connecting rod. A first hinge shaft 11331 may be provided on the side of the first slider 1133 facing the flexible display screen, and a second hinge shaft 11341 may be provided on the side of the second slider 1134 facing the flexible display screen. The first hinge shaft 11331 may be provided in the first waist-shaped hole 11351 of the connecting rod 1135, and the second hinge shaft 11341 may be provided in the second waist-shaped hole 11352 of the connecting rod 1135. As the first slider 1133 and the second slider 1134 slide, the first hinge shaft 11331 and the second hinge shaft 11341 can jointly drive the connecting rod 1135 to rotate, and as the connecting rod 1135 rotates, the position of the first hinge shaft 11331 in the first waist-shaped hole 11351 and the position of the second hinge shaft 11341 in the second waist-shaped hole 11352 will also change, or it can be understood that the first hinge shaft 11331 slides in the first waist-shaped hole 11351 and the second hinge shaft 11341 slides in the second waist-shaped hole 11352. In this way, the connecting rod 1135 can be used to realize the synchronous sliding of the first slider 1133 and the second slider 1134 toward or away from each other, thereby realizing the synchronous rotation of the first shell and the second shell.

[0108] For example, when the first slider 1133 and the second slider 1134 slide toward each other, the two can jointly drive the connecting rod 1135 to rotate clockwise, the first hinge shaft 11331 slides in the first waist-shaped hole 11351 toward the end close to the second waist-shaped hole 11352, and the second hinge shaft 11341 slides in the second waist-shaped hole 11352 toward the end close to the first waist-shaped hole 11351; when the first slider 1133 and the second slider 1134 slide away from each other, the two can jointly drive the connecting rod 1135 to rotate counterclockwise, the first hinge shaft 11331 slides in the first waist-shaped hole 11351 toward the end away from the second waist-shaped hole 11352, and the second hinge shaft 11341 slides in the second waist-shaped hole 11352 toward the end away from the first waist-shaped hole 11351.

[0109] In addition, in some possible embodiments, the connecting rod 1135 may also be provided with a hinge hole 11353, and accordingly, the first surface of the base may be provided with a third hinge shaft 129, and the third hinge shaft 129 may be rotatably set in the hinge hole 11353 of the connecting rod 1135, thereby rotatably connecting the connecting rod 1135 to the base 12, so as to improve the movement stability of the connecting rod 1135, and thereby improve the transmission connection reliability of the first slider 1133 and the second slider 1134. In the specific setting, the hinge hole 11353 can be located between the first waist-shaped hole 11351 and the second waist-shaped hole 11352, and the distance between the hinge hole 11353 and the center of the first waist-shaped hole 11351 can be equal to the distance between the hinge hole 11353 and the center of the second waist-shaped hole 11352. In this way, the rotation amplitudes at both ends of the connecting rod 1135 can be roughly equal, and the sliding distances of the first slider 1133 and the second slider 1134 can also be roughly equal, thereby improving the rotation synchronization of the first shell and the second shell.

[0110] In some other embodiments, in addition to being connected by a connecting rod 1135, the first slider 1133 and the second slider 1134 can also be connected by gear meshing. For example, referring to FIG15 , FIG15 is a schematic planar structural diagram of another synchronization component 113 provided in an embodiment of the present application. In this embodiment, the synchronization component 113 also includes an intermediate gear 1136. In this case, a first rack 11332 may be provided on the side of the first slider 1133 facing the second slider 1134, and a second rack 11342 may be provided on the side of the second slider 1134 facing the first slider 1133. The intermediate gear 1136 is located between the first slider 1133 and the second slider 1134, and the intermediate gear 1136 is meshed with the first rack 11332 and the second rack 11342, respectively. In this way, the first slider 1133 and the second slider 1134 can achieve synchronous sliding toward or away from each other through the intermediate gear 1136.

[0111] Referring again to Figure 5 , in this embodiment of the present application, to better enable the expansion and closure of the hinge mechanism, the hinge mechanism may also be provided with a damping assembly capable of providing a damping force to the first and second rotating assemblies 111, 112. This allows the first and second rotating assemblies 111, 112 to rotate stably under the action of the damping force, preventing the electronic device from accidentally opening or closing, and allowing the two housings to hover in a set position. The hinge mechanism may include a damping assembly, in which case the damping assembly may be provided corresponding to the first rotating assembly 111 or the second rotating assembly 112 of one of the spindle modules. Alternatively, the hinge mechanism may include multiple damping assemblies, in which case the multiple damping assemblies may be provided corresponding to the first and second rotating assemblies 111, 112 of at least one spindle module 11. For example, Figure 5 illustrates a case where each spindle module 11 includes two damping assemblies. For ease of distinction, the damping assembly provided for the first rotating assembly 111 will be referred to as the first damping assembly 114, and the damping assembly provided for the second rotating assembly 112 will be referred to as the second damping assembly 115. The following mainly takes the configuration of the first damping assembly 114 and the connection relationship between the first damping assembly 114 and the first rotating assembly 111 as an example to illustrate it. The second damping assembly 115 can be configured with reference to the first damping assembly 114 .

[0112] With reference to Figures 16 to 18 , Figure 16 is a schematic structural diagram of the first damping assembly 114 provided in an embodiment of the present application from one perspective, Figure 17 is a schematic structural diagram of the first damping assembly 114 provided in an embodiment of the present application from another perspective, and Figure 18 is a schematic exploded structural diagram of the first damping assembly 114 shown in Figure 16 . In this embodiment of the present application, the first housing bracket 1113 may be provided with a first limiting wall 11134 . The first limiting wall 11134 and the first support arm 1112 may be spaced apart along the axial direction of the rotating shaft mechanism, and the first damping assembly 114 may be disposed between the first limiting wall 11134 and the first support arm 1112 . In a specific implementation, when forming the first limiting wall 11134, the first shell bracket 1113 may be provided with a first limiting groove 11135 arranged along the axial direction of the rotating shaft mechanism, and the first limiting groove 11135 has a first opening 111351 arranged toward the first support arm. At this time, the bottom wall of the first limiting groove 11135 arranged opposite to the side where the first opening 111351 is located can be formed as the first limiting wall 11134.

[0113] The first damping assembly 114 may include a first cam 1141, a second cam 1142 and a first elastic member 1143, wherein the first cam 1141 may be arranged on the side of the first support arm 1112 facing the first limiting wall 11134, and the first cam 1141 has a first cam surface 11411 on the side facing the first limiting wall 11134; the second cam 1142 may be arranged on the side of the first cam 1141 facing away from the first support arm 1112, and the second cam 1142 has a second cam surface 11421 on the side facing the first cam 1141; the first elastic member 1143 may be limited between the second cam 1142 and the first limiting wall 11134, thereby applying elastic force to the second cam 1142, so that the second cam surface 11421 of the second cam 1142 abuts against the first cam surface 11411 of the first cam 1141.

[0114] In some embodiments, the first cam 1141 can be fixed to the side of the first support arm 1112 by bonding, welding, etc. In other embodiments, the first cam 1141 can also be integrally formed with the first support arm 1112, or it can be understood that the first cam surface 11411 can be directly formed on the side of the first support arm 1112 facing the first limiting wall 11134, which helps to simplify the manufacturing and assembly process of the rotating shaft mechanism. In addition, when the first shell bracket 1113 is provided with a first limiting groove 11135, the first elastic member 1143 can be provided in the first limiting groove 11135, and the second cam 1142 can be at least partially provided in the first limiting groove 11135, thereby limiting the moving direction of the second cam 1142 driven by the first elastic member 1143 through the first limiting groove 11135, thereby improving the structural stability and reliability of the first damping assembly 114. At this time, the second cam surface 11421 of the second cam 1142 can abut against the first cam surface 11411 of the first cam 1141 through the first opening 111351.

[0115] Optionally, the first elastic member 1143 may be a spring as shown in Figure 18 . The number of springs can be determined based on the required damping force of the first damping assembly 114 and the space available within the rotating shaft mechanism. Figure 18 illustrates two springs, which can be arranged in parallel between the second cam 1142 and the first limiting wall 11134. Furthermore, the first damping assembly 114 may further include a first guide post 1144 corresponding to each spring. Each first guide post 1144 may be fixed to the side of the second cam 1142 facing away from the first cam 1141 and extend axially along the rotating shaft mechanism. The springs may be sleeved onto the corresponding first guide posts 1144 to reduce the risk of spring displacement during elastic deformation. For example, the first guide posts 1144 and the second cam 1142 may be integrally formed to simplify the manufacturing and assembly of the first damping assembly 114.

[0116] Of course, in some other embodiments, the first elastic member 1143 may also be a spring sheet, and the number of spring sheets may be multiple, and the multiple spring sheets may be stacked between the second cam 1142 and the first limiting wall 11134 .

[0117] Continuing to refer to Figures 16 to 18, in the embodiment of the present application, the first cam surface 11411 and the second cam surface 11421 may both include multiple protrusions and recessed portions. When the inclined surfaces of the protrusions of the two cam surfaces contact each other, a damping force may be generated between the two cam surfaces to prevent the two cam surfaces from continuing to rotate relative to each other. Through the reasonable design of the curved surface profiles of the first cam surface 11411 and the second cam surface 11421, during the closing process of the rotating shaft mechanism, as the first support arm 1112 rotates, the first cam 1141 can push the second cam 1142 toward the first limiting wall 11134, thereby compressing the first elastic member 1143, so that the user can obtain a more obvious operating feel, which is conducive to improving the user's usage experience; during the expansion process of the rotating shaft mechanism, the first elastic member 1143 gradually rebounds in the compressed state and releases the accumulated elastic potential energy, thereby pushing the second cam 1142 to slide toward the first cam 1141, so that the second cam 1142 can apply a torque to the first cam 1141 and the first support arm 1112 to assist their rotation, thereby providing a certain expansion assist for the rotating shaft mechanism, thereby reducing the difficulty of the expansion operation of the rotating shaft mechanism.

[0118] Furthermore, in the embodiment of the present application, through the rational design of the first cam surface 11411 and the second cam surface 11421, the first cam 1141 can be made to hover at a set angle, thereby enabling the first support arm 1112 to hover. When the hinge mechanism is applied to an electronic device, the hovering design of the first support arm 1112 can be used to position the electronic device in some intermediate positions, thereby further improving the user experience.

[0119] The above are only specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A rotating shaft mechanism, characterized in that: The invention comprises a base, a first rotating assembly, a second rotating assembly and a synchronization assembly, wherein the first rotating assembly and the second rotating assembly are respectively arranged on both sides of the base, wherein: The first rotating assembly includes a first swing arm, and the first swing arm is rotatably connected to the base; The second rotating assembly includes a second swing arm, and the second swing arm is rotatably connected to the base; The synchronization component includes a first driving arm, a second driving arm, a first slider, and a second slider. One end of the first driving arm is rotationally connected to one end of the first swing arm close to the base, the other end of the first driving arm is rotationally connected to the first slider, and the first slider is slidably arranged on the base along a first direction; one end of the second driving arm is rotationally connected to one end of the second swing arm close to the base, the other end of the second driving arm is rotationally connected to the second slider, and the second slider is slidably arranged on the base along the first direction; the first slider and the second slider are spaced apart along the axial direction of the rotating shaft mechanism, and the first slider is transmission-connected to the second slider; the first direction is arranged at an angle to the axial direction of the rotating shaft mechanism.

2. The rotating shaft mechanism according to claim 1, characterized in that: The synchronization assembly further includes a connecting rod, and a first waist-shaped hole and a second waist-shaped hole are respectively provided at both ends of the connecting rod, and the first waist-shaped hole and the second waist-shaped hole respectively extend along the length direction of the connecting rod; The first sliding block is provided with a first hinge shaft, and the first hinge shaft is arranged in the first waist-shaped hole; The second sliding block is provided with a second hinge shaft, and the second hinge shaft is arranged in the second waist-shaped hole; As the first slider and the second slider slide, the first hinge shaft and the second hinge shaft jointly drive the connecting rod to rotate, and the first hinge shaft slides in the first waist-shaped hole, and the second hinge shaft slides in the second waist-shaped hole.

3. The rotating shaft mechanism according to claim 2, characterized in that: The connecting rod is also provided with a hinge hole, the hinge hole is located between the first waist-shaped hole and the second waist-shaped hole, and the distance between the hinge hole and the center of the first waist-shaped hole is equal to the distance between the hinge hole and the center of the second waist-shaped hole; The base is provided with a third hinge shaft, and the third hinge shaft is rotatably arranged in the hinge hole.

4. The rotating shaft mechanism according to claim 1, characterized in that: The synchronization assembly also includes an intermediate gear; A first rack is provided on a side of the first slider facing the second slider, and a second rack is provided on a side of the second slider facing the first slider; The intermediate gear is located between the first slider and the second slider, and the intermediate gear is meshed with the first rack and the second rack respectively.

5. The rotating shaft mechanism according to any one of claims 1 to 4, characterized in that: The first rotating assembly further comprises a first supporting arm, a first shell bracket and a first door panel, the first door panel having a first supporting surface for supporting the flexible display screen, the first swing arm and the first supporting arm are arranged on a side of the first door panel opposite to the first supporting surface, the first swing arm is fixedly connected to the first door panel, the first supporting arm is rotatably connected to the base, and the rotation axis of the first supporting arm is parallel to and does not overlap with the rotation axis of the first swing arm; the first shell bracket is rotatably connected to the first swing arm and the first door panel respectively, and the first shell bracket is slidably connected to the first supporting arm; The second rotating assembly includes a second supporting arm, a second shell bracket and a second door panel, the second door panel has a second supporting surface for supporting the flexible display screen, the second swing arm and the second supporting arm are arranged on a side of the second door panel opposite to the second supporting surface, the second swing arm is fixedly connected to the second door panel, the second supporting arm is rotatably connected to the base, and the rotation axis of the second supporting arm is parallel to and does not overlap with the rotation axis of the second swing arm; the second shell bracket is rotatably connected to the second swing arm and the second door panel respectively, and the second shell bracket is slidably connected to the second supporting arm; When the first shell bracket and the second shell bracket rotate towards each other, the first shell bracket drives the first swing arm, the first support arm and the first door panel to rotate around the base, so that the side of the first door panel close to the base moves toward the direction away from the base; when the second shell bracket drives the second swing arm, the second support arm and the second door panel to rotate around the base, the side of the second door panel close to the base moves toward the direction away from the base; when the first door panel rotates to the first position and the second door panel rotates to the second position, the first door panel forms an angle with the second door panel, and the first door panel, the second door panel and the base together form a screen space for accommodating the flexible display screen.

6. The rotating shaft mechanism according to claim 5, characterized in that: The base has a first surface arranged on the same side as the first supporting surface and the second supporting surface, and the first surface of the base is provided with a groove arranged along the axial direction of the rotating shaft mechanism; When the rotating shaft mechanism is in an unfolded state, the first door panel and the second door panel respectively cover at least a portion of the groove; When the rotating shaft mechanism is in a closed state, the first door panel and the second door panel expose the groove, and the groove is formed as follows: A portion of the screen space.

7. The rotating shaft mechanism according to claim 6, characterized in that: The bottom surface of the groove is an arc-shaped surface, and the arc-shaped surface protrudes away from the screen space.

8. The rotating shaft mechanism according to any one of claims 5 to 7, characterized in that: A first arc groove and a second arc groove are respectively provided on both sides of the base; A first arc-shaped rotating block is provided on one side of the first swing arm close to the base, and the first arc-shaped rotating block is arranged in the first arc-shaped groove, so as to realize the rotation connection between the first swing arm and the base; A second arc-shaped rotating block is provided on one side of the second swing arm close to the base, and the second arc-shaped rotating block is arranged in the second arc-shaped groove to realize the rotation connection between the second swing arm and the base.

9. The rotating shaft mechanism according to claim 8, characterized in that: Two ends of the first arc-shaped groove and two ends of the second arc-shaped groove respectively penetrate the base; When the rotating shaft mechanism is in the expanded state, the end surface of the first arc-shaped rotating block close to the base extends out of the first arc-shaped groove and is flush with the first supporting surface, and the end surface of the second arc-shaped rotating block close to the base extends out of the second arc-shaped groove and is flush with the second supporting surface.

10. The rotating shaft mechanism according to any one of claims 5 to 9, characterized in that: The first housing bracket is provided with a third arc-shaped groove, and the end of the first swing arm away from the base has a third arc-shaped rotating block, and the third arc-shaped rotating block is arranged in the third arc-shaped groove, so as to realize the rotation connection between the first swing arm and the first housing bracket; The second shell bracket is provided with a fourth arcuate groove, and the end of the second swing arm away from the base has a fourth arcuate rotating block, and the fourth arcuate rotating block is arranged in the fourth arcuate groove to realize the rotation connection between the second swing arm and the second shell bracket.

11. The rotating shaft mechanism according to any one of claims 5 to 10, characterized in that: The first housing support is provided with a first slide groove, and along the direction away from the base, the groove bottom of the first slide groove gradually tilts toward the direction close to the first supporting surface, and the first supporting arm is slidably provided in the first slide groove; The second shell support is provided with a second slide groove, and along the direction away from the base, the groove bottom of the second slide groove gradually tilts towards the direction close to the second supporting surface, and the second supporting arm is slidably arranged in the second slide groove.

12. The rotating shaft mechanism according to any one of claims 5 to 11, characterized in that: The first housing bracket is provided with a fifth arc-shaped groove, and a fifth arc-shaped rotating block is provided on a surface of the first door panel opposite to the first supporting surface, and the fifth arc-shaped rotating block is arranged in the fifth arc-shaped groove, so as to realize the rotation connection between the first door panel and the first housing bracket; The second shell bracket is provided with a sixth arc groove, and the side of the second door panel opposite to the second supporting surface is provided with a sixth arc rotating block, and the sixth arc rotating block is arranged in the sixth arc groove to realize the rotation connection between the second door panel and the second shell bracket.

13. The rotating shaft mechanism according to any one of claims 1 to 12, characterized in that: The first housing support is provided with a first limiting wall, and the first limiting wall and the first supporting arm are spaced apart from each other along the axial direction of the rotating shaft mechanism; The rotating shaft mechanism also includes a first damping component, which is arranged between the first support arm and the first limiting wall, and includes a first cam, a second cam and a first elastic member; the first cam is arranged on the side of the first support arm facing the first limiting wall; the second cam is arranged on the side of the first cam away from the first support arm, and the cam surface of the second cam abuts against the cam surface of the first cam; the first elastic member is arranged on the side of the second cam away from the first cam, and the first elastic member is limited between the second cam and the first limiting wall.

14. The rotating shaft mechanism according to claim 13, characterized in that: The first housing support is provided with a first limiting groove arranged along the axial direction of the rotating shaft mechanism, the first limiting groove has a first opening arranged toward the first supporting arm, and a bottom wall in the first limiting groove arranged opposite to the first opening forms the first limiting wall; The first elastic member is disposed in the first limiting groove, the second cam is at least partially disposed in the first limiting groove, and the cam surface of the second cam abuts against the cam surface of the first cam through the first opening.

15. The rotating shaft mechanism according to claim 13 or 14, characterized in that: The first cam and the first supporting arm are an integral structure.

16. An electronic device, characterized in that: It comprises a first shell, a second shell, a flexible display screen and a hinge mechanism as claimed in any one of claims 1 to 15, wherein: The first shell and the second shell are respectively arranged on two sides of the rotating shaft mechanism, the first shell is connected to the first rotating assembly, and the second shell is connected to the second rotating assembly; The flexible display screen continuously covers the first shell, the second shell and the hinge mechanism, and the flexible display screen is fixedly connected to the first shell and the second shell.

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