A rotating shaft mechanism and electronic device

Abstract

The application discloses a rotating shaft mechanism and electronic equipment, to improve the opening and closing stability of the rotating shaft mechanism, and reduce the size of the rotating shaft mechanism. The rotating shaft mechanism comprises a main shaft, a first shell fixing frame, a rotating module and a first damping assembly. The rotating module comprises a first swing arm, the first swing arm is rotationally connected with the main shaft, and the first swing arm is slidingly connected with the first shell fixing frame. The first damping assembly comprises a first cam, a second cam, a first elastic piece and a first limiting block. The first cam is arranged on one side of the first swing arm along the axial direction of the rotating shaft mechanism. The second cam is arranged on the side of the first cam away from the first swing arm, and the second cam is slidingly arranged on the first shell fixing frame along the axial direction of the rotating shaft mechanism. The cam surface of the second cam is in abutment with the cam surface of the first cam. The first limiting block is arranged on the side of the second cam away from the first swing arm, and the first limiting block is fixed to the first shell fixing frame. The two ends of the first elastic piece are in abutment with the second cam and the first limiting block respectively.

Description

Technical Field

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

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

[0003] As a key component for foldable electronic devices to achieve closure and unfolding functions, the hinge mechanism not only enables changes in the folded state of the electronic device but also provides sufficient damping force for the entire device under different usage conditions, ensuring reliable support during folding state switching. However, as electronic devices continue to evolve towards thinner and lighter designs, the size of the hinge mechanism also needs to be correspondingly reduced to match the slimmer electronic devices. Currently, the structures in hinge mechanisms that provide damping resistance are often too large, making it difficult to adapt to the trend of thinner and lighter hinge mechanisms and electronic devices. Summary of the Invention

[0004] This application provides a rotating shaft mechanism and an electronic device to improve the opening and closing stability of the rotating shaft mechanism and reduce its size.

[0005] In a first aspect, this application provides a rotating shaft mechanism, which may include a main shaft, a first housing fixing frame, a second housing fixing frame, a rotating module, and a damping module. The first housing fixing frame and the second housing fixing frame may be respectively disposed on both sides of the main shaft. The rotating module may include a first swing arm and a second swing arm. The first swing arm is rotatably connected to the main shaft and slidably connected to the first housing fixing frame; the second swing arm is rotatably connected to the main shaft and slidably connected to the second housing fixing frame. The damping module may include a first damping component and a second damping component. The first damping component includes a first cam, a second cam, a first elastic element, and a first limiting block. The first cam may be disposed on one side of the first swing arm along the axial direction of the rotating shaft mechanism. The second cam is located on the side of the first cam opposite to the first swing arm and is slidably disposed on the first housing fixing frame along the axial direction of the rotating shaft mechanism. The cam surface of the second cam abuts against the cam surface of the first cam. The first limiting block is located on the side of the second cam opposite to the first swing arm and is fixed to the first housing fixing frame. The two ends of the first elastic element are respectively connected to the first... The second cam abuts against the first limiting block; the second damping assembly includes a third cam, a fourth cam, a second limiting member, and a second limiting block. The third cam can be disposed on one side of the second swing arm along the axial direction of the rotating shaft mechanism. The fourth cam can be located on the side of the third cam away from the second swing arm, and the fourth cam is slidably disposed on the second housing fixing frame along the axial direction of the rotating shaft mechanism. The cam surface of the fourth cam abuts against the cam surface of the third cam. The second limiting block is located on the side of the fourth cam away from the second swing arm, and the second limiting block is fixed to the second housing fixing frame. The two ends of the second elastic member abut against the fourth cam and the second limiting block, respectively.

[0006] When the rotating shaft mechanism provided in this application is applied to an electronic device, during the closing process of the electronic device, the first housing fixing frame and the second housing fixing frame move towards each other. The first housing fixing frame drives the first swing arm to rotate clockwise, and the second housing fixing frame drives the second swing arm to rotate counterclockwise. As the first and second swing arms rotate, the first cam can push the second cam towards the first limit block, thereby compressing the first elastic element. Meanwhile, the second swing arm can push the fourth cam towards the second limit block, thereby compressing the second elastic element. This allows the user to obtain a more obvious operating feel when closing the electronic device. During the unfolding of the electronic device, the first elastic element gradually rebounds from its compressed state and releases its accumulated elastic potential energy, thereby pushing the second cam to slide closer to the first cam. The second elastic element gradually rebounds from its compressed state and releases its accumulated elastic potential energy, thereby pushing the fourth cam to slide closer to the third cam. In this way, the second cam can apply a torque to the first cam and the first swing arm to assist their rotation, and the fourth cam can apply a torque to the third cam and the second swing arm to assist their rotation, thereby providing a certain degree of assistance in unfolding the electronic device and reducing the difficulty of unfolding the electronic device.

[0007] Furthermore, in this application, by rationally designing the cam surfaces of the first and second cams, the first cam and the first swing arm can be hovered at a set angle, thus enabling the first rotating component to hover. Similarly, by rationally designing the cam surfaces of the third and fourth cams, the third cam and the second swing arm can be hovered at a set angle, thus enabling the second rotating component to hover. In electronic devices using this rotating mechanism, the hovering design of the first and second rotating components allows the electronic device to be positioned in some intermediate states, thereby improving the user experience.

[0008] In some embodiments, the first housing fixture may be provided with a first limiting groove, which extends axially along the rotating shaft mechanism and has a first opening facing the first swing arm. A first limiting block may be fixed within the first limiting groove, while a second cam may be slidably disposed within the first limiting groove, with the cam surface of the second cam abutting against the cam surface of the first cam through the first opening. This allows the first limiting groove to restrict the movement direction of the second cam under the drive of the first elastic element, and also allows the second cam to overlap or partially overlap with the first housing fixture in the thickness direction of the rotating shaft mechanism, thereby helping to reduce the thickness of the rotating shaft mechanism.

[0009] Similarly, the second housing fixture may be provided with a second limiting groove, which extends axially along the rotating shaft mechanism and has a second opening facing the second swing arm. The second limiting block may be fixed within the second limiting groove, while the fourth cam may be slidably disposed within the second limiting groove, and the cam surface of the fourth cam may abut against the cam surface of the third cam through the second opening. In this way, the second limiting groove can restrict the movement direction of the fourth cam under the drive of the second elastic element, and the fourth cam and the second housing fixture may overlap or partially overlap in the thickness direction of the rotating shaft mechanism, thereby helping to reduce the thickness of the rotating shaft mechanism.

[0010] In some implementations, the groove wall opposite to the first opening can be formed as a first limiting block. This design simplifies the structure of the rotating shaft mechanism and helps improve its structural compactness. Based on the same principle, the groove wall opposite to the second opening can be formed as a second limiting block.

[0011] In some embodiments, the wall of the first limiting groove may be provided with a first guide groove, which extends axially along the rotating shaft mechanism. The second cam may be provided with a first guide block, which is slidably disposed in the first guide groove, thereby using the first guide groove to guide the sliding of the second cam within the first limiting groove. Similarly, the wall of the second limiting groove may be provided with a second guide groove, which extends axially along the rotating shaft mechanism. The fourth cam may be provided with a second guide block, which is slidably disposed in the second guide groove, thereby using the second guide groove to guide the sliding of the fourth cam within the second limiting groove.

[0012] In some embodiments, a first groove may be provided on the side of the second cam facing the first housing bracket, and a second groove may be provided on the first housing bracket corresponding to the first groove. The first elastic element may be located within the space formed by the first and second grooves. With this design, the depths of both the first and second grooves are relatively small, thus appropriately reducing the thickness of the second cam and the first housing bracket, thereby helping to reduce the overall thickness of the rotating shaft mechanism. Similarly, a third groove may be provided on the side of the fourth cam facing the second housing bracket, and a fourth groove may be provided on the second housing bracket corresponding to the third groove. The second elastic element may be located within the space formed by the third and fourth grooves. With this design, the depths of both the third and fourth grooves are relatively small, thus appropriately reducing the thickness of the fourth cam and the second housing bracket, thereby helping to reduce the overall thickness of the rotating shaft mechanism.

[0013] For example, when the first housing fixing frame is provided with a first limiting groove, the second groove can be provided on the bottom wall of the first limiting groove. Similarly, when the second housing fixing frame is provided with a second limiting groove, the fourth groove can be provided on the bottom wall of the second limiting groove.

[0014] In some embodiments, the first housing fixture may also be provided with a first clearance groove, which can communicate with a first guide groove. When the first cam is installed in the first limiting groove, the first clearance groove can avoid the first guide block of the second cam, thereby allowing the first guide block of the second cam to pass through the first clearance groove and smoothly enter the first guide groove, reducing the installation difficulty of the second cam on the first housing fixture. The second housing fixture may also be provided with a second clearance groove, which communicates with the second guide groove. When the fourth cam is installed in the second limiting groove, the second clearance groove can avoid the second guide block of the fourth cam, thereby allowing the second guide block of the fourth cam to smoothly enter the second guide groove, reducing the installation difficulty of the fourth cam on the second housing fixture.

[0015] In some implementations, the first cam can be fixed to the side of the first rocker arm by means of bonding, welding, or riveting. Alternatively, the first cam can also be an integrally formed structure with the first rocker arm. Similarly, the third cam can be fixed to the side of the second rocker arm by means of bonding, welding, or riveting. Alternatively, the third cam can also be an integrally formed structure with the second rocker arm.

[0016] In some implementations, the damping module may have two first damping components, which are symmetrically arranged on both sides of the first swing arm along the axial direction of the rotating shaft mechanism. This balances the forces on both sides of the first swing arm, reducing the risk of jamming and improving the reliability of its movement. Similarly, the damping module may also have two second damping components, which are symmetrically arranged on both sides of the second swing arm along the axial direction of the rotating shaft mechanism. This balances the forces on both sides of the second swing arm, reducing the risk of jamming and improving its reliability.

[0017] In some implementations, the rotating module may further include a first support arm, a second support arm, a first connector, and a second connector. The first support arm is rotatably connected to the second housing frame. The first connector is located between the first swing arm and the first support arm, and is rotatably connected to both the first swing arm and the first support arm. The main shaft is provided with a first track groove, along which the first connector can move to restrict its movement trajectory. The second support arm is rotatably connected to the second housing frame. The second connector is located between the second swing arm and the second support arm, and is rotatably connected to both the second swing arm and the second support arm. The main shaft is also provided with a second track groove, along which the second connector can move to restrict its movement trajectory.

[0018] Based on the aforementioned pivot mechanism of this application, during the process of the electronic device changing from an unfolded state to a closed state, the first housing fixing frame and the second housing fixing frame move towards each other. When the first housing fixing frame drives the first swing arm to rotate clockwise around the main shaft, the first swing arm can drive the first connecting member to move towards the first swing arm in the first track groove of the main shaft, thereby driving the first support arm to rotate counterclockwise around the main shaft. When the second housing fixing frame drives the second swing arm to rotate counterclockwise around the main shaft, the second swing arm can drive the second connecting member to move towards the second swing arm in the second track groove of the main shaft, thereby driving the second support arm to rotate clockwise around the main shaft. During the process of the electronic device changing from a closed state to an unfolded state, the first housing fixing frame and the second housing fixing frame move in opposite directions. When the first housing fixing frame drives the first swing arm to rotate counterclockwise around the main shaft, the first swing arm can drive the first connecting piece to move towards the first support arm within the first track groove of the main shaft, thereby driving the first support arm to rotate clockwise around the main shaft. When the second housing fixing frame drives the second swing arm to rotate clockwise around the main shaft, the second swing arm can drive the second connecting piece to move towards the second support arm within the second track groove of the main shaft, thereby driving the second support arm to rotate counterclockwise around the main shaft. This enables the folding and unfolding functions of the pivot mechanism.

[0019] Some existing pivot mechanisms require increased thickness of the rotating components connected to the main shaft to ensure stability. This results in both the main shaft and the pivot mechanism being very thick and heavy. Forcibly thinning these components weakens the rotating components, significantly impacting the reliability of the pivot mechanism and consequently reducing the lifespan of the electronic device. The pivot mechanism described in this application features a simplified structure. Through the aforementioned structural relationships, the first and second connecting members slide within the main shaft to link the first and second swing arms, the first support arm, and the second support arm on both sides. Therefore, the cross-sections of the first and second connecting members do not need to be very thick to accommodate the first and second track grooves of the main shaft. Furthermore, because the first and second connecting members are connected to the first (second) swing arm and the first (second) support arm respectively, they have sufficient length in the vertical axial direction, providing adequate strength to ensure the reliability of the pivot mechanism. This achieves both a reduction in the thickness of the main shaft and the overall machine while maintaining the reliability of the pivot mechanism, resulting in a lightweight yet reliable pivot mechanism.

[0020] Furthermore, since the first connector can move along a set trajectory within the first track groove, and the second connector can move along a set trajectory within the second track groove, uncontrolled movement of the first and second connectors during the entire folding and unfolding process can be avoided. This prevents random movement of the first and second housing fixing frames, thus ensuring the structural and movement stability of the entire pivot mechanism. In some cases, through reasonable design of the first and second track grooves, the outer tangent of the pivot mechanism can remain constant throughout the folding and unfolding process. This allows the flexible display screen covering the surface of the pivot mechanism to maintain a relatively constant length, effectively preventing compression or stretching of the flexible display screen, thereby improving the structural reliability of the flexible display screen and, consequently, the structural reliability of the electronic device.

[0021] In some embodiments, the spindle includes a base and a cover plate, with the cover plate covering the base. The base has a first arc-shaped groove, and the cover plate includes a first protrusion facing the first arc-shaped groove. The gap between the surface of the first protrusion and the groove surface of the first arc-shaped groove can serve as a first trajectory groove. Additionally, the first connecting member may include a first arc-shaped surface and a second arc-shaped surface. When the electronic device is in an unfolded or closed state, the first arc-shaped surface abuts against the surface of the first protrusion, and the second arc-shaped surface abuts against the groove surface of the first arc-shaped groove. This confines the first connecting member within the first trajectory groove, ensuring a relatively stable position for the first connecting member in both the unfolded and closed states, preventing any play or wobbling, and improving the reliability of the shaft mechanism in both states.

[0022] Additionally, the base may be provided with a third arc-shaped groove, and the cover plate may also include a third protrusion facing the third arc-shaped groove. The gap between the surface of the third protrusion and the groove surface of the third arc-shaped groove serves as a second trajectory groove. The second connector includes a third arc-shaped surface and a fourth arc-shaped surface. When the electronic device is in the unfolded and closed states, the third arc-shaped surface abuts against the surface of the third protrusion, and the fourth arc-shaped surface abuts against the groove surface of the third arc-shaped groove. This allows the surface of the third protrusion and the groove surface of the third arc-shaped groove to confine the second connector within the second trajectory groove, ensuring that the position of the second connector is relatively stable in both the unfolded and closed states, preventing any play or wobbling, thereby improving the reliability of the shaft mechanism in both states.

[0023] In some implementations, during the process of the electronic device transitioning from an unfolded state to a closed state, the first arc-shaped surface abuts against the surface of the first protrusion, while a gap exists between the second arc-shaped surface and the surface of the first arc-shaped groove. Conversely, during the process of the electronic device transitioning from a closed state to an unfolded state, the second arc-shaped surface abuts against the surface of the first arc-shaped groove, while a gap exists between the first arc-shaped surface and the surface of the first protrusion. This results in a different movement trajectory of the first connector within the first track groove during the transition from the unfolded state to the closed state compared to the transition from the closed state to the unfolded state, which improves the flexibility of the hinge mechanism design.

[0024] Furthermore, during the process of the electronic device transitioning from the unfolded state to the closed state, the third arc-shaped surface abuts against the surface of the third protrusion, while a gap exists between the fourth arc-shaped surface and the surface of the third arc-shaped groove. Conversely, during the process of the electronic device transitioning from the closed state to the unfolded state, the fourth arc-shaped surface abuts against the surface of the third arc-shaped groove, while a gap exists between the third arc-shaped surface and the surface of the third protrusion. This results in a different movement trajectory of the second connector within the second track groove during the transition from the unfolded state to the closed state compared to the transition from the closed state to the unfolded state, which improves the flexibility of the rotating shaft mechanism design.

[0025] In some implementations, the movement trajectory of the first connector within the first track groove during the electronic device's transition from an unfolded state to a closed state can be the same as the movement trajectory of the first connector within the first track groove during the electronic device's transition from a closed state to an unfolded state. Specifically, the distance between the surface of the first protrusion and the surface of the first arc-shaped groove is equal at all points. In this case, the first track groove is a groove of equal width. During the transitions of the electronic device from an unfolded state to a closed state and from a closed state to an unfolded state, the first arc-shaped surface abuts against the surface of the first protrusion, and the second arc-shaped surface abuts against the surface of the first arc-shaped groove. This can help improve the stability of the first connector's movement within the first track groove. Similarly, the distance between the surface of the third protrusion and the groove surface of the third arc-shaped groove can also be equal at all points, so that the second track groove is a groove of equal width. In addition, during the process of the electronic device moving from the unfolded state to the closed state and from the closed state to the unfolded state, the third arc-shaped surface abuts against the surface of the third protrusion, and the fourth arc-shaped surface abuts against the groove surface of the third arc-shaped groove, so that the movement trajectory of the second connector in the second track groove during the process of the electronic device moving from the unfolded state to the closed state is the same as the movement trajectory of the second connector in the second track groove during the process of the electronic device moving from the closed state to the unfolded state, thereby improving the stability of the movement of the second connector in the second track groove.

[0026] In some implementations, the first arc surface of the first connector can be a circular arc surface, and the second arc surface can also be a circular arc surface. In this case, the sum of the radius of the first arc surface and the radius of the second arc surface can be equal to the distance between the surface of the first protrusion and the groove surface of the first arc groove, so as to improve the smoothness of the movement of the first connector in the first track groove.

[0027] Similarly, the third arc surface of the second connector can be a circular arc surface, and the fourth arc surface can also be a circular arc surface. In this case, the sum of the radius of the third arc surface and the radius of the fourth arc surface can be equal to the distance between the surface of the third protrusion and the groove surface of the third arc groove, so as to improve the smoothness of the movement of the second connector in the second track groove.

[0028] In some implementations, the first swing arm is rotatably connected to the main shaft. The base is provided with a second arc-shaped groove, and the first swing arm includes a first arc-shaped rotating block housed within the second arc-shaped groove. The first arc-shaped rotating block can slide along the surface of the second arc-shaped groove to achieve the rotatable connection between the first swing arm and the main shaft. This allows the first swing arm and the main shaft to be rotatably connected via a virtual axis, which helps reduce the space occupied by the first swing arm on the main shaft, thus facilitating the miniaturization of the rotating shaft mechanism.

[0029] In addition, the second swing arm is also rotatably connected to the main shaft. The base is also provided with a fourth arc-shaped groove. The second swing arm includes a second arc-shaped rotating block, which is housed in the fourth arc-shaped groove. The second arc-shaped rotating block can slide along the groove surface of the fourth arc-shaped groove to achieve a rotatable connection between the second swing arm and the main shaft. This allows the second swing arm and the main shaft to be rotatably connected via a virtual axis, which helps to reduce the space occupied by the second swing arm on the main shaft, thereby facilitating the miniaturization design of the rotating shaft mechanism.

[0030] To improve the reliability of the connection between the first swing arm and the main shaft, in this application, the cover plate further includes a second protrusion facing the second arc-shaped groove, at least a portion of the first arc-shaped rotating block is located between the second protrusion and the second arc-shaped groove, so as to limit the first swing arm to the main shaft by the second protrusion and the second arc-shaped groove, thereby preventing the first swing arm from coming out of the second arc-shaped groove.

[0031] In addition, the cover plate also includes a fourth protrusion facing the fourth arcuate groove, at least a portion of the second arcuate rotating block is located between the fourth protrusion and the fourth arcuate groove, so as to limit the second swing arm to the main shaft by the fourth protrusion and the fourth arcuate groove, thereby preventing the second swing arm from coming out of the fourth arcuate groove.

[0032] In some implementations, the first connector includes a fifth pivot and a sixth pivot. The first connector is rotatably connected to the first swing arm via the first pivot, and the first connector is rotatably connected to the first support arm via the fifth pivot. The axis of the fifth pivot is parallel to and does not coincide with the axis of the sixth pivot, so that the first swing arm and the first support arm can achieve mutual pulling motion through the first connector.

[0033] The second connecting member includes a seventh rotating shaft and an eighth rotating shaft. The second connecting member is rotatably connected to the second swing arm through the seventh rotating shaft, and the second connecting member is rotatably connected to the second support arm through the eighth rotating shaft. The axis of the seventh rotating shaft is parallel to the axis of the eighth rotating shaft and does not coincide, so that the second swing arm and the second support arm can achieve mutual pulling motion through the second connecting member.

[0034] When the first swing arm and the first connecting member are rotatably connected via the fifth rotating shaft, the first arc-shaped rotating block can be provided with a first mounting groove, the opening of which faces the second arc-shaped groove. The fifth rotating shaft is mounted in the first mounting groove, with a portion of its surface in contact with the groove surface of the first mounting groove, and another portion of its surface in contact with the groove surface of the second arc-shaped groove. By mounting the fifth rotating shaft in the first mounting groove of the first arc-shaped rotating block, the size of the first arc-shaped rotating block can be effectively reduced, without needing to increase the thickness of the first mounting groove due to the size of the first rotating shaft, thus facilitating the miniaturization design of the rotating shaft mechanism.

[0035] In addition, the groove surface of the first mounting groove includes a first arc surface, and the surface of the fifth rotating shaft that contacts the groove surface of the first mounting groove is a second arc surface. The center of the first arc surface coincides with the center of the second arc surface. In this way, the fifth rotating shaft can rotate relative to the first arc rotating block during the process of the first arc rotating block sliding along the groove surface of the second arc groove, so as to realize the rotational connection between the first swing arm and the fifth rotating shaft.

[0036] The groove surface of the second arc-shaped groove is the third arc surface, and the surface of the fifth rotating shaft that contacts the groove surface of the second arc-shaped groove is the fourth arc surface. The center of the third arc surface coincides with the center of the fourth arc surface. In this way, while the fifth rotating shaft slides along the groove surface of the second arc-shaped groove with the first arc-shaped rotating block, the fifth rotating shaft can also rotate relative to the first arc-shaped rotating block and the second arc-shaped groove, thereby facilitating the movement of the first connecting piece relative to the main shaft.

[0037] Similarly, the second arc-shaped rotating block is provided with a second mounting groove, the opening of which faces the fourth arc-shaped groove. The seventh rotating shaft is mounted in the second mounting groove, with a portion of its surface in contact with the groove surface of the second mounting groove, and another portion of its surface in contact with the groove surface of the fourth arc-shaped groove. By mounting the seventh rotating shaft in the second mounting groove of the second arc-shaped rotating block, the size of the second arc-shaped rotating block can be effectively reduced, without having to increase the thickness of the second mounting groove due to the size of the third rotating shaft, thus facilitating the miniaturization design of the rotating shaft mechanism.

[0038] The second mounting groove may include a fifth arc surface, and the surface of the seventh rotating shaft that contacts the groove surface of the second mounting groove is a sixth arc surface, with the center of the fifth arc surface coinciding with the center of the sixth arc surface. Additionally, the groove surface of the fourth arc groove is a seventh arc surface, and the surface of the seventh rotating shaft that contacts the groove surface of the fourth arc groove may be an eighth arc surface, with the center of the seventh arc surface coinciding with the center of the eighth arc surface. Thus, while the seventh rotating shaft slides along the groove surface of the fourth arc groove with the second arc-shaped rotating block, it can also rotate relative to the second arc-shaped rotating block and the fourth arc groove, thereby facilitating the movement of the second connecting member relative to the main shaft.

[0039] Secondly, this application also provides an electronic device comprising a first housing, a second housing, a flexible display screen, and a rotating mechanism as described in the first aspect. The first and second housings are respectively disposed on opposite sides of the rotating mechanism. A first housing fixing frame is fixedly connected to the first housing, and a second housing fixing frame is fixedly connected to the second housing. The flexible display screen continuously covers the first housing, the second housing, and the rotating mechanism, and is fixedly connected to both the first and second housings. When the electronic device is in its unfolded state, the rotating mechanism, the first housing, and the second housing together provide flat support for the flexible display screen, thereby ensuring the integrity of the electronic device's shape in this unfolded state. During the process of the electronic device moving from the unfolded state to the closed state, the two housings rotate synchronously towards each other, causing the flexible display screen to rotate; and during the process of the electronic device moving from the closed state to the unfolded state, the two housings rotate synchronously away from each other, causing the flexible display screen to rotate. This effectively prevents deformation of the flexible display screen, reducing the risk of damage to the flexible display screen. Attached Figure Description

[0040] Figure 1 A schematic diagram of the structure of the electronic device provided in the embodiment of this application when it is in a closed state;

[0041] Figure 2a A schematic diagram of the electronic device provided in the embodiment of this application when it is in an unfolded state;

[0042] Figure 2b Another structural schematic diagram of the electronic device provided in the embodiment of this application when it is in the unfolded state;

[0043] Figure 3 for Figure 2b A partial structural diagram of the rotating shaft mechanism of an electronic device in the image;

[0044] Figure 4 for Figure 3 Exploded view of the structure shown;

[0045] Figure 5A cross-sectional view of the first connecting member of the rotating shaft mechanism provided in the embodiment of this application when the electronic device is in the unfolded state;

[0046] Figure 6 A schematic diagram of the structure of a spindle provided in an embodiment of this application;

[0047] Figure 7 for Figure 6 A schematic diagram of one structure of the base of the spindle shown;

[0048] Figure 8 for Figure 6 A schematic diagram of one structure of the cover plate of the spindle shown;

[0049] Figure 9 A cross-sectional view of the first connecting member of the rotating shaft mechanism provided in the embodiment of this application when the electronic device is in a closed state;

[0050] Figure 10 A schematic diagram of the structure of the first connector provided in an embodiment of this application;

[0051] Figure 11 A schematic diagram of the assembly structure of the first connector and the spindle provided in an embodiment of this application;

[0052] Figure 12 for Figure 3 A cross-sectional view of the structure shown in the figure;

[0053] Figure 13 A cross-sectional view of the first swing arm of the rotating shaft mechanism provided in the embodiment of this application when the electronic device is in a closed state;

[0054] Figure 14 This is a schematic diagram of the structure of the first rotating assembly provided in an embodiment of this application;

[0055] Figure 15 A schematic diagram of the structure of the first swing arm provided in an embodiment of this application;

[0056] Figure 16 A schematic diagram of the motion mechanism of the rotating shaft mechanism provided in the embodiments of this application;

[0057] Figure 17 A partial structural schematic diagram of the rotating shaft mechanism provided in the embodiments of this application;

[0058] Figure 18 A schematic diagram of another partial structure of the rotating shaft mechanism provided in an embodiment of this application;

[0059] Figure 19 This is a partial structural schematic diagram of the damping module provided in the embodiments of this application;

[0060] Figure 20This is a partial exploded structural diagram of the damping module provided in the embodiments of this application;

[0061] Figure 21 A partial structural schematic diagram of another damping module provided in an embodiment of this application.

[0062] Figure label:

[0063] 1-Rotating shaft mechanism; 1a-Bearing surface; 1b-Third outer surface; 101-Rotating module; 1011-First rotating assembly;

[0064] 10111-First swing arm; 101111-First arc-shaped rotating block; 1011111-First recess; 1011112-First mounting groove;

[0065] 10111121 - First arc surface; 10112 - First support arm; 10113 - First connector; 101131 - First pivot;

[0066] 1011311 - Second arc surface; 1011312 - Fourth arc surface; 101132 - Second pivot; 101133 - First arc surface;

[0067] 101134 - Second arc-shaped surface;

[0068] 1012 - Second rotating assembly; 10121 - Second swing arm; 101211 - Second arc-shaped rotating block; 1012111 - Second recess;

[0069] 1012112 - Second mounting slot; 10121121 - Fifth arc surface; 10122 - Second support arm; 10123 - Second connector;

[0070] 101231 - Third pivot; 1012311 - Sixth arc surface; 1012312 - Eighth arc surface; 101232 - Fourth pivot;

[0071] 101233 - Third arc surface; 101234 - Fourth arc surface;

[0072] 1013-First housing fixing bracket; 10131-First sliding groove; 10132-First mounting part; 10133-First limiting groove;

[0073] 101331 - First opening; 101332 - First guide groove; 10134 - First clearance groove; 10135 - Second groove;

[0074] 1014-Second housing fixing bracket; 10141-Second slide groove; 10142-Second mounting part;

[0075] 102-Main shaft; 1021-Base; 10211-First arc-shaped groove; 102111-Groove surface of the first arc-shaped groove;

[0076] 10212 - Second arc-shaped groove; 102121 - Third arc surface; 10213 - Third arc-shaped groove; 102131 - Groove surface of the third arc-shaped groove;

[0077] 10214 - Fourth arc-shaped groove; 102141 - Seventh circular arc surface;

[0078] 1022 - Cover plate; 10221 - First protrusion; 102211 - Surface of the first protrusion; 10222 - Second protrusion;

[0079] 102221 - Surface of the second protrusion; 10223 - First insertion part; 10224 - Third protrusion;

[0080] 102241 - Surface of the third protrusion; 10225 - Fourth protrusion; 102251 - Surface of the fourth protrusion;

[0081] 1023 - First track slot; 1024 - Second track slot;

[0082] 103-Damping module; 1031-First damping assembly; 10311-First cam; 103111-First cam surface;

[0083] 10312 - Second cam; 103121 - Second cam surface; 103122 - First guide block; 10313 - First elastic element;

[0084] 10314 - First limiting block; 10315 - First guide post; 1032 - Second damping assembly; 10321 - Third cam;

[0085] 103211 - Third cam surface; 10322 - Fourth cam; 103221 - Fourth cam surface; 103222 - Second guide block;

[0086] 10323 - Second elastic element; 10324 - Second limiting block; 10325 - Second guide post;

[0087] 2-First housing; 2a-First support surface; 2b-First exterior surface;

[0088] 3-Second housing; 3a-Second support surface; 3b-Second exterior surface. Detailed Implementation

[0089] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein. The same reference numerals in the figures denote the same or similar structures, and therefore repeated descriptions of them will be omitted. The terms expressing position and direction described in the embodiments of this application are illustrative based on the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this application. The accompanying drawings of the embodiments of this application are only for illustrating relative positional relationships and do not represent actual scale.

[0090] It should be noted that specific details are set forth in the following description to facilitate understanding of this application. However, the embodiments of this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the embodiments of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0091] To facilitate understanding of the hinge mechanism provided in this application embodiment, its application scenarios are first described below. This hinge mechanism can be applied to, but is not limited to, foldable electronic devices such as mobile phones, personal digital assistants (PDAs), laptops, or tablets. In this application, the electronic device can be either an outward-folding or inward-folding device. In an outward-folding electronic device, the flexible display screen remains on the outside of the device during the transition from an unfolded to a closed state. In an inward-folding electronic device, the flexible display screen is located on the inside of the device when it is in the closed state. In this application embodiment, the application of the hinge mechanism in an electronic device is explained using an outward-folding electronic device as an example. (Refer to...) Figure 1 , Figure 1 This is a schematic diagram of the electronic device provided in this application when it is in a closed state. In addition to the pivot mechanism 1, the electronic device may also include two housings and a flexible display screen. For ease of description, the two housings can be named the first housing 2 and the second housing 3, respectively. The first housing 2 and the second housing 3 are located on opposite sides of the pivot mechanism 1 and can rotate around the pivot mechanism 1. During use, the electronic device can be closed and opened according to different usage scenarios.

[0092] Figure 1 This demonstrates the relative positional relationship between the pivot mechanism 1 and the two housings when the electronic device is in the closed state. In this state, the first surface of the pivot mechanism 1, the first surface of the first housing, and the first surface of the second housing can collectively function as a flexible display screen. Figure 1 The support surface (not shown in the image). Wherein, Figure 1The flexible display screen is omitted in this document. The first surface of the pivot mechanism 1 refers to the surface of the pivot mechanism 1 facing the flexible display screen, the first surface of the first housing 2 refers to the surface of the first housing 2 facing the flexible display screen, and the first surface of the second housing 3 refers to the surface of the second housing 3 facing the flexible display screen. For ease of description, in this application, the first surface of the pivot mechanism 1 can be defined as the bearing surface 1a of the pivot mechanism 1, the first surface of the first housing 2 can be defined as the first support surface 2a, and the first surface of the second housing 3 can be defined as the second support surface 3a.

[0093] For reference Figure 2a , Figure 2a A schematic diagram of an electronic device in its unfolded state is shown, and Figure 2a The structure of the first support surface 2a of the first housing 2 and the second support surface 3a of the second housing 3 is shown. In this unfolded state, the bearing surface 1a of the rotating shaft mechanism 1, the first support surface 2a of the first housing 2, and the second support surface 3a of the second housing 3 can be connected to form a flat support surface.

[0094] Based on this, the flexible display screen can continuously cover the bearing surface 1a of the pivot mechanism 1, the first support surface 2a of the first housing 2, and the second support surface 3a of the second housing 3. The pivot mechanism 1 and the bendable portion of the flexible display screen are correspondingly arranged, and the flexible display screen can be fixedly connected to the first support surface 2a of the first housing 2 and the second support surface 3a of the second housing 3. The connection method can be, but is not limited to, adhesive bonding. In this way, when the electronic device is in a position such as Figure 2a When in the unfolded state shown, the pivot mechanism 1, the first housing 2, and the second housing 3 can provide flat support for the flexible display screen.

[0095] Additionally, you can refer to Figure 2b , Figure 2b This is another structural schematic diagram of the electronic device provided in the embodiments of this application when it is in an unfolded state. Figure 2b The diagram shows the structure of the second surface of the pivot mechanism 1, the second surface of the first housing 2, and the second surface of the second housing 3. The second surface of the pivot mechanism 1 refers to the surface of the pivot mechanism 1 facing away from the flexible display screen; the second surface of the first housing 2 refers to the surface of the first housing 2 facing away from the flexible display screen; and the second surface of the second housing 3 refers to the surface of the second housing 3 facing away from the flexible display screen. Thus, the first and second surfaces of the pivot mechanism 1, the first and second surfaces of the first housing 2, and the second surface of the second housing 3 are arranged opposite to each other.

[0096] In this embodiment, the second surface of the pivot mechanism 1, the second surface of the first housing 2, and the second surface of the second housing 3 can serve as the exterior surfaces of the electronic device. For ease of description, the second surface of the first housing 2 can be defined as the first exterior surface 2b, the second surface of the second housing 3 as the second exterior surface 3b, and the second surface of the pivot mechanism 1 as the third exterior surface 1b. It is understood that for an outward-folding electronic device, its exterior surface is exposed on the outside of the electronic device when it is in the unfolded state; while when the electronic device is in the closed state, its exterior surface is located on the inside of the electronic device. In this application, the first housing 2 and the second housing 3 are... Figure 2a or Figure 2b The unfolded state shown Figure 1 The closed state shown, or by Figure 1 The closed state shown Figure 2a or Figure 2b During the relative rotation of the unfolded state shown, the flexible display screen can be bent or flattened along with the first housing 2 and the second housing 3. Furthermore, it can be understood that the electronic device is composed of… Figure 2a or Figure 2b The unfolded state shown Figure 1 The closed state shown, or by Figure 1 The closed state shown Figure 2a or Figure 2b The unfolded state shown is the process of the first housing 2 and the second housing 3 rotating around the pivot mechanism 1. The pivot mechanism 1, as a key functional component in foldable electronic devices, is designed to correspond to the foldable portion of the flexible display screen; therefore, it plays a crucial role in... Figure 2a or Figure 2b The unfolded state shown and in Figure 1 The closed state shown plays an important role in supporting the foldable part of the flexible display screen.

[0097] Reference Figure 3 , Figure 3 for Figure 2b The diagram shows a partial structural schematic of the rotating shaft mechanism 1 of the electronic device. In this application, the rotating shaft mechanism 1 may include a rotating module 101. The number of rotating modules 101 in the rotating shaft mechanism 1 is not limited in this application; the rotating shaft mechanism 1 may include one rotating module 101 or multiple rotating modules 101. When the rotating shaft mechanism 1 includes multiple rotating modules 101, these multiple rotating modules 101 may be arranged at intervals along the axial direction of the rotating shaft mechanism 1. In this application, the axial direction of the rotating shaft mechanism 1 is... Figure 2bThe first housing 2 and the second housing 3 shown extend along the axis of rotation about the rotating shaft mechanism 1. It can be understood that the first housing 2 and the second housing 3 are rotatably connected by multiple rotating modules 101, which can effectively improve the stability of the rotation of the first housing 2 and the second housing 3 of the electronic device relative to the rotating shaft mechanism 1.

[0098] Reference Figure 4 , Figure 4 for Figure 3 An exploded view of the rotating shaft mechanism 1 shown. The rotating module 101 may include a first rotating assembly 1011 and a second rotating assembly 1012. Additionally, as... Figure 4 As shown, the rotating shaft mechanism 1 may also include a main shaft 102, which can serve as a support component for the first rotating assembly 1011 and the second rotating assembly 1012. The first rotating assembly 1011 and the second rotating assembly 1012 can rotate relative to the main shaft respectively.

[0099] It is worth mentioning that, in the embodiments of this application, when there are multiple rotating modules 101, the first rotating component 1011 and the second rotating component 1012 of the multiple rotating modules 101 can all use the same main shaft 102 as the bearing component, so as to improve the integration level of the rotating shaft mechanism 1. In some other possible embodiments of this application, the rotating shaft mechanism 1 can be provided with a main shaft 102 for each rotating module 101, so that the first rotating component 1011 and the second rotating component 1012 of each rotating module 101 use the corresponding main shaft 102 as the bearing component.

[0100] Furthermore, to better realize the unfolding and folding of the hinge mechanism 1, the hinge mechanism 1 of this application embodiment also provides a damping module that can provide damping force to the aforementioned rotating module, so that the first rotating component and the second rotating component can rotate stably under the action of damping force, thereby avoiding accidental opening and closing of the electronic device and realizing the suspension of the two housings at a set position. In addition, by setting the damping module, the user can also have a more obvious operating feel during the unfolding or closing of the electronic device, thereby improving the user experience.

[0101] To present the damping module of this application more clearly and completely, please refer to the following before describing the specific configuration of the damping module in the embodiments of this application: Figures 4 to 17 The diagram illustrates a specific implementation of a hinge mechanism. This mechanism not only provides damping but also smoothly supports the flexible display screen, ensuring uniform stress on the bent portion of the screen during the electronic device's intermediate state and during unfolding or folding. Furthermore, this hinge mechanism allows the flexible display screen to maintain a constant length throughout the entire unfolding or folding process, thereby guaranteeing its reliability.

[0102] Next, an exemplary design of the rotating shaft mechanism will be described in detail.

[0103] You can continue to refer to Figure 4 In this embodiment, the first rotating assembly 1011 may include a first swing arm 10111, a first support arm 10112, and a first connecting member 10113. The first connecting member 10113 is located between the first swing arm 10111 and the first support arm 10112. The first connecting member 10113 is rotatably connected to the first swing arm 10111 and rotatably connected to the first support arm 10112, thereby allowing the first swing arm 10111 and the first support arm 10112 to perform mutual pulling motion through the first connecting member 10113. Therefore, it can be understood that the movement trajectory of the first connecting member 10113 plays a crucial role in the movement trajectory of the first rotating assembly 1011.

[0104] In this application, the first connecting member 10113 is movable relative to the main shaft 102. For specific implementation, refer to... Figure 5 , Figure 5 This is a cross-sectional view of the first connector 10113 of the rotating shaft mechanism 1 provided in this application embodiment when the electronic device is in the unfolded state. The main shaft 102 may be provided with a first track groove 1023, and the first connector 10113 may move along the first track groove 1023, thereby restricting the movement trajectory of the first connector 10113.

[0105] Reference Figure 6 , Figure 6 This is a schematic diagram of a spindle 102 provided in an embodiment of this application. The spindle 102 may include a base 1021 and a cover plate 1022. The cover plate 1022 covers the base 1021, and the outer surface of the cover plate 1022 can serve as the third outer surface 1b of the rotating shaft mechanism 1. Referring to... Figure 7 , Figure 7 for Figure 6 This is a schematic diagram of a structure of the base 1021 of the spindle 102. The base 1021 may be provided with a first arc-shaped groove 10211, which is also shown in the diagram. Figure 5 and Figure 7 The first connector 10113 is accommodated in the first arc-shaped groove 10211, and the first connector 10113 is slidable along the groove surface 102111 of the first arc-shaped groove. Additionally, refer to... Figure 8 , Figure 8 for Figure 6 A schematic diagram of a structure of the cover plate 1022 of the main shaft 102 is shown, and Figure 8 The structure of the cover plate 1022 facing the base 1021 is used to illustrate this. The cover plate 1022 includes a first protrusion 10221, such as... Figure 5As shown, the first protrusion 10221 can be disposed toward the first arc-shaped groove 10211, and there is a gap between the surface 102211 of the first protrusion and the groove surface 102111 of the first arc-shaped groove, which serves as the first trajectory groove 1023.

[0106] Figure 9 The cross-sectional view of the rotating shaft mechanism 1 provided in this application embodiment at the first connecting member 10113 when the electronic device is in the closed state can also be referred to. Figure 5 and Figure 9 During the process of the electronic device moving from the unfolded state to the closed state, the first connector 10113 can move toward the first swing arm 10111 within the first track groove 1023, and during the process of moving from the closed state to the unfolded state, the first connector 10113 can move toward the first support arm 10112 within the first track groove 1023, thereby enabling the first connector 10113 to move relative to the main shaft 102 according to a set trajectory.

[0107] Refer to together Figure 5 and Figure 9 It can be seen that during the process of the electronic device moving from an unfolded state to a closed state, or from a closed state to an unfolded state, the first swing arm 10111 and the first support arm 10112 can rotate around the main shaft 102. Furthermore, because the first swing arm 10111 and the first support arm 10112 move in opposite directions via the first connector 10113, the first connector 10113 can also rotate relative to the surface 102211 of the first protrusion and the groove surface 102111 of the first arcuate groove during its movement within the first track groove 1023, thereby improving the smoothness of the movement of the first rotating assembly 1011.

[0108] Reference Figure 10 , Figure 10 This is a schematic diagram of a first connector 10113 provided in an embodiment of this application. In this application, the first connector 10113 may include a first arcuate surface 101133 and a second arcuate surface 101134. To enable rotation of the first connector 10113 relative to the surface 102211 of the first protrusion and the groove surface 102111 of the first arcuate groove, the first arcuate surface 101133 and the second arcuate surface 101134 may be circular arc surfaces, and the center of the first arcuate surface 101133 coincides with the center of the second arcuate surface 101134. The radii of the first arcuate surface 101133 and the second arcuate surface 101134 may be equal or unequal, and are not limited thereto in this application. In addition, considering design tolerances, the first arc surface 101133 and the second arc surface 101134 can also be other possible arc surfaces such as elliptical arc surfaces, as long as the rotation of the first connector 10113 relative to the surface 102211 of the first protrusion and the groove surface 102111 of the first arc groove can be realized.

[0109] You can continue to refer to Figure 5 and Figure 9 When electronic devices are in such a state Figure 5 The unfolded state shown and as Figure 9 In the closed state shown, the first arcuate surface 101133 of the first connector 10113 can abut against the surface 102211 of the first protrusion, and the second arcuate surface 101134 abuts against the groove surface 102111 of the first arcuate groove. This allows the surface 102211 of the first protrusion and the groove surface 102111 of the first arcuate groove to confine the first connector 10113 to the first track groove 1023, so that the position of the first connector 10113 is relatively stable in the open and closed states of the rotating shaft mechanism 1, and no misalignment or wobbling will occur, thereby improving the reliability of the rotating shaft mechanism 1 in the above two states.

[0110] In this application, electronic devices may be placed in such a position as Figure 5 In the unfolded state shown, the distance between the point where the surface 102211 of the first protrusion abuts against the first arcuate surface 101133 and the point where the groove surface 102111 of the first arcuate groove abuts against the second arcuate surface 101134 is denoted as d1. The electronic device and the point where it is in the unfolded state are... Figure 9 In the closed state shown, the distance between the point where the surface 102211 of the first protrusion abuts against the first arcuate surface 101133 and the point where the groove surface 102111 of the first arcuate groove abuts against the second arcuate surface 101134 is denoted as d2. Since the first arcuate surface 101133 of the first connector 10113 can abut against the surface 102211 of the first protrusion when the electronic device is in the unfolded and closed states, and the second arcuate surface 101134 abuts against the groove surface 102111 of the first arcuate groove, when both the first arcuate surface 101133 and the second arcuate surface 101134 are arcuate surfaces, it can be concluded that d1 = d2.

[0111] In this application, the specific configuration of the surface 102211 of the first protrusion and the groove surface 102111 of the first arc-shaped groove is not limited. For example, the surface 102211 of the first protrusion and the groove surface 102111 of the first arc-shaped groove can both be arc-shaped surfaces. In addition, the center of the surface 102211 of the first protrusion coincides with the center of the groove surface 102111 of the first arc-shaped groove. In some other possible embodiments of this application, the surface 102211 of the first protrusion and the groove surface 102111 of the first arc-shaped groove can both be set as planes, so that the first trajectory groove 1023 is a straight groove; or the surface 102211 of the first protrusion and the groove surface 102111 of the first arc-shaped groove can also be other curved surfaces, so that the first trajectory groove 1023 is a curved groove of any shape. All of these should be understood to fall within the protection scope of this application.

[0112] You can continue to refer to Figure 5 In this application, the distance between the surface 102211 of the first protrusion and the groove surface 102111 of the first arc-shaped groove can be made equal at all points, so the first trajectory groove 1023 is a groove of equal width. At this time, during the process of the electronic device moving from the unfolded state to the closed state and from the closed state to the unfolded state, the surface 102211 of the first protrusion and the first arc-shaped surface 101133, as well as the groove surface 102111 of the first arc-shaped groove and the second arc-shaped surface 101134, are always in contact. This ensures that the movement trajectory of the first connector 10113 is the same during the process of the electronic device moving from the unfolded state to the closed state and from the closed state to the unfolded state. This can help improve the stability of the movement of the first connector 10113, thereby improving the movement stability of the first rotating assembly 1011.

[0113] Reference Figure 11 , Figure 11 This is a schematic diagram of the assembly structure of the first connector 10113 and the spindle 102 provided in an embodiment of this application. In this application, when the first track groove 1023 is a groove of equal width, and the first arc surface 101133 and the second arc surface 101134 are arc surfaces, the sum of the radius R1 of the first arc surface 101133 and the radius R2 of the second arc surface 101134 is equal to the distance D between the surface 102211 of the first protrusion and the groove surface 102111 of the first arc groove. In addition, considering the smoothness of the movement of the first connector 10113 within the first track groove 1023, a certain design gap can be maintained between the surface 102211 of the first arc surface 101133 and the surface 102211 of the first protrusion, and / or between the second arc surface 101134 and the groove surface 102111 of the first arc groove.

[0114] In some other possible embodiments of this application, the movement trajectory of the first connector 10113 during the process of the electronic device changing from an unfolded state to a closed state may be different from the movement trajectory of the first connector 10113 during the process of the electronic device changing from a closed state to an unfolded state. Specifically, during the process of the electronic device changing from an unfolded state to a closed state, the first arc-shaped surface 101133 abuts against the surface 102211 of the first protrusion, and there is a gap between the second arc-shaped surface 101134 and the groove surface 102111 of the first arc-shaped groove. Furthermore, during the process of the electronic device changing from an unfolded state to a closed state, the second arc-shaped surface 101134 abuts against the groove surface 102111 of the first arc-shaped groove, and there is a gap between the first arc-shaped surface 101133 and the surface 102211 of the first protrusion. In this embodiment, the gaps between the surface 102211 of the first protrusion and the groove surface 102111 of the first arc-shaped groove may be unequal, thus the first trajectory groove 1023 may be a non-uniform width groove.

[0115] As described above, in this application, the first swing arm 10111 is rotatably connected to the main shaft 102. This rotatable connection can be achieved via a virtual axis, which helps reduce the space occupied by the first swing arm 10111 on the main shaft 102, thereby reducing the size of the rotating module 101 and facilitating the miniaturization of the rotating shaft mechanism 1. Furthermore, it is understood that for outward-folding electronic devices, when the first swing arm 10111 is rotatably connected to the main shaft 102 via a virtual axis, the axis of rotation of the first swing arm 10111 around the main shaft 102 is located on the side of the main shaft 102 opposite to the flexible display screen.

[0116] It is worth noting that, in this application, the virtual axis refers to the axis of an arc-shaped structure, from which two rotatably connected components can rotate relative to the virtual axis, and the position of the virtual axis remains fixed as the two rotatably connected components rotate relative to each other. For example, as shown... Figure 12 As shown, Figure 12 for Figure 3 The diagram shows a cross-sectional view (AA) of the structure. A first arc-shaped rotating block 10111 may be provided at the end of the first swing arm 10111 facing the base 1021. Additionally, refer to... Figure 7 The base 1021 may be provided with a second arc-shaped groove 10212. The first arc-shaped rotating block 101111 can be accommodated in the second arc-shaped groove 10212, and the first arc-shaped rotating block 101111 can slide along the groove surface of the second arc-shaped groove 10212. Thus, the first swing arm 10111 rotates around the main shaft 102 by sliding the first arc-shaped rotating block 101111 along the arc surface of the second arc-shaped groove 10212. Furthermore, in this application, the first arc-shaped rotating block 101111 may be, but is not limited to, a circular arc-shaped rotating block, and the second arc-shaped groove 10212 may be, but is not limited to, a circular arc groove. It is understandable that when the first arc-shaped rotating block 101111 is an arc-shaped rotating block, its surface that contacts the groove surface of the second arc-shaped groove 10212 can be an arc surface, and the groove surface of the second arc-shaped groove 10212 is also an arc surface, and the centers of the two arc surfaces coincide.

[0117] Can be referred to together Figure 8 and Figure 12 The cover plate 1022 may include a second protrusion 10222 disposed toward the second arcuate groove 10212. At least a portion of the first arcuate rotating block 101111 is located between the second protrusion 10222 and the second arcuate groove 10212, and the first arcuate rotating block 101111 may contact the surface 102221 of the second protrusion, thereby limiting the first arcuate rotating block 101111 between the cover plate 1022 and the base 1021, which can effectively improve the stability of the first arcuate rotating block 101111's rotation relative to the base 1021.

[0118] It is worth mentioning that when the groove surface of the second arc-shaped groove 10212 is an arc surface, the part of the surface 102221 of the second protrusion that contacts the first arc-shaped rotating block 101111 can also be an arc surface, and the centers of the two arc surfaces coincide. In addition, the surface of the first arc-shaped rotating block 101111 facing the second protrusion 10222 can be either a plane or an arc surface, as long as the first arc-shaped rotating block 101111 can rotate relative to the second protrusion 10222.

[0119] For reference Figure 13 , Figure 13 This is a cross-sectional view of the first swing arm 10111 of the rotating shaft mechanism 1 provided in this application embodiment when the electronic device is in a closed state. In this application, the first arc-shaped rotating block 101111 may also be provided with a first recess 1011111, the opening of which faces the cover plate 1022. In addition, a first insertion portion 10223 may be provided at the end of the cover plate 1022 facing the first swing arm 10111. Then, in the closed state, the first insertion portion 10223 can be inserted into the first recess 1011111, and at least a portion of the surface of the first insertion portion 10223 facing the second arc-shaped groove 10212 abuts against the surface of the first recess 1011111. This restricts the rotation position of the first arc-shaped rotating block 101111 and prevents the first arc-shaped rotating block 101111 from coming out of the second arc-shaped groove 10212, thereby improving the reliability of the connection between the first swing arm 10111 and the base 1021 and improving the structural reliability of the entire rotating shaft mechanism 1.

[0120] It is worth mentioning that, in this application, the first swing arm 10111 can be rotatably connected to the main shaft 102 not only via a virtual axis but also via a solid shaft, which makes the connection between the first swing arm 10111 and the main shaft 102 more reliable. It is understood that when the first swing arm 10111 is rotatably connected to the main shaft 102 via a solid shaft, the axis of rotation of the first swing arm 10111 around the main shaft 102 is also located on the side of the main shaft 102 opposite to the flexible display screen.

[0121] In this application, when the first swing arm 10111 is rotatably connected to the first connecting member 10113, reference can be continued. Figure 10 The first connector 10113 may include a first rotating shaft 101131 and a second rotating shaft 101132, wherein the axis of the first rotating shaft 101131 and the axis of the second rotating shaft 101132 are parallel and do not coincide.

[0122] Additionally, refer to Figure 14 , Figure 14This is a schematic diagram of a first rotating assembly 1011 provided in an embodiment of this application. A first connecting member 10113 is rotatably connected to a first swing arm 10111 via a first rotating shaft 101131, and a first connecting member 10113 is rotatably connected to a first support arm 10112 via a second rotating shaft 101132. This allows the first swing arm 10111 and the first support arm 10112 to engage in mutual pulling motion via the first connecting member 10113.

[0123] Reference Figure 15 , Figure 15 This is a schematic diagram of a first swing arm 10111 provided in an embodiment of this application. The first arc-shaped rotating block 101111 of the first swing arm 10111 is provided with a first mounting groove 1011112. (See also...) Figure 12 and Figure 15 The opening of the first mounting groove 1011112 is oriented toward the second arc-shaped groove 10212, so the first rotating shaft 101131 can be installed in the first mounting groove 1011112. Part of the surface of the first rotating shaft 101131 can contact the groove surface of the first mounting groove 1011112, and part of the surface of the first rotating shaft 101131 can contact the groove surface of the second arc-shaped groove 10212, so as to limit the first rotating shaft 101131 to the first mounting groove 1011112.

[0124] You can continue to refer to Figure 12 and Figure 15 The groove surface of the first mounting groove 1011112 may include a first arc surface 10111121, and the surface of the first rotating shaft 101131 that contacts the groove surface of the first mounting groove 1011112 is a second arc surface 1011311, and the center of the first arc surface 10111121 coincides with the center of the second arc surface 1011311. Additionally, refer to... Figure 7 The groove surface of the second arc-shaped groove 10212 can be the third arc surface 102121. And as... Figure 12 As shown, the surface of the first rotating shaft 101131 that contacts the groove surface of the second arc-shaped groove 10212 can be a fourth arc surface 1011312, in which case the center of the third arc surface 102121 coincides with the center of the fourth arc surface 1011312. Thus, it can be referred to together... Figure 12 and Figure 13 While the first rotating shaft 101131 slides along the groove surface of the second arc-shaped groove 10212 with the first arc-shaped rotating block 101111, the first rotating shaft 101131 can also rotate relative to the first arc-shaped rotating block 101111, thereby facilitating the movement of the first connecting member 10113 relative to the main shaft 102.

[0125] In this application, when the first connector 10113 is rotatably connected to the first support arm 10112, such as Figure 14As shown, the second rotating shaft 101132 can be simultaneously inserted into the first connecting member 10113 and the first support arm 10112. This simplifies the connection between the first connecting member 10113 and the first support arm 10112, thus simplifying the structure of the first rotating assembly 1011 and consequently the rotating shaft mechanism 1. It is worth noting that when both the first arcuate surface 101133 and the second arcuate surface 101134 of the first connecting member 10113 are arcuate surfaces, the center of the first arcuate surface 101133, the center of the second arcuate surface 101134, and the axis of the second rotating shaft 101132 coincide.

[0126] It is understood that in the rotating shaft mechanism 1 provided in this application embodiment, the first connecting member 10113 may include a plurality of first sub-connecting members that are rotatably connected in sequence. Furthermore, these plurality of first sub-connecting members may be located between the first swing arm 10111 and the first support arm 10112, so that the first swing arm 10111 can be rotatably connected to the adjacent first sub-connecting member, and the first support arm 10112 can be rotatably connected to the adjacent first sub-connecting member. The specific manner in which the first swing arm 10111 is rotatably connected to the adjacent first sub-connecting member, and the specific manner in which the first support arm 10112 is rotatably connected to the adjacent first sub-connecting member, can be referred to the above description of the rotatable connection between the first swing arm 10111 and the first support arm 10112 and the first connecting member 10113, and will not be repeated here. In this application, by setting the first connector 10113 as a plurality of first sub-connectors that are rotatably connected in sequence, so that the first swing arm 10111 and the first support arm 10112 are connected through the plurality of first sub-connectors, the speed uniformity of the first swing arm 10111 and the first support arm 10112 during the rotation around the main shaft 102 can be effectively improved, thereby enhancing the smoothness of the mutual pulling motion of the first swing arm 10111 and the first support arm 10112.

[0127] You can continue to refer to Figure 4In this embodiment, the rotating shaft mechanism 1 may further include a first housing fixing frame 1013 and a second housing fixing frame 1014, which are respectively disposed on opposite sides of the main shaft 102. The first rotating assembly 1011 is located between the first housing fixing frame 1013 and the second housing fixing frame 1014. The first swing arm 10111 is slidably connected to the first housing fixing frame 1013. Specifically, the first housing fixing frame 1013 is provided with a first sliding groove 10131. The first sliding groove 10131 extends along a first direction, and the first swing arm 10111 can be installed in the first sliding groove 10131 and can slide within the first sliding groove 10131 along the first direction. The first direction may be the direction in which the first housing fixing frame 1013 moves toward or away from the base 1021. Furthermore, to prevent the first swing arm 10111 from detaching from the first slide groove 10131, a first slide rail can be provided on the wall of the first slide groove 10131, and a first slider can be provided on the first swing arm 10111. This allows the first slider to be engaged with the first slide rail and to slide along the first slide rail, thereby limiting the movement of the first swing arm 10111 within the first slide groove 10131. Additionally, by providing the first slide rail on the wall of the first slide groove 10131, a guide can be provided for the sliding of the first swing arm 10111 along the first slide groove 10131, thereby improving the stability of the movement of the first swing arm 10111.

[0128] In this application, the first support arm 10112 is rotatably connected to the second housing fixing frame 1014. For specific implementation, please refer to... Figure 4 The second housing mounting bracket 1014 has a second mounting portion 10142. The end of the first support arm 10112 facing the second housing mounting bracket 1014 is mounted on the second mounting portion 10142, and the end of the first support arm 10112 facing the second housing mounting bracket 1014 is rotatably connected to the second mounting portion 10142.

[0129] In this embodiment, the specific manner in which the end of the first support arm 10112 facing the second housing fixing frame 1014 is rotatably connected to the second mounting portion 10142 is not limited. For example, please refer to... Figure 4 The second mounting part 10142 may be provided with a first mounting hole, and the end of the first support arm 10112 facing the second housing fixing frame 1014 is provided with a second mounting hole. Then the end of the first support arm 10112 facing the first housing fixing frame 1013 and the second mounting part 10142 can be rotatably connected by a rotating shaft that passes through the first mounting hole and the second mounting hole simultaneously.

[0130] You can continue to refer to Figure 4Similar to the structure of the first rotating assembly 1011, the second rotating assembly 1012 is located between the first housing fixing frame 1013 and the second housing fixing frame 1014. Furthermore, the second rotating assembly 1012 may include a second swing arm 10121, a second support arm 10122, and a second connecting member 10123. The second connecting member 10123 is located between the second swing arm 10121 and the second support arm 10122, and is rotatably connected to both the second swing arm 10121 and the second support arm 10122. In this application, when the second connecting member 10123 is rotatably connected to the second swing arm 10121 and the first support arm 10112, it can be configured in a manner similar to the described rotatable connection between the first connecting member 10113 and the second swing arm 10121 and the second support arm 10122. For example, refer to... Figure 10 , Figure 10 This term can also be used to describe the structure of the second connector 10123 provided in the embodiments of this application. The second connector 10123 may include a third rotating shaft 101231 and a fourth rotating shaft 101232, wherein the axis of the third rotating shaft 101231 is parallel to and does not coincide with the axis of the fourth rotating shaft 101232. The second connector 10123 is rotatably connected to the second swing arm 10121 via the third rotating shaft 101231, and the second connector 10123 is rotatably connected to the second support arm 10122 via the fourth rotating shaft 101232, thereby allowing the second swing arm 10121 and the second support arm 10122 to perform mutual pulling movements through the second connector 10123.

[0131] Additionally, refer to Figure 6 The main spindle 102 may be provided with a second track groove 1024, and the second connecting member 10123 may move along the second track groove, thereby restricting the movement trajectory of the second connecting member 10123. For specific implementation, refer to... Figure 7 The base 1021 may be provided with a third arc-shaped groove 10213, and the second connecting member 10123 is accommodated in the third arc-shaped groove 10213, and the second connecting member 10123 can slide along the groove surface of the third arc-shaped groove 10213. Additionally, refer to... Figure 8 The cover plate 1022 includes a third protrusion 10224, which is oriented towards Figure 7 The third arc-shaped groove 10213 of the middle base 1021 is provided, and there is a gap between the surface 102241 of the third protrusion and the groove surface 102131 of the third arc-shaped groove, which serves as the second track groove 1024.

[0132] In this application, as Figure 10As shown, the second connector 10123 may include a third arcuate surface 101233 and a fourth arcuate surface 101234. When the electronic device is in the unfolded state and the closed state, the third arcuate surface 101233 of the second connector 10123 can abut against the surface 102241 of the third protrusion, and the fourth arcuate surface 101234 abuts against the groove surface 102131 of the third arcuate groove. This allows the surface 102241 of the third protrusion and the groove surface 102131 of the third arcuate groove to confine the second connector 10123 within the second track groove 1024, so that the position of the second connector 10123 is relatively stable in the unfolded state and the closed state, and no misalignment or wobbling occurs, thereby improving the structural reliability of the rotating shaft mechanism 1 in the above two states.

[0133] In this embodiment, the third arcuate surface 101233 of the second connector 10123 can be set with reference to the first arcuate surface 101133 of the first connector 10113, and the fourth arcuate surface 101234 can be set with reference to the second arcuate surface 101134 of the first connector 10113. Further details are omitted here. Additionally, the second track groove 1024 can be specifically set with reference to the first track groove 1023. Simply put, the distance between the surface 102241 of the third protrusion and the groove surface 102131 of the third arcuate groove is equal at all points, so that the second track groove 1024 is a groove of equal width. In this case, during the process of the electronic device changing from an unfolded state to a closed state, and from a closed state to an unfolded state, the surface 102241 of the third protrusion and the third arcuate surface 101233, as well as the groove surface 102131 of the third arcuate groove and the fourth arcuate surface 101234, are always in contact. Thus, during the process of the electronic device moving from the unfolded state to the closed state, and from the closed state to the unfolded state, the movement trajectory of the second connector 10123 within the second track groove 1024 is the same. Alternatively, during the process of the electronic device moving from the unfolded state to the closed state, the third arcuate surface 101233 abuts against the surface 102241 of the third protrusion, and there is a gap between the fourth arcuate surface 101234 and the groove surface 102131 of the third arcuate groove; during the process of the electronic device moving from the closed state to the unfolded state, the fourth arcuate surface 101234 abuts against the groove surface 102131 of the third arcuate groove, and there is a gap between the third arcuate surface 101233 and the surface 102241 of the third protrusion, so that the movement trajectory of the second connector 10123 during the process of the electronic device moving from the unfolded state to the closed state is different from the movement trajectory of the second connector 10123 during the process of the electronic device moving from the closed state to the unfolded state.

[0134] In this application, the second swing arm 10121 is rotatably connected to the main shaft 102. Specifically, the rotatable connection between the second swing arm 10121 and the main shaft 102 can be achieved via a virtual axis. In a specific implementation, as follows... Figure 7As shown, the base 1021 may be provided with a fourth arc-shaped groove 10214. Also, refer to... Figure 4 and Figure 15 , Figure 15 This can also be used to demonstrate the structure of the second swing arm 10121. A second arc-shaped rotating block 101211 is provided at one end of the second swing arm 10121 facing the base 1021. The second arc-shaped rotating block 101211 can be, but is not limited to, a circular arc-shaped rotating block, and the fourth arc-shaped groove 10214 can be, but is not limited to, a circular arc-shaped groove. The second arc-shaped rotating block 101211 can be accommodated in the fourth arc-shaped groove 10214 and can slide along the groove surface of the fourth arc-shaped groove 10214. Thus, the second swing arm 10121 rotates around the base 1021 by sliding the second arc-shaped rotating block 101211 along the groove surface of the fourth arc-shaped groove 10214. This helps to reduce the space occupied by the second swing arm 10121 on the main shaft 102, thereby reducing the volume of the rotating module 101 and facilitating the miniaturization design of the rotating shaft mechanism 1. It is understandable that, for outward-folding electronic devices, when the second swing arm 10121 is rotatably connected to the main shaft 102 via a virtual axis, the axis of rotation of the second swing arm 10121 around the main shaft 102 is located on the side of the rotating shaft mechanism away from the flexible display screen.

[0135] Furthermore, in this application, the second arc-shaped rotating block 101211 may be, but is not limited to, a circular arc-shaped rotating block, and the fourth arc-shaped groove 10214 may be, but is not limited to, a circular arc-shaped groove. It is understood that when the second arc-shaped rotating block 101211 is a circular arc-shaped rotating block, its surface used to contact the groove surface of the fourth arc-shaped groove 10214 may be a circular arc surface, and the groove surface of the fourth arc-shaped groove 10214 is also a circular arc surface, with the centers of these two circular arc surfaces coinciding.

[0136] In this application, in order to improve the stability of the second swing arm 10121 rotating about the main shaft 102, as follows... Figure 8As shown, the cover plate 1022 also includes a fourth protrusion 10225 disposed towards the fourth arcuate groove 10214. At least a portion of the second arcuate rotating block 101211 is located between the fourth protrusion 10225 and the fourth arcuate groove 10214, and the surface of the second arcuate rotating block 101211 facing the fourth protrusion 10225 can contact the surface 102251 of the fourth protrusion, thereby confining the second arcuate rotating block 101211 between the cover plate 1022 and the base 1021, which can effectively improve the stability of the second arcuate rotating block 101211 rotating relative to the base 1021. In addition, when the groove surface of the fourth arcuate groove 10214 is an arcuate surface, the portion of the surface 102251 of the fourth protrusion that contacts the second arcuate rotating block 101211 can also be an arcuate surface, and the centers of the two arcuate surfaces coincide. In this application, the surface of the second arc-shaped rotating block 101211 facing the fourth protrusion 10225 can be either a plane or an arc surface, as long as the second arc-shaped rotating block 101211 can rotate relative to the fourth protrusion 10225 during the sliding process along the groove surface of the fourth arc-shaped groove 10214.

[0137] To improve the reliability of the connection between the second swing arm 10121 and the base 1021, the second arc-shaped rotating block 101211 may also be provided with a second recess 1012111, the opening of which faces the cover plate 1022. Additionally, a second insertion portion may be provided at the end of the cover plate 1022 facing the second housing fixing bracket 1014. In the closed state, the second insertion portion can be inserted into the second recess 1012111, and at least a portion of the surface of the second insertion portion facing the fourth arc-shaped groove 10214 abuts against the surface of the second recess 1012111. This restricts the rotational position of the second arc-shaped rotating block 101211, thereby preventing it from dislodging from the fourth arc-shaped groove 10214.

[0138] It is worth mentioning that, in this application, the second swing arm 10121 can be rotatably connected to the main shaft 102 not only via a virtual axis but also via a solid shaft, which makes the connection between the first swing arm 10111 and the main shaft 102 more reliable. For outward-folding electronic devices, when the second swing arm 10121 is rotatably connected to the main shaft 102 via a solid shaft, the axis of rotation of the second swing arm 10121 around the main shaft 102 is also located on the side of the rotating mechanism opposite to the flexible display screen.

[0139] When specifically connecting the second connector 10123 and the second swing arm 10121 to each other via the third rotating shaft 101231, please refer to... Figure 15The second arc-shaped rotating block 101211 is provided with a second mounting groove 1012112. The opening of the second mounting groove 1012112 faces the fourth arc-shaped groove 10214. The third rotating shaft 101231 can be installed in the second mounting groove 1012112. Part of the surface of the third rotating shaft 101231 can contact the groove surface of the second mounting groove 1012112, and part of the surface of the third rotating shaft 101231 can contact the groove surface of the fourth arc-shaped groove 10214, so as to limit the third rotating shaft 101231 to the second mounting groove 1012112.

[0140] like Figure 15 As shown, in this application, the groove surface of the second mounting groove 1012112 may include a fifth arc surface 10121121, and as... Figure 10 The surface of the third rotating shaft 101231 that contacts the groove surface of the second mounting groove 1012112 is the sixth arc surface 1012311, and the center of the fifth arc surface 10121121 coincides with the center of the sixth arc surface 1012311. Furthermore, the groove surface of the fourth arc groove 10214 is the seventh arc surface 102141, and the surface of the third rotating shaft 101231 that contacts the groove surface of the fourth arc groove 10214 can be the eighth arc surface 1012312, in which case the center of the seventh arc surface 102141 coincides with the center of the eighth arc surface 1012312. In this way, while the third rotating shaft 101231 slides along the groove surface of the fourth arc-shaped groove 10214 with the second arc-shaped rotating block 101211, the third rotating shaft 101231 can also rotate relative to the second arc-shaped rotating block 101211, thereby facilitating the movement of the second connecting member 10123 relative to the main shaft 102.

[0141] In this embodiment of the application, when the second connecting member 10123 and the second support arm 10122 are rotatably connected through the fourth rotating shaft 101232, the fourth rotating shaft 101232 can be simultaneously passed through the second connecting member 10123 and the second support arm 10122. The connection method between the second connecting member 10123 and the second support arm 10122 is relatively simple, which is beneficial to simplifying the structure of the second rotating assembly 1012, thereby simplifying the structure of the rotating shaft mechanism 1.

[0142] It is understood that in the rotating shaft mechanism 1 provided in this application embodiment, the second connecting member 10123 may include a plurality of second sub-connecting members that are rotatably connected in sequence. Furthermore, these plurality of second sub-connecting members may be located between the second swing arm 10121 and the second support arm 10122, so that the second swing arm 10121 can be rotatably connected to an adjacent second sub-connecting member, and the second support arm 10122 can be rotatably connected to an adjacent second sub-connecting member. The specific manner in which the second swing arm 10121 is rotatably connected to an adjacent second sub-connecting member, and the specific manner in which the second support arm 10122 is rotatably connected to an adjacent second sub-connecting member, can be referred to the above description of the rotatable connection between the second swing arm 10121 and the second support arm 10122 and the second connecting member 10123, and will not be repeated here. In this application, by setting the second connector 10123 as a plurality of second sub-connectors that are rotatably connected in sequence, so that the second swing arm 10121 and the second support arm 10122 are rotatably connected through the plurality of second sub-connectors, the speed uniformity of the second swing arm 10121 and the second support arm 10122 during the rotation around the main shaft 102 can be effectively improved, thereby enhancing the smoothness of the mutual pulling motion of the second swing arm 10121 and the second support arm 10122.

[0143] Reference Figure 16 , Figure 16This is a schematic diagram of the motion mechanism of the rotating shaft mechanism provided in the embodiments of this application. Based on the rotating shaft mechanism 1 provided in the above embodiments of this application, during the process of the electronic device changing from an unfolded state to a closed state, the first housing fixing frame 1013 and the second housing fixing frame 1014 move towards each other. When the first housing fixing frame 1013 drives the first swing arm 10111 to rotate clockwise around the main shaft 102, the first swing arm 10111 can slide along the groove surface of the second arc-shaped groove 10212, thereby driving the first connecting member 10113 to move toward the first swing arm 10111 in the first trajectory groove 1023 of the main shaft 102. Since the first connecting member 10113 is rotatably connected to the first support arm 10112, the first connecting member 10113 can drive the first support arm 10112 to rotate counterclockwise around the main shaft 102 during the movement of the first connecting member 10113 toward the first swing arm 10111 in the first track groove 1023 of the main shaft 102. Thus, the first support arm 10112 drives the second housing fixing frame 1014 to rotate counterclockwise around the main shaft 102. During the process of the electronic device changing from a closed state to an unfolded state, the first housing fixing frame 1013 and the second housing fixing frame 1014 move in opposite directions. When the first housing fixing frame 1013 drives the first swing arm 10111 to rotate counterclockwise around the main shaft 102, the first swing arm 10111 can drive the first connecting piece 10113 to move towards the first support arm 10112 in the first track groove 1023 of the main shaft 102. This can drive the first support arm 10112 to rotate clockwise around the main shaft 102, so that the second housing fixing frame 1014 can rotate clockwise around the main shaft 102 through the first support arm 10112, thereby realizing the folding and unfolding function of the rotating shaft mechanism 1.

[0144] Through the above structural relationship, the cross-section of the first connecting member 10113 can be made smaller to pass through the first track groove 1023 of the main shaft 102. At the same time, since the first connecting member 10113 has sufficient length in the vertical axial direction and is connected to the first swing arm 10111 and the first support arm 10112 respectively, the reliability of the rotating shaft mechanism 1 can be guaranteed. In this way, the thickness of the main shaft 102 and the overall thickness can be reduced while maintaining the reliability of the rotating shaft mechanism 1, making the entire rotating shaft mechanism 1 lightweight, thin, and reliable.

[0145] Furthermore, since the first connector 10113 can move along a set trajectory within the first track groove 1023, uncontrolled movement of the first connector 10113 during the entire folding and unfolding process can be avoided, thereby preventing random movement of the first housing fixing frame 1013 and the second housing fixing frame 1014, thus ensuring the structural and movement stability of the entire pivot mechanism 1. In some cases, through reasonable design of the first track groove 1023, the outer tangent of the pivot mechanism 1 can also maintain a constant length during the entire folding and unfolding process, thereby ensuring that the flexible display screen covering the surface of the pivot mechanism 1 can also maintain a basically constant length. This effectively avoids squeezing or pulling on the flexible display screen, thereby improving the structural reliability of the flexible display screen and thus improving the structural reliability of the electronic device.

[0146] Can be referenced again Figure 4 In this embodiment, the second rotating component 1012 can also be located between the first housing fixing frame 1013 and the second housing fixing frame 1014. The second swing arm 10121 can be slidably connected to the second housing fixing frame 1014. Specifically, the second housing fixing frame 1014 is provided with a second sliding groove 10141. Along the length direction of the rotating shaft mechanism 1, the second sliding groove 10141 and the second mounting part 10142 are spaced apart. The second sliding groove 10141 extends along a second direction, and the second swing arm 10121 can be installed in the second sliding groove 10141 and can slide within the second sliding groove 10141 along the second direction. The second direction can be the direction in which the second housing fixing frame 1014 moves toward or away from the base 1021. In addition, to prevent the second swing arm 10121 from falling out of the second sliding groove 10141, a second slide rail can be provided on the groove wall of the second sliding groove 10141, and a second slider can be provided on the second swing arm 10121. In this way, the second slider can be engaged in the second slide rail and can slide along the second slide rail to limit the second swing arm 10121 within the second slide groove 10141. In addition, by providing a second slide rail on the groove wall of the second slide groove 10141, it can provide guidance for the sliding of the second swing arm 10121 along the second slide groove 10141, thereby improving the stability of the movement of the second swing arm 10121.

[0147] Furthermore, the second support arm 10122 is rotatably connected to the first housing fixing frame 1013. Specifically, the first housing fixing frame 1013 has a first mounting portion 10132, which is spaced apart from the first sliding groove 10131 along the length of the rotating shaft mechanism 1. The end of the second support arm 10122 facing the first housing fixing frame 1013 is mounted to the first mounting portion 10132, and the end of the second support arm 10122 facing the first housing fixing frame 1013 is rotatably connected to the first mounting portion 10132.

[0148] In this embodiment, the specific manner in which the end of the second support arm 10122 facing the first housing fixing frame 1013 is rotatably connected to the first mounting portion 10132 is not limited. For example, please refer to... Figure 4 The first mounting part 10132 may be provided with a third mounting hole, and the end of the second support arm 10122 facing the first housing fixing frame 1013 is provided with a fourth mounting hole. The end of the second support arm 10122 facing the first housing fixing frame 1013 and the first mounting part 10132 can be rotatably connected by a rotating shaft that passes through the third mounting hole and the fourth mounting hole simultaneously.

[0149] Based on the rotating shaft mechanism 1 provided in the above embodiments of this application, during the process of the electronic device changing from an unfolded state to a closed state, the first housing fixing frame 1013 and the second housing fixing frame 1014 move towards each other. When the second housing fixing frame 1014 drives the second swing arm 10121 to rotate counterclockwise around the main shaft 102, the second swing arm 10121 can drive the second connecting member 10123 to move towards the second swing arm 10121 in the second track groove 1024 of the main shaft 102. Since the second connecting member 10123 is rotatably connected to the second support arm 10122, during the movement of the second connecting member 10123 towards the second swing arm 10121 in the second track groove 1024 of the main shaft 102, it can drive the second support arm 10122 to rotate clockwise around the main shaft 102, thereby driving the first housing fixing frame 1013 to rotate clockwise around the main shaft 102 through the second support arm 10122. During the process of the electronic device changing from a closed state to an unfolded state, the first housing fixing frame 1013 and the second housing fixing frame 1014 move in opposite directions. When the second housing fixing frame 1014 drives the second swing arm 10121 to rotate clockwise around the main shaft 102, the second swing arm 10121 can drive the second connecting member 10123 to move towards the second support arm 10122 within the second track groove 1024 of the main shaft 102. This can drive the second support arm 10122 to rotate counterclockwise around the main shaft 102, which in turn drives the first housing fixing frame 1013 to rotate counterclockwise around the main shaft 102. This achieves the folding and unfolding function of the rotating shaft mechanism 1.

[0150] Through the above structural relationship, the cross-section of the second connecting member 10123 can be made smaller to pass through the second track groove 1024 of the main shaft 102. At the same time, since the second connecting member 10123 has sufficient length in the vertical axial direction and is connected to the second swing arm 10121 and the second support arm 10122 respectively, the reliability of the rotating shaft mechanism 1 can be guaranteed. In this way, the thickness of the main shaft 102 and the overall thickness can be reduced while maintaining the reliability of the rotating shaft mechanism 1, making the entire rotating shaft mechanism 1 lightweight, thin, and reliable.

[0151] Since the second connector 10123 can move along a set trajectory, uncontrolled movement of the second connector 10123 during the entire folding and unfolding process can be avoided, thereby preventing random movement of the first housing fixing frame 1013 and the second housing fixing frame 1014, thus ensuring the structural and movement stability of the entire pivot mechanism 1. In some cases, through reasonable design of the second trajectory groove 1024, the outer tangent of the pivot mechanism 1 can also maintain a constant length during the entire folding and unfolding process, so that the flexible display screen covering the surface of the pivot mechanism 1 can also maintain a basically constant length. This effectively avoids squeezing or pulling on the flexible display screen, thereby improving the structural reliability of the flexible display screen and thus improving the structural reliability of the electronic device.

[0152] Reference Figure 17 , Figure 17 This is a partial structural schematic diagram of the rotating shaft mechanism 1 provided in the embodiments of this application, and in Figure 17 The main shaft is omitted to facilitate the explanation of the mutual pulling relationship between the first rotating assembly 1011 and the second rotating assembly 1012. In this application, the first swing arm 10111 is slidably connected to the first housing fixing frame 1013, and the first support arm 10112 is rotatably connected to the second housing fixing frame 1014. The first swing arm 10111 can pull the first support arm 10112 to move along a set trajectory through the first connecting member 10113. The second swing arm 10121 is slidably connected to the second housing fixing frame 1014, and the second support arm 10122 is rotatably connected to the first housing fixing frame 1013. The second swing arm 10121 can pull the second support arm 10122 to move along a set trajectory through the second connecting member 10123. This limits the movement distance of the first housing bracket 1013 and the second housing bracket 1014 towards or away from the main shaft 102, ensuring that the distances between the first housing bracket 1013 and the second housing bracket 1014 and the main shaft 102 are equal when the electronic device is in any folded state. Furthermore, during the transition of the electronic device from an unfolded state to a closed state, and from a closed state to an unfolded state, the distances of movement of the first housing bracket 1013 relative to the main shaft 102 and the distances of movement of the second housing bracket 1014 relative to the main shaft 102 can be made equal, thereby enabling the application of this pivot mechanism 1 in situations such as... Figure 2b When the electronic device shown is in the unfolded state, the extension length of the support surface formed by the first housing, the second housing and the rotating shaft mechanism 1 can be adapted to the flattened length of the flexible display screen. When the electronic device is in the closed state, it can meet the folding requirements of the foldable part of the flexible display screen, thereby avoiding deformation of the flexible display screen, reducing the squeezing or tensile stress on the flexible display screen, extending the service life of the flexible display screen and improving the reliability of the electronic device.

[0153] After introducing the rotating module of the pivot mechanism, the damping module will be further described in detail below. It should be understood that the above embodiments are only one possible implementation of the rotating module for realizing the folding and unfolding function of the electronic device; in other embodiments, the rotating module can also be implemented in other ways. The damping module involved in the embodiments of this application is applicable to any pivot mechanism in which the swing arm and the housing fixing frame of the rotating module are slidably connected.

[0154] Please refer to this again. Figure 4 In this embodiment, the rotating shaft mechanism 1 may include one damping module or multiple damping modules. When the rotating shaft mechanism 1 includes one damping module, this single damping module may correspond to one of the rotating modules 101 of the rotating shaft mechanism. When the rotating shaft mechanism includes multiple damping modules, these multiple damping modules may be arranged at intervals along the axial direction of the rotating shaft mechanism 1, and each of the multiple damping modules may correspond one-to-one with one of the multiple rotating modules 101 of the rotating shaft mechanism 1.

[0155] In this embodiment, the damping module may include a first damping component 1031 and a second damping component 1032. The first damping component 1031 and the second damping component 1032 are respectively disposed on both sides of the main shaft, and the first damping component 1031 is disposed corresponding to the first rotating component 1011, and the second damping component 1032 is disposed corresponding to the second rotating component 1012.

[0156] Figure 18 This is a schematic diagram of another partial structure of the rotating shaft mechanism 1 provided in an embodiment of this application. Figure 19 This is a partial structural schematic diagram of the damping module 103 provided in an embodiment of this application. Figure 20 This is a partial exploded structural diagram of the damping module 103 provided in an embodiment of this application. (See also...) Figures 18 to 20As shown in this embodiment, the first damping component 1031 may include a first cam 10311, a second cam 10312, a first elastic element 10313, and a first limiting block 10314. The first cam 10311 may be disposed on one side of the first swing arm 10111 along the axial direction of the rotating shaft mechanism 1, and the side of the first cam 10311 facing away from the first swing arm 10111 has a first cam surface 103111; the second cam 10312 may be disposed on the side of the first cam 10311 facing away from the first swing arm 10111, and the second cam 10312 is slidably disposed on the first housing fixing frame 1013 along the axial direction of the rotating shaft mechanism 1, and the side of the second cam 10312 facing the first cam 10311 has a first cam surface 103111. The second cam surface 103121; the first limiting block 10314 is disposed on the side of the second cam 10312 away from the first rocker arm 10111, and the first limiting block 10314 is fixed to the first housing fixing frame 1013; the first elastic member 10313 is limited between the second cam 10312 and the first limiting block 10314, thereby applying an elastic force to the second cam 10312, so that the second cam surface 103121 of the second cam 10312 abuts against the first cam surface 103111 of the first cam 10311.

[0157] In a specific implementation, the first cam 10311 can be fixed to the side of the first rocker arm 10111 by means of bonding, welding or riveting. Alternatively, the first cam 10311 can also be integrally formed with the first rocker arm 10111, which can be understood as the first cam surface 103111 being directly formed on the side of the first rocker arm 10111. This helps to simplify the manufacturing and assembly process of the rotating shaft mechanism 1.

[0158] In this embodiment, the first housing fixing frame 1013 may be provided with a first limiting groove 10133, which can extend along the axial direction of the rotating shaft mechanism 1, and the first limiting groove 10133 has a first opening 101331 facing the first swing arm 10111. At this time, the first limiting block 10314 can be fixed in the first limiting groove 10133, and the second cam 10312 can be slidably disposed in the first limiting groove 10133, and the second cam surface 103121 of the second cam 10312 can abut against the first cam surface 103111 of the first cam 10311 through the first opening 101331. In this way, on the one hand, the first limiting groove 10133 can be used to limit the movement direction of the second cam 10312 under the drive of the first elastic member 10313, thereby improving the structural stability and reliability of the first damping component 1031. On the other hand, the second cam 10312 and the first housing fixing frame 1013 can overlap or partially overlap in the thickness direction of the rotating shaft mechanism 1, thereby reducing the thickness of the rotating shaft mechanism 1 and helping to achieve a thinner and lighter design for electronic devices using the rotating shaft mechanism 1.

[0159] In one implementation, the groove wall of the first limiting groove 10133 opposite to the side where the first opening 101331 is located can be formed as a first limiting block 10314. That is, the first limiting block 10314 and the first housing fixing frame 1013 are an integral structure. This can simplify the structure of the rotating shaft mechanism 1 and improve the structural compactness of the rotating shaft mechanism 1.

[0160] In another implementation, the first limiting block 10314 can also be fixed in the first limiting groove 10133 by means of bonding, welding or riveting, for example, it can be fixed to the side of the first limiting groove 10133 opposite to the side where the first opening 101331 is located. This design, which makes the first limiting block 10314 and the first housing fixing frame 1013 independent of each other, can reduce the processing difficulty of the first limiting block 10314 and the first housing fixing frame 1013, thereby helping to reduce the processing cost of the rotating shaft mechanism 1.

[0161] Continue to refer to Figures 18 to 20 In this embodiment, the first limiting groove 10133 may have a first guide groove 101332 on its groove wall, which extends axially along the rotating shaft mechanism 1. A first guide block 103122 may be provided on the side of the second cam 10312, located within the first guide groove 101332 and capable of sliding within it. Through the cooperation of the first guide block 103122 and the first guide groove 101332, the sliding direction of the second cam 10312 within the first limiting groove 10133 can be limited, and guidance can be provided for the sliding of the second cam 10312 within the first limiting groove 10133, reducing the risk of the second cam 10312 slipping out of the first limiting groove 10133 and improving the motion stability of the second cam 10312.

[0162] In a specific implementation, the two side walls of the first limiting groove 10133 can be respectively provided with first guide grooves 101332. Correspondingly, the two sides of the second cam 10312 can be respectively provided with first guide blocks 103122. Thus, the second cam 10312 is guided and limited by the cooperation of the guide blocks and guide grooves on both sides, thereby further improving the motion stability of the second cam 10312. In addition, a first clearance groove 10134 may be provided on the first housing fixing frame 1013. The first clearance groove 10134 is connected to the first guide groove 101332. When the first cam 10311 is installed in the first limiting groove 10133, the first clearance groove 10134 can avoid the first guide block 103122 of the second cam 10312, so that the first guide block 103122 of the second cam 10312 can pass through the first clearance groove 10134 and smoothly enter the first guide groove 101332, reducing the installation difficulty of the second cam 10312 in the first housing fixing frame 1013.

[0163] Continue to refer to Figures 18 to 20 In some embodiments, the first elastic element 10313 can be a spring. The number of springs can be set according to parameters such as the magnitude of the damping force required by the first damping assembly 1031 and the space of the rotating shaft mechanism 1. For example, the figure shows the case of two springs, which can be arranged in parallel between the second cam 10312 and the first limiting block 10314. In addition, the first damping assembly 1031 may also include a first guide post 10315 corresponding to each spring. The first guide post 10315 can be fixed to the side of the first limiting block 10314 facing the second cam 10312, or it can be fixed to the side of the second cam 10312 facing the first limiting block 10314. This application does not limit this. The first guide post 10315 extends along the axial direction of the rotating shaft mechanism 1, and the spring can be sleeved on the corresponding first guide post 10315 to reduce the risk of displacement of the spring when elastic deformation occurs.

[0164] Of course, in some other embodiments, the first elastic element 10313 may also be a spring sheet, and there may be multiple spring sheets, which may be stacked between the second cam 10312 and the first limiting block 10314.

[0165] In one specific implementation, the second cam 10312 may have a first groove (not shown in the figure) on the side facing the first housing bracket 1013. The first housing bracket 1013 may have a second groove 10135 corresponding to the first groove. After the second cam 10312 is installed on the first housing bracket 1013, the first groove and the second groove 10135 can close together to form a space, within which the first elastic member 10313 can be disposed. It should be understood that when the first housing bracket 1013 is provided with a first limiting groove 10133, the second groove 10135 can specifically be disposed on the bottom wall of the first limiting groove 10133.

[0166] Through the above design, the space formed by the first groove and the second groove 10135 can be used to limit the first elastic member 10313. Since the space is formed by the two grooves, the depth of the two grooves is relatively small. This allows the thickness of the second cam 10312 and the first housing fixing frame 1013 to be appropriately reduced without affecting the structural strength of the second cam 10312 and the first housing fixing frame 1013, thereby helping to reduce the overall thickness of the rotating shaft mechanism 1.

[0167] In the embodiments of this application, both the first cam surface 103111 and the second cam surface 103121 may include multiple protrusions and recesses. When the inclined surfaces of the protrusions of the two cam surfaces come into contact, a damping force that prevents the two cam surfaces from continuing to rotate relative to each other can be generated between the two cam surfaces. By rationally designing the curved contours of the first cam surface 103111 and the second cam surface 103121, the first cam 10311 can push the second cam 10312 towards the first limit block 10314 during the closing process of the rotating shaft mechanism 1, as the first swing arm 10111 rotates, thereby compressing the first elastic element 10313, providing the user with a more obvious operating feel and improving the user experience. During the unfolding process of the rotating shaft mechanism 1, the first elastic element 10313 gradually rebounds from the compressed state and releases the accumulated elastic potential energy, thereby pushing the second cam 10312 to slide towards the first cam 10311. In this way, the second cam 10312 can apply a torque to the first cam 10311 and the first swing arm 10111 to assist their rotation, thereby providing a certain unfolding assistance to the rotating shaft mechanism 1 and reducing the difficulty of unfolding the rotating shaft mechanism 1.

[0168] Furthermore, in this embodiment, through the rational design of the first cam surface 103111 and the second cam surface 103121, the first cam 10311 and the first swing arm 10111 can be hovered at a set angle, that is, the first rotating component can be hovered. When the rotating shaft mechanism 1 is applied to an electronic device, the hovering design of the first rotating component can allow the electronic device to be positioned in some intermediate states, thereby further improving the user experience.

[0169] Can be referenced again Figures 18 to 20 Similar to the structure of the first damping component 1031, the second damping component 1032 may include a third cam 10321, a fourth cam 10322, a second elastic element 10323, and a second limiting block 10324. The third cam 10321 may be disposed on one side of the second swing arm 10121 along the axial direction of the rotating shaft mechanism 1, and the side of the third cam 10321 facing away from the second swing arm 10121 has a third cam surface 103211; the fourth cam 10322 may be disposed on the side of the third cam 10321 facing away from the second swing arm 10121, and the fourth cam 10322 is slidably disposed on the second housing fixing frame along the axial direction of the rotating shaft mechanism 1, and the side of the fourth cam 10322 facing the third cam 10321 has a third cam surface 103211. The fourth cam surface 103221; the second limiting block 10324 is disposed on the side of the fourth cam 10322 away from the second rocker arm 10121, and the second limiting block 10324 is fixed to the second housing fixing frame; the second elastic element 10323 is limited between the fourth cam 10322 and the second limiting block 10324, thereby applying an elastic force to the fourth cam 10322, so that the fourth cam surface 103221 of the fourth cam 10322 abuts against the third cam surface 103211 of the third cam 10321.

[0170] In a specific implementation, the third cam 10321 and the second rocker arm 10121 can be an integral structure, so that the side of the second rocker arm 10121 forms the third cam surface 103211 of the third cam 10321. Alternatively, the third cam 10321 can also be fixed to the side of the second rocker arm 10121 by means of bonding, welding or riveting.

[0171] The second housing mounting bracket may be provided with a second limiting groove arranged along the axial direction of the rotating shaft mechanism. The second limiting groove has a second opening facing the second swing arm. The second limiting block 10324 can be fixed in the second limiting groove, and the fourth cam 10322 can be slidably disposed in the second limiting groove. The fourth cam surface 103221 of the fourth cam 10322 can abut against the third cam surface 103211 of the third cam 10321 through the second opening. In this way, on the one hand, the second limiting groove can be used to limit the movement direction of the fourth cam 10322 under the drive of the second elastic member 10323, thereby improving the structural stability and reliability of the second damping assembly 1032. On the other hand, the fourth cam 10322 and the second housing mounting bracket can overlap or partially overlap in the thickness direction of the rotating shaft mechanism 1, thereby reducing the thickness of the rotating shaft mechanism 1 and helping to achieve a thinner and lighter design for electronic devices using this rotating shaft mechanism 1.

[0172] In one implementation, the second limiting block 10324 and the second housing fixing frame can be an integral structure. For example, the groove wall of the second limiting groove opposite to the side where the second opening is located can be formed as the second limiting block 10324. In another implementation, the second limiting block 10324 can be fixed in the second limiting groove by means of bonding, welding or riveting, for example, it can be fixed to the side of the second limiting groove opposite to the side where the second opening is located.

[0173] In this embodiment, the wall of the second limiting groove may be provided with a second guide groove extending axially along the rotating shaft mechanism, and the side of the fourth cam 10322 may be provided with a second guide block 103222. The second guide block 103222 is slidably disposed in the second guide groove, thereby limiting the sliding direction of the fourth cam 10322 in the second limiting groove by the cooperation between the second guide block 103222 and the second guide groove, and providing guidance for the sliding of the fourth cam 10322, reducing the risk of the fourth cam 10322 slipping out in the second limiting groove, and improving the motion stability of the fourth cam 10322.

[0174] In addition, a second clearance groove can be provided on the second housing fixing frame. The second clearance groove is connected to the second guide groove. When the fourth cam 10322 is installed in the second limiting groove, the second clearance groove can avoid the second guide block 103222 of the fourth cam 10322, so that the second guide block 103222 of the fourth cam 10322 can smoothly enter the second guide groove, reducing the installation difficulty of the fourth cam 10322 on the second housing fixing frame.

[0175] Continue to refer to Figures 18 to 20In this embodiment, the second elastic element 10323 can be a spring. The number of springs can be set according to parameters such as the damping force required by the second damping assembly 1032 and the space of the rotating shaft mechanism 1. The figure shows the case where the second elastic element 10323 includes two springs, which can be arranged in parallel between the fourth cam 10322 and the second limiting block 10324. In addition, the second damping assembly 1032 can also include a second guide post 10325 corresponding to each spring. The second guide post 10325 can be fixed to the side of the second limiting block 10324 facing the fourth cam 10322, or it can be fixed to the side of the fourth cam 10322 facing the second limiting block 10324. This application does not limit this. The second guide post 10325 extends along the axial direction of the rotating shaft mechanism 1, and the spring can be sleeved on the corresponding second guide post 10325 to reduce the risk of displacement of the spring when elastic deformation occurs.

[0176] In some other embodiments, the second elastic element 10323 may also be a spring sheet, and there may be multiple spring sheets, which may be stacked between the fourth cam 10322 and the second limiting block 10324.

[0177] In one specific implementation, the fourth cam 10322 may have a third groove on the side facing the second housing bracket, and the second housing bracket may have a fourth groove corresponding to the third groove. After the fourth cam 10322 is installed on the second housing bracket, the third and fourth grooves can enclose a space, within which the second elastic element 10323 can be placed. It should be understood that when the second housing bracket has a second limiting groove, the fourth groove can specifically be located on the bottom wall of the first limiting groove. With this design, the space enclosed by the third and fourth grooves can be used to limit the second elastic element 10323. Furthermore, since the space is formed by the two grooves, the depths of the two grooves are relatively small. This allows for a suitable reduction in the thickness of the fourth cam 10322 and the second housing bracket without affecting their structural strength, thereby helping to reduce the overall thickness of the rotating shaft mechanism 1.

[0178] In the embodiments of this application, both the third cam surface 103211 and the fourth cam surface 103221 may include multiple protrusions and recesses. When the inclined surfaces of the protrusions of the two cam surfaces come into contact, a damping force that prevents the two cam surfaces from continuing to rotate relative to each other can be generated between the two cam surfaces. By rationally designing the curved contours of the third cam surface 103211 and the fourth cam surface 103221, during the closing process of the rotating shaft mechanism 1, as the second swing arm 10121 rotates, the third cam 10321 can push the fourth cam 10322 towards the second limit block 10324, thereby compressing the second elastic element 10323, giving the user a more obvious operating feel and improving the user experience; during the unfolding process of the rotating shaft mechanism 1, the second elastic element 10323 gradually rebounds from the compressed state and releases the accumulated elastic potential energy, thereby pushing the fourth cam 10322 towards the third cam 10321. In this way, the fourth cam 10322 can apply a torque to the third cam 10321 and the second swing arm 10121 to assist their rotation, thereby providing a certain unfolding assistance to the rotating shaft mechanism 1 and reducing the difficulty of unfolding the rotating shaft mechanism 1.

[0179] Furthermore, in this embodiment, through the rational design of the third cam surface 103211 and the fourth cam surface 103221, the third cam 10321 and the second swing arm 10121 can be hovered at a set angle, that is, the second rotating component can be hovered. When the rotating shaft mechanism 1 is applied to an electronic device, the hovering design of the second rotating component can allow the electronic device to be positioned in some intermediate states, thereby further improving the user experience.

[0180] Figure 21 A partial structural schematic diagram of another damping module provided in an embodiment of this application. (Reference) Figure 21 As shown in the embodiments of this application, the damping module may also include a first damping component 1031 and a second damping component 1032. The structures of the first damping component 1031 and the second damping component 1032 can be designed with reference to the description in the foregoing embodiments, and will not be repeated here.

[0181] Unlike the previous embodiments, this embodiment uses two first damping components 1031 and two second damping components 1032. The two first damping components 1031 can be symmetrically arranged on both sides of the first swing arm 10111 along the axial direction of the rotating shaft mechanism, thereby balancing the forces on both sides of the first swing arm 10111, reducing the risk of jamming, and improving the motion reliability of the first swing arm 10111. Similarly, the two second damping components 1032 can be symmetrically arranged on both sides of the second swing arm 10121 along the axial direction of the rotating shaft mechanism, thereby balancing the forces on both sides of the second swing arm 10121, reducing the risk of jamming, and improving the motion reliability of the second swing arm 10121.

[0182] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A rotating shaft mechanism, characterized in that, It includes a main spindle, a first housing mounting bracket, a second housing mounting bracket, a rotating module, and a damping module. The first housing mounting bracket and the second housing mounting bracket are respectively disposed on both sides of the main spindle, wherein: The rotating module includes a first swing arm and a second swing arm. The first swing arm is rotatably connected to the main shaft and slidably connected to the first housing fixing frame. The second swing arm is rotatably connected to the main shaft and slidably connected to the second housing fixing frame. The damping module includes a first damping component and a second damping component. The first damping component includes a first cam, a second cam, a first elastic element, and a first limiting block. The first cam is disposed on one side of the first swing arm along the axial direction of the rotating shaft mechanism. The second cam is located on the side of the first cam opposite to the first swing arm and is slidably disposed on the first housing fixing frame along the axial direction of the rotating shaft mechanism. The cam surface of the second cam abuts against the cam surface of the first cam. The first limiting block is located on the side of the second cam opposite to the first swing arm and is fixed to the first housing fixing frame. The two ends of the first elastic element are respectively connected to the second cam. The second damping assembly includes a third cam, a fourth cam, a second elastic element, and a second limiting block. The third cam is disposed on one side of the second swing arm along the axial direction of the rotating shaft mechanism. The fourth cam is located on the side of the third cam away from the second swing arm and is slidably disposed on the second housing fixing frame along the axial direction of the rotating shaft mechanism. The cam surface of the fourth cam abuts against the cam surface of the third cam. The second limiting block is located on the side of the fourth cam away from the second swing arm and is fixed to the second housing fixing frame. The two ends of the second elastic element abut against the fourth cam and the second limiting block, respectively. The second cam has a first groove on the side facing the first housing bracket, and the first housing bracket has a second groove corresponding to the position of the first groove. The first elastic element is located in the space formed by the first groove and the second groove. The fourth cam has a third groove on the side facing the second housing bracket, and the second housing bracket has a fourth groove corresponding to the position of the third groove. The second elastic element is located in the space formed by the third groove and the fourth groove.

2. The rotating shaft mechanism as described in claim 1, characterized in that, The first housing fixing frame is provided with a first limiting groove extending along the axial direction of the rotating shaft mechanism. The first limiting groove has a first opening facing the first swing arm. The first limiting block is fixed in the first limiting groove. The second cam is slidably 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. The second housing fixing frame is provided with a second limiting groove extending along the axial direction of the rotating shaft mechanism. The second limiting groove has a second opening facing the second swing arm. The second limiting block is fixed in the second limiting groove. The fourth cam is slidably disposed in the second limiting groove, and the cam surface of the fourth cam abuts against the cam surface of the third cam through the second opening.

3. The rotating shaft mechanism as described in claim 2, characterized in that, The groove wall of the first limiting groove, which is opposite to the first opening, is formed as the first limiting block; The groove wall of the second limiting groove, which is opposite to the second opening, is formed as the second limiting block.

4. The rotating shaft mechanism as described in claim 2, characterized in that, The first limiting groove has a first guide groove extending along the axial direction of the rotating shaft mechanism, and the second cam has a first guide block, which is slidably disposed in the first guide groove. The second limiting groove has a second guide groove extending axially along the rotating shaft mechanism, and the fourth cam has a second guide block, which is slidably disposed in the second guide groove.

5. The rotating shaft mechanism as described in any one of claims 1 to 4, characterized in that, The first cam and the first rocker arm are an integral structure; and / or The third cam and the second rocker arm are an integral structure.

6. The rotating shaft mechanism as described in any one of claims 1 to 4, characterized in that, The damping module has two first damping components, which are symmetrically arranged on both sides of the first swing arm along the axial direction of the rotating shaft mechanism. The damping module contains two second damping components, which are symmetrically arranged on both sides of the second swing arm along the axial direction of the rotating shaft mechanism.

7. The rotating shaft mechanism as described in any one of claims 1 to 4, characterized in that, The rotating module further includes a first support arm, a second support arm, a first connector, and a second connector, wherein: The first support arm is rotatably connected to the second housing fixing frame. The first connecting member is located between the first swing arm and the first support arm. The first connecting member is rotatably connected to the first swing arm and the first supporting arm. The main shaft is provided with a first track groove. The first connecting member can move along the first track groove so as to limit the movement trajectory of the first connecting member through the first track groove. The second support arm is rotatably connected to the first housing fixing frame. The second connecting member is located between the second swing arm and the second support arm. The second connecting member is rotatably connected to the second swing arm and the second supporting arm. The main shaft is provided with a second track groove. The second connecting member can move along the second track groove to limit the movement trajectory of the second connecting member through the second track groove.

8. The rotating shaft mechanism as described in claim 7, characterized in that, The main shaft includes a base and a cover plate. The base is provided with a first arc-shaped groove and a third arc-shaped groove. The cover plate covers the base and includes a first protrusion facing the first arc-shaped groove and a third protrusion facing the third arc-shaped groove. The gap between the surface of the first protrusion and the groove surface of the first arc-shaped groove is the first trajectory groove. The first connecting member includes a first arc-shaped surface and a second arc-shaped surface. When the rotating shaft mechanism is in the unfolded state and the closed state, the first arc-shaped surface abuts against the surface of the first protrusion, and the second arc-shaped surface abuts against the groove surface of the first arc-shaped groove. The gap between the surface of the third protrusion and the groove surface of the third arc-shaped groove serves as the second trajectory groove. The second connecting member includes a third arc-shaped surface and a fourth arc-shaped surface. When the rotating shaft mechanism is in the unfolded state and the closed state, the third arc-shaped surface abuts against the surface of the third protrusion, and the fourth arc-shaped surface abuts against the groove surface of the third arc-shaped groove.

9. The rotating shaft mechanism as described in claim 8, characterized in that, During the process of the rotating shaft mechanism changing from the unfolded state to the closed state, the first arc-shaped surface abuts against the surface of the first protrusion, and there is a gap between the second arc-shaped surface and the groove surface of the first arc-shaped groove; during the process of the rotating shaft mechanism changing from the closed state to the unfolded state, the second arc-shaped surface abuts against the groove surface of the first arc-shaped groove, and there is a gap between the first arc-shaped surface and the surface of the first protrusion. During the process of the rotating shaft mechanism changing from the unfolded state to the closed state, the third arc-shaped surface abuts against the surface of the third protrusion, and there is a gap between the fourth arc-shaped surface and the groove surface of the third arc-shaped groove; during the process of the rotating shaft mechanism changing from the closed state to the unfolded state, the fourth arc-shaped surface abuts against the groove surface of the third arc-shaped groove, and there is a gap between the third arc-shaped surface and the surface of the third protrusion.

10. The rotating shaft mechanism as described in claim 8, characterized in that, The distance between the surface of the first protrusion and the groove surface of the first arc-shaped groove is equal at all points. During the process of the rotating shaft mechanism from the unfolded state to the closed state and from the closed state to the unfolded state, the first arc-shaped surface abuts against the surface of the first protrusion, and the second arc-shaped surface abuts against the groove surface of the first arc-shaped groove; the distance between the surface of the third protrusion and the groove surface of the third arc-shaped groove is equal at all points. During the process of the rotating shaft mechanism from the unfolded state to the closed state and from the closed state to the unfolded state, the third arc-shaped surface abuts against the surface of the third protrusion, and the fourth arc-shaped surface abuts against the groove surface of the third arc-shaped groove.

11. The rotating shaft mechanism as described in claim 8, characterized in that, The first arc surface is a circular arc surface, the second arc surface is a circular arc surface, and the sum of the radii of the first arc surface and the radii of the second arc surface is equal to the distance between the surface of the first protrusion and the groove surface of the first arc groove. The third arc surface is a circular arc surface, the fourth arc surface is a circular arc surface, and the sum of the radii of the third arc surface and the radii of the fourth arc surface is equal to the distance between the surface of the third protrusion and the groove surface of the third arc groove.

12. An electronic device, characterized in that, It includes a first housing, a second housing, a flexible display screen, and a pivot mechanism as described in any one of claims 1 to 11, wherein: The first housing and the second housing are respectively disposed on opposite sides of the rotating shaft mechanism, the first housing fixing frame is fixedly connected to the first housing, and the second housing fixing frame is fixedly connected to the second housing; The flexible display screen continuously covers the first housing, the second housing, and the rotating shaft mechanism, and the flexible display screen is fixedly connected to the first housing and the second housing.

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