Rotating mechanism and foldable electronic device

Abstract

The present application provides a rotating mechanism and a foldable electronic device, wherein the rotating mechanism includes a bearing base, a first synchronous swing arm, a second synchronous swing arm, a first fixed plate, a second fixed plate, and a first damping assembly; the first synchronous swing arm and the second synchronous swing arm are connected to the bearing base; the first synchronous swing arm is connected to the first fixed plate, and the second synchronous swing arm is connected to the second fixed plate; the first synchronous swing arm includes a first swing arm body and a first rack; the first damping assembly is mounted on the first fixed plate, and the first damping assembly includes a first gear and a first damping member; the first damping member is connected to the first fixed plate and the first gear, and the first gear is meshed with the first rack; the first synchronous swing arm drives the first rack to push the first gear to rotate, and the first gear drives the first damping member to elastically deform, so that the first damping member generates a damping force. The rotating mechanism provided by the present application has a simple structure and is light in weight, which reduces the difficulty of design and assembly and is conducive to the lightweight design of electronic devices.

Description

Technical Field

[0001] The present application relates to the technical field of electronic products, and in particular to a rotating mechanism and a foldable electronic device. Background Art

[0002] With the advancement of technology, various electronic devices have become indispensable in daily life and production. Foldable electronic devices, with their large display area and portability, have become a growing trend. Current foldable electronic devices primarily rely on a rotation mechanism to achieve folding and unfolding. Conventional rotation mechanisms employ multiple gears and springs to achieve synchronous rotation while also providing a certain damping force to enhance the user's experience.

[0003] However, the current rotating mechanism has many components such as damping structures, which makes the structure more complex and increases the weight, increasing the difficulty of design and assembly, and is not conducive to the lightweight design of electronic equipment. Summary of the Invention

[0004] The present application provides a rotating mechanism and a foldable electronic device, which have a relatively simple structure and are light in weight, thereby reducing the difficulty of design and assembly and facilitating the lightweight design of the electronic device.

[0005] In a first aspect, the present application provides a rotation mechanism comprising: a supporting base, a first synchronous swing arm, a second synchronous swing arm, a first fixed plate, a second fixed plate, and a first damping assembly. The supporting base is elongated. The first and second fixed plates are both rectangular thin plates. The first and second synchronous swing arms are both narrow strips.

[0006] The first synchronous swing arm and the second synchronous swing arm are respectively mounted on opposite sides of the bearing base in the width direction and are rotatably connected to the bearing base; the first synchronous swing arm is slidably and rotatably connected to the first fixed plate, and the second synchronous swing arm is slidably and rotatably connected to the second fixed plate. The first synchronous swing arm includes a first swing arm body and a first rack located on the first swing arm body; the first swing arm body is rotatably connected to the bearing base and is slidably and rotatably connected to the first fixed plate. The first damping assembly is mounted on the first fixed plate and includes a first gear and a first damping member; the first damping member is located on the first fixed plate and is fixedly connected to the first fixed plate and the first gear, and the first gear is meshed with the first rack.

[0007] The first synchronous swing arm can drive the first rack to push the first gear to rotate, and the first gear drives the first damping member to undergo elastic deformation, and the first damping member after elastic deformation generates a damping force.

[0008] In the present application, the first damping component is installed on the first fixed plate. Compared with installing the first damping component on the bearing component, the thickness dimension of the bearing base is reduced, thereby reducing the thickness dimension of the entire rotating mechanism; the first damping component is installed on the first fixed plate, which makes more space for the components installed on the bearing base, making it easier to install the remaining components on the bearing base, and the precision requirements are relatively reduced, which is conducive to reducing costs.

[0009] In addition, compared with the damping assembly provided on the supporting base, the first damping assembly provided in this embodiment does not require the use of multiple springs, connecting rods and other components, and has a relatively simple structure, which reduces the number of parts of the rotating mechanism, thereby reducing the difficulty of assembly, reducing the overall weight of the rotating mechanism, and thus reducing costs.

[0010] In addition, the present application utilizes the elastic deformation of the first damping member to provide damping force for the first synchronous swing arm, so that the first synchronous swing arm drives the first fixed plate to hover, and the first fixed plate drives the first shell to hover, so that the user can obtain a good damping feeling.

[0011] In some embodiments, the first and second synchronous swing arms rotate relative to each other, and the first rack drives the first gear to rotate, causing the first damping member to elastically deform, causing the first fixing plate to hover at a preset angle. The "preset angle" here refers to the angle between the first and second housings, that is, the angle between the first and second fixing plates, when the foldable electronic device is hovering. The preset angle ranges from 0 to 180 degrees.

[0012] The elastic deformation of the first damping member is used to provide damping force, so that the first fixing plate can hover at a preset angle, and then the first shell can hover at a preset angle. The structure is relatively simple, can provide sufficient damping force, increase user convenience, and enable users to obtain a good damping feeling.

[0013] In some embodiments, the first damping member includes a first inner ring, a first outer ring, and a first damping strip; the first outer ring is sleeved around the outer circumference of the first inner ring and is concentrically arranged with the first inner ring; the first damping strip is located between the first inner ring and the first outer ring, with opposite ends of the first damping strip being fixedly connected to the outer circumference of the first inner ring and the inner circumference of the first outer ring, respectively. One of the first inner ring and the first outer ring is fixedly connected to the first gear, and the other is fixedly connected to the first fixed plate; the first inner ring and the first outer ring are capable of relative rotation in opposite directions, so that the first damping strip switches between a natural state and a bent state.

[0014] Therefore, when the rotating mechanism is in a natural state, the first damping strip does not undergo elastic deformation and does not generate damping force. The first synchronous swing arm drives the first rack to push the first gear to rotate, and the first gear drives the first inner ring to rotate relative to the first outer ring, or drives the first outer ring to rotate relative to the first inner ring, so that one end of the first damping strip is displaced relative to the other end. At this time, the first damping strip gradually changes from a natural state to a bent state, and the bent first damping strip generates a damping force. The damping force acts on the first gear, and the first gear transmits the damping force to the first synchronous swing arm. The first synchronous swing arm transmits the damping force to the first fixed plate, thereby achieving the first shell hovering at a preset angle.

[0015] In some embodiments, the first inner ring is fixedly connected to the first gear, and the first outer ring is fixedly connected to the first fixed plate; the first gear drives the first inner ring to rotate relative to the first outer ring.

[0016] Specifically, the first gear includes first gear teeth, a first connecting rod, and a first fixed shaft. The first connecting rod is fixedly connected to one side of the first gear, and the first gear is rotatably connected to the first fixed shaft, with a portion of the first fixed shaft located outside the other side of the first gear. The first gear teeth are annular external teeth. The outer circumference of the first connecting rod is provided with two third limiting grooves. The first gear teeth mesh with the first rack.

[0017] The first damping member further includes a first fixing block and a second fixing block, wherein the first fixing block is fixedly connected to the inner circumference of the first inner ring and there are two first fixing blocks, and the second fixing block is fixedly connected to the outer circumference of the first outer ring and there are two second fixing blocks.

[0018] The second fixing block of the first damping member is located in the first limiting groove on the side of the first mounting groove to ensure that the first outer ring is fixed relative to the first fixing plate, that is, the first outer ring is fixedly connected to the first fixing plate. The first connecting rod of the first gear is located in the first inner ring of the first damping member, and the first fixing block is located in the third limiting groove of the first connecting rod to ensure that the first inner ring does not rotate relative to the first gear, that is, the first inner ring of the first damping member is fixedly connected to the first gear. The first fixed shaft of the first gear is fixedly connected to the first fixing plate to increase the stability of the first gear when it rotates along the first fixed shaft. In this way, the first outer ring and the first inner ring can rotate relative to each other, and the first inner ring rotates relative to the first fixing plate, while the first outer ring is stationary relative to the first fixing plate.

[0019] In some embodiments, the first inner ring is fixedly connected to the first fixed plate, and the first outer ring is fixedly connected to the first gear; the first gear drives the first outer ring to rotate relative to the first inner ring. The first inner ring is fixedly connected to the first fixed plate through an interference fit, a cam-and-groove fit, or the like, and the first outer ring is fixedly connected to the first gear through an interference fit, a cam-and-groove fit, or the like. This achieves relative rotation between the first inner ring and the first outer ring, with the first outer ring rotating relative to the first fixed plate while the first inner ring remains stationary relative to the first fixed plate.

[0020] In some embodiments, the first damping strip is inclined relative to the radial direction of the first damping element. The radial direction of the first damping element refers to the direction from the center of the circle enclosing the first outer ring to any point on the circle enclosing the first outer ring. The first damping strip is inclined within the limited space between the first inner ring and the first outer ring, thereby increasing the length of the first damping strip and thereby increasing the damping force provided by the first damping element.

[0021] In some embodiments, the first damping strip is made of a metal material with a yield strength greater than 1000 MPa. Thus, the first damping strip has sufficient elastic strength to meet the requirements of multiple switching between the bent state and the natural state, ensuring that the first damping element can provide sufficient damping force and has a long service life.

[0022] In some embodiments, multiple first damping strips are evenly distributed between the first inner ring and the first outer ring, and are arranged axially around the first damping member. Providing multiple first damping strips can increase the damping force provided. The even distribution of the multiple first damping strips makes the damping force more evenly distributed, thereby increasing the stability of the first synchronous swing arm's hovering, thereby increasing the stability of the first fixed plate's hovering, and further increasing the stability of the first housing's hovering.

[0023] In some embodiments, the second synchronous swing arm includes a second swing arm body and a second rack located on the second swing arm body. The second swing arm body is rotatably connected to the support base and is slidably and rotatably connected to the second fixed plate. The rotation mechanism also includes a second damping assembly mounted on the second fixed plate and including a second gear and a second damping member. The second damping member is located on the second fixed plate and fixedly connected to the second fixed plate and the second gear. The second gear meshes with the second rack.

[0024] In the present application, the second damping assembly is installed on the second fixed plate. Compared with installing the second damping assembly on the bearing assembly, the thickness dimension of the bearing base is reduced, thereby reducing the thickness dimension of the entire rotating mechanism; the second damping assembly is installed on the second fixed plate, which makes more space for the components installed on the bearing base, making it easier to install the remaining components on the bearing base, and the precision requirements are relatively reduced, which is conducive to reducing costs.

[0025] In addition, compared with the damping assembly provided on the supporting base, the second damping assembly provided in this embodiment does not require the use of multiple springs, connecting rods and other components, and has a relatively simple structure, which reduces the number of parts of the rotating mechanism, thereby reducing the difficulty of assembly, reducing the overall weight of the rotating mechanism, and thus reducing costs.

[0026] In addition, the present application utilizes the elastic deformation of the second damping member to provide damping force for the second synchronous swing arm, so that the second synchronous swing arm drives the second fixed plate to hover, and the second fixed plate drives the second shell to hover, so that the user can obtain a good damping feeling.

[0027] In some embodiments, the first synchronous swing arm and the second synchronous swing arm rotate relative to each other, and the second rack pushes the second gear to rotate, so that the second damping member elastically deforms and the second fixed plate hovers at a preset angle.

[0028] The "preset angle" here refers to the angle between the first and second housings of the foldable electronic device when it is hovering, that is, the angle between the first fixing plate and the second fixing plate. The preset angle range is 0 to 180 degrees.

[0029] The elastic deformation of the second damping member is used to provide damping force, so that the second fixing plate can hover at a preset angle, and then the second shell can hover at a preset angle. The structure is relatively simple, can provide sufficient damping force, increase user convenience, and enable users to obtain a good damping feeling.

[0030] In some embodiments, the second damping member includes a second inner ring, a second outer ring, and a second damping strip; the second outer ring is sleeved around the outer circumference of the second inner ring and is concentrically arranged with the second inner ring; the second damping strip is positioned between the second inner ring and the second outer ring, with opposite ends of the second damping strip being fixedly connected to the outer circumference of the second inner ring and the inner circumference of the second outer ring, respectively. One of the second inner ring and the second outer ring is fixedly connected to the second gear, and the other is fixedly connected to the second fixed plate; the second inner ring and the second outer ring are capable of relative rotation in opposite directions, so that the second damping strip switches between a natural state and a bent state.

[0031] Therefore, when the rotating mechanism is in its natural state, the second damping strip does not undergo elastic deformation and does not generate damping force. The second synchronous swing arm drives the second rack to push the second gear to rotate. The second gear drives the second inner ring to rotate relative to the second outer ring, or drives the second outer ring to rotate relative to the second inner ring, so that one end of the second damping strip is displaced relative to the other end. At this time, the second damping strip gradually changes from its natural state to a bent state. The bent second damping strip generates a damping force. The damping force acts on the second gear, which transmits the damping force to the second synchronous swing arm. The second synchronous swing arm transmits the damping force to the second fixed plate, thereby achieving the hovering of the second shell at a preset angle.

[0032] In some embodiments, the second inner ring is fixedly connected to the second gear, and the second outer ring is fixedly connected to the second fixed plate; the second gear drives the second inner ring to rotate relative to the second outer ring.

[0033] Specifically, the second gear includes second gear teeth, a second connecting rod, and a second fixed shaft. The second connecting rod is fixedly connected to one side of the second gear, and the second gear is rotatably connected to the second fixed shaft, with a portion of the second fixed shaft located outside the other side of the second gear. The second gear teeth are annular external teeth. The outer circumference of the second connecting rod is provided with two fourth limiting grooves. The second gear teeth mesh with the second rack.

[0034] The second damping member further includes a third fixing block and a fourth fixing block, wherein the third fixing block is fixedly connected to the inner circumference of the second inner ring and there are two third fixing blocks, and the fourth fixing block is fixedly connected to the outer circumference of the second outer ring and there are two fourth fixing blocks.

[0035] The fourth fixing block of the second damping member is located in the second limiting groove on the side of the second mounting groove to ensure that the second outer ring is fixed relative to the second fixing plate, that is, the second outer ring is fixedly connected to the second fixing plate. The second connecting rod of the second gear is located in the second inner ring of the second damping member, and the third fixing block is located in the fourth limiting groove of the second connecting rod to ensure that the second inner ring does not rotate relative to the second gear, that is, the second inner ring of the second damping member is fixedly connected to the second gear. The second fixed shaft of the second gear is fixedly connected to the second fixing plate to increase the stability of the second gear when it rotates along the second fixed shaft. Therefore, the second outer ring and the second inner ring can rotate relative to each other, and the second inner ring rotates relative to the second fixing plate, while the second outer ring remains stationary relative to the second fixing plate.

[0036] In some embodiments, the second inner ring is fixedly connected to the second fixing plate, and the second outer ring is fixedly connected to the second gear; the second gear drives the second outer ring to rotate relative to the second inner ring. The second inner ring is fixedly connected to the second fixing plate through an interference fit, a cam-and-groove fit, or the like, and the second outer ring is fixedly connected to the second gear through an interference fit, a cam-and-groove fit, or the like. This achieves relative rotation between the second inner ring and the second outer ring, with the second outer ring rotating relative to the second fixing plate while the second inner ring remains stationary relative to the second fixing plate.

[0037] In some embodiments, the second damping strip is inclined relative to the radial direction of the second damping element. The radial direction of the second damping element refers to the direction from the center of the circle surrounding the second outer ring to any point on the circle surrounding the second outer ring. The second damping strip is inclined within the limited space between the second inner ring and the second outer ring, thereby increasing the length of the second damping strip and thereby increasing the damping force provided by the second damping element.

[0038] In some embodiments, the second damping strip is made of a metal material with a yield strength greater than 1000 MPa. Thus, the second damping strip has sufficient elastic strength to meet the requirements of multiple switching between the bent state and the natural state, ensuring that the second damping element can provide sufficient damping force and has a long service life.

[0039] In some embodiments, multiple second damping strips are evenly distributed between the second inner ring and the second outer ring, and are arranged axially around the second damping member. Providing multiple second damping strips can increase the damping force provided. Evenly distributing the multiple second damping strips makes the damping force more evenly distributed, thereby increasing the stability of the second synchronous swing arm's hovering, thereby increasing the stability of the second fixed plate's hovering, and further increasing the stability of the second housing's hovering.

[0040] In some embodiments, the rotation mechanism further includes a first main swing arm and a second main swing arm. The first main swing arm includes a first swinging body and a first rotating body fixedly connected; the first swinging body is fixedly connected to the first fixed plate, and the first rotating body is slidably and rotationally connected to the support base. The second main swing arm includes a second swinging body and a second rotating body fixedly connected; the second swinging body is fixedly connected to the second fixed plate, and the second rotating body is slidably and rotationally connected to the support base.

[0041] By providing the first main swing arm and the second main swing arm, the first fixing plate and the second fixing plate can be rotated relative to the bearing base, thereby increasing the stability of the rotation of the rotating mechanism.

[0042] In some embodiments, the first fixed plate is provided with a first synchronization groove and a first mounting groove, the first synchronization groove is connected to the first mounting groove, one end of the first synchronization swing arm is located in the first synchronization groove, and the first damping assembly is installed in the first mounting groove; the first rack is located on the side of the first synchronization groove facing the first mounting groove; the first gear includes a first gear tooth, and the first gear tooth is exposed relative to the first synchronization groove.

[0043] After the first synchronous swing arm is installed in the first synchronous slot, the first rack faces the first mounting slot. After the first damping assembly is installed in the first mounting slot, the first damping member and the first gear are stacked, and the first gear teeth of the first gear mesh with the first rack, thereby connecting the first gear and the first damping member. Rotation of the first gear causes elastic deformation of the first damping member. Furthermore, the installation of the first synchronous swing arm in the first synchronous slot and the first damping assembly in the first mounting slot enhances the structural compactness of the rotating mechanism and reduces its size, facilitating the lightweight design of foldable electronic devices.

[0044] The second fixed plate is provided with a second synchronous slide groove and a second mounting groove, the second synchronous slide groove is connected to the second mounting groove, one end of the second synchronous swing arm is located in the second synchronous slide groove, and the second damping assembly is installed in the second mounting groove; the second rack is located on the side of the second synchronous slide groove facing the second mounting groove; the second gear includes second gear teeth, and the second gear teeth are exposed relative to the second synchronous slide groove.

[0045] After the second synchronous swing arm is installed in the second synchronous slot, the second rack faces the second mounting slot. After the second damping assembly is installed in the second mounting slot, the second damping member and the second gear are stacked, and the second gear teeth of the second gear mesh with the second rack, thereby connecting the second gear and the second damping member. Rotation of the second gear causes elastic deformation of the second damping member. Furthermore, the installation of the second synchronous swing arm in the second synchronous slot and the second damping assembly in the second mounting slot enhances the structural compactness of the rotating mechanism and reduces its size, facilitating the lightweight design of foldable electronic devices.

[0046] In some embodiments, the rotating mechanism also includes a synchronous gear installed on the supporting base, and the synchronous gear includes a first synchronous gear, an intermediate synchronous gear and a second synchronous gear arranged in sequence along the width direction of the supporting base and meshing with each other; one end of the first swing arm body is fixedly connected to the first synchronous gear, and one end of the second swing arm body is fixedly connected to the second synchronous gear.

[0047] When the first housing rotates relative to the support base, it drives the first fixed plate to rotate relative to the support base, thereby driving the first synchronous swing arm of the synchronization assembly to rotate and slide within the first synchronization slot, causing the first synchronization gear to rotate. The first synchronization gear drives the intermediate synchronization gear 413a with which it is meshed to rotate. The intermediate synchronization gear 413a, in turn, drives the intermediate synchronization gear 413b to rotate in opposite directions. The second synchronization gear meshes with the intermediate synchronization gear 413b, causing the second synchronization gear to rotate as well, driving the second synchronization swing arm to rotate relative to the first synchronization swing arm.

[0048] Similarly, rotation of the second housing relative to the support base drives the second fixed plate to rotate relative to the support base, thereby driving the second synchronous swing arm of the synchronizer assembly to rotate and slide within the second synchronous slot, causing the second synchronizer gear to rotate. The second synchronizer gear drives the meshed intermediate synchronizer gear 413b to rotate. The intermediate synchronizer gear 413b drives the intermediate synchronizer gear 413a to rotate, with the intermediate synchronizer gear 413a rotating in the opposite direction to the intermediate synchronizer gear 413b. The first synchronizer gear meshes with the intermediate synchronizer gear 413a, causing the first synchronizer gear to rotate as well, driving the first synchronizer swing arm to rotate relative to the second synchronizer swing arm.

[0049] In some embodiments, the first fixing plate further comprises a first receiving slot; the second fixing plate further comprises a second receiving slot; the first receiving slot and the second receiving slot correspond to and communicate with each other, forming a receiving space within which the supporting base is located. This increases the structural compactness of the rotating mechanism and reduces its volume, thereby facilitating a lightweight design for the foldable electronic device.

[0050] The second aspect of the present application provides a foldable electronic device, comprising a first shell, a second shell, a display screen and a rotating mechanism as described in any one of the first aspects of the present application. The rotating mechanism is connected between the first shell and the second shell, and the display screen is installed on the first shell, the second shell and the rotating mechanism. When the rotating mechanism rotates, the first shell and the second shell rotate relative to each other, thereby driving the display screen to fold or unfold.

[0051] The present application utilizes the elastic deformation of the first damping member to provide damping force for the first synchronous swing arm, so that the first synchronous swing arm drives the first fixed plate to hover, and the first fixed plate drives the first shell to hover, so that the user can obtain a good damping feeling.

[0052] In the present application, the first damping component is installed on the first fixed plate. Compared with installing the first damping component on the bearing component, the thickness dimension of the bearing base is reduced, thereby reducing the thickness dimension of the entire rotating mechanism. The first damping component is installed on the first fixed plate, which makes more space for the components installed on the bearing base, making it easier to install the remaining components on the bearing base, and the precision requirements are relatively reduced, which helps to reduce costs. In addition, compared with the damping component set on the bearing base, the first damping component provided in this embodiment does not need to use multiple springs and connecting rods and other components, and has a relatively simple structure, which reduces the number of parts of the rotating mechanism, thereby reducing the difficulty of assembly, reducing the overall weight of the rotating mechanism, and thus reducing costs. In addition, the present application uses the elastic deformation of the first damping member to provide a damping force for the first synchronous swing arm, so that the first synchronous swing arm drives the first fixed plate to hover, and the first fixed plate drives the first shell to hover, so that the user can get a good damping feeling. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0054] Figure 1 This is a schematic structural diagram of the foldable electronic device provided in an embodiment of the present application in a first state.

[0055] Figure 2 This is a schematic structural diagram of the foldable electronic device provided in an embodiment of the present application in the second state.

[0056] Figure 3 yes Figure 2 Schematic diagram of the exploded structure of the foldable electronic device shown.

[0057] Figure 4 yes Figure 3 The structural diagram of the rotating mechanism is shown in FIG.

[0058] Figure 5 yes Figure 4 Schematic diagram of the exploded structure of the rotating mechanism shown.

[0059] Figure 6 yes Figure 4 Schematic diagram of the structure of the fixed component shown in.

[0060] Figure 7 yes Figure 4 The structural diagram of the supporting base is shown in FIG.

[0061] Figure 8 yes Figure 4 The structural diagram of the swing arm assembly is shown in .

[0062] Figure 9 It is a schematic diagram of the split structure of the supporting base, swing arm assembly and fixed assembly.

[0063] Figure 10 yes Figure 4 The structural diagram of the synchronization component is shown in .

[0064] Figure 11 It is a schematic diagram of the split structure of the supporting base, fixed components and synchronous components.

[0065] Figure 12 It is a structural diagram of the assembly of the bearing base, the fixed component and the synchronous component, wherein the rotating mechanism is in a folded state.

[0066] Figure 13a yes Figure 4 Schematic diagram of the structure of the first damping component shown in .

[0067] Figure 13b yes Figure 4 The structural schematic diagram of the second damping component is shown in .

[0068] Figures 14a to 14e yes Figure 13a The state change diagram of the first damping member is shown in .

[0069] Figure 15 It is a structural diagram of the damping component installed on the fixed component, wherein the rotating mechanism is in a folded state.

[0070] Figure 16This is another structural diagram in which the damping mechanism is installed on the fixed component, wherein the rotating mechanism is in the deployed state.

[0071] Figure 17 yes Figure 4 , a schematic structural diagram of a rotating structure in an expanded state is shown, wherein the first damping strip of the first damping member is in a first natural state.

[0072] Figure 18 yes Figure 4 is a structural schematic diagram of the rotating structure during the process of switching from the unfolded state to the folded state, wherein the first damping strip of the first damping member is bent in the counterclockwise direction.

[0073] Figure 19 yes Figure 4 , a schematic structural diagram of the rotating structure shown in FIG. 1 is in a folded state, wherein the first damping strip of the first damping member is in a second natural state.

[0074] Figure 20 yes Figure 4 is a structural schematic diagram of the process of the rotating structure switching from the folded state to the unfolded state, wherein the first damping strip of the first damping member is bent in the clockwise direction. DETAILED DESCRIPTION

[0075] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0076] The rotation mechanisms used in existing foldable electronic devices include components such as a relatively complex damping assembly, which is difficult to assemble and weighs a lot and is bulky, significantly impacting the slimming and lightening design of the electronic device. The rotation mechanism and foldable electronic device provided in the embodiments of the present application have a relatively simple damping assembly structure, which is assembled on a fixed assembly, thus reducing the assembly difficulty, the weight and volume of the rotation mechanism, and facilitating the slimming and lightening design of the electronic device.

[0077] See also Figure 1 and Figure 2 , Figure 1 1 is a schematic structural diagram of a foldable electronic device 1000 provided in an embodiment of the present application in a first state. Figure 2 3 is a schematic structural diagram of the foldable electronic device 1000 provided in an embodiment of the present application in the second state.

[0078] Figure 1 The foldable electronic device 1000 is shown in a folded state. Figure 2 The foldable electronic device 1000 is shown in an unfolded state. Figure 2The unfolded angle of the foldable electronic device 1000 is 180 degrees. The foldable electronic device 1000 includes, but is not limited to, a cell phone, a notebook computer, a tablet computer, a personal computer, a personal digital assistant, a wearable device, or a mobile device. In the embodiments of the present application, the foldable electronic device 1000 is described as a cell phone.

[0079] It should be noted that the angles illustrated in the embodiments of this application are allowed to have slight deviations. For example, Figure 1 The unfolding angle of the foldable electronic device 1000 shown is 90 degrees, which means that it can be 90 degrees or approximately 90 degrees, such as 80 degrees, 85 degrees, 95 degrees or 100 degrees. Figure 2 The unfolding angle of the foldable electronic device 1000 shown as 180 degrees means that it can be 180 degrees or approximately 180 degrees, such as 170 degrees, 175 degrees, 185 degrees, and 190 degrees. The angles described below as examples can be understood in the same way.

[0080] For ease of description, the width direction of the foldable electronic device 1000 is defined as the X direction, the length direction of the foldable electronic device 1000 is defined as the Y direction, and the thickness direction of the foldable electronic device 1000 is defined as the Z direction. The X direction, the Y direction, and the Z direction are perpendicular to each other.

[0081] See also Figure 3 , Figure 3 yes Figure 2 Schematic diagram of the exploded structure of the foldable electronic device shown.

[0082] The foldable electronic device 1000 includes a main body 200 and a display screen 300, which is mounted on the main body 200. The display screen 300 includes a display surface and a mounting surface, which are arranged opposite each other. The display surface is used to display text, images, videos, etc. The display screen 300 includes a first display portion 310, a second display portion 320, and a third display portion 330. The third display portion 330 is located between the first display portion 310 and the second display portion 320. The third display portion 330 is flexible and can bend along the X direction. The first display portion 310 and the second display portion 320 are actually bendable even when not fixed.

[0083] In this embodiment, the display screen 300 uses a flexible display screen, for example, an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode or active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode (MLED) display screen, a micro organic light-emitting diode (MLED) display screen, a micro organic light-emitting diode (MLED) display screen, or a quantum dot light-emitting diode (QLED) display screen.

[0084] The main body 200 includes a first shell 210, a second shell 220, and a rotation mechanism 100. A first receiving cavity (not shown) is provided in the second shell 220, and the first and second receiving cavities are connected to form a receiving cavity. The rotation mechanism 100 is installed in the receiving cavity and is fixedly connected to the first and second shells 210, 220 to achieve a rotational connection between the first and second shells 210, 220. The first and second shells 210, 220 can rotate relative to each other via the rotation mechanism 100, allowing the main body 200 to switch between a folded state and an unfolded state.

[0085] The side of the first shell 210 and the second shell 220 facing away from the display screen 300 is the outer surface of the electronic device, and the side supporting the display screen 300 is the inner side. In fact, the inner sides of the first shell 210 and the second shell 220 are provided with a supporting part, which encapsulates a accommodating groove. The display screen is installed on the supporting part and supports the flexible display screen 300.

[0086] The display screen 300 is mounted on the main body 200, with the mounting surface fixedly connected to the main body 200. Specifically, the first housing 210 supports the first display portion 310, and the second housing 220 supports the second display portion 320. In other words, the first display portion 310 is mounted on the first housing 210, and the second display portion 320 is mounted on the second housing 220. The rotation mechanism 100 is positioned opposite the third display portion 330 to achieve curved display screen.

[0087] The relative rotation of the first housing 210 and the second housing 220 causes the main body 200 to be in the folded state. This means that the first housing 210 and the second housing 220 rotate via the rotation mechanism 100 and approach each other, with the surfaces of the first housing 210 and the second housing 220 supporting the display screen 300 facing each other. During use, when the main body 200 is in the fully folded state, the display screen 300 mounted on the first housing 210 and the second housing 220 are folded, and the display surface of the display screen 300 located on the first display portion 310 and the display surface located on the second display portion 320 partially or fully contact each other.

[0088] The first shell 210 and the second shell 220 rotate relative to each other so that during the unfolding process of the main body 200 (the first shell 210 and the second shell 220 can remain at any angle, such as a 90-degree angle or a 120-degree angle between the first shell 210 and the second shell 220, that is, the display screen 300 is in a semi-expanded state), the first shell 210 and the second shell 220 rotate via the rotating mechanism 100 and move away from each other, and the angle between the first shell 210 and the second shell 220 becomes larger and larger until the first shell 210 and the second shell 220 rotate relative to each other so that the main body 200 is unfolded and in the unfolded state. The angle between the first shell 210 and the second shell 220 can be close to or equal to 180 degrees. The first shell 210 and the second shell 220 are generally flat. At the same time, the first shell 210 and the second shell 220 are relatively moved away from the display screen 300 and unfolded until the foldable electronic device 1000 is in the unfolded state, wherein the first shell 210 and the second shell 220 are relatively moved away from the display screen 300 and further unfolded until the foldable electronic device 1000 is in the unfolded state.

[0089] The first shell 210, the second shell 220 and the rotating mechanism 100 are arranged in sequence along the X direction, and the sum of the dimensions between the three is the dimension of the main body 200 in the X direction (including assembly tolerance and assembly gaps between the three). The dimension of the main body 200 in the X direction is the same as the dimension of the display screen 300 and the electronic device along the X direction, and the same here includes the allowable tolerance range. The first shell 210, the second shell 220 and the rotating mechanism 100 have the same dimensions along the Y direction, and the same dimensions can allow for assembly or production tolerances. The dimensions of the first shell 210, the second shell 220 and the rotating mechanism 100 along the Y direction are the dimensions of the main body 200 in the Y direction, and the dimensions of the main body 200 in the Y direction are the same as the dimensions of the display screen 300 and the foldable electronic device 1000 along the Y direction. Of course, the same here can also allow a small amount of deviation (assembly and production tolerances).

[0090] See Figure 2 and Figure 3The first shell 210 and the second shell 220 rotate relative to each other through the rotating mechanism 100. When the foldable electronic device 1000 is in the unfolded state, the display screen 300 has a large display area, realizing the large-screen display and operation functions of the foldable electronic device 1000, and improving the user experience. Figure 1 and Figure 3 When the foldable electronic device 1000 is in a folded state, the display screen 300 is located between the first shell 210 and the second shell 220. The first shell 210 and the second shell 220 protect the display surface of the display screen 300, which can greatly reduce the probability of the display screen 300 being damaged. The overall size is reduced, making it easy to carry.

[0091] A first receiving cavity is defined on the side of the first housing 210 facing the second housing 220. The opening of the first receiving cavity is located on the top surface of the first housing. The first receiving cavity is recessed from the top surface to the bottom surface of the first housing 210 and extends through the right side of the first housing 210. A second receiving cavity is defined on the side of the second housing 220 facing the first housing 210. The opening of the second receiving cavity is located on the top surface of the second housing 220. The second receiving cavity is recessed from the top surface to the bottom surface of the second housing 220 and extends through the side of the second housing 220 facing the first housing 210.

[0092] When the foldable electronic device 1000 is in the unfolded state, that is, when the angle between the first housing 210 and the second housing 220 is 180 degrees, the first and second housing cavities together form a housing chamber. Part of the rotation mechanism 100 is mounted in the first housing cavity of the first housing 210, and part of the rotation mechanism 100 is mounted in the second housing cavity of the second housing 220.

[0093] It should be noted that the directional terms such as “top”, “bottom”, “left”, “right”, “front” and “back” used in the embodiment of the present application to describe the foldable electronic device 1000 are mainly based on the foldable electronic device 1000 in the attached Figure 2 as well as Figure 4 The display orientation is explained in the figure, with the positive direction of the Z axis as the "top" and "upper", the negative direction of the Z axis as the "bottom" and "lower", the positive direction of the X axis as the "right", the negative direction of the X axis as the "left", the positive direction of the Y axis as the "back", and the negative direction of the Y axis as the "front". It does not constitute a limitation on the orientation of the foldable electronic device 1000 in actual application scenarios.

[0094] See Figure 4 and Figure 5 , Figure 4 yes Figure 3 A schematic structural diagram of the rotating mechanism 100 is shown in FIG; Figure 5 yes Figure 4 Schematic diagram of the exploded structure of the rotating mechanism 100 is shown.

[0095] The rotating mechanism 100 includes a fixed component 10, a supporting base 20, a swing arm component 30, a synchronization component 40 and a damping component 50. The swing arm component 30 and the synchronization component 40 are arranged at intervals along the Y-axis direction and are rotatably connected to the supporting base 20. The fixed component 10 is fixedly connected to the swing arm component 30, and the fixed component 10 is slidably connected to the synchronization component 40. The damping component 50 is rotationally connected to the fixed component 10 and meshingly connected to the synchronization component 40. The third display part of the display screen is opposite to the swing arm component 30 and the fixed component 10. The fixed component 10 is respectively connected to the first shell 210 and the second shell 220. When the fixed component 10 rotates relative to the supporting base 20, it drives the swing arm component 30 and the synchronization component 40 to rotate relative to the supporting base 20, thereby realizing the rotation of the rotating mechanism 100 to achieve the bending of the display screen. The damping component 50 provides a damping force during the rotation of the rotating mechanism 100.

[0096] It should be noted that Figure 4 and Figure 5 Only part of the structure of the rotating mechanism 100 along the positive direction of the Y-axis is shown. The fixed component 10, the swing arm component 30, the synchronous component 40 and the damping component 50 are a group of substructures. The entire rotating mechanism 100 has at least two groups of the above-mentioned substructures. In other words, a group of the above-mentioned substructures is provided on the front and rear sides of the supporting base 20, and the two groups of substructures are mirror-symmetrical. In other embodiments, an additional group of substructures is provided between the two groups of substructures, and the additional substructure is located in the middle of the supporting base 20, thereby enhancing the stability of the rotating mechanism 100. In other embodiments, one, four or five groups of the above-mentioned substructures can also be provided. The number of the substructures can be adjusted according to actual conditions. In one embodiment, the fixed components 10 of the two groups of the above-mentioned substructures can be integrally formed, that is, the synchronous components 40, the damping components 50 and the swing arm components 30 of the two groups of substructures are all connected to the same fixed component 10.

[0097] In one set of the above-mentioned substructures, the fixing assembly 10 is installed in a receiving chamber formed by the first receiving chamber of the first shell and the second receiving chamber of the second shell. Specifically, the first fixing plate 11 is located in the first receiving chamber and fixedly connected to the wall of the first receiving chamber. The second fixing plate 12 is located in the second receiving chamber and fixedly connected to the wall of the second receiving chamber. The fixing assembly 10 includes a first fixing plate 11 and a second fixing plate 12, which are located on opposite sides of the support base 20 and are symmetrical about the support base 20. The swing arm assembly 30 includes a first main swing arm 31 and a second main swing arm 32, which are symmetrical about the support base 20. The first main swing arm 31 and the first fixing plate 11 are installed on one side of the support base 20, and the second main swing arm 32 and the second fixing plate 12 are installed on the other side of the support base 20. One end of the first main swing arm 31 is rotatably and slidably connected to the support base 20, and the other end of the first main swing arm 31 is fixedly connected to the first fixing plate 11. When the first fixing plate 11 rotates relative to the support base 20, it drives the first main swing arm 31 to rotate relative to the support base 20. One end of the second main swing arm 32 is connected to the support base 20 in a rotating and sliding manner, while the other end of the second main swing arm 32 is fixedly connected to the second fixing plate 12. When the second fixing plate 12 rotates relative to the support base 20, it drives the second main swing arm 32 to rotate relative to the support base 20.

[0098] The synchronization assembly 40 includes a synchronization gear 41, a first synchronization swing arm 42, and a second synchronization swing arm 43. The first synchronization swing arm 42 and the second synchronization swing arm 43 are symmetrical about the support base 20. The synchronization gear 41 is mounted on the support base 20 and is arranged in sequence with the swing arm assembly 30 along the Y-axis direction of the support base 20. The first synchronization swing arm 42 and the second synchronization swing arm 43 are respectively fixedly connected to opposite sides of the synchronization gear 41. The first synchronization swing arm 42 extends to slide with the first fixed plate 11, and the second synchronization swing arm 43 extends to slide with the second fixed plate 12.

[0099] The damping assembly 50 includes a first damping assembly 51 and a second damping assembly 52. ​​The first damping assembly 51 is mounted on the first fixed plate 11, is rotatably connected to the first fixed plate 11, and is meshedly connected to the first synchronous swing arm 42. The second damping assembly 52 is mounted on the second fixed plate 12, is rotatably connected to the second fixed plate 12, and is meshedly connected to the second synchronous swing arm 43.

[0100] During the rotation of the foldable electronic device 1000, the damping assembly 50 provides a damping force, allowing users to experience a better damping feel while enabling the foldable electronic device 1000 to hover at a preset angle, thereby enhancing the user experience. The "preset angle" here refers to the angle between the first housing 210 and the second housing 220 when the foldable electronic device is hovering, that is, the angle between the first fixing plate 11 and the second fixing plate 12. The preset angle ranges from 0 to 180 degrees.

[0101] When the first fixed plate 11 and the second fixed plate 12 rotate relative to the supporting base 20, the first fixed plate 11 drives the first synchronous swing arm 42 to slide relative to the first fixed plate 11, and the first synchronous swing arm 42 drives the first damping assembly 51 to rotate to provide a damping force for the first fixed plate 11. At the same time, the second fixed plate 12 drives the second synchronous swing arm 43 to slide relative to the second fixed plate 12, and the second synchronous swing arm 43 drives the second damping assembly 52 to rotate to provide a damping force for the second fixed plate 12. The damping force allows the user to experience a better hand feel, thereby improving the user experience. The synchronous gear 41 ensures the synchronization of the first synchronous swing arm 42 and the second synchronous swing arm 43, thereby achieving synchronous rotation of the first fixed plate 11 and the second fixed plate 12, and further achieving synchronous rotation of the first shell and the second shell.

[0102] See Figure 6 , Figure 6 yes Figure 4 A schematic structural diagram of the fixing assembly 10 is shown in FIG.

[0103] The first fixing plate 11 is generally rectangular and is provided with a first receiving slot 111, a first fixing slot 112, a first synchronous sliding slot 113, and a first mounting slot 114. The first receiving slot 111 is used to mount a portion of the support base 20, the first fixing slot 112 is used to mount the first main swing arm 31, the first synchronous sliding slot 113 is used to mount the first synchronous swing arm 42, and the first mounting slot 114 is used to mount the first damping assembly 51.

[0104] The first receiving groove 111 is located on the side of the first fixing plate 11 facing the second fixing plate 12. The opening of the first receiving groove 111 is located on the top surface of the first fixing plate 11. The first receiving groove 111 is recessed from the top surface to the bottom surface of the first fixing plate 11 and passes through the right side of the first fixing plate 11. The left side refers to the negative side of the X-axis, the right side refers to the positive side of the X-axis, the top surface refers to the surface located in the positive direction of the Z-axis, and the bottom surface refers to the surface located in the negative direction of the Z-axis.

[0105] The first fixing groove 112 is located on the side of the first fixing plate 11 facing the second fixing plate 12. The first fixing groove 112 and the first receiving groove 111 are arranged sequentially along the X-direction, with the first fixing groove 112 located to the left of the first receiving groove 111. The opening of the first fixing groove 112 is located on the top surface of the first fixing plate 11. The first fixing groove 112 is recessed from the top surface of the first fixing plate 11 toward the bottom surface and penetrates the groove wall of the first receiving groove 111, thereby communicating with the first receiving groove 111.

[0106] The first synchronous groove 113 is located on the side of the first fixed plate 11 facing the second fixed plate 12. The first synchronous groove 113 and the first receiving groove 111 are arranged in sequence along the X-axis, and the first synchronous groove 113 is located on the left side of the first receiving groove 111. The opening of the first synchronous groove 113 is located on the groove wall of the first receiving groove 111. In other words, the first synchronous groove 113 is connected to the first receiving groove 111. The first synchronous groove 113 is recessed from the groove wall of the first synchronous groove 113 toward the left side of the first fixed plate 11. Here, the left side refers to the negative direction of the X-axis.

[0107] The first mounting groove 114 and the first synchronous slide groove 113 are arranged in sequence along the Y-axis direction, and the first mounting groove 114 is connected to the first synchronous slide groove 113. The opening of the first mounting groove 114 is located on the top surface of the first fixed plate 11. The first mounting groove 114 is recessed from the top surface to the bottom surface of the first fixed plate 11. A first limiting groove 115 is provided on the side surface of the first mounting groove 114, and the first limiting groove 115 extends along the Z-axis direction and passes through the top surface of the first fixed plate 11. There are two first limiting grooves 115, and the two first limiting grooves 115 are opposite to each other along the X-axis direction. A first positioning groove (not shown) is provided on the bottom surface of the first mounting groove 114, and the first positioning groove is recessed inwardly along the bottom surface of the first mounting groove 114. The first mounting groove 114 is used to limit the first damping assembly 51.

[0108] The second fixing plate 12 has the same structure as the first fixing plate 11. The second fixing plate 12 is provided with a second receiving groove 121, a second fixing groove 122, a second synchronous slide groove 123, and a second mounting groove 124. The second receiving groove 121 is used to mount a portion of the supporting base 20, the second fixing groove 122 is used to mount the second main swing arm 32, the second synchronous slide groove 123 is used to mount the second synchronous swing arm 43, and the second mounting groove 124 is used to mount the second damping assembly 52. ​​Two second limiting grooves 125 are provided on the side surface of the second mounting groove 124, and a second positioning groove (not shown) is provided on the bottom surface of the second mounting groove 124. The second limiting groove 125 is used to limit the second damping assembly 52. ​​The second mounting groove 124 is connected to the second synchronous slide groove 123.

[0109] When the foldable electronic device is in the unfolded state, that is, when the angle between the first fixing plate 11 and the second fixing plate 12 is 180 degrees, the first receiving groove 111 and the second receiving groove 121 enclose a receiving space 13. The first receiving groove 111 and the second receiving groove 121 are both arc-shaped grooves, which enclose an arc-shaped receiving space 13. The receiving space 13 is used to accommodate the supporting base 20.

[0110] See Figure 7 , Figure 7 yes Figure 4 A structural schematic diagram of the supporting base 20 is shown in FIG.

[0111] The support base 20 is elongated, with its length parallel to the Y-axis. The support base 20 comprises a first base portion and a second base portion, which are arranged sequentially along the Y-axis. The first base portion is located at the front of the support base 20, while the second base portion is located at the rear.

[0112] It should be noted that the first and second base parts can be mirror-symmetrical to improve the symmetry of the support base 20, simplify the overall structure of the support base 20, improve the structural stability of the support base 20, and reduce the processing cost of the support base 20. The basic structure of each component in the second base part, the connection relationship between the components, and the connection relationship between the components and components outside the assembly can all refer to the relevant description of the first base part.

[0113] The first base portion and the second base portion each connect to one of the aforementioned substructures. In other embodiments, the first base portion and the second base portion may each connect to two groups of the aforementioned substructures. Alternatively, the first base portion and the second base portion may together connect to three groups of the aforementioned substructures. Those skilled in the art can configure these configurations based on actual needs.

[0114] The first part of the base of the supporting base 20 includes a first connecting section 21 and a second connecting section 22 connected in sequence along the Y-axis direction. The first connecting section 21 is provided with a receiving groove 211, a first avoidance groove 212 and a second avoidance groove 213. The first avoidance groove 212 and the second avoidance groove 213 are opposite to each other along the X-axis direction. The first avoidance groove 212 and the second avoidance groove 213 are respectively located on the side walls of the receiving groove 211 and are both connected to the receiving groove 211. The surface of the second connecting section 22 is provided with a first sliding groove 221 and a second sliding groove 222. The first sliding groove 221 and the second sliding groove 222 are opposite to each other along the X-axis direction and are staggered in the Y-axis direction. The bottom wall surfaces of the first sliding groove 221 and the second sliding groove 222 are both arc-shaped, and the extension direction is parallel to the X-axis direction.

[0115] When the foldable electronic device is in the unfolded state, the supporting base 20 is located within the receiving space 13 enclosed by the first receiving groove 111 and the second receiving groove 121 of the fixing assembly 10. The surface of the supporting base 20 that contacts the bottom wall of the receiving space 13 is an arcuate surface, which is configured to mate with the arcuate bottom wall of the receiving space 13. When the foldable electronic device is in the folded state, the supporting base 20 is at least partially located outside the receiving space 13.

[0116] See Figure 8 , Figure 8 yes Figure 4 A schematic structural diagram of the swing arm assembly 30 is shown in FIG.

[0117] The first main swing arm 31 includes a first swinging member 311 and a first rotating member 312. In this embodiment, the first swinging member 311 is a rectangular, thin plate-like structure. The first rotating member 312 is fixedly connected to the bottom surface of the first swinging member 311 and at least partially extends to the side of the first swinging member 311 located in the positive direction of the X-axis. The first rotating member 312 includes a first rotating surface. The first rotating surface is arcuate and is configured to mate with the arcuate bottom wall of the first sliding groove 221.

[0118] The structure of the second main swing arm 32 is similar to that of the first main swing arm 31. The second main swing arm 32 includes a second swinging member 321 and a second rotating member 322. The second rotating member 322 is fixedly connected to the bottom surface of the second swinging member 321 and at least partially extends to the side of the second swinging member 321 located in the negative direction of the X-axis. The second rotating member 322 includes a second rotating surface 323. The second rotating surface 323 is arcuate and is designed to mate with the arcuate bottom wall of the second sliding slot 222.

[0119] See Figure 9 , Figure 9 It is a schematic diagram of the split structure of the supporting base 20, the swing arm assembly 30 and the fixing assembly 10.

[0120] The first swinging member 311 of the first main swinging arm 31 is mounted in the first fixing slot 112 of the first fixing plate 11 and is fixedly connected to the slot wall of the first fixing slot 112. The first rotating member 312 of the first main swinging arm 31 is located in the first sliding slot 221. The first rotating surface matches the slot wall of the first sliding slot 221, and the first rotating member 312 can slide and rotate within the first sliding slot 221.

[0121] The second swinging body 321 of the second main swing arm 32 is mounted in the second fixed groove 122 of the second fixed plate 12 and is fixedly connected to the groove wall of the second fixed groove 122. The second rotating body 322 of the second main swing arm 32 is located in the second sliding groove 222, and the second rotating surface 323 matches the groove wall of the second sliding groove 222. The second rotating body 322 can slide and rotate in the second sliding groove 222. In this embodiment, the second rotating body 322 and the first rotating body 312 are staggered in the Y-axis direction, so that the first rotating body 312 and the second rotating body 322 respectively cooperate with the first sliding groove 221 and the second sliding groove 222, and can avoid mutual interference between the first rotating body 312 and the second rotating body 322, thereby increasing the compactness of the rotating mechanism 100. In other embodiments, the second rotating body 322 and the first rotating body 312 are arranged side by side and opposite to each other in the X-axis direction.

[0122] In this embodiment, the first fixed plate 11 is fixedly connected to the first housing, and the second fixed plate 12 is fixedly connected to the second housing. The first swinging member 311 of the first main swing arm 31 is fixedly connected to the first fixed plate 11, while the first rotating member 312 of the first main swing arm 31 is slidably and rotatably connected to the support base 20. The second swinging member 321 of the second main swing arm 32 is fixedly connected to the second fixed plate 12, while the second rotating member 322 of the second main swing arm 32 is slidably and rotatably connected to the support base 20.

[0123] When the first housing rotates relative to the support base 20, it can drive the first fixed plate 11 to rotate relative to the support base 20, thereby driving the first swinging body 311 of the first main swing arm 31 to rotate relative to the support base 20, and causing the first rotating body 312 to rotate and slide within the first sliding groove 221. When the second housing rotates relative to the support base 20, it can drive the second fixed plate 12 to rotate relative to the support base 20, thereby driving the second swinging body 321 of the second main swing arm 32 to rotate relative to the support base 20, and causing the second rotating body 322 to rotate and slide within the second sliding groove 222. The rotation direction of the first fixed plate 11 is opposite to that of the second fixed plate 12, and the rotation direction of the first swinging body 311 of the first main swing arm 31 is opposite to that of the second swinging body 321 of the second main swing arm 32.

[0124] For example, when the rotation mechanism 100 switches from the unfolded state to the folded state, the first fixed plate 11 and the first swinging member 311 of the first main swing arm 31 rotate clockwise, while the second fixed plate 12 and the second swinging member 321 of the second main swing arm 32 rotate counterclockwise. Specifically, as the first fixed plate 11 and the second fixed plate 12 rotate toward each other, the first fixed plate 11 drives the first main swing arm 31 to rotate clockwise, and the first rotating member 312 rotates clockwise within the first sliding groove 221 and slides along the first sliding groove 221. The second fixed plate 12 drives the second main swing arm 32 to rotate counterclockwise, and the second rotating member 322 rotates counterclockwise within the second sliding groove 222 and slides along the second sliding groove 222.

[0125] When the rotation mechanism 100 switches from the folded state to the unfolded state, the first fixed plate 11 and the first swinging member 311 of the first main swing arm 31 rotate counterclockwise, while the second fixed plate 12 and the second swinging member 321 of the second main swing arm 32 rotate clockwise. As the first fixed plate 11 and the second fixed plate 12 rotate away from each other, the first fixed plate 11 drives the first main swing arm 31 to rotate counterclockwise, and the first rotating member 312 rotates counterclockwise and slides within the first sliding slot 221. The second fixed plate 12 drives the second main swing arm 32 to rotate clockwise, and the second rotating member 322 rotates clockwise and slides within the second sliding slot 222.

[0126] When the rotating mechanism 100 is in the deployed state, the first fixing plate 11 and the second fixing plate 12 are deployed relative to the support base 20, and the first main swing arm 31 and the second main swing arm 32 are deployed relative to the support base 20. The top surface of the first fixing plate 11, the top surface of the second fixing plate 12, the top surface of the first swinging member 311 of the first main swinging member 31, and the top surface of the second swinging member 321 of the second main swinging member 32 are substantially coplanar and collectively support the display screen 300, ensuring the stability of the display screen 300 and enabling normal display.

[0127] In this embodiment, by providing a first fixing plate 11 and a second fixing plate 12, with the first fixing plate 11 fixedly connected to the first housing and the second fixing plate 12 fixedly connected to the second housing, the connection strength between the fixing assembly 10 and the housing is increased, thereby improving the rotational stability of the foldable electronic device 1000. Furthermore, by providing a first main swing arm 31 and a second main swing arm 32, the first fixing plate 11 and the second fixing plate 12 are rotated relative to the supporting base 20, thereby improving the rotational stability of the rotating mechanism 100.

[0128] See Figure 10 , Figure 10 yes Figure 4 A schematic structural diagram of the synchronization component 40 is shown in FIG.

[0129] The synchronization assembly 40 is mounted on the first connecting section 21 of the first base portion of the supporting base 20 and is slidably connected to the first housing and the second housing to achieve synchronous rotation of the first housing and the second housing.

[0130] The synchronization assembly 40 includes a synchronization gear 41, a first synchronization swing arm 42, a second synchronization swing arm 43, a first synchronization block 44, and a second synchronization block 45. The synchronization gear 41 includes a first synchronization gear 411, an intermediate synchronization gear 413, and a second synchronization gear 412, arranged sequentially along the X-axis and meshing with each other. First synchronization gear 411 is provided with a first connecting shaft 414 at each end, or the first synchronization gear 411 is fixedly mounted on the first connecting shaft 414. Second synchronization gear 412 is provided with a second connecting shaft 415 at each end, or the second synchronization gear 412 is fixedly mounted on the second connecting shaft 415. Intermediate synchronization gear 413 is provided with an intermediate connecting shaft 416 at each end, or the intermediate synchronization gear 413 is fixedly mounted on the intermediate connecting shaft 416. In this embodiment, there are two intermediate synchronization gears 413, namely 413a and 413b. In other embodiments, there may be four, six, or other intermediate synchronization gears 413.

[0131] The first synchronous swing arm 42 includes a first swing arm body 421 and a first rack 422. One end of the first swing arm body 421 is fixedly connected to the first synchronous gear 411. The width direction of the first swing arm body 421 is the same as the axial direction of the first synchronous gear 411, and the axial direction of the first synchronous gear 411 is parallel to the Y-axis direction. The first rack 422 is fixedly connected to the first swing arm body 421, and the first rack 422 is located on the negative side of the first swing arm body 421 along the Y-axis. The first rack 422 includes a plurality of first teeth (not marked in the figure), and the plurality of first teeth are arranged in sequence along the X-axis direction. It can be understood that the first rack 422 is directly formed on one side of the first swing arm body 421, that is, the plurality of first teeth are directly provided on one side of the first swing arm body 421.

[0132] The second synchronous swing arm 43 has the same structure as the first synchronous swing arm 42. The second synchronous swing arm 43 includes a second swing arm body 431 and a second rack 432. One end of the second swing arm body 431 is fixedly connected to the second synchronous gear 412. The width direction of the second swing arm body 431 is the same as the axial direction of the second synchronous gear 412, and the axial direction of the second synchronous gear 412 is parallel to the Y-axis direction. The second rack 432 is fixedly connected to the second swing arm body 431. The second rack 432 is located on the negative side of the second swing arm body 431 along the Y-axis. The second rack 432 includes a plurality of second teeth (not marked in the figure), and the plurality of second teeth are arranged in sequence along the X-axis direction. It can be understood that the second rack 432 is directly formed on one side of the second swing arm body 431, that is, the plurality of second teeth are directly provided on one side of the second swing arm body 431.

[0133] The first synchronization block 44 is provided with four first through-holes 441 penetrating along the Y-axis direction, and the second synchronization block 45 is provided with four second through-holes 451 penetrating along the Y-axis direction. The first synchronization block 44 and the second synchronization block 45 can be the same or different, and this application does not limit this.

[0134] See Figure 11 and Figure 12 , Figure 11 It is a schematic diagram of the split structure of the supporting base 20, the fixing component 10 and the synchronization component 40. Figure 12 It is a schematic structural diagram of the assembly of the supporting base 20, the fixing assembly 10 and the synchronization assembly 40, wherein the rotating mechanism 100 is in a folded state.

[0135] The synchronous gear 41 is mounted within the receiving groove 211 of the first connecting section 21 of the supporting base 20. The first synchronous block 44, the synchronous gear 41, and the second synchronous block 45 are arranged sequentially along the Y-axis. One end of the first connecting shaft 414 of the first synchronous gear 411, the intermediate connecting shafts 416 of the two intermediate synchronous gears 413a and 413b, and the second connecting shaft 415 of the second synchronous gear 412 are positioned within the four first through-holes 441 of the first synchronous block 44 and are rotatable therein. The other ends of the first connecting shaft 414 of the first synchronous gear 411, the intermediate connecting shafts 416 of the two intermediate synchronous gears 413a and 413b, and the second connecting shaft 415 of the second synchronous gear 412 are positioned within the four second through-holes 451 of the second synchronous block 45 and are rotatable therein. The first synchronous gear 411, the two intermediate synchronous gears 413a and 413b, and the second synchronous gear 412 mesh in sequence to achieve transmission. The first synchronous block 44 and the second synchronous block 45 restrict the movement of the synchronous gear 41 along the Y-axis direction, so that the synchronous gear 41 rotates smoothly.

[0136] The first synchronous swing arm 42 and the second synchronous swing arm 43 are respectively located on the left and right sides of the supporting base 20. The first synchronous swing arm 42 and the second synchronous swing arm 43 are symmetrical with respect to the supporting base 20. The end of the first swing arm body 421 away from the first synchronous gear 411 extends from the first avoidance groove 212 to the first synchronous slide groove 113 of the first fixed plate 11, and is able to slide along the X direction in the first synchronous slide groove 113. The end of the second swing arm body 431 away from the second synchronous gear 412 extends from the second avoidance groove 213 to the second synchronous slide groove 123 of the second fixed plate 12, and is able to slide in the second synchronous slide groove 123. The first rack 422 of the first swing arm body 421 faces the first mounting groove 114, and the second rack 432 of the second swing arm body 431 faces the second mounting groove 124.

[0137] In this embodiment, when the first housing rotates relative to the support base 20, it can drive the first fixed plate 11 to rotate relative to the support base 20, thereby driving the first synchronous swing arm 42 of the synchronization assembly 40 to rotate and slide within the first synchronization slot 113, and causing the first synchronization gear 411 to rotate. The first synchronization gear 411 drives the intermediate synchronization gear 413a meshed with it to rotate, thereby driving the intermediate synchronization gear 413b to rotate, and driving the second synchronization gear 412 meshed with it to rotate. The second synchronization gear 412 drives the second synchronization swing arm 43 to rotate and slide within the second synchronization slot 123, achieving synchronous rotation of the second fixed plate 12. The two intermediate synchronization gears 413a and 413b mesh with each other and then rotate synchronously, ensuring the synchronous rotation of the first and second fixed plates 11 and 12, thereby causing the first and second housings to rotate synchronously.

[0138] See Figure 13a , Figure 13a yes Figure 4 A schematic structural diagram of the first damping assembly 51 is shown in FIG. Figure 13b yes Figure 4 Schematic diagram of the structure of the second damping assembly 52 is shown in FIG. The first damping assembly 51 includes a first gear 510 and a first damping member 511 . The second damping assembly 52 includes a second gear 520 and a second damping member 521 .

[0139] The first gear 510 includes first gear teeth 512, a first connecting rod 513, and a first fixed shaft 514. The first connecting rod 513 is fixedly connected to one side of the first gear 510, and the first gear 510 is rotatably connected to the first fixed shaft 514, with a portion of the first fixed shaft 514 located outside the other side of the first gear 510. The first gear teeth 512 are annular external teeth. The outer peripheral surface of the first connecting rod 513 is provided with a third limiting groove 501. The third limiting groove 501 extends along the axial direction of the first connecting rod 513 and passes through the end of the first connecting rod 513 facing away from the side. There are two third limiting grooves 501, and the two third limiting grooves 501 are opposite each other along the radial direction of the first connecting rod 513.

[0140] In some other embodiments, the first gear 510 is fixedly connected to the first fixed shaft 514. That is, when the first gear 510 rotates, the first fixed shaft 514 rotates synchronously. This allows the first gear 510, the first connecting rod 513, and the first fixed shaft 514 to be integrally formed, reducing manufacturing costs. Furthermore, the first gear 510 is fixedly connected to the first fixed shaft 514, which can share the force applied to the first gear 510 during rotation, thereby reducing wear on the first gear 510.

[0141] The first damping member 511 includes a first inner ring 515, a first outer ring 516, a first fixing block 517, a second fixing block 518, and a first damping strip 519. The first inner ring 515 and the first outer ring 516 are circular ring structures and are arranged concentrically. The first inner ring 515 is located inside the first outer ring 516. In the Z-axis direction, the first inner ring 515 and the first outer ring 516 have the same width, or the width of the first inner ring 515 is smaller than the width of the first outer ring 516. The first fixing block 517 is fixedly connected to the inner circumference of the first inner ring 515. The length of the first fixing block 517 is less than or equal to the width of the first inner ring 515. There are two first fixing blocks 517, which are opposite each other along the radial direction of the first inner ring 515 and are configured to engage with the third limiting groove 501. The second fixing block 518 is fixedly connected to the outer circumference of the first outer ring 516. There are two second fixing blocks 518, which are radially opposed to each other along the first outer ring 516. The length of the second fixing block 518 is less than or equal to the width of the first outer ring 516. The first damping strip 519 is located in the gap between the first inner ring 515 and the first outer ring 516. In other embodiments, the number of the first fixing block 517 and the third fixing block 527 can be one, three, or four, etc., and those skilled in the art can adjust the number according to actual needs. This application is not limited thereto.

[0142] The first damping element 511 is made of a metal material with a yield strength greater than or equal to 1000 megapascals (MPa), such as SUS301-H stainless steel, amorphous alloy, SUS304 stainless steel, or 65 manganese (Mn) steel. As a result, the first damping element 511, and particularly the first damping strip 519, possesses sufficient elastic strength to withstand multiple transitions between a bent state and a natural state, ensuring that the first damping element 511 provides sufficient damping force and a long lifespan.

[0143] The first damping strip 519 is elongated and has a small outer diameter to ensure elastic deformation of the first damping strip 519. The thickness and width of the first inner ring 515 and the first outer ring 516 are both much larger than the outer diameter of the first damping strip 519. Therefore, while the first damping strip 519 elastically deforms, the first inner ring 515 and the first outer ring 516 do not deform, and the structure is relatively strong.

[0144] In some other embodiments, the first inner ring 515 and the first outer ring 516 may be made of a material different from that of the first damping strip 519. It is sufficient to ensure that the first inner ring 515 and the first outer ring 516 have sufficient structural strength and are not easily deformed.

[0145] There are multiple first damping strips 519, where "multiple" means two or more. The first damping strips 519 are in the shape of elongated strips, spirals, or wavy strips. The multiple first damping strips 519 are evenly arranged along the outer circumference of the first damping member 511. One end of each first damping strip 519 is fixedly connected to the outer circumference of the first inner ring 515, and the other end of the first damping strip 519 is fixedly connected to the inner circumference of the first outer ring 516. The multiple first damping strips 519 are inclined relative to the radial direction of the first damping member 511, that is, arranged in a spiral shape around the axial direction of the first damping member 511. The radial direction of the first damping member 511 refers to the direction from the center of the circle containing the first outer ring 516 to any point on the circle containing the first outer ring 516. Within the limited space between the first inner ring 515 and the first outer ring 516, the length of the first damping strips 519 is increased, thereby increasing the damping force that the first damping member 511 can provide.

[0146] The first damping strip 519 has a bent state and a natural state; when in the bent state, the first damping strip 519 bends at least once. The first inner ring 515 can rotate relative to the first outer ring 516. In other words, the first outer ring 516 remains stationary, and the first inner ring 515 rotates around the axial direction of the first damping member 511 to drive the first damping strip 519 to switch between the bent state and the natural state. In the bent state, the first damping strip 519 generates a damping force. In the natural state, the first damping strip 519 does not generate any force. In other embodiments, the first outer ring 516 can rotate relative to the first inner ring 515. In other words, the first inner ring 515 remains stationary, and the first outer ring 516 rotates around the axial direction of the first damping member 511.

[0147] Specifically, the natural state includes a first natural state and a second natural state.

[0148] See Figures 14a to 14e , Figures 14a to 14e yes Figure 13a The state change diagram of the first damping member 511 is shown in FIG.

[0149] See Figure 14a When the rotating mechanism 100 is in the unfolded state, the first damping member 511 is in the first natural state, each first damping strip 519 is in the natural length, and there is no phase change (no deformation in appearance). Figure 14b When the first inner ring 515 rotates relative to the first outer ring 516 in the clockwise direction Ω1, the end of the first damping strip 519 connected to the first inner ring 515 and the end connected to the first outer ring 516 produce relative displacement in the clockwise direction Ω1, so that the first damping strip 519 as a whole gradually bends in the counterclockwise direction and generates a damping force in the counterclockwise direction. Figure 14cWhen the first inner ring 515 rotates 180 degrees, the first damping strip 519 becomes the second natural state without phase change (no deformation in appearance). It can be understood that the first damping strip 519 in the first natural state and the first damping strip 519 in the second natural state are symmetrical structures.

[0150] After the first damping member 511 is in the second natural state. Figure 14d When the first inner ring 515 rotates relative to the first outer ring 516 in the counterclockwise direction Ω2, the end of the first damping strip 519 connected to the first inner ring 515 and the end connected to the first outer ring 516 produce relative displacement in the counterclockwise direction Ω2, so that the first damping strip 519 gradually bends in the clockwise direction and generates a damping force in the clockwise direction. Figure 14e When the first inner ring 515 rotates 180 degrees, the first damping strip 519 becomes the first natural state.

[0151] like Figure 13b The second damping assembly 52 includes a second gear 520 and a second damping member 521. The second gear 520 has the same structure as the first gear 510, and the second damping member 521 has the same and symmetrical structure as the first damping member 511. The second gear 520 includes second gear teeth 522, a second connecting rod 523, and a second fixed shaft 524. The second connecting rod 523 is fixedly connected to one side of the second gear 520, and the second gear 520 is rotatably connected to the second fixed shaft 524. A portion of the second fixed shaft 524 is located outside the other side of the second gear 520. A fourth limiting groove 502 is provided on the outer circumference of the second connecting rod 523. The fourth limiting groove 502 extends along the axial direction of the second connecting rod 523 and passes through the end of the second connecting rod 523 facing away from the side. There are two fourth limiting grooves 502, and the two fourth limiting grooves 502 are opposite each other along the radial direction of the second connecting rod 523.

[0152] In other embodiments, the second gear 520 is fixedly connected to the second fixed shaft 524. That is, when the second gear 520 rotates, the second fixed shaft 524 rotates synchronously. This allows the second gear 520, the second connecting rod 523, and the second fixed shaft 524 to be integrally formed, reducing manufacturing costs. Furthermore, the second gear 520 is fixedly connected to the second fixed shaft 524, which can share the force applied to the second gear 520 during rotation, thereby reducing wear on the second gear 520.

[0153] The second damping member 521 includes a second inner ring 525, a second outer ring 526, a third fixing block 527, a fourth fixing block 528, and a second damping strip 529. The second inner ring 525 and the second outer ring 526 are circular ring structures and are arranged concentrically, with the second inner ring 525 located inside the second outer ring 526. There are two third fixing blocks 527 fixedly connected to the inner circumference of the second inner ring 525, and the two third fixing blocks 527 are radially opposed to each other along the second inner ring 525. The third fixing blocks 527 are configured to engage with the fourth limiting groove 502. There are two fourth fixing blocks 528 fixedly connected to the outer circumference of the second outer ring 526. The second damping strip 529 is located in the gap between the second inner ring 525 and the second outer ring 526.

[0154] The basic structure of each component in the second damping assembly 52 , the connection relationship between the components, and the connection relationship between the components and components outside the assembly can all refer to the relevant description of the first damping assembly 51 .

[0155] The second damping member 521 is made of a metal material with a yield strength greater than or equal to 1000 MPa, such as SUS301-H stainless steel, amorphous alloy, SUS304 stainless steel, 65 manganese (Mn) steel, etc. The second damping strip 529 is in the shape of an elongated strip, a spiral or a wavy shape. Among them, the second damping strip 529 is in the shape of an elongated strip and has a small outer diameter to ensure that the second damping strip 529 can produce elastic deformation. The thickness and width of the second inner ring 525 and the second outer ring 526 are much larger than the outer diameter of the second damping strip 529. Therefore, when the second damping strip 529 is elastically deformed, the second inner ring 525 and the second outer ring 526 will not be deformed, and the structural strength is relatively strong.

[0156] In some other embodiments, the second inner ring 525 and the second outer ring 526 may be made of a material different from that of the second damping strip 529. It is sufficient to ensure that the second inner ring 525 and the second outer ring 526 have sufficient structural strength and are not easily deformed.

[0157] Specifically, the second damping strip 529 has a natural state and a bent state, and the natural state includes a first natural state and a second natural state. When the second damping strip 529 is in the second natural state, there is no phase change (no deformation in appearance). The second inner ring 525 rotates counterclockwise relative to the second outer ring 526, and the end of the second damping strip 529 connected to the second inner ring 525 and the end connected to the second outer ring 526 produce relative displacement in the counterclockwise direction, so that the second damping strip 529 gradually bends in the clockwise direction and generates a damping force in the clockwise direction. When the second inner ring 525 rotates 180 degrees, the second damping strip 529 becomes the first natural state. It can be understood that the first damping strip 519 in the first natural state and the second damping strip 529 in the second natural state are symmetrical structures.

[0158] In the first natural state, the second damping element 521 exhibits no phase change (no external deformation). The second inner ring 525 rotates clockwise relative to the second outer ring 526, causing the second damping strip 529, whose ends are connected to the second inner ring 525 and the second outer ring 526, to move clockwise relative to each other. This causes the second damping strip 529 to gradually bend counterclockwise and generate a counterclockwise damping force. When the second inner ring 525 rotates 180 degrees, the second damping strip 529 enters the second natural state.

[0159] See Figure 15 and Figure 16 , Figure 15 It is a structural diagram of the damping assembly 50 installed on the fixing assembly 10, wherein the rotating mechanism 100 is in a folded state. Figure 16 This is another structural diagram of the damping mechanism installed on the fixed assembly 10, wherein the rotating mechanism 100 is in the unfolded state. Figure 16 The first fixing plate 11 is not shown in the figure to facilitate observation of the matching state between the first damping assembly 51 and the first rack 422 of the first synchronous swing arm 42.

[0160] In this embodiment, the first damping assembly 51 is mounted in the first mounting groove 114 of the first fixing plate 11. The first damping member 511 is stacked on the first gear 510 and is coaxially arranged with the first gear 510. The first gear 510 is meshed with the first rack 422 of the first synchronous swing arm 42 and is rotatable within the first mounting groove 114 along the first fixed axis 514. The first outer ring 516 of the first damping member 511 is fixedly connected to the first fixing plate 11, and the first inner ring 515 of the first damping member 511 is fixedly connected to the first gear 510.

[0161] Specifically, the first gear teeth 512 of the first gear 510 are meshed with the first rack 422 of the first synchronous swing arm 42. The second fixing block 518 of the first damping member 511 is located in the first limiting groove 115 on the side surface of the first mounting groove 114 to ensure that the first outer ring 516 is fixed relative to the first fixing plate 11, that is, the first outer ring 516 is fixedly connected to the first fixing plate 11.

[0162] The first connecting rod 513 of the first gear 510 is located within the first inner ring 515 of the first damping member 511, and the first fixing block 517 is located within the third limiting groove 501 of the first connecting rod 513 to ensure that the first inner ring 515 does not rotate relative to the first gear 510. In other words, the first inner ring 515 of the first damping member 511 is fixedly connected to the first gear 510. The first fixing shaft 514 of the first gear 510 is located within the first positioning groove on the bottom surface of the first mounting groove 114 and is fixedly connected to the groove wall of the first positioning groove to increase the stability of the first gear 510 when rotating along the first fixing shaft 514. As a result, the first outer ring 516 and the first inner ring 515 can rotate relative to each other.

[0163] The second damping assembly 52 is mounted in the second mounting slot 124 of the second fixing plate 12. A second damping member 521 is stacked on and coaxially disposed with the second gear 520. The second gear 520 is meshed with the second rack 432 of the second synchronous swing arm 43 and is rotatable within the second mounting slot 124 along the second fixed axis 524. A second outer ring 526 of the second damping member 521 is fixedly connected to the second fixing plate 12, while a second inner ring 525 of the second damping member 521 is fixedly connected to the second gear 520.

[0164] Specifically, the second gear teeth 522 of the second gear 520 mesh with the second rack 432 of the second synchronous swing arm 43, allowing the second gear 520 to rotate. The fourth fixing block 528 of the second damping member 521 is located within the second limiting groove 125 on the side surface of the second mounting groove 124, thereby ensuring that the second outer ring 526 is fixed relative to the second fixing plate 12. In other words, the second outer ring 526 is fixedly connected to the second fixing plate 12.

[0165] The second connecting rod 523 of the second gear 520 is located within the second inner ring 525 of the second damping member 521, and the third fixing block 527 is located within the fourth limiting groove 502 of the second connecting rod 523, thereby ensuring that the second inner ring 525 does not rotate relative to the second gear 520. In other words, the second inner ring 525 of the second damping member 521 is fixedly connected to the second gear 520. The second fixing shaft 524 of the second gear 520 is located within the second positioning groove on the bottom surface of the second mounting groove 124 and is fixedly connected to the groove wall of the second positioning groove, thereby increasing the stability of the second gear 520 when rotating along the second fixing shaft 524. Consequently, the second outer ring 526 and the second inner ring 525 can rotate relative to each other.

[0166] In this embodiment, the first outer ring 516 of the first damping member 511 is fixedly connected to the first fixed plate 11, and the first inner ring 515 is fixedly connected to the first gear 510. Under the action of an external force, when the first housing 210 rotates relative to the support base 20, it can drive the first fixed plate 11 to rotate relative to the support base 20, thereby driving the first synchronous swing arm 42 of the synchronizer assembly 40 to rotate and slide within the first synchronous slot 113, and thus causing the first synchronous gear 411 to rotate. When the first synchronous swing arm 42 rotates and slides within the first synchronous slot 113, the first rack 422 is displaced relative to the first gear 510 along the X-axis direction, and the first rack 422 drives the first gear 510 meshing with it to rotate along the first fixed axis 514. The first connecting rod 513, fixedly connected to the first gear 510, drives the first inner ring 515 of the first damping member 511 to rotate. At this time, the first inner ring 515 rotates relative to the first fixed plate 11, while the first outer ring 516 remains stationary relative to the first fixed plate 11. This causes relative displacement between the end of the first damping strip 519 connected to the first inner ring 515 and the end connected to the first outer ring 516, causing the first damping strip 519 to gradually bend as a whole and generate a damping force. The first gear teeth 512 of the first gear 510 mesh with the first rack 422, so the damping force is also transmitted through the first gear teeth 512 to act on the first synchronous swing arm 42.

[0167] When the external force disappears, the damping force prevents the first synchronous swing arm 42 from sliding in the first synchronous slide groove 113. After the first synchronous swing arm 42 stops sliding, the first gear 510 stops rotating. After the first gear 510 stops rotating, the first fixed plate 11 stops rotating, thereby enabling the first fixed plate 11 to hover at a preset angle, thereby improving the user experience.

[0168] The first synchronous gear 411 rotates the meshed intermediate synchronous gear 413a. The intermediate synchronous gear 413a, in turn, rotates the intermediate synchronous gear 413b, with the intermediate synchronous gear 413a rotating in opposite directions to the intermediate synchronous gear 413b. The second synchronous gear 412 meshes with the intermediate synchronous gear 413b, causing the second synchronous gear 412 to rotate as well, thereby rotating the second synchronous swing arm 43 relative to the first synchronous swing arm 42.

[0169] The second synchronous swing arm 43 rotates and slides within the second synchronous slot 123, causing the second rack 432 to shift relative to the second gear teeth 522 along the X-axis. The second rack 432 drives the second gear 520 meshing with it to rotate along the second fixed axis 524. The second connecting rod 523, fixedly connected to the second gear 520, drives the second inner ring 525 of the second damping member 521 to rotate. At this time, the second inner ring 525 rotates relative to the second fixed plate 12, while the second outer ring 526 remains stationary relative to the second fixed plate 12. This causes relative displacement between the end of the second damping bar 529 connected to the second inner ring 525 and the end connected to the second outer ring 526, causing the second damping bar 529 to gradually bend and generate a damping force. The second gear teeth 522 mesh with the second rack 432, so the damping force is also transmitted through the second gear teeth 522 to act on the second synchronous swing arm 43.

[0170] When the external force disappears, the damping force prevents the second synchronous swing arm 43 from sliding in the second synchronous slot 123. After the second synchronous slot 123 stops sliding, the second gear 520 stops rotating. After the second gear 520 stops rotating, the second fixed plate 12 stops rotating, thereby enabling the second fixed plate 12 to hover at a preset angle, thereby improving the user experience.

[0171] It will be appreciated that the second outer ring 526 of the second damping member 521 is fixedly connected to the second fixed plate 12, and the second inner ring 525 is fixedly connected to the second gear 520. Under the action of an external force, the second housing 220 rotates relative to the support base 20, which can drive the second fixed plate 12 to rotate relative to the support base 20, thereby driving the second synchronization swing arm 43 of the synchronization assembly 40 to rotate and slide within the second synchronization slot 123, and thus rotating the second synchronization gear 412. As the second synchronization swing arm 43 rotates and slides within the second synchronization slot 123, the second rack 432 shifts relative to the second gear 520 along the X-axis, driving the second gear 520 meshing with it to rotate along the second fixed axis 524. The second connecting rod 523, fixedly connected to the second gear 520, drives the second inner ring 525 of the second damping member 521 to rotate. At this time, the second inner ring 525 rotates relative to the second fixed plate 12, while the second outer ring 526 remains stationary relative to the second fixed plate 12. This causes relative displacement between the end of the second damping strip 529 connected to the second inner ring 525 and the end connected to the second outer ring 526, gradually bending the second damping strip 529 and generating a damping force. The second gear teeth 522 mesh with the second rack 432, so the damping force is also transmitted through the second gear teeth 522 to act on the second synchronous swing arm 43.

[0172] When the external force disappears, the damping force prevents the second synchronous swing arm 43 from sliding in the second synchronous slot 123. After the second synchronous slot 123 stops sliding, the second gear 520 stops rotating. After the second gear 520 stops rotating, the second fixed plate 12 stops rotating, thereby enabling the second fixed plate 12 to hover at a preset angle, thereby improving the user experience.

[0173] The second synchronous gear 412 rotates the meshed intermediate synchronous gear 413b. The intermediate synchronous gear 413b in turn rotates the intermediate synchronous gear 413a, with the intermediate synchronous gear 413a rotating in opposite directions to the intermediate synchronous gear 413b. The first synchronous gear 411 meshes with the intermediate synchronous gear 413a, causing the first synchronous gear 411 to rotate, thereby rotating the first synchronous swing arm 42 relative to the second synchronous swing arm 43.

[0174] As the first synchronous swing arm 42 rotates and slides within the first synchronous slot 113, the first rack 422 shifts relative to the first gear 510 along the X-axis. This causes the first rack 422 to rotate the meshed first gear 510 along the first fixed axis 514. The first connecting rod 513, fixedly connected to the first gear 510, rotates the first inner ring 515 of the first damping member 511. At this point, the first inner ring 515 rotates relative to the first fixed plate 11, while the first outer ring 516 remains stationary. This causes relative displacement between the end of the first damping bar 519 connected to the first inner ring 515 and the end connected to the first outer ring 516, gradually bending the entire first damping bar 519 and generating a damping force. The first gear teeth 512 of the first gear 510 mesh with the first rack 422, so the damping force is also transmitted through the first gear teeth 512 to act on the first synchronous swing arm 42.

[0175] When the external force disappears, the damping force prevents the first synchronous swing arm 42 from sliding in the first synchronous slide groove 113. After the first synchronous swing arm 42 stops sliding, the first gear 510 stops rotating. After the first gear 510 stops rotating, the first fixed plate 11 stops rotating, thereby enabling the first fixed plate 11 to hover at a preset angle, thereby improving the user experience.

[0176] During the above process, the rotation direction of the first fixed plate 11 is opposite to that of the second fixed plate 12. The rotation direction of the first synchronous swing arm 42 is opposite to that of the second synchronous swing arm 43. The rotation direction of the first synchronous gear 411 is opposite to that of the second synchronous gear 412. The rotation directions of the intermediate synchronous gear 413a meshing with the first synchronous gear 411 and the intermediate synchronous gear 413b meshing with the second synchronous gear 412 are opposite to each other. The rotation direction of the first gear teeth 512 of the first gear 510 is opposite to that of the second gear teeth 522 of the second gear 520. The rotation direction of the first inner ring 515 of the first damping member 511 is opposite to that of the second inner ring 525 of the second gear 520. The first damping strip 519 and the second damping strip 529 have opposite bending directions and provide damping forces in opposite directions.

[0177] The rotation direction of the first fixing plate 11 is opposite to the direction of the damping force provided by the first damping strip 519, so that the damping force buffers the rotational force of the first fixing plate 11, preventing the first fixing plate 11 from being damaged by excessive rotational force and causing damage to the foldable electronic device 1000. The rotation direction of the second fixing plate 12 is opposite to the direction of the damping force provided by the second damping strip 529, so that the damping force buffers the rotational force of the second fixing plate 12, preventing the second fixing plate 12 from being damaged by excessive rotational force and causing damage to the foldable electronic device 1000. When the foldable electronic device 1000 switches between the folded state and the unfolded state, the user can clearly feel the damping force provided by the first damping assembly 51 and the second damping assembly 52, and the user can experience a better hand feel, thereby improving the user experience.

[0178] In other embodiments, the first outer ring 516 is fixedly connected to the first gear 510, and the first inner ring 515 is fixedly connected to the first fixed plate 11. Under the action of an external force, when the first housing rotates relative to the support base 20, it can drive the first fixed plate 11 to rotate relative to the support base 20, thereby driving the first synchronization swing arm 42 of the synchronization assembly 40 to rotate and slide within the first synchronization slot 113. The first rack 422 is displaced relative to the first gear 510 along the X-axis, driving the first gear teeth 512 of the first gear 510 meshing therewith to rotate. This, in turn, causes the first gear 510 to rotate the first outer ring 516. At this point, the first outer ring 516 rotates relative to the first fixed plate 11, while the first inner ring 515 remains stationary relative to the first fixed plate 11. This causes relative displacement between the end of the first damping strip 519 connected to the first outer ring 516 and the end connected to the first inner ring 515, causing the first damping strip 519 to gradually bend and generate a damping force. The first gear teeth 512 of the first gear teeth 512 are engaged with the first rack 422 , so the damping force is also transmitted through the first gear teeth 512 to act on the first synchronous swing arm 42 .

[0179] When the external force disappears, the damping force prevents the second synchronous swing arm 43 from sliding in the second synchronous slot 123. After the second synchronous slot 123 stops sliding, the second gear 520 stops rotating. After the second gear 520 stops rotating, the second fixed plate 12 stops rotating, thereby enabling the second fixed plate 12 to hover at a preset angle, thereby improving the user experience.

[0180] In other embodiments, the second outer ring 526 is fixedly connected to the second gear 520, and the second inner ring 525 is fixedly connected to the second fixed plate 12. Rotation of the second housing relative to the support base 20 drives the second fixed plate 12 to rotate relative to the support base 20, thereby driving the second synchronization swing arm 43 of the synchronization assembly 40 to rotate and slide within the second synchronization slot 123. The second rack 432 drives the second gear teeth 522 of the second gear 520 to rotate. At this time, the second outer ring 526 rotates relative to the second fixed plate 12, while the second inner ring 525 remains stationary relative to the second fixed plate 12. This causes relative displacement between the end of the second damping strip 529 connected to the second outer ring 526 and the end connected to the second inner ring 525, causing the second damping strip 529 to gradually bend and generate a damping force. The second gear teeth 522 mesh with the second rack 432, so the damping force is also transmitted through the second gear teeth 522 to act on the second synchronization swing arm 43. The second gear teeth 522 are engaged with the second rack 432 , so the damping force is also transmitted through the second gear teeth 522 to act on the second synchronous swing arm 43 .

[0181] When the external force disappears, the damping force prevents the second synchronous swing arm 43 from sliding in the second synchronous slot 123. After the second synchronous slot 123 stops sliding, the second gear 520 stops rotating. After the second gear 520 stops rotating, the second fixed plate 12 stops rotating, thereby enabling the second fixed plate 12 to hover at a preset angle, thereby improving the user experience.

[0182] See Figure 17 , Figure 17 yes Figure 4 , wherein the first damping strip 519 of the first damping member 511 is in the first natural state. It can be understood that in order to facilitate the visualization of the states of the first damping member 511 and the second damping member 521, the first damping strip 519 is in the first natural state. Figure 17 The first fixing plate 11 and the second fixing plate 12 are not shown.

[0183] When the rotating mechanism 100 is in the deployed state, the angle between the first fixed plate 11 and the second fixed plate 12 is 180 degrees (including the tolerance range), and the angle between the first synchronous swing arm 42 and the second synchronous swing arm 43 is 180 degrees. The angle between the first main swing arm 31 and the second main swing arm 32 is 180 degrees. The first damping bar 519 of the first damping member 511 is in the first natural state, and the second damping bar 529 of the second damping member 521 is in the second natural state. At this time, neither the first damping bar 519 nor the second damping bar 529 generates any damping force. The right side of the first rack 422 of the first synchronous swing arm 42 meshes with the first gear teeth 512 of the first gear 510. The left side of the second rack 432 of the second synchronous swing arm 43 meshes with the second gear teeth 522 of the second gear 520.

[0184] However, the first gear 510, the first damping member 511, and the first synchronous swing arm 42 generate a supporting force on the first fixing plate 11, thereby maintaining the first fixing plate 11 in a flat state, thereby maintaining the first housing 210 in a flat state. The second gear 520, the second damping member 521, and the second synchronous swing arm 43 generate a supporting force on the second fixing plate 12, thereby maintaining the second fixing plate 12 in a flat state, thereby maintaining the second housing 220 in a flat state.

[0185] In some other embodiments, the first damping strip 519 of the first damping member 511 is in the first natural state, and the second damping strip 529 of the second damping member 521 is in the second natural state. In this state, neither the first damping strip 519 nor the second damping strip 529 generates a damping force. However, the first damping strip 519 and the second damping strip 529 can be provided with a pre-force to maintain the first synchronous swing arm 42 and the second synchronous swing arm 43 in a flattened state, thereby maintaining the first fixing plate 11 and the second fixing plate 12 in a flattened state, and further maintaining the first housing 210 and the second housing 220 in a flattened state.

[0186] The prefabricated force of the first damping strip 519 can be achieved by slightly deforming the first damping strip 519, and the prefabricated force of the second damping strip 529 can be achieved by slightly deforming the second damping strip 529. In other words, the first natural state of the first damping strip 519 refers to the state in which the first damping strip 519 is slightly deformed. The second natural state of the second damping strip 529 refers to the state in which the second damping strip 529 is slightly deformed.

[0187] It can be understood that when the state of the rotating mechanism 100 needs to be changed, specifically when the rotating mechanism 100 needs to be switched gradually from the unfolded state to the folded state, an external force is applied to overcome the supporting force or the prefabricated force, so that the state of the rotating mechanism 100 can be changed, and then the state of the first shell 210 and the second shell 220 can be changed.

[0188] See Figure 18 , Figure 18 yes Figure 4 The schematic diagram of the structure of the rotating structure during the switching from the unfolded state to the folded state is shown in FIG, wherein the first damping strip 519 of the first damping member 511 is bent in the counterclockwise direction. It can be understood that in order to facilitate the visualization of the states of the first damping member 511 and the second damping member 521, Figure 18 The first fixing plate 11 and the second fixing plate 12 are not shown.

[0189] When the rotating mechanism 100 switches from the unfolded state to the folded state, the first damping strip 519 of the first damping member 511 switches from the first natural state to the second natural state, and the second damping strip 529 of the second damping member 521 switches from the second natural state to the first natural state. The first fixing plate 11 and the first synchronous swing arm 42 rotate clockwise, while the second fixing plate 12 and the second synchronous swing arm 43 rotate counterclockwise. The first fixing plate 11 and the second fixing plate 12 rotate toward each other.

[0190] Specifically, the first main swing arm 31 rotates clockwise, causing the first fixed plate 11 to drive the first synchronous swing arm 42 to rotate clockwise within the first synchronous slot 113. The first swinging member 311 of the first synchronous swing arm 42 drives the first synchronous gear 411 to rotate clockwise. The first synchronous gear 411 then drives the intermediate synchronous gear 413a to rotate counterclockwise. The first rack 422 of the first synchronous swing arm 42 drives the first gear 510 to rotate clockwise, causing the first rack 422 to gradually move leftward relative to the first gear 510. The first connecting rod 513, fixedly connected to the first gear 510, drives the first inner ring 515 of the first damping element 511 to rotate clockwise. As the first inner ring 515 rotates clockwise relative to the first outer ring 516, the end of the first damping bar 519 connected to the first inner ring 515 and the end connected to the first outer ring 516 undergo clockwise displacement, causing the entire first damping bar 519 to gradually bend counterclockwise and generate a damping force in the counterclockwise direction. The damping force in the counterclockwise direction is transmitted to the first synchronous swing arm 42 through the first gear tooth 512. When there is no external force, the damping force in the counterclockwise direction prevents the first synchronous swing arm 42 from sliding in the first synchronous slide groove 113. After the first synchronous swing arm 42 stops sliding, the first gear 510 stops rotating. After the first gear 510 stops rotating, the first fixed plate 11 stops rotating, thereby enabling the first fixed plate 11 to hover at a preset angle, thereby driving the first shell 210 to hover.

[0191] The second main swing arm 32 rotates counterclockwise, causing the second fixed plate 12 to drive the second synchronous swing arm 43 to rotate and slide counterclockwise within the second synchronous slot 123. The second synchronous swing arm 43 then drives the second synchronous gear 412 to rotate counterclockwise. The second swinging member 321 of the second synchronous gear 412 then drives the intermediate synchronous gear 413b to rotate clockwise. The second rack 432 of the second synchronous swing arm 43 drives the second gear teeth 522 of the second gear 520 to rotate counterclockwise, causing the second rack 432 to gradually move rightward relative to the second gear 520. The second connecting rod 523, fixedly connected to the second gear 520, drives the second inner ring 525 of the second damping element 521 to rotate counterclockwise. As the second inner ring 525 rotates counterclockwise relative to the second outer ring 526, the second damping strip 529, whose ends are connected to the second inner ring 525 and those connected to the second outer ring 526, undergoes counterclockwise displacement relative to one another, causing the entire second damping strip 529 to gradually bend clockwise and generate a damping force in the clockwise direction. The damping force in the clockwise direction is transmitted to the second synchronous swing arm 43 through the second gear tooth 522. When there is no external force, the damping force in the clockwise direction prevents the second synchronous swing arm 43 from sliding in the second synchronous slot 123. After the second synchronous slot 123 stops sliding, the second gear 520 stops rotating. After the second gear 520 stops rotating, the second fixed plate 12 stops rotating, thereby enabling the second fixed plate 12 to hover at a preset angle, thereby driving the second shell 220 to hover.

[0192] See Figure 19 , Figure 19 yes Figure 4 The rotating structure shown in FIG is in a folded state, wherein the first damping strip 519 of the first damping member 511 is in the second natural state. It can be understood that in order to facilitate the viewing of the states of the first damping member 511 and the second damping member 521, Figure 19 The first fixing plate 11 and the second fixing plate 12 are not shown.

[0193] When the rotating mechanism 100 is in the folded state, the first fixed plate 11 and the second fixed plate 12 are at a zero degree angle, the first synchronous swing arm 42 and the second synchronous swing arm 43 are at a zero degree angle, and the first main swing arm 31 and the second main swing arm 32 are at a zero degree angle. The first damping bar 519 of the first damping element 511 is in the second natural state, and the second damping bar 529 of the second damping element 521 is in the first natural state. The left side of the first rack 422 of the first synchronous swing arm 42 meshes with the first gear teeth 512 of the first gear 510, and the right side of the second rack 432 of the second synchronous swing arm 43 meshes with the second gear teeth 522 of the second gear 520. At this time, neither the first damping bar 519 nor the second damping bar 529 generates any damping force.

[0194] At this time, although there is no damping force, the first gear 510, the first damping member 511, and the first synchronous swing arm 42 generate a supporting force on the first fixing plate 11, thereby maintaining the first fixing plate 11 in the folded state, and further maintaining the first housing 210 in the folded state. The second gear 520, the second damping member 521, and the second synchronous swing arm 43 generate a supporting force on the second fixing plate 12, thereby maintaining the second fixing plate 12 in the folded state, and further maintaining the second housing 220 in the folded state.

[0195] In other embodiments, the first damping strip 519 of the first damping member 511 is in the first natural state, and the second damping strip 529 of the second damping member 521 is in the second natural state. In this state, neither the first damping strip 519 nor the second damping strip 529 generates a damping force. However, the first damping strip 519 and the second damping strip 529 can be provided with a pre-force to maintain the first synchronous swing arm 42 and the second synchronous swing arm 43 in the folded state, thereby maintaining the first fixing plate 11 and the second fixing plate 12 in the folded state, and further maintaining the first shell 210 and the second shell 220 in the folded state.

[0196] The prefabricated force of the first damping strip 519 can be achieved by slightly deforming the first damping strip 519, and the prefabricated force of the second damping strip 529 can be achieved by slightly deforming the second damping strip 529. In other words, the second natural state of the first damping strip 519 refers to the state in which the first damping strip 519 is slightly deformed. The first natural state of the second damping strip 529 refers to the state in which the second damping strip 529 is slightly deformed.

[0197] It can be understood that when the state of the rotating mechanism 100 needs to be changed, specifically when the rotating mechanism 100 needs to be switched gradually from a folded state to an unfolded state, applying an external force to overcome the supporting force or prefabricated force can change the state of the rotating mechanism 100, thereby changing the state of the first shell 210 and the second shell 220.

[0198] See Figure 20 , Figure 20 yes Figure 4 The schematic diagram of the structure of the rotating structure switching from the folded state to the unfolded state is shown in FIG, wherein the first damping strip 519 of the first damping member 511 is bent in the clockwise direction. It can be understood that in order to facilitate the visualization of the states of the first damping member 511 and the second damping member 521, Figure 20 The first fixing plate 11 and the second fixing plate 12 are not shown.

[0199] When the rotating mechanism 100 switches from the folded state to the unfolded state, the first damping strip 519 of the first damping member 511 switches from the second natural state to the first natural state, and the second damping strip 529 of the second damping member 521 switches from the first natural state to the second natural state. The first fixing plate 11 and the first synchronous swing arm 42 rotate counterclockwise, while the second fixing plate 12 and the second synchronous swing arm 43 rotate clockwise. The first fixing plate 11 and the second fixing plate 12 rotate away from each other.

[0200] Specifically, the first main swing arm 31 rotates counterclockwise, causing the first fixed plate 11 to drive the first synchronous swing arm 42 to rotate counterclockwise within the first synchronous slot 113. The first swinging member 311 of the first synchronous swing arm 42 drives the first synchronous gear 411 to rotate counterclockwise. The first synchronous gear 411 then drives the intermediate synchronous gear 413a to rotate clockwise. The first rack 422 of the first synchronous swing arm 42 drives the first gear 510 to rotate counterclockwise. At this time, the first rack 422 moves rightward relative to the first gear 512. The first connecting rod 513, fixedly connected to the first gear 510, drives the first inner ring 515 of the first damping element 511 to rotate counterclockwise. This causes the first damping bar 519, whose end connected to the first inner ring 515 and end connected to the first outer ring 516, to move counterclockwise relative to each other, gradually bending the first damping bar 519 clockwise and generating a clockwise damping force. The clockwise damping force is transmitted to the first synchronous swing arm 42 through the first gear 512, so that the first synchronous swing arm 42 can hover at a preset angle, thereby causing the first synchronous swing arm 42 to drive the first fixed plate 11 to hover, thereby driving the first shell 210 to hover.

[0201] The second main swing arm 32 rotates clockwise, causing the second fixed plate 12 to drive the second synchronous swing arm 43 to rotate and slide clockwise within the second synchronous slot 123. The second synchronous swing arm 43 then drives the second synchronous gear 412 to rotate clockwise. The second swinging member 321 of the second synchronous gear 412 then drives the intermediate synchronous gear 413b to rotate counterclockwise. The second rack 432 of the second synchronous swing arm 43 drives the second gear 520 to rotate clockwise, and the second connecting rod 523 of the second gear 520 drives the second inner ring 525 of the second damping element 521 to rotate clockwise. At this point, the second rack 432 moves leftward relative to the second gear teeth 522. As the second inner ring 525 rotates clockwise relative to the second outer ring 526, the second damping strip 529, whose end connected to the second inner ring 525 and end connected to the second outer ring 526, undergoes clockwise displacement, causing the entire second damping strip 529 to gradually bend counterclockwise and generate a damping force in the counterclockwise direction. The damping force in the counterclockwise direction is transmitted to the second synchronous swing arm 43 through the second gear tooth 522. When there is no external force, the damping force in the counterclockwise direction prevents the second synchronous swing arm 43 from sliding in the second synchronous slot 123. After the second synchronous slot 123 stops sliding, the second gear 520 stops rotating. After the second gear 520 stops rotating, the second fixed plate 12 stops rotating, thereby enabling the second fixed plate 12 to hover at a preset angle, thereby driving the second shell 220 to hover.

[0202] When the rotating mechanism 100 switches between the folded and unfolded states, the damping assembly 50 provides sufficient damping force, enabling the foldable electronic device 1000 to smoothly transition between the folded and unfolded states without damaging components such as the display screen. Furthermore, the damping assembly 50 of the aforementioned structure is easily manufactured with high precision, thus enabling more precise control of the damping force.

[0203] Specifically, in this embodiment, by providing a first damping assembly 51, during the rotation of the first fixed plate 11 and the first synchronous swing arm 42, the first gear teeth 512 of the first damping assembly 51 continuously engage the first rack 422 of the first synchronous swing arm 42, thereby causing the first damping bar 519 of the first damping member 511 to bend, thereby generating a force that prevents the rotation of the first synchronous swing arm 42, thereby providing a damping force for the rotation of the first synchronous swing arm 42, the first fixed plate 11, and the first housing 210. The damping force provided by the first damping assembly 51 to the rotation of the first synchronous swing arm 42 can cause the first synchronous swing arm 42 to hover at a preset angle, thereby causing the first synchronous swing arm 42 to cause the first fixed plate 11 to hover, and thus the first housing 210 to hover, thereby achieving precise damping force control.

[0204] This embodiment also includes a second damping assembly 52. ​​During the rotation of the second fixed plate 12 and the second synchronous swing arm 43, the second gear teeth 522 of the second damping assembly 52 continuously engage the second rack 432 of the second synchronous swing arm 43, thereby causing the second damping bar 529 of the second damping member 521 to bend, generating a force that prevents the rotation of the second synchronous swing arm 43, thereby providing a damping force for the rotation of the second synchronous swing arm 43, the second fixed plate 12, and the second housing 220. The damping force provided by the second damping assembly 52 for the rotation of the second synchronous swing arm 43 can cause the second synchronous swing arm 43 to hover at a preset angle, thereby causing the second synchronous swing arm 43 to cause the second fixed plate 12 to hover, and thus the second housing 220 to hover, achieving precise damping force control.

[0205] In this embodiment, the damping assembly 50 is mounted on the fixed assembly 10. Compared to mounting the damping assembly 50 on the bearing base 20, the thickness dimension of the bearing base 20 is reduced, thereby reducing the thickness dimension of the entire rotating mechanism 100. The damping assembly 50 is mounted on the fixed assembly 10, which makes more space for the components mounted on the bearing base 20, making it easier to mount the remaining components on the bearing base 20, and the precision requirements are relatively lower, thereby helping to reduce costs. In addition, compared to the damping assembly 50 mounted on the bearing base 20, the damping assembly 50 provided in this embodiment has a simpler structure and does not require the use of multiple springs and other components. Only the first damping member and the second damping member with relatively simple structures can provide sufficient damping force, thereby reducing the number of components of the rotating mechanism 100, thereby reducing the difficulty of assembly, reducing the overall weight of the rotating mechanism 100, and thus reducing costs.

[0206] The above are only some of the embodiments and implementations of this application. The scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A rotating mechanism, characterized in that: include: A bearing base, a first synchronous swing arm, a second synchronous swing arm, a first fixing plate, a second fixing plate and a first damping assembly; The first synchronous swing arm and the second synchronous swing arm are respectively installed on opposite sides of the bearing base in the width direction and are rotatably connected to the bearing base; the first synchronous swing arm is slidably and rotatably connected to the first fixed plate, and the second synchronous swing arm is slidably and rotatably connected to the second fixed plate; The first synchronous swing arm includes a first swing arm body and a first rack located on the first swing arm body, the first swing arm body is rotatably connected to the bearing base, and is slidably and rotatably connected to the first fixing plate; The first damping assembly is mounted on the first fixing plate, and includes a first gear and a first damping member. The first damping member is located on the first fixing plate and fixedly connects the first fixing plate and the first gear, and the first gear is meshed with the first rack. The first synchronous swing arm can drive the first rack to push the first gear to rotate, and the first gear drives the first damping member to elastically deform, and the elastically deformed first damping member generates a damping force; The first damping member includes a first inner ring, a first outer ring, and a first damping strip; the first outer ring is sleeved on the outer circumference of the first inner ring and is arranged concentrically with the first inner ring; the first damping strip is located between the first inner ring and the first outer ring, and opposite ends of the first damping strip are respectively fixedly connected to the outer circumference of the first inner ring and the inner circumference of the first outer ring; One of the first inner ring and the first outer ring is fixedly connected to the first gear, and the other one is fixedly connected to the first fixed plate; the first inner ring and the first outer ring can rotate relative to each other and in opposite directions, so that the first damping strip can switch between a natural state and a bent state.

2. The rotation mechanism according to claim 1, characterized in that: The first synchronous swing arm and the second synchronous swing arm rotate relative to each other, and the first rack pushes the first gear to rotate, so that the first damping member is elastically deformed, so that the first fixing plate is suspended at a preset angle.

3. The rotation mechanism according to claim 1, characterized in that: The first inner ring is fixedly connected to the first gear, and the first outer ring is fixedly connected to the first fixing plate; the first gear drives the first inner ring to rotate relative to the first outer ring.

4. The rotation mechanism according to claim 1, wherein: The first inner ring is fixedly connected to the first fixing plate, and the first outer ring is fixedly connected to the first gear; the first gear drives the first outer ring to rotate relative to the first inner ring.

5. The rotating mechanism according to claim 1, wherein: The first damping strip is inclined relative to a radial direction of the first damping element.

6. The rotating mechanism according to claim 1, characterized in that: The first damping strip is made of a metal material with a yield strength greater than 1000 MPa.

7. The rotating mechanism according to claim 1, wherein: There are a plurality of first damping strips, and the plurality of first damping strips are evenly distributed between the first inner ring and the first outer ring, and are arranged around the axial direction of the first damping member.

8. The rotating mechanism according to any one of claims 1 to 7, characterized in that: The first fixed plate is provided with a first synchronous slide groove and a first mounting groove, the first synchronous slide groove is connected to the first mounting groove, one end of the first synchronous swing arm is located in the first synchronous slide groove, and the first damping assembly is installed in the first mounting groove; the first rack is located on the side of the first synchronous slide groove facing the first mounting groove; the first gear includes a first gear tooth, and the first gear tooth is exposed relative to the first synchronous slide groove.

9. The rotating mechanism according to any one of claims 1 to 7, characterized in that: The second synchronous swing arm includes a second swing arm body and a second rack located on the second swing arm body, the second swing arm body is rotatably connected to the bearing base, and is slidably and rotatably connected to the second fixing plate; The rotating mechanism also includes a second damping assembly, which is mounted on the second fixed plate. The second damping assembly includes a second gear and a second damping member. The second damping member is located on the second fixed plate, and the second damping member is fixedly connected to the second fixed plate and the second gear, and the second gear is engaged with the second rack.

10. The rotating mechanism according to claim 9, characterized in that: The first synchronous swing arm and the second synchronous swing arm rotate relative to each other, and the second rack pushes the second gear to rotate, so that the second damping member is elastically deformed, so that the second fixed plate is suspended at a preset angle.

11. The rotating mechanism according to claim 9, characterized in that: The second damping member includes a second inner ring, a second outer ring, and a second damping strip; the second outer ring is sleeved on the outer circumference of the second inner ring and is arranged concentrically with the second inner ring; the second damping strip is located between the second inner ring and the second outer ring, and opposite ends of the second damping strip are respectively fixedly connected to the outer circumference of the second inner ring and the inner circumference of the second outer ring; One of the second inner ring and the second outer ring is fixedly connected to the second gear, and the other one is fixedly connected to the second fixed plate; the second inner ring and the second outer ring can rotate relative to each other and in opposite directions, so that the second damping strip can switch between a natural state and a bent state.

12. The rotating mechanism according to claim 11, characterized in that: The second inner ring is fixedly connected to the second gear, and the second outer ring is fixedly connected to the second fixed plate; the second gear drives the second inner ring to rotate relative to the second outer ring.

13. The rotation mechanism according to claim 11, characterized in that: The second inner ring is fixedly connected to the second fixing plate, and the second outer ring is fixedly connected to the second gear; the second gear drives the second outer ring to rotate relative to the second inner ring.

14. The rotating mechanism according to claim 11, characterized in that: The second damping strip is inclined relative to a radial direction of the second damping element.

15. The rotating mechanism according to claim 11, wherein: The second damping strip is made of a metal material with a yield strength greater than 1000 MPa.

16. The rotating mechanism according to claim 11, characterized in that: There are a plurality of second damping strips, and the plurality of second damping strips are evenly distributed between the second inner ring and the second outer ring, and are arranged around the axial direction of the second damping member.

17. The rotating mechanism according to claim 9, characterized in that: The second fixed plate is provided with a second synchronous slide groove and a second mounting groove, the second synchronous slide groove is connected to the second mounting groove, one end of the second synchronous swing arm is located in the second synchronous slide groove, and the second damping assembly is installed in the second mounting groove; the second rack is located on the side of the second synchronous slide groove facing the second mounting groove; the second gear includes second gear teeth, and the second gear teeth are exposed relative to the second synchronous slide groove.

18. The rotating mechanism according to any one of claims 1 to 7, characterized in that: The rotating mechanism further includes a first main swing arm and a second main swing arm, the first main swing arm including a first swinging body and a first rotating body fixedly connected; the first swinging body is fixedly connected to the first fixed plate, and the first rotating body is slidably and rotationally connected to the bearing base; The second main swing arm includes a second swinging body and a second rotating body that are fixedly connected; the second swinging body is fixedly connected to the second fixed plate, and the second rotating body is slidably and rotationally connected to the bearing base.

19. The rotating mechanism according to any one of claims 1 to 7, characterized in that: The rotating mechanism also includes a synchronous gear installed on the supporting base, and the synchronous gear includes a first synchronous gear, an intermediate synchronous gear and a second synchronous gear which are arranged in sequence along the width direction of the supporting base and mesh with each other; the first synchronous swing arm is fixedly connected to the first synchronous gear, and the second synchronous swing arm is fixedly connected to the second synchronous gear.

20. A foldable electronic device, characterized in that: It includes a first shell, a second shell, a display screen and a rotating mechanism as described in any one of claims 1 to 19, the rotating mechanism is connected between the first shell and the second shell, the display screen is installed on the first shell, the second shell and the rotating mechanism, and when the rotating mechanism rotates, the first shell and the second shell rotate relative to each other, thereby driving the display screen to fold or unfold.

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