Folding device and electronic device

Abstract

The present application provides a folding device and an electronic device. It includes a first bracket, a second bracket and a rotating mechanism; the rotating mechanism includes a fixed structure, a first and a second synchronous swing arm, and a connecting structure; the first synchronous swing arm is connected to the first bracket, and is rotatably connected to the fixed structure through a first shaft; the second synchronous swing arm is connected to the second bracket, and is rotatably connected to the fixed structure through a second shaft; the connecting structure is rotatably connected to the first synchronous swing arm through a third shaft, and is rotatably connected to the second synchronous swing arm through a fourth shaft, and the third shaft and the first shaft and the fourth shaft and the second shaft are spaced apart; the first synchronous swing arm can rotate relative to the fixed structure, and drive the second synchronous swing arm to rotate relative to the fixed structure through the connecting structure, so that the first bracket and the second bracket can be relatively folded or unfolded. The technical solution of the present application has a small number of parts, and can ensure the synchronous movement effect of the two shells during the deformation process, thereby improving the user experience.

Description

Technical Field

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

[0002] As flexible folding screen technology matures, flexible folding terminal products have become a major trend. Folding terminal products (such as folding mobile phones, folding tablets, folding computers and other electronic devices) need to meet higher reliability and better operating experience. Folding terminal products generally include two shells and a rotating mechanism connected between the two shells. The rotating mechanism can control the relative folding or unfolding of the two shells through deformation. However, the rotating mechanism of traditional folding terminal products usually uses complex mechanisms such as multi-stage gear structures to transmit motion. There are many parts and complex matching relationships, which makes it easy to make the synchronous movement of the two shells worse during deformation, affecting the user experience. Summary of the invention

[0003] The embodiment of the present application provides a folding device and an electronic device. The rotating mechanism of the folding device has a small number of parts, a simple matching relationship, and can ensure the synchronous movement effect of the two shells during the deformation process, thereby improving the user experience.

[0004] In a first aspect, the present application provides a folding device, the folding device comprising a first bracket, a second bracket and a rotating mechanism;

[0005] The rotating mechanism comprises a fixed structure, a first synchronous swing arm, a second synchronous swing arm, a connecting structure, a first shaft body, a second shaft body, a third shaft body and a fourth shaft body;

[0006] The first synchronous swing arm is connected to the first bracket, and the first synchronous swing arm is rotatably connected to the fixed structure through the first shaft;

[0007] The second synchronous swing arm is connected to the second bracket, and the second synchronous swing arm is rotatably connected to the fixed structure through the second shaft;

[0008] The connecting structure is rotatably connected to the first synchronous swing arm through the third shaft, and the connecting structure is rotatably connected to the second synchronous swing arm through the fourth shaft, the third shaft and the first shaft are spaced apart, and the fourth shaft and the second shaft are spaced apart;

[0009] The first synchronous swing arm can rotate relative to the fixed structure, and drives the second synchronous swing arm to rotate relative to the fixed structure through the connecting structure, so that the first bracket and the second bracket are relatively folded or relatively unfolded.

[0010] The technical solution of the present application is to connect the connecting structure to the first synchronous swing arm and the second synchronous swing arm respectively, so that when the first synchronous swing arm is used as an active part to perform rotational motion, the connection structure can be driven to move by the change of the coordinates of the connection between the first synchronous swing arm and the connecting structure, and then the second synchronous swing arm is passively rotated by the power transmission effect of the connecting structure, even if the second synchronous swing arm is synchronously rotated as a passive part. When the second synchronous swing arm is used as an active part to perform rotational motion, the connection structure can be driven to move by the change of the coordinates of the connection between the second synchronous swing arm and the connecting structure, and then the first synchronous swing arm is passively rotated by the power transmission effect of the connecting structure, even if the first synchronous swing arm is synchronously rotated as a passive part.

[0011] Therefore, no matter which one of the first synchronous swing arm and the second synchronous swing arm is used as the active part to perform rotational motion, the other one can be used as the passive part to rotate synchronously under the action of the connection structure, so that the rotational motion of the first synchronous swing arm and the second synchronous swing arm has good synchronization and consistency, and can rotate synchronously towards each other to approach each other or rotate synchronously away from each other. In addition, because the first synchronous swing arm is connected to the first bracket, and the second synchronous swing arm is connected to the second bracket, the first bracket and the second bracket can be relatively folded in the process of the first synchronous swing arm and the second synchronous swing arm approaching each other, and the first bracket and the second bracket can be relatively unfolded in the process of the first synchronous swing arm and the second synchronous swing arm moving away from each other.

[0012] The synchronization and consistency between the first bracket and the second bracket are also good.

[0013] In addition, since the rotating mechanism has a small number of parts, the matching relationship of the parts is simple, the transmission chain is short, the number of motion transmission times is small, and the cumulative error is small, the control accuracy of the rotating mechanism is high, and the synchronous movement effect of the two shells can be ensured during the deformation process, thereby improving the rotation accuracy of the folding device, which is beneficial to improving the user experience of electronic devices using the folding device.

[0014] In a possible implementation manner, the center line of the first shaft body is a first axis, and the first synchronous swing arm can rotate relative to the fixing frame around the first axis;

[0015] The center line of the second shaft body is a second axis, and the second synchronous swing arm can rotate relative to the fixing frame around the second axis;

[0016] The first axis and the second axis are arranged asymmetrically.

[0017] It can be understood that the positions of the first shaft and the second shaft relative to the whole machine are fixed, and because the first shaft and the second shaft are respectively collinear with the rotation centers of the first synchronous swing arm and the second synchronous swing arm, that is, the positions of the rotation centers of the first synchronous swing arm and the second synchronous swing arm are fixed and will not change. Therefore, when the first synchronous swing arm and the second synchronous swing arm are both connected to the fixed frame, the first synchronous swing arm and the second synchronous swing arm can rotate smoothly and reliably because they have a fixed rotation center, and when the first synchronous swing arm and the second synchronous swing arm rotate, they can control the rotation angles of the first bracket and the second bracket relative to the fixed frame to be consistent, so that the rotation movements of the first bracket and the second bracket are synchronized and consistent, and the folding and unfolding movements of the folding device are more symmetrical, which is conducive to improving the user experience.

[0018] In addition, the first shaft body and the second shaft body are connected to the fixed structure, so the first shaft body and the second shaft body are fixed shaft bodies. The third shaft body and the fourth shaft body are connected to the connection structure, so the third shaft body and the fourth shaft body are non-fixed shaft bodies. Therefore, the axis center of the first shaft body and the axis center of the second shaft body are fixed axis centers, and the axis center of the third shaft body and the axis center of the fourth shaft body are non-fixed axis centers, wherein the axis center is the center line of the shaft body.

[0019] In the technical solution of the present application, the first axis (i.e., the axis center of the first axis) and the second axis (i.e., the axis center of the second axis) can be set asymmetrically, so that the various axis bodies in the rotating mechanism that are connected to the connecting structure and the fixed structure can form an asymmetrical staggered layout of "fixed axis center-non-fixed axis center-fixed axis center-non-fixed axis center".

[0020] Therefore, the rotational movements of the first synchronous swing arm and the second synchronous swing arm can have good consistency and synchronization, and the relative positional relationship of multiple shafts has diversified possibilities, strong practicality and a wide range of applications.

[0021] In a possible implementation manner, the rotating mechanism further includes a first connecting shaft and a second connecting shaft;

[0022] The first synchronous swing arm comprises a sliding end and a rotating end, the sliding end of the first synchronous swing arm is slidably connected to the first bracket through the first connecting shaft, the first shaft body and the third shaft body are both connected to the rotating end of the first synchronous swing arm, and the first shaft body is closer to the sliding end of the first synchronous swing arm relative to the second shaft body;

[0023] The second synchronous swing arm includes a sliding end and a rotating end. The sliding end of the second synchronous swing arm is slidably connected to the second bracket via the second connecting shaft. The second shaft body and the fourth shaft body are both connected to the rotating end of the second synchronous swing arm, and the fourth shaft body is closer to the sliding end of the second synchronous swing arm relative to the second shaft body.

[0024] In a possible implementation manner, the sliding end of the first synchronous swing arm is rotatably connected to the first bracket via the first connecting shaft, and the sliding end of the second synchronous swing arm is rotatably connected to the second bracket via the second connecting shaft.

[0025] It can be understood that the sliding end of the first synchronous swing arm is movably connected (sliding and rotatingly connected) to the first bracket, and the sliding end of the first synchronous swing arm is movably connected (sliding and rotatingly connected) to the second bracket. During the process of relative folding or relative unfolding of the first bracket and the second bracket, the sliding end of the first synchronous swing arm slides and rotates relative to the first bracket, thereby driving the first bracket to perform synchronous rotational movement. The sliding end of the second synchronous swing arm is movably connected (sliding and rotatingly connected) to the second bracket, and the sliding end of the second synchronous swing arm is movably connected (sliding and rotatingly connected) to the second bracket. During the process of relative folding or relative unfolding of the second bracket and the second bracket, the sliding end of the second synchronous swing arm slides and rotates relative to the first bracket, thereby driving the second bracket to perform synchronous rotational movement.

[0026] By providing a plurality of shafts, the connection between the parts in the rotating mechanism and the rotating mechanism and the first bracket and the second bracket can be realized. Compared with the traditional rotating structure in which the parts need to be connected through complex components such as gear meshing, this embodiment can achieve reliable connection only by the cooperation between the shafts and the parts, has a simple structure, low processing difficulty, and is easy to achieve high processing accuracy.

[0027] As a result, the number of components of the rotating mechanism is small, the matching relationship and matching position are simple, and the components are easy to manufacture and assemble, which is conducive to mass production. In addition, the various parts of the rotating mechanism are connected by hole-shaft matching. On the one hand, the structure is simple and occupies little space, making it easier for folding devices and electronic devices to be thinner and lighter. On the other hand, the processing tolerance of the parts can be small, the hole-shaft gap can be easily controlled, and the synchronous angle virtual position of the rotating mechanism can be reduced to a minimum, so that when the rotating mechanism acts on the first bracket and the second bracket, the synchronization effect of the first bracket and the second bracket is excellent.

[0028] It is understandable that the connection of each part in the rotating mechanism will produce gap virtual position due to processing tolerance, and the synchronous angle virtual position is the rotation angle difference between the first synchronous swing arm and the second synchronous swing arm during the synchronous rotation process due to the gap virtual position. Specifically, under an ideal state, when the first synchronous swing arm rotates any degree within the angle range of 0°-90° relative to the fixed frame, the second synchronous swing arm can also rotate the corresponding degree relative to the fixed frame synchronously. However, due to the existence of part processing tolerance, the degree of rotation of the first synchronous swing arm and the second synchronous swing arm relative to the fixed frame will have a certain difference. For example, the first synchronous swing arm rotates 10° relative to the fixed frame, and the second synchronous swing arm rotates 9° relative to the fixed frame, and there is a 1° rotation angle difference between the two. The parts in the rotating mechanism are set to be hole-shaft matching. Due to the high processing accuracy of the hole-shaft matching and the easy control of the gap, the rotation angle difference between the first synchronous swing arm and the second synchronous swing arm can be reduced to a minimum, so that the synchronization effect of the first synchronous swing arm and the second synchronous swing arm is excellent.

[0029] In a possible implementation manner, one of the first bracket and the sliding end of the first synchronous swing arm is provided with a first sliding groove, and the other is provided with the first connecting shaft, and the first sliding groove and the first connecting shaft are cooperatively connected to enable the first bracket and the sliding end of the first synchronous swing arm to slide relative to each other;

[0030] One of the sliding ends of the second bracket and the second synchronous swing arm is provided with a second sliding groove, and the other is provided with the second connecting shaft. The second sliding groove and the second connecting shaft are cooperatively connected to enable the sliding ends of the second bracket and the second synchronous swing arm to slide relative to each other.

[0031] Therefore, no matter the first sliding groove is arranged on the first bracket and the first connecting shaft is arranged on the sliding end of the first synchronous swing arm, or the first sliding groove is arranged on the sliding end of the first synchronous swing arm and the first connecting shaft is arranged on the first bracket, relative sliding can be achieved between the sliding end of the first synchronous swing arm and the first bracket, the connection relationship has diversified possibilities, strong practicality and wide application range.

[0032] Furthermore, no matter the second sliding groove is arranged on the second bracket and the second connecting shaft is arranged on the sliding end of the second synchronous swing arm, or the second sliding groove is arranged on the sliding end of the second synchronous swing arm and the second connecting shaft is arranged on the second bracket, relative sliding can be achieved between the sliding end of the second synchronous swing arm and the second bracket, the connection relationship has diversified possibilities, strong practicality and a wide range of applications.

[0033] Exemplarily, the first sliding groove is located in the first bracket, the first connecting shaft is passed through the sliding end of the first synchronous swing arm, the first connecting shaft extends out of both ends of the first synchronous swing arm and is connected to the first sliding groove, and the first connecting shaft can slide relative to the first sliding groove;

[0034] The second sliding groove is located in the second bracket, the second connecting shaft is passed through the sliding end of the second synchronous swing arm, the second connecting shaft extends out of both ends of the second synchronous swing arm and is connected to the second sliding groove, and the second connecting shaft can slide relative to the second sliding groove.

[0035] In a possible implementation manner, the connecting structure is a connecting rod, the first synchronous swing arm can rotate clockwise around the first shaft and drive the connecting rod to move toward the first synchronous swing arm, and the second synchronous swing arm is driven by the connecting rod to rotate counterclockwise around the second shaft, so that the first bracket and the second bracket are relatively folded; or,

[0036] The first synchronous swing arm can rotate counterclockwise around the first shaft and drive the connecting rod to move toward the second synchronous swing arm. The second synchronous swing arm is driven by the connecting rod to rotate clockwise around the second shaft to enable the first bracket and the second bracket to unfold relatively.

[0037] Therefore, during the unfolding and folding process of the folding device, the rotation movement of the first synchronous swing arm relative to the fixed frame is symmetrical with the rotation movement of the second synchronous swing arm relative to the fixed frame, so that the rotation movement of the first bracket and the second bracket relative to the support frame remains synchronized, that is, they approach or move away from each other synchronously. Therefore, the rotation movement of the first bracket and the second bracket relative to the support frame has good synchronization, which improves the mechanical operation experience of the folding device and the electronic device.

[0038] In a possible implementation manner, the fixing structure includes a first fixing frame and a second fixing frame;

[0039] The first fixing frame and the second fixing frame are spaced apart in the axial direction, and the rotating end of the first synchronous swing arm and the rotating end of the second synchronous swing arm are sandwiched between the first fixing frame and the second fixing frame;

[0040] One end of the first shaft is connected to the first fixing frame, the first shaft passes through the rotating end of the first synchronous swing arm, and the other end of the first shaft is connected to the second fixing frame;

[0041] There are two second shafts, the center lines of the two second shafts are collinear, one second shaft connects the first fixed frame and the rotating end of the second synchronous swing arm, and the other second shaft connects the second fixed frame and the rotating end of the second synchronous swing arm.

[0042] It can be understood that the axial direction is the extension direction of the first shaft body, and the first fixing frame and the second fixing frame arranged at intervals form an installation space for the rotating mechanism, which can provide a guide for the installation of the rotating mechanism. And by providing the first fixing frame and the second fixing frame, and connecting the first fixing frame and the second fixing frame with the first synchronous swing arm and the second synchronous swing arm, the possibility of the first synchronous swing arm and the second synchronous swing arm being loosened can be reduced to a minimum, ensuring the connection strength of the first synchronous swing arm and the second synchronous swing arm and the reliability and stability when performing a rotating motion.

[0043] In a possible implementation, the connecting structure is a connecting rod, the rotating end of the first synchronous swing arm is provided with a first receiving groove, the rotating end of the second synchronous swing arm is provided with a second receiving groove, and the two ends of the connecting rod are respectively installed in the first receiving groove and the second receiving groove.

[0044] In addition, the two ends of the connecting rod are respectively installed in the first receiving groove and the second receiving groove, so that the first receiving groove and the second receiving groove can accommodate at least part of the connecting rod, which can save the space occupied by the rotating mechanism and is conducive to realizing the lightweight folding device and the electronic equipment using the folding device.

[0045] In a possible implementation manner, one end of the third shaft body is connected to one side wall of the first receiving groove, the third shaft body passes through the connecting rod, and the other end of the third shaft body is connected to the other side wall of the first receiving groove;

[0046] One end of the fourth shaft body is connected to one side wall of the second receiving groove, the fourth shaft body passes through the connecting rod, and the other end of the fourth shaft body is connected to the other side wall of the second receiving groove.

[0047] In a possible implementation manner, a center line of the first shaft body is a first axis, a center line of the second shaft body is a second axis, and the first axis and the second axis are symmetrically arranged.

[0048] It can be understood that the positions of the first shaft and the second shaft relative to the whole machine are fixed, and because the first shaft and the second shaft are respectively collinear with the rotation centers of the first synchronous swing arm and the second synchronous swing arm, that is, the positions of the rotation centers of the first synchronous swing arm and the second synchronous swing arm are fixed and will not change. Therefore, when the first synchronous swing arm and the second synchronous swing arm are both connected to the fixed frame, the first synchronous swing arm and the second synchronous swing arm can rotate smoothly and reliably because they have a fixed rotation center, and when the first synchronous swing arm and the second synchronous swing arm rotate, they can control the rotation angles of the first bracket and the second bracket relative to the fixed frame to be consistent, so that the rotation movements of the first bracket and the second bracket are synchronized and consistent, and the folding and unfolding movements of the folding device are more symmetrical, which is conducive to improving the user experience.

[0049] In addition, the first shaft body and the second shaft body are connected to the fixed structure, so the first shaft body and the second shaft body are fixed shaft bodies. The third shaft body and the fourth shaft body are connected to the connection structure, so the third shaft body and the fourth shaft body are non-fixed shaft bodies. Therefore, the axis center of the first shaft body and the axis center of the second shaft body are fixed axis centers, and the axis center of the third shaft body and the axis center of the fourth shaft body are non-fixed axis centers, wherein the axis center is the center line of the shaft body.

[0050] In the technical solution of the present application, the first axis (i.e., the axis center of the first axis) and the second axis (i.e., the axis center of the second axis) can be symmetrically arranged so that the various axis bodies in the rotating mechanism that are connected to the connecting structure and the fixed structure can form a symmetrical layout of "fixed axis center-non-fixed axis center-non-fixed axis center-fixed axis center".

[0051] Therefore, the rotational movements of the first synchronous swing arm and the second synchronous swing arm can have good consistency and synchronization, strong practicality and a wide range of applications.

[0052] In a possible implementation manner, the rotating mechanism further includes a fifth shaft, the connecting structure includes a first connecting rod and a second connecting rod, the first connecting rod includes a transmission end and a sliding end, and the second connecting rod includes a transmission end and a sliding end;

[0053] The transmission end of the first connecting rod is rotatably connected to the first synchronous swing arm through the third shaft, the transmission end of the second connecting rod is rotatably connected to the second synchronous swing arm through the fourth shaft, and the sliding end of the first connecting rod is rotatably connected to the sliding end of the second connecting rod through the fifth shaft;

[0054] The fixed structure is provided with a slide groove, the extension direction of the slide groove is perpendicular to the extension direction of the fixed structure, and the fifth shaft is slidably connected to the slide groove;

[0055] The movement of the fifth shaft in the slide slot drives the sliding end of the first connecting rod and the sliding end of the second connecting rod to move relative to the slide slot, so that the first connecting rod and the second connecting rod are relatively folded or relatively unfolded.

[0056] It is understandable that by setting the slide groove, the synchronous movement of the first connecting rod and the second connecting rod relative to the slide groove can be converted into the relative rotation between the first connecting rod and the second connecting rod, thereby realizing the synchronous rotation of the first synchronous swing arm and the second synchronous swing arm (approaching each other or moving away from each other). In addition, because the first connecting rod can be linked to the first bracket through the first synchronous swing arm, and the second connecting rod can be linked to the second bracket through the second synchronous swing arm, the rotating mechanism as a whole has better mechanism tensile resistance and mechanism anti-extrusion ability.

[0057] In a possible implementation manner, when the fifth shaft is located at the top of the slide slot, the first connecting rod and the second connecting rod are relatively spread out, and the first synchronous swing arm and the second synchronous swing arm are close to each other;

[0058] When the fifth shaft is located at the bottom of the slide groove, the first connecting rod and the second connecting rod are relatively folded, and the first synchronous swing arm and the second synchronous swing arm are away from each other.

[0059] In a possible implementation manner, the first synchronous swing arm can rotate counterclockwise around the first shaft and drive the first connecting rod and the second connecting rod to move upward relative to the bottom of the slide slot, and the second synchronous swing arm is driven by the second connecting rod to rotate clockwise around the second shaft, so that the first bracket and the second bracket are folded relative to each other; or,

[0060] The first synchronous swing arm can rotate clockwise around the first axis and drive the first connecting rod and the second connecting rod to move downward relative to the top of the slide slot. The second synchronous swing arm is driven by the second connecting rod to rotate counterclockwise around the second axis to make the first bracket and the second bracket unfold relatively.

[0061] Therefore, during the unfolding and folding process of the folding device, the rotation movement of the first synchronous swing arm relative to the slide slot is symmetrical with the rotation movement of the second synchronous swing arm relative to the slide slot, and the rotation movement of the first connecting rod relative to the slide slot is symmetrical with the rotation movement of the second connecting rod relative to the slide slot, so that the rotation movement of the first bracket and the second bracket relative to the support frame remains synchronized, that is, they approach or move away from each other synchronously. Therefore, the rotation movement of the first bracket and the second bracket relative to the support frame has good synchronization, which improves the mechanical operation experience of the folding device and the electronic device.

[0062] In a possible implementation manner, the rotating mechanism further includes a fifth shaft, a sixth shaft and a seventh shaft, and the connecting structure includes a first connecting rod, a second connecting rod and a third connecting rod connected in sequence;

[0063] One end of the first connecting rod is rotatably connected to the first synchronous swing arm through the third shaft, the other end of the first connecting rod is rotatably connected to one end of the second connecting rod through the fifth shaft, the second connecting rod is rotatably connected to the fixed structure through the sixth shaft, the other end of the second connecting rod is rotatably connected to one end of the third connecting rod through the seventh shaft, and the other end of the third connecting rod is rotatably connected to the second synchronous swing arm through the fourth shaft;

[0064] The second connecting rod can rotate around the sixth axis relative to the fixed structure.

[0065] It is understandable that the rotating mechanism adopts a multi-stage connecting rod transmission method to achieve the synchronous rotation effect of the two shells of the folding device. Compared with the traditional gear synchronization and other small single-body parts, the multi-stage connecting rod transmission method provided in this embodiment has relatively large parts, relatively high overall structural strength and strong reliability. The number of components of the rotating structure is small, the matching relationship and matching position are simple, and the components are easy to make and assemble, which is conducive to mass production. In addition, the various parts of the rotating mechanism are generally connected by hole-shaft matching. On the one hand, the structure is simple and occupies little space, making it easier for the folding device and electronic equipment to be thin and light. On the other hand, the processing tolerance of the parts can be small, the hole-shaft gap is easy to control, and the virtual position of the synchronization angle of the rotating mechanism can be reduced to a minimum, so that when the rotating mechanism acts on the first bracket and the second bracket, the synchronization effect of the first bracket and the second bracket is excellent.

[0066] In a possible implementation manner, the first synchronous swing arm can rotate clockwise around the first axis and drive the first connecting rod to move toward the first synchronous swing arm, the second connecting rod is driven by the first connecting rod to rotate counterclockwise around the sixth axis and drive the third connecting rod to move toward the second synchronous swing arm, and the second synchronous swing arm is driven by the third connecting rod to rotate counterclockwise around the second axis, so that the first bracket and the second bracket are folded relative to each other; or,

[0067] The first synchronous swing arm can rotate counterclockwise around the first axis and drive the first connecting rod to move toward the second synchronous swing arm. The second connecting rod is driven by the first connecting rod to rotate clockwise around the sixth axis and drive the third connecting rod to move toward the first synchronous swing arm. The second synchronous swing arm is driven by the third connecting rod to rotate clockwise around the second axis, so that the first bracket and the second bracket can be relatively unfolded.

[0068] Therefore, during the unfolding and folding process of the folding device, the rotation movement of the first synchronous swing arm relative to the fixed structure is symmetrical with the rotation movement of the second synchronous swing arm relative to the fixed structure, so that the rotation movement of the first bracket and the second bracket relative to the support frame remains synchronized, that is, they approach or move away from each other synchronously. Therefore, the rotation movement of the first bracket and the second bracket relative to the support frame has good synchronization, which improves the mechanical operation experience of the folding device and the electronic device.

[0069] In a possible implementation manner, when the first bracket and the second bracket are relatively folded to a closed state, the first link, the second link and the third link are relatively unfolded; when the first bracket and the second bracket are relatively unfolded to a flattened state, the first link, the second link and the third link are relatively folded.

[0070] In a second aspect, the present application provides an electronic device, comprising a flexible display and a folding device as described above, or comprising a first shell, a second shell and a folding device as described above, wherein the first bracket is fixed to the first shell, and the second bracket is fixed to the second shell.

[0071] It should be noted that the first bracket and the second bracket can be independent shell structures that can jointly carry the flexible display screen, and can be driven by a rotating mechanism to enable the first bracket and the second bracket as shell structures to achieve relative folding and relative unfolding, thereby enabling the electronic device to switch between a closed state and a flattened state, and maintain the closed state and the flattened state. Alternatively, the first bracket and the second bracket can also be independent components, and can be driven by a rotating mechanism to enable the first bracket and the second bracket as components to achieve relative folding and relative unfolding. Since the first bracket and the second bracket are respectively fixed to the first shell and the second shell, the first shell and the second shell can achieve relative folding and relative unfolding through the relative folding and relative unfolding of the first bracket and the second bracket, thereby enabling the electronic device to switch between a closed state and a flattened state, and maintain the closed state and the flattened state.

[0072] The structure of the rotating mechanism provided by the technical solution of the present application has, on the one hand, a small number of motion transmission stages, which can make the rotational movements of the first synchronous swing arm and the second synchronous swing arm more synchronized, and can also adjust the size of the single parts to adapt to diversified application scenarios with different transmission distances (for example, the size of the first synchronous swing arm, the connecting rod and the second synchronous swing arm can be made relatively large in application scenarios with long transmission distances), which is highly practical and has a wide range of applications. On the other hand, it can also make the folding and unfolding movements of the first synchronous swing arm and the second synchronous swing arm more symmetrical, thereby making the rotational movements of the first shell and the second shell synchronized and consistent, making it easier to realize the shell pulling movement in the process of the folding device changing from the flattened state to the closed state, and the shell pushing movement in the process of the folding device changing from the closed state to the flattened state, which is conducive to improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] Figure 1 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0074] Figure 2 yes Figure 1 an exploded schematic diagram of the electronic device shown;

[0075] Figure 3 yes Figure 2 An enlarged schematic diagram of area A of the electronic device shown;

[0076] Figure 4is an exploded schematic diagram of a partial structure of an electronic device provided in an embodiment of the present application;

[0077] Figure 5 yes Figure 4 An enlarged schematic diagram of area A of the electronic device shown;

[0078] Figure 6 is a schematic diagram of the structure of the folding device provided in an embodiment of the present application applied to an electronic device;

[0079] Figure 7 is a structural schematic diagram of a rotation mechanism provided in the first embodiment of the present application at one angle;

[0080] Figure 8 is a structural schematic diagram of a rotating mechanism provided in the second embodiment of the present application;

[0081] Fig. 9 is a structural schematic diagram of a rotating mechanism provided in the third embodiment of the present application;

[0082] Fig.10 It is a schematic diagram of an exploded structure of the rotating mechanism provided in the first embodiment of the present application;

[0083] Fig.11 This is a schematic diagram of a state of the rotating mechanism provided in the first embodiment of the present application;

[0084] Fig.12 is a schematic diagram of another state of the rotating mechanism provided in the first embodiment of the present application;

[0085] Fig.13 This is another state schematic diagram of the rotating mechanism provided in the first embodiment of the present application;

[0086] Fig.14 is a flattened structural schematic diagram of the rotating mechanism provided in the first embodiment of the present application;

[0087] Fig.15 It is a schematic structural diagram of the folding of the rotating mechanism provided in the first embodiment of the present application;

[0088] Fig.16 is a flattened structural schematic diagram of the rotating mechanism provided in the second embodiment of the present application;

[0089] Fig.17 is a schematic structural diagram of the folding of the rotating mechanism provided in the second embodiment of the present application;

[0090] Fig.18 is a flattened structural schematic diagram of a rotating mechanism provided in the third embodiment of the present application;

[0091] Fig.19It is a schematic diagram of the folding structure of the rotating mechanism provided in the third embodiment of the present application. DETAILED DESCRIPTION

[0092] The specific implementation of the present application will be clearly described below in conjunction with the accompanying drawings.

[0093] See also Figure 1 The embodiment of the present application provides an electronic device 2000, which has a foldable performance, and the electronic device 2000 can be, but is not limited to, a mobile phone, a tablet computer, an e-reader, a laptop computer, a vehicle-mounted device, etc. In the embodiment of the present application, for ease of understanding, the electronic device 2000 such as a mobile phone, which has a wide range of users and rich application scenarios, is used as an example for description, but is not limited to this.

[0094] Please refer to Figure 1-Figure 5 , the electronic device 2000 includes a flexible display screen 1100, a first shell 1200, a second shell 1300 and a folding device 1000. The folding device 1000 can make the first shell 1200 and the second shell 1300 relatively unfold to a flat state, or can make the first shell 1200 and the second shell 1300 relatively fold to a closed state, or can make the first shell 1200 and the second shell 1300 be in an intermediate state between the flat state and the closed state, so as to achieve the foldable performance of the electronic device 2000. The flexible display screen 1100 is fixed on the first shell 1200 and the second shell 1300, and can be used to display information and provide an interactive interface for the user. It can be unfolded as the first shell 1200 and the second shell 1300 are relatively unfolded, and folded as the first shell 1200 and the second shell 1300 are relatively folded. Exemplarily, the flexible display screen 1100 can be fixed to the first shell 1200 and the second shell 1300 by dispensing glue.

[0095] It should be noted that Figure 1-Figure 5 The purpose is only to schematically describe the connection relationship between the first housing 1200, the second housing 1300, the folding device 1000 and the flexible display screen 1100, and it does not specifically limit the connection position, specific structure and quantity of each device. The structure illustrated in the embodiment of the present application does not constitute a specific limitation on the electronic device 2000. In other embodiments of the present application, the electronic device 2000 may include more or fewer components than shown in the figure, or combine certain components, or split certain components, or arrange the components differently. The illustrated components can be implemented in hardware, software, or a combination of software and hardware.

[0096] Please refer to Figure 2-Figure 6 The folding device 1000 includes a rotating mechanism 100 , a first bracket 200 , a second bracket 300 and a supporting frame 400 .

[0097] The support frame 400 can maintain a stationary state during the relative folding and relative unfolding of the first support frame 200 and the second support frame 300. In other words, during the relative folding and relative unfolding of the first support frame 200 and the second support frame 300, the support frame 400 can keep its position unchanged, that is, the support frame 400 is relatively stationary, while the first support frame 200 and the second support frame 300 can both rotate relative to the support frame 400.

[0098] At least part of the rotating mechanism 100 is fixed to the support frame 400, and the rotating mechanism 100 is also connected between the first bracket 200 and the second bracket 300, and can be deformed so that the first bracket 200 and the second bracket 300 can be relatively folded or relatively unfolded. In other words, the rotating structure 100 can cause relative movement between the first bracket 200 and the second bracket 300. It can be understood that the number of rotating mechanisms 100 can be designed according to actual needs, and it can be one, two or more, and the embodiments of the present application do not impose strict restrictions on this. For example, Figure 4 As shown, the number of the rotating mechanisms 100 may be three.

[0099] It should be noted that the first bracket 200 and the second bracket 300 may be independent shell structures that can jointly carry the flexible display screen 1100, and can be driven by the rotating mechanism 100 to enable the first bracket 200 and the second bracket 300 as shell structures to achieve relative folding and relative unfolding, thereby enabling the electronic device 2000 to switch between the closed state and the flattened state, and maintain the closed state and the flattened state. Alternatively, the first bracket 200 and the second bracket 300 may also be independent components, and can be driven by the rotating mechanism 100 to enable the first bracket 200 and the second bracket 300 as components to achieve relative folding and relative unfolding.

[0100] The following will take the first bracket 200 and the second bracket 300 as independent components, and illustrate the relative folding and relative unfolding of the first bracket 200 and the second bracket 300 to make the first shell 1200 and the second shell 1300 relatively folded or relatively unfolded as an example, but it should be understood that this is not limited to this.

[0101] Exemplarily, the first bracket 200 and the second bracket 300 are fixed to the first shell 200 and the second shell 300, respectively, so that the first shell 200 and the second shell 300 can be relatively folded and unfolded by the relative folding and relative unfolding of the first bracket 200 and the second bracket 300, so that the electronic device 2000 can be switched between the closed state and the flattened state, and maintained in the closed state and the flattened state.

[0102] It can be understood that the first bracket 200 is fixed to the first shell 1200, and the second bracket 300 is fixed to the second shell 1300. Therefore, when the first bracket 200 and the second bracket 300 are relatively folded, the first shell 1200 and the second shell 1300 are also relatively folded, and when the first bracket 200 and the second bracket 300 are relatively unfolded, the first shell 1200 and the second shell 1300 are also relatively unfolded.

[0103] Based on this, in the following text, “the first shell 1200 and the second shell 1300 are relatively folded” may be equivalent to “the first bracket 200 and the second bracket 300 are relatively folded”, “the first shell 1200 and the second shell 1300 are relatively unfolded” may be equivalent to “the first bracket 200 and the second bracket 300 are relatively unfolded”, “the first shell 1200 and the second shell 1300 are relatively folded to a closed state” may be equivalent to “the first bracket 200 and the second bracket 300 are relatively folded to a closed state”, and “the first shell 1200 and the second shell 1300 are relatively unfolded to a flattened state” may be equivalent to “the first bracket 200 and the second bracket 300 are relatively unfolded to a flattened state”, and the explanation of such descriptions in the following text will not be repeated.

[0104] In an embodiment of the present application, the first shell 1200 and the second shell 1300 can be relatively unfolded to a flattened state so that the electronic device 2000 is in a flattened state. Exemplarily, when the first shell 1200 and the second shell 1300 are in a flattened state, the angle between the two can be set to be approximately 180° (a small deviation is also allowed, such as 175°, 178° or 185°). The first shell 1200 and the second shell 1300 can also be relatively folded to a closed state so that the electronic device 2000 is in a closed state. Exemplarily, when the first shell 1200 and the second shell 1300 are in a closed state, the two can be completely closed to be parallel to each other (a small deviation is also allowed). The first shell 1200 and the second shell 1300 can also rotate relatively and approach each other (fold) or move away from each other (unfold) to an intermediate state so that the electronic device 2000 is in an intermediate state, wherein the intermediate state can be any state between the flattened state and the closed state. Exemplarily, when the first shell 1200 and the second shell 1300 are in an intermediate state, the angle between the two can be 135°, 90° or 45°.

[0105] Thus, the electronic device 2000 can be switched between the flattened state and the closed state by the driving of the rotating mechanism 100 , and can be maintained in the flattened state and the closed state.

[0106] When the electronic device 2000 is in a flattened state, the plane size of the electronic device 2000 is relatively large, and the flexible display screen 1100 is flattened and in a flattened state. At this time, the flexible display screen 1100 can be displayed in full screen, so the electronic device 2000 has a large display area, can present the effect of large screen display, and improve the user experience. When the electronic device 2000 is in a folded state, the plane size of the electronic device 2000 is relatively small, which is convenient for the user to store and carry. For example, the electronic device 2000 can use the folding device 1000 to realize the inward folding of the flexible display screen 1100. At this time, the flexible display screen 1100 can be sandwiched between the first shell 1200 and the second shell 1300, that is, the flexible display screen 1100 can be located inside the first shell 1200 and the second shell 1300 and present a state of being wrapped by the first shell 1200 and the second shell 1300. Alternatively, the electronic device 2000 may use the folding device 1000 to fold the flexible display screen 1100 outward. At this time, the flexible display screen 1100 may be exposed to the outside as the appearance structure of the electronic device 2000, that is, the flexible display screen 1100 may be located on the outside of the first shell 1200 and the second shell 1300 and present a state of wrapping the first shell 1200 and the second shell 1300.

[0107] For more information, please refer again to Figure 2 , the flexible display screen 1100 includes a first non-bending portion 1110, a bending portion 1120 and a second non-bending portion 1130 connected in sequence, the first non-bending portion 1110 is fixed to the first shell 1200, and the second non-bending portion 1130 is fixed to the second shell 1300. During the relative folding and relative unfolding of the first shell 1200 and the second shell 1300, the bending portion 1120 is deformed. Exemplarily, the flexible display screen 1100 can be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode (mini organic light-emitting diode) display screen, a micro organic light-emitting diode (micro organic light-emitting diode) display screen, a micro organic light-emitting diode (micro organic light-emitting diode) display screen, and a quantum dot light emitting diode (quantum dot light emitting diodes, QLED) display screen.

[0108] In an embodiment of the present application, the electronic device 2000 optimizes the rotating mechanism 100 of the folding device 1000 so that the rotating mechanism 100 of the folding device 1000 has a smaller number of parts, a simple matching relationship, and can ensure the synchronous movement effect of the first shell 1200 and the second shell 1300 during the deformation process, which is beneficial to improving the user experience, which will be explained in detail below.

[0109] Please refer to Figure 7 , Figure 8 and Fig. 9 The rotating structure 100 includes a first synchronous swing arm 10 , a second synchronous swing arm 20 , a connecting structure 30 , a fixing structure 40 , a first shaft 51 , a second shaft 52 , a third shaft 53 , and a fourth shaft 54 ​​.

[0110] In the embodiment of the present application, the fixed structure 40 can be fixed to the support frame 400, so that during the relative folding or relative unfolding of the first shell 1200 and the second shell 1300, its position can be kept unchanged, and only the first shell 1200 and the second shell 1300 can be rotated synchronously relative to the fixed structure 40, and when the first shell 1200 and the second shell 1300 are relatively folded to a closed state, the fixed structure 40 is located between the first shell 1200 and the second shell 1300. That is, the fixed structure 40 can maintain a relatively static state, and the first shell 1200 and the second shell 1300 can both rotate relative to the fixed structure 40. In a possible embodiment, the fixed structure 40 and the support frame 400 are integrally formed. It should be noted that the fixed structure 40 can be a single structural member or a combination of multiple structural members, and it only needs to be able to fix the corresponding structure (such as the first shaft 51 and the second shaft 52) ​​in the rotating mechanism. The embodiment of the present application does not strictly limit the specific structural form of the fixed structure 40.

[0111] Please continue reading Figure 6 , Figure 7 and Figure 8 , the first shaft 51 is connected to both the first synchronous swing arm 10 and the fixed structure 40, and the first synchronous swing arm 10 can rotate relative to the fixed structure 40. In other words, the first synchronous swing arm 10 is rotationally connected to the fixed structure 40 through the first shaft 51. It should be understood that the first synchronous swing arm 10 can rotate relative to the fixed structure 40, so the first synchronous swing arm 10 has a rotation center, and the rotation center is a straight line around which the first synchronous swing arm 10 can make a circular motion.

[0112] In the embodiment of the present application, the center line of the first shaft body 51 is defined as the first axis 511. Since the first shaft body 51 is connected to the fixed structure 40, and the position of the fixed structure 40 is fixed and does not change, the position of the first shaft body 51 is fixed and does not change. Based on this, the position of the first axis 511 is also fixed and does not change. Since the first synchronous swing arm 10 can rotate relative to the fixed structure 40, and the first synchronous swing arm 10 is connected to the first shaft body 51 connected to the fixed structure 40, the first synchronous swing arm 10 can rotate relative to the first shaft body 51. That is, the first synchronous swing arm 10 can rotate clockwise or counterclockwise around the first shaft body 51.

[0113] It can be understood that the first axis 511 can be colinear with the rotation center of the first synchronous swing arm 10. Therefore, the first synchronous swing arm 10 can rotate around the first axis 511. That is, the first synchronous swing arm 10 can rotate around the first axis 511 clockwise or counterclockwise.

[0114] In addition, the first synchronous swing arm 10 is also connected to the first bracket 200, and the first bracket 200 is fixed to the first housing 1200. Therefore, when the first synchronous swing arm 10 drives the first bracket 200 to rotate, due to the fixed relationship between the first bracket 200 and the first housing 1200, the first housing 1200 can be driven by the first synchronous swing arm 10 to rotate synchronously.

[0115] That is, the first synchronous swing arm 10 can drive the first housing 1200 to rotate together through its own rotational motion, or can be driven to rotate together with the rotational motion of the first housing 1200. Specifically, the first synchronous swing arm 10 can drive the first housing 1200 to rotate together when rotating around the first axis 511, or can be driven to rotate together around the first axis 511 when the first housing 1200 rotates.

[0116] It should be understood that the connection relationship between the first synchronous swing arm 10 and the first shell 1200 can be a direct connection between the two, or an indirect connection relationship through a structural member (such as the first bracket 200). As long as the first synchronous swing arm 10 can drive the first shell 1200 to rotate synchronously when it rotates, the embodiment of the present application does not impose strict restrictions on this.

[0117] Please continue reading Figure 6 , Figure 7 and Figure 8, the second shaft 52 is connected to both the second synchronous swing arm 20 and the fixed structure 40, and the second synchronous swing arm 20 can rotate relative to the fixed structure 40. In other words, the second synchronous swing arm 20 is rotationally connected to the fixed structure 40 through the second shaft 52. It should be understood that the second synchronous swing arm 20 can rotate relative to the fixed structure 40, so the second synchronous swing arm 20 has a rotation center, and the rotation center is a straight line around which the second synchronous swing arm 20 can make a circular motion.

[0118] In the embodiment of the present application, the center line of the second shaft body 52 is defined as the second axis 521. Since the second shaft body 52 is connected to the fixed structure 40, and the position of the fixed structure 40 is fixed and will not change, the position of the second shaft body 52 is fixed and will not change. Based on this, the position of the second axis 521 is also fixed and will not change. Since the second synchronous swing arm 20 can rotate relative to the fixed structure 40, and the second synchronous swing arm 20 is connected to the second shaft body 52 connected to the fixed structure 40, the second synchronous swing arm 20 can rotate relative to the second shaft body 52. ​​That is, the second synchronous swing arm 20 can rotate clockwise or counterclockwise around the second shaft body 52.

[0119] It is understandable that the second shaft 52 can be colinear with the rotation center of the second synchronous swing arm 20. Thus, the second synchronous swing arm 20 can rotate around the second axis 521. That is, the second synchronous swing arm 20 can rotate around the second axis 521 clockwise or counterclockwise.

[0120] In addition, the second synchronous swing arm 20 is also connected to the second bracket 300, and the second bracket 300 is fixed to the second housing 1300. Therefore, when the second synchronous swing arm 20 drives the second bracket 300 to rotate, due to the fixed relationship between the second bracket 300 and the second housing 1300, the first housing 1200 can be driven by the second synchronous swing arm 20 to rotate synchronously.

[0121] That is, the second synchronous swing arm 20 can drive the second housing 1300 to rotate together through its own rotational movement, or can be driven to rotate together with the rotational movement of the second housing 1300. Specifically, the second synchronous swing arm 20 can drive the second housing 1300 to rotate together when rotating around the second axis 521, or can be driven to rotate around the second axis 521 when the second housing 1300 rotates.

[0122] It should be understood that the connection relationship between the second synchronous swing arm 20 and the second shell 1300 can be a direct connection between the two, or an indirect connection relationship through a structural member (such as the second bracket 300). As long as the second synchronous swing arm 20 can drive the second shell 1300 to rotate synchronously when it rotates, the embodiment of the present application does not impose strict restrictions on this.

[0123] The connecting structure 30 connects the first synchronous swing arm 10 and the second synchronous swing arm 20 to transfer motion and force between the first synchronous swing arm 10 and the second synchronous swing arm 20. Specifically, the third shaft 53 is connected to both the first synchronous swing arm 10 and the connecting structure 30, and the first synchronous swing arm 10 and the connecting structure 30 can rotate relative to each other. In other words, the connecting structure 30 is rotationally connected to the first synchronous swing arm 10 through the third shaft 53. The fourth shaft 54 ​​is connected to both the second synchronous swing arm 20 and the connecting structure 30, and the second synchronous swing arm 20 and the connecting structure 30 can rotate relative to each other. In other words, the connecting structure 30 is rotationally connected to the second synchronous swing arm 20 through the fourth shaft 54. In addition, the third shaft 53 and the first shaft 51 are arranged at intervals, and the fourth shaft 54 ​​and the second shaft 52 are arranged at intervals, so that interference between the various components in the rotating mechanism 100 can be effectively avoided, so that the layout of the various components in the rotating mechanism 100 is reasonable.

[0124] It should be noted that the connecting structure 30 can be a single structural component or a combination of multiple structural components. It only needs to be able to connect the corresponding structures in the rotating mechanism (for example, the first synchronous swing arm 10 and the second synchronous swing arm 20). The embodiment of the present application does not strictly limit the specific structural form of the connecting structure 30.

[0125] It is understandable that, since the first synchronous swing arm 10 is connected to the connection structure 30 and the two can rotate relative to each other, the first synchronous swing arm 10 can drive the connection structure 30 to move due to the change of the coordinates of the connection between the first synchronous swing arm 10 and the connection structure 30 when the first synchronous swing arm 10 is rotating, so that the first synchronous swing arm 10 and the connection structure 30 can be close to each other (the angle between the first synchronous swing arm 10 and the connection structure 30 gradually decreases) or away from each other (the angle between the first synchronous swing arm 10 and the connection structure 30 gradually increases). Since the connection structure 30 is also connected to the second synchronous swing arm 20, and the connection structure 30 and the second synchronous swing arm 20 can rotate relative to each other, the connection structure 30 is driven to move due to the rotation of the first synchronous swing arm 10, and the second synchronous swing arm 20 is driven to rotate synchronously, so that the second synchronous swing arm 20 and the connection structure 30 are also close to each other (the angle between the second synchronous swing arm 20 and the connection structure 30 gradually decreases) or away from each other (the angle between the second synchronous swing arm 20 and the connection structure 30 gradually increases).

[0126] Therefore, the first synchronous swing arm 10 can synchronize the movement with the second synchronous swing arm 20, and the synchronization component formed by the first synchronous swing arm 10 and the second synchronous swing arm 20 has a simple structure, an easy-to-control movement process, and high accuracy, and can synchronize the movement of the first shell 1200 and the second shell 1300, thereby simplifying the structural design and connection relationship of the rotating mechanism 100 and improving the reliability of the rotating mechanism 100.

[0127] It should be noted that the above only takes the first synchronous swing arm 10 as the active part and the second synchronous swing arm 20 as the passive part as an example to illustrate the synchronization function of the two. The principle of realizing the synchronization function of the two by the second synchronous swing arm 20 as the active part and the first synchronous swing arm 10 as the passive part is substantially the same as the principle of the first synchronous swing arm 10 as the active part and the second synchronous swing arm 20 as the passive part, which can be referred to the above description and will not be repeated here.

[0128] In the embodiment of the present application, by connecting the connecting structure 30 to the first synchronous swing arm 10 and the second synchronous swing arm 20 respectively, when the first synchronous swing arm 10 performs rotational motion as an active component, the connecting structure 30 can be driven to move by the change of the coordinates of the connection between the first synchronous swing arm 10 and the connecting structure 30, and then the second synchronous swing arm 20 is passively rotated through the power transmission effect of the connecting structure 30, even if the second synchronous swing arm 20 performs rotational motion synchronously as a passive component.

[0129] When the second synchronous swing arm 20 performs rotational motion as an active component, the connection structure 30 can be driven to move by the change of the coordinates of the connection between the second synchronous swing arm 20 and the connection structure 30, and then the first synchronous swing arm 10 can be passively rotated through the power transmission of the connection structure 30, even if the first synchronous swing arm 10 performs rotational motion synchronously as a passive component.

[0130] Therefore, no matter which one of the first synchronous swing arm 10 and the second synchronous swing arm 20 is used as the active part to perform rotational motion, the other one can be used as the passive part to rotate synchronously under the action of the connecting structure 30, so that the rotational motion of the first synchronous swing arm 10 and the second synchronous swing arm 20 has good synchronization and consistency, and can rotate synchronously towards each other to approach each other or rotate synchronously away from each other. In addition, because the first synchronous swing arm 10 is connected to the first shell 1200, and the second synchronous swing arm 20 is connected to the second shell 1300, the first shell 1200 and the second shell 1300 can be relatively folded in the process of the first synchronous swing arm 10 and the second synchronous swing arm 20 approaching each other, and the first shell 1200 and the second shell 1300 can be relatively unfolded in the process of the first synchronous swing arm 10 and the second synchronous swing arm 20 moving away from each other. The synchronization and consistency of the first shell 1200 and the second shell 1300 are also good.

[0131] In addition, since the rotating mechanism 100 has a small number of parts, the matching relationship of the parts is simple, the transmission chain is short, the number of motion transmission times is small, and the cumulative error is small, the control accuracy of the rotating mechanism 100 is high, and the synchronous movement effect of the two shells can be ensured during the deformation process, thereby improving the rotation accuracy of the folding device 1000, which is beneficial to improving the user experience of the electronic device 2000 using the folding device 1000.

[0132] Please refer to Figure 3 , Figure 6 and Figure 7 In the embodiment of the present application, the first synchronous swing arm 10 is connected to the fixed structure 40, and the second synchronous swing arm 20 is also connected to the fixed structure 40 and is arranged opposite to the first synchronous swing arm 10. During the relative folding or relative unfolding of the first housing 1200 and the second housing 1300, the first synchronous swing arm 10 and the second synchronous swing arm 20 rotate synchronously relative to the fixed structure 40. As a result, the positions of the rotation centers of the first synchronous swing arm 10 and the second synchronous swing arm 20 are fixed and will not change. Exemplarily, when the first synchronous swing arm 10 and the second synchronous swing arm 20 rotate toward each other, the first housing 1200 and the second housing 1300 are relatively folded. When the first synchronous swing arm 10 and the second synchronous swing arm 20 rotate away from each other, the first housing 1200 and the second housing 1300 are relatively unfolded.

[0133] It can be understood that, since the fixing structure 40 is fixed to the support frame 400, when the first shell 1200 and the second shell 1300 are relatively folded to a closed state, the support frame 400 is located between the first shell 1200 and the second shell 1300, and therefore, when the first shell 1200 and the second shell 1300 are relatively folded to a closed state, the fixing structure 40 is also located between the first shell 1200 and the second shell 1300. In other words, the position of the fixing structure 40 can be fixed and remain unchanged relative to the first shell 1200 and the second shell 1300, whose positions may change.

[0134] Therefore, connecting the first synchronous swing arm 10 and the second synchronous swing arm 20 to the fixed structure 40 can make the first synchronous swing arm 10 and the second synchronous swing arm 20 rotate smoothly and reliably due to the fixed position of the rotation center, and when the first synchronous swing arm 10 and the second synchronous swing arm 20 rotate, the rotation angles of the first shell 1200 and the second shell 1300 relative to the fixed structure 40 can be controlled to be consistent, so that the rotation movement of the first shell 1200 and the second shell 1300 is synchronized and consistent, and the folding action and unfolding action of the folding device 1000 are better symmetrical, which is beneficial to improving the user experience.

[0135] Based on the above description, the first shaft body 51 and the second shaft body 52 are connected to the fixed structure 40, so the first shaft body 51 and the second shaft body 52 are fixed shaft bodies. The third shaft body 53 and the fourth shaft body 54 are connected to the connection structure 30, so the third shaft body 53 and the fourth shaft body 54 are non-fixed shaft bodies. Therefore, the axis center of the first shaft body 51 and the axis center of the second shaft body 52 are fixed axis centers, and the axis center of the third shaft body 52 and the axis center of the fourth shaft body 54 are non-fixed axis centers, wherein the axis center is the center line of the shaft body.

[0136] In the embodiment of the present application, the first axis 511 (i.e., the axis of the first shaft body 51) and the second axis 521 (i.e., the axis of the second shaft body 52) can be symmetrically arranged so that the shaft bodies in the rotating mechanism 100 with the connecting structure 30 and the fixed structure 40 can form a symmetrical layout of "fixed axis-non-fixed axis-non-fixed axis-fixed axis". Alternatively, the first axis 511 (i.e., the axis of the first shaft body 51) and the second axis 521 (i.e., the axis of the second shaft body 52) can also be asymmetrically arranged so that the shaft bodies in the rotating mechanism 100 with the connecting structure 30 and the fixed structure 40 can form an asymmetrical staggered layout of "fixed axis-non-fixed axis-fixed axis-non-fixed axis". Therefore, the rotational movements of the first synchronous swing arm 10 and the second synchronous swing arm 20 can have good consistency and synchronization, and the relative positional relationship of multiple shafts has diversified possibilities, strong practicality and a wide range of applications. The following will use three specific embodiments to fully and thoroughly describe the positional relationship between the first axis 511 and the second axis 521, as well as the connection relationship and synchronization principle of each structure of the rotating mechanism 100.

[0137] First embodiment:

[0138] Please refer to Figure 5 , Figure 6 , Figure 7 and Fig.10 In the first embodiment of the present application, the first synchronous swing arm 10 includes a sliding end 11 and a rotating end 12. The sliding end 11 of the first synchronous swing arm 10 is connected to the first bracket 200, and the rotating end 12 of the first synchronous swing arm 10 is connected to both the connecting structure 30 and the fixed structure 40. The second synchronous swing arm 20 includes a sliding end 21 and a rotating end 22. The sliding end 21 of the second synchronous swing arm 20 is connected to the first bracket 200, and the rotating end 22 of the second synchronous swing arm 20 is connected to both the connecting structure 30 and the fixed structure 40.

[0139] Exemplarily, the shapes of the first synchronous swing arm 10 and the second synchronous swing arm 20 are generally in the shape of "~". Therefore, when the first synchronous swing arm 10 and the second synchronous swing arm 20 are installed on the fixed structure 40, they can present good symmetry, which is conducive to the synchronization and consistency of the rotation of the first shell 1200 and the second shell 1300 during the relative rotation of the first synchronous swing arm 10 and the second synchronous swing arm 20.

[0140] Specifically, the rotating end 12 of the first synchronous swing arm 10 includes a front face 121, a back face 122, and a peripheral side face 123 connecting the front face 121 and the back face 122. The front face 121, the back face 122, and the peripheral side face 123 of the rotating end 12 of the first synchronous swing arm 10 are connected to each other to form the outer surface of the rotating end 12 of the first synchronous swing arm 10. The rotating end 22 of the second synchronous swing arm 20 includes a front face 221, a back face 222, and a peripheral side face 223 connecting the front face 221 and the back face 222. The front face 221, the back face 222, and the peripheral side face 223 of the rotating end 22 of the second synchronous swing arm 20 are connected to each other to form the outer surface of the rotating end 22 of the second synchronous swing arm 20.

[0141] In this embodiment, the connecting structure 30 is a connecting rod. The fixing structure 40 includes a first fixing frame 41 and a second fixing frame 42. The first fixing frame 41 and the second fixing frame 42 are both installed on the support frame 400, and the first fixing frame 41 and the second fixing frame 42 are arranged at intervals along the axial direction, and the axial direction can be understood as the extension direction of the first shaft body 51. The first fixing frame 41 and the second fixing frame 42 arranged at intervals form an installation space for the rotating mechanism 100, which can provide a guiding effect for the installation of the rotating mechanism 100.

[0142] In a possible implementation, the first fixing frame 41 and / or the second fixing frame 42 may be provided with one or more notches 43, and these notches 43 are used to avoid interference with other components of the folding device 1000, that is, to achieve avoidance, thereby improving the movement reliability of the rotating mechanism 100 and the folding device 1000.

[0143] Please refer to Figure 7 and Fig.10 The two ends of the first fixing frame 41 are respectively connected to the front face 121 of the rotating end 12 of the first synchronous swing arm 10 and the front face 221 of the rotating end 22 of the second synchronous swing arm 20, and the two ends of the second fixing frame 42 are respectively connected to the back face 122 of the rotating end 12 of the first synchronous swing arm 10 and the back face 222 of the rotating end 22 of the second synchronous swing arm 20. In other words, the rotating end 12 of the first synchronous swing arm 10 and the rotating end 12 of the first synchronous swing arm 10 are sandwiched between the first fixing frame 41 and the second fixing frame 42.

[0144] Therefore, by setting the first fixing frame 41 and the second fixing frame 42, and connecting the first fixing frame 41 and the second fixing frame 42 to the front side 121, 221 and the back side 122, 222 of the first synchronous swing arm 10 and the second synchronous swing arm 20 respectively, the possibility of the first synchronous swing arm 10 and the second synchronous swing arm 20 being loosened can be reduced to a minimum, thereby ensuring the connection strength of the first synchronous swing arm 10 and the second synchronous swing arm 20 and the reliability and stability during rotational movement.

[0145] The peripheral side surface 123 of the rotating end 12 of the first synchronous swing arm 10 is recessed inward to form a first receiving groove 124, which can make the rotating end 12 of the first synchronous swing arm 10 present a "U" shape. Therefore, it is convenient to connect the rotating end 12 of the first synchronous swing arm 10 with the first fixed frame 41 and the second fixed frame 42, and the connecting rod (connecting structure 30) with the first synchronous swing arm 10, saving the space occupied by the rotating mechanism 100, which is conducive to realizing the lightweight folding device 1000 and the electronic device 2000 using the folding device 1000. The peripheral side surface 223 of the rotating end 22 of the second synchronous swing arm 20 is recessed inward to form a second receiving groove 224, which can make the rotating end 22 of the second synchronous swing arm 20 present a "U" shape. In this way, it is possible to facilitate the connection between the rotating end 22 of the second synchronous swing arm 20 and the first fixed frame 41 and the second fixed frame 42, and the connection between the connecting rod (connecting structure 30) and the second synchronous swing arm 20, saving the space occupied by the rotating mechanism 100, which is conducive to realizing the lightweight and thin folding device 1000 and the electronic device 2000 using the folding device 1000.

[0146] Specifically, the two ends of the connecting rod (connecting structure 30) are respectively installed on the first receiving groove 124 and the second receiving groove 224, so that through the cooperation of the first receiving groove 124 and the second receiving groove 224, the connecting rod (connecting structure 30) can only reciprocate within the activity space restricted by the first receiving groove 124 and the second receiving groove 224.

[0147] Please refer to Fig.11 , Fig.12 and Fig.13 , illustratively, the first synchronous swing arm 10 rotates around the first axis 511, driving the connecting rod (connecting structure 30) to move toward the first synchronous swing arm 10, and the angle between the first synchronous swing arm 10 and the connecting rod (connecting structure 30) gradually decreases due to the relative rotation of the two. At this time, the connecting rod (connecting structure 30) pulls the second synchronous swing arm 20, so that the second synchronous swing arm 20 rotates synchronously counterclockwise around the second axis 521, and the angle between the connecting rod (connecting structure 30) and the second synchronous swing arm 20 gradually decreases due to the relative rotation of the two. As a result, the first synchronous swing arm 10 and the second synchronous swing arm 20 can approach each other, thereby driving the first shell 1200 and the second shell 1300 to fold relative to each other.

[0148] Alternatively, the first synchronous swing arm 10 rotates counterclockwise around the first axis 511, driving the connecting rod (connecting structure 30) to move toward the second synchronous swing arm 20, and the angle between the first synchronous swing arm 10 and the connecting rod (connecting structure 30) gradually increases due to the relative rotation of the two. At this time, the connecting rod (connecting structure 30) pushes the second synchronous swing arm 20, so that the second synchronous swing arm 20 rotates clockwise around the second axis 521 synchronously, and the angle between the connecting rod (connecting structure 30) and the second synchronous swing arm 20 gradually increases due to the relative rotation of the connection. As a result, the first synchronous swing arm 10 and the second synchronous swing arm 20 can move away from each other, thereby driving the first housing 1200 and the second housing 1300 to expand relative to each other.

[0149] In a possible implementation, one or more protrusions are further provided on the first synchronous swing arm 10 and the second synchronous swing arm 20, which can stop the first synchronous swing arm 10 and the second synchronous swing arm 20 when the folding device 1000 is in an open state, so as to prevent the folding device 1000 from being over-folded when unfolded, thereby reducing the stress on the flexible display screen 1100 and improving the reliability of the flexible display screen 1100 and the electronic device 2000.

[0150] In this embodiment, in addition to the first shaft 51, the second shaft 52, the third shaft 53, and the fourth shaft 54, the rotating mechanism 100 further includes a first connecting shaft 58 and a second connecting shaft 59. By providing a plurality of shafts, it is possible to achieve connection between various parts in the rotating mechanism 100 and between the rotating mechanism 100 and the first shell 1200 and the second shell 1300. Compared with the traditional rotating structure 100 in which various parts need to be connected through complex components such as gear meshing, this embodiment can achieve reliable connection only by the cooperation between various shafts and various parts, has a simple structure, low processing difficulty, and is easy to achieve high processing accuracy.

[0151] The specific implementation of the connection relationship between the components of the rotating mechanism 100 in this embodiment will be described in detail below.

[0152] Please refer to Figure 7 and Fig.10, the first shaft 51 is inserted into the first fixed frame 41, the rotating end 12 of the first synchronous swing arm 10 and the second fixed frame 42. At this time, one end of the first shaft 51 is connected to the first fixed frame 41, the first shaft 51 passes through the rotating end 12 of the first synchronous swing arm 10, and the other end of the first shaft 51 is connected to the second fixed frame 42. Therefore, the first shaft 51 can be connected to both the rotating end 12 of the first synchronous swing arm 10 and the fixed structure 40, and because the first synchronous swing arm 10 can rotate relative to the fixed structure 40, a reliable connection relationship can be formed between the first synchronous swing arm 10 and the fixed structure 40 through the connection effect of the first shaft 51. That is, the first synchronous swing arm 10 can be rotatably connected to the fixed structure 40 through the first shaft 51.

[0153] Please refer to Figure 7 and Fig.10 Since the two ends of the first shaft body 51 are connected to the first fixing frame 41 and the second fixing frame 42 respectively, the position of the first shaft body 51 is fixed and will not change. Based on this, the position of the first axis 511 is also fixed and will not change. Since the first shaft body 51 is connected to the first synchronous swing arm 10, and the first synchronous swing arm 10 can rotate relative to the first fixing frame 41 and the second fixing frame 42, the first synchronous swing arm 10 can rotate relative to the first shaft body 51.

[0154] In this embodiment, the first axis 511 may be colinear with the rotation center of the first synchronous swing arm 10. Thus, the first synchronous swing arm 10 can rotate around the first axis 511. Exemplarily, during the relative folding of the first housing 1200 and the second housing 1300, the first synchronous swing arm 10 may rotate clockwise around the first axis 511. While during the relative unfolding of the first housing 1200 and the second housing 1300, the first synchronous swing arm 10 may rotate counterclockwise around the first axis 511.

[0155] The third shaft 53 is inserted into the rotating end 12 of the first synchronous swing arm 10 and the connecting rod (connecting structure 30), and the third shaft 53 and the first shaft 51 are spaced apart, and the third shaft 53 is away from the sliding end 11 of the first synchronous swing arm 10 relative to the first shaft 51. At this time, one end of the third shaft 53 is connected to one side wall of the first receiving groove 124, the third shaft 53 passes through the connecting rod (connecting structure 30), and the other end of the third shaft 53 is connected to the other side wall of the first receiving groove 124. Thus, the third shaft 53 can be connected to both the rotating end 12 of the first synchronous swing arm 10 and the connecting rod (connecting structure 30), and because the first synchronous swing arm 10 and the connecting rod (connecting structure 30) can rotate relative to each other, a reliable connection relationship can be formed between the first synchronous swing arm 10 and the connecting rod (connecting structure 30) through the connecting action of the third shaft 53. That is, the first synchronous swing arm 10 can be rotatably connected to the connecting rod (connecting structure 30) through the third shaft 53.

[0156] Please continue reading Fig.10 In this embodiment, the first fixing frame 41 is provided with an axial hole 411 for plugging the first shaft body 51, the second fixing frame 42 is provided with an axial hole 421 for plugging the first shaft body 51, the rotating end 12 of the first synchronous swing arm 10 is provided with an axial hole 125 for plugging the first shaft body 51 and an axial hole 126 for plugging the third shaft body 53, and the connecting rod (connecting structure 30) is provided with an axial hole 301 for plugging the third shaft body 53. The specific settings (such as position, shape, size, etc.) of the axial hole 411 of the first fixing frame 41, the axial hole 412 of the second fixing frame 42, the axial holes (axial hole 125 and axial hole 126) of the rotating end 12 of the first synchronous swing arm 10, and the axial hole 301 of the connecting rod (connecting structure 30) are adapted to the plug-in requirements of the first shaft body 51 and the third shaft body 53.

[0157] Therefore, the cooperation between the first synchronous swing arm 10 and the first fixed frame 41 and the second fixed frame 42 and between the first synchronous swing arm 10 and the connecting rod (connecting structure 30) are all hole-shaft cooperation, the clearance of the hole-shaft cooperation is easy to control, the cooperation relationship is simple, the processing difficulty is low, and it is easy to achieve high processing accuracy.

[0158] Exemplarily, the number of the second shaft bodies 52 is two, and the center lines of the two second shaft bodies 52 are colinear to ensure that the two second shaft bodies 52 can be arranged correspondingly without being misaligned with each other. Specifically, the two second shaft bodies 52 are used to plug the first fixed frame 41 and the rotating end 22 of the second synchronous swing arm 20 and the second fixed frame 42 and the rotating end 22 of the second synchronous swing arm 20, respectively. At this time, one second shaft body 52 passes through the first fixed frame 41 from the outside of the first fixed frame 41 and is connected to the front face 221 of the rotating end 22 of the second synchronous swing arm 20. The other second shaft body 52 passes through the second fixed frame 42 from the outside of the second fixed frame 42 and is connected to the back face 222 of the rotating end 22 of the second synchronous swing arm 20. As a result, the second shaft body 52 can be connected to both the rotating end 22 of the second synchronous swing arm 20 and the fixed structure 40, and because the second synchronous swing arm 20 can rotate relative to the fixed structure 40, a reliable connection relationship can be formed between the second synchronous swing arm 20 and the fixed structure 40 through the connecting action of the second shaft body 52. That is, the second synchronous swing arm 20 is rotatably connected to the fixed structure 40 via the second shaft 52 .

[0159] In this embodiment, since the two second shaft bodies 52 are connected to the first fixing frame 41 and the second fixing frame 42 respectively, the positions of the two second shaft bodies 52 are fixed and will not change. Based on this, the position of the second axis 521 is also fixed and will not change. Since the two second shaft bodies 52 are respectively connected to the front and back sides of the second synchronous swing arm 20, and the second synchronous swing arm 20 can rotate relative to the first fixing frame 41 and the second fixing frame 42, the second synchronous swing arm 20 can rotate relative to the second shaft bodies 52.

[0160] It can be understood that the second axis 521 can be colinear with the rotation center of the second synchronous swing arm 20. Therefore, the second synchronous swing arm 20 can rotate around the second axis 521. Exemplarily, during the relative folding of the first housing 1200 and the second housing 1300, the second synchronous swing arm 20 can rotate counterclockwise around the second axis 521. While during the relative unfolding of the first housing 1200 and the second housing 1300, the second synchronous swing arm 20 can rotate clockwise around the second axis 521.

[0161] Please refer to Fig.10 , Fig.14 and Fig.15 Based on the above description, it should be understood that in this embodiment, the rotation center of the second synchronous swing arm 20 (collinear with the second axis 521) and the rotation center of the first synchronous swing arm 10 (collinear with the first axis 511) are not symmetrically arranged, but slightly misaligned, that is, misaligned. In other words, the first axis 511 and the second axis 521 are asymmetrically arranged.

[0162] Please refer again Fig.10 , the fourth shaft body 54 is inserted into the rotating end 22 of the second synchronous swing arm 20 and the connecting rod (connecting structure 30), and the fourth shaft body 54 and the second shaft body 52 are arranged at intervals, and the fourth shaft body 54 is close to the sliding end 21 of the second synchronous swing arm 20 relative to the second shaft body 52. ​​At this time, one end of the fourth shaft body 54 is connected to one side wall of the second receiving groove 224, the fourth shaft body 54 passes through the connecting rod (connecting structure 30), and the other end of the fourth shaft body 54 is connected to the other side wall of the second receiving groove 224. Therefore, the fourth shaft body 54 can be connected to both the rotating end 22 of the second synchronous swing arm 20 and the connecting rod (connecting structure 30), and because the second synchronous swing arm 20 and the connecting rod (connecting structure 30) 20 can rotate relative to each other, a reliable connection relationship can be formed between the second synchronous swing arm 20 and the connecting rod (connecting structure 30) through the connecting action of the fourth shaft body 54. That is, the second synchronous swing arm 20 is rotatably connected to the connecting rod (connecting structure 30) 20 through the fourth shaft body 54.

[0163] In this embodiment, the first fixing frame 41 is provided with an axial hole 412 for plugging the second shaft body 52, the second fixing frame 42 is provided with an axial hole 422 for plugging the second shaft body 52, the rotating end 22 of the second synchronous swing arm 20 is provided with an axial hole 225 for plugging the second shaft body 52 and an axial hole 226 for plugging the fourth shaft body 54, and the connecting rod (connecting structure 30) is provided with an axial hole 302 for plugging the fourth shaft body 54. The specific settings (such as position, shape, size, etc.) of the axial hole 412 of the first fixing frame 41, the axial hole 422 of the second fixing frame 42, the axial holes (axial hole 225 and axial hole 226) of the rotating end 22 of the second synchronous swing arm 20, and the axial hole 302 of the connecting rod (connecting structure 30) are adapted to the plug-in requirements of the second shaft body 52 and the fourth shaft body 54.

[0164] Therefore, the cooperation between the second synchronous swing arm 20 and the first fixed frame 41 and the second fixed frame 42 and between the second synchronous swing arm 20 and the connecting rod (connecting structure 30) are all hole-shaft cooperation, the clearance of the hole-shaft cooperation is easy to control, the cooperation relationship is simple, the processing difficulty is low, and it is easy to achieve high processing accuracy.

[0165] In this embodiment, the first connecting shaft 58 is inserted into the sliding end 11 of the first synchronous swing arm 10 and the first bracket 200. Specifically, the sliding end 11 of the first synchronous swing arm 10 is connected to the first bracket 200 by rotation and sliding through the first connecting shaft 58. Therefore, in the process of relative folding or relative unfolding of the first bracket 200 and the second bracket 300, the sliding end 11 of the first synchronous swing arm 10 slides and rotates relative to the first bracket 200, based on which the first synchronous swing arm 10 can drive the first bracket 200 to perform synchronous rotation.

[0166] In a possible embodiment, one of the first bracket 200 and the sliding end 11 of the first synchronous swing arm 10 is provided with a first sliding groove, and the other is provided with a first connecting shaft 58. The first sliding groove and the first connecting shaft 58 are cooperatively connected to enable the sliding end of the first bracket and the first synchronous swing arm to slide relative to each other.

[0167] Therefore, no matter the first sliding groove is arranged on the first bracket 200 and the first connecting shaft 58 is arranged on the sliding end 11 of the first synchronous swing arm 10, or the first sliding groove is arranged on the sliding end 11 of the first synchronous swing arm 10 and the second connecting shaft is arranged on the first bracket 200, relative sliding can be achieved between the sliding end 11 of the first synchronous swing arm 10 and the first bracket 200, the connection relationship has diversified possibilities, strong practicality and wide application range.

[0168] Exemplarily, the first bracket 200 is provided with a first sliding groove 210, and the first connecting shaft 58 extends out of both ends of the first synchronous swing arm 10 and is connected to the first sliding groove 210, and the first connecting shaft 58 can slide relative to the first sliding groove 210. The sliding end 11 of the first synchronous swing arm 10 is provided with an axial hole 111 for inserting the first connecting shaft 58. The specific settings (such as position, shape, size, etc.) of the first sliding groove 210 of the first bracket 200 and the axial hole 111 of the sliding end 11 of the first synchronous swing arm 10 are adapted to the connection requirements of the first connecting shaft 58.

[0169] In other words, the first connecting shaft 58 passes through the sliding end 11 of the first synchronous swing arm 10, and both ends of the first connecting shaft 58 extend out of the first synchronous swing arm 10 and are connected to the first bracket 200, and the first connecting shaft 58 can slide relative to the first bracket 200. In other words, the first connecting shaft 58 is passed through the sliding end 11 of the first synchronous swing arm 10, and both ends of the first connecting shaft 58 extend out of the first synchronous swing arm 10 and are connected to the first bracket 200, and the first connecting shaft 58 can slide relative to the first bracket 200.

[0170] Therefore, the sliding end 11 of the first synchronous swing arm 10 is slidably connected to the first bracket 200 through the first connecting shaft 58, so that a reliable connection relationship can be formed between the first synchronous swing arm 10 and the first bracket 200 through the connecting action of the first connecting shaft 58, so that the first synchronous swing arm 10 can drive the first shell 1200 to rotate synchronously when rotating.

[0171] In this embodiment, the second connecting shaft 59 is inserted into the sliding end 21 of the second synchronous swing arm 20 and the second bracket 300. Specifically, the sliding end 21 of the second synchronous swing arm 20 is connected to the second bracket 300 by rotation and sliding through the second connecting shaft 59. Therefore, during the relative folding or relative unfolding of the first bracket 200 and the second bracket 300, the sliding end 21 of the second synchronous swing arm 20 slides and rotates relative to the second bracket 300, based on which the second synchronous swing arm 20 can drive the second bracket 300 to perform synchronous rotation.

[0172] In one possible embodiment, one of the second bracket 300 and the sliding end 21 of the second synchronous swing arm 20 is provided with a second sliding groove, and the other is provided with a second connecting shaft 59. The second sliding groove and the second connecting shaft 59 are cooperatively connected to enable the second bracket 300 and the sliding end 21 of the second synchronous swing arm 20 to slide relative to each other.

[0173] Therefore, no matter the second sliding groove is arranged on the second bracket 300 and the second connecting shaft 59 is arranged on the sliding end 21 of the second synchronous swing arm 20, or the second sliding groove is arranged on the sliding end 21 of the second synchronous swing arm 20 and the second connecting shaft 59 is arranged on the second bracket 300, relative sliding can be achieved between the sliding end 21 of the second synchronous swing arm 20 and the second bracket 300, the connection relationship has diversified possibilities, strong practicality and wide application range.

[0174] Exemplarily, the second bracket 300 is provided with a second sliding groove 310, and the second connecting shaft 59 extends out of both ends of the first synchronous swing arm 10 and is connected to the second sliding groove 310, and the second connecting shaft 59 can slide relative to the second sliding groove 310. The sliding end 21 of the second synchronous swing arm 20 is provided with an axial hole 211 for inserting the second connecting shaft 59. The specific settings (such as position, shape, size, etc.) of the second sliding groove 310 of the second bracket 300 and the axial hole 211 of the sliding end 21 of the second synchronous swing arm 20 are adapted to the connection requirements of the second connecting shaft 59.

[0175] In other words, the second connecting shaft 59 passes through the sliding end 21 of the second synchronous swing arm 20, and both ends of the second connecting shaft 59 extend out of the second synchronous swing arm 20 to be connected to the second bracket 300, and the second connecting shaft 59 can slide relative to the second bracket 300. In other words, the second connecting shaft 59 passes through the sliding end 21 of the second synchronous swing arm 20, and both ends of the second connecting shaft 59 extend out of the second synchronous swing arm 20 to be connected to the second bracket 300, and the second connecting shaft 59 can slide relative to the second bracket 300.

[0176] Therefore, the sliding end 21 of the second synchronous swing arm 20 is slidably connected to the second bracket 300 through the second connecting shaft 59, so that a reliable connection relationship can be formed between the second synchronous swing arm 20 and the second bracket 300 through the connecting action of the second connecting shaft 59, so that the second synchronous swing arm 20 can drive the second shell 1300 to rotate synchronously when rotating.

[0177] Based on the above description, in this embodiment, the number of components of the rotating mechanism 100 is small, the matching relationship and matching position are simple, and the components are easy to manufacture and assemble, which is conducive to mass production. In addition, the various parts of the rotating mechanism 100 are connected by hole-shaft matching. On the one hand, the structure is simple and occupies a small space, making it easier for the folding device 1000 and the electronic device 2000 to be thin and light. On the other hand, the processing tolerance of the parts can be small, the hole-shaft gap is easy to control, and the virtual position of the synchronization angle of the rotating mechanism 100 can be reduced to a minimum, so that when the rotating mechanism 100 acts on the first shell 1200 and the second shell 1300, the synchronization effect of the first shell 1200 and the second shell 1300 is excellent.

[0178] It is understandable that the connection between each part in the rotating mechanism 100 will produce gap virtual position due to the processing tolerance, and the synchronous angle virtual position is the rotation angle difference between the first synchronous swing arm 10 and the second synchronous swing arm 20 during the synchronous rotation process due to the gap virtual position. Specifically, under an ideal state, when the first synchronous swing arm 10 rotates any degree within the angle range of 0°-90° relative to the fixed structure 40, the second synchronous swing arm 20 can also synchronously rotate the corresponding degree relative to the fixed structure 40. However, due to the existence of part processing tolerances, the degree of rotation of the first synchronous swing arm 10 and the second synchronous swing arm 20 relative to the fixed structure 40 will have a certain difference. For example, the first synchronous swing arm 10 rotates 10° relative to the fixed structure 40, and the second synchronous swing arm 20 rotates 9° relative to the fixed structure 40, and there is a 1° rotation angle difference between the two. The various parts in the rotating mechanism 100 are arranged to be hole-shaft matched. Since the processing accuracy of the hole-shaft match is high and the gap is easy to control, the rotation angle difference between the first synchronous swing arm 10 and the second synchronous swing arm 20 can be reduced to a minimum, so that the synchronization effect of the first synchronous swing arm 10 and the second synchronous swing arm 20 is excellent.

[0179] Please refer to Fig.14 and Fig.15 In this embodiment, when the rotating end 12 of the first synchronous swing arm 10 and the rotating end 22 of the second synchronous swing arm 20 are moving away from each other, and the sliding end 11 of the first synchronous swing arm 10 and the sliding end 21 of the second synchronous swing arm 20 are approaching each other, the first housing 1200 and the second housing 1300 are relatively folded. When the rotating end 12 of the first synchronous swing arm 10 and the rotating end 22 of the second synchronous swing arm 20 are approaching each other, and the sliding end 11 of the first synchronous swing arm 10 and the sliding end 21 of the second synchronous swing arm 20 are moving away from each other, the first housing 1200 and the second housing 1300 are relatively unfolded.

[0180] Therefore, during the unfolding and folding process of the folding device 1000, the rotation movement of the first synchronous swing arm 10 relative to the fixed structure 40 is symmetrical with the rotation movement of the second synchronous swing arm 20 relative to the fixed structure 40, so that the rotation movement of the first shell 1200 and the second shell 1300 relative to the support frame 400 remains synchronized, that is, they move closer to or away from each other synchronously. Therefore, the rotation movement of the first shell 1200 and the second shell 1300 relative to the support frame 400 has good synchronization, which improves the mechanical operation experience of the folding device 1000 and the electronic device 2000.

[0181] Second embodiment:

[0182] See also Figure 8 In the second embodiment of the present application, the same contents as those in the above-mentioned first embodiment will be omitted, and the contents different from those in the first embodiment will be described in detail below.

[0183] It should be noted that Figure 8 The purpose is only to schematically describe the connection relationship of the various parts in the rotating mechanism 100 in this embodiment, and it is not to specifically limit the connection position and specific structure of each part.

[0184] Please continue reading Figure 8 The fixed structure 40 is provided with a slide groove 44, and the extension direction of the slide groove 44 is perpendicular to the extension direction of the fixed structure 40. For example, the folding device 1000 is flattened and placed on a desktop, the extension direction of the fixed structure 40 is parallel to the desktop, and the extension direction of the slide groove 44 is perpendicular to the desktop.

[0185] In this embodiment, the connection structure 30 includes a first connecting rod 31 and a second connecting rod 32 connected to each other. The first connecting rod 31 is connected to the first synchronous swing arm 10, and the second connecting rod 32 is connected to the second synchronous swing arm 20, thereby forming a transmission chain in the rotating mechanism 100 that can transmit motion and realize the synchronous rotation function of the two shells (first shell 1200 and second shell 1300) of the electronic device 2000 - "first synchronous swing arm 10-first connecting rod 31-second connecting rod 32-second synchronous swing arm 20".

[0186] Specifically, the first connecting rod 31 includes a transmission end 311 and a sliding end 312, and the second connecting rod 32 includes a transmission end 321 and a sliding end 322. The transmission end 311 of the first connecting rod 31 is connected to the rotating end 12 of the first synchronous swing arm 10, and the two can rotate relative to each other. The transmission end 321 of the second connecting rod 32 is connected to the rotating end 22 of the second synchronous swing arm 20, and the two can rotate relative to each other. The sliding end 312 of the first connecting rod 31 is connected to the sliding end 322 of the second connecting rod 32, and both are installed in the slide groove 44, and can rotate relative to each other when moving synchronously relative to the slide groove 44.

[0187] In other words, the sliding end 312 of the first connecting rod 31 can move relative to the sliding groove 44, and the sliding end 322 of the second connecting rod 32 can also move relative to the sliding groove 44 synchronously with the sliding end 312 of the first connecting rod 31. When the sliding end 312 of the first connecting rod 31 and the sliding end 322 of the second connecting rod 32 move synchronously relative to the sliding groove 44, the sliding end 312 of the first connecting rod 31 and the sliding end 322 of the second connecting rod 32 can rotate relative to each other.

[0188] In this way, the relative rotation of the first link 31 and the second link 32 can be achieved, and then through the driving action of the first link 31 and the second link 32, the first synchronous swing arm 10 and the second synchronous swing arm 20 are rotated towards each other and approached to each other, so that the first shell 1200 and the second shell 1300 are relatively folded, or, through the driving action of the first link 31 and the second link 32, the first synchronous swing arm 10 and the second synchronous swing arm 20 are rotated back to back and away from each other, so that the first shell 1200 and the second shell 1300 are relatively unfolded.

[0189] It is understandable that, by providing the slide slot 44, the synchronous movement of the first link 31 and the second link 32 relative to the slide slot 44 can be converted into a relative rotation (relative folding or relative unfolding) between the first link 31 and the second link 32, thereby achieving the synchronous rotation (mutual approach or mutual distance) of the first synchronous swing arm 10 and the second synchronous swing arm 20. In addition, because the first link 31 can be linked to the first housing 1200 through the first synchronous swing arm 10, and the second link 32 can be linked to the second housing 1300 through the second synchronous swing arm 20, the rotating mechanism 100 as a whole has better mechanism tensile strength and mechanism anti-extrusion strength.

[0190] Please refer to Fig.16 and Fig.17 , exemplarily, with the desktop as a reference surface, the folding device 1000 is flattened and placed on the desktop, the bottom 441 of the slide slot 44 is the end closer to the desktop relative to the top 442 of the slide slot 44, and the top 442 of the slide slot 44 is the end farther from the desktop relative to the bottom 441 of the slide slot 44. When the first synchronous swing arm 10 rotates counterclockwise around the first shaft 51 (first axis), it drives the first connecting rod 31 to move upward relative to the bottom 441 of the slide slot 44, and the angle between the first synchronous swing arm 10 and the first connecting rod 31 gradually decreases due to the relative rotation of the two. At this time, the second connecting rod 32 is driven by the first connecting rod 31 to move upward synchronously relative to the bottom 441 of the slide slot 44, and the angle between the second connecting rod 32 and the first connecting rod 31 gradually increases due to the relative rotation of the two. The second synchronous swing arm 20 is driven by the second connecting rod 32 to rotate clockwise around the second shaft 52 (second axis), and the angle between the second synchronous swing arm 20 and the second connecting rod 32 gradually decreases due to the relative rotation between the two, thereby achieving the mutual approach of the first synchronous swing arm 10 and the second synchronous swing arm 20, and further achieving the relative folding of the first shell 1200 and the second shell 1300.

[0191] Alternatively, the first synchronous swing arm 10 rotates clockwise around the first shaft body 51 (the first axis line), driving the second connecting rod 32 to move downward relative to the top 442 of the sliding groove 44. The included angle between the first synchronous swing arm 10 and the second connecting rod 32 gradually increases due to the relative rotation movement between the two. At this time, the second connecting rod 32 is driven by the first connecting rod 31 to move upward synchronously relative to the top 442 of the sliding groove 44, and the included angle between the second connecting rod 32 and the first connecting rod 31 gradually decreases due to the relative rotation movement between the two. The second synchronous swing arm 20 is driven by the second connecting rod 32 to rotate clockwise around the second shaft body 52 (the second axis line), and the included angle between the second synchronous swing arm 20 and the second connecting rod 32 gradually increases due to the relative rotation movement between the two, thereby realizing the mutual separation of the first synchronous swing arm 10 and the second synchronous swing arm 20, and further realizing the relative expansion of the first housing 1200 and the second housing 1300.

[0192] Please refer to again Figure 8 , the first connecting rod 31 and the second connecting rod 32 can be symmetrically arranged with respect to the sliding groove 44, and the first synchronous swing arm 10 and the second synchronous swing arm 20 can also be symmetrically arranged with respect to the sliding groove 44. Thus, the first synchronous swing arm 10, the first connecting rod 31, the second connecting rod 32, and the second synchronous swing arm 20 as a whole present an inverted "W" shape. The symmetrically arranged structural form can ensure the symmetry and consistency of the synchronous movement of the first synchronous swing arm 10 and the second synchronous swing arm 20, and the movement form is better. In addition, the structure of the first connecting rod 31 can be the same as that of the second connecting rod 32, and the structure of the first synchronous swing arm 10 can be the same as that of the second synchronous swing arm 20, so as to reduce the design difficulty of the rotating mechanism 100.

[0193] In this embodiment, in addition to the first shaft body 51, the second shaft body 52, the third shaft body 53, and the fourth shaft body 54, the rotating mechanism 100 further includes a fifth shaft body 55. By providing a plurality of shaft bodies, the connection between the various parts within the rotating mechanism 100 can be realized. Compared with the traditional rotating structure 100 in which the various components need to form a connection relationship through complex components such as gear meshing, in this embodiment, a reliable connection can be realized only by the cooperation between the shaft bodies and the parts. The structure is simple, the processing difficulty is low, and it is easy to achieve a very high processing accuracy.

[0194] The following will detail the specific implementation forms of the connection relationships of the various components of the rotating mechanism 100 in this embodiment. It should be noted that in this embodiment, the connection relationship of the sliding end 11 of the first synchronous swing arm 10, the connection relationship between the first housing 1200, and the connection relationship of the sliding end 21 of the second synchronous swing arm 20 and the second housing 1300 can refer to the first embodiment and will not be elaborated here.

[0195] Please refer to Figure 8, the first shaft 51 is inserted into the first synchronous swing arm 10 and the fixed structure 40. At this time, the first shaft 51 passes through the first synchronous swing arm 10, and both ends of the first shaft 51 extend out of the first synchronous swing arm 10 and are connected to the fixed structure 40. As a result, the first shaft 51 can be connected to both the first synchronous swing arm 10 and the fixed structure 40, and because the first synchronous swing arm 10 can rotate relative to the fixed structure 40, a reliable connection relationship can be formed between the first synchronous swing arm 10 and the fixed structure 40 through the connection of the first shaft 51. That is, the first synchronous swing arm 10 can be rotatably connected to the fixed structure 40 through the first shaft 51.

[0196] Exemplarily, the first shaft 51 may be inserted into the rotating end 12 of the first synchronous swing arm 10 , or may be inserted into the middle part between the sliding end 11 and the rotating end of the first synchronous swing arm 10 , and this embodiment does not impose strict restrictions on this.

[0197] In this embodiment, since both ends of the first shaft body 51 are connected to the fixed structure 40, the position of the first shaft body 51 is fixed and will not change. Based on this, the position of the first axis is also fixed and will not change. Since the first shaft body 51 is connected to the first synchronous swing arm 10, and the first synchronous swing arm 10 can rotate relative to the fixed structure 40, the first synchronous swing arm 10 can rotate relative to the first shaft body 51.

[0198] It can be understood that the first axis can be colinear with the rotation center of the first synchronous swing arm 10. Thus, the first synchronous swing arm 10 can rotate around the first axis. Exemplarily, during the relative folding of the first housing 1200 and the second housing 1300, the first synchronous swing arm 10 can rotate counterclockwise around the first axis. And during the relative unfolding of the first housing 1200 and the second housing 1300, the first synchronous swing arm 10 can rotate clockwise around the first axis.

[0199] The third shaft 53 is inserted into the rotating end 12 of the first synchronous swing arm 10 and the transmission end 311 of the first connecting rod 31. At this time, the third shaft 53 is not only connected to the rotating end 12 of the first synchronous swing arm 10, but also connected to the transmission end 311 of the first connecting rod 31. Therefore, the third shaft 53 can be connected to both the rotating end 12 of the first synchronous swing arm 10 and the transmission end 311 of the first connecting rod 31, and because the transmission end 311 of the first connecting rod 31 and the rotating end 12 of the first synchronous swing arm 10 can rotate relative to each other, a reliable connection relationship can be formed between the first synchronous swing arm 10 and the first connecting rod 31 through the connection of the third shaft 53. That is, the first connecting rod 31 can be rotatably connected to the first synchronous swing arm 10 through the third shaft 53.

[0200] Exemplarily, the specific connection form of the third shaft 53 and the rotating end 12 of the first synchronous swing arm 10 and the transmission end 311 of the first connecting rod 31 can refer to the connection form between the rotating end 12 of the first synchronous swing arm 10 and the connecting structure 30 shown in the first embodiment 10. It is only necessary to satisfy the connection relationship and rotation relationship between the third shaft 53 and the rotating end 12 of the first synchronous swing arm 10 and the transmission end 311 of the first connecting rod 31. This embodiment does not strictly limit the specific connection form between the third shaft 53 and the rotating end 12 of the first synchronous swing arm 10 and the transmission end 311 of the first connecting rod 31.

[0201] The fifth shaft 55 is connected to the slide groove 44 and can slide back and forth in the slide groove 44. The reciprocating sliding can be understood as the fifth shaft 55 can slide from the bottom 441 (top 442) of the slide groove 44 to the top 442 (bottom 441) of the slide groove 44, and then slide from the top 442 (bottom 441) of the slide groove 44 to the bottom 441 (top 442) of the slide groove 44, and repeat this process. That is, the fifth shaft 55 is slidably connected to the slide groove 44.

[0202] In a possible implementation, when the fifth shaft body 55 is located at the top 442 of the slide slot 44, the angle between the first connecting rod 31 and the second connecting rod 32 is the largest. That is, the first connecting rod 31 and the second connecting rod 32 are relatively unfolded, and the first synchronous swing arm 10 and the second synchronous swing arm 20 are close to each other, so that the first housing 1200 and the second housing 1300 are relatively folded. When the fifth shaft body 55 is located at the bottom 441 of the slide slot 44, the angle between the first connecting rod 31 and the second connecting rod 32 is the smallest. That is, the first connecting rod 31 and the second connecting rod 32 are relatively folded, and the first synchronous swing arm 10 and the second synchronous swing arm 20 are away from each other, so that the first housing 1200 and the second housing 1300 are relatively unfolded.

[0203] The fifth shaft body 55 is also inserted into the sliding end 312 of the first connecting rod 31 and the sliding end 322 of the second connecting rod 32. At this time, the fifth shaft body 55 is not only connected to the sliding end 312 of the first connecting rod 31, but also connected to the sliding end 322 of the second connecting rod 32. As a result, the fifth shaft body 55 can be connected to both the sliding end 312 of the first connecting rod 31 and the sliding end 322 of the second connecting rod 32. Since the sliding end 312 of the first connecting rod 31 and the sliding end 322 of the second connecting rod 32 can rotate relative to each other, a reliable connection relationship can be formed between the first connecting rod 31 and the second connecting rod 32 through the connection of the fifth shaft body 55. That is, the sliding end 312 of the first connecting rod 31 can be rotatably connected to the sliding end 322 of the second connecting rod 32 through the fifth shaft body 55.

[0204] In addition, the fifth shaft body 55 can also guide the synchronous movement of the first connecting rod 31 and the second connecting rod 32 by sliding in the slide groove 44, so that the synchronous movement of the first connecting rod 31 and the second connecting rod 32 is converted into a relative rotation therebetween. In other words, through the cooperation between the slide groove 44 and the fifth shaft body 55, the sliding end 312 of the first connecting rod 31 and the sliding end 322 of the second connecting rod 32 can be guided in the sliding direction of the slide groove 44, so that the relative movement between the sliding end 312 of the first connecting rod 31 and the sliding end 322 of the second connecting rod 32 is easier to achieve and the control accuracy is higher.

[0205] The fourth shaft 54 ​​is inserted into the rotating end 22 of the second synchronous swing arm 20 and the transmission end 321 of the second connecting rod 32. At this time, the fourth shaft 54 ​​is not only connected to the rotating end 22 of the second synchronous swing arm 20, but also connected to the transmission end 321 of the second connecting rod 32. Therefore, the fourth shaft 54 ​​can be connected to both the rotating end 22 of the second synchronous swing arm 20 and the transmission end 321 of the second connecting rod 32, and because the rotating end 22 of the second synchronous swing arm 20 and the transmission end 321 of the second connecting rod 32 can rotate relative to each other, a reliable connection relationship can be formed between the second synchronous swing arm 20 and the second connecting rod 32 through the connecting action of the fourth shaft 54. That is, the second synchronous swing arm 20 is rotationally connected to the second connecting rod 32 through the fourth shaft 54.

[0206] For example, the specific connection form between the fourth shaft 54 ​​and the rotating end 22 of the second synchronous swing arm 20 and the transmission end 321 of the second connecting rod 32 can be referred to in the first embodiment. Fig.10 The connection form between the rotating end 22 of the second synchronous swing arm 20 and the connecting structure 30 shown in the figure only needs to satisfy the connection relationship and rotation relationship between the fourth shaft body 54 and the rotating end 22 of the second synchronous swing arm 20 and the transmission end 321 of the second connecting rod 32. This embodiment does not strictly limit the specific connection form between the fourth shaft body 54 and the rotating end 22 of the second synchronous swing arm 20 and the transmission end 321 of the second connecting rod 32.

[0207] The second shaft 52 is inserted into the second synchronous swing arm 20 and the fixed structure 40. At this time, the second shaft 52 passes through the second synchronous swing arm 20, and both ends of the second shaft 52 extend out of the second synchronous swing arm 20 and are connected to the fixed structure 40. As a result, the second shaft 52 can be connected to both the second synchronous swing arm 20 and the fixed structure 40, and because the second synchronous swing arm 20 can rotate relative to the fixed structure 40, a reliable connection relationship can be formed between the second synchronous swing arm 20 and the fixed structure 40 through the connection of the second shaft 52. That is, the second synchronous swing arm is rotatably connected to the fixed structure 40 through the second shaft 52.

[0208] Exemplarily, the second shaft 52 may be inserted into the rotating end 22 of the second synchronous swing arm 20 , or may be inserted into the middle part between the sliding end 21 and the rotating end of the second synchronous swing arm 20 , and this embodiment does not impose strict restrictions on this.

[0209] In this embodiment, since both ends of the second shaft body 52 are connected to the fixed structure 40, the position of the second shaft body 52 is fixed and will not change. Based on this, the position of the second axis is also fixed and will not change. Since the second shaft body 52 is connected to the second synchronous swing arm 20, and the second synchronous swing arm 20 can rotate relative to the fixed structure 40, the second synchronous swing arm 20 can rotate relative to the second shaft body 52.

[0210] It is understandable that the second axis may be colinear with the rotation center of the second synchronous swing arm 20. Thus, the second synchronous swing arm 20 can rotate around the second axis. Exemplarily, during the relative folding of the first housing 1200 and the second housing 1300, the second synchronous swing arm 20 may rotate clockwise around the second axis. While during the relative unfolding of the first housing 1200 and the second housing 1300, the second synchronous swing arm 20 may rotate counterclockwise around the second axis.

[0211] It should be understood that in this embodiment, the rotation center of the second synchronous swing arm 20 (collinear with the second axis) and the rotation center of the first synchronous swing arm 10 (collinear with the first axis) are symmetrically arranged. In other words, the first axis and the second axis are symmetrically arranged.

[0212] It should be noted that, in this embodiment, the fixed structure 40 may include a plurality of separate frames, or may be an integral frame formed by assembling a plurality of separate frames. The specific structural form of the fixed structure 40 may be designed according to actual use requirements, and only needs to be able to fix the positions of the first shaft 51 and the second shaft 52. This embodiment does not strictly limit this. In addition, in this embodiment, the plurality of shafts of the rotating mechanism 100 and the structures connected to them are generally hole-shaft matched, and the specific implementation form is generally similar to that in the first embodiment, and will not be described in detail here.

[0213] Based on the above description, in this embodiment, the rotating mechanism 100 adopts a multi-stage connecting rod transmission method to achieve the synchronous rotation effect of the two shells of the folding device 1000. The rotating structure 100 has a small number of components, a simple matching relationship and a simple matching position, and the components are easy to manufacture and assemble, which is conducive to mass production. In addition, the various parts of the rotating mechanism 100 are generally connected by hole-shaft matching. On the one hand, the structure is simple and occupies a small space, making it easier to achieve lightness and thinness of the folding device 1000 and the electronic device 2000. On the other hand, the processing tolerance of the parts can be small, the hole-shaft gap is easy to control, and the virtual position of the synchronous angle of the rotating mechanism 100 can be reduced to a minimum, so that when the rotating mechanism 100 acts on the first shell 1200 and the second shell 1300, the synchronization effect of the first shell 1200 and the second shell 1300 is excellent.

[0214] In this embodiment, since the rotation center of the first synchronous swing arm 10 (collinear with the first axis) and the rotation center of the second synchronous swing arm 20 (collinear with the second axis) are symmetrically arranged, the rotating end 12 of the first synchronous swing arm 10 and the rotating end 22 of the second synchronous swing arm 20 are far away from each other, and the sliding end 11 of the first synchronous swing arm 10 and the sliding end 21 of the second synchronous swing arm 20 are close to each other, and the first connecting rod 31 and the second connecting rod 32 move up relative to the bottom 441 of the slide slot 44 and the angle between the two gradually increases, the first housing 1200 and the second housing 1300 are relatively folded. In the process that the rotating end 12 of the first synchronous swing arm 10 and the rotating end 22 of the second synchronous swing arm 20 are close to each other, and the sliding end 11 of the first synchronous swing arm 10 and the sliding end 21 of the second synchronous swing arm 20 are far away from each other, and the first connecting rod 31 and the second connecting rod 32 move down relative to the top 442 of the slide slot 44 and the angle between the two gradually decreases, the first housing 1200 and the second housing 1300 are relatively unfolded.

[0215] Therefore, during the unfolding and folding process of the folding device 1000, the rotation movement of the first synchronous swing arm 10 relative to the slide groove 44 is symmetrical with the rotation movement of the second synchronous swing arm 20 relative to the slide groove 44, and the rotation movement of the first connecting rod 31 relative to the slide groove 44 is symmetrical with the rotation movement of the second connecting rod 32 relative to the slide groove 44, so that the rotation movement of the first shell 1200 and the second shell 1300 relative to the support frame 400 remains synchronized, that is, they approach or move away from each other synchronously. Therefore, the rotation movement of the first shell 1200 and the second shell 1300 relative to the support frame 400 has good synchronization, which improves the mechanical operation experience of the folding device 1000 and the electronic device 2000.

[0216] Third embodiment:

[0217] See also Fig. 9In the third embodiment of the present application, the same contents as those in the first embodiment will not be repeated, and the contents different from those in the first embodiment will be described in detail below.

[0218] It should be noted that Fig. 9 The purpose is only to schematically describe the connection relationship of the various parts in the rotating mechanism 100 in this embodiment, and it is not to specifically limit the connection position and specific structure of each part.

[0219] In this embodiment, the connection structure 30 includes a first connecting rod 31, a second connecting rod 32 and a third connecting rod 33 connected in sequence. The first connecting rod 31 is connected to the first synchronous swing arm 10, and the third connecting rod 33 is connected to the second synchronous swing arm 20, thereby forming a transmission chain in the rotating mechanism 100 that can transmit motion and realize the synchronous rotation function of the two shells (first shell 1200 and second shell 1300) of the electronic device 2000 - "first synchronous swing arm 10-first connecting rod 31-second connecting rod 32-third connecting rod 33-second synchronous swing arm 20".

[0220] Please continue reading Fig. 9 The second connecting rod 32 is connected to the first connecting rod 31, the third connecting rod 33 and the fixed structure 40, and the second connecting rod 32 can rotate relative to the fixed structure 40, so the second connecting rod 32 has a rotation center, which is a center line around which the second connecting rod 32 can make a circular motion.

[0221] Specifically, the two ends of the second connecting rod 32 are connected to one end of the first connecting rod 31 and one end of the third connecting rod 33, respectively, and the second connecting rod 32 and the first connecting rod 31 and the second connecting rod 32 and the third connecting rod 33 can rotate relative to each other. The end of the first connecting rod 31 away from the second connecting rod 32 is connected to the rotating end 12 of the first synchronous swing arm 10, and the two can rotate relative to each other. The end of the third connecting rod 33 away from the second connecting rod 32 is connected to the rotating end 22 of the second synchronous swing arm 20, and the two can rotate relative to each other.

[0222] In this embodiment, in addition to the first shaft 51, the second shaft 52, the third shaft 53, and the fourth shaft 54, the rotating mechanism 100 also includes a fifth shaft 55, a sixth shaft 56, and a seventh shaft 57. By providing multiple shafts, it is possible to achieve connection between various parts in the rotating mechanism 100. Compared with the traditional rotating structure 100, in which various parts need to be connected through complex components such as gear meshing, this embodiment can achieve reliable connection only by relying on the cooperation between various shafts and various parts, has a simple structure, low processing difficulty, and is easy to achieve high processing accuracy.

[0223] The specific implementation of the connection relationship between the components of the rotating mechanism 100 in this embodiment will be described in detail below.

[0224] It should be noted that, in this embodiment, the connection relationship between the sliding end 11 of the first synchronous swing arm 10 and the first shell 1200 and the connection relationship between the sliding end 21 of the second synchronous swing arm 20 and the second shell 1300 can refer to the first embodiment and will not be repeated here.

[0225] The first shaft 51 is inserted into the first synchronous swing arm 10 and the fixed structure 40. At this time, the first shaft 51 passes through the first synchronous swing arm 10, and both ends of the first shaft 51 extend out of the first synchronous swing arm 10 and are connected to the fixed structure 40. As a result, the first shaft 51 can be connected to both the first synchronous swing arm 10 and the fixed structure 40, and because the first synchronous swing arm 10 can rotate relative to the fixed structure 40, a reliable connection relationship can be formed between the first synchronous swing arm 10 and the fixed structure 40 through the connection of the first shaft 51. That is, the first synchronous swing arm 10 is rotatably connected to the fixed structure 40 through the first shaft 51.

[0226] Exemplarily, the first shaft 51 may be inserted into the rotating end 12 of the first synchronous swing arm 10 , or may be inserted into the middle part between the sliding end 11 and the rotating end of the first synchronous swing arm 10 , and this embodiment does not impose strict restrictions on this.

[0227] In this embodiment, since both ends of the first shaft body 51 are connected to the fixed structure 40, the position of the first shaft body 51 is fixed and will not change. Based on this, the position of the first axis is also fixed and will not change. Since the first shaft body 51 is connected to the first synchronous swing arm 10, and the first synchronous swing arm 10 can rotate relative to the fixed structure 40, the first synchronous swing arm 10 can rotate relative to the first shaft body 51.

[0228] It can be understood that the first axis can be colinear with the rotation center of the first synchronous swing arm 10. Thus, the first synchronous swing arm 10 can rotate around the first axis. Exemplarily, during the relative folding of the first housing 1200 and the second housing 1300, the first synchronous swing arm 10 can rotate clockwise around the first axis. And during the relative unfolding of the first housing 1200 and the second housing 1300, the first synchronous swing arm 10 can rotate counterclockwise around the first axis.

[0229] The third shaft 53 is inserted into the rotating end 12 of the first synchronous swing arm 10 and the end of the first connecting rod 31 away from the second connecting rod 32. At this time, the third shaft 53 is not only connected to the rotating end 12 of the first synchronous swing arm 10, but also connected to the end of the first connecting rod 31 away from the second connecting rod 32. Therefore, the third shaft 53 can be connected to both the rotating end 12 of the first synchronous swing arm 10 and the end of the first connecting rod 31 away from the second connecting rod 32. Since the rotating end 12 of the first synchronous swing arm 10 and the end of the first connecting rod 31 away from the second connecting rod 32 can rotate relative to each other, a reliable connection relationship can be formed between the first synchronous swing arm 10 and the first connecting rod 31 through the connection of the third shaft 53. That is, the end of the first connecting rod 31 away from the second connecting rod 32 is rotationally connected to the rotating end 12 of the first synchronous swing arm 10 through the third shaft 53.

[0230] For example, the specific connection form between the third shaft 53 and the rotating end 12 of the first synchronous swing arm 10 and the end of the first connecting rod 31 away from the second connecting rod 32 can be referred to in the first embodiment. Fig.10 The connection form between the rotating end 12 of the first synchronous swing arm 10 and the connecting structure 30 shown in the figure only needs to satisfy the connection relationship between the third shaft 53 and the rotating end 12 of the first synchronous swing arm 10 and the end of the first connecting rod 31 away from the second connecting rod 32. The present embodiment does not strictly limit the specific connection form between the third shaft 53 and the rotating end 12 of the first synchronous swing arm 10 and the end of the first connecting rod 31 away from the second connecting rod 32.

[0231] The fifth shaft 55 is inserted into the end of the first connecting rod 31 away from the first synchronous swing arm 10 and the end of the second connecting rod 32 away from the third connecting rod 33. At this time, the fifth shaft 55 is not only connected to the end of the first connecting rod 31 away from the first synchronous swing arm 10, but also connected to the end of the second connecting rod 32 away from the third connecting rod 33. Therefore, the fifth shaft 55 can be connected to both the end of the first connecting rod 31 away from the first synchronous swing arm 10 and the end of the second connecting rod 32 away from the third connecting rod 33. Since the end of the first connecting rod 31 away from the first synchronous swing arm 10 and the end of the second connecting rod 32 away from the third connecting rod 33 can rotate relative to each other, a reliable connection relationship can be formed between the first connecting rod 31 and the second connecting rod 32 through the connection of the fifth shaft 55. That is, the end of the first connecting rod 31 away from the first synchronous swing arm 10 is rotatably connected to the end of the second connecting rod 32 away from the third connecting rod 33 through the fifth shaft 55.

[0232] The sixth shaft 56 is inserted into the second connecting rod 32 and the fixed structure 40. At this time, the sixth shaft 56 passes through the second connecting rod 32, and both ends of the sixth shaft 56 extend out of the second connecting rod 32 and are connected to the fixed structure 40. Therefore, the sixth shaft 56 can be connected to both the second connecting rod 32 and the fixed structure 40, and because the second connecting rod 32 can rotate relative to the fixed structure 40, a reliable connection relationship can be formed between the second connecting rod 32 and the fixed structure 40 through the connection of the sixth shaft 56. That is, the second connecting rod 32 is rotatably connected to the fixed structure 40 through the sixth shaft 56.

[0233] Exemplarily, the sixth shaft body 56 may be inserted in the middle portion between the two ends of the second connecting rod 32 , and this embodiment does not impose a strict limitation on this.

[0234] In this embodiment, the center line of the sixth shaft body 56 is defined as the third axis. Since both ends of the sixth shaft body 56 are connected to the fixed structure 40, the position of the sixth shaft body 56 is fixed and will not change. Based on this, the position of the third axis is also fixed and will not change. Since the sixth shaft body 56 is connected to the second connecting rod 32, and the second connecting rod 32 can rotate relative to the fixed structure 40, the second connecting rod 32 can rotate relative to the sixth shaft body 56. That is, the second connecting rod 32 can rotate clockwise or counterclockwise around the sixth shaft body 56.

[0235] It is understandable that the third axis may be colinear with the rotation center of the second connecting rod 32. Thus, the second connecting rod 32 can rotate around the third axis. Exemplarily, during the relative folding of the first housing 1200 and the second housing 1300, the second connecting rod 32 may rotate counterclockwise around the third axis. While during the relative unfolding of the first housing 1200 and the second housing 1300, the second connecting rod 32 may rotate clockwise around the third axis.

[0236] The seventh shaft 57 is inserted into the end of the second link 32 away from the first link 31 and the end of the third link 33 away from the second synchronous swing arm 20. At this time, the seventh shaft 57 is not only connected to the end of the second link 32 away from the first link 31, but also connected to the end of the third link 33 away from the second synchronous swing arm 20. Therefore, the seventh shaft 57 can be connected to both the end of the second link 32 away from the first link 31 and the end of the third link 33 away from the second synchronous swing arm 20. Since the end of the second link 32 away from the first link 31 and the end of the third link 33 away from the second synchronous swing arm 20 can rotate relative to each other, a reliable connection relationship can be formed between the second link 32 and the third link 33 through the connection of the seventh shaft 57. That is, the end of the second link 32 away from the first link 31 is rotatably connected to the end of the third link 33 away from the second synchronous swing arm 20 through the seventh shaft 57.

[0237] The fourth shaft 54 ​​is inserted into the end of the third link 33 away from the second link 32 and the rotating end 22 of the second synchronous swing arm 20. At this time, the fourth shaft 54 ​​is not only connected to the end of the third link 33 away from the second link 32, but also connected to the rotating end 22 of the second synchronous swing arm 20. Therefore, the fourth shaft 54 ​​can be connected to both the end of the third link 33 away from the second link 32 and the rotating end 22 of the second synchronous swing arm 20, and because the end of the third link 33 away from the second link 32 and the rotating end 22 of the second synchronous swing arm 20 can rotate relative to each other, a reliable connection relationship can be formed between the third link 33 and the second synchronous swing arm 20 through the connecting action of the fourth shaft 54. That is, the end of the third link 33 away from the second link 32 is rotatably connected to the rotating end 22 of the second synchronous swing arm 20 through the fourth shaft 54.

[0238] For example, the specific connection form between the fourth shaft 54 ​​and the end of the third connecting rod 33 away from the second connecting rod 32 and the rotating end 22 of the second synchronous swing arm 20 can be referred to the first embodiment. Fig.10 The connection form between the rotating end 12 of the first synchronous swing arm 10 and the connecting structure 30 shown only needs to satisfy the connection relationship between the fourth shaft 54 ​​and the end of the third connecting rod 33 away from the second connecting rod 32 and the rotating end 22 of the second synchronous swing arm 20. This embodiment does not strictly limit the specific connection form between the fourth shaft 54 ​​and the end of the third connecting rod 33 away from the second connecting rod 32 and the rotating end 22 of the second synchronous swing arm 20.

[0239] The second shaft 52 is inserted into the second synchronous swing arm 20 and the fixed structure 40. At this time, the second shaft 52 passes through the second synchronous swing arm 20, and both ends of the second shaft 52 extend out of the second synchronous swing arm 20 and are connected to the fixed structure 40. As a result, the second shaft 52 can be connected to both the second synchronous swing arm 20 and the fixed structure 40, and because the second synchronous swing arm 20 can rotate relative to the fixed structure 40, a reliable connection relationship can be formed between the second synchronous swing arm 20 and the fixed structure 40 through the connection of the second shaft 52. That is, the second synchronous swing arm 20 is rotatably connected to the fixed structure 40 through the second shaft 52.

[0240] Exemplarily, the second shaft 52 may be inserted into the rotating end 22 of the second synchronous swing arm 20 , or may be inserted into the middle part between the sliding end 21 and the rotating end of the second synchronous swing arm 20 , and this embodiment does not impose strict restrictions on this.

[0241] In this embodiment, since both ends of the second shaft body 52 are connected to the fixed structure 40, the position of the second shaft body 52 is fixed and will not change. Based on this, the position of the second axis is also fixed and will not change. Since the second shaft body 52 is connected to the second synchronous swing arm 20, and the second synchronous swing arm 20 can rotate relative to the fixed structure 40, the second synchronous swing arm 20 can rotate relative to the second shaft body 52. ​​In other words, the second synchronous swing arm 20 can rotate clockwise or counterclockwise around the second shaft body 52.

[0242] It is understandable that the second axis can be colinear with the rotation center of the second synchronous swing arm 20. Thus, the second synchronous swing arm 20 can rotate around the second axis. Exemplarily, during the relative folding of the first housing 1200 and the second housing 1300, the first synchronous swing arm 10 can rotate counterclockwise around the second axis. While during the relative unfolding of the first housing 1200 and the second housing 1300, the first synchronous swing arm 10 can rotate clockwise around the second axis.

[0243] It should be understood that in this embodiment, the rotation center of the second synchronous swing arm 20 (collinear with the second axis) and the rotation center of the first synchronous swing arm 10 (collinear with the first axis) are symmetrically arranged. That is, the first axis and the second axis are symmetrically arranged.

[0244] Please also read Fig.18 and Fig.19 For example, the first synchronous swing arm 10 rotates clockwise around the first shaft 51 (first axis), driving the first connecting rod 31 to move toward the first synchronous swing arm 10, and the angle between the first synchronous swing arm 10 and the first connecting rod 31 gradually decreases due to the relative rotation of the two. At this time, the second connecting rod 32 is driven by the first connecting rod 31 to rotate counterclockwise around the sixth shaft 56 (third axis), and the angle between the second connecting rod 32 and the first connecting rod 31 gradually increases due to the relative rotation of the two. The rotation of the second connecting rod 32 pushes the third connecting rod 33 to move toward the second synchronous swing arm 20, and the angle between the second connecting rod 32 and the third connecting rod 33 gradually increases due to the relative rotation of the two. The second synchronous swing arm 20 is driven by the third connecting rod 33 to rotate counterclockwise around the second shaft 52 (second axis), and the angle between the second synchronous swing arm 20 and the third connecting rod 33 gradually decreases due to the connected relative rotation action, thereby achieving the mutual approach of the first synchronous swing arm 10 and the second synchronous swing arm 20, and further achieving the relative folding of the first shell 1200 and the second shell 1300.

[0245] Alternatively, the first synchronous swing arm 10 rotates counterclockwise around the first shaft 51 (first axis), driving the first connecting rod 31 to move toward the second synchronous swing arm 20, and the angle between the first synchronous swing arm 10 and the first connecting rod 31 gradually increases due to the relative rotation of the two. At this time, the second connecting rod 32 is driven by the first connecting rod 31 to rotate clockwise around the sixth shaft 56 (third axis), and the angle between the second connecting rod 32 and the first connecting rod 31 gradually decreases due to the relative rotation of the two. The rotation of the second connecting rod 32 pulls the third connecting rod 33 to move toward the second synchronous swing arm 20, and the angle between the second connecting rod 32 and the third connecting rod 33 gradually decreases due to the relative rotation of the two. The second synchronous swing arm 20 is driven by the third connecting rod 33 to rotate clockwise around the sixth shaft 56 (third axis), and the angle between the second synchronous swing arm 20 and the third connecting rod 33 gradually increases due to the connected relative rotation action, thereby achieving the first synchronous swing arm 10 and the second synchronous swing arm 20 moving away from each other, and then achieving the relative expansion of the first shell 1200 and the second shell 1300.

[0246] It should be noted that in this embodiment, the fixed structure 40 may include a plurality of separate frames, or may be an integral frame formed by assembling a plurality of separate frames. The specific structural form of the fixed structure 40 may be designed according to actual use requirements, and only needs to be able to fix the positions of the first shaft 51, the fourth shaft 54, and the seventh shaft 57. This embodiment does not strictly limit this. In addition, in this embodiment, the plurality of shafts of the rotating mechanism 100 and the structures connected to them are generally hole-shaft matched, and the specific implementation form is generally similar to that in the first embodiment, and will not be described in detail here.

[0247] Based on the above description, in this embodiment, the rotating mechanism 100 adopts a multi-stage connection structure 30 transmission mode to achieve the rotation synchronization effect of the two shells of the folding device 1000. Compared with the traditional gear synchronization and other small single-body parts, the multi-stage connection structure 30 transmission mode provided in this embodiment has a relatively large part size, a relatively high overall structural strength, and strong reliability. The number of components of the rotating structure 100 is small, the matching relationship and matching position are simple, and the components are easy to make and assemble, which is conducive to mass production. In addition, the various parts of the rotating mechanism 100 are generally connected by hole-shaft matching. On the one hand, the structure is simple and the space occupied is small, making it easier for the folding device 1000 and the electronic device 2000 to be thin and light. On the other hand, the processing tolerance of the parts can be small, the hole-shaft gap is easy to control, and the synchronization angle virtual position of the rotating mechanism 100 can be reduced to a minimum, so that when the rotating mechanism 100 acts on the first shell 1200 and the second shell 1300, the synchronization effect of the first shell 1200 and the second shell 1300 is excellent.

[0248] In this embodiment, since the rotation center of the first synchronous swing arm 10 (collinear with the first axis) and the rotation center of the second synchronous swing arm 20 (collinear with the second axis) are symmetrically arranged, the rotating end 12 of the first synchronous swing arm 10 and the rotating end 22 of the second synchronous swing arm 20 are far away from each other, and the sliding end 11 of the first synchronous swing arm 10 and the sliding end 21 of the second synchronous swing arm 20 are close to each other, so that the first connecting rod 31, the second connecting rod 32 and the third connecting rod 33 are relatively unfolded, and the first housing 1200 and the second housing 1300 are relatively folded. In the process that the rotating end 12 of the first synchronous swing arm 10 and the rotating end 22 of the second synchronous swing arm 20 are close to each other, and the sliding end 11 of the first synchronous swing arm 10 and the sliding end 21 of the second synchronous swing arm 20 are far away from each other, so that the first connecting rod 31, the second connecting rod 32 and the third connecting rod 33 are relatively folded, the first housing 1200 and the second housing 1300 are relatively unfolded.

[0249] In other words, when the first housing 1200 and the second housing 1300 are relatively folded to a closed state, the first connecting rod 31, the second connecting rod 32 and the third connecting rod 33 are relatively unfolded; when the first housing 1200 and the second housing 1300 are relatively unfolded to a flattened state, the first connecting rod 31, the second connecting rod 32 and the third connecting rod 33 are relatively folded. It can be understood that the relative unfolding of the first connecting rod 31, the second connecting rod 32 and the third connecting rod 33 can be that the angle between any two adjacent connecting rods gradually increases, so that all the connecting rods present a shape approximately in the shape of a "one". The relative folding of the first connecting rod 31, the second connecting rod 32 and the third connecting rod 33 can be that the angle between any two adjacent connecting rods gradually decreases, so that all the connecting rods present a shape approximately in the shape of an "N".

[0250] Therefore, during the unfolding and folding process of the folding device 1000, the rotation movement of the first synchronous swing arm 10 is symmetrical with the rotation movement of the second synchronous swing arm 20, so that the rotation movement of the first shell 1200 and the second shell 1300 relative to the support frame 400 remains synchronized, that is, they move closer to or away from each other synchronously. Therefore, the rotation movement of the first shell 1200 and the second shell 1300 relative to the support frame 400 has good synchronization, which improves the mechanical operation experience of the folding device 1000 and the electronic device 2000.

[0251] Based on the above three specific embodiments, it should be understood that the structure of the rotating mechanism 100 provided in the embodiment of the present application, on the one hand, has a small number of motion transmission stages, which can make the rotational movement of the first synchronous swing arm 10 and the second synchronous swing arm 20 have good synchronization, and can also adjust the size of the single parts to adapt to the diversified application scenarios with different transmission distances (for example, the size of the first synchronous swing arm 10, the connecting structure 30 and the second synchronous swing arm 20 can be made relatively large in the application scenario with a long transmission distance), which is highly practical and has a wide range of applications. On the other hand, it can also make the folding and unfolding movements of the first synchronous swing arm 10 and the second synchronous swing arm 20 more symmetrical, thereby making the rotational movement of the first shell 1200 and the second shell 1300 synchronous and consistent, making it easier to realize the shell pulling movement in the process of the folding device 1000 changing from the flat state to the closed state, and the shell pushing movement in the process of the folding device 1000 changing from the closed state to the flat state, which is conducive to improving the user experience.

[0252] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A folding device, It is characterized in that The folding device comprises a first bracket, a second bracket and a rotating mechanism; The rotating mechanism comprises a fixed structure, a first synchronous swing arm, a second synchronous swing arm, a connecting structure, a first shaft body, a second shaft body, a third shaft body and a fourth shaft body; The first synchronous swing arm is connected to the first bracket, the first synchronous swing arm is rotatably connected to the fixed structure through the first shaft, and the axis of the first shaft is a fixed axis; The second synchronous swing arm is connected to the second bracket, the second synchronous swing arm is rotatably connected to the fixed structure through the second shaft, and the axis of the second shaft is a fixed axis; The connecting structure is rotatably connected to the first synchronous swing arm through the third shaft, and the connecting structure is rotatably connected to the second synchronous swing arm through the fourth shaft, the third shaft and the first shaft are spaced apart, the fourth shaft and the second shaft are spaced apart, the axis of the third shaft is a non-fixed axis, and the axis of the fourth shaft is a non-fixed axis; The first synchronous swing arm can rotate relative to the fixed structure, and drives the second synchronous swing arm to rotate relative to the fixed structure through the connecting structure, so that the first bracket and the second bracket are relatively folded or relatively unfolded.

2. The folding device according to claim 1, It is characterized in that The center line of the first shaft body is a first axis, the center line of the second shaft body is a second axis, and the first axis and the second axis are arranged asymmetrically.

3. The folding device according to claim 2, It is characterized in that The rotating mechanism further includes a first connecting shaft and a second connecting shaft; The first synchronous swing arm comprises a sliding end and a rotating end, the sliding end of the first synchronous swing arm is slidably connected to the first bracket through the first connecting shaft, the first shaft body and the third shaft body are both connected to the rotating end of the first synchronous swing arm, and the first shaft body is closer to the sliding end of the first synchronous swing arm relative to the second shaft body; The second synchronous swing arm includes a sliding end and a rotating end. The sliding end of the second synchronous swing arm is slidably connected to the second bracket via the second connecting shaft. The second shaft body and the fourth shaft body are both connected to the rotating end of the second synchronous swing arm, and the fourth shaft body is closer to the sliding end of the second synchronous swing arm relative to the second shaft body.

4. The folding device according to claim 3, It is characterized in that One of the first bracket and the sliding end of the first synchronous swing arm is provided with a first sliding groove, and the other is provided with the first connecting shaft, and the first sliding groove and the first connecting shaft are cooperatively connected so that the first bracket and the sliding end of the first synchronous swing arm can slide relative to each other; One of the sliding ends of the second bracket and the second synchronous swing arm is provided with a second sliding groove, and the other is provided with the second connecting shaft. The second sliding groove and the second connecting shaft are cooperatively connected to enable the sliding ends of the second bracket and the second synchronous swing arm to slide relative to each other.

5. The folding device according to any one of claims 1 to 4, It is characterized in that The connecting structure is a connecting rod, the first synchronous swing arm can rotate clockwise around the first shaft and drive the connecting rod to move toward the first synchronous swing arm, and the second synchronous swing arm is driven by the connecting rod to rotate counterclockwise around the second shaft, so that the first bracket and the second bracket are relatively folded; or, The first synchronous swing arm can rotate counterclockwise around the first shaft and drive the connecting rod to move toward the second synchronous swing arm. The second synchronous swing arm is driven by the connecting rod to rotate clockwise around the second shaft to enable the first bracket and the second bracket to unfold relatively.

6. The folding device according to any one of claims 1 to 4, It is characterized in that The fixing structure comprises a first fixing frame and a second fixing frame; the first fixing frame and the second fixing frame are arranged at intervals in the axial direction, and the rotating end of the first synchronous swing arm and the rotating end of the second synchronous swing arm are sandwiched between the first fixing frame and the second fixing frame; One end of the first shaft is connected to the first fixing frame, the first shaft passes through the rotating end of the first synchronous swing arm, and the other end of the first shaft is connected to the second fixing frame; There are two second shafts, the center lines of the two second shafts are collinear, one second shaft connects the first fixed frame and the rotating end of the second synchronous swing arm, and the other second shaft connects the second fixed frame and the rotating end of the second synchronous swing arm.

7. The folding device according to claim 6, It is characterized in that The connecting structure is a connecting rod, the rotating end of the first synchronous swing arm is provided with a first receiving groove, the rotating end of the second synchronous swing arm is provided with a second receiving groove, and the two ends of the connecting rod are respectively installed in the first receiving groove and the second receiving groove.

8. The folding device according to claim 7, It is characterized in that One end of the third shaft is connected to one side wall of the first receiving groove, the third shaft passes through the connecting rod, and the other end of the third shaft is connected to the other side wall of the first receiving groove; One end of the fourth shaft body is connected to one side wall of the second receiving groove, the fourth shaft body passes through the connecting rod, and the other end of the fourth shaft body is connected to the other side wall of the second receiving groove.

9. The folding device according to claim 1, It is characterized in that The center line of the first shaft body is a first axis, the center line of the second shaft body is a second axis, and the first axis and the second axis are symmetrically arranged.

10. The folding device according to claim 9, It is characterized in that The rotating mechanism further includes a fifth shaft, the connecting structure includes a first connecting rod and a second connecting rod, the first connecting rod includes a transmission end and a sliding end, and the second connecting rod includes a transmission end and a sliding end; The transmission end of the first connecting rod is rotatably connected to the first synchronous swing arm through the third shaft, the transmission end of the second connecting rod is rotatably connected to the second synchronous swing arm through the fourth shaft, and the sliding end of the first connecting rod is rotatably connected to the sliding end of the second connecting rod through the fifth shaft; The fixed structure is provided with a slide groove, the extension direction of the slide groove is perpendicular to the extension direction of the fixed structure, and the fifth shaft is slidably connected to the slide groove; The movement of the fifth shaft in the slide slot drives the sliding end of the first connecting rod and the sliding end of the second connecting rod to move relative to the slide slot, so that the first connecting rod and the second connecting rod are relatively folded or relatively unfolded.

11. The folding device according to claim 10, It is characterized in that The first connecting rod and the second connecting rod are symmetrically arranged.

12. The folding device according to claim 10, It is characterized in that When the fifth shaft is located at the top of the slide slot, the first connecting rod and the second connecting rod are relatively spread out, and the first synchronous swing arm and the second synchronous swing arm are close to each other; When the fifth shaft is located at the bottom of the slide groove, the first connecting rod and the second connecting rod are relatively folded, and the first synchronous swing arm and the second synchronous swing arm are away from each other.

13. The folding device according to claim 10, It is characterized in that The first synchronous swing arm can rotate counterclockwise around the first shaft and drive the first connecting rod and the second connecting rod to move upward relative to the bottom of the slide slot, and the second synchronous swing arm is driven by the second connecting rod to rotate clockwise around the second shaft, so that the first bracket and the second bracket are folded relative to each other; or, The first synchronous swing arm can rotate clockwise around the first axis and drive the first connecting rod and the second connecting rod to move downward relative to the top of the slide slot. The second synchronous swing arm is driven by the second connecting rod to rotate counterclockwise around the second axis to make the first bracket and the second bracket unfold relatively.

14. The folding device according to claim 9, It is characterized in that The rotating mechanism further comprises a fifth shaft body, a sixth shaft body and a seventh shaft body, and the connecting structure comprises a first connecting rod, a second connecting rod and a third connecting rod connected in sequence; One end of the first connecting rod is rotatably connected to the first synchronous swing arm through the third shaft, the other end of the first connecting rod is rotatably connected to one end of the second connecting rod through the fifth shaft, the second connecting rod is rotatably connected to the fixed structure through the sixth shaft, the other end of the second connecting rod is rotatably connected to one end of the third connecting rod through the seventh shaft, and the other end of the third connecting rod is rotatably connected to the second synchronous swing arm through the fourth shaft; The second connecting rod can rotate around the sixth axis relative to the fixed structure.

15. The folding device according to claim 14, It is characterized in that When the first bracket and the second bracket are relatively folded to a closed state, the first connecting rod, the second connecting rod and the third connecting rod are relatively unfolded; When the first bracket and the second bracket are relatively unfolded to a flattened state, the first connecting rod, the second connecting rod and the third connecting rod are relatively folded.

16. The folding device according to claim 14, It is characterized in that The first synchronous swing arm can rotate clockwise around the first shaft and drive the first connecting rod to move toward the first synchronous swing arm, the second connecting rod is driven by the first connecting rod to rotate counterclockwise around the third shaft and drive the third connecting rod to move toward the second synchronous swing arm, and the second synchronous swing arm is driven by the third connecting rod to rotate counterclockwise around the second shaft, so that the first bracket and the second bracket are folded relative to each other; or, The first synchronous swing arm can rotate counterclockwise around the first axis and drive the first connecting rod to move toward the second synchronous swing arm. The second connecting rod is driven by the first connecting rod to rotate clockwise around the third axis and drive the third connecting rod to move toward the first synchronous swing arm. The second synchronous swing arm is driven by the third connecting rod to rotate clockwise around the second axis, so that the first bracket and the second bracket are relatively unfolded.

17. An electronic device, It is characterized in that The electronic device comprises a first shell, a second shell and the folding device according to any one of claims 1 to 16, the first bracket is fixed to the first shell, and the second bracket is fixed to the second shell.

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