Rotating mechanism and foldable electronic equipment

Abstract

The invention provides a rotating mechanism and foldable electronic equipment. The rotating mechanism comprises a base, a first main swing arm and a second main swing arm. The first stopping face of the base is located in the first rotating groove of the base, and the plane where the first stopping face is located and the second stopping face of the first main swing arm intersect with the width direction of the base. The first main swing arm is installed in the first rotating groove, the second stopping face faces the first rotating groove, and the first main swing arm can rotate and slide along the first rotating groove. When the first main swing arm is unfolded relative to the base, the first stopping face and the second stopping face are oppositely arranged, the first main swing arm and the base are stopped in the width direction of the base, and the first main swing arm and the second main swing arm can rotate in the direction close to each other so that the first main swing arm can be folded relative to the second main swing arm. According to the rotating mechanism provided by the invention, the vacancy of the foldable electronic equipment in a flattened state can be reduced, and the technical problem that a display screen is easy to generate redundancy and anti-arching is solved.

Description

[0001] This application is a divisional application of a Chinese patent application submitted to the National Intellectual Property Administration on November 21, 2023, with the application number 202311549715.8 and the application title "Rotating Mechanism and Foldable Electronic Device". Technical Field

[0002] This application relates to the technical field of electronic products, and particularly to a rotating mechanism and a foldable electronic device. Background Art

[0003] With the development of technology, the appearance (ID) form of electronic devices (such as mobile phones, tablet computers, etc.) has a trend of developing from straight-bar phones to foldable phones. A foldable electronic device has a large-area display screen in the opened state, fully meeting the visual experience of consumers, and is small in volume and easy to carry in the closed state. The rotating shaft is the core component of a foldable electronic device, and the main swing arm in the rotating shaft supports the movement of the middle frame. In the prior art, when the foldable electronic device is in the flattened state, there is a virtual position in the main swing arm, which will cause redundancy and arching of the display screen, affecting the user experience. Summary of the Invention

[0004] This application provides a rotating mechanism and a foldable electronic device, which can reduce the virtual position of the foldable electronic device in the flattened state and solve the technical problems that the display screen is prone to redundancy and arching.

[0005] In a first aspect, this application provides a rotating mechanism. The rotating mechanism includes a base, a first main swing arm, and a second main swing arm. The base is provided with a first rotating groove and a second rotating groove, and the first rotating groove and the second rotating groove are oppositely arranged along the width direction of the rotating mechanism. The base includes a first stopping surface, and the first stopping surface is located in the first rotating groove, and the plane where the first stopping surface is located intersects with the width direction of the base. The first main swing arm includes a second stopping surface, and the plane where the second stopping surface is located intersects with the width direction of the base. The first main swing arm is installed in the first rotating groove, the second stopping surface faces the first rotating groove, and the first main swing arm can rotate and slide along the first rotating groove; the second main swing arm is installed in the second rotating groove, and the second main swing arm can rotate and slide along the second rotating groove.

[0006] When the first main swing arm is unfolded relative to the base, the first stopping surface and the second stopping surface are oppositely arranged. Along the width direction of the base, the first main swing arm is stopped with the base, and the first main swing arm and the second main swing arm can rotate towards each other to fold the first main swing arm relative to the second main swing arm.

[0007] In this embodiment, by providing a first stop surface on the base and a second stop surface on the first main swing arm, and when the first main swing arm expands relative to the base, the second stop surface is disposed opposite to the first stop surface, the first stop surface can prevent the first main swing arm from moving towards the base along the width direction of the base, thereby reducing or even avoiding the play when the rotating mechanism is in the expanded state and enhancing the user experience; meanwhile, it can also prevent the display screen from having redundancy and reverse arching, and enhancing the service life of the display screen.

[0008] The base further includes a third stop surface located in the second rotating groove, and the plane where the third stop surface is located intersects with the width direction of the base. The second main swing arm includes a fourth stop surface, and the plane where the fourth stop surface is located intersects with the width direction of the base. The second main swing arm is installed in the second rotating groove, the fourth stop surface faces the second rotating groove, and the second main swing arm can rotate and slide along the second rotating groove. When the second main swing arm expands relative to the base, the third stop surface is disposed opposite to the fourth stop surface, and along the width direction of the base, the second main swing arm is stopped with the base.

[0009] In this embodiment, by providing a third stop surface on the base and a fourth stop surface on the second main swing arm, and when the second main swing arm expands relative to the base, the fourth stop surface is disposed opposite to the third stop surface, the third stop surface can prevent the second main swing arm from moving towards the base along the width direction of the base, thereby further reducing or even avoiding the play when the rotating mechanism is in the expanded state and enhancing the user experience.

[0010] In a possible implementation manner, when the first main swing arm expands relative to the base, the first stop surface and the second stop surface abut against each other, and the direction of the abutting force between the first stop surface and the second stop surface is consistent with the width direction of the base. When the second main swing arm expands relative to the base, the fourth stop surface and the third stop surface abut against each other, and the direction of the abutting force between the fourth stop surface and the third stop surface is consistent with the width direction of the base.

[0011] It should be noted that when the rotating mechanism is in the expanded state, when the user is using it, a force towards the base may be applied to the main swing arm, and this force causes the main swing arm to have a tendency to move towards the base along the width direction of the base, and this tendency is the play when the rotating mechanism is in the expanded state.

[0012] In this embodiment, by setting the directions of the first stopping surface and the second stopping surface perpendicular to the width direction of the base, the direction of the abutting force between the first stopping surface and the second stopping surface is made consistent with the width direction of the base, so that the direction of the stopping force of the rotating mechanism is parallel to the direction in which the user squeezes the virtual space when using the foldable electronic device, thereby improving the stopping accuracy of the rotating mechanism and enhancing the user experience.

[0013] In a possible implementation, the first rotating groove includes a first inner wall, the first inner wall is arranged facing away from the second rotating groove, and the first inner wall includes the first stopping surface. The base further includes a first guide rail, the first guide rail is fixed to the first inner wall and extends in a direction away from the second rotating groove, and the first guide rail is arranged side by side with the first stopping surface. The first main swing arm includes a first end, the first main swing arm is provided with a first groove, the opening of the first groove is located on the top surface or the bottom surface of the first main swing arm, and the first groove penetrates through the first end.

[0014] When the first main swing arm is installed on the base, the first end faces the first rotating groove, at least part of the first guide rail is located in the first groove, and the first main swing arm can rotate and slide in the first rotating groove along the first guide rail.

[0015] In this embodiment, by providing a first guide rail on the base, providing a first groove on the first main swing arm, and installing the first guide rail in the first groove, the first main swing arm can rotate relative to the base along the first guide rail, thereby improving the stability of the rotation of the first main swing arm, avoiding the first main swing arm deviating from the preset path during rotation, and further improving the stopping effect and stopping accuracy between the second stopping surface and the first stopping surface.

[0016] In a possible implementation, along the length direction of the base, the first guide rail is arranged side by side with the first stopping surface; the opening of the first groove is located on the bottom surface of the first main swing arm, and the second stopping surface is arranged on the side wall of the first groove and faces the first end. When the first main swing arm is installed on the base, the first guide rail is located on the side of the first groove facing away from the top surface of the base, and the top surface of the first guide rail is opposite to and in contact with the bottom wall surface of the groove.

[0017] In this embodiment, by arranging the first guide rail and the first stopping surface side by side along the length direction of the base and arranging the second stopping surface on the side wall of the first groove, when the first main swing arm rotates relative to the base along the first guide rail, the first stopping surface can rotate along the rotation path of the first main swing arm towards the direction of the second stopping surface, thereby avoiding the first stopping surface deviating from the second stopping surface when the first main swing arm expands relative to the base, and further improving the stopping effect and stopping accuracy between the second stopping surface and the first stopping surface.

[0018] In a possible implementation, along the thickness direction of the base, the first guide rail and the first stop surface are arranged side by side, and the first guide rail is located on the side of the first stop surface close to the top surface of the base. The opening of the first groove is located on the top surface of the first main swing arm, and the second stop surface is arranged at the first end and is connected between the bottom surface of the first main swing arm and the bottom wall surface of the first groove. When the first main swing arm is installed on the base, the first guide rail is located on the side of the first groove close to the top surface of the base, and the bottom surface of the first guide rail faces and contacts the bottom wall surface of the groove.

[0019] In this embodiment, by arranging the second stop surface at the end of the first main swing arm, the area of the second stop surface can be increased, so that the contact area between the second stop surface and the first stop surface can be increased, the stop area between the first main swing arm and the base can be increased, and further the stop effect and stop accuracy between the first main swing arm and the base can be improved, and the virtual position when the rotating mechanism is in the unfolded state can be further reduced or even avoided.

[0020] In a possible implementation, the first stop surface includes a first sub-stop surface. Along the thickness direction of the base, the first sub-stop surface and the first guide rail are arranged side by side, and the first sub-stop surface is located on the side of the first guide rail close to the top surface of the base. The opening of the first groove is located on the bottom surface of the first main swing arm, and the second stop surface includes a second sub-stop surface. The second sub-stop surface is arranged at the first end and is connected between the top surface of the first main swing arm and the bottom wall surface of the first groove.

[0021] When the first main swing arm is installed on the base, the first guide rail is located on the side of the first groove facing away from the top surface of the base, and the top surface of the first guide rail faces and contacts the bottom wall surface of the first groove. When the first main swing arm is unfolded relative to the base, the first sub-stop surface and the second sub-stop surface are arranged opposite to each other.

[0022] In this embodiment, by providing the second sub-stop surface on the second stop surface and arranging the second sub-stop surface at the end of the first main swing arm, the area of the second sub-stop surface can be increased, so that the contact area between the second sub-stop surface and the first sub-stop surface can be increased, the stop area between the first main swing arm and the base can be increased, and further the stop effect and stop accuracy between the first main swing arm and the base can be improved, and the virtual position when the rotating mechanism is in the unfolded state can be further reduced or even avoided.

[0023] In a possible implementation manner, the first stop surface further includes a third sub-stop surface, and along the length direction of the base, the third sub-stop surface is arranged side by side with the first guide rail. The first main swing arm further includes a fourth sub-stop surface, and the fourth sub-stop surface is arranged on the side wall of the first groove and faces the first end. When the first main swing arm is unfolded relative to the base, the third sub-stop surface and the fourth sub-stop surface are arranged opposite to each other.

[0024] In this embodiment, by further providing a third sub-stop surface on the base and a fourth sub-stop surface on the first main swing arm, when the rotating mechanism is in the unfolded state, the first main swing arm and the base are stopped not only by the second sub-stop surface and the first sub-stop surface, but also by the fourth sub-stop surface and the third sub-stop surface, so that the first main swing arm can be further prevented from continuing to move toward the base along the width direction of the base, further improving the stop effect and stop accuracy, reducing or even avoiding the play of the rotating mechanism in the unfolded state, and enhancing the user experience.

[0025] In a possible implementation manner, the first stop surface includes a first sub-stop surface, and along the length direction of the base, the first guide rail is arranged side by side with the first sub-stop surface. The second stop surface includes a second sub-stop surface, and the second sub-stop surface is arranged at one end of the first main swing arm and is connected between the top surface and the bottom surface of the first main swing arm. When the first main swing arm is unfolded relative to the base, the first sub-stop surface and the second sub-stop surface are arranged opposite to each other.

[0026] In this embodiment, by providing a second sub-stop surface on the second stop surface, and the second sub-stop surface is the end surface of the first main swing arm, the area of the second sub-stop surface can be further increased, so that the contact area between the second sub-stop surface and the first sub-stop surface can be increased, the stop area between the first main swing arm and the base can be increased, and further the stop effect and stop accuracy between the first main swing arm and the base can be improved, and the play of the rotating mechanism in the unfolded state can be further reduced or even avoided.

[0027] In a possible implementation manner, the first stopping surface further includes a third sub-stopping surface. Along the length direction of the base, the third sub-stopping surface is arranged side by side with the first stopping surface and the first guide rail, and the third sub-stopping surface is located between the first sub-stopping surface and the first guide rail. The opening of the first groove is located on the bottom surface of the first main swing arm; the second stopping surface further includes a fourth sub-stopping surface, and the fourth sub-stopping surface is arranged on the side wall of the first groove and faces the first end. When the first main swing arm is installed on the base, the first guide rail is located on one side of the top surface of the first groove facing away from the base, and the top surface of the first guide rail is opposite to and in contact with the bottom wall surface of the first groove. When the first main swing arm is unfolded relative to the base, the third sub-stopping surface and the fourth sub-stopping surface are arranged opposite to each other.

[0028] In this embodiment, by further providing a third sub-stopping surface on the base and a fourth sub-stopping surface on the first main swing arm, when the rotating mechanism is in the unfolded state, the first main swing arm and the base are stopped not only by the second sub-stopping surface and the first sub-stopping surface, but also by the fourth sub-stopping surface and the third sub-stopping surface. Thus, it can further prevent the first main swing arm from moving further towards the base along the width direction of the base, further improve the stopping effect and stopping accuracy, reduce or even avoid the play when the rotating mechanism is in the unfolded state, and improve the user experience.

[0029] In a possible implementation manner, the first stopping surface and the second stopping surface are in interference fit.

[0030] It should be noted that the so-called "interference fit" here means mutual abutment and extrusion. In this embodiment, by making the first stopping surface and the second stopping surface in interference fit, a pressing fit between the first stopping surface and the second stopping surface can be achieved, so that it can further prevent the first main swing arm from moving towards the base along the width direction of the base. Furthermore, the stopping accuracy of the rotating mechanism can be further improved, the play when the rotating mechanism is in the unfolded state can be reduced, the reliability of the display screen of the foldable electronic device can be improved, and the user experience can be improved.

[0031] In a possible implementation manner, the interference amount between the first stopping surface and the second stopping surface is 0 mm to 0.1 mm.

[0032] In a possible implementation manner, the rotating mechanism further includes a wear-resistant layer, and the wear-resistant layer is arranged on the first stopping surface or / and the second stopping surface.

[0033] In this embodiment, by providing a wear-resistant layer on the stopping surface, the wear resistance of the stopping surface can be improved, so that the stopping effect between the first stopping surface and the second stopping surface can be improved, and further the service life of the rotating mechanism can be improved, and the stopping accuracy of the rotating mechanism during the whole life process can be improved.

[0034] In a possible implementation, the rotating mechanism has a folded state and an unfolded state. When the rotating mechanism switches from the unfolded state to the folded state, the first main swing arm rotates in a first direction. When the rotating mechanism is in the unfolded state, the first main swing arm and the base are in position in a second direction; wherein, the second direction is opposite to the first direction.

[0035] In this embodiment, when the rotating mechanism is in the unfolded state, the first main swing arm and the base are in position in the second direction, so that the over-unfolding of the foldable electronic device can be avoided, and the display screen can be prevented from being damaged.

[0036] In a possible implementation, the base includes a shaft cover and a support plate. The shaft cover and the support plate are stacked and fixedly connected to each other. When the first main swing arm and the second main swing arm are relatively unfolded, the top surfaces of the first main swing arm and the second main swing arm are flush with the surface of the support plate facing away from the shaft cover.

[0037] The top surface of the first main swing arm, the top surface of the second main swing arm and the top surface of the support plate are jointly used to support the display screen, so that the reliability of the display screen can be improved and the good display of the display screen can be ensured.

[0038] In a second aspect, the present application provides a foldable electronic device. The foldable electronic device includes a first housing, a second housing, a display screen and the above-mentioned rotating mechanism. The rotating mechanism is connected between the first housing and the second housing, and the display screen is mounted on the first housing, the second housing and the rotating mechanism. When the rotating mechanism rotates, the first housing and the second housing rotate relative to each other to drive the display screen to bend or unfold.

[0039] The foldable electronic device with the above-mentioned rotating mechanism has little or no virtual position in the unfolded state, and the display screen is not prone to redundancy and arching phenomena.

[0040] In summary, for the rotating mechanism provided by the present application, by providing a first stop surface on the base and a second stop surface on the first main swing arm, and when the first main swing arm is unfolded relative to the base, the second stop surface is disposed opposite to the first stop surface, so that the second stop surface can prevent the first main swing arm from moving towards the base along the width direction of the base, thereby reducing or even avoiding the virtual position of the rotating mechanism in the unfolded state, improving the user experience; at the same time, it can also prevent the display screen from redundancy and arching, extend the service life of the display screen, and avoid over-unfolding of the foldable electronic device and damage to the display screen. Description of the Drawings

[0041] To more clearly illustrate the technical solutions in the embodiments of the present application or the background art, the following will describe the drawings required for use in the embodiments of the present application or the background art.

[0042] Figure 1 It is a schematic structural diagram of the foldable electronic device provided by the embodiment of the present application in the first state;

[0043] Figure 2 It is a schematic structural diagram of the foldable electronic device provided by the embodiment of the present application in the second state;

[0044] Figure 3 It is a schematic structural diagram of the foldable electronic device provided by the embodiment of the present application in the third state;

[0045] Figure 4 is Figure 3 It is an exploded structural diagram of the foldable electronic device shown;

[0046] Figure 5 is Figure 4 It is a schematic structural diagram of the rotating mechanism in the foldable electronic device shown;

[0047] Figure 6 is Figure 5 It is an exploded structural diagram of the rotating mechanism shown;

[0048] Figure 7 is Figure 5 It is a partial structural diagram of the base in the rotating mechanism shown;

[0049] Figure 8 is Figure 6 It is an enlarged structural diagram of the main swing arm in the rotating mechanism shown;

[0050] Figure 9 is Figure 8 It is a structural diagram of the main swing arm at another angle;

[0051] Figure 10 is Figure 5 It is a partial structural diagram of the rotating mechanism shown;

[0052] Figure 11 is Figure 10 It is a sectional structural diagram of the rotating mechanism along the A-A direction shown;

[0053] Figure 12 is Figure 5 It is a partial structural diagram of the rotating mechanism in the second embodiment shown;

[0054] Figure 13 is Figure 12 It is a structural diagram of the bracket in the rotating mechanism shown;

[0055] Figure 14 is Figure 13 Schematic diagram of the exploded structure of the shown bracket at another angle;

[0056] Figure 15 is Figure 12 Enlarged structure schematic diagram of the main swing arm in the shown rotating mechanism;

[0057] Figure 16 is Figure 15 Enlarged structure schematic diagram of the main swing arm at another angle;

[0058] Figure 17 is Figure 12 Schematic diagram of the sectional structure of the shown rotating mechanism along the B-B direction;

[0059] Figure 18 is Figure 5 Partial structure schematic diagram of the shown rotating mechanism in the third embodiment;

[0060] Figure 19 is Figure 18 Schematic diagram of the exploded structure of the shown rotating mechanism;

[0061] Figure 20 is Figure 18 Schematic diagram of the exploded structure of the shown rotating mechanism at another angle;

[0062] Figure 21 is Figure 18 Schematic diagram of the sectional structure of the shown rotating mechanism along the C-C direction;

[0063] Figure 22 is Figure 5 Partial structure schematic diagram of the shown rotating mechanism in the fourth embodiment;

[0064] Figure 23 is Figure 22 Schematic diagram of the exploded structure of the shown rotating mechanism;

[0065] Figure 24 is Figure 22 Schematic diagram of the exploded structure of the shown rotating mechanism at another angle;

[0066] Figure 25 is Figure 22 Schematic diagram of the sectional structure of the shown rotating mechanism along the D-D direction;

[0067] Figure 26 is Figure 5 Schematic diagram of the structure of the fixed bracket in the first rotating component of the shown rotating mechanism;

[0068] Figure 27 is Figure 5Partial structural schematic diagram of the pressing plate in the shown rotating mechanism;

[0069] Figure 28 is Figure 6 Partial exploded structural schematic diagram of the shown rotating mechanism. Specific implementation manners

[0070] The embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

[0071] With the development of technology, the appearance (ID) form of electronic devices (such as mobile phones, tablet computers, etc.) has a trend of developing from straight-bar phones to foldable phones. The foldable electronic device has a large-area screen in the opened state, fully meeting the visual experience of consumers, and is small in volume and convenient to carry in the closed state. The rotating shaft is the core component of the foldable electronic device, and the main swing arm in the rotating shaft supports the movement of the middle frame. In the prior art, when the foldable electronic device is in the unfolded state, there is a virtual position in the main swing arm, which will cause redundancy and arching of the display screen, affecting the user experience. The rotating mechanism provided in the present application has a stop mechanism, which can reduce the virtual position of the foldable electronic device in the unfolded state and avoid phenomena such as redundancy and arching of the display screen.

[0072] Please refer to Figures 1 to 3 , Figure 1 which is a structural schematic diagram of the foldable electronic device 1000 provided in the embodiment of the present application in the first state, Figure 2 which is a structural schematic diagram of the foldable electronic device 1000 provided in the embodiment of the present application in the second state, Figure 3 which is a structural schematic diagram of the foldable electronic device 1000 provided in the embodiment of the present application in the third state.

[0073] For the convenience of description, the width direction of the foldable electronic device 1000 is defined as the X direction, the length direction of the foldable electronic device 1000 is defined as the Y direction, and the thickness direction of the foldable electronic device 1000 is defined as the Z direction. The X direction, Y direction, and Z direction are perpendicular to each other pairwise.

[0074] The foldable electronic device 1000 includes but is not limited to a cellphone, a notebook computer, a tablet personal computer, a laptop computer, a personal digital assistant, a wearable device, or a mobile device, etc. In the embodiment of the present application, the foldable electronic device 1000 is taken as a mobile phone as an example for illustration.

[0075] The foldable electronic device 1000 includes a folded state and an unfolded state. The unfolded state includes a semi-unfolded state and a flattened state. Figure 1 The illustrated foldable electronic device 1000 is in the folded state. Figure 2 The illustrated foldable electronic device 1000 is in the semi-unfolded state. Figure 3 The illustrated foldable electronic device 1000 is in the flattened state. Among them, Figure 2 The unfolding angle α of the illustrated foldable electronic device 1000 is 90 degrees. Figure 3 The unfolding angle β of the illustrated foldable electronic device 1000 is 180 degrees.

[0076] It should be noted that there are allowable slight deviations in the angles illustrated in the embodiments of the present application. For example, Figure 2 The unfolding angle α of the illustrated foldable electronic device 1000 being 90 degrees means that α can be 90 degrees or approximately 90 degrees, such as 80 degrees, 85 degrees, 95 degrees, or 90 degrees, etc. Figure 3 The unfolding angle β of the illustrated foldable electronic device 1000 being 180 degrees means that β can be 180 degrees or approximately 180 degrees, such as 170 degrees, 175 degrees, 185 degrees, and 190 degrees, etc. The angles illustrated in the following text can be understood in the same way.

[0077] The foldable electronic device 1000 illustrated in the embodiments of the present application is an electronic device that can be folded once. In some other embodiments, the foldable electronic device 1000 can also be an electronic device that can be folded multiple times (more than two times). At this time, the foldable electronic device 1000 can include multiple parts. Two adjacent parts can be relatively close to each other and folded until the foldable electronic device 1000 is in the folded state, and two adjacent parts can be relatively far away from each other and unfolded until the foldable electronic device 1000 is in the flattened state.

[0078] Please refer to Figure 4 , Figure 4 which Figure 3 is a schematic exploded view of the illustrated foldable electronic device 1000.

[0079] The foldable electronic device 1000 includes a folding device 200 and a display screen 300. The display screen 300 is mounted on the folding device 200. The display screen 300 includes a display surface 340 and a mounting surface 350, and the display surface 340 and the mounting surface 350 are arranged opposite to each other. The display surface 340 is used for displaying texts, images, videos, etc. The display screen 300 includes a first part 310, a second part 320, and a foldable part 330. The foldable part 330 is located between the first part 310 and the second part 320, and the foldable part 330 can be bent along the Y direction. The first part 310, the second part 320, and the foldable part 330 together constitute the display screen 300. In this embodiment, the display screen 300 is a flexible display screen 300.

[0080] The folding device 200 includes a first housing 210, a second housing 220, and a rotating mechanism 100. The rotating mechanism 100 is partially fixed to the first housing 210 and partially fixed to the second housing 220 to achieve the rotational connection between the first housing 210 and the second housing 220. The display screen 300 is mounted on the folding device 200, and the mounting surface 350 is fixedly connected to the folding device 200. Specifically, the first housing 210 bears the first part 310 of the display screen 300, and the second housing 220 bears the second part 320. In other words, the first part 310 is mounted on the first housing 210, and the second part 320 is mounted on the second housing 220. Among them, the rotating mechanism 100 is arranged opposite to the foldable part 330. The first housing 210 and the second housing 220 can rotate relative to each other through the rotating mechanism 100, so that the folding device 200 can be switched between a folded state and a flattened state.

[0081] Combined with Figure 1 , the first housing 210 and the second housing 220 rotate relative to each other through the rotating mechanism 100. When the first housing 210 and the second housing 220 approach each other relatively, the display screen 300 is driven to fold, so that the foldable electronic device 1000 folds. When the foldable electronic device 1000 is in the folded state, the foldable part 330 of the display screen 300 is bent, and the first part 310 and the second part 320 are arranged opposite to each other. At this time, the display screen 300 is located between the first housing 210 and the second housing 220, which can greatly reduce the probability of the display screen 300 being damaged and effectively protect the display screen 300.

[0082] Please refer to Figure 2 and Figure 4, the first housing 210 and the second housing 220 rotate relative to each other through the rotating mechanism 100. When the first housing 210 and the second housing 220 move away from each other, the display screen 300 is driven to unfold, so that the foldable electronic device 1000 unfolds to a semi-unfolded state. When the foldable electronic device 1000 is in the semi-unfolded state, the first housing 210 and the second housing 220 are unfolded to an included angle of α, the first part 310 and the second part 320 are unfolded relative to each other, and the foldable part 330 is driven to unfold. At this time, the included angle between the first part 310 and the second part 320 is α. In this embodiment, α is 90 degrees. In other embodiments, α can also be approximately 90 degrees, or can be 80 degrees, 85 degrees, 95 degrees or 0 degrees, etc.

[0083] Please refer to Figure 3 and Figure 4 , the first housing 210 and the second housing 220 rotate relative to each other through the rotating mechanism 100. When the first housing 210 and the second housing 220 move away from each other further, the display screen 300 is driven to unfold further until the foldable electronic device 1000 is flattened. When the folding device 200 is in the flattened state, the included angle between the first housing 210 and the second housing 220 is β. The foldable part 330 is unfolded, and the first part 310 and the second part 320 are unfolded relative to each other. At this time, the included angles between the first part 310, the second part 320 and the foldable part 330 are all β, and the display screen 300 has a large display area, realizing the large-screen display of the foldable electronic device 1000 and improving the user experience. In this embodiment, β is 180 degrees. In other embodiments, β can also be approximately 180 degrees, and can be 170 degrees, 175 degrees, 185 degrees and 190 degrees, etc.

[0084] It should be noted that both the included angle α and the included angle β are the included angles between the first housing 210 and the second housing 220. Here, it is only to distinguish the different angles between the first housing 210 and the second housing 220 of the foldable electronic device 1000 in different states. Among them, the included angle α refers to the angle between the first housing 210 and the second housing 220 when the foldable electronic device 1000 is in the semi-unfolded state; the included angle β refers to the angle between the first housing 210 and the second housing 220 when the foldable electronic device 1000 is in the flattened state.

[0085] Please refer to Figure 5 and Figure 6 , Figure 5 is Figure 4 a schematic structural diagram of the rotating mechanism 100 in the foldable electronic device 1000 shown, Figure 6 is Figure 5 a schematic exploded view of the rotating mechanism 100 shown.

[0086] For the convenience of description, a reference plane P is set in this application. The reference plane P passes through the center of the rotating mechanism 100 and is perpendicular to the X direction. It should be understood that when describing the rotating mechanism 100 in the embodiments of this application, the orientation terms such as "top" and "bottom" are mainly described based on the display orientation of the rotating mechanism 100 in the attached Figure 5 figure, with the direction towards the negative Z-axis as the "top" and the direction towards the positive Z-axis as the "bottom", which does not form a limitation on the orientation of the rotating mechanism 100 in the actual application scenario.

[0087] The rotating mechanism 100 includes a base 10, a rotating component 1, a synchronization component 50, and a pressing plate 40. The rotating component 1 and the synchronization component 50 are both installed on the base 10 and can rotate relative to the base 10, and the synchronization component 50 is slidably connected to the rotating component 1. The pressing plate 40 is installed on the rotating component 1 and is slidably connected to the rotating component 1. When the rotating component 1 rotates relative to the base 10, it drives the pressing plate 40 and the synchronization component 50 to rotate relative to the base 10 at the same time, so as to realize the mutual switching of the rotating mechanism 100 between the folded state and the flattened state.

[0088] In this embodiment, there are four rotating components 1, and the four rotating components 1 are respectively a first rotating component 101, a second rotating component 102, a third rotating component 103, and a fourth rotating component 104. The first rotating component 101, the second rotating component 102, the third rotating component 103, and the fourth rotating component 104 are arranged at intervals in the Y direction in sequence. Among them, the first rotating component 101 is located on the positive Y-axis side of the base 10, the fourth rotating component 104 is located on the negative Y-axis side of the base 10, and the second rotating component 102 and the third rotating component 103 are located between the first rotating component 101 and the second rotating component 102. In other embodiments, the rotating component 1 can also be one, two, three, or more than five. This application does not specifically limit the number of the rotating components 1.

[0089] The first rotating assembly 101 includes a fixing frame 30 and a main swing arm 20. The fixing frame 30 includes a first fixing frame 31 and a second fixing frame 32. The main swing arm 20 includes a first main swing arm 21, a second main swing arm 24, a third main swing arm 27, and a fourth main swing arm 28. The main swing arm 20 is mounted on the base 10 and can slide and rotate relative to the base 10. Among them, the first fixing frame 31, the first main swing arm 21, and the third main swing arm 27 are located on one side of the base 10 in the X direction, and both the first main swing arm 21 and the third main swing arm 27 are rotatably connected to the first fixing frame 31. When the first fixing frame 31 rotates relative to the base 10, it drives the first main swing arm 21 and the third main swing arm 27 to slide and rotate relative to the base 10. The second fixing frame 32, the second main swing arm 24, and the fourth main swing arm 28 are located on the other side of the base 10 in the X direction, and both the second main swing arm 24 and the fourth main swing arm 28 are rotatably connected to the second fixing frame 32. When the second fixing frame 32 rotates relative to the base 10, it drives the second main swing arm 24 and the fourth main swing arm 28 to slide and rotate relative to the base 10.

[0090] The second rotating assembly 102 and the first rotating assembly 101 can be the same or similar components, symmetric or partially symmetric structures, or different structures. In this embodiment, the second rotating assembly 102 has the same structure as the first rotating assembly 101. The second rotating assembly 102 includes a fixing frame 30A and a main swing arm 20A. The fixing frame 30A includes a first fixing frame 31A and a second fixing frame 32A. The main swing arm 20A includes a first main swing arm 21A, a second main swing arm 24A, a third main swing arm 27A, and a fourth main swing arm 28A. The basic structure of each component in the second rotating assembly 102, the connection relationship between components, and the connection relationship between components and components outside the assembly can all refer to the relevant design of the first rotating assembly 101. The second rotating assembly 102 and the first rotating assembly 101 can be the same or different in the detailed structure or position arrangement of components.

[0091] The third rotating assembly 103 and the first rotating assembly 101 can be the same or similar components, symmetric or partially symmetric structures, or different structures. In this embodiment, the third rotating assembly 103 includes a fixing frame 30B and a main swing arm 20B. The fixing frame 30B includes a first fixing frame 31B and a second fixing frame 32B. The main swing arm 20B includes a first main swing arm 21B and a second main swing arm 24B. The basic structure of each component in the third rotating assembly 103, the connection relationship between components, and the connection relationship between components and components outside the assembly can all refer to the relevant design of the first rotating assembly 101. In this embodiment, the difference between the third rotating assembly 103 and the first rotating assembly 101 is that the main swing arm 20B in the third rotating assembly 103 has two. That is, the main swing arm 20B of the third rotating assembly 103 only includes the first main swing arm 21B and the second main swing arm 24B, and does not include the third main swing arm and the fourth main swing arm.

[0092] The fourth rotating assembly 104 and the first rotating assembly 101 may be the same or similar components, symmetric or partially symmetric structures, or different structures. In this embodiment, the fourth rotating assembly 104 includes a fixed frame 30C and a main swing arm 20C. The fixed frame 30C includes a first fixed frame 31C and a second fixed frame 32C. The main swing arm 20C includes a first main swing arm 21C and a second main swing arm 24C. For the basic structures of the various components in the fourth rotating assembly 104, the connection relationships between the components, and the connection relationships between the components and the components outside the assembly, the relevant designs of the first rotating assembly 101 can be referred to. The fourth rotating assembly 104 and the first rotating assembly 101 may be the same or different in the detailed structures or positional arrangements of the components. In this embodiment, the difference between the fourth rotating assembly 104 and the first rotating assembly 101 is that there are two main swing arms 20 in the fourth rotating assembly 104. That is, the main swing arm 20C of the fourth rotating assembly 104 only includes the first main swing arm 21C and the second main swing arm 24C, and does not include the third main swing arm and the fourth main swing arm. Moreover, the structure of the first main swing arm 21C in the fourth rotating assembly 104 is slightly different from that of the first main swing arm 21 in the first rotating assembly 101.

[0093] It should be noted that in this embodiment, the first fixed frame and the second fixed frame in the four rotating assemblies 1 are both separate structural members. That is, the first fixed frame in the four rotating assemblies 1 is a split structure, and the second fixed frame is a split structure. In some other embodiments, the first fixed frames in the four rotating assemblies 1 may also be fixedly connected to each other to form a single structural member, and the second fixed frames are fixedly connected to each other to form a single structural member. That is, the first fixed frame 31 in the first rotating assembly 101, the first fixed frame 31A of the second rotating assembly 102, the first fixed frame 31B of the third rotating assembly 103, and the first fixed frame 31C of the fourth rotating assembly 104 are fixedly connected to each other and form the same structural member. The second fixed frame 32 in the first rotating assembly 101, the second fixed frame 32B of the second rotating assembly 102, the second fixed frame 32B of the third rotating assembly 103, and the second fixed frame 32C of the fourth rotating assembly 104 are fixedly connected to each other and form the same structural member.

[0094] The pressing plate 40 includes a first pressing plate 41 and a second pressing plate 42. The first pressing plate 41 is installed on the first fixing frame and is simultaneously rotationally and slidably connected to the first fixing frames 31, 31A, 31B, 31C. At the same time, the first pressing plate 41 is also simultaneously rotationally and slidably connected to the first main swing arms 21, 21A, 21B, 21C and the third main swing arm 27. When the first fixing frames 31, 31A, 31B, 31C rotate relative to the base 10, they drive the first pressing plate 41 to rotate relative to the base 10, rotate and slide relative to the first fixing frame 31, and simultaneously rotate and slide relative to the first main swing arms 21, 21A, 21B, 21C. The second pressing plate 42 is installed on the second fixing frame 32 and is simultaneously rotationally and slidably connected to the second fixing frames 32, 32A, 32B, 32C. At the same time, the second pressing plate 42 is also simultaneously rotationally and slidably connected to the second main swing arms 24, 24A, 24B, 24C and the fourth main swing arm 28. When the second fixing frames 32, 32A, 32B, 32C rotate relative to the base 10, they drive the second pressing plate 42 to rotate relative to the base 10, rotate and slide relative to the second fixing frame 32, and simultaneously rotate and slide relative to the second main swing arms 24, 24A, 24B, 24C. It can be understood that the main swing arm 20 of this embodiment is simultaneously connected to the fixing frame and the pressing plate, and the fixing frame 30 and the pressing plate 40 can jointly drive the main swing arm 20 to rotate relative to the base 10. That is to say, the main swing arm 20 of this embodiment also serves as the function of the pressing plate swing arm.

[0095] In some other embodiments, the main swing arm 20 may not be connected to the pressing plate 40. The rotating mechanism 100 further includes a pressing plate swing arm. One end of the pressing plate swing arm is installed on the base 10 and is rotationally connected to the base 10, and the other end is installed on the pressing plate 40 and is rotationally and slidably connected to the pressing plate 40. When the pressing plate 40 rotates relative to the base 10, it drives the pressing plate swing arm to rotate relative to the base 10. That is to say, the pressing plate swing arm and the main swing arm 20 are two separately provided swing arms.

[0096] The synchronization component 50 is installed on the base 10 and is slidably connected to the fixing frame 30. In this embodiment, there are three synchronization components 50. The four synchronization components 50 are respectively the first synchronization component 501, the second synchronization component 502, and the third synchronization component 503. The first synchronization component 501 includes a first synchronization swing arm 51, a second synchronization swing arm 52, a synchronization gear 53, and a damping member 60. The first synchronization swing arm 51 and the second synchronization swing arm 52 are respectively disposed on opposite sides of the synchronization gear 53 in the X direction, are engaged with the synchronization gear 53, and are hinged to the damping member 60 at the same time. Both the damping member 60 and the synchronization gear 53 are installed on the base 10 and can rotate relative to the base 10. The first synchronization swing arm 51 is on the same side as the first main swing arm 21, is spaced from the first main swing arm 21 and the third main swing arm 27, and is slidably connected to the first fixing frame 31 in the first rotating assembly 101. The second synchronization swing arm 52 is on the same side as the second main swing arm 24, is spaced from the second main swing arm 24 and the fourth main swing arm 28, and is slidably connected to the second fixing frame 32 in the first rotating assembly 101. When the first rotating assembly 101 rotates relative to the base 10, it drives the first synchronization swing arm 51 to rotate, thereby driving the synchronization gear 53 to rotate, so as to drive the second synchronization swing arm 52 to rotate, and further realize the synchronous rotation of the rotating mechanism 100. At the same time, when the first synchronization swing arm 51 and the second synchronization swing arm 52 rotate relative to the base 10, they abut against the damping member 60, causing the damping member 60 to generate an elastic force, which in turn acts on the first synchronization swing arm 51 and the second synchronization swing arm 52, thereby providing a damping force for the rotating mechanism 100 and providing a damping feel for the user.

[0097] The second synchronization component 502 and the third synchronization component 503 may be the same or similar components, symmetric or partially symmetric structures, or different structures as the first synchronization component 501. In this embodiment, the structure of the second synchronization component 502 is a mirror-symmetric structure with the first synchronization component 501. The second synchronization component 502 is installed on the base 10 and is slidably connected to the fixing frame 30A in the second rotating assembly 102. The structure of the third synchronization component 503 is a mirror-symmetric structure with the first synchronization component 501. The third synchronization component 503 is installed on the base 10 and is slidably connected to the fixing frame 30C in the fourth rotating assembly 104.

[0098] It can be understood that the synchronization swing arms in the first synchronization component 501, the second synchronization component 502, and the third synchronization component 503 also serve as damping swing arms. When the damping member 60 acts on the synchronization swing arms, the synchronization swing arms have a damping force.

[0099] In this embodiment, the rotating mechanism 100 further includes an auxiliary damping assembly 70. The auxiliary damping assembly 70 includes an auxiliary damper 71, a first damping swing arm 72, and a second damping swing arm 73. The auxiliary damper 71 has the same or similar structure as the damper 60. The auxiliary damper 71 is installed on the base 10. The first damping swing arm 72 and the second damping swing arm 73 are respectively disposed on opposite sides of the auxiliary damper 71 in the X direction and are hinged to the auxiliary damper 71. The first damping swing arm 72 is slidably connected to the first fixing bracket 31B in the third rotating assembly 103. The second damping swing arm 73 is slidably connected to the second fixing bracket 32B in the third rotating assembly 103. When the first fixing bracket 31B rotates relative to the base 10, it drives the first damping swing arm 72 to rotate relative to the base 10 and abuts against the auxiliary damper 71, causing the auxiliary damper 71 to generate an elastic force, which in turn acts on the first damping swing arm 72. When the second fixing bracket 32B rotates relative to the base 10, it drives the second damping swing arm 73 to rotate relative to the base 10 and abuts against the auxiliary damper 71, causing the auxiliary damper 71 to generate an elastic force, which in turn acts on the second damping swing arm 73, thereby further providing a damping force for the rotating mechanism 100.

[0100] Please refer to Figure 7 , Figure 7 is Figure 5 a partial structural schematic diagram of the base 10 in the rotating mechanism 100 shown in the figure.

[0101] The base 10 is strip-shaped. The length direction of the base 10 is parallel to the Y direction. The base 10 includes a shaft cover 11, a bracket 12, and a support plate 13. The shaft cover 11, the bracket 12, and the support plate 13 are sequentially stacked and fixedly connected to each other. The shaft cover 11 includes an outer surface 111 and an inner surface 112. The outer surface 111 and the inner surface 112 are oppositely arranged and are respectively located on opposite sides of the shaft cover 11 in the thickness direction (Z direction).

[0102] The bracket 12 includes a plate body 121 and a stop block 123. The stop block 123 includes a first stop block 124 and a second stop block 125. In this embodiment, both the first stop block 124 and the second stop block 125 are multiple. A plurality of first stop blocks 124 are arranged at intervals in the Y direction on one side of the plate body 121 in the X direction. A plurality of second stop blocks 125 are arranged at intervals in the Y direction on the other side of the plate body 121 in the X direction. In this embodiment, the bracket 12 includes a plurality of sub-brackets 12. The plurality of sub-brackets 12 are arranged at intervals in the Y direction on the inner surface 112 of the shaft cover 11 and are fixedly connected to the shaft cover 11. In other embodiments, the bracket 12 may also be an integral structure.

[0103] The support plate 13 is a long strip-shaped plate structure. The support plate 13 includes a support plate body 14 and a guide rail portion 17. The guide rail portion 17 is fixedly connected to the support plate body 14. The guide rail portion 17 is used to install the main swing arm 20 so that the main swing arm 20 slides and rotates along the guide rail portion 17.

[0104] The support plate body 14 includes a top surface 141, a bottom surface 142, a first side surface 143 and a second side surface 144. The top surface 141 and the bottom surface 142 are arranged oppositely and are respectively located on opposite sides in the Z direction. The first side surface 143 and the second side surface 144 are arranged oppositely and are respectively located on opposite sides in the X direction, and are connected between the top surface 141 and the bottom surface 142. The top surface 141 is provided with an avoidance groove 145. The avoidance groove 145 is formed by bending and recessing from the first side surface 143 and the second side surface 144 respectively towards the center of the top surface 141 in the X direction. The avoidance groove 145 is used to avoid the display screen 300. When the foldable electronic device 1000 is in a folded state, at least a part of the bent portion of the display screen 300 is located in the avoidance groove 145, so as to avoid bad phenomena such as creases when the display screen 300 is bent, which helps to extend the service life of the display screen 300.

[0105] The support plate body 14 is provided with a first notch 15 and a second notch 16. The first notch 15 and the second notch 16 are arranged at intervals and oppositely in the X direction. The first notch 15 is arranged on the first side surface 143 and penetrates through the top surface 141 and the bottom surface 142. The first notch 15 includes a first inner wall 151 and two second inner walls 154. The two second inner walls 154 are arranged oppositely in the Y direction, and the first inner wall 151 is connected between the two second inner walls 154. The first inner wall 151 includes a first arc surface 152 and a first stop surface 153. The first arc surface 152 includes two sub-arc surfaces. The two sub-arc surfaces are respectively located on opposite sides of the first inner wall 151 in the Y direction. The first stop surface 153 is located between the two sub-arc surfaces of the first arc surface 152. The first stop surface 153 faces the first side surface 143. The first stop surface 153 is a plane, and the plane where the first stop surface 153 is located intersects with the X direction. In this embodiment, the first stop surface 153 is perpendicular to the X direction. The first stop surface 153 is used for stopping with the first main swing arm 21.

[0106] The second notch 16 is symmetrically arranged with respect to the reference plane P with the first notch 15. The second notch 16 is arranged on the second side surface 144 and penetrates through the top surface 141 and the bottom surface 142. The second notch 16 includes a third inner wall 161 and two fourth inner walls 164. The two fourth inner walls 164 are arranged oppositely in the Y direction, and the third inner wall 161 is connected between the two fourth inner walls 164. The third inner wall 161 includes a second arc surface 162 and a third stop surface 163. The third stop surface 163 is located between the two sub-arc surfaces of the second arc surface 162. The third stop surface 163 faces the second side surface 144. The third stop surface 163 is a plane, and the plane where the third stop surface 163 is located intersects with the X direction. In this embodiment, the third stop surface 163 is perpendicular to the X direction. The third stop surface 163 is used for stopping with the second main swing arm 24.

[0107] The guide rail part 17 includes a first slide rail 171 and a first guide rail 172. Both the first slide rail 171 and the first guide rail 172 are provided on the inner wall of the first notch 15. In this embodiment, there are two first slide rails 171. Each first slide rail 171 is fixed to a second inner wall 154 and extends into the first notch 15. The two first slide rails 171 are arranged opposite to each other and spaced apart in the Y direction. The top surface of the first slide rail 171 is flush with the top surface 141 and is used to support the display screen 300 together. The bottom surface of the first slide rail 171 is arc-shaped and is used to cooperate with the first main swing arm 21. One end of the first guide rail 172 is fixedly connected to the first inner wall 151, and the other end extends towards the first side surface 143. And, the first stop surface 153 is located on the opposite sides of the first guide rail 172. The top surface of the first guide rail 172 is arc-shaped and is used to cooperate with the first main swing arm 21.

[0108] The guide rail part 17 further includes a second slide rail 173 and a second guide rail 174. Both the second slide rail 173 and the second guide rail 174 are provided on the inner wall of the second notch 16. In this embodiment, there are two second slide rails 173. One second slide rail 173 is fixed to a fourth inner wall 164 and extends into the second notch 16. The two second slide rails 173 are arranged opposite to each other and spaced apart in the Y direction. The top surface of the second slide rail 173 is flush with the top surface 141 and is jointly used to support the display screen 300. The bottom surface of the second slide rail 173 is arc-shaped and is used to cooperate with the second main swing arm 24. One end of the second guide rail 174 is fixedly connected to the third inner wall 161, and the other end extends towards the second side surface 144. The top surface 141 of the second guide rail 174 is arc-shaped and is used to cooperate with the second main swing arm 24.

[0109] The support plate body 14 is further provided with a first mounting opening 146, a second mounting opening 147, a third notch 148 and a fourth notch 149. The first mounting opening 146 and the second mounting opening 147 are symmetrically arranged with respect to the reference plane P. The third notch 148 and the fourth notch 149 are symmetrically arranged with respect to the reference plane P. And, the first mounting opening 146, the third notch 148 and the first notch 15 are arranged side by side and spaced apart in the Y direction, and the second mounting opening 147, the fourth notch 149 and the second notch 16 are arranged side by side and spaced apart in the Y direction. Among them, the structure of the third notch 148 is the same as that of the first notch 15, and the structure of the fourth notch 149 is the same as that of the second notch 16. The first mounting opening 146 is used to mount the first synchronous swing arm 51, and the second mounting opening 147 is used to mount the second synchronous swing arm 52.

[0110] The guide rail part 17 further includes a third slide rail 175, a fourth slide rail 176, a third guide rail 177 and a fourth guide rail 178. The structure of the third slide rail 175 is the same as that of the first slide rail 171. The structure of the third guide rail 177 is the same as that of the first guide rail 172. The third slide rail 175 and the third guide rail 177 are fixed to the inner wall of the third notch 148. The structure of the fourth slide rail 176 is the same as that of the second slide rail 173. The structure of the fourth guide rail 178 is the same as that of the second guide rail 174. The fourth slide rail 176 and the fourth guide rail 178 are fixed to the inner wall of the fourth notch 149.

[0111] The bracket 12 is installed on the inner surface 112 of the shaft cover 11. The three sub-brackets 12 of the bracket 12 are arranged side by side and spaced apart in the Y direction. The support plate 13 is installed on the side of the bracket 12 facing away from the shaft cover 11 and is clamped between the first stop block 124 and the second stop block 125. The stop block 123 plays a role in fixing the support plate 13 and can improve the structural stability of the support plate 13. The base 10 further includes a plurality of bolts. The bolts pass through the support plate 13 and the bracket 12 and are fixedly connected to the shaft cover 11, thereby realizing the fixed connection between the support plate 13, the bracket 12 and the shaft cover 11.

[0112] It can be understood that the inner wall of the first notch 15 and the first sub-bracket 12 enclose a first rotation groove, and the first stop surface 153 is located in the first rotation groove. The first rotation groove is used to install the first main swing arm 21, and the first main swing arm 21 can rotate and slide in the first rotation groove. The inner wall of the second notch 16 and the first sub-bracket 12 enclose a second rotation groove, and the third stop surface 163 is located in the second rotation groove. The second rotation groove is used to install the second main swing arm 24, and the second main swing arm 24 can rotate and slide in the second rotation groove. The first rotation groove and the second rotation groove are arranged opposite to each other in the width direction (X direction) of the base 10. The inner wall of the third notch 148 and the third sub-bracket 12 enclose a third rotation groove, and the third rotation groove is used to install the third main swing arm 27. The inner wall of the fourth notch 149 and the third sub-bracket 12 enclose a fourth rotation groove, and the fourth rotation groove is used to install the fourth main swing arm 28.

[0113] It should be noted that Figure 7 only a partial structure of the base 10 in the positive Y-axis direction is shown. The structure of the base 10 in the negative Y-axis direction is the same as or similar to the structure in the positive Y-axis direction, and the structure of the base 10 in the negative Y-axis direction can be appropriately adjusted according to the structures of the second rotation assembly 102, the third rotation assembly 103 and the fourth rotating member.

[0114] Please refer to Figure 8 and Figure 9 , Figure 8 is Figure 6 an enlarged structural schematic diagram of the main swing arm 20 in the shown rotating mechanism 100, Figure 9 isFigure 8 Schematic structural diagram of the main swing arm 20 at another angle.

[0115] The main swing arm 20 includes a first main swing arm 21 and a second main swing arm 24. The first main swing arm 21 includes a first rotating body 22, a first swinging body 212, and a first shaft seat 211. The first shaft seat 211 is provided with a shaft hole. The extending direction of the shaft hole of the first shaft seat 211 is parallel to the Y direction. The first shaft seat 211 is used for rotatably connecting with the first main swing arm 21. The first swinging body 212 is in the shape of a flat plate. The first swinging body 212 is provided with a first rotating hole 213. The first rotating hole 213 penetrates through the first main swing arm 21 in the width direction (Y direction) of the first main swing arm 21. The extending direction of the first rotating hole 213 is parallel to the Y direction. That is, the extending direction of the first rotating hole 213 is consistent with the extending direction of the first shaft seat 211. The first swinging body 212 is fixedly connected between the first shaft seat 211 and the first rotating body 22.

[0116] The first rotating body 22 includes a first end 221 and a second end 222. The first end 221 and the second end 222 are oppositely arranged and are respectively located on opposite sides in the X direction. The second end 222 of the first rotating body 22 is fixedly connected to one end of the first swinging body 212 facing away from the first shaft seat 211. The first rotating body 22 includes a first support surface 223 and a first rotating surface 224. The first rotating surface 224 and the first support surface 223 are oppositely arranged along the thickness direction of the first main swing arm 21. The first rotating surface 224 is a curved surface and is used for being installed in the first rotating groove. The first support surface 223 is a plane. When the first main swing arm 21 expands relative to the base 10, the first support surface 223 and the top surface 141 of the support plate 13 are substantially in the same plane and are used for jointly supporting the display screen 300. The first support surface 223 is respectively provided with a first arc-shaped groove 225 on opposite sides in the Y direction. The first arc-shaped groove 225 is used for slidingly connecting with the first slide rail 171.

[0117] The first rotating body 22 is further provided with a first groove 227 and a first avoidance hole 226. The opening of the first groove 227 is located on the first rotating surface 224 and penetrates through the first end 221. The first groove 227 includes a first bottom wall 2271 and two first side walls 2272. The two first side walls 2272 are arranged oppositely along the Y direction and are both fixedly connected to the first bottom wall 2271. The first bottom wall 2271 is arc-shaped and is used for sliding connection with the first guide rail 172. The first side wall 2272 is provided with a step structure. The first main swing arm 21 further includes a second stop surface 23. The second stop surface 23 is located at the step structure of the first side surface 143. The second stop surface 23 faces the first end 221. The second stop surface 23 is the step surface of the step structure provided on the first side wall 2272. The plane where the second stop surface 23 is located intersects with the X direction. The second stop surface 23 is used for stopping with the first stop surface 153. In this embodiment, the second stop surface 23 is perpendicular to the X direction. In some other embodiments, the included angle between the second stop surface 23 and the X direction may also be slightly greater than 90 degrees or slightly less than 90 degrees. The first avoidance hole 226 is provided on the first bottom wall 2271 and penetrates through the first rotating body 22 in the thickness direction of the first rotating body 22. The first avoidance hole 226 is used for avoiding the first guide rail 172.

[0118] The second main swing arm 24 has the same structure as the first main swing arm 21. The second main swing arm 24 includes a second rotating body 25, a second swinging body 242 and a second shaft seat 241. The second swinging body 242 is provided with a second rotating hole 243. The second swinging body 242 is fixedly connected between the second shaft seat 241 and the second rotating body 25. The second rotating body 25 includes a third end 251 and a fourth end 252. The fourth end 252 is fixedly connected to one end of the second swinging body 242 facing away from the second shaft seat 241.

[0119] The second rotating body 25 includes a second support surface 253 and a second rotating surface 254. When the second main swing arm 24 is unfolded relative to the base 10, the second support surface 253 and the top surface 141 of the support plate 13 are substantially in the same plane and are used for jointly supporting the display screen 300. The second support surface 253 is provided with a second arc-shaped groove 255, a second groove 257 and a second avoidance hole 256. The second arc-shaped groove 255 is used for sliding connection with the second slide rail 173. The opening of the second groove 257 is located on the second rotating surface 254 and penetrates through the third end 251. The second groove 257 includes a second bottom wall 2571 and two second side walls 2572. The second bottom wall 2571 is used for sliding connection with the second guide rail 174. The second side wall 2572 is provided with a step structure. The second main swing arm 24 further includes a fourth stop surface 26. The fourth stop surface 26 is located at the step structure of the second side wall 2572. The fourth stop surface 26 faces the third end 251. The fourth stop surface 26 is the step surface of the step structure provided on the second side wall 2572. The fourth stop surface 26 is used for stopping with the third stop surface 163.

[0120] Please refer to Figure 6 as well. The structure of the third main swing arm 27 is the same as that of the first main swing arm 21, and the structure of the fourth main swing arm 28 is the same as that of the second main swing arm 24, which will not be elaborated here.

[0121] Please refer to Figure 10 and Figure 11 , Figure 10 which Figure 5 is a partial structural schematic diagram of the rotating mechanism 100 shown in Figure 11 and Figure 10 is a sectional structural schematic diagram of the rotating mechanism 100 shown in along the A-A direction. In the attached drawings of this application, "sectioned along A-A" means sectioned along the A-A line and the plane where the arrows at both ends of the A-A line are located. The same understanding can be made for the description of the attached drawings in the following text.

[0122] Both the first main swing arm 21 and the second main swing arm 24 are installed on the base 10 and are respectively located on the opposite sides of the base 10 along the X-axis. Among them, the first rotating body 22 of the first main swing arm 21 is installed in the first rotating groove. The first rotating surface 224 faces the bracket 12. The first slide rail 171 is located in the first arc-shaped groove 225, and the bottom surface of the first slide rail 171 is opposite to and in contact with the bottom wall of the first arc-shaped groove 225. The first guide rail 172 is located in the first groove 227, and the top surface of the first guide rail 172 is opposite to and in contact with the first bottom wall 2271 of the first groove 227. The opposite two side walls of the first guide rail 172 in the Y direction are respectively opposite to the opposite two first side walls 2272 of the first groove 227. When the first main swing arm 21 rotates relative to the base 10, the first rotating body 22 can slide and rotate in the first rotating groove along the extension directions of the first slide rail 171 and the first guide rail 172.

[0123] The second rotating body 25 of the second main swing arm 24 is installed in the second rotating groove. The second rotating surface 254 faces the bracket 12. The second slide rail 173 is located in the second arc-shaped groove 255, and the bottom surface of the second slide rail 173 is opposite to and in contact with the bottom wall of the second arc-shaped groove 255. The second guide rail 174 is located in the second groove 257, and the top surface 141 of the second guide rail 174 is opposite to and in contact with the second bottom wall 2571 of the second groove 257. The opposite two side walls of the second guide rail 174 in the Y direction are respectively opposite to the opposite two second side walls 2572 of the second groove 257. When the second main swing arm 24 rotates relative to the base 10, the second rotating body 25 can slide and rotate in the second rotating groove along the extension directions of the second slide rail 173 and the second guide rail 174.

[0124] Among them, the first main swing arm 21 and the second main swing arm 24 rotate in opposite directions relative to the base 10. Exemplarily, when the rotating mechanism 100 switches from the folded state to the flattened state, the first main swing arm 21 rotates along the second direction, and the second main swing arm 24 rotates along the first direction. When the rotating mechanism 100 switches from the flattened state to the folded state, the first main swing arm 21 rotates along the first direction, and the second main swing arm 24 rotates along the second direction. Among them, the first direction is opposite to the second direction. In this embodiment, the first direction is the counterclockwise direction, and the second direction is the clockwise direction.

[0125] When the rotating mechanism 100 switches from the folded state to the flattened state, the first main swing arm 21 rotates clockwise, the first rotating surface 224 slides along the first arc surface 152 towards the direction close to the first rotating groove, the bottom wall of the first arc-shaped groove 225 slides along the bottom surface of the first slide rail 171 towards the direction close to the first rotating groove, the first bottom wall 2271 of the first groove 227 slides along the top surface of the first guide rail 172 towards the direction close to the first rotating groove, and the second stop surface 23 moves towards the first stop surface 153 and is stopped against each other. The second main swing arm 24 rotates counterclockwise, the second rotating surface 254 slides along the second arc surface 162 towards the direction close to the second rotating groove, the bottom wall of the second arc-shaped groove 255 slides along the bottom surface of the second slide rail 173 towards the direction close to the second rotating groove, the second bottom wall 2571 of the second groove 257 slides along the top surface 141 of the second guide rail 174 towards the direction close to the second rotating groove, and the fourth stop surface 26 moves towards the third stop surface 163 and is stopped against each other, so that the rotating mechanism 100 is in the flattened state.

[0126] When the rotating mechanism 100 is in the flattened state, the first main swing arm 21 and the second main swing arm 24 are unfolded relative to the base 10. One end of the first guide rail 172 facing away from the first inner wall 151 is located in the first avoidance hole 226, and one end of the second guide rail 174 facing away from the third inner wall 161 is located in the second avoidance hole 256. The first support surface 223, the second support surface 253 and the top surface 141 of the support plate 13 are substantially in the same plane and are jointly used to support the display screen 300. The second stop surface 23 and the first stop surface 153 are opposite to each other and are locked with each other. The second stop surface 23 and the first stop surface 153 can just touch each other or can be abutted against each other. The fourth stop surface 26 and the third stop surface 163 are opposite to each other and are locked with each other. The fourth stop surface 26 and the third stop surface 163 can just touch each other or can be abutted against each other.

[0127] When the rotating mechanism 100 switches from the flattened state to the folded state, the first main swing arm 21 rotates counterclockwise, the first rotating body 22 rotates and slides along the first slide rail 171 and the first guide rail 172 away from the first rotating groove, and the second stop surface 23 moves away from the first stop surface 153 and unlocks with the first stop surface 153. The second main swing arm 24 rotates clockwise, the second rotating body 25 rotates and slides along the second slide rail 173 and the second guide rail 174 away from the second rotating groove, the fourth stop surface 26 moves away from the third stop surface 163 and unlocks with the third stop surface 163, and the first main swing arm 21 and the second main swing arm 24 are folded relative to each other, so that the rotating mechanism 100 is in the folded state.

[0128] It should be noted that when the rotating mechanism 100 is in the flattened state, when the user uses it, a force is applied to the main swing arm 20 in the direction towards the base 10. This force makes the main swing arm 20 tend to move in the direction towards the base 10 along the width direction (X direction) of the base 10. This tendency is the virtual position of the rotating mechanism 100 when it is in the flattened state. When there is still room for the main swing arm 20 to move towards the base 10, the main swing arm 20 will continue to move towards the base 10 along the X direction. That is, the rotating mechanism 100 has a large virtual position, which will affect the user experience. Moreover, after the main swing arm 20 continues to move towards the base 10 along the X direction, it will squeeze the display screen 300, resulting in phenomena such as redundancy and reverse arch of the display screen 300, and thus the display screen 300 will be damaged. Here, "redundancy" means that when the display screen 300 is squeezed by the relative two sides along the X direction towards the middle, a wrinkled phenomenon appears. "Reverse arch" means that the display screen 300 bends away from the base 10.

[0129] In this embodiment, by providing the first stop surface 153 in the first rotating groove and the second stop surface 23 on the first main swing arm 21, and when the rotating mechanism 100 is in the flattened state, the second stop surface 23 abuts against the first stop surface 153, so that when the rotating mechanism 100 is in the flattened state, the second stop surface 23 can prevent the first main swing arm 21 from moving towards the base 10 along the X direction. That is, the first main swing arm 21 and the base 10 are stopped in the X direction, so that the virtual position of the rotating mechanism 100 in the flattened state can be reduced or even avoided, and the user experience can be improved; at the same time, the redundancy and reverse arch of the display screen 300 can also be avoided, and the service life of the display screen 300 can be improved. Moreover, when the rotating mechanism 100 is in the flattened state, the first main swing arm 21 and the base 10 are also stopped in the clockwise direction, so that the first main swing arm 21 can be prevented from further rotating clockwise, and the over-expansion of the foldable electronic device 1000 can be avoided, and the display screen 300 can be prevented from being damaged.

[0130] Moreover, in this embodiment, by providing a third stopping surface 163 in the second rotation groove, a fourth stopping surface 26 is provided on the second main swing arm 24, and when the rotating mechanism 100 is in the flattened state, the fourth stopping surface 26 abuts against the third stopping surface 163, so that when the rotating mechanism 100 is in the flattened state, the second main swing arm 24 cannot move in the X direction towards the base 10, thereby further reducing or even avoiding the play when the rotating mechanism 100 is in the flattened state and improving the user experience.

[0131] In this embodiment, the directions of the first stopping surface 153, the second stopping surface 23, the third stopping surface 163, and the fourth stopping surface 26 are all perpendicular to the X direction. The direction of the abutting force between the first stopping surface 153 and the second stopping surface 23, and the direction of the abutting force between the third stopping surface 163 and the fourth stopping surface 26 are both parallel or approximately parallel to the direction in which the user squeezes the play. That is, the stopping force direction of the rotating mechanism 100 is parallel to the direction in which the user squeezes the play when using the foldable electronic device 1000, thereby improving the stopping accuracy of the rotating mechanism 100 and the user experience. Moreover, in this embodiment, the rotating mechanism 100 realizes stopping through the abutment between surfaces, which can increase the stopping area, further improving the stopping accuracy of the rotating structure and thus the user experience.

[0132] Moreover, in this embodiment, the squeezing force applied by the user to the rotating mechanism 100 can be transferred to the first stopping surface 153 and the third stopping surface 163. The reaction force of the base 10 on the first main swing arm 21 is located at the second stopping surface 23, and the reaction force on the second main swing arm 24 is located at the fourth stopping surface 26, avoiding the weak areas of the main swing arm 20, thereby optimizing the force condition of the main swing arm 20, preventing the main swing arm 20 from being damaged due to the force applied by the base 10 to the main swing arm 20, and improving the reliability and service life of the rotating mechanism 100.

[0133] In addition, in this embodiment, by providing a first guide rail 172 on the base 10, a first groove 227 on the first main swing arm 21, and installing the first guide rail 172 in the first groove 227, the first main swing arm 21 can rotate relative to the base 10 along the first guide rail 172, thereby improving the stability of the rotation of the first main swing arm 21, avoiding the first main swing arm 21 deviating from the preset path during rotation, and further improving the stopping effect and stopping accuracy between the second stopping surface 23 and the first stopping surface 153. By providing a second guide rail 174 on the base 10, a second groove 257 on the second main swing arm 24, and installing the second guide rail 174 in the second groove 257, the second main swing arm 24 can rotate relative to the base 10 along the second guide rail 174, thereby improving the stability of the rotation of the second main swing arm 24, avoiding the second main swing arm 24 deviating from the preset path during rotation, and further improving the stopping effect and stopping accuracy between the fourth stopping surface 26 and the third stopping surface 163.

[0134] In one implementation, when the rotating mechanism 100 is in the flattened state, the first stopping surface 153 and the second stopping surface 23 are in interference fit. The interference amount between the first stopping surface 153 and the second stopping surface 23 is 0 to 0.1 mm. In some implementations, the interference amount between the first stopping surface 153 and the second stopping surface 23 is 0 to 0.04 mm. The so-called "interference fit" here means that the first stopping surface 153 and the second stopping surface 23 abut and squeeze each other. The deformation amount generated by the mutual extrusion difference between the first stopping surface 153 and the second stopping surface 23 is the interference amount. The "interference amount" here is the sum of the deformation amounts of the first stopping surface 153 and the second stopping surface 23. In this embodiment, by making the first stopping surface 153 and the second stopping surface 23 in interference fit, a pressing fit between the first stopping surface 153 and the second stopping surface 23 can be achieved, thereby further preventing the first main swing arm 21 from moving in the X direction towards the base 10, further improving the stopping accuracy of the rotating mechanism 100, reducing the play when the rotating mechanism 100 is in the flattened state, improving the reliability of the display screen 300 of the foldable electronic device 1000, and enhancing the user experience.

[0135] When the rotating mechanism 100 is in the flattened state, the third stop surface 163 and the fourth stop surface 26 are in interference fit. The interference amount between the third stop surface 163 and the fourth stop surface 26 is 0 to 0.1 mm. In some embodiments, the interference amount between the third stop surface 163 and the fourth stop surface 26 is 0 to 0.04 mm. Here, the "interference amount" is the sum of the deformation amounts of the third stop surface 163 and the fourth stop surface 26. In this embodiment, by making the third stop surface 163 and the fourth stop surface 26 in interference fit, a pressing fit between the third stop surface 163 and the fourth stop surface 26 can be achieved, thereby further preventing the second main swing arm 24 from moving in the X direction towards the base 10, and further reducing the play when the rotating mechanism 100 is in the flattened state, improving the user experience.

[0136] In one embodiment, the rotating mechanism 100 includes a wear-resistant layer. The wear-resistant layer can be a metal material or a polymer material. Exemplarily, the wear-resistant layer is polytetrafluoroethylene. In this embodiment, the first stop surface 153, the second stop surface 23, the third stop surface 163, and the fourth stop surface 26 are all provided with a wear-resistant layer. The wear-resistant layer is formed by physical vapor deposition. In other embodiments, the wear-resistant layer can also be formed by other coating processes. In this embodiment, by providing a wear-resistant layer on the stop surface, the wear resistance of the stop surface can be improved, thereby improving the stop effect between the first stop surface 153 and the second stop surface 23, and the stop effect between the third stop surface 163 and the fourth stop surface 26, and further improving the service life of the rotating mechanism 100 and the stop accuracy of the rotating mechanism 100 during the entire life cycle.

[0137] In some other embodiments, the wear-resistant layer can be provided on one of the first stop surface 153, the second stop surface 23, the third stop surface 163, and the fourth stop surface 26. Alternatively, the wear-resistant layer can also be provided on two or three of the first stop surface 153, the second stop surface 23, the third stop surface 163, and the fourth stop surface 26.

[0138] Please refer to Figure 12 、 Figure 13 and Figure 14 , Figure 12 is Figure 5 a partial structural schematic diagram of the rotating mechanism 100 shown in the second embodiment, Figure 13 is Figure 12 a structural schematic diagram of the bracket 12 in the rotating mechanism 100 shown, Figure 14 is Figure 13 an exploded structural schematic diagram of the bracket 12 shown from another angle.

[0139] The base 10 in the rotating mechanism 100 shown in this embodiment is connected to Figure 7The base 10 shown is different in that:

[0140] In this embodiment, the first stop surface 153 of the support plate 13 is located between the two sub-arc surfaces of the first arc surface 152 and faces the first side surface 143. The first stop surface 153 and the first guide rail 172 are arranged side by side in the Z direction, and the first stop surface 153 is located on the positive Z-axis side of the first guide rail 172. The top surface of the first guide rail 172 is a plane and is flush with the top surface 141 of the bracket 12 for jointly supporting the display screen 300. The bottom surface of the first guide rail 172 is arc-shaped for cooperating with the first main swing arm 21. And the bottom surface of the first guide rail 172 is connected to the first stop surface 153. The bottom surface of the first slide rail 171 is a plane and is flush with the bottom surface 142 of the bracket 12. Or, there may also be a small height difference between the bottom surface of the first slide rail 171 and the bottom surface 142 of the support plate 13. The top surface of the first slide rail 171 is arc-shaped and forms a first sliding groove 131. The first sliding groove 131 is used for installing the first main swing arm 21.

[0141] The third stop surface 163 is located between the two sub-arc surfaces of the second arc surface 162 and faces the second side surface 144. The third stop surface 163 and the second guide rail 174 are arranged side by side in the Z direction, and the third stop surface 163 is located on the positive Z-axis side of the second guide rail 174. The top surface of the second guide rail 174 is a plane and is flush with the top surface 141 of the bracket 12 for jointly supporting the display screen 300. The bottom surface of the second guide rail 174 is arc-shaped for cooperating with the second main swing arm 24. And the bottom surface of the second guide rail 174 is connected to the third stop surface 163. The bottom surface of the second slide rail 173 is a plane and is flush with the bottom surface 142 of the bracket 12. The top surface of the second slide rail 173 is arc-shaped and forms a second sliding groove 132. The second sliding groove 132 is used for installing the second main swing arm 24.

[0142] Please refer to Figure 15 and Figure 16 , Figure 15 is Figure 12 an enlarged structural schematic diagram of the main swing arm 20 in the rotation mechanism 100 shown, Figure 16 is Figure 15 an enlarged structural schematic diagram of the main swing arm 20 shown from another angle.

[0143] The main swing arm 20 in the rotation mechanism 100 shown in this embodiment is different from Figure 8 the main swing arm 20 shown in that:

[0144] In this embodiment, the first main swing arm 21 further includes two first sliders 214. The two first sliders 214 are respectively fixed to the opposite sides of the first rotating body 22 along the Y direction. The top surface of the first slider 214 is flush with the first supporting surface 223 and is used to jointly support the display screen 300. The bottom surface of the first slider 214 is arc-shaped and is used to cooperate with the first slide rail 171. The first end 221 is provided with a first avoidance notch 228. The first avoidance notch 228 penetrates through the first supporting surface 223 and the first rotating surface 224. The second stopping surface 23 is arranged on the bottom surface of the first avoidance notch 228 and faces the first end 221. In this embodiment, the second stopping surface 23 is perpendicular to the X direction. In some other embodiments, the included angle between the second stopping surface 23 and the X direction may also be slightly greater than 90 degrees or slightly less than 90 degrees. It can be understood that the second stopping surface 23 is the bottom wall surface of the first avoidance notch 228. The second stopping surface 23 is used to stop with the first stopping surface 153. The first rotating body 22 is provided with a first groove 227. The opening of the first groove 227 is located on the first supporting surface 223 and is communicated with the first avoidance notch 228. The first bottom wall 2271 of the first groove 227 is arc-shaped. The first bottom wall 2271 is connected to the second stopping surface 23. The first groove 227 is used to install the first guide rail 172.

[0145] In this embodiment, the second main swing arm 24 further includes two second sliders 244. The two second sliders 244 are respectively fixed to the opposite sides of the second rotating body 25 along the Y direction. The top surface of the second slider 244 is flush with the second supporting surface 253 and is used to jointly support the display screen 300. The bottom surface of the second slider 244 is arc-shaped and is used to cooperate with the second slide rail 173. The third end 251 is provided with a second avoidance notch 258. The second avoidance notch 258 penetrates through the second supporting surface 253 and the second rotating surface 254. The second avoidance notch 258 includes a fourth stopping surface 26. The fourth stopping surface 26 faces the third end 251. The fourth stopping surface 26 is used to stop with the third stopping surface 163. The second rotating body 25 is provided with a second groove 257. The opening of the second groove 257 is located on the second supporting surface 253 and is communicated with the second avoidance notch 258. The second bottom wall 2571 of the second groove 257 is arc-shaped. The second bottom wall 2571 is connected to the fourth stopping surface 26. The second groove 257 is used to install the second guide rail 174.

[0146] Please refer to Figure 17 , Figure 17 which Figure 12 is a schematic cross-sectional structure diagram of the shown rotating mechanism 100 along the B-B direction.

[0147] The first main swing arm 21 and the second main swing arm 24 are both installed on the base 10 and are respectively located on the opposite sides of the base 10 along the X-axis. Among them, the first rotating body 22 of the first main swing arm 21 is installed in the first rotating groove. The first rotating surface 224 faces the first inner wall 151 and can slide along the first arc surface 152 of the first inner wall 151. The first slider 214 is located in the first sliding groove 131 and can slide along the first sliding groove 131. The first guide rail 172 is located in the first groove 227, and the bottom surface of the first guide rail 172 faces and contacts the first bottom wall 2271 of the first groove 227. When the first main swing arm 21 rotates relative to the base 10, the first rotating body 22 can slide and rotate in the first rotating groove along the extension directions of the first slide rail 171 and the first guide rail 172.

[0148] The second rotating body 25 of the second main swing arm 24 is installed in the second rotating groove. The second rotating surface 254 faces the third inner wall 161 and can slide along the second arc surface 162 of the third inner wall 161. The second slider 244 is located in the second sliding groove 132 and can slide along the second sliding groove 132. The second guide rail 174 is located in the second groove 257, and the bottom surface of the second guide rail 174 faces and contacts the second bottom wall 2571 of the second groove 257. When the second main swing arm 24 rotates relative to the base 10, the second rotating body 25 can slide and rotate in the second rotating groove along the extension directions of the second slide rail 173 and the second guide rail 174.

[0149] When the rotating mechanism 100 switches from the folded state to the flattened state, the first main swing arm 21 rotates clockwise, the first rotating surface 224 slides along the first arc surface 152 towards the direction close to the first rotating groove, the first slider 214 slides along the first sliding groove 131 towards the direction close to the first rotating groove, the first bottom wall 2271 of the first groove 227 slides along the bottom surface of the first guide rail 172 towards the direction close to the first guide rail 172, the second stopping surface 23 moves towards the first stopping surface 153 and is stopped with the first stopping surface 153. The second main swing arm 24 rotates counterclockwise, the second rotating surface 254 slides along the second arc surface 162 towards the direction close to the second rotating groove, the second slider 244 slides along the second sliding groove 132 towards the direction close to the second rotating groove, the second bottom wall 2571 of the second groove 257 slides along the bottom surface of the second guide rail 174 towards the direction close to the second guide rail 174, the fourth stopping surface 26 moves towards the third stopping surface 163 and is stopped with the third stopping surface 163, so that the rotating mechanism 100 is in the flattened state.

[0150] When the rotating mechanism 100 is in the flattened state, the first main swing arm 21 and the second main swing arm 24 are relatively unfolded. The first slider 214 is located in the first sliding groove 131, the first guide rail 172 is located in the first groove 227, the second slider 244 is located in the first sliding groove 131, and the second guide rail 174 is located in the second groove 257. The top surfaces of the first support surface 223, the first guide rail 172, the second support surface 253, the second guide rail 174, and the support plate 13 are substantially in the same plane and are jointly used to support the display screen 300. The second stop surface 23 and the first stop surface 153 are opposite and locked to each other. The second stop surface 23 and the first stop surface 153 may be in exact contact or may abut against each other. The fourth stop surface 26 and the third stop surface 163 are opposite and locked to each other. The fourth stop surface 26 and the third stop surface 163 may be in exact contact or may abut against each other.

[0151] In this embodiment, by providing the first stop surface 153 in the first rotating groove and the second stop surface 23 on the first main swing arm 21, and when the rotating mechanism 100 is in the flattened state, the second stop surface 23 and the first stop surface 153 abut against each other, so that when the rotating mechanism 100 is in the flattened state, the second stop surface 23 can prevent the first main swing arm 21 from moving in the X direction towards the base 10, thereby reducing or even avoiding the play of the rotating mechanism 100 in the flattened state and improving the user experience; at the same time, it can also prevent the display screen 300 from having redundancy and arching, improve the service life of the display screen 300, and avoid the over-expansion of the foldable electronic device 1000 and damage to the display screen 300.

[0152] Moreover, in this embodiment, the second stop surface 23 is provided at the end of the first main swing arm 21, which can increase the area of the second stop surface 23, thereby increasing the contact area between the second stop surface 23 and the first stop surface 153 and increasing the stop area between the first main swing arm 21 and the base 10. Furthermore, it can further improve the stop effect and stop accuracy between the first main swing arm 21 and the base 10 and further reduce or even avoid the play of the rotating mechanism 100 in the flattened state.

[0153] At the same time, in this embodiment, by providing the third stop surface 163 in the second rotating groove and the fourth stop surface 26 on the second main swing arm 24, and when the rotating mechanism 100 is in the flattened state, the fourth stop surface 26 and the third stop surface 163 abut against each other, so that when the rotating mechanism 100 is in the flattened state, the second main swing arm 24 cannot continue to move in the X direction towards the base 10, thereby further reducing or even avoiding the play of the rotating mechanism 100 in the flattened state and improving the user experience.

[0154] Please refer to Figure 18 、 Figure 19 and Figure 20 ,Figure 18 is Figure 5 A partial structural schematic diagram of the rotating mechanism 100 shown in the third embodiment, Figure 19 is Figure 18 An exploded structural schematic diagram of the rotating mechanism 100 shown, Figure 20 is Figure 18 An exploded structural schematic diagram of the rotating mechanism 100 shown from another angle.

[0155] The base 10 in the rotating mechanism 100 shown in this embodiment is different from the base 10 shown in Figure 7 that:

[0156] In this embodiment, the first inner wall 151 of the support plate 13 includes a first arc surface 152 and a first stop surface 153. The first stop surface 153 includes a first sub-stop surface 155 and a third sub-stop surface 156. The first arc surface 152 includes two sub-arc surfaces. The two sub-arc surfaces are respectively located on the opposite sides of the first inner wall 151 in the Y direction. The third sub-stop surface 156 and the first sub-stop surface 155 are both connected between the two sub-arc surfaces of the first arc surface 152. The third sub-stop surface 156 and the first sub-stop surface 155 are arranged side by side in the Z direction. And, the first sub-stop surface 155 is located on the negative Z-axis side of the third sub-stop surface 156. The third sub-stop surface 156 and the first sub-stop surface 155 are both planes and face the first side surface 143. The plane where the first sub-stop surface 155 is located and the plane where the third sub-stop surface 156 is located both intersect with the X direction. In this embodiment, the first sub-stop surface 155 and the third stop surface 163 are both perpendicular to the X direction. The top surface of the first guide rail 172 has a height difference from the top surface 141 of the bracket 12, and the top surface of the first guide rail 172 is located on the positive Z-axis side of the top surface 141. The first sub-stop surface 155 is connected between the top surface 141 and the top surface of the first guide rail 172. The third sub-stop surface 156 is located on the opposite sides of the first guide rail 172 in the Y direction and is fixedly connected to the side surfaces of the first guide rail 172 in the Y direction.

[0157] In this embodiment, the second inner wall 154 further includes a second arc surface 162 and a third stop surface 163. The third stop surface 163 includes a fifth sub-stop surface 165 and a seventh sub-stop surface 166. The second arc surface 162 includes two sub-arc surfaces. The two sub-arc surfaces of the second arc surface 162 are respectively located on the opposite sides of the second inner wall 154 in the Y direction. Both the seventh sub-stop surface 166 and the fifth sub-stop surface 165 are connected between the two sub-arc surfaces of the second arc surface 162. The seventh sub-stop surface 166 and the fifth sub-stop surface 165 are arranged side by side in the Z direction. Moreover, the fifth sub-stop surface 165 is located on the negative Z-axis side of the seventh sub-stop surface 166. Both the seventh sub-stop surface 166 and the fifth sub-stop surface 165 are planes and face the second side surface 144. The plane where the seventh sub-stop surface 166 is located and the plane where the fifth sub-stop surface 165 is located are perpendicular to the X direction. The top surface of the second guide rail 174 has a height difference from the top surface 141 of the bracket 12, and the top surface of the second guide rail 174 is located on the positive Z-axis side of the top surface 141. The fifth sub-stop surface 165 is connected between the top surface 141 and the top surface of the second guide rail 174. The seventh sub-stop surface 166 is located on the opposite sides of the second guide rail 174 in the Y direction and is fixedly connected to the side surfaces of the second guide rail 174 in the Y direction.

[0158] The main swing arm 20 of the rotating mechanism 100 shown in this embodiment Figure 8 is different from the main swing arm 20 shown in

[0159] In this embodiment, a first avoidance notch 228 is provided at the first end 221 of the first main swing arm 21. The first avoidance notch 228 penetrates through the first support surface 223 and the first rotating surface 224. The second stop surface 23 includes a second sub-stop surface 231 and a fourth sub-stop surface 232. The second sub-stop surface 231 is provided on the bottom wall surface of the first avoidance notch 228. The second sub-stop surface 231 faces the first end 221. In this embodiment, the second sub-stop surface 231 is perpendicular to the X direction. It can be understood that the second sub-stop surface 231 is the bottom wall surface of the first avoidance notch 228. The opening of the first groove 227 is located on the first rotating surface 224 and is communicated with the first avoidance notch 228. The fourth sub-stop surface 232 is provided on the first side wall 2272 of the first groove 227 and faces the first end 221. The structure of the fourth sub-stop surface 232 in this embodiment is the same as Figure 8 the structure of the second stop surface 23 in the embodiment shown. The first bottom wall 2271 of the first groove 227 is arc-shaped. The first bottom wall 2271 is connected to the second sub-stop surface 231. That is, the second sub-stop surface 231 is connected between the first bottom wall 2271 and the first support surface 223. The second sub-stop surface 231 is used to stop with the first sub-stop surface 155 provided in the first rotating groove.

[0160] In this embodiment, a second avoidance notch 258 is provided at the third end 251 of the second main swing arm 24. The second avoidance notch 258 penetrates through the second support surface 253 and the second rotating surface 254. The fourth stop surface 26 includes a sixth sub-stop surface 261 and an eighth sub-stop surface 262. The sixth sub-stop surface 261 is provided on the bottom wall surface of the second avoidance notch 258. The sixth sub-stop surface 261 faces the third end 251. In this embodiment, the sixth sub-stop surface 261 is perpendicular to the X direction. The opening of the second groove 257 is located on the second rotating surface 254 and communicates with the second avoidance notch 258. The eighth sub-stop surface 262 is provided on the second side wall 2572 of the second groove 257 and faces the third end 251. The structure of the eighth sub-stop surface 262 in this embodiment is the same as that of the fourth stop surface 26 in the embodiment shown in Figure 8 . The second bottom wall 2571 of the second groove 257 is arc-shaped. The second bottom wall 2571 is connected to the sixth sub-stop surface 261. That is, the sixth sub-stop surface 261 is connected between the second bottom wall 2571 and the second support surface 253. The sixth sub-stop surface 261 is used to stop with the fifth sub-stop surface 165 provided in the second rotating groove.

[0161] Please refer to Figure 21 together with Figure 21 . Figure 18 is a schematic cross-sectional structure diagram of the shown rotating mechanism 100 along the C-C direction.

[0162] Both the first main swing arm 21 and the second main swing arm 24 are installed on the base 10 and are respectively located on opposite sides of the base 10 along the X axis. Among them, the first rotating body 22 of the first main swing arm 21 is installed in the first rotating groove. The first rotating surface 224 faces the bracket 12. The first slide rail 171 is located in the first arc-shaped groove 225, and the bottom surface of the first slide rail 171 is opposite to and in contact with the bottom wall of the first arc-shaped groove 225. The first guide rail 172 is located in the first groove 227, the top surface of the first guide rail 172 is opposite to and in contact with the first bottom wall 2271 of the first groove 227, and the two opposite side walls of the first guide rail 172 in the Y direction are respectively opposite to the two opposite first side walls 2272 of the first groove 227. When the first main swing arm 21 rotates relative to the base 10, the first rotating body 22 can slide and rotate in the first rotating groove along the extending directions of the first slide rail 171 and the first guide rail 172.

[0163] The second rotating body 25 of the second main swing arm 24 is installed in the second rotating groove. The second rotating surface 254 faces the bracket 12. The second slide rail 173 is located in the second arc-shaped groove 255, and the bottom surface of the second slide rail 173 faces and contacts the bottom wall of the second arc-shaped groove 255. The second guide rail 174 is located in the second groove 257, the top surface of the second guide rail 174 faces and contacts the second bottom wall 2571 of the second groove 257, and the opposite two side walls of the second guide rail 174 in the Y direction are respectively opposite to the opposite two second side walls 2572 of the second groove 257. When the second main swing arm 24 rotates relative to the base 10, the second rotating body 25 can slide and rotate in the second rotating groove along the extending directions of the second slide rail 173 and the second guide rail 174.

[0164] When the rotating mechanism 100 switches from the folded state to the flattened state, the first main swing arm 21 rotates clockwise, the first rotating surface 224 slides along the first arc surface 152 towards the direction close to the first rotating groove, the bottom wall of the first arc-shaped groove 225 slides along the bottom surface of the first slide rail 171 towards the direction close to the first rotating groove, the first bottom wall 2271 of the first groove 227 slides along the top surface of the first guide rail 172 towards the direction close to the first guide rail 172, the fourth sub-stop surface 232 moves towards the third sub-stop surface 156 and they stop each other, and the second sub-stop surface 231 moves towards the first sub-stop surface 155 and they stop each other. The second main swing arm 24 rotates counterclockwise, the second rotating surface 254 slides along the second arc surface 162 towards the direction close to the second rotating groove, the bottom wall of the second arc-shaped groove 255 slides along the bottom surface of the second slide rail 173 towards the direction close to the second rotating groove, the second bottom wall 2571 of the second groove 257 slides along the top surface 141 of the second guide rail 174 towards the direction close to the second guide rail 174, the eighth sub-stop surface 262 moves towards the seventh sub-stop surface 166 and they stop each other, and the sixth sub-stop surface 261 moves towards the fifth sub-stop surface 165 and they stop each other, so that the rotating mechanism 100 is in the flattened state.

[0165] When the rotating mechanism 100 is in the flattened state, the first main swing arm 21 and the second main swing arm 24 are relatively unfolded. One end of the first guide rail 172 facing away from the first inner wall 151 is located in the first avoidance hole 226, and one end of the second guide rail 174 facing away from the third inner wall 161 is located in the second avoidance hole 256. The first support surface 223, the second support surface 253 and the top surface 141 of the support plate 13 are substantially in the same plane and are jointly used to support the display screen 300. The fourth sub-stop surface 232 and the third sub-stop surface 156 are opposite to each other and are locked with each other. The fourth sub-stop surface 232 and the third sub-stop surface 156 may just touch each other or may abut against each other. The second sub-stop surface 231 and the first sub-stop surface 155 are opposite to each other and are locked with each other. The second sub-stop surface 231 and the first sub-stop surface 155 may just touch each other or may abut against each other. The eighth sub-stop surface 262 and the seventh sub-stop surface 166 are opposite to each other and are locked with each other. The eighth sub-stop surface 262 and the seventh sub-stop surface 166 may just touch each other or may abut against each other. The sixth sub-stop surface 261 and the fifth sub-stop surface 165 are opposite to each other and are locked with each other. The sixth sub-stop surface 261 and the fifth sub-stop surface 165 may just touch each other or may abut against each other.

[0166] In this embodiment, by providing the first sub-stop surface 155 on the support plate 13 and the second sub-stop surface 231 on the first main swing arm 21, when the rotating mechanism 100 is in the flattened state, the first main swing arm 21 and the base 10 are stopped not only by the fourth sub-stop surface 232 and the third sub-stop surface 156, but also by the second sub-stop surface 231 and the first sub-stop surface 155, so as to further prevent the first main swing arm 21 from continuing to move in the X direction towards the base 10, improve the stopping effect and stopping accuracy, further reduce or even avoid the virtual position of the rotating mechanism 100 in the flattened state, and improve the user experience; at the same time, it can also further avoid the redundancy and reverse arch of the display screen 300, improve the service life of the display screen 300, and avoid excessive unfolding of the foldable electronic device 1000 and damage to the display screen 300.

[0167] Moreover, in this embodiment, by providing the fifth sub-stop surface 165 on the support plate 13 and the sixth sub-stop surface 261 on the second main swing arm 24, when the rotating mechanism 100 is in the flattened state, the second main swing arm 24 and the base 10 are stopped not only by the seventh sub-stop surface 166 and the eighth sub-stop surface 262, but also by the fifth sub-stop surface 165 and the sixth sub-stop surface 261, so as to further prevent the second main swing arm 24 from continuing to move in the X direction towards the base 10, improve the stopping effect and stopping accuracy, further reduce or even avoid the virtual position of the rotating mechanism 100 in the flattened state, and improve the user experience.

[0168] Please refer to Figure 22 、 Figure 23 andFigure 24 , Figure 22 is Figure 5 a partial structural schematic diagram of the rotating mechanism 100 shown in the fourth embodiment, Figure 23 is Figure 22 an exploded structural schematic diagram of the rotating mechanism 100 shown, Figure 24 is Figure 22 an exploded structural schematic diagram of the rotating mechanism 100 shown from another angle.

[0169] The base 10 in the rotating mechanism 100 shown in this embodiment is different from the Figure 7 base 10 shown in that:

[0170] In this embodiment, the first inner wall 151 of the support plate 13 includes a first stop surface 153. The first stop surface 153 includes a third sub-stop surface 156 and a first sub-stop surface 155. The first sub-stop surface 155 includes two parts. The two parts of the first sub-stop surface 155 are respectively located on the opposite sides of the first inner wall 151 in the Y direction. The third sub-stop surface 156 is connected between the two parts of the first sub-stop surface 155. The third sub-stop surface 156 and the first sub-stop surface 155 are both planes and both face the first side surface 143. The planes where the first sub-stop surface 155 and the third sub-stop surface 156 are located both intersect with the X direction. In this embodiment, both the first sub-stop surface 155 and the third sub-stop surface 156 are perpendicular to the X direction.

[0171] In this embodiment, the second inner wall 154 includes a third stop surface 163. The third stop surface 163 includes a seventh sub-stop surface 166 and a fifth sub-stop surface 165. The fifth sub-stop surface 165 includes two parts. The two parts of the fifth sub-stop surface 165 are respectively located on the opposite sides of the second inner wall 154 in the Y direction. The seventh sub-stop surface 166 is connected between the two parts of the fifth sub-stop surface 165. The seventh sub-stop surface 166 and the fifth sub-stop surface 165 are both planes and both face the second side surface 144. The planes where the fifth sub-stop surface 165 and the seventh sub-stop surface 166 are located both intersect with the X direction. In this embodiment, both the fifth sub-stop surface 165 and the seventh sub-stop surface 166 are perpendicular to the X direction.

[0172] The main swing arm 20 of the rotating mechanism 100 shown in this embodiment is different from the Figure 8 main swing arm 20 shown in that:

[0173] In this embodiment, the second stop surface 23 includes a second sub-stop surface 231 and a fourth sub-stop surface 232. The second sub-stop surface 231 is provided on the surface of the first end 221 facing away from the second end 222. The second sub-stop surface 231 is a plane, and the plane where the second sub-stop surface 231 is located is perpendicular to the X direction. It can be understood that the second sub-stop surface 231 is the end surface of the first rotating body 22 in the negative X-axis direction. The fourth sub-stop surface 232 is provided on the first side wall 2272 of the first groove 227 and faces the first end 221. The structure of the fourth sub-stop surface 232 in this embodiment is the same as that of Figure 8 the second stop surface 23 in the illustrated embodiment. The orientation of the second sub-stop surface 231 is the same as that of the fourth sub-stop surface 232. The second sub-stop surface 231 is used to stop with the first sub-stop surface 155, and the fourth sub-stop surface 232 is used to stop with the third sub-stop surface 156. That is, the second sub-stop surface 231 and the fourth sub-stop surface 232 are jointly used to abut against the base 10.

[0174] In this embodiment, the fourth stop surface 26 of the second main swing arm 24 includes a sixth sub-stop surface 261 and an eighth sub-stop surface 262. The sixth sub-stop surface 261 is provided on the bottom wall surface of the second avoidance notch 258. The sixth sub-stop surface 261 is provided on the surface of the second end 222 facing away from the second end 222. The sixth sub-stop surface 261 is a plane, and the plane where the sixth sub-stop surface 261 is located is perpendicular to the X direction. It can be understood that the sixth sub-stop surface 261 is the end surface of the second rotating body 25 in the negative X-axis direction. The eighth sub-stop surface 262 is provided on the second side wall 2572 of the second groove 257 and faces the third end 251. The structure of the eighth sub-stop surface 262 in this embodiment is the same as that of Figure 8 the fourth stop surface 26 in the illustrated embodiment. The orientation of the sixth sub-stop surface 261 is the same as that of the eighth sub-stop surface 262. The sixth sub-stop surface 261 is used to stop with the fifth sub-stop surface 165, and the eighth sub-stop surface 262 is used to stop with the seventh sub-stop surface 166. That is, the sixth sub-stop surface 261 and the eighth sub-stop surface 262 are jointly used to abut against the base 10.

[0175] Please refer to Figure 25 together with Figure 25 which is Figure 22 a schematic cross-sectional structure diagram of the illustrated rotating mechanism 100 along the D-D direction.

[0176] The first main swing arm 21 and the second main swing arm 24 are both installed on the base 10 and are respectively located on the opposite sides of the base 10 in the X-axis direction. Among them, the first rotating body 22 of the first main swing arm 21 is installed in the first rotating groove. The first rotating surface 224 faces the bracket 12. The first slide rail 171 is located in the first arc-shaped groove 225, and the bottom surface of the first slide rail 171 faces and contacts the bottom wall of the first arc-shaped groove 225. The first guide rail 172 is located in the first groove 227, the top surface of the first guide rail 172 faces and contacts the first bottom wall 2271 of the first groove 227, and the opposite two side walls of the first guide rail 172 in the Y direction respectively face the opposite two first side walls 2272 of the first groove 227. When the first main swing arm 21 rotates relative to the base 10, the first rotating body 22 can slide and rotate in the first rotating groove along the extending directions of the first slide rail 171 and the first guide rail 172.

[0177] The second rotating body 25 of the second main swing arm 24 is installed in the second rotating groove. The second rotating surface 254 faces the bracket 12. The second slide rail 173 is located in the second arc-shaped groove 255, and the bottom surface of the second slide rail 173 faces and contacts the bottom wall of the second arc-shaped groove 255. The second guide rail 174 is located in the second groove 257, the top surface of the second guide rail 174 faces and contacts the second bottom wall 2571 of the second groove 257, and the opposite two side walls of the second guide rail 174 in the Y direction respectively face the opposite two second side walls 2572 of the second groove 257. When the second main swing arm 24 rotates relative to the base 10, the second rotating body 25 can slide and rotate in the second rotating groove along the extending directions of the second slide rail 173 and the second guide rail 174.

[0178] When the rotating mechanism 100 switches from the folded state to the flattened state, the first main swing arm 21 rotates clockwise, the bottom wall of the first arc-shaped groove 225 slides along the bottom surface of the first slide rail 171 towards the direction close to the first rotating groove, the first bottom wall 2271 of the first groove 227 slides along the top surface of the first guide rail 172 towards the direction close to the first guide rail 172, the fourth sub-stop surface 232 moves towards the third sub-stop surface 156 and stops each other, and the second sub-stop surface 231 moves towards the first sub-stop surface 155 and stops each other. The second main swing arm 24 rotates counterclockwise, the bottom wall of the second arc-shaped groove 255 slides along the bottom surface of the second slide rail 173 towards the direction close to the second rotating groove, the second bottom wall 2571 of the second groove 257 slides along the top surface 141 of the second guide rail 174 towards the direction close to the second guide rail 174, the eighth sub-stop surface 262 moves towards the seventh sub-stop surface 166 and stops each other, and the sixth sub-stop surface 261 moves towards the fifth sub-stop surface 165 and stops each other, so that the rotating mechanism 100 is in the flattened state.

[0179] When the rotating mechanism 100 is in the flattened state, one end of the first guide rail 172 facing away from the first inner wall 151 is located in the first avoidance hole 226, and one end of the second guide rail 174 facing away from the third inner wall 161 is located in the second avoidance hole 256. The first support surface 223, the second support surface 253 and the top surface 141 of the support plate 13 are substantially in the same plane and are jointly used to support the display screen 300. The fourth sub-stop surface 232 and the third sub-stop surface 156 are opposite to each other and are locked with each other. The fourth sub-stop surface 232 and the third sub-stop surface 156 may be in exact contact with each other or may be abutted against each other. The second sub-stop surface 231 and the first sub-stop surface 155 are opposite to each other and are locked with each other. The second sub-stop surface 231 and the first sub-stop surface 155 may be in exact contact with each other or may be abutted against each other. The eighth sub-stop surface 262 and the seventh sub-stop surface 166 are opposite to each other and are locked with each other. The eighth sub-stop surface 262 and the seventh sub-stop surface 166 may be in exact contact with each other or may be abutted against each other. The sixth sub-stop surface 261 and the fifth sub-stop surface 165 are opposite to each other and are locked with each other. The sixth sub-stop surface 261 and the fifth sub-stop surface 165 may be in exact contact with each other or may be abutted against each other.

[0180] In this embodiment, by providing the first sub-stop surface 155 on the support plate 13 and the second sub-stop surface 231 on the first main swing arm 21, when the rotating mechanism 100 is in the flattened state, the first main swing arm 21 and the support plate 13 are stopped not only by the third sub-stop surface 156 and the fourth sub-stop surface 232, but also by the first sub-stop surface 155 and the second sub-stop surface 231, so as to further prevent the first main swing arm 21 from continuing to move in the X direction towards the base 10, improve the stopping effect and stopping accuracy, further reduce or even avoid the virtual position of the rotating mechanism 100 in the flattened state, and improve the user experience; at the same time, it can also further prevent the display screen 300 from being redundant and arching, improve the service life of the display screen 300, and avoid the over-expansion of the foldable electronic device 1000 and damage to the display screen 300.

[0181] Moreover, in this embodiment, by providing the fifth sub-stop surface 165 on the support plate 13 and the sixth sub-stop surface 261 on the second main swing arm 24, when the rotating mechanism 100 is in the flattened state, the second main swing arm 24 and the support plate 13 are stopped not only by the seventh sub-stop surface 166 and the eighth sub-stop surface 262, but also by the fifth sub-stop surface 165 and the sixth sub-stop surface 261, so as to further prevent the second main swing arm 24 from continuing to move in the X direction towards the base 10, improve the stopping effect and stopping accuracy, further reduce or even avoid the virtual position of the rotating mechanism 100 in the flattened state, and improve the user experience.

[0182] Meanwhile, in this embodiment, by disposing the first sub-stop surface 155 on the end surface of the first main swing arm 21, the area of the first sub-stop surface 155 can be increased, thereby increasing the stop area between the first main swing arm 21 and the support plate 13. Furthermore, the stop effect and stop accuracy between the first main swing arm 21 and the support plate 13 can be further improved, and the play when the rotating mechanism 100 is in the flattened state can be further reduced or even avoided.

[0183] In this embodiment, by disposing the fifth sub-stop surface 165 on the end surface of the second main swing arm 24, the area of the fifth sub-stop surface 165 can be increased, thereby increasing the stop area between the second main swing arm 24 and the support plate 13. Furthermore, the stop effect and stop accuracy between the second main swing arm 24 and the support plate 13 can be further improved, and the play when the rotating mechanism 100 is in the flattened state can be further reduced or even avoided.

[0184] It should be noted that Figure 5 the structure of the main swing arm 20 in any one of the rotating components 1 in the shown rotating mechanism 100 can be the same as that of the main swing arm 20 in any one of the above four embodiments, and the structure of the support plate 13 can be adjusted according to the structure of the adopted main swing arm 20.

[0185] Please refer to Figure 26 , Figure 26 which is Figure 5 a schematic structural view of the fixing frame 30 in the first rotating component 101 of the shown rotating mechanism 100.

[0186] The fixing frame 30 in the first rotating component 101 includes a first fixing frame 31 and a second fixing frame 32. The first fixing frame 31 is a long strip-shaped plate structure with a thickness. The first fixing frame 31 is provided with a first guiding chute 311, a first shaft hole 312, a first chute 313, and a third shaft hole 314. The first guiding chute 311 is arc-shaped. The first guiding chute 311 is used for sliding connection with the first pressing plate 41. In this embodiment, there are three first guiding chutes 311. The three first guiding chutes 311 are arranged at intervals along the length direction (Y direction) of the first fixing frame 31. The extending direction of the first shaft hole 312 is parallel to the X direction. The first shaft hole 312 is used for the rotational connection with the first main swing arm 21 in the first rotating component 101. The third shaft hole 314 is arranged at an interval from the first shaft hole 312. The extending direction of the third shaft hole 314 is parallel to the X direction. The third shaft hole 314 is used for the rotational connection with the third main swing arm 27 in the first rotating component 101. The first chute 313 is disposed on the top surface of the first fixing frame 31. The extending direction of the first chute 313 is parallel to the width direction (X direction) of the first fixing frame 31. The first chute 313 is used for sliding connection with the first synchronous swing arm 51.

[0187] The second fixing bracket 32 and the first fixing bracket 31 are symmetric structures, and the second fixing bracket 32 and the first fixing bracket 31 are mirror symmetric about the reference plane P. The second fixing bracket 32 is provided with a second guiding chute 321, a second shaft hole 322, a second chute 323 and a fourth shaft hole 324. The second guiding chute 321 is used for sliding connection with the second pressing plate 42. In this embodiment, there are three second guiding chutes 321. The three second guiding chutes 321 are arranged at intervals along the length direction (Y direction) of the second fixing bracket 32. The extending direction of the second shaft hole 322 is parallel to the X direction. The second shaft hole 322 is used for rotational connection with the second main swing arm 24 in the first rotating assembly 101. The fourth shaft hole 324 is arranged at an interval from the second shaft hole 322. The extending direction of the fourth shaft hole 324 is parallel to the X direction. The fourth shaft hole 324 is used for rotational connection with the fourth main swing arm 28 in the first rotating assembly 101. The second chute 323 is arranged on the top surface of the second fixing bracket 32. The extending direction of the second chute 323 is parallel to the width direction (X direction) of the second fixing bracket 32. The second chute 323 is used for sliding connection with the second synchronous swing arm 52.

[0188] Please refer to Figure 27 , Figure 27 is Figure 5 a partial structural schematic diagram of the pressing plate 40 in the shown rotating mechanism 100.

[0189] The pressing plate 40 includes a first pressing plate 41 and a second pressing plate 42. The first pressing plate 41 includes a first body 411 and a first guiding slider 412. The first body 411 is a long strip plate-like structure. The first guiding slider 412 is arc-shaped. The structure of the first guiding slider 412 matches the structure of the first guiding chute 311. The first guiding slider 412 is fixed to the bottom surface of the first body 411. The first guiding slider 412 is used for being installed in the first guiding chute 311 to realize rotational and sliding connection with the first fixing bracket 31. In this embodiment, there are three first guiding sliders 412. The three first guiding sliders 412 are arranged at intervals along the length direction (Y direction) of the first body 411. Moreover, the three first guiding sliders 412 and the three first guiding chutes 311 are arranged in one-to-one correspondence.

[0190] The first body 411 is provided with a first sliding hole 413 and a third sliding hole 414. The first sliding hole 413 is provided on the bottom surface of the first body 411. The depth direction of the first sliding hole 413 is parallel to the Y direction. The first sliding hole 413 is used to realize the rotational and sliding connection between the first pressing plate 41 and the first main swing arm 21. In this embodiment, the first sliding hole 413 is in a curved water droplet shape. The shape of the first sliding hole 413 mentioned here refers to the shape of the cross-section of the first sliding hole 413. Among them, the cross-section direction is perpendicular to the depth direction of the first sliding hole 413. In other embodiments, the first sliding hole 413 can also be a long strip shape or other special-shaped structures. The shape of the first sliding hole 413 is not specifically limited here, as long as the first sliding hole 413 can realize the rotation and sliding of the first pressing plate 41 and the first main swing arm 21.

[0191] The shape of the third sliding hole 414 is the same as or similar to the shape of the first sliding hole 413. The third sliding hole 414 and the first sliding hole 413 are arranged at intervals. The third sliding hole 414 is used to realize the sliding and rotational connection between the first pressing plate 41 and the third main swing arm 27.

[0192] The second pressing plate 42 and the first pressing plate 41 are symmetric structures, and the second pressing plate 42 and the first pressing plate 41 are mirror-symmetric about the reference plane P. The second pressing plate 42 includes a second body 421 and a second guiding slider 422. The second body 421 is a long strip-shaped plate structure. The second guiding slider 422 is arc-shaped. The structure of the second guiding slider 422 matches the structure of the second guiding chute 321. The second guiding slider 422 is fixed to the bottom surface of the second body 421. The second guiding slider 422 is used to be installed in the second guiding chute 321 to realize the rotational and sliding connection with the second fixing bracket 32. In this embodiment, there are three second guiding sliders 422. The three second guiding sliders 422 are arranged at intervals along the length direction (Y direction) of the second body 421. And, the three second guiding sliders 422 and the three second guiding chutes 321 are arranged in one-to-one correspondence.

[0193] The second body 421 is provided with a second sliding hole 423 and a fourth sliding hole 424. The second sliding hole 423 is provided on the bottom surface of the second body 421. The depth direction of the second sliding hole 423 is parallel to the Y direction. The second sliding hole 423 is used to realize the rotational and sliding connection between the second main swing arm 24 and the second pressing plate 42. In this embodiment, the second sliding hole 423 is in a curved water droplet shape. The shape of the fourth sliding hole 424 is the same as or similar to the shape of the second sliding hole 423. The fourth sliding hole 424 and the second sliding hole 423 are arranged at intervals. The fourth sliding hole 424 is used to realize the sliding and rotational connection between the second pressing plate and the third main swing arm 27.

[0194] Please refer to Figure 5, the first fixing bracket 31, the first pressing plate 41, the first main swing arm 21, and the third main swing arm 27 are all located on the positive X-axis side of the base 10. The first pressing plate 41 is mounted on the first fixing bracket 31 and can slide and rotate relative to the first fixing bracket 31. The bottom surface of the first pressing plate 41 faces the top surface of the first fixing bracket 31. The first guiding slider 412 is located in the first guiding chute 311 and can slide along the first guiding chute 311. The first rotating body 22 of the first main swing arm 21 is mounted in the first rotating groove, and the first shaft seat 211 faces the first fixing bracket 31. The rotating mechanism 100 further includes a first rotating shaft a and a second rotating shaft b. The first rotating shaft a is mounted in the first shaft hole 312 and can rotate in the first shaft hole 312. The second rotating shaft b is mounted in the first sliding hole 413. The second rotating shaft b can rotate around its own axis in the first sliding hole 413 and can also slide in the first sliding hole 413. The third main swing arm 27 is arranged at an interval from the first main swing arm 21. The third main swing arm 27 is rotatably connected to the first fixing bracket 31 and is rotatably and slidably connected to the first pressing plate 41. The third main swing arm 27 is mounted in the third rotating groove and can rotate and slide in the third rotating groove. The connection manners of the third main swing arm 27 with the first fixing bracket 31 and the first pressing plate 41 can all refer to those of the first main swing arm 21 and will not be elaborated here. The first fixing bracket 31 is fixedly connected to the first housing 210.

[0195] , the second fixing bracket 32, the second pressing plate 42, the second main swing arm 24, and the fourth main swing arm 28 are all located on the negative X-axis side of the base 10. The second pressing plate 42 is mounted on the second fixing bracket 32 and can slide and rotate relative to the second fixing bracket 32. The bottom surface of the second pressing plate 42 faces the top surface of the second fixing bracket 32. The second guiding slider 422 is located in the second guiding chute 321 and can slide along the second guiding chute 321. The second rotating body 25 of the second main swing arm 24 is mounted in the second rotating groove, and the second shaft seat 241 faces the second fixing bracket 32. The rotating mechanism 100 further includes a third rotating shaft c and a fourth rotating shaft d. The third rotating shaft c is mounted in the second shaft hole 322 and can rotate in the second shaft hole 322. The third rotating shaft c is mounted in the second sliding hole 423, and the second rotating shaft can rotate around the axis of the third rotating shaft c in the second sliding hole 423 and can also slide in the second sliding hole 423. The fourth main swing arm 28 is arranged at an interval from the second main swing arm 24. The fourth main swing arm 28 is rotatably connected to the second fixing bracket 32 and is rotatably and slidably connected to the second pressing plate 42. The fourth main swing arm 28 is mounted in the fourth rotating groove and can rotate and slide in the fourth rotating groove. The connection manners of the fourth main swing arm 28 with the second fixing bracket 32 and the second pressing plate 42 can all refer to those of the second main swing arm 24 and will not be elaborated here. The second fixing bracket 32 is fixedly connected to the second housing 220.

[0196] The relative rotation of the first housing 210 with respect to the base 10 can drive the first fixing frame 31 to rotate relative to the base 10, thereby driving the first pressing plate 41 to rotate relative to the base 10, and driving the first pressing plate 41 to rotate and slide relative to the first fixing frame 31 along the first guiding chute 311. The relative rotation of the first fixing frame 31 with respect to the base 10 also drives the first main swing arm 21 to rotate, and causes the first rotating body 22 to rotate and slide in the first rotating groove. The first rotating shaft a rotates in the first shaft hole 312, and the second rotating shaft b rotates and slides in the first sliding hole 413.

[0197] The relative rotation of the second housing 220 with respect to the base 10 can drive the second fixing frame 32 to rotate relative to the base 10, thereby driving the second pressing plate 42 to rotate relative to the base 10, and driving the second pressing plate 42 to rotate and slide relative to the second fixing frame 32 along the second guiding chute 321. The relative rotation of the second fixing frame 32 with respect to the base 10 also drives the second main swing arm 24 to rotate, and causes the second rotating body 25 to rotate and slide in the second rotating groove. The third rotating shaft c rotates in the second shaft hole 322, and the fourth rotating shaft d rotates and slides in the second sliding hole 423.

[0198] Wherein, the rotation directions of the first housing 210 and the second housing 220 are opposite, the rotation directions of the first fixing frame 31 and the second fixing frame 32 are opposite, the rotation directions of the first pressing plate 41 and the second pressing plate 42 are opposite, and the rotation directions of the first main swing arm 21 and the second main swing arm 24 are opposite. For example, when the rotating mechanism 100 rotates from the flattened state to the folded state, the first fixing frame 31, the first pressing plate 41 and the first main swing arm 21 rotate counterclockwise, and the second fixing frame 32, the second pressing plate 42 and the second main swing arm 24 rotate clockwise. When the rotating mechanism 100 rotates from the folded state to the flattened state, the first fixing frame 31, the first pressing plate 41 and the first main swing arm 21 rotate clockwise, and the second fixing frame 32, the second pressing plate 42 and the second main swing arm 24 rotate counterclockwise.

[0199] In this embodiment, by providing the first fixing frame 31 and the second fixing frame 32, and fixing the first fixing frame 31 to the first housing 210 and the second fixing frame 32 to the second housing 220, the connection strength between the fixing frame 30 and the housing can be increased, and the stability of the rotation of the foldable electronic device 1000 can be improved.

[0200] Both the first pressing plate 41 and the second pressing plate 42 are disposed opposite to the display screen 300. That is, the orthographic projection of the display screen 300 on the first pressing plate 41 and the second pressing plate 42 completely covers or partially covers the first pressing plate 41 and the second pressing plate 42. The first pressing plate 41, the second pressing plate 42 and the support plate 13 jointly support the display screen 300, thereby increasing the connection stability of the display screen 300 to ensure good display of the display screen 300.

[0201] In this embodiment, the rotation of the first fixing frame 31 drives the rotation of the first pressing plate 41, and the rotation of the second fixing frame 32 drives the rotation of the second pressing plate 42, so as to realize the folding and unfolding of the display screen 300. In this embodiment, by providing a guiding chute on the first pressing plate 41 and an arc-shaped guiding slider on the first fixing frame 31, the first pressing plate 41 can slide in an arc relative to the first fixing frame 31; by providing a guiding chute on the second pressing plate 42 and an arc-shaped guiding slider on the second fixing frame 32, the second pressing plate 42 can slide in an arc relative to the second fixing frame 32. When the first fixing frame 31 and the second fixing frame 32 rotate, the first pressing plate 41 and the second pressing plate 42 rotate relative to each other, and the first pressing plate 41 slides in an arc relative to the first fixing frame 31, and the second pressing plate 42 slides in an arc relative to the second fixing frame 32. Furthermore, the included angle between the first pressing plate 41 and the second pressing plate 42 can be adjusted, so as to adapt to the folding angle of the foldable part of the display screen 300, so as to avoid the first pressing plate 41 and the second pressing plate 42 squeezing the display screen 300 when the rotating mechanism 100 is in the folded state. That is to say, when the rotating mechanism 100 is in the folded state, the included angle between the first fixing frame 31 and the second fixing frame 32 is different from the included angle between the first pressing plate 41 and the second pressing plate 42, and the included angle between the first pressing plate 41 and the second pressing plate 42 can be adjusted according to the bending angle of the display screen 300 to adapt to the bending of the display screen 300.

[0202] Please refer to Figure 28 , Figure 28 is Figure 6 a partial exploded structural schematic diagram of the rotating mechanism 100 shown in the figure.

[0203] The synchronization component 50 includes a first synchronization swing arm 51, a second synchronization swing arm 52, a synchronization gear 53 and a damping member 60. The synchronization gear 53 and the damping member 60 are both installed on the base 10. The first synchronization swing arm 51 and the second synchronization swing arm 52 are respectively located on opposite sides of the base 10 in the X direction, and are engaged with the synchronization gear 53 and simultaneously engaged with the damping member 60. When the first synchronization swing arm 51 rotates, it drives the synchronization gear 53 to rotate, thereby driving the second synchronization swing arm 52 to rotate, so as to realize the synchronous movement of the first synchronization swing arm 51 and the second synchronization swing arm 52. And when the first synchronization swing arm 51 and the second synchronization swing arm 52 rotate, they abut against the damping member 60, causing the damping member 60 to generate a damping force, thereby providing a damping force for the rotation of the rotating mechanism 100 and providing a damping feel for the user.

[0204] The synchronization component 50 further includes fixing rods 54. In this embodiment, there are two fixing rods 54. The two fixing rods 54 are respectively a first fixing rod 541 and a second fixing rod 542. The first fixing rod 541 and the second fixing rod 542 are arranged at intervals along the X direction. Moreover, the extending directions of the first fixing rod 541 and the second fixing rod 542 are both parallel to the Y direction and fixedly connected to the base 10.

[0205] The damping member 60 includes a baffle 61, a first damping plate 62, a second damping plate 63 and a damping spring 64. The first damping plate 62 is provided with a first hinge seat 621 and a second hinge seat 622. The first hinge seat 621 includes a plurality of protrusions and a plurality of recesses. The plurality of protrusions and the plurality of recesses are alternately arranged to form an annular structure. The second hinge seat 622 has the same or similar structure as the first hinge seat 621. The first hinge seat 621 and the second hinge seat 622 are arranged at intervals along the X direction. The second damping plate 63 is provided with a third hinge seat 631 and a fourth hinge seat 632. The third hinge seat 631 and the fourth hinge seat 632 are arranged at intervals along the X direction. The third hinge seat 631 and the fourth hinge seat 632 have the same or similar structure as the first hinge seat 621.

[0206] The baffle 61, the first damping plate 62 and the second damping plate 63 are all sleeved on the fixing rod 54 and arranged at intervals in sequence along the Y direction. The first damping plate 62 is located between the baffle 61 and the second damping plate 63. Moreover, both the baffle 61 and the second damping plate 63 are fixedly connected to the fixing rod 54. The first damping plate 62 is slidably connected to the fixing rod 54 and can move along the length direction of the fixing rod 54. The first hinge seat 621 and the second hinge seat 622 face the second damping plate 63, and the third hinge seat 631 and the fourth hinge seat 632 face the first damping plate 62. The damping spring 64 is installed between the baffle 61 and the first damping plate 62 and fixedly connected to the baffle 61 and the first damping plate 62.

[0207] In this embodiment, there are two synchronization gears 53. The two synchronization gears 53 are respectively a third gear 531 and a fourth gear 532. The third gear 531 and the fourth gear 532 are arranged side by side along the X direction and mesh with each other. The synchronization gear 53 is arranged between the two fixing rods 54 and rotatably connected to the second damping plate 63.

[0208] The first synchronous swing arm 51 includes a first sliding body 511, a first gear 512, and a first rotating column 513. The first sliding body 511 is in a plate-like structure. The first sliding body 511 is used to be installed in the first sliding groove 313 so that the first synchronous swing arm 51 is slidably connected to the first fixing bracket 31. The first rotating column 513 and the first gear 512 are arranged side by side along the width direction of the first sliding body 511 and are both connected to one end of the first synchronous swing arm 51. A first hinge body 514 is provided at one end of the first rotating column 513 facing away from the first gear 512. A third hinge body 515 is provided at one end of the first gear 512 facing away from the first rotating column 513. The structure of the first hinge body 514 matches the structure of the first hinge seat 621. The structure of the third hinge body 515 matches the structure of the third hinge seat 631. Both the first rotating column 513 and the first gear 512 are hollow structures, and the central axes of the first rotating column 513 and the first gear 512 coincide.

[0209] The first synchronous swing arm 51 is installed on the first fixing rod 541. The first gear 512 and the first rotating column 513 are sleeved on the outer periphery of the first fixing rod 541 and are located between the first damping baffle 61 and the second damping baffle 61. The first gear 512 meshes with the third gear 531, the first hinge body 514 is hinged to the first hinge seat 621, and the third hinge body 515 is hinged to the third hinge seat 631.

[0210] The second synchronous swing arm 52 includes a second sliding body 521, a second gear 522, and a second rotating column 523. The second sliding body 521 is in a plate-like structure. The second sliding body 521 is used to be installed in the second sliding groove 323 so that the second synchronous swing arm 52 is slidably connected to the second fixing bracket 32. The second rotating column 523 and the second gear 522 are arranged side by side along the width direction of the second sliding body 521 and are both connected to one end of the second synchronous swing arm 52. A second hinge body 524 is provided at one end of the second rotating column 523 facing away from the second gear 522. A fourth hinge body 525 is provided at one end of the second gear 522 facing away from the second rotating column 523. The structure of the second hinge body 524 matches the structure of the second hinge seat 622. The structure of the fourth hinge body 525 matches the structure of the fourth hinge seat 632. Both the second rotating column 523 and the second gear 522 are hollow structures, and the central axes of the second rotating column 523 and the second gear 522 coincide.

[0211] The second synchronous swing arm 52 is installed on the second fixing rod 542. The second gear 522 and the second rotating column 523 are sleeved on the outer periphery of the second fixing rod 542 and are located between the first damping baffle 61 and the second damping baffle 61. The second gear 522 meshes with the fourth gear 532, the second hinge body 524 is hinged to the second hinge seat 622, and the fourth hinge body 525 is hinged to the fourth hinge seat 632.

[0212] Please refer to... togetherFigure 5 and Figure 6 , the first synchronization component 501 is installed on the base 10. The damping member 60 and the synchronization gear 53 are located inside the base 10. The rotating rod is fixedly connected to the base 10. The first synchronization swing arm 51 and the second synchronization swing arm 52 are respectively located on opposite sides of the base 10 in the X direction. Among them, the first synchronization swing arm 51 is located in the positive X-axis direction of the base 10, and the second synchronization swing arm 52 is located in the negative X-axis direction of the base 10. The first sliding body 511 is installed in the first sliding groove 313 of the first fixing frame 31 and can slide in the first sliding groove 313. The second sliding body 521 is installed in the second sliding groove 323 of the second fixing frame 32 and can slide in the second sliding groove 323.

[0213] When the rotating mechanism 100 is in the flattened state, the first synchronization swing arm 51 and the second synchronization swing arm 52 are relatively unfolded. That is, the angle between the first synchronization swing arm 51 and the second synchronization swing arm 52 is approximately 180°. When the rotating mechanism 100 is in the folded state, the first synchronization swing arm 51 and the second synchronization swing arm 52 are relatively folded. That is, the first synchronization swing arm 51 and the second synchronization swing arm 52 are arranged substantially parallel.

[0214] When the first fixing frame 31 rotates relative to the base 10, it drives the first sliding body 511 to rotate relative to the base 10 and at the same time slide in the first sliding groove 313. When the first sliding body 511 rotates relative to the base 10, it drives the first rotating column 513 and the first gear 512 to rotate around the first rotating rod. The rotation of the first gear 512 drives the third gear 531 to rotate. The third gear 531 drives the fourth gear 532 to rotate. The fourth gear 532 drives the second gear 522 to rotate around the second rotating rod. The rotation of the second gear 522 drives the second sliding body 521 to rotate relative to the base 10 and makes the second sliding body 521 slide in the second sliding groove 323. At the same time, it drives the second fixing frame 32 to rotate relative to the base 10, so as to realize the synchronous rotation of the first synchronization swing arm 51 and the second synchronization swing arm 52, and the synchronous rotation of the first fixing frame 31 and the second fixing frame 32. Among them, the rotation directions of the first synchronization swing arm 51 and the second synchronization swing arm 52 are opposite, and the rotation directions of the first fixing frame 31 and the second fixing frame 32 are opposite.

[0215] When the first synchronous swing arm 51 rotates around the first rotating rod, it drives the first articulated body 514 and the third articulated body 515 to rotate. The third articulated body 515 repeatedly abuts against the third articulated seat 631, and the first articulated body 514 repeatedly abuts against the first articulated seat 621. When the second synchronous swing arm 52 rotates around the second rotating rod, it drives the second articulated body 524 and the fourth articulated body 525 to rotate. The fourth articulated body 525 repeatedly abuts against the fourth articulated seat 632, and the second articulated body 524 repeatedly abuts against the second articulated seat 622. The first articulated body 514 and the second articulated body 524 repeatedly push the first damping baffle 61 towards the damping spring 64 and repeatedly squeeze the damping spring 64, causing the damping spring 64 to generate an elastic force. The elastic restoring force of the damping spring 64 acts on the first synchronous swing arm 51 and the second synchronous swing arm 52, thereby providing a damping force for the rotation of the first synchronous swing arm 51 and the second synchronous swing arm 52. The damping force of the first synchronous swing arm 51 acts on the first housing 210 through the first fixing frame 31, and the damping force of the second synchronous swing arm 52 acts on the second housing 220 through the second fixing frame 32, thereby providing a damping feel for the user.

[0216] In this embodiment, by providing the synchronous assembly 50, and when the first synchronous swing arm 51 rotates, the second synchronous swing arm 52 can be driven to rotate through the synchronous gear 53, so that the synchronous rotation of the first synchronous swing arm 51 and the second synchronous swing arm 52 can be realized, and further the synchronous rotation of the rotating mechanism 100 and the foldable electronic device 1000 can be realized, which is convenient for the user to use and improves the user experience.

[0217] In this embodiment, by providing the damping member 60, and when the first synchronous swing arm 51 and the second synchronous swing arm 52 rotate relative to the base 10, the damping member 60 always abuts against the first synchronous swing arm 51 and the second synchronous swing arm 52 to generate a damping force, thereby providing a damping feel for the user and improving the user experience.

[0218] The above are only some embodiments and implementation manners of the present application. The protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application, and all should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A rotating mechanism, characterized in that, it includes: a base, a first main swing arm, and a second main swing arm; The base is provided with a first rotating groove and a second rotating groove, and the first rotating groove and the second rotating groove are respectively arranged on opposite sides in the width direction of the base; the base includes a first stopping surface, the first stopping surface is located in the first rotating groove, and the plane where the first stopping surface is located intersects with the width direction of the base; The first main swing arm includes a second stopping surface, and the plane where the second stopping surface is located intersects with the width direction of the base; The first main swing arm is installed in the first rotating groove, the second stopping surface faces the first rotating groove, and the first main swing arm can rotate and slide along the first rotating groove; The second main swing arm is installed in the second rotating groove, and the second main swing arm can rotate and slide along the second rotating groove; When the first main swing arm expands relative to the base, the first stopping surface is opposite to the second stopping surface, and along the width direction of the base, the first main swing arm is stopped with the base.

2. The rotating mechanism according to claim 1, characterized in that, When the first main swing arm expands relative to the base, the first stopping surface and the second stopping surface abut against each other, and the direction of the abutting force between the first stopping surface and the second stopping surface is consistent with the width direction of the base.

3. The rotating mechanism according to claim 2, characterized in that, The base further includes a first guide rail, the first guide rail is fixed in the first rotating groove and extends in a direction away from the second rotating groove, and the first guide rail is arranged side by side with the first stopping surface; The first main swing arm is provided with a first groove. When the first main swing arm is installed on the base, at least part of the first guide rail is located in the first groove, and the first main swing arm can rotate and slide along the first guide rail in the first rotating groove.

4. The rotating mechanism according to claim 3, characterized in that, Along the thickness direction of the base, the first guide rail is arranged side by side with the first stopping surface. The first main swing arm includes a first end, the opening of the first groove is located on the top surface or the bottom surface of the first main swing arm, and the first groove penetrates through the first end. The second stopping surface is arranged on the first end; when the first main swing arm is installed on the base, the first end faces the first rotating groove.

5. The rotating mechanism according to claim 4, characterized in that, The first guide rail is located on one side of the first stopping surface close to the top surface of the base; the opening of the first groove is located on the top surface of the first main swing arm, and the second stopping surface is connected between the bottom surface of the first main swing arm and the bottom wall surface of the first groove; When the first main swing arm is installed on the base, the first guide rail is located on one side of the first groove close to the top surface of the base, and the bottom surface of the first guide rail is opposite to and in contact with the bottom wall surface of the groove.

6. The rotating mechanism according to claim 3, characterized in that, The first stop surface includes a first sub-stop surface. Along the thickness direction of the base, the first sub-stop surface is arranged side by side with the first guide rail, and the first sub-stop surface is located on the side of the first guide rail close to the top surface of the base; The first main swing arm includes a first end. The opening of the first groove is located on the bottom surface of the first main swing arm and penetrates through the first end; the second stop surface includes a second sub-stop surface, and the second sub-stop surface is arranged on the first end and is connected between the top surface of the first main swing arm and the bottom wall surface of the first groove; When the first main swing arm is installed on the base, the first end faces the first rotation groove, the first guide rail is located on the side of the first groove away from the top surface of the base, and the top surface of the first guide rail is opposite to and in contact with the bottom wall surface of the first groove; When the first main swing arm expands relative to the base, the first sub-stop surface is opposite to the second sub-stop surface.

7. The rotating mechanism according to claim 6, characterized in that, The first stop surface further includes a third sub-stop surface. Along the length direction of the base, the third sub-stop surface is arranged side by side with the first guide rail; the first main swing arm further includes a fourth sub-stop surface, and the fourth sub-stop surface is arranged on the side wall of the first groove and faces the first end; When the first main swing arm expands relative to the base, the third sub-stop surface is arranged opposite to the fourth sub-stop surface.

8. The rotating mechanism according to claim 3, characterized in that, Along the length direction of the base, the first guide rail is arranged side by side with the first stop surface; the first main swing arm includes a first end, the opening of the first groove is located on the bottom surface of the first main swing arm, and the first groove penetrates through the first end, and the second stop surface is arranged on the side wall of the first groove and faces the first end; When the first main swing arm is installed on the base, the first end faces the first rotation groove, the first guide rail is located on the side of the first groove away from the top surface of the base, and the top surface of the first guide rail is opposite to and in contact with the bottom wall surface of the groove.

9. The rotating mechanism according to claim 3, characterized in that, The first stop surface includes a first sub-stop surface. Along the length direction of the base, the first guide rail is arranged side by side with the first sub-stop surface; The second stop surface includes a second sub-stop surface, and the second sub-stop surface is arranged at one end of the first main swing arm and is connected between the top surface of the first main swing arm and the bottom surface of the first main swing arm; When the first main swing arm expands relative to the base, the first sub-stop surface is opposite to the second sub-stop surface.

10. The rotating mechanism according to claim 9, characterized in that, The first stop surface further includes a third sub-stop surface. Along the length direction of the base, the third sub-stop surface is arranged side by side with the first sub-stop surface and the first guide rail, and the third sub-stop surface is located between the first sub-stop surface and the first guide rail; The first main swing arm includes a first end, and the opening of the first groove is located on the bottom surface of the first main swing arm and penetrates through the first end; the second stop surface further includes a fourth sub-stop surface, and the fourth sub-stop surface is provided on the side wall of the first groove and faces the first end; When the first main swing arm is installed on the base, the first end faces the first rotation groove, the first guide rail is located on the side of the top surface of the first groove facing away from the base, and the top surface of the first guide rail is opposite to and contacts the bottom wall surface of the first groove; When the first main swing arm expands relative to the base, the third sub-stop surface is opposite to the fourth sub-stop surface.

11. The rotating mechanism according to any one of claims 1 to 10, characterized in that, The first stop surface and the second stop surface are in interference fit.

12. The rotating mechanism according to claim 11, characterized in that, The interference amount between the first stop surface and the second stop surface is 0 mm to 0.1 mm.

13. The rotating mechanism according to any one of claims 1 to 10, characterized in that, The rotating mechanism further includes a wear-resistant layer, and the wear-resistant layer is provided on the first stop surface or / and the second stop surface.

14. The rotating mechanism according to any one of claims 1 to 10, characterized in that, The rotating mechanism has a folded state and an unfolded state. When the rotating mechanism switches from the unfolded state to the folded state, the first main swing arm rotates in a first direction. When the rotating mechanism is in the unfolded state, the first main swing arm and the base are stopped in a second direction; wherein, the second direction is opposite to the first direction.

15. The rotating mechanism according to any one of claims 1 to 10, characterized in that, The base includes an axle cap and a support plate, the axle cap and the support plate are stacked and fixedly connected to each other; when the first main swing arm and the second main swing arm expand relative to each other, the top surface of the first main swing arm and the top surface of the second main swing arm are flush with the surface of the support plate facing away from the axle cap.

16. A foldable electronic device, characterized in that, It includes a first housing, a second housing, a display screen and the rotating mechanism according to any one of claims 1 to 15. The rotating mechanism is connected between the first housing and the second housing, the display screen is installed on the first housing, the second housing and the rotating mechanism, and when the rotating mechanism rotates, the first housing and the second housing rotate relative to each other to drive the display screen to bend or unfold.

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