Rotating mechanisms and electronic equipment

Abstract

The present application provides a rotating mechanism and an electronic device. The rotating mechanism includes a base, a first fixed plate, a first synchronous swing arm, a first magnetic part, and a first electromagnet; the first fixed plate is provided with a first receiving groove, and the first electromagnet is provided in the first receiving groove; the first synchronous swing arm is rotatably connected to the base and slidably connected to the first fixed plate; the first magnetic part is provided at the end of the first synchronous swing arm away from the base, and there is a first force between the first magnetic part and the first electromagnet, and the magnitude of the first force changes with the change of the rotation angle of the first synchronous swing arm relative to the base. The damping force of the rotating mechanism of the technical solution of the present application is controllable, and the performance of the folding terminal product is good.

Description

Technical Field

[0001] The present application relates to the field of folding technology, and in particular to a rotating mechanism and an electronic device. Background Art

[0002] As flexible foldable screen technology matures, the application of foldable terminal products is becoming increasingly widespread. Foldable terminal products (such as foldable phones, foldable tablets, and foldable computers) must meet high-quality appearance and a good user experience to be accepted by consumers. Currently, the rotation mechanism of foldable terminal products generates mechanical force by squeezing springs and controls the damping force through concave cams. However, this places high demands on the springs used in foldable terminal products, making it difficult to control the damping force and affecting the performance of the foldable terminal products. Summary of the Invention

[0003] The embodiments of the present application provide a rotating mechanism and an electronic device, wherein the damping force of the rotating mechanism is controllable and the performance of the foldable terminal product is good.

[0004] In a first aspect, the present application provides a rotation mechanism, comprising a base, a first fixed plate, a second fixed plate, a first synchronous swing arm, a second synchronous swing arm, a first magnetic member, a second magnetic member, a first electromagnet, and a second electromagnet;

[0005] The first fixing plate and the second fixing plate are located on both sides of the base, the first fixing plate is provided with a first receiving groove, the first electromagnet is provided in the first receiving groove, the second fixing plate is provided with a second receiving groove, the second electromagnet is provided in the second receiving groove;

[0006] The first synchronous swing arm and the second synchronous swing arm are located on both sides of the base, the first synchronous swing arm is rotatably connected to the base and slidably connected to the first fixed plate, and the second synchronous swing arm is rotatably connected to the base and slidably connected to the second fixed plate;

[0007] The first magnetic member is provided at an end of the first synchronous swing arm away from the base, and a first acting force is exerted between the first magnetic member and the first electromagnet, wherein the magnitude of the first acting force varies with a rotation angle of the first synchronous swing arm relative to the base;

[0008] The second magnetic member is arranged at one end of the second synchronous swing arm away from the base. There is a second force between the second magnetic member and the second electromagnet, and the magnitude of the second force changes with the change of the rotation angle of the second synchronous swing arm relative to the base.

[0009] It is understandable that the first force between the first magnetic member and the first electromagnet can serve as a source of damping force when the rotating mechanism is folded. When the first force is equal to the folding force required for the rotating mechanism to fold, the rotating mechanism can achieve a hovering function, wherein the folding force required for the rotating mechanism to fold can be an external force that reacts on the folding / flattening of the rotating mechanism, such as the force applied by the user to the rotating mechanism to cause the rotating mechanism to fold / unfold, the gravity of the rotating mechanism, the gravity of the device to which the rotating mechanism is applied, etc. Since the first force can change with the change in the rotation angle of the first synchronous swing arm relative to the base, at each folding angle, the first force corresponding to the folding angle can be equal to the folding force required for the rotating mechanism to fold to the folding angle. Therefore, by controlling and adjusting the magnitude of the first force, the rotating mechanism can achieve multi-angle hovering, and the electronic device can be stopped at multiple angles.

[0010] Under this setting, the magnetic force between the first electromagnet and the first magnetic part is used as the damping force source of the rotating mechanism. By controlling the balance between the first force and the folding force required for the folding of the rotating mechanism, the damping force of the rotating mechanism and the hovering function can be effectively controlled. On the one hand, the electromagnet current at different folding angles can be adjusted based on the user's hand feel requirements to achieve the best folding feel. On the other hand, it can effectively avoid the problems in the existing technology of using a concave cam and a spring to squeeze each other to provide damping force, resulting in uncontrollable damping force, an increase in the number of parts, an increase in the overall weight of the equipment, an increase in cost, and an impact on the user's hand feel when folding. It has good reliability.

[0011] The second force between the second magnetic member and the second electromagnet can serve as a source of damping force when the rotating mechanism is folded. When the second force is equal to the folding force required for the rotating mechanism to fold, the rotating mechanism can achieve a hovering function, wherein the folding force required for the folding of the rotating mechanism can be an external force that reacts on the folding / flattening of the rotating mechanism, such as the force applied by the user to the rotating mechanism to cause the rotating mechanism to fold / unfold, the gravity of the rotating mechanism, the gravity of the device to which the rotating mechanism is applied, etc. Since the second force can change with the change in the rotation angle of the second synchronous swing arm relative to the base, at each folding angle, the second force corresponding to the folding angle can be equal to the folding force required for the rotating mechanism to fold to the folding angle. Therefore, the magnitude of the second force can be controlled to adjust the magnitude of the second force, so that the rotating mechanism can achieve multi-angle hovering, and the electronic device can be stopped at multiple angles.

[0012] Under this setting, the magnetic force between the second electromagnet and the second magnetic part is used as the damping force source of the rotating mechanism. By controlling the balance between the second force and the folding force required for the folding of the rotating mechanism, the damping force of the rotating mechanism and the hovering function can be effectively controlled. On the one hand, the current of the electromagnets at different folding angles can be adjusted based on the user's hand feel requirements to achieve the best folding feel. On the other hand, it can effectively avoid the problems in the existing technology of using a concave cam and a spring to squeeze each other to provide damping force, which causes uncontrollable damping force, an increase in the number of parts, an increase in the overall weight of the equipment, an increase in cost, and an impact on the user's hand feel when folding. It has good reliability.

[0013] In one possible implementation, the magnetic flux of the first electromagnet is a first magnetic flux, the magnitude of the first magnetic flux is positively correlated with the magnitude of the first force, and the magnitude of the first magnetic flux changes with the change of the rotation angle of the first synchronous swing arm relative to the base;

[0014] The magnetic flux of the second electromagnet is a second magnetic flux, the magnitude of the second magnetic flux is positively correlated with the magnitude of the second force, and the magnitude of the second magnetic flux changes with the change of the rotation angle of the second synchronous swing arm relative to the base.

[0015] That is, the greater the first magnetic flux, the greater the first force. The smaller the first magnetic flux, the smaller the first force, and vice versa. By controlling the magnitude of the first current flowing through the first electromagnet, the magnitude of the magnetic induction intensity of the first electromagnet, and thus the magnitude of the first magnetic flux, can be controlled. The greater the first current, the greater the magnetic induction intensity of the first electromagnet and the greater the first magnetic flux, and vice versa.

[0016] The larger the second magnetic flux, the greater the second force. The smaller the second magnetic flux, the smaller the second force, and vice versa. By controlling the magnitude of the second current flowing through the second electromagnet, the magnitude of the second electromagnet's magnetic induction intensity, and thus the magnitude of the second magnetic flux, can be controlled. The larger the second current, the greater the magnetic induction intensity of the second electromagnet and the greater the second magnetic flux, and vice versa.

[0017] In one possible embodiment, the rotating mechanism includes a folded state, the first force includes a first folded state magnetic force, the second force includes a second folded state magnetic force, the first folded state magnetic force is a magnetic repulsion force, and the second folded state magnetic force is a magnetic repulsion force.

[0018] In one possible implementation, the rotating mechanism includes an expanded state, the first acting force includes a first expanded state magnetic force, the second acting force includes a second expanded state magnetic force, the first expanded state magnetic force is a magnetic attraction, and the second expanded state magnetic force is a magnetic attraction.

[0019] In one possible embodiment, the first synchronous swing arm includes a first sliding end, the first magnetic member is disposed on the first sliding end, the first fixing plate is provided with a first sliding groove, the first sliding groove is connected to the first receiving groove, and the first sliding end is capable of sliding in the first sliding groove to move the first magnetic member closer to or away from the first electromagnet;

[0020] The second synchronous swing arm includes a second sliding end, the second magnetic member is arranged at the second sliding end, the second fixed plate is provided with a second sliding groove, the second sliding groove is connected to the second receiving groove, and the second sliding end can slide in the second sliding groove to make the second magnetic member approach the second electromagnet or move away from the second electromagnet.

[0021] Specifically, when the rotating mechanism is in the deployed state, the distance between the first magnetic member and the first electromagnet is the shortest. As the rotating mechanism switches from the deployed state to the intermediate state, the distance between the first magnetic member and the first electromagnet gradually increases. When the rotating mechanism is in the folded state, the distance between the first magnetic member and the first electromagnet is the farthest. That is, as the rotating mechanism switches from the deployed state to the folded state, the distance between the first magnetic member and the first electromagnet continuously increases, and as the rotating mechanism switches from the folded state to the deployed state, the distance between the first magnetic member and the first electromagnet continuously decreases.

[0022] When the rotating mechanism is in the deployed state, the distance between the second magnetic member and the second electromagnet is the shortest. As the rotating mechanism switches from the deployed state to the intermediate state, the distance between the second magnetic member and the second electromagnet gradually increases. When the rotating mechanism is in the folded state, the distance between the second magnetic member and the second electromagnet is the greatest. That is, as the rotating mechanism switches from the deployed state to the folded state, the distance between the second magnetic member and the second electromagnet continuously increases, and as the rotating mechanism switches from the folded state to the deployed state, the distance between the second magnetic member and the second electromagnet continuously decreases.

[0023] In a possible implementation manner, the rotation mechanism further includes a plurality of first displacement sensors and a plurality of second displacement sensors;

[0024] The plurality of first displacement sensors are provided on the first fixed plate and spaced apart along the length direction of the first slide groove, with at least a portion of each first displacement sensor being located within the first slide groove. A first protrusion is provided on a side surface of the first sliding end, and the first protrusion is capable of sliding within the first slide groove to contact the plurality of first displacement sensors.

[0025] The multiple second displacement sensors are arranged on the second fixed plate and are spaced apart along the length direction of the second slide groove. At least a portion of each second displacement sensor is located in the second slide groove. A second protrusion is provided on the side of the second sliding end. The second protrusion can slide in the second slide groove to contact the multiple second displacement sensors.

[0026] For example, the first displacement sensor may be a displacement spring that is deformed when in contact with the first protrusion, and the second displacement sensor may be a displacement spring that is deformed when in contact with the second protrusion.

[0027] In a possible implementation manner, the smaller the rotation angle of the first synchronous swing arm relative to the base, the closer the first displacement sensor in contact with the first protrusion is to the first electromagnet;

[0028] The smaller the rotation angle of the second synchronous swing arm relative to the base is, the closer the second displacement sensor in contact with the first protrusion is to the second electromagnet.

[0029] Among them, when the rotating mechanism is in the unfolded state, the rotation angle of the first synchronous swing arm and the second synchronous swing arm relative to the base is the smallest, and when the rotating mechanism is in the folded state, the rotation angle of the first synchronous swing arm and the second synchronous swing arm relative to the base is the largest.

[0030] In a possible implementation, the first electromagnet generates a first current when energized, the second electromagnet generates a second current when energized, and the rotating mechanism further includes a controller;

[0031] The controller is electrically connected to the first electromagnet and the plurality of first displacement sensors, each of the first displacement sensors is configured to generate a displacement detection signal and transmit the signal to the controller when in contact with the first protrusion, and the controller is configured to adjust the magnitude of the first current according to the received displacement detection signal;

[0032] The controller is electrically connected to the second electromagnet and multiple second displacement sensors. Each of the second displacement sensors is used to generate a displacement detection signal and transmit it to the controller when it contacts the second protrusion. The controller is used to adjust the magnitude of the second current according to the received displacement detection signal.

[0033] It is understandable that the displacement detection signals generated by different first displacement sensors may be the same or different. For example, when the rotating mechanism is in the folded state and the unfolded state, the first current is relatively large.

[0034] The displacement detection signals generated by different second displacement sensors may be the same or different. For example, when the rotating mechanism is in the folded state and the unfolded state, the second current is larger.

[0035] In a possible implementation manner, the first electromagnet includes a first magnetic core and a first coil, and the first coil is wound around the first magnetic core;

[0036] The second electromagnet includes a second magnetic core and a second coil, and the second coil is wound around the second magnetic core.

[0037] In one possible embodiment, the rotating mechanism also includes a synchronous gear, which is connected between the first sliding end of the first synchronous swing arm and the second sliding end of the second synchronous swing arm. The first synchronous swing arm rotates relative to the base, and the second synchronous swing arm is driven to rotate relative to the base through the synchronous gear.

[0038] In a second aspect, the present application provides an electronic device, comprising a first shell, a second shell, and the rotation mechanism as described above, wherein the rotation mechanism is connected between the first shell and the second shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a schematic structural diagram of an electronic device in a folded state provided by an embodiment of the present application;

[0040] Figure 2 yes Figure 1 A simplified structural diagram of the electronic device shown in the intermediate state;

[0041] Figure 3 yes Figure 1 A simplified structural diagram of the electronic device shown in FIG. 1 is in an unfolded state;

[0042] Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0043] Figure 5 yes Figure 4 an exploded schematic diagram of the electronic device shown;

[0044] Figure 6 It is a partial structural diagram of the rotation mechanism provided in an embodiment of the present application;

[0045] Figure 7 yes Figure 6 An exploded schematic diagram of the rotating mechanism shown;

[0046] Figure 8 yes Figure 6 A schematic structural diagram of the base of the rotating mechanism shown;

[0047] Figure 9 yes Figure 6 The assembly diagram of the first fixed plate and the second fixed plate of the rotating mechanism shown;

[0048] Figure 10 yes Figure 9 An exploded schematic diagram of the first fixing plate and the second fixing plate shown;

[0049] Figure 11 yes Figure 6 A schematic structural diagram of the main swing arm assembly of the rotating mechanism shown;

[0050] Figure 12 yes Figure 6 A schematic structural diagram of the synchronization mechanism of the rotating mechanism shown;

[0051] Figure 13 yes Figure 12 An exploded schematic diagram of the synchronization mechanism shown;

[0052] Figure 14 yes Figure 6 A schematic structural diagram of the damping mechanism of the rotating mechanism shown;

[0053] Figure 15 yes Figure 6 The schematic cross-sectional view of the rotating mechanism in the expanded state taken along the cutting line A is shown;

[0054] Figure 16 yes Figure 15 The cross-sectional schematic diagram of the rotating mechanism shown is in an intermediate state;

[0055] Figure 17 yes Figure 15 A cross-sectional schematic diagram of the rotating mechanism shown in the folded state;

[0056] Figure 18 yes Figure 6 A diagram showing a change process of the first acting force between the first electromagnet and the first magnetic member of the rotating mechanism during the process of switching from the folded state to the unfolded state;

[0057] Figure 19 yes Figure 6 Another diagram showing a change process of the first acting force between the first electromagnet and the first magnetic member of the rotating mechanism during the process of switching from the folded state to the unfolded state;

[0058] Figure 20 yes Figure 6 A diagram showing a change process of the second acting force between the second electromagnet and the second magnetic member of the rotating mechanism during the process of switching from the folded state to the unfolded state;

[0059] Figure 21yes Figure 6 Another diagram showing a change process of the second force between the second electromagnet and the second magnetic member of the rotating mechanism during the process of switching from the folded state to the unfolded state;

[0060] Figure 22 for Figure 6 A schematic top view of a partial structure of the rotating mechanism shown;

[0061] Figure 23 yes Figure 6 A schematic diagram of a portion of the structure of the rotating mechanism shown is in an expanded state;

[0062] Figure 24 yes Figure 6 A schematic diagram of a portion of the structure of the rotating mechanism shown is in an intermediate state;

[0063] Figure 25 yes Figure 6 A partial structural diagram of the rotating mechanism shown is in another intermediate state;

[0064] Figure 26 yes Figure 6 The diagram shows a partial structure of the rotating mechanism when it is in a folded state. DETAILED DESCRIPTION

[0065] For ease of understanding, the terms involved in the embodiments of the present application are first explained.

[0066] Multiple: refers to two or more than two.

[0067] Connection: should be understood in a broad sense. For example, A and B are connected, which can be either directly connected or indirectly connected through an intermediary.

[0068] The specific implementation of the present application will be clearly described below with reference to the accompanying drawings.

[0069] Folding terminals are a future trend in mobile terminal development, and their hinges are one of their core components. The damping mechanism, a mechanism within the hinge that controls the feel and folding angle of the terminal, is a key performance feature directly perceived by the user. Currently, a concave cam slider is used in conjunction with the concave cam structure of a gear swing arm. When the gear swing arm rotates, the concave cam slider is squeezed by the concave cam structure on the gear swing arm, compressing the spring to generate a damping force. By designing the concave cam profile, controlling the gear swing arm's rotation angle, and controlling the spring size, the damping force of the hinge can be indirectly controlled, thereby enabling the terminal's multi-angle hovering function. However, this places high demands on the springs used in folding terminal products, making it difficult to control the damping force and thus affecting the hovering function of the folding terminal product.

[0070] Based on this, the embodiments of the present application provide a rotation mechanism and an electronic device using the rotation mechanism. The damping force of the rotation mechanism is controllable, and the hovering performance of the foldable terminal product is good.

[0071] The electronic device may be any foldable device that can be unfolded and closed by a user. The electronic device includes, but is not limited to, a cell phone, a notebook computer, a tablet personal computer, a laptop computer, a personal digital assistant, a wearable device, or a mobile device. In the embodiments of the present application, a mobile phone is used as an example for illustration.

[0072] Figure 1 4 is a schematic structural diagram of an electronic device 400 provided in an embodiment of the present application in a folded state. Figure 2 yes Figure 1 The electronic device 400 is shown in a schematic structural diagram in an intermediate state. Figure 3 yes Figure 1 The electronic device 400 is shown in a simplified structural diagram when it is in an unfolded state. Figure 2 The unfolding angle α of the electronic device 400 is 120 degrees. Figure 3 The deployed angle β of the electronic device 400 is shown to be 180 degrees.

[0073] It should be noted that the angles illustrated in the embodiments of this application are allowed to have slight deviations. For example, Figure 2 The unfolding angle α of the electronic device 400 shown is 120 degrees, which means that α can be 120 degrees, or approximately 120 degrees, such as 110 degrees, 115 degrees, 125 degrees, or 130 degrees. Figure 3 The deployed angle β of the electronic device 400 is shown as 180 degrees, which means that β can be 180 degrees or approximately 180 degrees, such as 0 degrees, 5 degrees, 185 degrees, and 190 degrees. The angles described below by way of example can be understood in the same way.

[0074] The electronic device 400 shown in the embodiment of the present application is an electronic device that can be folded once. In other embodiments, the electronic device 400 can also be an electronic device that can be folded multiple times (more than twice). In this case, the electronic device 400 can include multiple parts, where two adjacent parts can be folded relatively close together until the electronic device 400 is in the folded state, and the two adjacent parts can be unfolded relatively far apart until the electronic device 400 is in the unfolded state.

[0075] Figure 4 is a structural diagram of an electronic device 400 provided in an embodiment of the present application. Figure 5 yes Figure 4 An exploded schematic diagram of the electronic device 400 is shown.

[0076] Please refer to Figure 4 and Figure 5 The electronic device 400 includes a folding device 200 and a flexible display 300, which is mounted on the folding device 200. The flexible display 300 includes a first portion 310, a second portion 320, and a foldable portion 330. The foldable portion 330 is located between the first portion 310 and the second portion 320 and can be bent. The first portion 310, the second portion 320, and the foldable portion 330 together constitute the flexible display 300.

[0077] In an embodiment of the present application, the flexible display screen 300 may be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode (MLED) display screen, a micro organic light-emitting diode (MLED) display screen, a micro organic light-emitting diode (MLED) display screen, or a quantum dot light-emitting diode (QLED) display screen.

[0078] The folding device 200 includes a first shell 210, a second shell 220 and a rotating mechanism 100. The first shell 210 is provided with a first accommodating groove 230, and the second shell 220 is provided with a second accommodating groove 240. The first accommodating groove 230 and the second accommodating groove 240 are connected to form an accommodating groove. The rotating mechanism 100 is installed in the accommodating groove and is fixedly connected to the first shell 210 and the second shell 220 to achieve a rotational connection between the first shell 210 and the second shell 220. The first shell 210 and the second shell 220 can rotate relative to each other through the rotating mechanism 100, so that the folding device 200 can switch between a folded state and an unfolded state. The first shell 210 and the second shell 220 are also provided with an accommodating space (not shown in the figure), which is used to accommodate electronic components and structural elements such as the processor, circuit board, camera module, etc. of the electronic device 400.

[0079] Among them, Figure 1 As shown, the relative rotation of the first housing 210 and the second housing 220 causes the folding device 200 to be in a folded state. This means that the first housing 210 and the second housing 220 rotate via the rotation mechanism 100 and approach each other, with the surfaces of the first housing 210 and the second housing 220 supporting the flexible display 300 facing each other. In practice, when the folding device 200 is in a fully folded state, the flexible display 300 mounted on the first housing 210 and the second housing 220 are folded, with the first portion 310 and the second portion 320 overlapping and partially contacting each other, although they may also be in full contact.

[0080] like Figure 2 As shown, the relative rotation of the first shell 210 and the second shell 220 makes the folding device 200 in an intermediate state, which means that the first shell 210 and the second shell 220 are rotated by the rotating mechanism 100, and move away from each other so that the angle between the first shell 210 and the second shell 220 becomes larger and larger, or, it means that the first shell 210 and the second shell 220 are rotated by the rotating mechanism 100, and move closer to each other so that the angle between the first shell 210 and the second shell 220 becomes smaller and smaller.

[0081] like Figure 3 As shown, the relative rotation of the first shell 210 and the second shell 220 makes the folding device 200 in the unfolded state, which means that the first shell 210 and the second shell 220 are rotated through the rotating mechanism 100 and move away from each other, and the angle between the first shell 210 and the second shell 220 continues to increase and can be close to 180 degrees or equal to 180 degrees.

[0082] The flexible display 300 is connected to the folding device 200. Specifically, the first housing 210 supports the first portion 310 of the flexible display 300, the second housing 220 supports the second portion 320 of the flexible display 300, and the foldable portion 330 of the flexible display 300 is disposed opposite the rotation mechanism 100. It will be understood that the first and second housings 210, 220 rotate relative to each other via the rotation mechanism 100. The relative proximity of the first and second housings 210, 220 drives the flexible display 300 to fold, thereby folding the electronic device 400. When the electronic device 400 is in the folded state, the foldable portion 330 of the flexible display 300 bends, and the first and second portions 310, 320 are disposed opposite each other. At this point, the flexible display 300 is positioned between the first and second housings 210, 220, significantly reducing the likelihood of damage to the flexible display 300 and effectively protecting it.

[0083] In an embodiment of the present application, the first shell 210 and the second shell 220 rotate relative to each other via the rotating mechanism 100, and the first shell 210 and the second shell 220 move away from each other to drive the flexible display screen 300 to unfold, so that the electronic device 400 unfolds to an intermediate state. When the electronic device 400 is in the intermediate state, the first shell 210 and the second shell 220 unfold to an angle α, the first part 310 and the second part 320 unfold relative to each other, and drive the foldable part 330 to unfold. At this time, the angle between the first part 310 and the second part 320 is α. In this embodiment, α is 120 degrees. In other embodiments, α may also be approximately 120 degrees, or may be 110 degrees, 115 degrees, 125 degrees, or 130 degrees, etc.

[0084] The first shell 210 and the second shell 220 rotate relative to each other via the rotating mechanism 100. As the first shell 210 and the second shell 220 move away from each other, the flexible display 300 is further unfolded until the electronic device 400 unfolds. When the folding device 200 is in the unfolded state, the angle between the first shell 210 and the second shell 220 is β. The foldable portion 330 unfolds, and the first portion 310 and the second portion 320 unfold relative to each other. At this point, the angles between the first portion 310, the second portion 320, and the foldable portion 330 are all β. The flexible display 300 has a large display area, enabling a large-screen display for the electronic device 400 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 0 degrees, 5 degrees, 185 degrees, 190 degrees, etc.

[0085] It is understood that when the electronic device 400 is in the unfolded state, the rotating mechanism 100 is also in the unfolded state. When the electronic device 400 is in the folded state, the rotating mechanism 100 is also in the folded state. When the electronic device 400 is in the intermediate state, the rotating mechanism 100 is also in the intermediate state.

[0086] Figure 6 is a partial structural diagram of the rotation mechanism 100 provided in an embodiment of the present application. Figure 7 yes Figure 6 The exploded view of the rotating mechanism 100 is shown in FIG. Figure 6 and Figure 7 , only a partial structure of the rotating mechanism 100 is shown.

[0087] Please refer to Figure 6 and Figure 7 The rotating mechanism 100 includes a base 10, a first fixed plate 20, a second fixed plate 30, a main swing arm assembly 40, a synchronization mechanism 50, a damping mechanism 60, a plurality of first displacement sensors 70, a plurality of second displacement sensors 80 and a controller.

[0088] The first fixed plate 20 and the second fixed plate 30 are distributed on both sides of the base 10. The first fixed plate 20, the second fixed plate 30 and the base 10 can cooperate to form a receiving space for accommodating the flexible display screen, thereby providing better support performance for the flexible display screen. For example, the receiving space can be in the shape of a water droplet, or the receiving space can be in the shape of a baseball. The main swing arm assembly 40 and the synchronization mechanism 50 are arranged at intervals along the length direction of the base 10. The damping mechanism 60 is distributed on the first fixed plate 20 and the second fixed plate 30. A plurality of first displacement sensors 70 are distributed at intervals on the first fixed plate 20, and a plurality of second displacement sensors 80 are distributed at intervals on the second fixed plate 30. The controller is electrically connected to the plurality of first displacement sensors 70 and the plurality of second displacement sensors 80.

[0089] Figure 8 yes Figure 6 A schematic structural diagram of the base 10 of the rotating mechanism 100 is shown.

[0090] See also Figure 8 , the base 10 can remain stationary during the relative folding and unfolding of the first fixing plate 20 and the second fixing plate 30. In other words, during the relative folding and unfolding of the first fixing plate 20 and the second fixing plate 30, the base 10 can maintain its position unchanged, that is, the base 10 remains relatively stationary, while both the first fixing plate 20 and the second fixing plate 30 can rotate relative to the base 10.

[0091] The base 10 is provided with a first rotation groove 11, a second rotation groove 12, and a mounting groove 13. The first rotation groove 11, the second rotation groove 12, and the mounting groove 13 are sequentially spaced apart along the length of the base 10. The opening of the first rotation groove 11 is located on one side of the width of the base 10, while the opening of the second rotation groove 12 is located on the other side of the width of the base 10. The first rotation groove 11 extends in the opposite direction to the second rotation groove 12. The first rotation groove 11 is arc-shaped, and the second rotation groove 12 is also arc-shaped. The base 10 is provided with a first arc-shaped arm 14 and a second arc-shaped arm 15. The first arc-shaped arm 14 is located within the first rotation groove 11, and the second arc-shaped arm 15 is located within the second rotation groove 12.

[0092] For example, there are two first arcuate arms 14, which are respectively located on two opposite inner walls of the first rotation groove 11. There are two second arcuate arms 15, which are respectively located on two opposite inner walls of the second rotation groove 12.

[0093] The mounting groove 13 is used to accommodate at least a portion of the synchronization mechanism 50 therein to ensure the stable installation of the synchronization mechanism 50. The base 10 also has a receiving space 16, which is connected to the mounting groove 13 and can be used to accommodate at least a portion of the components of the rotation mechanism 100 and other structures of the electronic device 400.

[0094] Figure 9 yes Figure 6 The assembly diagram of the first fixing plate 20 and the second fixing plate 30 of the rotating mechanism 100 is shown in FIG. Figure 10 yes Figure 9 The exploded schematic diagram of the first fixing plate 20 and the second fixing plate 30 is shown.

[0095] Please refer to Figure 9 and Figure 10 The first fixing plate 20 and the second fixing plate 30 can cooperate to form an enclosed space, and the enclosed space can accommodate the base 10 therein.

[0096] The first fixing plate 20 is rotatable relative to the base 10 and is connected to the first housing 210, enabling interlocking movement with the first housing 210. Specifically, when the first housing 210 rotates relative to the base 10, the first fixing plate 20 is driven to rotate synchronously relative to the base 10. This ensures that the electronic device 400 as a whole has superior mechanical tensile and compression resistance.

[0097] The first fixing plate 20 is provided with a first fixing slot 21, a first slide slot 22, a first receiving slot 23, and a plurality of third receiving slots 24. The first fixing slot 21 is capable of receiving at least a portion of the main swing arm assembly 40. The first slide slot 22, the first receiving slot 23, and the plurality of third receiving slots 24 are spaced apart from the first fixing slot 21 and are arranged in the width direction of the first fixing plate 20. The plurality of third receiving slots 24 are spaced apart in the direction in which the first slide slot 22 extends.

[0098] The first chute 22 can accommodate at least a portion of the synchronization mechanism 50. The first receiving groove 23 is connected to the first chute 22 and can accommodate the first electromagnet 63. The plurality of third receiving grooves 24 are each connected to the first chute 22 and can accommodate a plurality of first displacement sensors 70 in a one-to-one correspondence. In other words, each third receiving groove 24 can accommodate a first displacement sensor 70.

[0099] The second fixing plate 30 is rotatable relative to the base 10 and is connected to the second housing 220, enabling interlocking movement with the second housing 220. Specifically, when the second housing 220 rotates relative to the base 10, the second fixing plate 30 is driven to rotate synchronously with the base 10. This ensures that the electronic device 400 as a whole has superior mechanical resistance to both tensile and crushing forces.

[0100] The second fixing plate 30 is provided with a second fixing slot 31, a second slide slot 32, a second receiving slot 33, and a plurality of fourth receiving slots 34. The second fixing slot 31 is capable of receiving at least a portion of the main swing arm assembly 40. The second slide slot 32, the second receiving slot 33, and the plurality of fourth receiving slots 34 are spaced apart from the second fixing slot 31 and are arranged in the width direction of the second fixing plate 30. The plurality of fourth receiving slots 34 are spaced apart in the direction in which the second slide slot 32 extends.

[0101] The second chute 32 can accommodate at least a portion of the synchronization mechanism 50. The second receiving groove 33 is connected to the second chute 32 and can accommodate the second electromagnet 64. The plurality of fourth receiving grooves 34 are each connected to the second chute 32 and can accommodate a plurality of second displacement sensors 80 in a one-to-one correspondence. In other words, each fourth receiving groove 34 can accommodate a second displacement sensor 80.

[0102] Based on the above description, when the first fixing plate 20 and the second fixing plate 30 rotate relative to the base 10 and approach each other, the first shell 210 and the second shell 220 also rotate relative to the base 10 and approach each other, thereby achieving relative folding of the first shell 210 and the second shell 220. When the first fixing plate 20 and the second fixing plate 30 rotate relative to the base 10 and move away from each other, the first shell 210 and the second shell 220 also rotate relative to the base 10 and move away from each other, thereby achieving relative unfolding of the first shell 210 and the second shell 220.

[0103] In the embodiment of the present application, the main swing arm assembly 40 can control the swinging posture of the rotating mechanism 100, thereby supporting the flexible display screen and improving the strength of the entire rotating mechanism 100. The main swing arm assembly 40 can realize the rotational connection between the first fixing plate 20 and the base 10, and the main swing arm assembly 40 can also realize the rotational connection between the second fixing plate 30 and the base 10.

[0104] Figure 11 yes Figure 6 The structure diagram of the main swing arm assembly 40 of the rotating mechanism 100 is shown.

[0105] See also Figure 11 The main swing arm assembly 40 includes a first main swing arm 41 and a second main swing arm 42. The first main swing arm 41 and the second main swing arm 42 are respectively located on both sides of the base 10.

[0106] The first main swing arm 41 is rotatably connected to the base 10 and fixedly connected to the first fixing plate 20. The first main swing arm 41 can be driven to rotate relative to the base 10 by the rotation of the first fixing plate 20 relative to the base 10. Specifically, the first main swing arm 41 includes a first body 411 and a first rotating structure 412 disposed on the first body 411. At least a portion of the first body 411 is positioned within the first fixing slot 21 of the first fixing plate 20. The first body 411 is fixedly connected to the first fixing plate 20, thereby fixedly connecting the first main swing arm 41 to the first fixing plate 20 and thereby achieving interlocking movement between the first main swing arm 41 and the first fixing plate 20. That is, when the first fixing plate 20 rotates relative to the base 10, the first main swing arm 41 also rotates relative to the base 10. For example, the first body 411 can be fixedly connected to the first fixing plate 20 by screws. The first rotating structure 412 is provided with a first arcuate slot 413, which allows the first arcuate arm 14 of the base 10 to slide therein. The sliding movement of the first arcuate arm 14 within the first arcuate slot 413 enables the rotational movement of the first main swing arm 41 and the base 10. For example, there are two first arcuate slots 413, one on each side of the first rotating structure 412, and each first arcuate slot 413 allows one first arcuate arm 14 to slide therein.

[0107] The second main swing arm 42 is rotatably connected to the base 10 and fixedly connected to the second fixing plate 30. The second main swing arm 42 can be driven to rotate relative to the base 10 by the rotation of the second fixing plate 30 relative to the base 10. Specifically, the second main swing arm 42 includes a second body 421 and a second rotating structure 422 disposed on the second body 421. At least a portion of the second body 421 is positioned within the second fixing slot 31 of the second fixing plate 30. The second body 421 is fixedly connected to the second fixing plate 30, thereby fixedly connecting the second main swing arm 42 to the second fixing plate 30 and achieving interlocking movement. That is, when the second fixing plate 30 rotates relative to the base 10, the second main swing arm 42 also rotates relative to the base 10. For example, the second body 421 can be fixedly connected to the second fixing plate 30 by screws. The second rotating structure 422 is provided with a second arcuate slot 423, which allows the second arcuate arm 15 of the base 10 to slide therein. The sliding movement of the second arcuate arm 15 within the second arcuate slot 423 enables the rotational movement of the second main swing arm 42 and the base 10. For example, there are two second arcuate slots 423, one on each side of the second rotating structure 422, and each second arcuate slot 423 allows one second arcuate arm 15 to slide therein.

[0108] Based on the above description, it should be understood that the first fixed plate 20 can rotate relative to the base 10, driving the first main swing arm 41 to rotate relative to the base 10, forming a rotation chain of "first fixed plate 20 - first main swing arm 41 - base 10." The second fixed plate 30 can rotate relative to the base 10, driving the second main swing arm 42 to rotate relative to the base 10, forming a rotation chain of "second fixed plate 30 - second main swing arm 42 - base 10." This allows the rotating mechanism 100 to perform smooth and fluent rotational motion.

[0109] In the embodiment of the present application, the synchronization mechanism 50 can synchronize the rotation angles of the first fixing plate 20 and the second fixing plate 30 .

[0110] Figure 12 yes Figure 6 The structural diagram of the synchronization mechanism 50 of the rotating mechanism 100 is shown in FIG. Figure 13 yes Figure 12 An exploded schematic diagram of the synchronization mechanism 50 is shown.

[0111] Please refer to Figure 12 and Figure 13The synchronization mechanism 50 includes a first synchronization swing arm 51, a second synchronization swing arm 52, a first shaft 53, a second shaft 54, a third shaft 55, a fourth shaft 56, a synchronization gear 57, a first stopper 58, and a second stopper 59. The first synchronization swing arm 51 and the second synchronization swing arm 52 are respectively connected to the two sides of the synchronization gear 57. The synchronization gear 57 is sleeved on the first shaft 53, the second shaft 54, the third shaft 55, and the fourth shaft 56 to form a gear shaft structure with each shaft.

[0112] Specifically, the first synchronous swing arm 51 includes a first rotating end 511 and a first sliding end 512. The first rotating end 511 is connected to the synchronous gear 57, thereby being driven to rotate relative to the base 10 through the meshing relationship between the gears in the synchronous gear 57. A first shaft 53 is disposed through the first rotating end 511 of the first synchronous swing arm 51, and both ends of the first shaft 53 extend out of the first synchronous swing arm 51. The first shaft 53 is capable of rotating about its own rotation center, thereby enabling the first synchronous swing arm 51 to achieve rotational movement relative to the base 10 via the first shaft 53. The first sliding end 512 is capable of sliding within the first sliding groove 22 of the first fixed plate 20. In other words, the first synchronous swing arm 51 is slidably connected to the first fixed plate 20. Through the sliding engagement between the first synchronous swing arm 51 and the first fixed plate 20, the rotational movement of the first fixed plate 20 relative to the base 10 is converted into the swinging movement of the first synchronous swing arm 51 relative to the base 10. A first protrusion 513 is provided on the side surface of the first sliding end 512 . The first protrusion 513 can slide in the first sliding groove 22 following the sliding movement of the first sliding end 512 .

[0113] When the first fixed plate 20 is driven by the first main swing arm 41 to rotate relative to the base 10, the first synchronous swing arm 51 can rotate relative to the base 10 and slide relative to the first fixed plate 20. The first main swing arm 41 is rotationally connected to the base 10 and fixedly connected to the first fixed plate 20, thereby forming a connecting rod structure. The first synchronous swing arm 51 is rotationally connected to the base 10 and slideably connected to the first fixed plate 20, thereby forming a connecting rod and slider structure. Thus, the connection between the first fixed plate 20 and the base 10 can be achieved through the connecting rod structure and the connecting rod and slider structure. Under this architecture, the rotation mechanism 100 has a small number of parts, simple mating relationships and mating positions, and easy to manufacture and assemble the components, which is conducive to mass production.

[0114] The second synchronous swing arm 52 includes a second rotating end 521 and a second sliding end 522. The second rotating end 521 is connected to the synchronous gear 57, thereby being driven to rotate relative to the base 10 through the meshing relationship between the gears in the synchronous gear 57. A second shaft 54 extends through the second rotating end 521 of the second synchronous swing arm 52, and both ends of the second shaft 54 extend from the second synchronous swing arm 52. The second shaft 54 is capable of rotating about its own rotation center, thereby enabling the second synchronous swing arm 52 to rotate relative to the base 10 via the second shaft 54. The second sliding end 522 is capable of sliding within the second sliding groove 32 of the second fixed plate 30. In other words, the second synchronous swing arm 52 is slidably connected to the second fixed plate 30. Through the sliding engagement between the second synchronous swing arm 52 and the second fixed plate 30, the rotational motion of the second fixed plate 30 relative to the base 10 is converted into the swinging motion of the second synchronous swing arm 52 relative to the base 10. A second protrusion 523 is provided on the side surface of the second sliding end 522 . The second protrusion 523 can slide in the second sliding groove 32 following the sliding movement of the second sliding end 522 .

[0115] When the second fixed plate 30 is driven by the second main swing arm 42 to rotate relative to the base 10, the second synchronous swing arm 52 can rotate relative to the base 10 and slide relative to the second fixed plate 30. The second main swing arm 42 is rotationally connected to the base 10 and fixedly connected to the second fixed plate 30, thereby forming a connecting rod structure. The second synchronous swing arm 52 is rotationally connected to the base 10 and slideably connected to the second fixed plate 30, thereby forming a connecting rod and slider structure. Thus, the connection between the second fixed plate 30 and the base 10 is achieved through the connecting rod structure and the connecting rod and slider structure. With this architecture, the rotation mechanism 100 has a small number of parts, simple mating relationships and mating positions, and easy manufacturing and assembly of the components, which is conducive to mass production.

[0116] Please continue reading Figure 11 and Figure 12 The synchronous gear 57 includes a first rotating gear 571 , a second rotating gear 572 , a first synchronous gear 573 and a second synchronous gear 574 .

[0117] The first rotating gear 571 is disposed at the first rotating end 511 of the first synchronous swing arm 51 and is sleeved on the first shaft 53. The first rotating gear 571 and the first shaft 53 form a gear shaft structure, thereby enabling the first shaft 53 and the first rotating gear 571 to rotate synchronously. The second rotating gear 572 is disposed at the second rotating end 521 of the second synchronous swing arm 52 and is sleeved on the second shaft 54. The second rotating gear 572 and the second shaft 54 form a gear shaft structure, thereby enabling the second shaft 54 and the second rotating gear 572 to rotate synchronously.

[0118] For example, the first synchronous swing arm 51 and the first rotating gear 571 can be an assembled structure formed by welding, bonding, etc., or they can be an integral structure formed by an integral molding process. The second synchronous swing arm 52 and the second rotating gear 572 can be an assembled structure formed by welding, bonding, etc., or they can be an integral structure formed by an integral molding process.

[0119] The first synchronous gear 573 meshes with the first rotating gear 571, which in turn meshes with the second synchronous gear 574. The first synchronous gear 573 and the third shaft 55 can form a gear shaft structure, thereby enabling the third shaft 55 to rotate synchronously with the first synchronous gear 573. The second synchronous gear 574 meshes with the second rotating gear 572. The second synchronous gear 574 and the fourth shaft 56 can form a gear shaft structure, thereby enabling the fourth shaft 56 to rotate synchronously with the second synchronous gear 574. It will be understood that since the second synchronous gear 574 also meshes with the first synchronous gear 573, due to the mutual meshing relationship between the two, when one rotates, the other can also rotate synchronously. That is, the first synchronous swing arm 51, the second synchronous swing arm 52, the first rotating gear 571, the second rotating gear 572, the first synchronous gear 573 and the second synchronous gear 574 can form a gear motion chain of "first synchronous swing arm 51-first rotating gear 571-first synchronous gear 573-second synchronous gear 574-second rotating gear 572-second synchronous swing arm 52", thereby realizing the synchronous motion of the first synchronous swing arm 51 and the second synchronous swing arm 52, that is, realizing the opening and closing of the first synchronous swing arm 51 and the second synchronous swing arm 52, that is, realizing the opening and closing of the electronic device 400. The synchronous motion can be understood as the synchronization of the rotation angles of the first synchronous swing arm 51 and the second synchronous swing arm 52, that is, if the first synchronous swing arm 51 rotates 30° relative to the base 10, the second synchronous swing arm 52 will also rotate 30° relative to the base 10. In other words, the first synchronous swing arm 51 and the second synchronous swing arm 52 are respectively connected to the two sides of the synchronous gear 57. The first synchronous swing arm 51 can rotate relative to the base 10 and drive the second synchronous swing arm 52 to rotate relative to the base 10 through the synchronous gear 57.

[0120] The first stopper 58 is connected to one end of the first shaft 53, the second shaft 54, the third shaft 55, and the fourth shaft 56, and abuts the synchronous gear 57. The second stopper 59 is connected to the other ends of the first shaft 53, the second shaft 54, the third shaft 55, and the fourth shaft 56, and abuts the synchronous gear 57. The first stopper 58 and the second stopper 59 can limit the movement of the gears mounted on the shafts in the axial direction of the shafts, ensuring that the synchronous movement of the gear swing arm assembly does not deflect, and improving reliability.

[0121] Figure 14 yes Figure 6 FIG. 1 is a schematic structural diagram of the damping mechanism 60 of the rotating mechanism 100 .

[0122] See also Figure 14 The damping mechanism 60 can ensure that the first and second synchronous swing arms 51, 52 remain at a certain angle after rotating to that angle, thereby helping to fix the angles of the first and second synchronous swing arms 51, 52. In other words, the damping mechanism 60 can achieve a slow descent effect when the rotating mechanism 100 is opened and closed, that is, the electronic device 400 can be positioned at any angle during folding or unfolding according to usage requirements. The damping mechanism 60 may include a first magnetic member 61, a second magnetic member 62, a first electromagnet 63, and a second electromagnet 64.

[0123] The first magnetic member 61 is arranged at the end of the first synchronous swing arm 51 away from the base 10, that is, the first magnetic member 61 is arranged at the first sliding end 512 of the first synchronous swing arm 51. The first magnetic member 61 can follow the sliding movement of the first sliding end 512 in the first sliding groove 22 of the first fixed plate 20 and also slide in the first sliding groove 22.

[0124] The first electromagnet 63 is disposed in the first receiving groove 23 of the first fixing plate 20 . The first electromagnet 63 may include a first magnetic core 632 and a first coil 631 . The first coil 631 is wound around the first magnetic core 632 .

[0125] In the embodiment of the present application, a first acting force exists between the first magnetic member 61 and the first electromagnet 63, and the first acting force can serve as a damping force source for the rotating mechanism 100. The magnitude and direction of the first acting force change as the rotation angle of the first synchronous swing arm 51 relative to the base 10 changes. The change in the direction of the first acting force means that the first acting force can include both the magnetic attraction force generated by the mutual attraction between the first magnetic member 61 and the first electromagnet 63 when they attract each other, and the magnetic repulsion force generated by the mutual repulsion between the first magnetic member 61 and the first electromagnet 63 when they repel each other, and the directions of the magnetic attraction force and the magnetic repulsion force are opposite.

[0126] By using the first force generated by the cooperation between the first magnetic member 61 and the first electromagnet 63 as the damping force source of the rotating mechanism 100, compared with the prior art arrangement of providing damping force by a concave cam and a spring, on the one hand, the first magnetic member 61 and the first electromagnet 63 can be fixed by the structure of the rotating mechanism 100 itself (such as the first synchronous swing arm 51 fixing the first magnetic member 61, and the first fixing plate 20 fixing the first electromagnet 63), without the need to set up more additional structural members to fix the first magnetic member 61 and the first electromagnet 63. The rotating mechanism 100 has fewer parts, which is conducive to reducing the weight of the rotating mechanism 100, reducing the cost of the rotating mechanism 100, and rationally utilizing the spatial layout of the rotating mechanism 100. On the other hand, the first magnetic member 61 and the first electromagnet 63 are easy to process and assemble, which is conducive to reducing the difficulty of assembling the rotating mechanism 100.

[0127] In the embodiment of the present application, the first electromagnet 63 is capable of generating a first current when energized. The magnitude of the first current can be continuously variable, providing different magnitudes of the first current in accordance with the rotation angle of the first synchronous swing arm 51 relative to the base 10, so that the first force at each angle is equal to the folding force required for the rotating mechanism 100 to fold, thereby enabling the hovering function of the rotating mechanism 100 at each angle. The folding force required for the folding of the rotating mechanism 100 can be an external force that reacts to the folding / unfolding of the rotating mechanism 100, such as a force applied by a user to the rotating mechanism 100 to cause it to fold / unfold, the weight of the rotating mechanism 100, the weight of the electronic device 400, or other external forces that react to the folding / unfolding of the rotating mechanism 100.

[0128] The positive and negative directions of the first current can also change, thereby changing the magnetism of the first electromagnet 63. Specifically, the first electromagnet 63 can be energized to generate magnetism that attracts the first magnetic member 61, or it can be energized to generate magnetism that repels the first magnetic member 61. For example, when the first electromagnet 63 is energized to generate magnetism that attracts the first magnetic member 61, the direction of the first current can be positive. When the first electromagnet 63 is energized to generate magnetism that repels the first magnetic member 61, the direction of the first current can be negative.

[0129] Under this setting, the magnetism of the first electromagnet 63 is controlled by the first current, which can effectively avoid the fatigue effect of the spring caused by the use of a concave cam and a spring to squeeze the damping force in the prior art, and can prevent the damping force of the rotating mechanism 100 from having a downward trend, which is beneficial to improving the user's damping feel when the rotating mechanism 100 is folded.

[0130] In a specific application scenario, the first electromagnet 63 includes a first magnetic pole and a second magnetic pole. The first magnetic pole is the magnetic pole of the first electromagnet 63 facing the first magnetic member 61, and the second magnetic pole is the magnetic pole of the first electromagnet 63 away from the first magnetic member 61. The first magnetic member 61 includes a third magnetic pole and a fourth magnetic pole. The third magnetic pole is the magnetic pole of the first magnetic member 61 facing the first electromagnet 63, and the fourth magnetic pole is the magnetic pole of the first magnetic member 61 away from the first electromagnet 63. The third magnetic pole is the north pole, and the fourth magnetic pole is the south pole. When the direction of the first current is positive, the first magnetic pole is the south pole and the second magnetic pole is the north pole. As a result, the first force is a magnetic attraction due to the effect of opposite charges attracting. When the direction of the first current is negative, the first magnetic pole is the north pole and the second magnetic pole is the south pole. As a result, the first force is a magnetic repulsion due to the effect of like charges repelling.

[0131] Figure 15 yes Figure 6 The cross-sectional view of the rotating mechanism 100 in the expanded state is shown along the cutting line A. Figure 16 yes Figure 15 The cross-sectional view of the rotating mechanism 100 shown is in an intermediate state. Figure 17 yes Figure 15 The rotating mechanism 100 is shown as a cross-sectional schematic diagram in a folded state.

[0132] Please refer to Figure 15 、 Figure 16 and Figure 17 Since the first synchronous swing arm 51 can rotate relative to the base 10, while the first synchronous swing arm 51 rotates relative to the base 10, the first sliding end 512 of the first synchronous swing arm 51 will slide in the first slide groove 22 of the first fixed plate 20, so the first magnetic member 61 will be driven to slide in the first slide groove 22, so that the distance between the first magnetic member 61 and the first electromagnet 63 can continuously change, and the first magnetic member 61 approaches the first electromagnet 63 or moves away from the first electromagnet 63.

[0133] Specifically, when the rotating mechanism 100 is in the expanded state, the distance between the first magnetic member 61 and the first electromagnet 63 is the shortest. In the process of switching the rotating mechanism 100 from the expanded state to the intermediate state, the distance between the first magnetic member 61 and the first electromagnet 63 gradually increases. When the rotating mechanism 100 is in the folded state, the distance between the first magnetic member 61 and the first electromagnet 63 is the farthest. That is, in the process of switching the rotating mechanism 100 from the expanded state to the folded state, the distance between the first magnetic member 61 and the first electromagnet 63 continues to increase, and in the process of switching the rotating mechanism 100 from the folded state to the expanded state, the distance between the first magnetic member 61 and the first electromagnet 63 continues to decrease.

[0134] For example, during the process of the rotating mechanism 100 switching from the folded state to the intermediate state and then to the unfolded state, the first force may first increase and then decrease. During the process of the rotating mechanism 100 switching from the unfolded state to the intermediate state and then to the folded state, the first force may first increase and then decrease.

[0135] When the rotating mechanism 100 is in the folded state, a first folded state magnetic force exists between the first magnetic member 61 and the first electromagnet 63. When the rotating mechanism 100 is in the unfolded state, a first unfolded state magnetic force exists between the first magnetic member 61 and the first electromagnet 63.

[0136] When the rotating mechanism 100 is in the folded state, the direction of the first current can be the negative direction, and the first acting force can be the magnetic repulsive force, that is, the first folded state magnetic force is the magnetic repulsive force. When the rotating mechanism 100 is in the unfolded state, the direction of the first current can be the positive direction, and the first acting force can be the magnetic attractive force, that is, the first folded state magnetic force is the magnetic attractive force. For example, when the rotation angle of the first synchronous swing arm 51 relative to the base 10 is in the range of 0° to 45°, the first acting force is the magnetic attractive force. When the rotation angle of the first synchronous swing arm 51 relative to the base 10 is in the range of 45° to 90°, the first acting force is the magnetic repulsive force. Among them, when the rotating mechanism 100 is in the unfolded state, the rotation angle of the first synchronous swing arm 51 relative to the base 10 is 0°, and when the rotating mechanism 100 is in the folded state, the rotation angle of the first synchronous swing arm 51 relative to the base 10 is 90°.

[0137] It should be noted that when the rotating mechanism 100 is in the folded state, the first acting force is not limited to magnetic repulsion and can also be magnetic attraction. When the rotating mechanism 100 is in the unfolded state, the first acting force is not limited to magnetic attraction and can also be magnetic repulsion. The specific implementation form of the first acting force can be selected according to the actual application scenario of the rotating mechanism 100 and is not strictly limited in this regard in the embodiments of the present application.

[0138] In the embodiment of the present application, the magnetic flux of the first electromagnet 63 is a first magnetic flux, and the magnitude of the first magnetic flux is positively correlated with the magnitude of the first acting force. That is, the greater the first magnetic flux, the greater the first acting force. The smaller the first magnetic flux, the smaller the first acting force, and vice versa. The magnitude of the first magnetic flux changes with the rotation angle of the first synchronous swing arm 51 relative to the base 10.

[0139] The magnitude of the magnetic induction intensity of the first electromagnet 63, and thus the magnitude of the first magnetic flux, can be controlled by controlling the magnitude of the first current flowing through the first electromagnet 63. The greater the first current, the greater the magnetic induction intensity of the first electromagnet 63 and the greater the first magnetic flux, and vice versa.

[0140] It should be noted that the magnitude and direction of the first force can vary with the rotation angle of the first synchronous swing arm 51 relative to the base 10. When the external force acting on the rotating mechanism 100 causes the folding angle of the rotating mechanism 100 to change too rapidly and exceeds the preset hovering range of the rotating mechanism 100, it can be determined that the user does not need to rotate the mechanism 100 to achieve hovering, and the rotating mechanism 100 can be prevented from hovering. For example, the preset angle range can be within the range of 30°-150°. When the first force is equal to the folding force required to fold the rotating mechanism 100, the rotating mechanism 100 can achieve hovering.

[0141] Figure 18 yes Figure 6 FIG. 1 is a diagram showing a change process of the first acting force between the first electromagnet 63 and the first magnetic member 61 of the rotating mechanism 100 during the process of switching from the folded state to the unfolded state.

[0142] See also Figure 18 In a specific application scenario, the rotating mechanism 100 is not in a hovering state, F1 indicates that the first acting force is a magnetic repulsive force, F2 indicates that the first acting force is a magnetic attractive force, and θ indicates the deployment angle of the first synchronous swing arm 51, wherein, when the rotating mechanism 100 is in the deployed state, the deployment angle θ of the first synchronous swing arm 51 can be 90°, and when the rotating mechanism 100 is in the folded state, the deployment angle θ of the first synchronous swing arm 51 can be 0°. The deployment process refers to the process of the rotating mechanism 100 switching from the folded state to the deployed state, and the folding process refers to the process of the rotating mechanism 100 switching from the deployed state to the folded state. Figure 18 As shown, when the rotating mechanism 100 is in the folded state, the first acting force is a magnetic repulsive force. During the process of switching the rotating mechanism 100 from the folded state to the intermediate state and then to the unfolded state, the first acting force may first increase and then decrease. When the rotating mechanism 100 is in the unfolded state, the first acting force is a magnetic repulsive force. During the process of switching the rotating mechanism 100 from the unfolded state to the intermediate state and then to the folded state, the first acting force may first increase and then decrease.

[0143] Figure 19 yes Figure 6 FIG. 1 is another diagram showing another change process of the first acting force between the first electromagnet 63 and the first magnetic member 61 of the rotating mechanism 100 during the process of switching from the folded state to the unfolded state.

[0144] See also Figure 19In a specific application scenario, the rotating mechanism 100 has a hovering state, F1 indicates that the first acting force is a magnetic repulsive force, F2 indicates that the first acting force is a magnetic attractive force, and θ indicates the deployment angle of the first synchronous swing arm 51, wherein when the rotating mechanism 100 is in the deployed state, the deployment angle θ of the first synchronous swing arm 51 can be 90°, and when the rotating mechanism 100 is in the folded state, the deployment angle θ of the first synchronous swing arm 51 can be 0°. The deployment process refers to the process of the rotating mechanism 100 switching from the folded state to the deployed state, and the folding process refers to the process of the rotating mechanism 100 switching from the deployed state to the folded state. The hovering process refers to the process in which the rotating mechanism 100 can stop within a preset angle range. As Figure 19 As shown, when the rotating mechanism 100 is in the folded state, the first acting force is a magnetic repulsive force. During the process of switching the rotating mechanism 100 from the folded state to the intermediate state and then to the unfolded state, the first acting force may first increase and then decrease. When the rotating mechanism 100 is in the unfolded state, the first acting force is a magnetic repulsive force. During the process of switching the rotating mechanism 100 from the unfolded state to the intermediate state and then to the folded state, the first acting force may first increase and then decrease.

[0145] It is understood that the first force between the first magnetic member 61 and the first electromagnet 63 can serve as a source of damping force when the rotating mechanism 100 is folded. When the first force is equal to the folding force required for the rotating mechanism 100 to fold, the rotating mechanism 100 can achieve a hovering function. Since the first force can change with the change in the rotation angle of the first synchronous swing arm 51 relative to the base 10, at each folding angle, the first force corresponding to the folding angle can be equal to the folding force required for the rotating mechanism 100 to fold to the folding angle. Therefore, by controlling and adjusting the magnitude of the first force, the rotating mechanism 100 can achieve multi-angle hovering, and the electronic device 400 can be stopped at multiple angles.

[0146] Under this setting, the magnetic force between the first electromagnet 63 and the first magnetic member 61 is used as the damping force source of the rotating mechanism 100. By controlling the balance between the first acting force and the folding force required for the folding of the rotating mechanism 100, the damping force of the rotating mechanism 100 can be effectively controlled and the hovering function can be effectively achieved. On the one hand, the electromagnet current at different folding angles can be adjusted based on the user's hand feel requirements to achieve the best folding feel. On the other hand, it can effectively avoid the problems in the prior art of using a concave cam and a spring to squeeze each other to provide damping force, resulting in uncontrollable damping force, an increase in the number of parts, an increase in the overall weight of the device, an increase in cost, and an impact on the user's hand feel when folding. It has excellent reliability.

[0147] Please refer again Figure 14The second magnetic member 62 is arranged at the end of the second synchronous swing arm 52 away from the base 10, that is, the second magnetic member 62 is arranged at the second sliding end 522 of the second synchronous swing arm 52. The second magnetic member 62 can follow the sliding movement of the second sliding end 522 in the second sliding groove 32 of the second fixed plate 30, and also slide in the second sliding groove 32.

[0148] The second electromagnet 64 is disposed in the second receiving groove 33 of the second fixing plate 30 . The second electromagnet 64 may include a second magnetic core 641 and a second coil 642 . The second coil 642 is wound around the second magnetic core 641 .

[0149] In the embodiment of the present application, a second force is exerted between the second magnetic member 62 and the second electromagnet 64, and the second force can serve as a damping force source for the rotating mechanism 100. The magnitude and direction of the second force change as the rotation angle of the second synchronous swing arm 52 relative to the base 10 changes. The change in the direction of the second force means that the second force can include both the magnetic attraction force generated by the attraction between the second magnetic member 62 and the second electromagnet 64, and the magnetic repulsion force generated by the repulsion between the second magnetic member 62 and the second electromagnet 64, and the directions of the magnetic attraction force and the magnetic repulsion force are opposite.

[0150] By using the second force generated by the cooperation between the second magnetic member 62 and the second electromagnet 64 as the damping force source of the rotating mechanism 100, compared with the prior art arrangement of providing damping force by a concave cam and a spring, on the one hand, the second magnetic member 62 and the second electromagnet 64 can be fixed by the structure of the rotating mechanism 100 itself (such as the second synchronous swing arm 52 fixing the second magnetic member 62, and the second fixing plate 30 fixing the second electromagnet 64), without the need for additional structural members to fix the second magnetic member 62 and the second electromagnet 64. The rotating mechanism 100 has fewer parts, which helps to reduce the weight of the rotating mechanism 100, reduce the cost of the rotating mechanism 100, and rationally utilize the spatial layout of the rotating mechanism 100. On the other hand, the second magnetic member 62 and the second electromagnet 64 are easy to process and assemble, which helps to reduce the difficulty of assembling the rotating mechanism 100.

[0151] In an embodiment of the present application, the second electromagnet 64 is capable of generating a second current when energized. The magnitude of the second current can be continuously variable, providing different magnitudes of the second current in accordance with the rotation angle of the second synchronous swing arm 52 relative to the base 10, so that the second force at each angle is equal to the folding force required for folding the rotating mechanism 100, thereby enabling the hovering function of the rotating mechanism 100 at each angle. The folding force required for folding the rotating mechanism 100 can be an external force that reacts to the folding / unfolding of the rotating mechanism 100, such as a force applied by a user to the rotating mechanism 100 to cause it to fold / unfold, the weight of the rotating mechanism 100, the weight of the electronic device 400, or other external forces that react to the folding / unfolding of the rotating mechanism 100.

[0152] The positive and negative directions of the second current can also change, thereby changing the magnetism of the second electromagnet 64. Specifically, the second electromagnet 64 can be energized to generate magnetism that attracts the second magnetic member 62, or it can be energized to generate magnetism that repels the second magnetic member 62. For example, when the second electromagnet 64 is energized to generate magnetism that attracts the second magnetic member 62, the direction of the second current can be positive. When the second electromagnet 64 is energized to generate magnetism that repels the second magnetic member 62, the direction of the second current can be negative.

[0153] Under this setting, the magnetism of the second electromagnet 64 is controlled by the second current, which can effectively avoid the fatigue effect of the spring caused by the use of a concave cam and a spring to squeeze the damping force in the prior art, and can prevent the damping force of the rotating mechanism 100 from having a downward trend, which is beneficial to improving the user's damping feel when the rotating mechanism 100 is folded.

[0154] In a specific application scenario, the second electromagnet 64 includes a fifth magnetic pole and a sixth magnetic pole. The fifth magnetic pole is the magnetic pole of the second electromagnet 64 facing the second magnetic member 62, and the sixth magnetic pole is the magnetic pole of the second electromagnet 64 away from the second magnetic member 62. The second magnetic member 62 includes a seventh magnetic pole and an eighth magnetic pole. The seventh magnetic pole is the magnetic pole of the second magnetic member 62 facing the second electromagnet 64, and the eighth magnetic pole is the magnetic pole of the second magnetic member 62 away from the second electromagnet 64. The seventh magnetic pole is the north pole, and the eighth magnetic pole is the south pole. When the direction of the second current is positive, the fifth magnetic pole is the south pole and the sixth magnetic pole is the north pole. As a result, the second force is a magnetic attraction due to the effect of opposite charges attracting. When the direction of the second current is negative, the fifth magnetic pole is the north pole and the sixth magnetic pole is the south pole. As a result, the second force is a magnetic repulsion due to the effect of like charges repelling.

[0155] Please refer to Figure 15 、 Figure 16 and Figure 17Since the second synchronous swing arm 52 can rotate relative to the base 10, while the second synchronous swing arm 52 rotates relative to the base 10, the second sliding end 522 of the second synchronous swing arm 52 will slide in the second slide groove 32 of the second fixed plate 30, so the second magnetic member 62 will be driven to slide in the second slide groove 32, so that the distance between the second magnetic member 62 and the second electromagnet 64 can continuously change, and the second magnetic member 62 approaches the second electromagnet 64 or moves away from the second electromagnet 64.

[0156] Specifically, when the rotating mechanism 100 is in the deployed state, the distance between the second magnetic member 62 and the second electromagnet 64 is the shortest. During the process of switching the rotating mechanism 100 from the deployed state to the intermediate state, the distance between the second magnetic member 62 and the second electromagnet 64 gradually increases. When the rotating mechanism 100 is in the folded state, the distance between the second magnetic member 62 and the second electromagnet 64 is the farthest. That is, during the process of switching the rotating mechanism 100 from the deployed state to the folded state, the distance between the second magnetic member 62 and the second electromagnet 64 continues to increase, and during the process of switching the rotating mechanism 100 from the folded state to the deployed state, the distance between the second magnetic member 62 and the second electromagnet 64 continues to decrease.

[0157] For example, during the process of the rotating mechanism 100 switching from the folded state to the intermediate state and then to the unfolded state, the second force may first increase and then decrease. During the process of the rotating mechanism 100 switching from the unfolded state to the intermediate state and then to the folded state, the second force may first increase and then decrease.

[0158] When the rotating mechanism 100 is in the folded state, a second folded state magnetic force is generated between the second magnetic member 62 and the second electromagnet 64. When the rotating mechanism 100 is in the unfolded state, a second unfolded state magnetic force is generated between the second magnetic member 62 and the second electromagnet 64.

[0159] When the rotating mechanism 100 is in the folded state, the direction of the second current can be the negative direction, and the second force can be the magnetic repulsion force, that is, the second folded state magnetic force is the magnetic repulsion force. When the rotating mechanism 100 is in the unfolded state, the direction of the second current can be the positive direction, and the second force can be the magnetic attraction force, that is, the second folded state magnetic force is the magnetic attraction force. For example, when the rotation angle of the second synchronous swing arm 52 relative to the base 10 is in the range of 0° to 45°, the second force is the magnetic attraction force. When the rotation angle of the second synchronous swing arm 52 relative to the base 10 is in the range of 45° to 90°, the second force is the magnetic repulsion force. Among them, when the rotating mechanism 100 is in the unfolded state, the rotation angle of the second synchronous swing arm 52 relative to the base 10 is 0°, and when the rotating mechanism 100 is in the folded state, the rotation angle of the second synchronous swing arm 52 relative to the base 10 is 90°.

[0160] It should be noted that when the rotating mechanism 100 is in the folded state, the second force is not limited to magnetic repulsion and can also be magnetic attraction. When the rotating mechanism 100 is in the unfolded state, the second force is not limited to magnetic attraction and can also be magnetic repulsion. The specific implementation form of the second force can be selected according to the actual application scenario of the rotating mechanism 100 and is not strictly limited in this regard in the embodiments of the present application.

[0161] In the embodiment of the present application, the magnetic flux of the second electromagnet 64 is a second magnetic flux, and the magnitude of the second magnetic flux is positively correlated with the magnitude of the second acting force. That is, the greater the second magnetic flux, the greater the second acting force. The smaller the second magnetic flux, the smaller the second acting force, and vice versa. The magnitude of the second magnetic flux varies with the rotation angle of the second synchronous swing arm 52 relative to the base 10.

[0162] The magnitude of the magnetic induction intensity of the second electromagnet 64, and thus the magnitude of the second magnetic flux, can be controlled by controlling the magnitude of the second current flowing through the second electromagnet 64. The greater the second current, the greater the magnetic induction intensity of the second electromagnet 64 and the greater the second magnetic flux, and vice versa.

[0163] It should be noted that the magnitude and direction of the second force can vary with the rotation angle of the second synchronous swing arm 52 relative to the base 10. If the external force acting on the rotating mechanism 100 causes the folding angle of the rotating mechanism 100 to change too rapidly and exceeds the preset hovering range of the rotating mechanism 100, it can be determined that the user does not need to rotate the mechanism 100 to achieve hovering, and the rotating mechanism 100 can be prevented from hovering. For example, the preset angle range can be within the range of 30°-150°. When the second force is equal to the folding force required to fold the rotating mechanism 100, the rotating mechanism 100 can achieve hovering.

[0164] Figure 20 yes Figure 6 The diagram shows a change process of the second acting force between the second electromagnet 64 and the second magnetic member 62 of the rotating mechanism 100 during the process of switching from the folded state to the unfolded state.

[0165] See also Figure 20In a specific application scenario, the rotating mechanism 100 is not in a hovering state, F3 indicates that the second force is a magnetic repulsive force, F4 indicates that the second force is a magnetic attractive force, and θ indicates the deployment angle of the second synchronous swing arm 52, wherein when the rotating mechanism 100 is in the deployed state, the deployment angle θ of the second synchronous swing arm 52 can be 90°, and when the rotating mechanism 100 is in the folded state, the deployment angle θ of the second synchronous swing arm 52 can be 0°. The deployment process refers to the process of the rotating mechanism 100 switching from the folded state to the deployed state, and the folding process refers to the process of the rotating mechanism 100 switching from the deployed state to the folded state. Figure 20 As shown, when the rotating mechanism 100 is in the folded state, the second acting force is a magnetic repulsive force. During the process of switching the rotating mechanism 100 from the folded state to the intermediate state and then to the unfolded state, the second acting force may first increase and then decrease. When the rotating mechanism 100 is in the unfolded state, the second acting force is a magnetic repulsive force. During the process of switching the rotating mechanism 100 from the unfolded state to the intermediate state and then to the folded state, the second acting force may first increase and then decrease.

[0166] Figure 21 yes Figure 6 FIG. 1 is another diagram showing another change process of the second acting force between the second electromagnet 64 and the second magnetic member 62 of the rotating mechanism 100 during the process of switching from the folded state to the unfolded state.

[0167] See also Figure 21 In a specific application scenario, the rotating mechanism 100 has a hovering state, F3 indicates that the second force is a magnetic repulsive force, F4 indicates that the second force is a magnetic attractive force, and θ indicates the expansion angle of the second synchronous swing arm 52, wherein when the rotating mechanism 100 is in the expanded state, the expansion angle θ of the second synchronous swing arm 52 can be 90°, and when the rotating mechanism 100 is in the folded state, the expansion angle θ of the second synchronous swing arm 52 can be 0°. The expansion process refers to the process of the rotating mechanism 100 switching from the folded state to the expanded state, and the folding process refers to the process of the rotating mechanism 100 switching from the expanded state to the folded state. The hovering process refers to the process in which the rotating mechanism 100 can stop in a preset angle range. As Figure 21 As shown, when the rotating mechanism 100 is in the folded state, the second acting force is a magnetic repulsive force. During the process of switching the rotating mechanism 100 from the folded state to the intermediate state and then to the unfolded state, the second acting force may first increase and then decrease. When the rotating mechanism 100 is in the unfolded state, the second acting force is a magnetic repulsive force. During the process of switching the rotating mechanism 100 from the unfolded state to the intermediate state and then to the folded state, the second acting force may first increase and then decrease.

[0168] It is understood that the second force between the second magnetic member 62 and the second electromagnet 64 can serve as a source of damping force when the rotating mechanism 100 is folded. When the second force is equal to the folding force required to fold the rotating mechanism 100, the rotating mechanism 100 can achieve a hovering function. Because the second force can change with the change in the rotation angle of the second synchronous swing arm 52 relative to the base 10, at each folding angle, the second force corresponding to the folding angle can be equal to the folding force required to fold the rotating mechanism 100 to that folding angle. Therefore, by controlling the magnitude of the second force, the rotating mechanism 100 can achieve multi-angle hovering, and the electronic device 400 can be stopped at multiple angles.

[0169] Under this setting, the magnetic force between the second electromagnet 64 and the second magnetic member 62 is used as the damping force source of the rotating mechanism 100. By controlling the balance between the second force and the folding force required for the folding of the rotating mechanism 100, the damping force of the rotating mechanism 100 can be effectively controlled and the hovering function can be effectively achieved. On the one hand, the electromagnet current at different folding angles can be adjusted based on the user's hand feel requirements to achieve the best folding feel. On the other hand, it can effectively avoid the problems in the prior art of using a concave cam and a spring to squeeze each other to provide damping force, resulting in uncontrollable damping force, an increase in the number of parts, an increase in the overall weight of the device, an increase in cost, and an impact on the user's hand feel when folding. It has good reliability.

[0170] Figure 22 for Figure 6 FIG. 1 is a schematic top view of a partial structure of the rotating mechanism 100 .

[0171] See also Figure 22 The plurality of first displacement sensors 70 are accommodated in the third receiving slots 24 of the plurality of first fixing plates 20 in a one-to-one correspondence. Each first displacement sensor 70 is partially located within the first chute 22 and partially located within one of the third receiving slots 24. This allows the first protrusion 513 to contact all of the plurality of first displacement sensors 70 as it slides within the first chute 22 following the first synchronous swing arm 51. For example, the first displacement sensor 70 may be a displacement spring that deforms upon contact with the first protrusion 513.

[0172] The plurality of second displacement sensors 80 are housed in a one-to-one correspondence within the fourth receiving slots 34 of the plurality of second fixing plates 30. Each second displacement sensor 80 is partially located within the second chute 32 and partially located within one of the fourth receiving slots 34. This allows the second protrusion 523 to contact all of the plurality of second displacement sensors 80 as it slides within the second chute 32 following the second synchronous swing arm 52. For example, the second displacement sensor 80 may be a displacement spring that deforms upon contact with the second protrusion 523.

[0173] Figure 23 yes Figure 6 The schematic diagram of the partial structure of the rotating mechanism 100 shown is in the unfolded state. Figure 24 yes Figure 6 The schematic diagram of the partial structure of the rotating mechanism 100 shown is in an intermediate state. Figure 25 yes Figure 6 The partial structural diagram of the rotating mechanism 100 shown is in another intermediate state. Figure 26 yes Figure 6 The schematic diagram of the partial structure of the rotating mechanism 100 shown is in the folded state. Figures 19-22 During the change process, the rotation angle of the first synchronous swing arm 51 relative to the base 10 becomes larger and larger, and the rotation angle of the second synchronous swing arm 52 relative to the base 10 becomes larger and larger.

[0174] Please refer to Figure 23-26 , it can be seen that the smaller the rotation angle of the first synchronous swing arm 51 relative to the base 10, the closer the first displacement sensor 70 in contact with the first protrusion 513 is to the first electromagnet 63, and vice versa. The smaller the rotation angle of the second synchronous swing arm 52 relative to the base 10, the closer the second displacement sensor 80 in contact with the first protrusion 513 is to the second electromagnet 64, and vice versa. Specifically, when the rotating mechanism 100 is in the deployed state, the rotation angle of the first synchronous swing arm 51 and the second synchronous swing arm 52 relative to the base 10 is the smallest, and when the rotating mechanism 100 is in the folded state, the rotation angle of the first synchronous swing arm 51 and the second synchronous swing arm 52 relative to the base 10 is the largest.

[0175] In the embodiment of the present application, the first force may first decrease and then increase during the process of the rotating mechanism 100 switching from the folded state to the intermediate state and then to the unfolded state. The first force may first decrease and then increase during the process of the rotating mechanism 100 switching from the unfolded state to the intermediate state and then to the folded state.

[0176] The controller is electrically connected to the second electromagnet 64 and multiple second displacement sensors 80. Each second displacement sensor 80 is configured to generate a displacement detection signal upon contact with the second protrusion 523 and transmit it to the controller. The controller is configured to adjust the magnitude of the second current based on the received displacement detection signal to achieve an optimal damping feel during the folding and unfolding of the rotating mechanism 100. The displacement detection signals generated by different second displacement sensors 80 can be the same or different. For example, the second current is higher when the rotating mechanism 100 is in the folded and unfolded states.

[0177] The above is a detailed introduction to the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of the present application. At the same time, for those skilled in the art, according to the idea of the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A rotating mechanism, characterized in that: The rotating mechanism includes a base, a first fixed plate, a second fixed plate, a first synchronous swing arm, a second synchronous swing arm, a first magnetic member, a second magnetic member, a first electromagnet, and a second electromagnet; The first fixing plate and the second fixing plate are located on both sides of the base, the first fixing plate is provided with a first receiving groove, the first electromagnet is provided in the first receiving groove, the second fixing plate is provided with a second receiving groove, the second electromagnet is provided in the second receiving groove; The first synchronous swing arm and the second synchronous swing arm are located on both sides of the base, the first synchronous swing arm is rotatably connected to the base and slidably connected to the first fixed plate, and the second synchronous swing arm is rotatably connected to the base and slidably connected to the second fixed plate; The first magnetic member is provided at an end of the first synchronous swing arm away from the base, and a first acting force is exerted between the first magnetic member and the first electromagnet, wherein the magnitude of the first acting force varies with a rotation angle of the first synchronous swing arm relative to the base; The second magnetic member is arranged at one end of the second synchronous swing arm away from the base. There is a second force between the second magnetic member and the second electromagnet, and the magnitude of the second force changes with the change of the rotation angle of the second synchronous swing arm relative to the base.

2. The rotating mechanism according to claim 1, wherein: The rotating mechanism includes a folded state, the first acting force includes a first folded state magnetic force, the second acting force includes a second folded state magnetic force, the first folded state magnetic force is a magnetic repulsive force, and the second folded state magnetic force is a magnetic repulsive force.

3. The rotating mechanism according to any one of claims 1 or 2, characterized in that: The rotating mechanism includes an expanded state, the first acting force includes a first expanded state magnetic force, the second acting force includes a second expanded state magnetic force, the first expanded state magnetic force is a magnetic attraction, and the second expanded state magnetic force is a magnetic attraction.

4. The rotating mechanism according to any one of claims 1 to 3, characterized in that: The first synchronous swing arm includes a first sliding end, the first magnetic member is disposed on the first sliding end, the first fixing plate is provided with a first sliding groove, the first sliding groove is connected to the first receiving groove, and the first sliding end is capable of sliding in the first sliding groove to move the first magnetic member closer to or away from the first electromagnet; The second synchronous swing arm includes a second sliding end, the second magnetic member is arranged at the second sliding end, the second fixed plate is provided with a second sliding groove, the second sliding groove is connected to the second receiving groove, and the second sliding end can slide in the second sliding groove to make the second magnetic member approach the second electromagnet or move away from the second electromagnet.

5. The rotating mechanism according to claim 4, wherein: The rotating mechanism further includes a plurality of first displacement sensors and a plurality of second displacement sensors; The plurality of first displacement sensors are provided on the first fixed plate and spaced apart along the length direction of the first slide groove, with at least a portion of each first displacement sensor being located within the first slide groove. A first protrusion is provided on a side surface of the first sliding end, and the first protrusion is capable of sliding within the first slide groove to contact the plurality of first displacement sensors. The multiple second displacement sensors are arranged on the second fixed plate and are spaced apart along the length direction of the second slide groove. At least a portion of each second displacement sensor is located in the second slide groove. A second protrusion is provided on the side of the second sliding end. The second protrusion can slide in the second slide groove to contact the multiple second displacement sensors.

6. The rotating mechanism according to claim 5, wherein: The smaller the rotation angle of the first synchronous swing arm relative to the base is, the closer the first displacement sensor in contact with the first protrusion is to the first electromagnet; The smaller the rotation angle of the second synchronous swing arm relative to the base is, the closer the second displacement sensor in contact with the first protrusion is to the second electromagnet.

7. The rotating mechanism according to any one of claims 5 or 6, characterized in that: The first electromagnet generates a first current when it is energized, and the second electromagnet generates a second current when it is energized. The rotating mechanism further includes a controller; The controller is electrically connected to the first electromagnet and the plurality of first displacement sensors, each of the first displacement sensors is configured to generate a displacement detection signal and transmit the signal to the controller when in contact with the first protrusion, and the controller is configured to adjust the magnitude of the first current according to the received displacement detection signal; The controller is electrically connected to the second electromagnet and multiple second displacement sensors. Each of the second displacement sensors is used to generate a displacement detection signal and transmit it to the controller when it contacts the second protrusion. The controller is used to adjust the magnitude of the second current according to the received displacement detection signal.

8. The rotating mechanism according to any one of claims 1 to 7, characterized in that: The rotating mechanism also includes a synchronous gear, which is connected between the first sliding end of the first synchronous swing arm and the second sliding end of the second synchronous swing arm. The first synchronous swing arm rotates relative to the base, and the second synchronous swing arm is driven to rotate relative to the base through the synchronous gear.

9. The rotating mechanism according to any one of claims 1 to 8, characterized in that: The magnetic flux of the first electromagnet is a first magnetic flux, the magnitude of the first magnetic flux is positively correlated with the magnitude of the first force, and the magnitude of the first magnetic flux changes with the change of the rotation angle of the first synchronous swing arm relative to the base; The magnetic flux of the second electromagnet is a second magnetic flux, the magnitude of the second magnetic flux is positively correlated with the magnitude of the second force, and the magnitude of the second magnetic flux changes with the change of the rotation angle of the second synchronous swing arm relative to the base.

10. An electronic device, characterized in that: The electronic device includes a first shell, a second shell, and the rotation mechanism according to any one of claims 1 to 9, wherein the rotation mechanism is connected between the first shell and the second shell.

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