Electronic device

Abstract

The invention discloses electronic equipment, and belongs to the technical field of terminals. The hinge assembly comprises at least two frame bodies, a hinge assembly and a screen assembly, the frame bodies are rotationally connected through the hinge assembly, so that the electronic equipment has an unfolded state and a folded state, the screen assembly is arranged on one side of the frame bodies, and the area, opposite to the hinge assembly, of the screen assembly is a bent area; wherein the hinge assembly comprises a rotating assembly, a transmission mechanism and fan blades, the fan blades are in transmission connection with the rotating assembly through the transmission mechanism, and in the process that the electronic equipment is switched between the folding state and the unfolding state, the rotating assembly drives the fan blades to rotate through the transmission mechanism; therefore, the air pressure between the hinge assembly and the bending area is reduced.

Description

Technical Field

[0001] The present application belongs to the field of terminal technology, and specifically relates to an electronic device. Background Art

[0002] Currently, a foldable screen terminal refers to a terminal with a foldable screen, among which foldable screen terminals are widely popular because the display size of their screens is adjustable.

[0003] For example, Figure 1 As shown, the foldable screen terminal may include: a first frame, a second frame, a hinge assembly and a flexible screen, wherein the first frame and the second frame are movably connected via the hinge assembly, and the flexible screen is disposed on the first frame and the second frame. When the foldable screen terminal is folded, since there is a gap between the flexible screen and the hinge assembly, the area of ​​the flexible screen corresponding to the hinge assembly may be arched, which affects the display effect of the flexible screen and reduces the service life of the flexible screen. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide an electronic device that can prevent the screen assembly of the electronic device from arching during the folding process, thereby increasing the service life of the screen assembly.

[0005] In the first aspect, an embodiment of the present application provides a hinge assembly, which includes: at least two frames, a hinge assembly and a screen assembly, the frames are rotatably connected through the hinge assembly so that the electronic device has an unfolded state and a folded state, the screen assembly is arranged on one side of the frame, and the area where the screen assembly and the hinge assembly are opposite to each other is a bending zone; wherein the hinge assembly includes a rotating assembly, a transmission mechanism and a fan blade, the fan blade is transmission-connected to the rotating assembly through the transmission mechanism, and during the process of switching the electronic device between the folded state and the unfolded state, the rotating assembly drives the fan blade to rotate through the transmission mechanism to reduce the air pressure between the hinge assembly and the bending zone.

[0006] In the embodiment of the present application, since at least two frames are rotatably connected by a hinge assembly, the hinge assembly includes a rotating assembly, a transmission mechanism and a fan blade, and the fan blade is transmission-connected to the rotating assembly by the transmission mechanism, the rotating assembly can drive the fan blade to rotate through the transmission mechanism during the switching of the electronic device between the folded state and the unfolded state, so that the air pressure between the hinge assembly and the screen area corresponding to the bending zone of the hinge assembly is reduced, so that the bending zone can be close to the hinge assembly under the action of the ambient air pressure, avoiding the screen assembly from arching back during the switching of the screen state of the electronic device. In this way, the display effect and service life of the screen assembly can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1It is a structural schematic diagram of a folding screen device in the related art;

[0008] Figure 2 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application;

[0009] Figure 3 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application;

[0010] Figure 4 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application;

[0011] Figure 5 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application;

[0012] Figure 6 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application;

[0013] Figure 7 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application;

[0014] Figure 8 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application;

[0015] Fig. 9 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application;

[0016] in, Figures 2 to 9 The reference numerals in the figures are as follows:

[0017] 100 electronic device, 10 frame, 20 hinge assembly, 30 screen assembly, 21 rotating assembly, 211 swing arm mechanism, 41 synchronous swing arm, 411 half gear, 42 supporting swing arm, 43 rotating shaft, 44 second cam, 212 synchronous mechanism, 213 damping mechanism, 61 spring group, first cam 62, 63 gear shaft, 22 transmission mechanism, 221 driving wheel, 222 driven wheel, 23 fan blade, 24 substrate, 25 supporting swing arm bracket, 64 second rotating shaft, 65 first rotating shaft. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0019] The nouns and terms in the specification of this application are explained below.

[0020] Flexible screen: a screen that can be bent and rolled. Flexible screens are widely used due to their low power consumption and bendability. The flexible screen may include a flexible substrate and a flexible light-emitting element mounted on the flexible substrate.

[0021] For example, the light emitting element may be an organic electroluminescence display (OLED).

[0022] The terms "first", "second", etc. in the specification of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0023] The present application embodiment provides an electronic device, such as Figure 2 As shown, the electronic device 100 may include at least two frames 10, a hinge assembly 20 and a screen assembly 30. The frames 10 are rotatably connected through the hinge assembly 20 so that the electronic device 100 has an unfolded state and a folded state. The screen assembly 30 is arranged on one side of each frame 10, and the area where the screen assembly 30 and the hinge assembly 20 are opposite is a bending area. The hinge assembly 20 includes a rotating assembly 21, a transmission mechanism 22 and a fan blade 23. The fan blade 23 is transmission-connected to the rotating assembly 21 through the transmission mechanism 22.

[0024] In the process of switching the electronic device 100 between the folded state and the unfolded state, the rotating component 21 can drive the fan blades 23 to rotate through the transmission mechanism 22, so as to reduce the air pressure between the hinge component 20 and the bending area.

[0025] It should be noted that the switching of the electronic device between the folded state and the unfolded state may include at least one of the following: the electronic device switches from the folded state to the unfolded state, and the electronic device switches from the unfolded state to the folded state.

[0026] Specifically, during the process of switching the electronic device from the unfolded state to the folded state, the rotating assembly can drive the fan blades to rotate through the transmission mechanism to reduce the air pressure between the hinge assembly and the bending zone, so that the ambient air pressure can exert an extrusion force on the bending zone. This can prevent the bending zone from arching away from the hinge assembly during the folding of the electronic device, i.e., reverse arching, thereby preventing leakage and abnormal noise in the bending zone of the screen assembly.

[0027] In some embodiments of the present application, every two adjacent frames of the at least two frames are rotatably connected via a hinge assembly, and the screen assembly is located on the same side of the at least two frames.

[0028] During the process of switching the electronic device from a folded state to an unfolded state, the rotating assembly drives the fan blades to rotate through the transmission mechanism to reduce the air pressure between the hinge assembly and the bending area, so that the ambient air pressure can exert an extrusion force on the bending area, making the bending area closer to the hinge assembly. In this way, when the electronic device switches to the unfolded state, the connection between the bending area and other areas of the screen assembly can be smoother.

[0029] In some embodiments of the present application, since the hinge assembly includes a fan blade, and the bending area corresponds to the hinge assembly, the rotation of the fan blade can form a micro-airflow between the hinge area and the bending area, and the greater the rotation speed of the fan blade, the greater the airflow speed. According to the Bernoulli equation, the greater the airflow speed, the lower the pressure. Therefore, the airflow generated by the rotation of the fan blade can form a negative pressure area between the hinge assembly and the bending area, so that the ambient air pressure applies a pressure to the screen assembly, so as to avoid the screen assembly from arching. And the greater the rotation speed of the fan blade, the lower the pressure between the bending area and the hinge assembly.

[0030] In some embodiments of the present application, the rotating assembly can provide torque to the fan blades through the transmission mechanism, so the transmission mechanism can provide a precise speed ratio for the fan blades, so that the rotation speed of the fan blades is consistent with the rotation speed of the rotating assembly. That is, when the rotation speed of the rotating assembly increases, the rotation speed of the fan blades also increases; when the rotation speed of the rotating assembly decreases, the rotation speed of the fan blades also decreases. In this way, it can be ensured that the flow rate of the micro-airflow generated by the fan blades matches the rotation speed of the rotating assembly.

[0031] It can be understood that the electronic device provided in the embodiment of the present application utilizes the folding or unfolding movement of the electronic device to drive the fan blade to move, thereby reducing the air pressure between the bending area and the hinge assembly, so that the external atmospheric pressure prevents the bending area from being reversed or arched during the unfolding or folding process of the electronic device. In this way, the reliability of the screen assembly can be improved.

[0032] In some embodiments of the present application, the above-mentioned screen assembly may include a flexible screen, or the screen assembly may include at least two rigid screens and at least one flexible screen, and each two adjacent rigid screens are fixedly connected by a flexible screen, and the flexible screen is opposite to a hinge assembly.

[0033] It should be noted that the folding and unfolding movement of the electronic device is organically combined with the rotation of the fan blades through the transmission mechanism, so that there is no need to provide additional driving force for the fan blades, thereby simplifying the structure of the electronic device and reducing costs.

[0034] In some embodiments of the present application, Figure 2 , 3 As shown in FIG. 4 , the fan blade 23 is connected to the second end of the outermost swing arm mechanism 21 of the at least two pairs of swing arm mechanisms 21 through the rotating mechanism 22, and the fan blade is located on the side of the swing arm mechanism 21 facing away from the other swing arm mechanisms.

[0035] In some embodiments of the present application, the fan blade may include an impeller and a plurality of fan blades arranged on the impeller.

[0036] In some embodiments of the present application, the fan blades may be Figure 4 The axial flow fan blade shown in 23, Figure 5 One of the radial flow fan blades or centrifugal fan blades shown in 23.

[0037] Among them, when the axial flow fan blades rotate, the fan blades push the air to flow along the axial direction of the impeller, so it is called an axial flow fan. The axial flow fan blades used in the embodiment of the present application are small axial flow fans. It can be understood that the axial flow fan blades are simple and easy to process, and the space required for the whole machine is small, which is conducive to reducing the weight and thickness of the whole machine.

[0038] When the radial fan structure rotates, the fan blades can push the air in a direction perpendicular to the axis of the impeller, that is, the air is blown out from the radial direction of the impeller.

[0039] The centrifugal fan blades rotate to generate centrifugal force, which sucks air in from the axial direction and then throws it out radially.

[0040] In some embodiments of the present application, when the fan blade is an axial flow fan blade, such as Figure 3 and Figure 5 As shown, the rotation axis of the fan blade 23 can be set parallel to the length direction of the hinge assembly 20. In other words, the rotation axis of the fan blade 23 can be set parallel to the rotation axis of the above-mentioned rotating assembly 20.

[0041] In this way, by setting the rotation axis of the fan blade parallel to the length direction of the hinge assembly, the fan blade can generate an airflow flowing along the length direction of the hinge assembly to reduce the air pressure between the hinge assembly and the bending area.

[0042] It should be noted that compared with axial flow fan blades, the direction of the airflow generated by the rotation of the axial flow fan blades is parallel to the rotation axis of the axial flow fan blades. Therefore, when the fan blade speed remains unchanged, the axial flow fan blades can maximize the air flow velocity flowing along the length direction of the bending zone, thereby maximizing the air pressure reduction in the bending zone and the hinge assembly, and the energy conversion efficiency is higher. The radial flow fan blades are simple and have low manufacturing costs.

[0043] In some embodiments of the present application, when the fan blade is a radial fan blade or a centrifugal fan blade, such as Figure 4 and Figure 6 As shown, the rotation axis of the fan blade 23 can be set perpendicular to the rotation axis of the rotating assembly 20, so that part of the airflow generated by the rotation of the fan blade 23 flows along the length direction of the hinge assembly 20 to reduce the air pressure between the hinge assembly 20 and the bending area.

[0044] In this way, since the fan blades can be axial flow blades, radial flow blades or centrifugal blades, the flexibility of setting the fan blades can be improved.

[0045] In some embodiments of the present application, during the switching of the electronic device between the folded state and the unfolded state, the rotating component can drive the fan blades to rotate through the transmission mechanism to provide pneumatic rotation damping for the rotating component.

[0046] It can be understood that the rotation of the fan blades can generate a micro-airflow flowing along the axial direction of the hinge assembly, so the micro-airflow can act as a pneumatic damping to assist the hinge assembly to remain suspended. Since the pneumatic damping comes from non-direct contact force, there is no wear problem, which can greatly extend the service life of the hinge assembly.

[0047] In this way, since the fan blades can rotate during the process of switching the electronic device between the folded state and the unfolded state, a micro-airflow flowing along the rotation axis can be generated. The micro-airflow can provide pneumatic rotation damping for the rotating component. Compared with mechanical damping, pneumatic rotation damping can reduce the wear of the hinge component on the basis of assisting the electronic device to hover, thereby increasing the service life of the hinge component.

[0048] In some embodiments of the present application, during the process of switching the electronic device from the unfolded state to the folded state, the rotating assembly drives the fan blades to rotate through the transmission mechanism, so that the air pressure between the hinge assembly and the bending zone is reduced. In this way, since the fan blades can rotate during the process of switching the electronic device from the unfolded state to the folded state, a micro-airflow can be generated between the hinge assembly and the bending zone, such as a micro-airflow flowing along the rotation axis of the hinge assembly, thereby reducing the air pressure between the hinge assembly and the bending zone, so that the bending zone can be moved closer to the hinge assembly under the action of atmospheric pressure, thereby preventing the bending zone from arching back during the folding of the electronic device.

[0049] In the electronic device provided in the embodiment of the present application, since at least two frames are rotatably connected by a hinge assembly, the hinge assembly includes a rotating assembly, a transmission mechanism and a fan blade, and the fan blade is transmission-connected to the rotating assembly through the transmission mechanism, during the switching of the electronic device between the folded state and the unfolded state, the rotating assembly can drive the fan blade to rotate through the transmission mechanism, so that the air pressure between the hinge assembly and the screen area corresponding to the bending zone of the hinge assembly is reduced, so that the bending zone can be close to the hinge assembly under the action of the ambient air pressure, avoiding the screen assembly from arching back during the switching of the screen state of the electronic device. In this way, the display effect and service life of the screen assembly can be improved.

[0050] In some embodiments of the present application, the rotation of the fan blades generates an airflow flowing along the axial direction of the rotating component to reduce the air pressure between the hinge component and the bending zone; wherein, the greater the flow rate of the airflow flowing along the axial direction, the lower the air pressure between the hinge component and the bending zone.

[0051] In some embodiments of the present application, Figure 6 As shown, the rotating assembly 21 may include at least two swing arm mechanisms 211, the first end of each swing arm mechanism 211 is fixedly connected to a frame 10, and the fan blades 23 may be transmission-connected to the second end of one of the at least two swing arm mechanisms 211 through a transmission mechanism 22; wherein, during the process of the electronic device 100 switching between a folded state and an unfolded state, the one swing arm mechanism 211 rotates, driving the fan blades 23 to rotate through the transmission mechanism 22.

[0052] It can be understood that, during the process of the electronic device being transformed from the unfolded state to the folded state, the two swing arm mechanisms can rotate toward each other, or, during the process of the electronic device being transformed from the folded state to the unfolded state, the two swing arm mechanisms can rotate away from each other.

[0053] In some embodiments of the present application, Figure 6 As shown, each swing arm mechanism 211 may include: a synchronous swing arm 41 and a supporting swing arm 42 fixedly connected to the synchronous swing arm 41 .

[0054] In some embodiments of the present application, the synchronous swing arm and the supporting swing arm in each swing arm mechanism are distributed along the rotation axis of the rotating component.

[0055] In some embodiments of the present application, the first end of the synchronous swing arm and the first end of the supporting swing arm are both connected to the frame, and the transmission mechanism is transmission-connected to the second end of the synchronous swing arm.

[0056] It can be understood that the support swing arm is mainly used to provide support force for the screen assembly such as the screen assembly.

[0057] In some embodiments of the present application, Figure 6As shown, the hinge assembly 20 further includes: a base plate 24 and a support bracket 25, the base plate 24 is fixedly connected to the support bracket 25; two arc grooves (not shown in the figure) are arranged on the support bracket 25, the two arc grooves are arranged in parallel, and the second ends of the two oppositely arranged support swing arms 42 are rotatably connected to the two arc grooves respectively, so that the second end of each support swing arm 42 can rotate along an arc groove; the second end of each synchronous swing arm 41 is rotatably connected to the base plate 24.

[0058] In some embodiments of the present application, the second end of each synchronous swing arm can be fixedly connected to a first rotating shaft, and a mounting hole for the first rotating shaft can be provided on the base plate, and the first rotating shaft can be installed in the mounting hole. For example, a bearing can be provided in the mounting hole, and the rotating shaft can be rotatably connected to the base plate through the bearing.

[0059] It should be noted that, when the hinge assembly includes multiple pairs of swing arm mechanisms, the substrate may include multiple sub-substrates, and each sub-substrate corresponds to a pair of swing arm mechanisms.

[0060] In this way, since the transmission mechanism is transmitted to the second end of a swing arm mechanism, and the first end of the swing arm mechanism is connected to the frame, when the swing arm mechanism drives the frame to rotate synchronously, the torque can be transmitted to the fan blades through the transmission mechanism, thereby driving the fan blades to rotate, thereby improving the reliability of the fan blade rotation.

[0061] In some embodiments of the present application, Figure 5 As shown, the transmission mechanism 22 may include a driving wheel 221 and a driven wheel 222, wherein the driving wheel 221 is in transmission connection with the driven wheel 222. The driving wheel 221 is fixedly connected to the second end of a swing arm mechanism 211 via a first rotating shaft 65, and the fan blade 23 is fixedly connected to the driven wheel 222 via a second rotating shaft 64.

[0062] In the process of switching between the folded state and the unfolded state of the electronic device 100, a swing arm mechanism 211 drives the driving wheel 221 to rotate, drives the driven wheel 222 to rotate, and drives the fan blade 23 to rotate.

[0063] In some embodiments of the present application, Figure 3 , Figure 4 or Figure 6 As shown, a rotating shaft 43 is respectively disposed at the second end of the two oppositely disposed swing arm mechanisms 211, and the driving wheel 221 is fixedly connected to one rotating shaft 43 via the first rotating shaft 65. In the process of switching the electronic device between the folded state and the unfolded state, the one swing arm mechanism 211 drives the driving wheel 221 to rotate, drives the driven wheel 222 to rotate, and drives the fan blades 23 to rotate.

[0064] It can be understood that by providing a driving wheel and a driven wheel, the rotation speed of the fan blade can be distinguished from the rotation speed of the swing arm mechanism.

[0065] In some embodiments of the present application, the transmission ratio between the driving wheel and the driven wheel is less than or equal to 1.

[0066] It can be understood that the greater the transmission ratio between the driving wheel and the driven wheel, the smaller the rotation speed of the driven wheel; and the smaller the transmission ratio between the driving wheel and the driven wheel, the faster the rotation speed of the driven wheel.

[0067] It should be noted that the transmission ratio between the driving wheel and the driven wheel can indicate the ratio of the rotation speed of the rotating component to the rotation speed of the fan blades.

[0068] In some embodiments of the present application, the transmission ratio between the driving wheel and the driven wheel can be determined based on parameters such as the length of the hinge assembly and the size of the gap between the frame and the screen assembly.

[0069] In some embodiments of the present application, the diameter of the driving wheel is greater than or equal to the diameter of the driven wheel, so that the transmission ratio between the driving wheel and the driven wheel is less than or equal to 1.

[0070] In some embodiments of the present application, the first rotating shaft and the rotating shaft arranged at the second end of a swing arm mechanism can be connected through a fixing member, or can be integrally formed.

[0071] For example, the first rotating shaft and the rotating shaft arranged at the second end of a swing arm mechanism are connected via a coupling, or the first rotating shaft and the rotating shaft in a swing arm mechanism are welded.

[0072] In some embodiments of the present application, Figure 5 As shown, the driven wheel 222 can be installed via the second rotating shaft 64. The driven wheel 222 and the second rotating shaft 64 can be fixedly connected, and the second rotating shaft 64 can be rotatably connected to a non-moving structure in the electronic device.

[0073] Specifically, the second rotating shaft 64 can be rotationally connected to a non-moving structure in the electronic device that is opposite to or closest to the driven wheel.

[0074] For example, assuming that the driven wheel is located at one side of the base plate, the second rotating shaft may be rotatably connected to the base plate.

[0075] It can be understood that the fan blades can be fixedly connected to the driven wheel via the second rotating shaft.

[0076] In this way, since the transmission ratio between the driving wheel and the driven wheel is less than or equal to 1, the rotation speed of the driven wheel can be greater than or equal to the rotation speed of the driving wheel, that is, the rotation speed of the fan blade can be greater than or equal to the rotation speed of the rotating component, thereby ensuring the air pressure reduction between the hinge component and the bending zone.

[0077] In some embodiments of the present application, when each swing arm mechanism includes a synchronous swing arm and a supporting swing arm, the driving wheel can be fixedly connected to the synchronous swing arm. For example, the driving wheel is fixedly connected to an end of a first rotating shaft away from the supporting swing arm.

[0078] In this way, since the driving wheel is fixedly connected to the second end of a swing arm mechanism, the driven wheel is fixedly connected to the fan blades, and the driving wheel and the driven wheel are transmission connected, the rotation of the swing arm mechanism can drive the driving wheel to rotate synchronously, thereby driving the fan blades fixedly connected to the driven wheel to rotate, so that the rotation speed of the fan blades can be different from the rotation speed of the swing arm mechanism by setting the transmission ratio between the driving wheel and the driven wheel.

[0079] In some embodiments of the present application, in mode 1, the driving wheel and the driven wheel are both gears;

[0080] Or, in method 2, both the driving wheel and the driven wheel are sprockets, and the driving wheel and the driven wheel are driven by a chain;

[0081] Alternatively, in method 3, both the driving wheel and the driven wheel are pulleys, and the driving wheel and the driven wheel are driven by a transmission belt.

[0082] The above methods 1 to 3 are described below respectively.

[0083] Method 1

[0084] In some embodiments of the present application, in the above-mentioned method 1, as Figure 3 and Figure 5 As shown, the driving wheel 221 and the driven wheel 222 may be spur gears; or Figure 4 and Figure 6 As shown, the driving wheel 221 and the driven wheel 222 may be bevel gears.

[0085] In some embodiments of the present application, Figure 3 and Figure 5 As shown, when the fan blades 23 are axial flow fan blades, the driving wheel and the driven wheel are both spur gears. It can be understood that spur gear transmission has high reliability and can easily achieve different speed ratios by combining different gear sizes.

[0086] In some embodiments of the present application, Figure 4 and Figure 6 As shown, when the fan blades are radial fan blades, the driving wheel and the driven wheel are both bevel gears.

[0087] It can be understood that bevel gear transmission can adapt to larger shaft deviations and position deviations, has stronger transmission reliability, and the rotation axis can be designed in different directions, making the structural design more flexible.

[0088] Reference Figure 6By the cooperation between the bevel gear pairs, the torque direction of the rotating component 21 can be adjusted by 90 degrees.

[0089] Thus, using a bevel gear pair as a transmission mechanism can improve the flexibility of setting the position of the driven wheel relative to the driving wheel. For example, the driven wheel can be fixed on the top, bottom, left or right side of the driving wheel.

[0090] It can be understood that because the bevel gear transmission can adapt to larger shaft deviations and position deviations, the transmission reliability is stronger, and the rotation axis can be designed in different directions, and the structural design is more flexible. And the runoff blades can generate higher wind force at the same speed, the energy conversion efficiency is higher, and the runoff blades are simple and have low manufacturing costs. Therefore, compared with the method of using a spur gear pair + axial flow blade, the method of using a bevel gear pair + runoff blade has higher design flexibility and higher transmission efficiency.

[0091] It can be understood that in mode 1, the transmission ratio between the driving wheel and the driven wheel can be expressed by the gear ratio between the driving wheel and the driven wheel, and the transmission ratio is positively correlated with the gear ratio.

[0092] Thus, in method 1, since the transmission stability and reliability of the gear transmission are relatively high, the gear pair can be used as a transmission mechanism to improve the reliability of the rotating component driving the fan blades to rotate.

[0093] Method 2

[0094] In some embodiments of the present application, in the above-mentioned method 3, the above-mentioned fan blades can be axial flow fan blades.

[0095] It can be understood that in mode 2, the transmission mechanism can be called a chain transmission mechanism. The chain transmission mechanism transmits power through the cooperation between the chain and the sprocket, so the transmission efficiency is higher. Compared with the gear transmission mechanism, the chain transmission mechanism has a longer transmission distance.

[0096] In this way, since the torque of the rotating component can be transmitted to the fan blades through the sprocket transmission mechanism, the transmission reliability of the transmission mechanism can be improved, the spacing between the fan blades and the driving wheel can be set more flexibly, and the transmission efficiency can be improved.

[0097] Method 3

[0098] In some embodiments of the present application, in the above-mentioned method 3, the above-mentioned fan blades are axial flow fan blades.

[0099] It can be understood that in mode 3, the transmission mechanism can be called a belt transmission mechanism. The belt transmission mechanism transmits power through the friction between the belt and the pulley, so the transmission efficiency is higher, the noise is lower, and the transmission distance is longer.

[0100] In this way, since the torque of the rotating component can be transmitted to the fan blades through the belt transmission mechanism, the transmission noise of the transmission mechanism can be reduced and the transmission efficiency can be improved.

[0101] In some embodiments of the present application, Figure 7 As shown, the transmission mechanism may further include a synchronization mechanism 212; the synchronization mechanism 212 is disposed between the relatively disposed swing arm mechanisms 211, and is transmission-connected to the second end of the swing arm mechanism 211 to achieve motion synchronization between the swing arm mechanisms.

[0102] In some embodiments of the present application, the swing arm mechanism connected to the transmission mechanism can rotate driven by the frame connected to the swing arm mechanism; or, the swing arm mechanism connected to the transmission mechanism can rotate driven by the synchronization mechanism; or, the swing arm mechanism connected to the transmission mechanism can rotate driven by the power mechanism.

[0103] In some embodiments of the present application, the power mechanism is transmission-connected to the swing arm mechanism, and the power mechanism may include a motor.

[0104] It should be noted that the synchronization mechanism can achieve motion synchronization between two relatively arranged swing arm mechanisms, so that the two swing arm mechanisms rotate synchronously and in opposite directions.

[0105] In some embodiments of the present application, Figure 7 As shown, the synchronization mechanism 212 can be arranged between two synchronous swing arms 41 that are arranged opposite to each other and is transmission-connected to the second ends of the two synchronous swing arms 41 to achieve motion synchronization between the two swing arm mechanisms 211 .

[0106] In this way, since the two swing arm mechanisms arranged opposite to each other can realize motion synchronization through the synchronization mechanism, the rotation of one of the two swing arm mechanisms can drive the other swing arm mechanism to rotate synchronously and in the opposite direction, so any one of the two swing arm mechanisms can be driven to rotate, so as to drive the transmission mechanism to rotate, thereby driving the fan blades to rotate. In this way, the rotation reliability of the fan blades can be further improved during the switching process of the electronic device between the folded state and the unfolded state.

[0107] In some embodiments of the present application, Figure 7 As shown, the synchronization mechanism 212 may include a gear pair, and the second ends of the two swing arm mechanisms 21 are provided with a half gear 411 with a preset arc; wherein the two swing arm mechanisms 211 are transmission-connected to the gear pair via their respective half gears 411 .

[0108] It can be understood that each half gear meshes with the gear in the gear pair that is close to the half gear, thereby achieving synchronization.

[0109] In some embodiments of the present application, the arc of the half gear may be 90°±A°, where A is a number greater than 0. For example, A may be equal to 0, 1, 1.5, 2, 2.5 or 3.

[0110] In some embodiments of the present application, the second end of each synchronous swing arm may be provided with a half gear meshing with a gear pair.

[0111] In some embodiments of the present application, the synchronization mechanism is rotatably connected to the base plate or the support bracket to achieve the installation of the synchronization mechanism.

[0112] It should be noted that, in the above embodiment, the synchronization mechanism includes a gear pair, that is, two gears. In actual implementation, the synchronization mechanism may also include four gears that are meshed with each other.

[0113] In this way, since a half gear is set at the second end of the two relatively arranged swing arm mechanisms, and the synchronization mechanism includes a gear pair located between the two half gears, synchronization can be achieved through the gear transmission connection between the gear pair and the half gears on the two relatively arranged swing arm mechanisms.

[0114] In some embodiments of the present application, Figure 8 As shown, the hinge assembly 21 may further include a damping mechanism 213; the damping mechanism 213 is sleeved on the rotating shaft 43 of the swing arm mechanism;

[0115] In the process of switching the electronic device between the unfolded state and the folded state, the damping mechanism provides rotation damping for the two swing arm mechanisms.

[0116] It can be understood that the damping mechanism is coaxially arranged with the swing arm mechanism.

[0117] In some embodiments of the present application, each pair of swing arm mechanisms in the at least one pair of swing arm mechanisms may correspond to a damping mechanism respectively.

[0118] It can be understood that the damping mechanism can provide rotational damping for the swing arm mechanism, so that the swing arm mechanism can be stably at a certain folding angle to achieve the suspension of the swing arm mechanism.

[0119] In some embodiments of the present application, when the rotating assembly rotates, at least two pairs of swing arm mechanisms can periodically squeeze the corresponding damping mechanisms, so that the damping mechanisms generate rotational damping on the swing arm mechanisms, and the rotational damping can hinder the rotation of the swing arm mechanisms.

[0120] It can be understood that, since the damping mechanism is sleeved on two rotating shafts, during the rotation of the swing arm mechanism, the damping mechanism performs axial movement, such as extrusion movement, and the damping mechanism does not rotate relative to the rotating shaft.

[0121] In this way, since the damping mechanism is provided in the hinge assembly, the electronic device can be suspended under the action of the damping mechanism, thereby improving the folding and unfolding performance of the electronic device.

[0122] In some embodiments of the present application, Figure 8 As shown, the damping mechanism 213 may include a spring group 61 and two first cams 62 which are sleeved on the rotating shafts 43 of two relatively arranged swing arm mechanisms 211, wherein the two first cams 62 are located between the spring group 61 and the two swing arm mechanisms 211, and different first cams 62 are sleeved on different rotating shafts 43 of the two rotating shafts 43; a second cam 44 is respectively provided at the second end of the two swing arm mechanisms 211, and each second cam 44 cooperates with a first cam 62; wherein, during the rotation of the two swing arm mechanisms 211, each second cam 44 periodically squeezes the spring group 61 through the corresponding first cam 62, so that the spring group 61 periodically generates a thrust on the two first cams 62, so that the two first cams 62 are respectively in close contact with the two second cams 44, so as to provide rotation damping for the two swing arm mechanisms 211.

[0123] It can be understood that the facing ends of the first cam and the second cam are respectively provided with at least two matching latching teeth. During the rotation of the swing arm mechanism, the first cam can be periodically squeezed, so that the first cam can periodically compress the spring group, so that the spring periodically generates elastic force, and the elastic force can provide rotational damping to the swing arm mechanism.

[0124] In some embodiments of the present application, Fig. 9 The spring group 61 may include two first springs 611 sleeved on the rotating shafts 43 of two relatively arranged swing arm mechanisms 211, two second springs 612 located between the two first springs 611, and the two second springs 612 are respectively sleeved on a gear shaft 63 in the synchronization mechanism 212.

[0125] In this way, during the rotation of the swing arm mechanism, since each second cam can periodically squeeze the spring group through the corresponding first cam, the spring group periodically generates elastic force on the two first cams, so that the two first cams are tightly abutted against the two second cams respectively, to provide rotational damping for the swing arm mechanism, thereby achieving stable hovering of the electronic device during folding or unfolding.

[0126] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0127] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0128] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. An electronic device, characterized in that: include: At least two frames, a hinge assembly and a screen assembly, wherein the frames are rotatably connected through the hinge assembly so that the electronic device has an unfolded state and a folded state, the screen assembly is arranged on one side of the frame, and the area where the screen assembly faces the hinge assembly is a bending area; Among them, the hinge assembly includes a rotating assembly, a transmission mechanism and fan blades, and the fan blades are transmission-connected to the rotating assembly through the transmission mechanism. During the switching of the electronic device between the folded state and the unfolded state, the rotating assembly drives the fan blades to rotate through the transmission mechanism to reduce the air pressure between the hinge assembly and the bending area.

2. The electronic device according to claim 1, characterized in that: The rotating assembly comprises at least one pair of swing arm mechanisms, the first end of each swing arm mechanism is fixedly connected to the frame, and the fan blade is transmission-connected to the second end of a swing arm mechanism through the transmission mechanism; Wherein, during the process of the electronic device switching between the folded state and the unfolded state, the one swing arm mechanism drives the fan blades to rotate through the transmission mechanism.

3. The electronic device according to claim 2, characterized in that: The rotating assembly also includes a synchronization mechanism; The synchronization mechanism is arranged between the oppositely arranged swing arm mechanisms and is transmission-connected to the second ends of the swing arm mechanisms to achieve motion synchronization between the swing arm mechanisms.

4. The electronic device according to claim 2 or 3, characterized in that: The transmission mechanism comprises a driving wheel and a driven wheel, wherein the driving wheel is in transmission connection with the driven wheel; The driving wheel is fixedly connected to the second end of the swing arm mechanism via a first rotating shaft, and the fan blade is fixedly connected to the driven wheel via a second rotating shaft; Wherein, during the process of switching the electronic device between the folded state and the unfolded state, the one swing arm mechanism drives the active wheel to rotate, thereby driving the driven wheel to rotate, thereby driving the fan blades to rotate.

5. The electronic device according to claim 4, characterized in that: The transmission ratio between the driving wheel and the driven wheel is less than or equal to 1.

6. The electronic device according to claim 4, characterized in that: The driving wheel and the driven wheel are both gears; Alternatively, the driving wheel and the driven wheel are both sprockets, and the driving wheel and the driven wheel are driven by a chain; Alternatively, the driving wheel and the driven wheel are both pulleys, and the driving wheel and the driven wheel are driven by a transmission belt.

7. The electronic device according to claim 4, characterized in that: The hinge assembly also includes a damping mechanism; The damping mechanism is sleeved on the rotating shaft of the swing arm mechanism; Wherein, during the process of the electronic device switching between the unfolded state and the folded state, the damping mechanism provides rotational damping for the swing arm mechanism.

8. The electronic device according to any one of claims 1 to 3, characterized in that: When the electronic device switches from the unfolded state to the folded state, the rotating assembly drives the fan blades to rotate through the transmission mechanism, so that the air pressure between the hinge assembly and the bending area is reduced.

9. The electronic device according to any one of claims 1 to 3, characterized in that: During the switching of the electronic device between the folded state and the unfolded state, the rotating assembly drives the fan blades to rotate through the transmission mechanism to provide pneumatic rotation damping for the rotating assembly.

10. The electronic device according to any one of claims 1 to 3, characterized in that: The fan blade is one of an axial flow fan blade, a radial flow fan blade or a centrifugal fan blade.

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