Hinge assembly and electronic device

Abstract

This application discloses a hinge assembly and an electronic device. The hinge assembly includes a frame, at least two hinge assemblies, a gear assembly, a first gear, a second gear, and a damping assembly. At least two hinge assemblies are connected to the frame. The gear assembly includes multiple gears that mesh sequentially. Two gears at each end of the gear assembly are respectively connected to the at least two hinge assemblies, enabling the at least two hinge assemblies to rotate synchronously relative to the frame. The first gear is connected to one of the at least two hinge assemblies. The second gear meshes with the first gear. The damping assembly is connected to the second gear. When the at least two hinge assemblies rotate synchronously relative to the frame via the gear assembly, the damping assembly applies resistance to the at least two hinge assemblies through the first and second gears.

Description

Technical Field

[0001] This application belongs to the field of electronic component technology, specifically relating to a hinge assembly and an electronic device. Background Technology

[0002] In related technologies, devices with flexible folding screens are used by many consumers. Flexible folding screens can be unfolded and closed. However, if the flexible folding screen is unfolded and closed quickly during use, the hinge components in the folding screen device can easily be damaged. Summary of the Invention

[0003] This application aims to provide a hinge assembly and electronic device that at least solves one of the problems caused by the rapid unfolding and closing of flexible folding screens, resulting in damage to the hinge assembly in the folding screen device.

[0004] To solve the above-mentioned technical problems, this application is implemented as follows:

[0005] In a first aspect, embodiments of this application provide a hinge assembly, comprising:

[0006] Fixture;

[0007] At least two folding components, and at least two folding components are connected to a mounting frame;

[0008] A gear assembly, comprising multiple gears meshing sequentially, wherein two gears at both ends of the gear assembly are respectively connected to at least two page assemblies, so that at least two page assemblies can rotate synchronously relative to a fixed frame;

[0009] The first gear is connected to one of at least two page assembly components;

[0010] The second gear meshes with the first gear;

[0011] Damping assembly, which is connected to the second gear;

[0012] When at least two page assemblies rotate synchronously relative to the fixed frame via gear assemblies, the damping assembly can apply resistance to at least two page assemblies via the first gear and the second gear.

[0013] Secondly, embodiments of this application provide an electronic device including the hinge assembly described in the first aspect.

[0014] In the embodiments of this application, by setting a damping component and a gear component in the hinge assembly, the damping component can protect both hinge components on both sides at the same time. When the user quickly opens and closes the hinge assembly with the folding screen installed, the damping component, in cooperation with the first gear and the second gear, applies resistance to the hinge assembly, which can prevent the folding screen from rotating too fast during violent opening and closing, thus protecting the hinge assembly of the folding screen and the folding screen itself. In addition, when the folding screen is opened and closed in a normal state, it can provide the user with an appropriate damping feel, thereby reducing the probability of the hinge assembly being opened and closed quickly and reducing the probability of damage to the hinge assembly.

[0015] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of the hinge assembly according to an embodiment of this application;

[0018] Figure 2 This is one of the partial schematic diagrams of a hinge assembly according to an embodiment of this application;

[0019] Figure 3 This is a second partial schematic diagram of a hinge assembly according to an embodiment of this application;

[0020] Figure 4 This is one of the partial schematic diagrams of a damping component according to an embodiment of this application;

[0021] Figure 5 This is a second partial schematic diagram of a damping component according to an embodiment of this application.

[0022] Figure label:

[0023] 100 Fixed frame, 200 Hinge assembly, 210 Rotating shaft, 220 Hinge plate, 300 Damping assembly, 310 Support plate, 320 First transmission rod, 330 Slider, 340 Damper, 341 Housing, 342 Second transmission rod, 343 First piston, 344 First cavity, 345 Second cavity, 346 First check valve, 3462 First bracket, 3464 First elastic element, 3466 First sealing element, 347 Second check valve, 3472 Second bracket, 3474 Second elastic element, 3476 Second sealing element, 348 Second piston, 349 Third cavity, 350 Guide rod, 360 Through hole, 362 First hole, 364 Second hole, 400 First gear, 500 Second gear, 600 Same speed gear, 700 Transmission gear, 800 Gear assembly. Detailed Implementation

[0024] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0025] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this application, it should be understood that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] The following is combined Figures 1 to 5 This application describes a hinge assembly and an electronic device according to embodiments thereof.

[0029] like Figure 1 and Figure 2As shown, according to some embodiments of this application, this application provides a hinge assembly, including a fixed frame 100, at least two hinge assemblies 200, a gear assembly 800, a first gear 400, a second gear 500, and a damping assembly 300. At least two hinge assemblies 200 are connected to the fixed frame 100; the gear assembly 800 includes multiple gears that mesh sequentially, with two gears at each end of the gear assembly 800 respectively connected to the at least two hinge assemblies 200 so that the at least two hinge assemblies 200 can rotate synchronously relative to the fixed frame 100; the first gear 400 is connected to one of the at least two hinge assemblies 200; the second gear 500 meshes with the first gear 400; the damping assembly 300 is connected to the second gear 500, and when the at least two hinge assemblies 200 rotate synchronously relative to the fixed frame 100 via the gear assembly 800, the damping assembly 300 can apply resistance to the at least two hinge assemblies 200 via the first gear 400 and the second gear 500.

[0030] In this embodiment, the hinge assembly includes a fixed frame 100, at least two hinge assemblies 200, a gear assembly 800, a first gear 400, a second gear 500, and a damping assembly 300. The at least two hinge assemblies 200 are connected to the fixed frame 100 and are rotatable relative to the fixed frame 100 to enable the installation of the at least two hinge assemblies 200, allowing them to open and close during rotation. The gear assembly 800 includes multiple gears that mesh sequentially to enable the installation of multiple gears and the transmission of power between them. Two gears located at both ends of the gear assembly 800 are respectively connected to the at least two hinge assemblies 200 to enable the installation of the two gears at both ends of the gear assembly 800. During the opening and closing process of the at least two hinge assemblies 200, this allows them to rotate synchronously relative to the fixed frame 100, thereby ensuring the consistency of rotation of the at least two hinge assemblies 200. A first gear 400 is connected to one of at least two page-mounted assemblies 200; a second gear 500 meshes with the first gear 400 to mount the first gear 400 and the second gear 500, enabling power transmission between them. A damping assembly 300 is disposed on one of the page-mounted assemblies 200 to mount and secure it. The damping assembly 300 is connected to the second gear 500 to mount it, allowing resistance to be transmitted between them. When at least two hinge assemblies 200 rotate synchronously relative to the fixed frame 100 via the gear assembly 800, that is, during the opening and closing process of at least two hinge assemblies 200, the damping assembly 300 can apply resistance to at least two hinge assemblies 200 via the first gear 400 and the second gear 500, thereby generating a certain damping sensation. Therefore, by setting the damping assembly 300 in the hinge assembly to cooperate with the gear assembly 800, this application enables the damping assembly 300 to protect both hinge assemblies 200 on both sides simultaneously. When the user quickly opens and closes the hinge assembly 200 with the folding screen installed, the damping assembly 300, in cooperation with the first gear 400 and the second gear 500, applies resistance to the hinge assembly 200, which can prevent the folding screen from rotating too fast during violent opening and closing, thereby achieving the effect of protecting the hinge assembly of the folding screen and protecting the folding screen. Moreover, when the folding screen is opened and closed normally, it can provide the user with an appropriate damping sensation, thereby reducing the probability of the hinge assembly 200 being opened and closed quickly and reducing the probability of damage to the hinge assembly.

[0031] Specifically, the foldable screen can be mounted on at least two hinge components 200. When the at least two hinge components 200 rotate relative to the fixing frame 100, the foldable screen can be opened and closed normally. When the foldable screen unfolds and closes, the damping component 300 transmits appropriate damping to the hinge components 200, providing the user with a comfortable damping feel. When the foldable screen is opened or closed violently or at high speed, the damping component 300 transmits appropriate damping to the hinge components 200, slowing down the opening or closing speed of the foldable screen. When the opening and closing speed of the foldable screen exceeds the normally set speed, the damping can be dynamically strengthened or weakened according to the speed. By setting the damping component 300, the excessive speed of the foldable screen during violent opening and closing can be prevented, thus protecting the hinge mechanism and the flexible screen. Furthermore, the foldable screen provides a comfortable damping feel when opening and closing normally, improving the user experience.

[0032] According to some other embodiments of this application, such as Figure 2 and Figure 3 As shown, the damping assembly 300 includes a support plate 310, a first transmission rod 320, a slider 330, and a damper 340. The support plate 310 is connected to the fixed frame 100; the first transmission rod 320 is disposed on the support plate 310 and connected to one of the at least two page assembly assemblies 200, and can rotate with the at least two page assembly assemblies 200 relative to the fixed frame 100; the slider 330 cooperates with the first transmission rod 320 and can slide along the axial direction of the first transmission rod 320; the damper 340 is connected to the slider 330.

[0033] In this embodiment, the damping assembly 300 includes a support plate 310, a first transmission rod 320, a slider 330, and a damper 340. The support plate 310 is connected to the fixing frame 100 to achieve the installation and fixation of the support plate 310. The first transmission rod 320 is disposed on the support plate 310 and connected to one of the at least two page assembly assemblies 200 to achieve the installation of the first transmission rod 320, so that when the at least two page assembly assemblies 200 rotate, they can transmit power to the first transmission rod 320. The first transmission rod 320 can rotate relative to the fixed frame 100 with at least two page assembly 200. The slider 330 cooperates with the first transmission rod 320 and can slide along the axial direction of the first transmission rod 320, so that the first transmission rod 320 can drive the sliding when rotating. Furthermore, the slider 330 is connected to the damper 340. Therefore, during the opening and closing process of at least two page assembly 200, the damping component 300 can apply resistance to at least two page assembly 200 through the first transmission rod 320 and the slider 330, thereby providing a certain damping feel to at least two page assembly 200.

[0034] According to some other embodiments of this application, such as Figure 2 and Figure 3 As shown, the first transmission rod 320 is a lead screw, and the slider 330 is provided with a threaded hole, through which the lead screw passes.

[0035] In this embodiment, the first transmission rod 320 is a lead screw, and the slider 330 is provided with a threaded hole. The lead screw passes through the threaded hole. By using the threaded hole on the lead screw and the slider 330 to cooperate, the slider 330 can move along the axial direction of the lead screw during rotation, so as to realize the transmission of power, thereby facilitating the damper 340 to provide resistance to the hinge assembly 200.

[0036] According to some other embodiments of this application, such as Figure 4 and Figure 5 As shown, the damping assembly 300 also includes a guide rod 350, which is connected to the support plate 310; the slider 330 is provided with a guide hole, and the guide rod 350 passes through the guide hole.

[0037] In this embodiment, the damping assembly 300 further includes a guide rod 350, which is connected to the support plate 310, thereby fixing the guide rod 350 to the support plate 310. The slider 330 is provided with a guide hole, and the guide rod 350 passes through the guide hole. When the first transmission rod 320 drives the slider 330 to move, the slider 330 can move relative to the first transmission rod 320 along the direction of the guide rod 350. By providing the guide rod 350, the movement of the slider 330 can be guided.

[0038] Specifically, there are two guide rods 350, which guide the sliding of the slider 330.

[0039] Specifically, in Figure 4 In the diagram, arrow A indicates the direction of movement of slider 330, and arrow B indicates the direction of flow of fluid media such as air, gas, or liquid.

[0040] According to some other embodiments of this application, such as Figure 4 and Figure 5 As shown, the damper 340 includes a housing 341, a second transmission rod 342, and a first piston 343. The first end of the second transmission rod 342 is connected to the slider 330; the first piston 343 is disposed inside the housing 341, dividing the inner cavity of the housing 341 into a first cavity 344 and a second cavity 345, and the first piston 343 is connected to the second end of the second transmission rod 342; the first piston 343 is provided with a through hole 360, and the first cavity 344 communicates with the second cavity 345 through the through hole 360.

[0041] In this embodiment, the damper 340 includes a housing 341, a second transmission rod 342, and a first piston 343. The first end of the second transmission rod 342 is connected to a slider 330, allowing the slider 330 to transmit power to the second transmission rod 342. The first piston 343 is disposed within the housing 341, dividing the inner cavity of the housing 341 into a first cavity 344 and a second cavity 345. The first piston 343 is connected to the second end of the second transmission rod 342 to install the first piston 343, thereby forming two cavities within the housing 341. This allows the second transmission rod 342 to drive the first piston 343 to move within the housing 341, thus changing the volume of the two cavities. The first piston 343 is provided with a through hole 360, and the first cavity 344 is connected to the second cavity 345 through the through hole 360, so that gas can flow between the first cavity 344 and the second cavity 345. Therefore, during the opening and closing of at least two hinge assemblies 200, the second transmission rod 342 drives the first piston 343 to move within the housing 341, causing air in the first cavity 344 to enter the second cavity 345 through the through hole 360, or air in the second cavity 345 to enter the first cavity 344 through the through hole 360, thereby causing a change in the volume of the first cavity 344 and the second cavity 345. Furthermore, the gas flow process generates a certain resistance to the movement of the first piston 343, thus providing a certain damping sensation when the at least two combined page assemblies 200 open and close. When the at least two combined page assemblies 200 open and close rapidly, the first piston 343 needs to move rapidly, causing the volumes of the first cavity 344 and the second cavity 345 to change rapidly. At this time, the gas flow process generates a large resistance to the movement of the first piston 343, resulting in a large damping sensation during opening and closing, which can reduce the opening and closing speed. Therefore, the damper 340 can protect the at least two opening and closing assemblies during rapid opening and closing.

[0042] According to some other embodiments of this application, such as Figure 4 and Figure 5 As shown, the through hole 360 ​​includes a first hole 362 and a second hole 364, and the damper 340 also includes a first check valve 346 and a second check valve 347. The first check valve 346 is disposed in the first hole 362; the second check valve 347 is disposed in the second hole 364; wherein the conduction directions of the first check valve 346 and the second check valve 347 are opposite.

[0043] In this embodiment, the through-hole 360 ​​includes a first hole 362 and a second hole 364, through which gas flows between the first cavity 344 and the second cavity 345. The damper 340 also includes a first one-way valve 346 and a second one-way valve 347. The first one-way valve 346 is disposed in the first hole 362 for installation. The second one-way valve 347 is disposed in the second hole 364 for installation. Furthermore, because the first one-way valve 346 and the second one-way valve 347 have opposite conduction directions, when gas flows between the first cavity 344 and the second cavity 345, one of the first one-way valves 346 and the second one-way valve 347 is open and the other is closed, allowing gas to flow only through one one-way valve. This further generates a component for the movement of the first piston 343, thereby improving the damping feel when the at least two hinge assemblies 200 open and close.

[0044] According to some other embodiments of this application, such as Figure 4 and Figure 5 As shown, the first one-way valve 346 includes a first bracket 3462, a first elastic element 3464, and a first sealing element 3466. The first bracket 3462 is connected to a first side of the first piston 343; the first end of the first elastic element 3464 is connected to the first bracket 3462; the first sealing element 3466 is connected to the second end of the first elastic element 3464 and is located at the first hole 362, abutting against the first side of the first piston 343. The second one-way valve 347 includes a second bracket 3472, a second elastic element 3474, and a second sealing element 3476. The second bracket 3472 is connected to a second side of the first piston 343; the first end of the second elastic element 3474 is connected to the second bracket 3472; the second sealing element 3476 is connected to the second end of the second elastic element 3474 and is located at the second hole 364, abutting against the second side of the first piston 343.

[0045] In this embodiment, the first one-way valve 346 includes a first bracket 3462, a first elastic element 3464, and a first sealing element 3466. The first bracket 3462 is connected to a first side of the first piston 343 to install the first bracket 3462, allowing the first bracket 3462 to move with the first piston 343. A first end of the first elastic element 3464 is connected to the first bracket 3462 to install and fix the first elastic element 3464. The first sealing element 3466 is connected to a second end of the first elastic element 3464 to install the first sealing element 3466. The first sealing element 3466 is located at the first hole 362, abutting against the first side of the first piston 343, thereby preventing gas from flowing through the first hole 362 into the first cavity 344 and the second cavity 345 when the first one-way valve 346 is in the closed state. When the first one-way valve 346 is in the open state, gas can flow through the first hole 362 into the first cavity 344 and the second cavity 345. Since the first sealing member 3466 is in a compressed state when it abuts against the first side of the first piston 343, the gas needs to overcome the pressure of the first elastic member 3464 to make the first sealing member 3466 move away from the first hole 362, thereby making the first cavity 344 and the second cavity 345 open to allow gas to pass through. During this process, a large resistance will be generated on the first piston 343, thereby increasing the damping feel when at least two hinge assemblies 200 open and close.

[0046] In this embodiment, such as Figure 4 and Figure 5As shown, the second one-way valve 347 includes a second bracket 3472, a second elastic element 3474, and a second sealing element 3476. The second bracket 3472 is connected to the second side of the first piston 343 to install the second bracket 3472, allowing the second bracket 3472 to move with the first piston 343. The first end of the second elastic element 3474 is connected to the second bracket 3472 to install and fix the second elastic element 3474. The second sealing element 3476 is connected to the second end of the second elastic element 3474 to install the second sealing element 3476. The second sealing element 3476 is located at the second hole 364, abutting against the second side of the first piston 343, thereby preventing gas from flowing through the second hole 364 into the first cavity 344 and the second cavity 345 when the second one-way valve 347 is in the closed state. When the second one-way valve 347 is in the open state, gas can flow through the second hole 364 in the first cavity 344 and the second cavity 345. Since the second sealing member 3476 is against the second side of the first piston 343, the second elastic member 3474 is in a compressed state. Therefore, the gas needs to overcome the pressure of the second elastic member 3474 to make the second sealing member 3476 move away from the second hole 364, thereby making the first cavity 344 and the second cavity 345 open to allow gas to pass through. In this process, a large resistance will be generated on the first piston 343, thereby improving the damping feel when at least two hinge assemblies 200 open and close.

[0047] According to some other embodiments of this application, such as Figure 4 and Figure 5 As shown, the damper 340 also includes a second piston 348, which is disposed on the second side of the first piston 343. A second cavity 345 is disposed between the second piston 348 and the first piston 343, and a third cavity 349 is disposed on the side of the second piston 348 away from the first piston 343.

[0048] In this embodiment, the damper 340 further includes a second piston 348, which is disposed on the second side of the first piston 343. A second cavity 345 is disposed between the second piston 348 and the first piston 343, and a third cavity 349 is disposed on the side of the second piston 348 away from the first piston 343. When the second cavity 345 is compressed, the second piston 348 can compress the third cavity 349 to move along the axis under the push of the gas in the second cavity 345, or when the second piston 348 moves in the opposite direction, the third cavity 349 returns to its normal volume, balancing the pressure on both sides of the second cavity 345 and the third cavity 349. By setting the second piston 348 and the third cavity 349, a buffering effect can be achieved when the second cavity 345 is compressed.

[0049] Specifically, arrow C indicates the direction of movement of the second piston 348.

[0050] According to some other embodiments of this application, the third cavity 349 is filled with a gaseous medium.

[0051] In this embodiment, the third cavity 349 is filled with a gas medium. Since the gas medium has good compressibility, filling it with a gas medium facilitates the second piston 348 to compress the third cavity 349, thereby improving the buffering effect.

[0052] According to some other embodiments of this application, the first cavity 344 and the second cavity 345 are filled with a liquid medium.

[0053] In this embodiment, the first cavity 344 and the second cavity 345 are filled with a liquid medium. By placing the liquid medium between the first cavity 344 and the second cavity 345, when the volumes of the first cavity 344 and the second cavity 345 change, the liquid can flow directly between the first cavity 344 and the second cavity 345, thereby generating a certain resistance to the movement of the first piston 343, and thus improving the damping effect of the damper 340.

[0054] Specifically, when the user folds the hinge assembly 200 with the folding screen installed, the second piston 348 in the damper 340 first compresses the third chamber 349. Since the gas medium has good compressibility, after the third chamber 349 is filled with the gas medium, the damping is small at the beginning of compression. As the gas in the third chamber 349 is compressed, its pressure increases. When it reaches a certain critical value, the third chamber 349 can no longer be compressed. At this time, the first one-way valve 346 and the second one-way valve 347 in the first chamber 344 and the second chamber 345 are used to realize the compression flow of the liquid medium in the first chamber 344 and the second chamber 345. At this moment, the damping provided by opening and closing will be further increased, but the hinge will not be jammed, thereby reducing the probability of the hinge assembly 200 being opened and closed quickly.

[0055] Specifically, the liquid medium is hydraulic oil.

[0056] According to some other embodiments of this application, such as Figure 1 As shown, each of the at least two hinge assemblies 200 includes a pivot 210 and a hinge plate 220. The pivot 210 is rotatably connected to the frame 100; the hinge plate 220 is connected to the pivot 210.

[0057] In this embodiment, each of the at least two page assemblies 200 includes a pivot 210 and a hinge plate 220. The pivot 210 is rotatably connected to the mounting frame 100 to enable mounting of the pivot 210, and the hinge plate 220 is connected to the pivot 210, thereby allowing each of the at least two page assemblies 200 to rotate relative to the mounting frame 100 to enable the unfolding and closing of the at least two page assemblies 200.

[0058] According to some other embodiments of this application, such as Figure 2 and Figure 3 As shown, the hinge assembly also includes a first gear 400 and a second gear 500. The first gear 400 is connected to the rotating shaft 210; the second gear 500 is connected to the first transmission rod 320 and meshes with the first gear 400.

[0059] In this embodiment, the hinge assembly further includes a first gear 400 and a second gear 500. The first gear 400 is connected to the rotating shaft 210 to enable its installation. The second gear 500 is connected to the first transmission rod 320 and meshes with the first gear 400. Thus, when the rotating shaft 210 rotates relative to the fixed frame 100, the first gear 400 can drive the second gear 500 to rotate, thereby transmitting power to the first transmission rod 320 through the second gear 500. This allows the damper 340 to apply resistance to at least two hinge assemblies 200. By setting the first gear 400 and the second gear 500 to mesh for transmission, the wear of the rotating shaft 210 due to coaxiality errors between the rotating shaft 210 and the first transmission rod 320 can be prevented from being too rapid, thereby extending the lifespan of the rotating shaft 210.

[0060] According to some other embodiments of this application, the number of teeth of the first gear 400 is greater than the number of teeth of the second gear 500.

[0061] In this embodiment, the number of teeth of the first gear 400 is greater than the number of teeth of the second gear 500, so that there is a large transmission ratio between the first gear 400 and the second gear 500. When the first gear 400 rotates, the second gear 500 can rotate quickly, thereby driving the first transmission rod 320 to rotate quickly, so that the resistance can further enhance the damping feel when at least two hinge assemblies 200 open and close.

[0062] Specifically, the gear assembly 800 includes multiple gears, including a same-speed gear 600 and a transmission gear 700. The two gears located at both ends of the gear assembly 800 are the same-speed gears 600. The first gear 400 is the driving gear, and the second gear 500 is the driven gear. The first transmission rod 320 is a lead screw, the support plate 310 is a fixed sleeve plate, and there are two fixed sleeve plates. The slider 330 is a driven frame, the guide rod 350 is a fixed guide post, the second transmission rod 342 is a moving rod, the first piston 343 is a plunger, and the second piston 348 is an isolation piston. At least two hinge assemblies 200 are fixed to the fixed frame 100 by three screws. The hinge plate 220 is fixed to the hinge opening and closing fixed plate, and the entire folding screen is fixed by the hinge opening and closing fixed plate. The hinge plate 220 is fixed to the rotating shaft 210 inside the hinge mechanism, which can drive the entire rotating shaft 210 to rotate. A gear 600 with the same speed is fixed on the rotating shaft 210, and the gear 600 meshes with it through an intermediate transmission gear 700. When the hinge opening and closing plates unfold and close, they drive their respective rotating shafts 210 to rotate. The gear 600 and the transmission gear 700 on the rotating shaft 210 ensure the consistency of rotation of the two hinge opening and closing plates. A driving gear is fixed to the head of the rotating shaft 210, which can rotate synchronously under the drive of the rotating shaft 210. The driven gear and the lead screw are fixed to the same rotating shaft 210 and can rotate freely around two fixed sleeve plates simultaneously. The two fixed sleeve plates are fixed to the hinge fixing frame 100. The driven gear and the driving gear mesh, and with a large transmission ratio, the driven shaft can rotate rapidly under the rotation of the driving gear, thereby driving the lead screw to rotate rapidly. When the lead screw rotates, the driven frame mating with it can move linearly along the fixed guide post when the lead screw rotates forward or reverse. The fixed guide post is fixed to the fixed sleeve plate to provide guidance for the driven frame. The plunger is fixed to the moving rod, and the moving rod is fixed to the driven frame. The plunger can move along the axis inside the damper 340 under the drive of the driven frame. The outer circumference of the plunger is made of silicone material and fits into the inner wall of the damper 340 to achieve a sealing effect. The plunger has two through holes 360 to allow the hydraulic oil stored in the first chamber 344 and the second chamber 345 to be connected. A first one-way valve 346 and a second one-way valve 347 are fixed to the through hole 360. The first sealing element 3466 on the first one-way valve 346 is fixed by the first elastic element 3464, and the second sealing element 3476 on the second one-way valve 347 is fixed by the second elastic element 3474. Both the first elastic element 3464 and the second elastic element 3474 are springs. The light springs are in a slightly compressed state. The first one-way valve 346 and the second one-way valve 347 can only allow the oil in the first cavity 344 and the second cavity 345 to pass unidirectionally from the arc side of the first one-way valve 346 and the second one-way valve 347 to the flat bottom side. However, the oil needs to overcome the elastic force of the spring to pass through. The elastic force of the first elastic element 3464 and the second elastic element 3474 can be set by selecting different types of springs.The outer circumference of the isolation piston is made of silicone, which allows the isolation piston to achieve a sealing effect when installed on the inner wall of the housing 341. Under the push of the oil stored in the second chamber 345, the isolation piston can compress the gas storage chamber to move along the axis, or move in the opposite direction to restore the gas storage chamber to its normal volume, thus balancing the pressure on both sides of the second chamber 345 and the gas storage chamber. The outer shell of the damper 340 is fixed on the hinge bracket 100.

[0063] Specifically, the working principle of the hinge assembly of this application is as follows: When the folding screen unfolds or closes within the normal speed range, the two hinge opening and closing fixing plates drive their respective hinge plates 220 to rotate, thereby driving the upper rotating shaft 210 and the rotating shaft 210 to rotate synchronously. The driving gear on the rotating shaft 210 drives the driven gear to rotate, and the lead screw rotates synchronously. The driven frame is driven by the lead screw to move linearly. If the moving rod is stretched out of the damper 340, the plunger will squeeze towards the first cavity 344. The hydraulic oil in the first cavity 344 squeezes the second one-way valve 347, overcoming the elastic force of the second elastic element 3474 to open the second one-way valve 347. The hydraulic oil enters the first cavity 344. The isolation piston moves axially within the damper 340 to balance the pressure on both sides of the second cavity 345 and the third cavity 349. At this time, the flow of hydraulic oil in the first cavity 344 and the second cavity 345 generates resistance to the plunger, which is fed back as a comfortable damping feeling when the folding screen is normally opening and closing. When the folding screen is violently opened and closed, the lead screw rotates rapidly, causing the plunger to move quickly, resulting in a rapid change in the volume of both sides of the first cavity 344 and the second cavity 345. Meanwhile, the hydraulic oil needs to overcome the greater elasticity of the lightweight spring to achieve a faster flow rate. This generates significant resistance for the plunger, which is transmitted to the folding screen, increasing damping and reducing the opening and closing speed. This is the process of closed-loop dynamic damping adjustment, which can prevent excessively high rotation speeds when the folding screen is violently opened and closed, thus protecting the hinge mechanism and the flexible screen.

[0064] According to some embodiments of this application, this application provides an electronic device including the hinge assembly in the above embodiments. Therefore, the electronic device has all the beneficial effects of the hinge assembly, which will not be repeated here.

[0065] Specifically, electronic devices can be mobile terminals such as foldable screen phones and flip phones, or electronic devices such as tablets, laptops, televisions, in-vehicle terminals, and smart wearables.

[0066] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0067] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A hinge assembly, characterized in that, include: Fixture; At least two page assembly components, the at least two page assembly components being connected to the fixing frame; A gear assembly, comprising a plurality of gears that mesh sequentially, wherein two gears located at both ends of the gear assembly are respectively connected to at least two page assembly components, so that the at least two page assembly components can rotate synchronously relative to the fixed frame; A first gear, the first gear being connected to one of the at least two combined page components; The second gear meshes with the first gear; A damping assembly, wherein the damping assembly is connected to the second gear; When the at least two page assembly components rotate synchronously relative to the fixed frame via the gear assembly, the damping assembly can apply resistance to the at least two page assembly components via the first gear and the second gear; The damping component includes: A support plate, which is connected to the fixing frame; A first transmission rod is disposed on the support plate and connected to one of the at least two page assembly components, and is capable of rotating with the at least two page assembly components relative to the fixed frame; A slider, which cooperates with the first transmission rod and is capable of sliding along the axial direction of the first transmission rod; A damper, wherein the damper is connected to the slider; The damper includes: case; The second transmission rod, the first end of which is connected to the slider; A first piston is disposed inside the housing, dividing the inner cavity of the housing into a first cavity and a second cavity, and the first piston is connected to the second end of the second transmission rod; The first piston is provided with a through hole, and the first cavity communicates with the second cavity through the through hole; The through hole includes a first hole and a second hole, and the damper further includes: A first check valve is disposed in the first orifice; A second check valve is disposed in the second orifice; The first check valve and the second check valve have opposite conduction directions.

2. The hinge assembly according to claim 1, characterized in that, The first transmission rod is a lead screw, and the slider is provided with a threaded hole, with the lead screw passing through the threaded hole.

3. The hinge assembly according to claim 1, characterized in that, The damping component also includes: Guide rod, the guide rod being connected to the support plate; The slider is provided with a guide hole, and the guide rod passes through the guide hole.

4. The hinge assembly according to claim 1, characterized in that, The first check valve includes a first bracket, a first elastic element, and a first sealing element; The first bracket is connected to the first side of the first piston; The first end of the first elastic member is connected to the first bracket; The first sealing member is connected to the second end of the first elastic member and is located at the first hole, abutting against the first side of the first piston; The second check valve includes a second bracket, a second elastic element, and a second sealing element; The second bracket is connected to the second side of the first piston; The first end of the second elastic element is connected to the second bracket; The second sealing member is connected to the second end of the second elastic member and is located at the second hole, abutting against the second side of the first piston.

5. The hinge assembly according to claim 1, characterized in that, The damper also includes: The second piston is disposed on the second side of the first piston, and a second cavity is disposed between the second piston and the first piston. A third cavity is disposed on the side of the second piston away from the first piston.

6. The hinge assembly according to claim 5, characterized in that, The third cavity is filled with a gaseous medium.

7. The hinge assembly according to claim 1, characterized in that, The first cavity and the second cavity are filled with a liquid medium.

8. The hinge assembly according to any one of claims 1 to 7, characterized in that, The number of teeth on the first gear is greater than the number of teeth on the second gear.

9. An electronic device, characterized in that, Includes the hinge assembly as described in any one of claims 1 to 8.

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