Folding screen holding assembly and display device

Abstract

The invention discloses a folding screen holding assembly and a display device, and relates to the technical field of folding display screens, and the folding screen holding assembly comprises a base, a movable frame and a pumping mechanism; the base is used for connecting the flexible display screen; the movable frame is rotatably connected to the base; an air pressure chamber is arranged between the movable frame and the base; in the forward rotation process of the movable frame relative to the base, the volume of the air pressure chamber is gradually increased; the pumping mechanism is arranged on the movable frame; the air inlet end of the pumping mechanism is communicated with the outside, and the exhaust end of the pumping mechanism is communicated with the air pressure chamber; the pumping mechanism is used for converting rotation of the movable frame into gas pumping action so as to pump external gas to the air pressure cavity, and therefore the movable frame is prevented from reversely rotating relative to the base through the air pressure effect of the air pressure cavity. According to the scheme, the movable frame rotates relative to the base to drive the pumping mechanism to supply air to the air pressure cavity, so that the movable frame is prevented from rotating reversely through the air pressure effect, and therefore the rotating angle of the flexible display screen can be locked instantly.

Description

Technical Field

[0001] This application relates to the field of foldable display technology, and in particular to a foldable screen holding component and display device. Background Technology

[0002] As electronic display devices become thinner, lighter, and more flexible, foldable flexible displays are increasingly being used in various terminal devices. Currently, most mainstream flexible foldable display devices on the market use traditional hinge mechanisms to achieve the folding and unfolding functions of the flexible display, which can meet the basic functional requirements of folding and unfolding display devices.

[0003] However, traditional hinge mechanisms generally use mechanical locking, which can only provide mechanical locking at a few preset discrete angle positions. Once the flexible display is folded to a non-preset angle, the hinge mechanism cannot generate a continuous holding torque at that angle position. The flexible display will slide to the nearest mechanical locking position under the action of external forces such as gravity. This makes it impossible for users to stably suspend the flexible display at any desired folding angle, resulting in poor flexibility and difficulty in meeting the application needs of multi-angle and multi-form display scenarios. Summary of the Invention

[0004] The main purpose of this application is to propose a folding screen holding component, which aims to solve the technical problem that the current flexible display screen folding and locking operation relies on the hinge mechanism, and can only be locked at a few preset discrete angle positions after folding, and cannot be stably suspended at any desired folding angle, resulting in poor flexibility of use and difficulty in meeting different display needs.

[0005] To achieve the above objectives, the foldable screen holding component proposed in this application includes: Base, used to connect the flexible display screen; A movable frame is rotatably connected to the base; a pneumatic chamber is provided between the movable frame and the base; as the movable frame rotates relative to the base in a first direction, the volume of the pneumatic chamber gradually increases. A pumping mechanism is mounted on the movable frame; the inlet of the pumping mechanism is connected to the outside, and the outlet of the pumping mechanism is connected to the pressure chamber; the pumping mechanism is used to convert the rotation of the movable frame along the first direction into a gas pumping action, so as to pump the outside gas to the pressure chamber, thereby preventing the movable frame from rotating relative to the base along the second direction through the air pressure in the pressure chamber; the second direction is opposite to the first direction.

[0006] In one embodiment, the pumping mechanism includes a driving gear assembly and a driven gear assembly; the driving gear assembly rotates synchronously with the movable frame, the driven gear assembly is rotatably connected to the base, the driven gear assembly meshes with the driving gear assembly in the pump chamber, the air inlet of the pump chamber is connected to the outside, and the air outlet of the pump chamber is connected to the air pressure chamber.

[0007] In one embodiment, the pump chamber includes a first cavity and a second cavity disposed within the base; the driving gear assembly includes a first gear ring, and the driven gear assembly includes a first gear and a second gear, wherein the first gear meshes with the first gear ring in the first cavity, and the first gear meshes with the second gear in the second cavity, wherein the first gear rotates in the same direction as the first gear ring, and the second gear rotates in the opposite direction to the first gear ring; The air inlet of the first cavity is connected to the outside, the air outlet of the first cavity is connected to the air inlet of the second cavity, and the air outlet of the second cavity is connected to the air pressure chamber.

[0008] In one embodiment, the pump chamber further includes a third cavity and a fourth cavity disposed within the base; the driven gear assembly further includes a third gear, the third gear meshing with the first gear ring in the third cavity, the third gear meshing with the second gear in the fourth cavity, and the third gear rotating in the same direction as the first gear ring; The air inlet of the third cavity is connected to the outside, the air outlet of the third cavity is connected to the air inlet of the fourth cavity, and the air outlet of the fourth cavity is connected to the air inlet of the second cavity.

[0009] In one embodiment, the folding screen holding assembly further includes a drive shaft connected to the movable frame, the drive shaft engaging with the first gear ring; the movable frame drives the first gear ring to rotate synchronously via the drive shaft.

[0010] In one embodiment, the drive shaft is configured as a first magnet, and the base is provided with a second magnet; The second magnet is used to magnetically engage with the first magnet to prevent the movable frame from rotating relative to the base.

[0011] In one embodiment, the base is provided with a limiting portion; when the movable frame rotates relative to the base along the first direction to a critical position, the limiting portion is used to abut against the drive shaft to prevent the movable frame from continuing to rotate along the first direction.

[0012] In one embodiment, the foldable screen holding assembly further includes a pressure relief valve disposed on the base, one end of the pressure relief valve communicating with the air pressure chamber, and the other end of the pressure relief valve communicating with the outside.

[0013] This application also proposes a display device, which includes a flexible display screen and at least two folding screen holding components as described above; At least two of the folding screen holding components are arranged sequentially from front to back, and the movable frame of each folding screen holding component is connected to the base of the other folding screen holding component adjacent to it on the rear side; the flexible display screen is laid on the at least two folding screen holding components, and the flexible display screen is connected to the base of the at least two folding screen holding components.

[0014] In one embodiment, the flexible display screen includes a first display screen body and a second display screen body, the first display screen body being stacked on the second display screen body; at least two folding screen holding components are embedded between the first display screen body and the second display screen body, the first display screen body being connected to the base of the at least two folding screen holding components, and the second display screen body being connected to the base of the at least two folding screen holding components.

[0015] The folding screen holding assembly proposed in this application utilizes the kinetic energy of the movable frame rotating relative to the base in a first direction to drive the pumping mechanism. This pumping mechanism, through mechanical transmission, pumps external gas into the pressure chamber, maintaining the gas pressure within the pressure chamber in a dynamic equilibrium state. Thus, the pressure difference between the pressure chamber and the outside environment can be used to prevent the movable frame from rotating in the opposite direction in a second direction. The locking process does not require additional power sources such as motors or servo devices; it achieves instant locking of the movable frame at any angle solely through mechanical energy conversion. This not only simplifies the component structure and reduces manufacturing costs but also avoids operational malfunctions and increased energy consumption caused by additional power sources. When the folding screen holding component is placed in the folding area of ​​the flexible display, the above characteristics can be directly converted into the stepless adjustment function of the folding angle of the flexible display. During the process of the user driving the flexible display to rotate and fold around the folding area, the movable frame will rotate relative to the base in the first direction and synchronously drive the pumping mechanism to maintain the dynamic air pressure balance in the air pressure chamber. Thus, when the flexible display rotates to any angle, the air pressure in the air pressure chamber can prevent the flexible display from rotating in the opposite direction, thereby realizing the instantaneous and stable suspension of the flexible display at that angle position.

[0016] This solution breaks through the discrete angle limitations of the mechanical locking method relied upon by traditional hinge mechanisms, enabling flexible displays to adapt to display scenarios with multiple angles and forms, such as arbitrary tilt angle adjustment in video conferencing and maintaining a half-folded state in reading mode. While improving the flexibility and adaptability of flexible displays, it also enhances the reliability and long-term stability of the folding screen holding component through a pure mechanical locking mechanism without an additional power source. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the overall structure of an embodiment of the foldable screen holding component provided in this application; Figure 2 A schematic diagram of the overall structure of an embodiment of the display device provided in this application; Figure 3 A schematic diagram of the structure of a flexible display screen in a fully unfolded state in one embodiment of the display device provided in this application; Figure 4 A schematic diagram of the structure of a flexible display screen in a folded state in one embodiment of the display device provided in this application; Figure 5 A schematic diagram of the structure of the flexible display screen in a fully unfolded state in another embodiment of the display device provided in this application; Figure 6 A schematic diagram of the structure of the flexible display screen in a folded state in another embodiment of the display device provided in this application.

[0019] Explanation of icon numbers: 10000, Maintain component layer; 1000, Foldable screen retaining components; 2000, Flexible display screen; 2100, OLED display layer; 2200, Flexible transition layer; 2300, First display screen body; 2400, Second display screen body; 1. Base; 11. Limiting part; 2. Movable frame; 3. Pneumatic chamber; 4. Pumping mechanism; 4a. Inlet end; 4b. Exhaust end; 41. Driving gear assembly; 42. Driven gear assembly; 411. First gear ring; 421. First gear; 422. Second gear; 423. Third gear; 4111. Retaining wall structure; 5. Pump chamber; 51. First chamber; 52. Second chamber; 53. Third chamber; 54. Fourth chamber; 511. First sub-chamber; 512. Second sub-chamber; 521. Third sub-chamber; 522. Fourth sub-chamber; 531. Fifth sub-chamber; 532. Sixth sub-chamber; 541. Seventh sub-chamber; 542. Eighth sub-chamber; 6. Drive shaft; 61. First magnet; 7. Second magnet; 8. Pressure relief valve.

[0020] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0022] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0023] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0024] As electronic display devices become thinner, lighter, and more flexible, foldable flexible displays are increasingly being used in various terminal devices. Currently, most mainstream flexible foldable display devices on the market use traditional hinge mechanisms to achieve the folding and unfolding functions of the flexible display, which can meet the basic functional requirements of folding and unfolding display devices.

[0025] However, traditional hinge mechanisms generally use mechanical locking, which can only provide mechanical locking at a few preset discrete angle positions. Once the flexible display is folded to a non-preset angle, the hinge mechanism cannot generate a continuous holding torque at that angle position. The flexible display will slide to the nearest mechanical locking position under the action of external forces such as gravity. This makes it impossible for users to stably suspend the flexible display at any desired folding angle, resulting in poor flexibility and difficulty in meeting the application needs of multi-angle and multi-form display scenarios.

[0026] To address the aforementioned issues, this application proposes a folding screen holding component. Its movable frame can rotate relative to the base to any angle, and at that angle, it is instantly locked by pneumatic pressure. Based on these characteristics, this folding screen holding component can replace the traditional hinge mechanism in the folding area of ​​a flexible display screen. When the flexible display screen rotates around this folding area to any angle, the folding screen holding component can be used to stably suspend the flexible display screen at the current folding position, thus achieving stepless adjustment of the folding angle of the flexible display screen. This improves the flexibility of the flexible display screen and better meets the application needs of multi-angle and multi-form display scenarios.

[0027] Please see Figure 1 and for reference Figures 2 to 4 One embodiment of this application provides a foldable screen holding assembly 1000, comprising: Base 1, used to connect the flexible display screen 2000; The movable frame 2 is rotatably connected to the base 1; a pneumatic chamber 3 is provided between the movable frame 2 and the base 1; as the movable frame 2 rotates relative to the base 1 in the first direction, the volume of the pneumatic chamber 3 gradually increases. A pumping mechanism 4 is mounted on the movable frame 2. The inlet end 4a of the pumping mechanism 4 is connected to the outside, and the exhaust end 4b of the pumping mechanism 4 is connected to the pressure chamber 3. The pumping mechanism 4 is used to convert the rotation of the movable frame 2 in the first direction into a gas pumping action, so as to pump the outside gas to the pressure chamber 3, thereby preventing the movable frame 2 from rotating relative to the base 1 in the second direction through the air pressure of the pressure chamber 3. The second direction is opposite to the first direction.

[0028] In this embodiment, the flexible display screen 2000 may include multiple stacked functional film layers with flexible folding function, such as display layer, component layer and structural layer for separation; the outermost layer is the display layer, which is used to display images and screens.

[0029] The base 1 can be designed in the shape of a cylinder, ring, plate, or strip, etc., according to the contour of the folding area of ​​the flexible display screen 2000; the base 1 is set as follows: Figure 1 Taking the cylindrical structure shown as an example, its outer cylindrical surface is provided with an installation structure (such as a slot, adhesive surface, etc.) for connecting the flexible display screen 2000, so as to achieve a fixed connection with the flexible display screen 2000.

[0030] The structure of the movable frame 2 is adapted to the base 1; the movable frame 2 can be directly rotatably fitted onto the base 1, or the movable frame 2 can be rotatably assembled onto the base 1 through a rotatable connection structure (such as a pivot, rotating shaft, hinge shaft, etc.), so that the movable frame 2 can rotate relative to the base 1 around a preset axis. The base 1 is configured as follows... Figure 1 Taking the cylindrical structure shown as an example, the movable frame 2 can be set as a columnar structure and rotate around the central axis of the base 1 and fit into the inner cavity of the base 1.

[0031] The mating surfaces between the movable frame 2 and the base 1 can be sealed using a sealing design (such as a sealing groove or sealing ring) to form a closed air pressure chamber 3. The volume of this air pressure chamber 3 changes as the movable frame 2 rotates relative to the base 1. For example, the base 1 is configured as follows... Figure 1 Taking the cylindrical structure shown as an example, the movable frame 2 is configured as a columnar structure and rotates around the central axis of the base 1, fitting within the inner cavity of the base 1. The base 1 has an airtight groove extending circumferentially, and the movable frame 2 has an airtight stop block that slides within the airtight groove. The airtight space between the airtight stop block and the target end of the airtight groove constitutes a pneumatic chamber 3. When the movable frame 2 rotates relative to the base 1 along a first direction, the distance between the airtight stop block and the target end of the airtight groove gradually increases, thereby gradually increasing the volume of the pneumatic chamber 3. The first direction can be set to a clockwise or counterclockwise direction.

[0032] The pumping mechanism 4 can convert the rotation of the movable frame 2 relative to the base 1 into a gas pumping action through mechanical transmission, such as by using a gear pump or a piston pump. Taking a gear pump as an example, when the movable frame 2 rotates, it drives the active component (such as the active gear) of the pumping mechanism 4 to rotate synchronously. The active component drives the driven component (such as the driven gear) to move through meshing or linkage structure, thereby forming a gas pressure difference in the pump chamber 5. The existence of this gas pressure difference can drive the gas to flow from one end of the pump chamber 5 to the other end. Based on the above principle, with the inlet end 4a of the pumping mechanism 4 connected to the outside and the outlet end 4b connected to the pressure chamber 3, when the movable frame 2 rotates relative to the base 1 in the first direction, the pumping mechanism 4 can continuously pump external gas to the pressure chamber 3 based on the aforementioned pressure difference. This gas pumping action is synchronized with the volume increase of the pressure chamber 3, and the amount of gas in the pressure chamber 3 will increase at a corresponding rate as the volume of the pressure chamber 3 increases. In this way, the gas pressure in the pressure chamber 3 can be maintained in a relatively constant dynamic equilibrium. Under the action of air pressure in the air pressure chamber 3, since the second direction is opposite to the first direction (taking the first direction as counterclockwise as an example, the second direction should be clockwise), when the movable frame 2 tends to rotate in the second direction under the action of external force, the gas pressure in the air pressure chamber 3 will generate reverse resistance on the movable frame 2. This can prevent the movable frame 2 from rotating relative to the base 1 in the second direction, thereby locking the movable frame 2 and keeping the movable frame 2 in the current angular position, while not affecting the movable frame 2 from continuing to rotate relative to the base 1 in the first direction.

[0033] Based on the aforementioned characteristics of the folding screen holding component 1000, in practical applications, the folding screen holding component 1000 can be placed in the folding area of ​​the flexible display screen 2000. This folding area divides the flexible display screen 2000 into two parts. The base 1 can be connected to one part of the flexible display screen 2000, and the movable frame 2 can be connected to the other part of the flexible display screen 2000. When the user rotates the flexible display screen 2000 around the folding area to complete the folding or unfolding operation, the movable frame 2 will rotate along the first direction with the flexible display screen 2000. During the rotation, the volume of the air pressure chamber 3 gradually increases, and the pumping mechanism 4 continuously pumps external gas into the air pressure chamber 3, making the air pressure chamber 3... The gas pressure is maintained in a dynamic equilibrium state. When the user stops rotating, the air pressure in the air pressure chamber 3 will form a holding torque to prevent the movable frame 2 from rotating in the opposite direction under the action of external forces such as gravity (that is, to prevent the movable frame 2 from rotating on its own in the second direction), so that the flexible display screen 2000 can be stably suspended at the current angle position. Subsequently, when the user continues to drive the flexible display screen 2000 to rotate in the original direction, the movable frame 2 will also continue to rotate in the first direction along with the flexible display screen 2000. When the movable frame 2 rotates to a new angle relative to the base 1, the user stops driving the flexible display screen 2000. At this time, the flexible display screen 2000 will also be stably suspended at the current angle position under the action of the air pressure in the air pressure chamber 3.

[0034] Therefore, based on the folding screen holding assembly 1000 provided in this embodiment, the kinetic energy of the movable frame 2 rotating relative to the base 1 in the first direction is used to drive the pumping mechanism 4, so as to pump the external gas to the air pressure chamber 3 by means of the mechanical transmission of the pumping mechanism 4, so that the gas pressure in the air pressure chamber 3 is maintained in a dynamic equilibrium state. In this way, the air pressure difference between the air pressure chamber 3 and the outside can be used to prevent the movable frame 2 from rotating in the opposite direction in the second direction. The above locking process does not require additional power sources such as motors and servo devices. The movable frame 2 can be locked instantly at any angle by mechanical energy conversion. This not only simplifies the component structure and reduces manufacturing costs, but also avoids problems such as operation failure and increased energy consumption caused by additional power sources. When the folding screen holding component 1000 is set in the folding area of ​​the flexible display screen 2000, the above characteristics can be directly converted into the stepless adjustment function of the folding angle of the flexible display screen 2000. During the process of the user driving the flexible display screen 2000 to rotate and fold around the folding area, the movable frame 2 will be driven to rotate relative to the base 1 in the first direction and the pumping mechanism 4 will be driven synchronously to maintain the dynamic air pressure balance of the air pressure chamber 3. Thus, when the flexible display screen 2000 rotates to any angle, the air pressure in the air pressure chamber 3 can prevent the flexible display screen 2000 from rotating in the opposite direction, thereby realizing the instantaneous and stable suspension of the flexible display screen 2000 at that angle position.

[0035] The technical solution of this embodiment breaks through the discrete angle limitation of the mechanical locking method relied upon by traditional hinge mechanisms, enabling the flexible display screen 2000 to adapt to the display scenario requirements of multiple angles and multiple forms, such as arbitrary tilt angle adjustment in video conferencing, and maintaining a half-folded state in reading mode. While improving the flexibility and scenario adaptability of the flexible display screen 2000, it also enhances the reliability and long-term stability of the folding screen holding component 1000 through a pure mechanical locking mechanism without an additional power source.

[0036] In one embodiment, refer to Figure 1 The pumping mechanism 4 includes a drive gear assembly 41 and a driven gear assembly 42. The drive gear assembly 41 rotates synchronously with the movable frame 2, and the driven gear assembly 42 is rotatably connected to the base 1. The driven gear assembly 42 meshes with the drive gear assembly 41 in the pump chamber 5. The air inlet of the pump chamber 5 is connected to the outside, and the exhaust port of the pump chamber 5 is connected to the air pressure chamber 3.

[0037] In this embodiment, the driving gear assembly 41 can be composed of several meshing transmission components such as gears, gear rings, and racks, and the driven gear assembly 42 can also be composed of several meshing transmission components such as gears, gear rings, and racks. At least one meshing transmission component in the driving gear assembly 41 is connected to the movable frame 2 and rotates synchronously with the movable frame 2; the driven gear assembly 42 can be rotatably mounted on the base 1 through a fixed shaft on the base 1, and at least one meshing transmission component in the driven gear assembly 42 meshes with at least one meshing transmission component in the driving gear assembly 41 within the pump chamber 5; wherein, the pump chamber 5 is an airtight space provided within the base 1 or an airtight space formed by the base 1 and the movable frame 2, the air inlet of the pump chamber 5 is connected to the outside through corresponding channels and pipes, and the air outlet of the pump chamber 5 is connected to the air pressure chamber 3 through corresponding channels and pipes.

[0038] The pair of meshing transmission components, namely the driving gear assembly 41 and the driven gear assembly 42, which mesh with each other in the pump chamber 5, are referred to as the target meshing transmission components, and the meshing area of ​​the target meshing transmission components is referred to as the target meshing area. When the movable frame 2 drives the driving gear assembly 41 to rotate, on one side of the target meshing area, a pair of teeth on the target meshing transmission component gradually approach each other from a state of separation and mesh with each other. This can squeeze the external gas entering the pump chamber 5 through the air inlet into the meshing area, and the gas squeezed into the meshing area will be stored in the tooth groove. At the same time, on the other side of the target meshing area, a pair of teeth on the target meshing transmission component gradually separate from a state of mutual meshing. This can squeeze the gas in the meshing area outward, that is, release the gas stored in the tooth groove to the exhaust port, and then push the squeezed gas from the exhaust port into the air pressure chamber 3.

[0039] As can be seen, during the continuous rotation of the driven gear assembly 42 driven by the active gear assembly 41, based on the meshing and disengagement action between the gear teeth, the external gas entering the pump chamber 5 through the air inlet can be continuously pushed into the meshing area, and then continuously pushed from the meshing area to the exhaust port on the other side of the pump chamber 5. Thus, the continuous pumping of gas from the outside to the air pressure chamber 3 can be achieved through the above-mentioned meshing transmission method.

[0040] This embodiment utilizes the precision of gear meshing transmission to achieve stable gas pumping at a preset rate. The gas pumping rate can maintain a high degree of synchronization with the rotation of the movable frame 2, thereby ensuring dynamic matching between the gas pumping volume and the volume increase of the pressure chamber 3. This can stably maintain the air pressure balance within the pressure chamber 3 and provide continuous and reliable air pressure resistance for locking the movable frame 2 at any angle. At the same time, based on the compactness of the gear meshing transmission structure, it can better adapt to the thin and light design requirements of the flexible display screen 2000.

[0041] In one embodiment, refer to Figure 1 The pump chamber 5 includes a first chamber 51 and a second chamber 52 disposed within the base 1; the driving gear assembly 41 includes a first gear ring 411, and the driven gear assembly 42 includes a first gear 421 and a second gear 422. The first gear 421 meshes with the first gear ring 411 in the first chamber 51, and the first gear 421 meshes with the second gear 422 in the second chamber 52. The first gear 421 and the first gear ring 411 rotate in the same direction, and the second gear 422 and the first gear ring 411 rotate in opposite directions. The air inlet of the first cavity 51 is connected to the outside, the air outlet of the first cavity 51 is connected to the air inlet of the second cavity 52, and the air outlet of the second cavity 52 is connected to the air pressure chamber 3.

[0042] In this embodiment, as Figure 1As shown, taking a cylindrical structure for both the base 1 and the movable frame 2, the movable frame 2 is rotatably fitted into the inner cavity of the base 1 around the central axis of the base 1. The first gear ring 411 can be fixed to the inner wall of the movable frame 2 through a corresponding connecting structure. When the movable frame 2 rotates in the first direction, it can drive the first gear ring 411 to rotate in the first direction around the central axis of the base 1. The first gear 421 and the second gear 422 are both set in the inner cavity of the movable frame 2 and rotatably connected to the base 1. The lower part of the first gear 421 meshes with the lower part of the first gear ring 411. The meshing area of ​​the first gear 421 and the first gear ring 411 divides the first cavity 51 into a first sub-cavity 511 on the left and a second sub-cavity 512 on the right. The first sub-cavity 511 is connected to the air inlet. The upper part of the first gear 421 meshes with the lower part of the second gear 422. The meshing area of ​​the first gear 421 and the second gear 422 divides the second cavity 52 into a third sub-cavity 521 on the right and a fourth sub-cavity 522 on the left. The third sub-cavity 521 is connected to the second sub-cavity 512, and the fourth sub-cavity 522 is connected to the exhaust port.

[0043] Based on the above settings, taking the first direction as counterclockwise and the second direction as clockwise as an example, when the movable frame 2 drives the first gear ring 411 to rotate counterclockwise, the first gear ring 411 drives the first gear 421 to rotate counterclockwise, and the first gear 421 drives the second gear 422 to rotate clockwise. During this process, based on the meshing and disengagement action between the corresponding gear teeth, the external gas entering the first sub-cavity 511 through the air inlet can be pumped to the second sub-cavity 512 through the meshing area of ​​the first gear 421 and the first gear ring 411, and then flows from the second sub-cavity 512 to the third sub-cavity 521. The gas entering the third sub-cavity 521 can be pumped to the fourth sub-cavity 522 through the meshing area of ​​the first gear 421 and the second gear 422, and then supplied into the air pressure chamber 3 through the exhaust port. Thus, during the rotation of the movable frame 2, the continuous pumping of gas from the outside to the air pressure chamber 3 is realized.

[0044] In one embodiment, refer to Figure 1 The pump chamber 5 also includes a third chamber 53 and a fourth chamber 54 disposed inside the base 1; the driven gear assembly 42 also includes a third gear 423, which meshes with the first gear ring 411 in the third chamber 53, and meshes with the second gear 422 in the fourth chamber 54, and the third gear 423 rotates in the same direction as the first gear ring 411; The air inlet of the third chamber 53 is connected to the outside, the exhaust port of the third chamber 53 is connected to the air inlet of the fourth chamber 54, and the exhaust port of the fourth chamber 54 is connected to the air inlet of the second chamber 52.

[0045] In this embodiment, it is still based on Figure 1As shown in the example, the third gear 423 is disposed in the inner cavity of the movable frame 2 and rotatably connected to the base 1; the upper part of the third gear 423 meshes with the upper part of the first gear ring 411, and the meshing area of ​​the third gear 423 and the first gear ring 411 divides the third cavity 53 into the fifth sub-cavity 531 on the right and the sixth sub-cavity 532 on the left, and the fifth sub-cavity 531 is connected to the air inlet; the lower part of the third gear 423 meshes with the upper part of the second gear 422, and the meshing area of ​​the third gear 423 and the second gear 422 divides the fourth cavity 54 into the seventh sub-cavity 541 on the left and the eighth sub-cavity 542 on the right, the seventh sub-cavity 541 is connected to the sixth sub-cavity 532, and the eighth sub-cavity 542 is connected to the third sub-cavity 521. It is understandable that the air inlet corresponding to the first sub-cavity 511 is the first air inlet, and the air inlet corresponding to the fifth sub-cavity 531 is the second air inlet. The first air inlet and the second air inlet can be set as different gas inlets.

[0046] Based on the above settings, taking the first direction as counterclockwise and the second direction as clockwise as an example, when the movable frame 2 drives the first gear ring 411 to rotate counterclockwise, the first gear ring 411 drives the first gear 421 and the third gear 423 to rotate counterclockwise, and the first gear 421 and the third gear 423 drive the second gear 422 to rotate clockwise. During this process, based on the meshing and disengagement action between the corresponding gear teeth, the external gas entering the first sub-cavity 511 from the first air inlet can be pumped to the second sub-cavity 512 through the meshing area of ​​the first gear 421 and the first gear ring 411, and then flows from the second sub-cavity 512 to the third sub-cavity 521. The gas entering the third sub-cavity 521 can be pumped through the meshing area of ​​the first gear 421 and the second gear ring 422. The gas is pumped from the meshing area of ​​gear 422 to the fourth sub-cavity 522, and then supplied into the pneumatic chamber 3 through the exhaust port. At the same time, the external gas entering the fifth sub-cavity 531 through the second air inlet can be pumped to the sixth sub-cavity 532 through the meshing area of ​​the third gear 423 and the first gear ring 411, and then flows from the sixth sub-cavity 532 to the seventh sub-cavity 541. The gas entering the seventh sub-cavity 541 can be pumped to the eighth sub-cavity 542 through the meshing area of ​​the third gear 423 and the second gear 422, and then flows from the eighth sub-cavity 542 to the third sub-cavity 521. The gas entering the third sub-cavity 521 can be pumped to the fourth sub-cavity 522 through the meshing area of ​​the first gear 421 and the second gear 422, and then supplied into the pneumatic chamber 3 through the exhaust port.

[0047] As can be seen, based on the multi-gear meshing structure in this embodiment, external gas can enter the pump chamber 5 through two different gas paths, and then the two gas paths are combined and supplied into the air pressure chamber 3. In this way, the air supply rate and total air supply can be increased without changing the rotation angle and rotation speed of the movable frame 2. This can solve the problem that the gas in the air pressure chamber 3 cannot be replenished in time due to the rapid rotation of the movable frame 2 and the sudden increase in the volume of the air pressure chamber 3, reduce the occurrence of air suction, and better adapt to the application scenarios of the flexible display screen 2000 with large-scale rapid folding and unfolding.

[0048] Preferably, a one-way valve can be installed in the connecting air passage between the air inlet, the first cavity 51, the second cavity 52, the third cavity 53, the fourth cavity 54, and the exhaust port to ensure that the gas always flows in one direction in a preset direction and to prevent the gas from flowing in the opposite direction and causing leakage.

[0049] In one embodiment, refer to Figure 1 The folding screen holding assembly 1000 also includes a drive shaft 6, which is connected to the movable frame 2 and engages with the first gear ring 411. The movable frame 2 drives the first gear ring 411 to rotate synchronously through the drive shaft 6.

[0050] Specifically, taking the base 1 and the movable frame 2 as a cylindrical structure as shown in the figure as an example, the movable frame 2 is rotatably fitted into the inner cavity of the base 1, and the first gear ring 411 is coaxially arranged in the inner cavity of the movable frame 2; multiple baffle structures 4111 can be spaced apart on the outer side wall of the first gear ring 411, and the gap area between at least two baffle structures 4111 forms a connecting groove; the middle part of the transmission shaft 6 is fixed on the movable frame 2, and the inward end of the transmission shaft 6 can be fitted into the connecting groove of the first gear ring 411 by means of insertion, snap-fit, etc.; in this way, when the movable frame 2 rotates relative to the base 1, the first gear ring 411 can be driven to rotate synchronously through the transmission shaft 6, thereby realizing the power transmission between the movable frame 2 and the first gear ring 411 in a convenient way; it is also convenient to adjust the connection position between the transmission shaft 6 and the first gear ring 411 in the future to adapt to different transmission requirements.

[0051] Preferably, such as Figure 1 As shown, the number of drive shafts 6 can be set to two, with the two drive shafts 6 corresponding to each other and fitted at different positions on the first gear ring 411, so as to enhance the connection stability and transmission accuracy between the movable frame 2 and the first gear ring 411.

[0052] In one embodiment, refer to Figure 1 The base 1 is provided with a limiting part 11; when the movable frame 2 rotates relative to the base 1 in the first direction to the critical position, the limiting part 11 is used to abut against the drive shaft 6 to prevent the movable frame 2 from continuing to rotate in the first direction.

[0053] Specifically, base 1 is configured as follows: Figure 1 Taking the cylindrical structure shown as an example, the movable frame 2 is rotatably fitted into the inner cavity of the base 1, and the limiting part 11 can be a boss structure protruding from the inner side wall of the base 1; when the movable frame 2 rotates relative to the base 1 in the first direction to the critical position, the limiting part 11 can abut against the corresponding structure on the movable frame 2 to prevent the movable frame 2 from continuing to rotate in the first direction, thereby avoiding damage to the flexible display screen 2000 caused by excessive rotation angle due to the rotation of the movable frame 2.

[0054] When the movable frame 2 is equipped with a drive shaft 6, such as Figure 1 As shown, the limiting part 11 can abut against the outward end of the drive shaft 6 to prevent the movable frame 2 from continuing to rotate in the first direction.

[0055] In one embodiment, refer to Figure 1 The foldable screen retaining assembly 1000 also includes a pressure relief valve 8, which is disposed on the base 1. One end of the pressure relief valve 8 is connected to the air pressure chamber 3, and the other end of the pressure relief valve 8 is connected to the outside.

[0056] In practical applications, when the flexible display screen 2000 needs to be rotated in the opposite direction to reset (for example, when the flexible display screen 2000 in the folded state needs to be reset to the initial unfolded state), the pressure relief valve 8 can be opened to discharge the gas in the pressure chamber 3 that is used to generate resistance outward through the pressure relief valve 8. Then the movable frame 2 can be driven to rotate relative to the base 1 in the second direction to the initial angle position, thereby conveniently realizing the reset operation of the flexible display screen 2000.

[0057] In one embodiment, refer to Figure 1 The drive shaft 6 is configured as a first magnet 61, and the base 1 is provided with a second magnet 7; The second magnet 7 is used to magnetically engage with the first magnet 61 to prevent the movable frame 2 from rotating relative to the base 1.

[0058] Specifically, in one embodiment, one of the first magnet 61 and the second magnet 7 can be configured as a magnetic element, and the other of the first magnet 61 and the second magnet 7 can be configured as a metal element that can be magnetically attracted; in another embodiment, the first magnet 61 and the second magnet 7 can be configured as magnetic elements with opposite magnetic poles.

[0059] In practical applications, base 1 is set as follows: Figure 1Taking the cylindrical structure shown as an example, the movable frame 2 is rotatably fitted into the inner cavity of the base 1, and the second magnet 7 can be disposed on the inner side wall of the base 1, with the position of the second magnet 7 corresponding to the initial angular position of the movable frame 2. During the reset process of the flexible display screen 2000, when the pressure relief valve 8 is opened, it can drive the movable frame 2 to rotate relative to the base 1 in the second direction; when the first magnet 61 rotates with the movable frame 2 into the adsorption range of the second magnet 7, based on the magnetic adsorption effect between the first magnet 61 and the second magnet 7, the first magnet 61 can be attracted and quickly moved to the position opposite to the second magnet 7, thereby driving the movable frame 2 to quickly rotate to the preset initial angular position, realizing the rapid and accurate reset of the flexible display screen 2000.

[0060] This application also provides a display device; please refer to [link / reference]. Figures 1 to 4 The display device includes a flexible display screen 2000 and at least two folding screen holding components 1000 in any of the above embodiments; At least two folding screen holding components 1000 are arranged sequentially from front to back, and the movable frame 2 of each folding screen holding component 1000 is connected to the base 1 of the other folding screen holding component 1000 on the rear side; the flexible display screen 2000 is laid on the at least two folding screen holding components 1000, and the flexible display screen 2000 is connected to the base 1 of the at least two folding screen holding components 1000.

[0061] In this embodiment, the display device may include foldable terminal devices with display functions such as mobile phones and tablet computers. The flexible display screen 2000 is the core display component of the display device, and it, together with the folding screen holding assembly 1000, constitutes the main body of the display device. The flexible display screen 2000 may include multiple stacked functional film layers with flexible folding capabilities, such as a display layer, a component layer, and a structural layer for separation; for example... Figure 4 As shown, the flexible display screen 2000 may include an OLED display layer 2100 and a flexible transition layer 2200. The OLED display layer 2100 is located on the outermost side and is used to display images and screens. The flexible transition layer 2200 is disposed between the OLED display layer 2100 and a retaining component layer 10000 composed of multiple folding screen retaining components 1000. The flexible transition layer 2200 can adapt to the folding action of the OLED display layer 2100 and the rotation action of the folding screen retaining components 1000 based on its own elastic deformation characteristics. It can also form a barrier between the OLED display layer 2100 and the retaining component layer 10000 to prevent the folding screen retaining components 1000 from directly contacting the OLED display layer 2100 and causing damage to the OLED display layer 2100.

[0062] For the specific structure of the foldable screen holding component 1000, please refer to the description of the above embodiments. Since the display device in this embodiment adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments.

[0063] Furthermore, the number of foldable screen retaining components is set to 1000 as follows: Figure 3 and Figure 4 The eight examples shown are used as examples, and with Figure 3 and Figure 4 The left and right directions shown are the front and back directions in this embodiment. The flexible display screen 2000 in this embodiment can be provided with 8 folding areas at intervals along the left and right directions. The 8 folding screen holding components 1000 are also arranged sequentially from left to right. The flexible display screen 2000 can be laid on the upper and / or lower sides of the 8 folding screen holding components 1000. Each folding area of ​​the flexible display screen 2000 is provided with a corresponding folding screen holding component 1000. The base 1 of the 8 folding screen holding components 1000 is connected to the flexible display screen 2000. Among them, the movable frame 2 of the leftmost folding screen holding assembly 1000 is connected to the base 1 of the second folding screen holding assembly 1000 from the left; the movable frame 2 of the second folding screen holding assembly 1000 from the left is connected to the base 1 of the third folding screen holding assembly 1000 from the left; the movable frame 2 of the third folding screen holding assembly 1000 from the left is connected to the base 1 of the fourth folding screen holding assembly 1000 from the left; the movable frame 2 of the fourth folding screen holding assembly 1000 from the left is connected to the base 1 of the fifth folding screen holding assembly 1000 from the left; the movable frame 2 of the fifth folding screen holding assembly 1000 from the left is connected to the base 1 of the sixth folding screen holding assembly 1000 from the left; the movable frame 2 of the sixth folding screen holding assembly 1000 from the left is connected to the base 1 of the seventh folding screen holding assembly 1000 from the left; and the movable frame 2 of the seventh folding screen holding assembly 1000 from the left is connected to the base 1 of the eighth folding screen holding assembly 1000 from the left.

[0064] Based on the above connection method of multiple folding screen holding components 1000, starting from the second folding screen holding component 1000 from the left, each folding screen holding component 1000 can rotate relative to the adjacent folding screen holding component 1000 on the left in response to the rotation of the flexible display screen 2000 around the corresponding folding area. Specifically, when the flexible display screen 2000 rotates counterclockwise around the folding area where the sixth folding screen holding component 1000 from the left is located, it can simultaneously drive the seventh and eighth folding screen holding components 1000 from the left to rotate counterclockwise relative to the sixth folding screen holding component 1000 from the left. After the flexible display screen 2000 rotates to the target angle, the air pressure locking action between the movable frame 2 and the base 1 in the sixth folding screen holding component 1000 from the left can suspend the flexible display screen 2000 at the current target angle position. Similarly, when the flexible display screen 2000 rotates counterclockwise around the folding area where the sixth folding screen holding component 1000 from the left is located, it can rotate counterclockwise relative to the sixth folding screen holding component 1000 from the left. When the folding area containing the fourth folding screen holding component 1000 rotates counterclockwise, it simultaneously drives the fifth, sixth, seventh, and eighth folding screen holding components 1000 from the left to rotate counterclockwise relative to the fourth folding screen holding component 1000 from the left. After the flexible display screen 2000 rotates to the target angle, the air pressure locking between the movable frame 2 and the base 1 in the fourth folding screen holding component 1000 from the left suspends the flexible display screen 2000 at the current target angle position. The rotation and locking operations of the flexible display screen 2000 around other folding areas are similar, and will not be described in detail here.

[0065] As can be seen, the flexible display screen 2000 in this embodiment has multiple folding areas, and each folding area is provided with an independent folding screen holding component 1000. The pneumatic locking actions of each folding screen holding component 1000 do not interfere with each other. In this way, the user can drive the flexible display screen 2000 to rotate around different folding areas to different angles and hold them stably, so that the flexible display screen 2000 can present different folding and unfolding states. For example, the flexible display screen 2000 can be fully unfolded or folded into a Z-shape, a stepped shape, a curved shape, etc., to better adapt to the display needs of different application scenarios, thereby significantly improving the operational flexibility and applicability of the display device.

[0066] It should be noted that the above specific implementation method is only used to illustrate the operation process. In actual applications, the number of foldable screen holding components 1000 is not limited to 8. The specific number can be set according to the folding requirements of the flexible display screen 2000, and is not limited here.

[0067] In one embodiment, refer to Figure 5 and Figure 6The flexible display screen 2000 includes a first display screen body 2300 and a second display screen body 2400, with the first display screen body 2300 stacked on the second display screen body 2400; at least two folding screen holding components 1000 are embedded between the first display screen body 2300 and the second display screen body 2400, with the first display screen body 2300 connected to the base 1 of the at least two folding screen holding components 1000, and the second display screen body 2400 connected to the base 1 of the at least two folding screen holding components 1000.

[0068] In this embodiment, as Figure 5 and Figure 6 As shown, the first display screen body 2300 is laid on the upper side of multiple folding screen holding components 1000, and the second display screen body 2400 is laid on the lower side of multiple folding screen holding components 1000. Both the first display screen body 2300 and the second display screen body 2400 are connected to the base 1 of each folding screen holding component 1000. Based on this configuration, when the user folds or unfolds the flexible display screen 2000, both the first display screen body 2300 and the second display screen body 2400 can be stably held at their current angle position by the air pressure locking effect of the folding screen holding components 1000.

[0069] In this embodiment, by setting the flexible display screen 2000 as a first display screen body 2300 and a second display screen body 2400 distributed on the upper and lower sides of the folding screen holding component 1000, the display device can achieve a double-sided display function. On the other hand, the first display screen body 2300 and the second display screen body 2400 can completely cover the folding screen holding component 1000, thereby forming a certain enclosure and protection effect on the folding screen holding component 1000 and improving the aesthetics of the overall structure of the display device.

[0070] The above description is merely an exemplary embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A foldable screen holding component, characterized in that, The foldable screen retaining component includes: Base for connecting flexible displays; A movable frame is rotatably connected to the base; a pneumatic chamber is provided between the movable frame and the base; as the movable frame rotates relative to the base in a first direction, the volume of the pneumatic chamber gradually increases. A pumping mechanism is mounted on the movable frame; the inlet of the pumping mechanism is connected to the outside, and the outlet of the pumping mechanism is connected to the pressure chamber; the pumping mechanism is used to convert the rotation of the movable frame along the first direction into a gas pumping action, so as to pump the outside gas to the pressure chamber, thereby preventing the movable frame from rotating relative to the base along the second direction through the air pressure in the pressure chamber; the second direction is opposite to the first direction.

2. The foldable screen holding assembly according to claim 1, characterized in that, The pumping mechanism includes a driving gear assembly and a driven gear assembly; the driving gear assembly rotates synchronously with the movable frame, the driven gear assembly is rotatably connected to the base, the driven gear assembly meshes with the driving gear assembly in the pump chamber, the air inlet of the pump chamber is connected to the outside, and the air outlet of the pump chamber is connected to the air pressure chamber.

3. The foldable screen holding assembly according to claim 2, characterized in that, The pump chamber includes a first cavity and a second cavity disposed within the base; the driving gear assembly includes a first gear ring, and the driven gear assembly includes a first gear and a second gear. The first gear meshes with the first gear ring in the first cavity, and the first gear meshes with the second gear in the second cavity. The first gear and the first gear ring rotate in the same direction, and the second gear and the first gear ring rotate in opposite directions. The air inlet of the first cavity is connected to the outside, the air outlet of the first cavity is connected to the air inlet of the second cavity, and the air outlet of the second cavity is connected to the air pressure chamber.

4. The foldable screen holding assembly according to claim 3, characterized in that, The pump chamber further includes a third chamber and a fourth chamber disposed within the base; the driven gear assembly further includes a third gear, which meshes with the first gear ring in the third chamber, and meshes with the second gear in the fourth chamber, and rotates in the same direction as the first gear ring; The air inlet of the third cavity is connected to the outside, the air outlet of the third cavity is connected to the air inlet of the fourth cavity, and the air outlet of the fourth cavity is connected to the air inlet of the second cavity.

5. The foldable screen holding assembly according to claim 3, characterized in that, The folding screen holding assembly also includes a drive shaft, which is connected to the movable frame and engages with the first gear ring; the movable frame drives the first gear ring to rotate synchronously through the drive shaft.

6. The foldable screen holding assembly according to claim 5, characterized in that, The drive shaft is configured as a first magnet, and the base is provided with a second magnet; The second magnet is used to magnetically engage with the first magnet to prevent the movable frame from rotating relative to the base.

7. The foldable screen holding assembly according to claim 5, characterized in that, The base is provided with a limiting part; when the movable frame rotates relative to the base in the first direction to a critical position, the limiting part is used to abut against the drive shaft to prevent the movable frame from continuing to rotate in the first direction.

8. The folding screen holding assembly according to any one of claims 1 to 7, characterized in that, The foldable screen retaining assembly also includes a pressure relief valve, which is disposed on the base. One end of the pressure relief valve is connected to the air pressure chamber, and the other end of the pressure relief valve is connected to the outside.

9. A display device, characterized in that, The display device includes a flexible display screen and at least two folding screen holding components as described in any one of claims 1 to 8; At least two of the folding screen holding components are arranged sequentially from front to back, and the movable frame of each of the folding screen holding components is connected to the base of the other folding screen holding component adjacent to it on the rear side; The flexible display screen is laid on at least two of the folding screen holding components, and the flexible display screen is connected to the base of at least two of the folding screen holding components.

10. The display device according to claim 9, characterized in that, The flexible display screen includes a first display screen body and a second display screen body, with the first display screen body stacked on the second display screen body; at least two folding screen holding components are embedded between the first display screen body and the second display screen body, with the first display screen body connected to the base of the at least two folding screen holding components and the second display screen body connected to the base of the at least two folding screen holding components.

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