Folding screen holding assembly and display device

Abstract

The application discloses a folding screen holding assembly and a display device, and relates to the technical field of folding display screens. The folding screen holding assembly comprises a base, a movable frame and a pumping mechanism. The base is used for connecting a flexible display screen. The movable frame is rotatably connected to the base. A gas pressure chamber is arranged between the movable frame and the base. The volume of the gas pressure chamber gradually increases during the forward rotation of the movable frame relative to the base. The pumping mechanism is arranged on the movable frame. The gas inlet end of the pumping mechanism is in communication with the outside world, and the gas outlet end of the pumping mechanism is in communication with the gas pressure chamber. The pumping mechanism is used for converting the rotation of the movable frame into a gas pumping action, so as to pump the outside gas into the gas pressure chamber, thereby preventing the reverse rotation of the movable frame relative to the base through the gas pressure effect of the gas pressure chamber. According to the scheme, the rotation of the movable frame relative to the base drives the pumping mechanism to supply gas to the gas pressure chamber, so as to prevent the reverse rotation of the movable frame through the gas pressure effect, and thus the rotation angle of the flexible display screen can be instantaneously locked.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of folding display screens, and in particular to a folding screen holding assembly and a display device. BACKGROUND

[0002] With the development of electronic display devices towards thinness and flexibility, foldable flexible display screens are gradually applied to various terminal devices. At present, the mainstream flexible folding display devices on the market generally use traditional hinge mechanisms to realize the folding and unfolding functions of flexible display screens, which can meet the basic functional requirements of folding and unfolding display of display devices.

[0003] However, the traditional hinge mechanism generally adopts a mechanical clamping form, which can only provide a mechanical locking action at a plurality of discrete angle positions. Once the flexible display screen is folded to a non-pre-set angle, the hinge mechanism cannot generate a continuous holding torque at the angle position, and the flexible display screen will automatically slide to the nearest mechanical clamping position under the action of gravity and other external forces, resulting in that the user cannot stably hover the flexible display screen at any desired folding angle, the use flexibility is poor, and it is difficult to meet the application requirements in multi-angle and multi-form display scenarios. SUMMARY

[0004] The main purpose of the present application is to provide a folding screen holding assembly, which aims to solve the technical problems that the folding and locking operations of the current flexible display screen depend on the hinge mechanism, and the flexible display screen can only be locked at a plurality of discrete angle positions after folding, and cannot be stably hovered at any desired folding angle, resulting in poor use flexibility and difficulty in meeting different display requirements.

[0005] To achieve the above-mentioned purpose, the folding screen holding assembly provided by the present application comprises:

[0006] a base for connecting a flexible display screen;

[0007] a movable frame rotatably connected to the base; a gas pressure chamber is arranged between the movable frame and the base; during the rotation of the movable frame relative to the base in a first direction, the volume of the gas pressure chamber gradually increases;

[0008] a pumping mechanism arranged on the movable frame; the gas inlet end of the pumping mechanism is in communication with the outside, and the gas outlet end of the pumping mechanism is in communication with the gas pressure chamber; the pumping mechanism is used to convert the rotation of the movable frame in the first direction into a gas pumping action, so as to pump the outside gas into the gas pressure chamber, thereby preventing the movable frame from rotating relative to the base in a second direction through the gas pressure action of the gas pressure chamber; the second direction is opposite to the first direction.

[0009] In an embodiment, the pumping mechanism comprises 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 is engaged with the driving gear assembly in a pumping cavity, an air inlet of the pumping cavity is in communication with the outside, and an air outlet of the pumping cavity is in communication with the air pressure chamber.

[0010] In an embodiment, the pumping cavity comprises a first cavity and a second cavity arranged in the base; the driving gear assembly comprises a first gear ring, the driven gear assembly comprises a first gear and a second gear, the first gear is engaged with the first gear ring in the first cavity, the first gear is engaged with the second gear in the second cavity, the first gear rotates in the same direction as the first gear ring, and the second gear rotates in the opposite direction as the first gear ring.

[0011] The air inlet of the first cavity is in communication with the outside, the air outlet of the first cavity is in communication with the air inlet of the second cavity, and the air outlet of the second cavity is in communication with the air pressure chamber.

[0012] In an embodiment, the pumping cavity further comprises a third cavity and a fourth cavity arranged in the base; the driven gear assembly further comprises a third gear, the third gear is engaged with the first gear ring in the third cavity, the third gear is engaged with the second gear in the fourth cavity, and the third gear rotates in the same direction as the first gear ring.

[0013] The air inlet of the third cavity is in communication with the outside, the air outlet of the third cavity is in communication with the air inlet of the fourth cavity, and the air outlet of the fourth cavity is in communication with the air inlet of the second cavity.

[0014] In an embodiment, the folding screen retaining assembly further comprises a transmission shaft connected to the movable frame, the transmission shaft is in snap-fit engagement with the first gear ring, and the movable frame drives the first gear ring to rotate synchronously through the transmission shaft.

[0015] In an embodiment, the transmission shaft is provided as a first magnet, and the base is provided with a second magnet.

[0016] The second magnet is used to magnetically attract the first magnet to prevent the movable frame from rotating relative to the base.

[0017] In an embodiment, the base is provided with a limiting portion; when the movable frame rotates relative to the base to a critical position along the first direction, the limiting portion is used to abut against the transmission shaft to prevent the movable frame from continuing to rotate along the first direction.

[0018] In an embodiment, the folding screen holding assembly further comprises a pressure relief valve, which is arranged on the base, one end of the pressure relief valve is in communication with the air pressure chamber, and the other end of the pressure relief valve is in communication with the outside.

[0019] The application further provides a display device, which comprises a flexible display screen and at least two folding screen holding assemblies as described above.

[0020] The at least two folding screen holding assemblies are arranged in sequence from front to back, the movable frame of each folding screen holding assembly is connected to the base of another folding screen holding assembly adjacent to the rear side, the flexible display screen is laid on the at least two folding screen holding assemblies, and the flexible display screen is connected to the bases of the at least two folding screen holding assemblies.

[0021] In an embodiment, the flexible display screen comprises a first display screen body and a second display screen body, the first display screen body is superimposed on the second display screen body, the at least two folding screen holding assemblies are inlaid between the first display screen body and the second display screen body, the first display screen body is connected to the bases of the at least two folding screen holding assemblies, and the second display screen body is connected to the bases of the at least two folding screen holding assemblies.

[0022] The folding screen holding assembly provided by the application utilizes the kinetic energy of the movable frame rotating relative to the base in the first direction to drive the pumping mechanism, so as to pump the outside air into the air pressure chamber by the mechanical transmission of the pumping mechanism, so that the air pressure in the air pressure chamber is maintained in a dynamic balance state, so that the air pressure difference between the air pressure chamber and the outside can be used to prevent the movable frame from rotating in the second direction. The above locking process does not need to additionally configure a power source such as a motor and a servo device, but can realize the instant locking of the movable frame at any angle only by mechanical energy conversion, which not only simplifies the structure of the assembly and reduces the manufacturing cost, but also avoids the problems of operation failure, energy consumption increase and the like caused by the additional power source. When the folding screen holding assembly is arranged in the folding area of the flexible display screen, the above characteristics can be directly converted into the stepless adjustment function of the folding angle of the flexible display screen. In the process of driving the flexible display screen to fold around the folding area, the movable frame is driven to rotate relative to the base in the first direction and synchronously drive the pumping mechanism, so that the air pressure chamber maintains a dynamic air pressure balance, so that when the flexible display screen is rotated to any angle, the air pressure in the air pressure chamber can prevent the flexible display screen from rotating in the reverse direction, thereby realizing the instant and stable hovering of the flexible display screen at the angle position.

[0023] The scheme breaks through the discrete angle limitation of the mechanical clamping mode relied on by the traditional hinge mechanism, so that the flexible display screen can adapt to the display scene demand of multiple angles and multiple forms, such as arbitrary pitch angle adjustment in a video conference, half-folded state retention in a reading mode, etc., thereby improving the use flexibility and scene adaptability of the flexible display screen, and further enhancing the reliability and long-term stability of the folding screen retention assembly through the pure mechanical locking mechanism without an additional power source. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor based on the drawings shown.

[0025] Figure 1 The overall structure schematic diagram of an embodiment of the folding screen retention assembly provided by the present application is shown in the figure.

[0026] Figure 2 The overall structure schematic diagram of an embodiment of the display device provided by the present application is shown in the figure.

[0027] Figure 3 The structure schematic diagram of the flexible display screen in the fully unfolded state in an embodiment of the display device provided by the present application is shown in the figure.

[0028] Figure 4 The structure schematic diagram of the flexible display screen in the folded state in an embodiment of the display device provided by the present application is shown in the figure.

[0029] Figure 5 The structure schematic diagram of the flexible display screen in the fully unfolded state in another embodiment of the display device provided by the present application is shown in the figure.

[0030] Figure 6 The structure schematic diagram of the flexible display screen in the folded state in another embodiment of the display device provided by the present application is shown in the figure.

[0031] Explanation of reference numerals:

[0032] 10000, retention assembly layer;

[0033] 1000, folding screen retention assembly;

[0034] 2000, flexible display screen; 2100, OLED display layer; 2200, flexible adapter layer; 2300, first display screen body; 2400, second display screen body;

[0035] 1, base; 11, limiting portion;

[0036] 2, movable frame; 3, air pressure chamber;

[0037] 4, pumping mechanism; 4a, air inlet end; 4b, air outlet end;

[0038] 41, driving gear assembly; 42, driven gear assembly; 411, first ring gear; 421, first gear; 422, second gear; 423, third gear; 4111, barrier structure;

[0039] 5, pump cavity; 51, first cavity; 52, second cavity; 53, third cavity; 54, fourth cavity; 511, first sub-cavity; 512, second sub-cavity; 521, third sub-cavity; 522, fourth sub-cavity; 531, fifth sub-cavity; 532, sixth sub-cavity; 541, seventh sub-cavity; 542, eighth sub-cavity;

[0040] 6, transmission shaft; 61, first magnet;

[0041] 7, second magnet; 8, pressure relief valve.

[0042] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0044] It should be noted that if the present application involves directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications will also change accordingly.

[0045] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope claimed by the present application.

[0046] With the development of electronic display devices towards light and thin, flexible, foldable flexible display screens are gradually applied to various terminal devices. At present, the mainstream flexible folding display device in the market generally uses traditional hinge mechanism to realize the folding and unfolding function of flexible display screen, which can meet the basic functional requirements of folding and unfolding display of display device.

[0047] However, the traditional hinge mechanism generally adopts mechanical clamping form, which can only provide mechanical locking action at a plurality of discrete angle positions; once the flexible display screen is folded to a non-pre-set angle, the hinge mechanism cannot generate a continuous holding torque at the angle position, and the flexible display screen will slide to the nearest mechanical clamping position under the action of gravity and other external forces, resulting in that the user cannot stably hover the flexible display screen at any desired folding angle, the use flexibility is poor, and it is difficult to meet the application requirements in multi-angle and multi-form display scenarios.

[0048] In order to solve the above problems, the present application provides a folding screen holding assembly, the movable frame can be rotated to any angle position relative to the base, and the movable frame can be locked at the angle position by air pressure; based on the above characteristics, the folding screen holding assembly can be applied to the folding area of the flexible display screen instead of the traditional hinge mechanism, when the flexible display screen is rotated to any angle around the folding area, the folding screen holding assembly can be used to stably hover the flexible display screen at the current folding position, that is, the stepless adjustment of the folding angle of the flexible display screen is realized, thereby improving the use flexibility of the flexible display screen, and better meeting the application requirements in multi-angle and multi-form display scenarios.

[0049] Please refer to Figure 1 , and auxiliary reference Figures 2 to 4 , an embodiment of the present application provides a folding screen holding assembly 1000, comprising:

[0050] The base 1 is used for connecting the flexible display screen 2000;

[0051] The movable frame 2 is rotatably connected to the base 1; a gas pressure chamber 3 is arranged between the movable frame 2 and the base 1; during the rotation of the movable frame 2 relative to the base 1 along the first direction, the volume of the gas pressure chamber 3 gradually increases.

[0052] The pumping mechanism 4 is arranged on the movable frame 2; the gas inlet end 4a of the pumping mechanism 4 is in communication with the outside, and the gas outlet end 4b of the pumping mechanism 4 is in communication with the gas pressure chamber 3; the pumping mechanism 4 is used to convert the rotation of the movable frame 2 along the first direction into a gas pumping action, so as to pump the outside gas into the gas pressure chamber 3, thereby preventing the movable frame 2 from rotating relative to the base 1 along the second direction by the gas pressure action of the gas pressure chamber 3; the second direction is opposite to the first direction.

[0053] In the embodiment, the flexible display screen 2000 can include a plurality of functional film layers arranged in a stack and having a flexible folding function, such as a display layer, an element layer, and a structural layer for a separation function, etc.; the display layer is at the outermost side and is used to display images and pictures.

[0054] The base 1 can be designed as a cylindrical, annular, plate-shaped or strip-shaped structure according to the folding area contour of the flexible display screen 2000; for example, the base 1 is designed as a cylindrical structure as shown in Figure 1 The outer cylindrical surface is provided with a mounting structure (such as a clamping groove, an adhesive surface, etc.) for connecting the flexible display screen 2000, so as to realize the fixed connection with the flexible display screen 2000.

[0055] The structure of the movable frame 2 is matched with the base 1; the movable frame 2 can be directly rotatably matched with the base 1, or the movable frame 2 can be rotatably assembled with the base 1 through a rotating connection structure (such as a pivot, a rotating shaft, a hinge shaft, etc.), so that the movable frame 2 can rotate relative to the base 1 around a preset axis. For example, the base 1 is designed as a cylindrical structure as shown in Figure 1 The movable frame 2 can be designed as a columnar structure and rotatably matched with the inner cavity of the base 1 around the central axis of the base 1.

[0056] The matching surface between the movable frame 2 and the base 1 can be enclosed to form a closed gas pressure chamber 3 through a sealing design (such as a sealing groove, a sealing ring, etc.), and the volume of the gas pressure chamber 3 changes with the rotation of the movable frame 2 relative to the base 1. For example, the base 1 is designed as a cylindrical structure as shown in Figure 1The shown cylindrical structure is an example, the movable frame 2 is arranged as a columnar structure and is rotatably fitted in the inner cavity of the base 1 around the central axis of the base 1; the base 1 is provided with a circumferentially extending air-tight sliding groove, and the movable frame 2 is provided with an air-tight stopper which is slidingly fitted in the air-tight sliding groove, and an air-tight space between the air-tight stopper and the target end of the air-tight sliding groove constitutes the air pressure chamber 3; when the movable frame 2 rotates relative to the base 1 in the first direction, the distance between the air-tight stopper and the target end of the air-tight sliding groove gradually increases, so that the volume of the air pressure chamber 3 gradually increases. The first direction can be arranged as a clockwise direction or a counterclockwise direction.

[0057] The pumping mechanism 4 can convert the rotation of the movable frame 2 relative to the base 1 into a gas pumping action by mechanical transmission, for example, in the form of a gear pump, a piston pump, etc.; taking the gear pump as an example, the movable frame 2 drives the driving part (such as the driving gear) of the pumping mechanism 4 to rotate synchronously when it rotates, and the driving part drives the driven part (such as the driven gear) to move through meshing or connecting rod structure, so that an air pressure difference can be formed in the pump cavity 5; the existence of the air pressure difference can drive the gas to flow from one end to the other end of the pump cavity 5. Based on the above principle, when the air inlet end 4a of the pumping mechanism 4 is communicated with the outside and the air outlet end 4b is communicated with the air pressure chamber 3, and the movable frame 2 rotates relative to the base 1 in the first direction, the pumping mechanism 4 can continuously pump the outside air into the air pressure chamber 3 based on the above pressure difference; the gas pumping action and the volume increasing action of the air pressure chamber 3 are kept synchronous, and the amount of gas in the air pressure chamber 3 will increase at a matching rate as the volume of the air pressure chamber 3 increases, so that the gas pressure in the air pressure chamber 3 can be maintained in a relatively constant dynamic balance state; under the action of the gas pressure in the air pressure chamber 3, since the second direction is opposite to the first direction (for example, the first direction is counterclockwise, and the second direction should be clockwise), when the movable frame 2 has a movement tendency of rotating in the second direction under the action of external force, the gas pressure in the air pressure chamber 3 will generate a reverse resistance to the movable frame 2, so that the movable frame 2 can be prevented from rotating relative to the base 1 in the second direction, realizing the locking of the movable frame 2, so that the movable frame 2 can be kept at the current angle position, and at the same time, the movable frame 2 can continue to rotate relative to the base 1 in the first direction.

[0058] Based on the above characteristics of the folding screen holding assembly 1000, in actual application, the folding screen holding assembly 1000 can be arranged at a folding area of the flexible display screen 2000, which 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 with the flexible display screen 2000 in the first direction; during the rotation process, 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, so that the gas pressure in the air pressure chamber 3 is kept in a dynamic balance 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 (i.e., preventing the movable frame 2 from rotating in the second direction) under the action of external forces such as gravity, so that the flexible display screen 2000 can be stably suspended at the current angle position; 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.

[0059] Therefore, based on the folding screen holding assembly 1000 provided in the 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 that external gas is pumped into the air pressure chamber 3 by the mechanical transmission action of the pumping mechanism 4, and the gas pressure in the air pressure chamber 3 is maintained in a dynamic balance state, so that the air pressure difference between the air pressure chamber 3 and the outside can prevent the movable frame 2 from rotating in the second direction; the above locking process does not need to additionally configure a motor, a servo device or other power source, but only needs to convert mechanical energy to achieve the instant locking of the movable frame 2 at any angle, which not only simplifies the structure of the assembly and reduces the manufacturing cost, but also avoids the problems of operation failure, energy consumption increase and the like caused by the additional setting of the power source. When the folding screen holding assembly 1000 is arranged at 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 driving the flexible display screen 2000 to rotate around the folding area, the movable frame 2 will be driven to rotate relative to the base 1 in the first direction and simultaneously drive the pumping mechanism 4, so that the air pressure chamber 3 maintains a dynamic air pressure balance, so that when the flexible display screen 2000 is rotated 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 achieving the instant and stable suspension of the flexible display screen 2000 at the angle position.

[0060] The technical solution of the embodiment breaks through the discrete angle limitation of the mechanical clamping mode relied on by the traditional hinge mechanism, so that the flexible display screen 2000 can adapt to multi-angle and multi-form display scene requirements, such as arbitrary pitch angle adjustment in a video conference, half-folded state retention in a reading mode, and the like, thereby improving the use flexibility and scene adaptability of the flexible display screen 2000, and further enhancing the reliability and long-term stability of the folding screen retaining assembly 1000 through a pure mechanical locking mechanism without an additional power source.

[0061] In an embodiment, referring to Figure 1 , the pumping mechanism 4 comprises a driving gear assembly 41 and a driven gear assembly 42; the driving 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 is engaged with the driving gear assembly 41 in the pump cavity 5; the air inlet of the pump cavity 5 is in communication with the outside, and the air outlet of the pump cavity 5 is in communication with the air pressure chamber 3.

[0062] In the embodiment, the driving gear assembly 41 can be composed of several meshing transmission members such as gears, gear rings, and gear racks, and the driven gear assembly 42 can also be composed of several meshing transmission members such as gears, gear rings, and gear racks. At least one meshing transmission member in the driving gear assembly 41 is connected with 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 member in the driven gear assembly 42 is engaged with at least one meshing transmission member in the driving gear assembly 41 in the pump cavity 5; wherein the pump cavity 5 is a gas-tight space arranged in the base 1 or a gas-tight space formed by the base 1 and the movable frame 2, the air inlet of the pump cavity 5 is in communication with the outside through a corresponding channel or pipeline, and the air outlet of the pump cavity 5 is in communication with the air pressure chamber 3 through a corresponding channel or pipeline.

[0063] A pair of meshing transmission members in the pump cavity 5 will be referred to as target meshing transmission members when the driving gear assembly 41 and the driven gear assembly 42 are engaged with each other, and the engagement region of the target meshing transmission members is referred to as a target engagement region; when the movable frame 2 drives the driving gear assembly 41 to rotate, on one side of the target engagement region, a pair of gear teeth on the target meshing transmission members gradually approach from a state of mutual separation and are engaged, so that the outside air entering the pump cavity 5 through the air inlet can be extruded into the engagement region, and the part of the air extruded into the engagement region will be stored in the gear groove; at the same time, on the other side of the target engagement region, a pair of gear teeth on the target meshing transmission members gradually separate from a state of mutual engagement, so that the air in the engagement region can be extruded outward, that is, the air stored in the gear groove is released to the air outlet, and then the part of the air extruded out is supplied into the air pressure chamber 3 from the air outlet.

[0064] It can be seen that, in the process of continuously rotating the driven gear assembly 42 by the driving gear assembly 41, based on the meshing and disengaging actions between the teeth, the external gas entering the pump cavity 5 through the air inlet can be continuously pushed into the meshing area and then continuously pushed to the air outlet on the other side of the pump cavity 5, so that the above-mentioned meshing transmission form can realize the continuous pumping of the gas from the outside to the gas pressure chamber 3.

[0065] The embodiment utilizes the precision of the gear meshing transmission mode to realize stable pumping of the gas at a preset rate, and the pumping rate of the gas can be highly synchronized with the rotating action of the movable frame 2, so as to ensure that the gas pumping amount dynamically matches the volume increase amount of the gas pressure chamber 3, and the gas pressure balance in the gas pressure chamber 3 can be stably maintained, providing continuous and reliable air pressure resistance for the locking of the movable frame 2 at any angle position. At the same time, based on the compactness of the gear meshing transmission structure, the light and thin design requirements of the flexible display screen 2000 can be better adapted.

[0066] In an embodiment, referring to Figure 1 , the pump cavity 5 includes a first cavity 51 and a second cavity 52 which are arranged in 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 is meshed with the first gear ring 411 in the first cavity 51, the first gear 421 is meshed with the second gear 422 in the second cavity 52, the first gear 421 rotates in the same direction as the first gear ring 411, and the second gear 422 rotates in the opposite direction of the first gear ring 411.

[0067] The air inlet of the first cavity 51 is in communication with the outside, the air outlet of the first cavity 51 is in communication with the air inlet of the second cavity 52, and the air outlet of the second cavity 52 is in communication with the gas pressure chamber 3.

[0068] In the embodiment, as Figure 1As shown, the base 1 and the movable frame 2 are both provided in a cylindrical structure, the movable frame 2 is rotatably arranged in the inner cavity of the base 1 around the central axis of the base 1, the first ring gear 411 is fixed to the inner side wall of the movable frame 2 through a corresponding connecting structure, when the movable frame 2 rotates in the first direction, the first ring gear 411 is driven 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 arranged in the inner cavity of the movable frame 2 and are rotatably connected to the base 1; the lower side of the first gear 421 is engaged with the lower side of the first ring gear 411, the meshing area between the first gear 421 and the first ring gear 411 divides the first cavity 51 into a first sub-cavity 511 on the left side and a second sub-cavity 512 on the right side, the first sub-cavity 511 is in communication with the air inlet; the upper side of the first gear 421 is engaged with the lower side of the second gear 422, the meshing area between the first gear 421 and the second gear 422 divides the second cavity 52 into a third sub-cavity 521 on the right side and a fourth sub-cavity 522 on the left side, the third sub-cavity 521 is in communication with the second sub-cavity 512, and the fourth sub-cavity 522 is in communication with the air outlet.

[0069] Based on the above arrangement, taking the first direction as the counterclockwise direction and the second direction as the clockwise direction as an example, when the movable frame 2 drives the first ring gear 411 to rotate in the counterclockwise direction, the first ring gear 411 drives the first gear 421 to rotate in the counterclockwise direction, and the first gear 421 drives the second gear 422 to rotate in the clockwise direction; in this process, based on the meshing and disengaging actions 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 between the first gear 421 and the first ring gear 411, and then flow to the third sub-cavity 521 from the second sub-cavity 512; the gas entering the third sub-cavity 521 can be pumped to the fourth sub-cavity 522 through the meshing area between the first gear 421 and the second gear 422, and then into the air pressure chamber 3 through the air outlet, thereby realizing the continuous pumping of the gas from the outside to the air pressure chamber 3 during the rotation of the movable frame 2.

[0070] In an embodiment, referring to Figure 1 , the pump cavity 5 further comprises a third cavity 53 and a fourth cavity 54 arranged in the base 1; the driven gear assembly 42 further comprises a third gear 423, the third gear 423 is engaged with the first ring gear 411 in the third cavity 53, the third gear 423 is engaged with the second gear 422 in the fourth cavity 54, and the third gear 423 rotates in the same direction as the first ring gear 411;

[0071] The air inlet of the third cavity 53 is in communication with the outside, the air outlet of the third cavity 53 is in communication with the air inlet of the fourth cavity 54, and the air outlet of the fourth cavity 54 is in communication with the air inlet of the second cavity 52.

[0072] In this embodiment, still taking Figure 1The third gear 423 is arranged in the inner cavity of the movable frame 2 and rotatably connected to the base 1. The upper side of the third gear 423 is engaged with the upper side of the first gear ring 411. The engagement area of the third gear 423 and the first gear ring 411 divides the third cavity 53 into a fifth sub-cavity 531 on the right and a sixth sub-cavity 532 on the left. The fifth sub-cavity 531 is in communication with the air inlet. The lower side of the third gear 423 is engaged with the upper side of the second gear 422. The engagement area of the third gear 423 and the second gear 422 divides the fourth cavity 54 into a seventh sub-cavity 541 on the left and an eighth sub-cavity 542 on the right. The seventh sub-cavity 541 is in communication with the sixth sub-cavity 532, and the eighth sub-cavity 542 is in communication with the third sub-cavity 521. It can be understood 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 arranged as different gas inlets.

[0073] Based on the above arrangement, taking the first direction as the counterclockwise direction and the second direction as the clockwise direction as an example, when the movable frame 2 drives the first gear ring 411 to rotate in the counterclockwise direction, the first gear ring 411 drives the first gear 421 and the third gear 423 to rotate in the counterclockwise direction, and the first gear 421 and the third gear 423 drive the second gear 422 to rotate in the clockwise direction. During this process, based on the engagement and disengagement actions between the corresponding 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 engagement area of the first gear 421 and the first gear ring 411, and then flow to the third sub-cavity 521 from the second sub-cavity 512. The gas entering the third sub-cavity 521 can be pumped to the fourth sub-cavity 522 through the engagement area of the first gear 421 and the second gear 422, and then into the air pressure chamber 3 through the air outlet. At the same time, the external gas entering the fifth sub-cavity 531 from the second air inlet can be pumped to the sixth sub-cavity 532 through the engagement area of the third gear 423 and the first gear ring 411, and then flow to the seventh sub-cavity 541 from the sixth sub-cavity 532. The gas entering the seventh sub-cavity 541 can be pumped to the eighth sub-cavity 542 through the engagement area of the third gear 423 and the second gear 422, and then flow to the third sub-cavity 521 from the eighth sub-cavity 542. The gas entering the third sub-cavity 521 can be pumped to the fourth sub-cavity 522 through the engagement area of the first gear 421 and the second gear 422, and then into the air pressure chamber 3 through the air outlet.

[0074] It can be seen that, based on the multi-tooth gear meshing structure in the embodiment, external gas can enter the pump cavity 5 through two different gas paths, and then the two gas paths are combined to supply the gas pressure chamber 3, so that the gas supply rate and total gas supply amount can be improved under the condition that the rotation angle and rotation rate of the movable frame 2 remain unchanged, the problem that the gas in the gas 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 gas pressure chamber 3 can be solved, the occurrence of air suction can be reduced, and the flexible display screen 2000 can better adapt to the application scenarios of rapid folding and unfolding by a large amplitude.

[0075] Preferably, a one-way valve can be arranged in the connection gas path between the gas inlet, the first cavity 51, the second cavity 52, the third cavity 53, the fourth cavity 54, and the gas outlet, so as to ensure that the gas always flows in a predetermined direction and avoid external leakage due to the gas flowing in the opposite direction.

[0076] In an embodiment, referring to Figure 1 , the folding screen retaining assembly 1000 further comprises a transmission shaft 6 connected to the movable frame 2, and the transmission shaft 6 is in clamping cooperation with the first ring gear 411; the movable frame 2 drives the first ring gear 411 to rotate synchronously through the transmission shaft 6.

[0077] Specifically, taking the base 1 and the movable frame 2 as examples arranged in a cylindrical structure as shown in the figure, the movable frame 2 is rotatably fitted in the inner cavity of the base 1, and the first ring gear 411 is coaxially arranged in the inner cavity of the movable frame 2; a plurality of barrier wall structures 4111 can be arranged at intervals on the outer side wall of the first ring gear 411, and the interval region between at least two barrier wall structures 4111 forms a connecting clamping groove; the middle part of the transmission shaft 6 is fixed to the movable frame 2, and the inward end of the transmission shaft 6 can be fitted into the connecting clamping groove of the first ring gear 411 through insertion, clamping or other methods; in this way, when the movable frame 2 rotates relative to the base 1, the first ring gear 411 can be driven to rotate synchronously through the transmission shaft 6, so that power transmission between the movable frame 2 and the first ring gear 411 is realized in a convenient manner; subsequently, the connection position between the transmission shaft 6 and the first ring gear 411 can be adjusted to adapt to different transmission requirements.

[0078] Preferably, as shown in Figure 1 , the number of transmission shafts 6 can be two, and the two transmission shafts 6 are correspondingly connected to different positions on the first ring gear 411 to enhance the connection stability and transmission accuracy between the movable frame 2 and the first ring gear 411.

[0079] In an embodiment, referring to Figure 1 , the base 1 protrudes a limiting portion 11; when the movable frame 2 rotates relative to the base 1 along the first direction to a critical position, the limiting portion 11 is used to abut against the transmission shaft 6 to prevent the movable frame 2 from continuing to rotate along the first direction.

[0080] Specifically, taking the case where the base 1 is provided in a cylindrical structure as shown in Figure 1 , the movable frame 2 is rotatably fitted in the inner cavity of the base 1, and the limiting portion 11 is a boss structure protruding from the inner side wall of the base 1; when the movable frame 2 is rotated relative to the base 1 along the first direction to the critical position, the limiting portion 11 can abut against the corresponding structure on the movable frame 2 to prevent the movable frame 2 from continuing to rotate along the first direction, thereby avoiding damage to the flexible display screen 2000 due to excessive rotation angle.

[0081] When the movable frame 2 is provided with a transmission shaft 6, as shown in Figure 1 , the limiting portion 11 can abut against the outward end of the transmission shaft 6 to prevent the movable frame 2 from continuing to rotate along the first direction.

[0082] In an embodiment, referring to Figure 1 , the folding screen holding assembly 1000 further comprises a pressure relief valve 8, which is provided on the base 1, one end of the pressure relief valve 8 is in communication with the gas pressure chamber 3, and the other end of the pressure relief valve 8 is in communication with the outside.

[0083] In actual application, when the flexible display screen 2000 needs to be reversed and reset (for example, 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 gas pressure chamber 3 for generating resistance to the outside through the pressure relief valve 8, and then the movable frame 2 can be driven to rotate relative to the base 1 along the second direction to the initial angle position, thereby conveniently realizing the reset operation of the flexible display screen 2000.

[0084] In an embodiment, referring to Figure 1 , the transmission shaft 6 is provided as a first magnet 61, and the base 1 is provided with a second magnet 7.

[0085] The second magnet 7 is used to magnetically attract the first magnet 61 to prevent the movable frame 2 from rotating relative to the base 1.

[0086] Specifically, in one embodiment, one of the first magnet 61 and the second magnet 7 can be provided as a magnetic member, and the other one of the first magnet 61 and the second magnet 7 can be provided as a metal member that can be magnetically attracted; in another embodiment, the first magnet 61 and the second magnet 7 can be provided as magnetic members with opposite magnetic poles.

[0087] In actual application, taking the case where the base 1 is provided in a cylindrical structure as shown in Figure 1As shown in the cylindrical structure, the movable frame 2 is rotatably fitted in the inner cavity of the base 1, the second magnet 7 is arranged on the inner side wall of the base 1, and the position of the second magnet 7 corresponds to the initial angular position of the movable frame 2. During the resetting process of the flexible display screen 2000, when the pressure relief valve 8 is opened, the movable frame 2 can be driven to rotate relative to the base 1 in the second direction; when the first magnet 61 rotates to the adsorption range of the second magnet 7, based on the magnetic adsorption action between the first magnet 61 and the second magnet 7, the first magnet 61 can be adsorbed and quickly moved to the position opposite to the second magnet 7, so as to quickly rotate the movable frame 2 to the preset initial angular position, and realize the fast and accurate resetting of the flexible display screen 2000.

[0088] The application also provides a display device, please refer to Figures 1 to 4 The display device comprises a flexible display screen 2000 and at least two folding screen holding assemblies 1000 according to any one of the above embodiments;

[0089] The at least two folding screen holding assemblies 1000 are arranged in sequence from front to back, the movable frame 2 of each folding screen holding assembly 1000 is connected with the base 1 of the other folding screen holding assembly 1000 adjacent to the rear side; the flexible display screen 2000 is laid on the at least two folding screen holding assemblies 1000, and the flexible display screen 2000 is connected with the base 1 of the at least two folding screen holding assemblies 1000.

[0090] In the embodiment, the display device can comprise a foldable terminal device with display function such as a mobile phone and a tablet computer. The flexible display screen 2000 is the core display component of the display device, which together with the folding screen holding assembly 1000 constitutes the main body of the display device. The flexible display screen 2000 can comprise a plurality of functional film layers arranged in layers and having flexible folding function, such as a display layer, an element layer and a structure layer for separation, etc. Figure 4 As shown, the flexible display screen 2000 can comprise an OLED display layer 2100 and a flexible adapter layer 2200, the OLED display layer 2100 is at the outermost side and is used for displaying images and pictures, the flexible adapter layer 2200 is arranged between the OLED display layer 2100 and the holding assembly layer 10000 composed of a plurality of folding screen holding assemblies 1000, the flexible adapter layer 2200 can adapt to the folding action of the OLED display layer 2100 and the rotating action of the folding screen holding assembly 1000 based on the elastic deformation characteristics of the flexible adapter layer 2200, and can form a blocking action between the OLED display layer 2100 and the holding assembly layer 10000, so as to avoid the direct contact between the folding screen holding assembly 1000 and the OLED display layer 2100 and cause damage to the OLED display layer 2100.

[0091] 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.

[0092] 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. 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.

[0093] Based on the above connection mode of the plurality of folding screen holding assemblies 1000, starting from the second folding screen holding assembly 1000 from the left, each folding screen holding assembly 1000 can rotate relative to the left adjacent folding screen holding assembly 1000 in response to the rotating action 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 assembly 1000 from the left is located, the seventh folding screen holding assembly 1000 from the left and the eighth folding screen holding assembly 1000 from the left can be simultaneously driven to rotate counterclockwise relative to the sixth folding screen holding assembly 1000 from the left, and after the flexible display screen 2000 rotates to the target angle, the flexible display screen 2000 can be suspended at the current target angle position through the air pressure locking action between the movable frame 2 and the base 1 in the sixth folding screen holding assembly 1000 from the left. Similarly, when the flexible display screen 2000 rotates counterclockwise around the folding area where the fourth folding screen holding assembly 1000 from the left is located, the fifth folding screen holding assembly 1000 from the left, the sixth folding screen holding assembly 1000 from the left, the seventh folding screen holding assembly 1000 from the left, and the eighth folding screen holding assembly 1000 from the left can be simultaneously driven to rotate counterclockwise relative to the fourth folding screen holding assembly 1000 from the left, and after the flexible display screen 2000 rotates to the target angle, the flexible display screen 2000 can be suspended at the current target angle position through the air pressure locking action between the movable frame 2 and the base 1 in the fourth folding screen holding assembly 1000 from the left. The rotating and locking operations of the flexible display screen 2000 around other folding areas are the same, which will not be described here.

[0094] It can be seen that the flexible display screen 2000 in the embodiment is provided with a plurality of folding areas, and each folding area is provided with an independent folding screen holding assembly 1000. The air pressure locking actions of the folding screen holding assemblies 1000 do not interfere with each other, so that the user can drive the flexible display screen 2000 to rotate around different folding areas to different angles and be stably kept, so as to make the flexible display screen 2000 present different folding and unfolding states. For example, the flexible display screen 2000 can be completely unfolded or folded into a Z-shaped type, a stepped type, an arc-shaped type, etc., so as to better adapt to the display requirements of different application scenarios, thereby significantly improving the operation flexibility and applicability of the display device.

[0095] It should be noted that the above specific embodiments are only used to describe the operation process, and in actual application, the number of folding screen holding assemblies 1000 is not limited to 8, and can be set according to the folding requirements of the flexible display screen 2000, which is not limited here.

[0096] In an embodiment, with reference to Figure 5 and Figure 6, the flexible display screen 2000 comprises a first display screen body 2300 and a second display screen body 2400, the first display screen body 2300 is superimposed on the second display screen body 2400; at least two folding screen holding assemblies 1000 are inlaid between the first display screen body 2300 and the second display screen body 2400, the first display screen body 2300 is connected with the base 1 of the at least two folding screen holding assemblies 1000, and the second display screen body 2400 is connected with the base 1 of the at least two folding screen holding assemblies 1000.

[0097] In the embodiment, as shown in Figure 5 and Figure 6 , the first display screen body 2300 is laid on the upper side of the plurality of folding screen holding assemblies 1000, the second display screen body 2400 is laid on the lower side of the plurality of folding screen holding assemblies 1000, and the first display screen body 2300 and the second display screen body 2400 are connected with the base 1 of each folding screen holding assembly 1000. Based on the setting, when the user performs the folding or unfolding operation on the flexible display screen 2000, the first display screen body 2300 and the second display screen body 2400 can be stably kept at the current angle position through the air pressure locking action of the folding screen holding assembly 1000.

[0098] The embodiment can realize the double-sided display function of the display device by setting the flexible display screen 2000 as the first display screen body 2300 and the second display screen body 2400 distributed on the upper and lower sides of the folding screen holding assembly 1000, on the one hand, and can completely cover the folding screen holding assembly 1000 by the first display screen body 2300 and the second display screen body 2400, so as to form a certain shielding protection effect on the folding screen holding assembly 1000 and improve the appearance of the overall structure of the display device.

[0099] The above only describes the exemplary embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A folding screen holding assembly, characterized by, The folding screen holding assembly comprises: a base for connecting a flexible display screen; a movable frame rotatably connected to the base, a gas pressure chamber being arranged between the movable frame and the base, the volume of the gas pressure chamber gradually increasing during rotation of the movable frame relative to the base in a first direction; a pumping mechanism arranged on the movable frame, an air inlet of the pumping mechanism being in communication with the outside, an air outlet of the pumping mechanism being in communication with the gas pressure chamber, the pumping mechanism being used to convert rotation of the movable frame in the first direction into a gas pumping action to pump outside air into the gas pressure chamber, thereby preventing rotation of the movable frame relative to the base in a second direction by the gas pressure of the gas pressure chamber, the second direction being opposite to the first direction; the pumping mechanism comprises a driving gear assembly and a driven gear assembly, the driving gear assembly being rotatable synchronously with the movable frame, the driven gear assembly being rotatably connected to the base, the driven gear assembly being engaged with the driving gear assembly in a pump cavity, an air inlet of the pump cavity being in communication with the outside, an air outlet of the pump cavity being in communication with the gas pressure chamber; the pump cavity comprises a first cavity and a second cavity arranged in the base, the driving gear assembly comprises a first gear ring, the driven gear assembly comprises a first gear and a second gear, the first gear being engaged with the first gear ring in the first cavity, the first gear being engaged with the second gear in the second cavity, the first gear rotating in the same direction as the first gear ring, the second gear rotating in the opposite direction to the first gear ring, the air inlet of the first cavity being in communication with the outside, the air outlet of the first cavity being in communication with the air inlet of the second cavity, the air outlet of the second cavity being in communication with the gas pressure chamber.

2. The foldable screen holding assembly of claim 1, wherein, the pump cavity further comprises a third cavity and a fourth cavity arranged in the base, the driven gear assembly further comprises a third gear, the third gear being engaged with the first gear ring in the third cavity, the third gear being engaged with the second gear in the fourth cavity, the third gear rotating in the same direction as the first gear ring; the air inlet of the third cavity is in communication with the outside, the air outlet of the third cavity is in communication with the air inlet of the fourth cavity, the air outlet of the fourth cavity is in communication with the air inlet of the second cavity.

3. The foldable screen holding assembly of claim 1, wherein, the folding screen holding assembly further comprises a transmission shaft connected to the movable frame, the transmission shaft being in snap-fit engagement with the first gear ring, the movable frame driving the first gear ring to rotate synchronously through the transmission shaft.

4. The fold screen holding assembly according to claim 3, wherein the transmission shaft is provided as a first magnet, the base is provided with a second magnet; the second magnet is used to magnetically attract the first magnet to prevent rotation of the movable frame relative to the base.

5. The fold screen holding assembly according to claim 3, wherein the base is provided with a limiting portion, when the movable frame rotates relative to the base in the first direction to a critical position, the limiting portion is used to abut against the transmission shaft to prevent the movable frame from continuing to rotate in the first direction.

6. The foldable screen holding assembly according to any one of claims 1 to 5, characterized in that, The folding screen holding assembly further comprises a pressure relief valve arranged on the base, one end of the pressure relief valve being in communication with the air pressure chamber, and the other end of the pressure relief valve being in communication with the outside.

7. A display device, characterized by comprising: The display device comprises a flexible display screen and at least two folding screen holding assemblies as claimed in any one of claims 1 to 6. The at least two folding screen holding assemblies are arranged in sequence from front to back, and the movable frame of each folding screen holding assembly is connected to the base of another folding screen holding assembly adjacent to the rear side. The flexible display screen is laid on the at least two folding screen holding assemblies, and the flexible display screen is connected to the base of the at least two folding screen holding assemblies.

8. The display device according to claim 7, wherein The flexible display screen comprises a first display screen body and a second display screen body, the first display screen body being superimposed on the second display screen body; at least two folding screen holding assemblies are inlaid 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 assemblies, and the second display screen body being connected to the base of the at least two folding screen holding assemblies.

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