Anti-pinch dustproof flip-up electric ground curtain and control system thereof

Abstract

The present application relates to the technical fields of projection screen and motorized screen, and discloses an anti-pinch and dustproof flip type motorized ground screen and a control system thereof, which comprises a shell, a curtain mechanism, a full-wrapping flip assembly, a flip anti-pinch driving assembly and a side anti-pinch assembly. An upper opening is formed on the shell for the curtain mechanism to pass through. The full-wrapping flip assembly is arranged at the upper opening and has a flip that can rotate relative to the shell. The flip covers the upper opening in a closed position to form a dustproof shielding structure. The flip anti-pinch driving assembly has a flip motor, a flip driving shaft and a flip connecting rod. The flip motor drives the flip to open or close through the flip driving shaft and the flip connecting rod. The curtain mechanism has a curtain lifting motor, a lifting transmission shaft, a curtain lifting support guiding mechanism, a curtain and a curtain cover. The curtain lifting motor drives the curtain to be unfolded or retracted through the lifting transmission shaft, and the curtain lifting support guiding mechanism guides and supports the curtain cover to lift.

Description

Technical Field

[0001] This invention relates to the field of projection screen and electric screen technology, and in particular to an anti-pinch and dustproof flip-top electric floor-lifting screen and its control system. Background Technology

[0002] Electric floor-lifting screens are typically installed on the ground, in cabinets, or in mounting slots. When in use, the screen is raised and unfolded from the outer casing by a motor. After use, the screen is retracted into the outer casing. To allow the screen and its cover to pass through, existing electric floor-lifting screens usually have a long, narrow opening at the top of the casing. Some products rely directly on the screen cover to close with the casing, while others have a small flap or partial flap structure at the top opening.

[0003] In the prior art, Chinese utility model patent CN216310518U discloses a telescopic support adjustment mechanism and a floor-standing screen. It adjusts the telescopic support through structures such as fixed blocks, sliding blocks, connecting rods and adjusting components to improve the flatness of the screen and the stability of use. However, the main improvement direction of this type of solution is focused on screen support and lifting adjustment, and does not address the contradiction between full-width dust protection of the opening on the outer shell and anti-pinch when the flip cover is closed. When the flip cover only covers part of the upper surface, there are still gaps on the upper surface of the product, and dust can easily enter the interior of the outer shell. The overall appearance is also not complete. When the flip cover increases the coverage area to improve the dust protection effect, the flip cover is prone to clamping interference with the top cover of the screen, the user's hand or animal limbs during the closing process. Especially on the side of the flip cover and near the pivot point of the flip cover, shearing and clamping areas will also be formed. Therefore, existing electric floor-standing screens have the problem of not being able to achieve both full-width dust protection and safe closure. Summary of the Invention

[0004] In view of this, the purpose of this invention is to propose an anti-pinch and dustproof flip-top electric floor lift curtain and its control system, so as to solve the problem that when existing electric floor lift curtains expand the flip-top coverage area to achieve dust prevention, the flip-top closing is prone to interference with the curtain retraction action, and a pinching risk is formed at the end of the flip-top closing and in the side rotation area.

[0005] To achieve the above objectives, the present invention provides an anti-pinch and dustproof flip-top electric floor-lifting screen, comprising a housing, a screen mechanism disposed within the housing, an upper opening formed on the housing for the screen mechanism to pass through during lifting and lowering, a fully enclosed flip-top assembly disposed at the upper opening of the housing for covering the upper opening after the screen mechanism is retracted, the fully enclosed flip-top assembly having a flip-top that can rotate relative to the housing; a flip-top anti-pinch drive assembly disposed within the housing and kinetically connected to the flip-top for driving the flip-top to open or close, the flip-top anti-pinch drive assembly having a flip-top motor, a flip-top drive shaft, and a flip-top connecting rod, the flip-top motor driving the flip-top connecting rod to move via the flip-top drive shaft, the flip-top connecting rod driving the flip-top to open or close; and a side anti-pinch assembly disposed on the side of the housing for preventing foreign objects from entering the clamping area of ​​the flip-top side.

[0006] Preferably, the flap in the fully enclosed flap assembly extends along the length of the outer shell, and the flap, in the closed position, covers the upper opening and the open area above the storage cavity located below the upper opening, so that the upper surface of the outer shell forms an integrated covering structure.

[0007] Furthermore, the closed edge of the flip cover can be provided with an overlapping edge, a soft sealing strip, or a labyrinth-style shielding edge extending downward or inward. The overlapping edge, soft sealing strip, or labyrinth-style shielding edge cooperates with the periphery of the opening on the outer shell, so that dust must go through a bending path before entering the storage cavity, thereby forming full-width dust protection without adding an independent dust cover.

[0008] Preferably, the flip-cover drive shaft is located at the output end of the flip-cover motor, one end of the flip-cover connecting rod is connected to the flip-cover drive shaft, and the other end of the flip-cover connecting rod is connected to the flip cover, so that the output torque of the flip-cover motor is transmitted to the flip cover through the flip-cover drive shaft and the flip-cover connecting rod.

[0009] Preferably, the flip cover motor in the flip cover anti-pinch drive assembly is a brakeless motor or a force-releasing motor. The flip cover motor allows the flip cover to rotate relative to the outer shell under the action of external force when it is in working or stopped state. The flip cover motor is configured to stop driving after the flip cover is closed to a preset force-releasing position, so that the flip cover moves to the closed position by its own gravity.

[0010] Furthermore, the release mechanism of the brakeless motor or the release motor can be achieved through a non-self-locking reduction transmission, a friction clutch, a torque limiter, a flexible coupling, or a reverse-dragging transmission mechanism; when the flip cover is subjected to an external force exceeding a preset release threshold, the flip cover can rotate relative to the outer shell or cause the transmission chain to slip and release force, so as to avoid the flip cover forming a rigid clamp at the end of the closing section.

[0011] Preferably, the side anti-pinch assembly includes an anti-angle plate, which is fixed to the side of the housing and close to the movement area of ​​the flip cover, and the anti-angle plate has a side blocking portion located at the lateral gap between the flip cover and the housing.

[0012] Furthermore, the side shielding portion covers or extends into the shearing and clamping area between the side edge of the flip cover and the side wall of the outer shell, and can be configured as a bending plate, an arc-shaped baffle, or a baffle with a guide slope, so that foreign objects are blocked or discharged when they approach the shearing and clamping area.

[0013] Preferably, the curtain mechanism includes a curtain, a curtain cover, a curtain lifting motor, a lifting transmission shaft, and a curtain lifting support and guide mechanism. The upper end of the curtain is connected to the curtain cover. The curtain lifting support and guide mechanism includes an upper support rod, a hinge, and a lower support rod. The upper support rod and the lower support rod are rotatably connected by the hinge. The upper support rod is connected to the bottom of the curtain cover, and the lower support rod is connected to the outer shell. The curtain lifting motor drives the curtain to unfold or retract through the lifting transmission shaft, and causes the curtain lifting support and guide mechanism to unfold or fold, thereby driving the curtain cover to rise or fall.

[0014] This invention also provides a control system for an anti-pinch and dustproof flip-top electric floor-lifting screen, applied to the aforementioned anti-pinch and dustproof flip-top electric floor-lifting screen. The system includes a controller electrically connected to a flip-top motor and a screen lifting motor. The controller integrates or connects to a flip-top drive control unit, a screen drive control unit, a position limit unit, and a safety judgment unit. The flip-top drive control unit is connected to the flip-top motor and controls the opening or closing of the flip-top. The screen drive control unit is connected to the screen lifting motor and controls the raising or retraction of the screen. The position limit unit is connected to the controller and detects the operating positions of the flip-top and the screen. The safety judgment unit is connected to the controller and allows the next action to be executed after the flip-top and the screen meet a preset positional relationship.

[0015] Preferably, the position limiting unit includes a Hall counting module and a limit switch. The Hall counting module is used to collect and accumulate Hall pulses from the flip-up motor and the curtain lifting motor. The limit switch is set on the retraction path of the curtain cover and outputs a position signal to the controller when the curtain cover reaches the retraction position.

[0016] Preferably, the controller is configured to, upon receiving an opening command, first control the flip-up motor to rotate forward via PWM, causing the flip-up motor to open the flip-up cover via the flip-up drive shaft and the flip-up connecting rod; when the Hall effect count of the flip-up motor reaches a preset opening position, the controller stops the flip-up motor, and after a preset delay, controls the curtain lifting motor to rotate forward via PWM, causing the curtain lifting motor to unfold the curtain via the lifting transmission shaft, and simultaneously causing the curtain lifting support guide mechanism to unfold and support the curtain cover to rise; when the Hall effect count of the curtain lifting motor reaches a preset unfolding position, the controller stops the curtain lifting motor.

[0017] Preferably, the controller is further configured to, upon receiving a closing command, first confirm that the flip cover is in the safe open position; if the flip cover is not in the safe open position, first control the flip cover motor to drive the flip cover to the safe open position, and then control the curtain lifting motor to retract the curtain; when the limit switch outputs a retraction signal or the Hall count of the curtain lifting motor reaches a preset retraction position, control the flip cover motor to drive the flip cover to move in the closing direction; when the flip cover moves to a preset release position, stop the flip cover motor output, allowing the flip cover to complete the remaining closing stroke by its own gravity.

[0018] Preferably, the control system further includes an obstruction detection module, a power-off memory module, a status indication module, and an operation switch. The obstruction detection module is used to detect the operating current, operating speed, and operating time of the flip-up motor and the curtain lifting motor. The power-off memory module is used to store the operating position, Hall effect count value, limit parameters, and PWM duty cycle parameters of the flip-up motor and the curtain. The status indication module includes a hidden light strip and a buzzer. The hidden light strip is used to indicate the operating status or abnormal status. The operation switch is used to input an open command or a close command to the controller.

[0019] The beneficial effects of this invention are: This anti-pinch and dustproof flip-top electric floor-lifting screen and its control system, by setting a fully enclosed flip-top component at the upper opening of the outer shell, allows the flip-top to cover the upper opening and the area above the storage cavity after the screen mechanism is retracted, forming an integrated shielding structure. This reduces the probability of dust entering the inner shell while reducing the gaps on the upper surface of the product, and improves the overall appearance of the product when it is not in use.

[0020] Based on the large coverage area formed by the aforementioned fully enclosed flip cover assembly, the flip cover is closed to the preset release position by the flip cover anti-pinch drive assembly, and then the flip cover motor stops driving. The flip cover relies on its own gravity to complete the final closing. The flip cover can give way when subjected to external force by a brakeless motor or a release motor. In addition, the anti-pinch plate blocks the clamping area on the side of the flip cover, so that the dustproof advantage of the full-width flip cover will not be transformed into a rigid clamping risk.

[0021] Therefore, this design is not simply about adding an electric flip cover or setting up a separate baffle, but rather about creating a combined constraint relationship between the fully enclosed dustproof flip cover, the force release at the end of the closure, the side shearing area shielding, and the curtain / flip cover sequence interlocking. This creates a synergistic anti-pinch effect to address the specific safety risks of the fully enclosed large flip cover in a floor-mounted screen.

[0022] Under the premise of achieving the above-mentioned dust prevention and anti-pinch unity, the flip cover drive control unit, curtain drive control unit, position limit unit and safety judgment unit in the control system ensure that the flip cover opens first and then the curtain rises, and the curtain retracts into place first and then the flip cover closes. Combined with obstruction detection, power failure memory and status prompts, the safety relationship between the flip cover, the curtain and the user is continuously maintained in the control logic, thereby improving the overall reliability of the machine. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in this invention 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 for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of the invention in its closed state; Figure 2 This is a schematic diagram of the overall structure of the present invention in its open state; Figure 3 This is a schematic diagram of the anti-pinch drive assembly structure of the flip cover of the present invention; Figure 4 This is a schematic diagram of the force release state at the final closing stage of the flip cover anti-pinch drive assembly of the present invention; Figure 5 This is a schematic diagram showing the installation position of the side anti-pinch component of the present invention; Figure 6 This is a schematic diagram of the cooperation structure between the curtain mechanism and the limit switch of the present invention; Figure 7 This is a block diagram of the control system structure of the present invention; Figure 8 This is a schematic diagram of the opening, closing, and obstruction protection control process of the present invention; Figure 9This is a schematic diagram of the motor cooperative control process during the start-up process of the present invention; Figure 10 This is a schematic diagram of the motor coordinated control process during the shutdown process of the present invention.

[0025] The diagram is marked as follows: 1. Outer shell; 2. Top opening; 3. Flip cover; 4. Storage cavity; 5. Flip cover drive shaft; 6. Flip cover motor; 7. Flip cover connecting rod; 8. Lifting transmission shaft; 9. Upper support rod; 10. Hinge; 11. Lower support rod; 12. Limit stop; 13. Anti-angle plate; 14. Side shielding part; 15. Curtain; 16. Curtain top cover; 17. Curtain lifting motor; 18. Controller; 19. Limit switch; 20. Obstruction detection module; 21. Power-off memory module; 22. Status indication module; 23. Hidden light strip; 24. Operation switch; 25. Communication interface. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0027] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0028] like Figures 1 to 10As shown, an anti-pinch and dustproof flip-top electric floor-lifting screen includes a housing 1 and a screen mechanism disposed within the housing 1. The housing 1 has an upper opening 2 for the screen mechanism to pass through during lifting and lowering. A fully enclosed flip-top assembly is disposed at the upper opening 2 of the housing 1 and is used to cover the upper opening 2 after the screen mechanism is retracted. The fully enclosed flip-top assembly has a flip-top 3 that can rotate relative to the housing 1. An anti-pinch drive assembly is disposed within the housing 1 and is connected to the flip-top 3 for driving the flip-top 3 to open or close. The anti-pinch drive assembly has a flip-top motor 6, a flip-top drive shaft 5, and a flip-top connecting rod 7. The flip-top motor 6 drives the flip-top connecting rod 7 to move through the flip-top drive shaft 5, and the flip-top connecting rod 7 drives the flip-top 3 to open or close. A side anti-pinch assembly is disposed on the side of the housing 1 to prevent foreign objects from entering the clamping area on the side of the flip-top 3.

[0029] The outer shell 1 can be formed using aluminum profiles, sheet metal parts, or a combination of aluminum profiles and sheet metal parts. The outer shell 1 has an overall elongated structure. Inside the outer shell 1, there is a storage cavity 4 for accommodating the curtain mechanism, the flip-top anti-pinch drive assembly, and the controller 18. The upper opening 2 extends along the length of the outer shell 1 and is located above the storage cavity 4. The curtain mechanism can rise upwards or retract downwards into the storage cavity 4 through the upper opening 2. The flip-top 3 is located at the upper opening 2 and can rotate between the open and closed positions. In the closed position, the flip-top 3 covers the upper opening 2, creating a shield between the storage cavity 4 and the external environment. Since the flip-top 3 in this embodiment does not only cover a partial area of ​​the upper surface of the product, but rather serves as a fully enclosed flip-top assembly covering the main open area of ​​the upper opening 2, the product is not... When in use, the top of the outer shell 1 forms a continuous shielding surface, making it difficult for dust to directly enter the storage cavity 4 from the top opening 2. The risk of clamping that may arise from the increased coverage area of ​​the flip cover 3 is jointly solved by the flip cover anti-pinch drive component, the side anti-pinch component, and the sequential interlocking relationship formed by the position limiting unit. That is, the flip cover 3 is not rigidly driven to complete closure by the flip cover motor 6, but stops driving at the end of the closure and relies on its own weight to complete the closure. At the same time, the side anti-pinch component prevents foreign objects from entering the side clamping area of ​​the flip cover 3. The controller 18 ensures that the flip cover 3 closes only after the curtain mechanism is retracted into place based on the position limiting unit. Thus, the fully enclosed dustproof structure, the low-drive anti-pinch closure structure, and the sequential interlocking action of the curtain and the flip cover form a continuous cooperation relationship in the same technical solution.

[0030] In this embodiment, the fully enclosed flip cover assembly refers to the flip cover 3 covering the entire length of the opening 2 in the length direction and at least covering the opening 2 and its adjacent edge area in the width direction, so that the shell 1 is no longer formed by multiple separate small cover plates when not in use, thereby reducing splicing gaps and dust accumulation channels.

[0031] To further improve the dustproof effect, the free edge, two sides or the edge adjacent to the outer shell 1 of the flip cover 3 can be provided with overlapping edge, sealing strip, flexible dustproof strip or labyrinth shielding edge. The overlapping edge, sealing strip, flexible dustproof strip or labyrinth shielding edge forms an overlapping, abutting or misaligned shielding relationship with the periphery of the upper opening 2 of the outer shell 1, making it difficult for dust to enter the storage cavity 4 along a straight path.

[0032] like Figures 2 to 5 As shown, the flip cover 3 in the fully enclosed flip-cover assembly extends along the length of the outer shell 1. When closed, the flip cover 3 covers the upper opening 2 and the open area above the storage cavity 4, forming an integrated covering structure on the upper surface of the outer shell 1. The flip-cover drive shaft 5 is located at the output end of the flip-cover motor 6. One end of the flip-cover connecting rod 7 is connected to the flip-cover drive shaft 5, and the other end is connected to the flip cover 3, allowing the output torque of the flip-cover motor 6 to be transmitted to the flip cover 3 via the flip-cover drive shaft 5 and the flip-cover connecting rod 7. The flip-cover motor in the flip-cover anti-pinch drive assembly... The motor 6 is a brakeless motor or a force-releasing motor. The flip cover motor 6 allows the flip cover 3 to rotate relative to the outer shell 1 under the action of external force when it is in working or stopped state. The flip cover motor 6 is configured to stop driving after the flip cover 3 is closed to a preset force-releasing position, so that the flip cover 3 moves to the closed position by its own weight. The side anti-pinch assembly includes an anti-pinch plate 13. The anti-pinch plate 13 is fixed to the side of the outer shell 1 and close to the movement area of ​​the flip cover 3. The anti-pinch plate 13 has a side blocking part 14 located at the lateral gap between the flip cover 3 and the outer shell 1.

[0033] The flip cover 3 can be made of aluminum alloy profile, bent aluminum plate, or lightweight composite board. The length of the flip cover 3 is adapted to the length of the outer shell 1. The width of the flip cover 3 is preferably sufficient to cover the upper opening 2 and to shield the upper open area of ​​the storage cavity 4 when closed. The flip cover motor 6 is located at the end of the outer shell 1 or inside the storage cavity 4. The output end of the flip cover motor 6 is connected to the flip cover drive shaft 5. The flip cover drive shaft 5 is connected to the flip cover connecting rod 7. The flip cover connecting rod 7 is then connected to the flip cover 3 or the connecting seat on the flip cover 3, thereby converting the rotational motion of the flip cover motor 6 into the opening and closing motion of the flip cover 3. The flip cover motor 6 is preferably a brakeless motor, that is, in the working or stopped state, the flip cover 3 can be easily opened and closed under the action of external force. The push and rotate mechanism makes it difficult for fingers or foreign objects that accidentally enter the movement range of the flip cover 3 to be rigidly locked. Furthermore, the controller 18 can stop the output of the flip cover motor 6 when the flip cover 3 is about 15 to 30 degrees away from the fully closed position, preferably about 20 degrees. After that, the flip cover 3 rotates to the closed position by its own weight, so that the driving force of the final closing section is changed from the forced drive of the motor to the combination of gravity falling and the self-weight of the structure, and the clamping force is significantly reduced. The anti-pinch plate 13 is fixed to the side of the outer shell 1. The side shielding part 14 can be an angled bending plate, an arc baffle or an engineering plastic baffle. Its position covers the lateral gap between the side of the flip cover 3 and the outer shell 1, which is used to reduce the risk of foreign objects entering the side clamping area of ​​the flip cover 3.

[0034] To ensure that the flip cover 3 can be repositioned by external forces whether in the working or stopped state, a force-relieving transmission structure can be provided between the flip cover motor 6 and the flip cover drive shaft 5, between the flip cover drive shaft 5 and the flip cover connecting rod 7, or between the flip cover connecting rod 7 and the flip cover 3. This force-relieving transmission structure includes one or more of the following: a non-self-locking gear transmission mechanism, a friction clutch, a torque limiter, a magnetic clutch, and a flexible coupling. When the free end of the flip cover 3 is subjected to an external force greater than a preset force-relieving threshold, the force-relieving transmission structure allows the transmission chain to reverse, slip, or elastically reposition, thereby preventing the flip cover 3 from continuously pressing against foreign objects with the motor's locking force.

[0035] The preset release position can be determined by the Hall count of the flip cover motor 6, the angle sensor, the time count, or the reset position calibration of the limit stop 12. For example, when the flip cover 3 moves from the open position to the closed position, the controller 18 accumulates the Hall count in reverse according to the maximum open position. When the flip cover 3 is about 15 to 30 degrees away from the fully closed position, preferably about 20 degrees, the controller 18 stops the output of the flip cover motor 6, so that the flip cover 3 completes the final closing with its own weight or a closing force lower than the preset clamping force.

[0036] The anti-pinch plate 13 is preferably located in the area near the side of the flip cover 3, the flip cover drive shaft 5, or the flip cover rotation fulcrum. Its side shielding part 14 covers the shearing and clamping entrance between the flip cover 3 and the outer shell 1, and can form an outward or upward guide slope so that fingers, pet limbs or other foreign objects are blocked outside the shearing and clamping area when they come into contact with the side shielding part 14.

[0037] like Figure 2 , Figure 3 and Figure 6 As shown, the curtain mechanism includes a curtain 15, a curtain cover 16, a curtain lifting motor 17, a lifting transmission shaft 8, and a curtain lifting support guide mechanism. The upper end of the curtain 15 is connected to the curtain cover 16. The curtain lifting support guide mechanism includes an upper support rod 9, a hinge 10, and a lower support rod 11. The upper support rod 9 and the lower support rod 11 are rotatably connected by the hinge 10. The upper support rod 9 is connected to the bottom of the curtain cover 16, and the lower support rod 11 is connected to the outer shell 1. The curtain lifting motor 17 drives the curtain 15 to unfold or retract through the lifting transmission shaft 8, and causes the curtain lifting support guide mechanism to unfold or fold, thereby driving the curtain cover 16 to rise or fall.

[0038] The curtain lifting motor 17 is housed inside the outer casing 1. The lifting drive shaft 8 is arranged along the length of the outer casing 1. The curtain lifting motor 17 is connected to the lifting drive shaft 8. The curtain 15 can be displayed or retracted under the drive of the lifting drive shaft 8. The upper end of the curtain 15 is fixed to the curtain cover 16. The upper end of the upper support rod 9 is connected to the bottom of the curtain cover 16, and the lower end of the lower support rod 11 is connected to the support base inside the outer casing 1. The upper support rod 9 and the lower support rod 11 form a foldable guide support structure through the hinge 10. When the curtain 15 is displayed, the curtain lifting motor 17 drives the lifting transmission shaft 8 to rotate, and the curtain 15 is displayed outward. At the same time, the upper support rod 9 and the lower support rod 11 unfold around the hinge 10, so that the curtain cover 16 rises upward under the guidance and support of the support rod, thus making the curtain 15 appear to be in an upward unfolded state. When the curtain 15 is retracted, the curtain lifting motor 17 rotates in the opposite direction, and the curtain 15 is retracted into the outer shell 1. At the same time, the upper support rod 9 and the lower support rod 11 fold around the hinge 10, so that the curtain cover 16 descends and is retracted into the vicinity of the upper opening 2 or into the storage cavity 4.

[0039] like Figure 1 , Figure 2 , Figures 6 to 10 As shown, a control system for an anti-pinch and dustproof flip-top electric floor-lifting screen includes a controller 18. The controller 18 is electrically connected to a flip-top motor 6 and a screen lifting motor 17. The controller 18 integrates or connects to a flip-top drive control unit, a screen drive control unit, a position limit unit, and a safety judgment unit. The flip-top drive control unit is connected to the flip-top motor 6 and is used to control the flip-top 3 to open or close. The screen drive control unit is connected to the screen lifting motor 17 and is used to control the screen 15 to rise or retract. The position limit unit is connected to the controller 18 and is used to detect the operating positions of the flip-top 3 and the screen 15. The safety judgment unit is connected to the controller 18 and is used to allow the next action to be executed after the flip-top 3 and the screen 15 meet the preset position relationship. The position limit unit includes a Hall counting module and a limit switch 19. The Hall counting module is used to collect and accumulate the Hall pulses of the flip-top motor 6 and the screen lifting motor 17. The limit switch 19 is set on the retraction path of the screen cover 16 and outputs a position signal to the controller 18 when the screen cover 16 reaches the retraction position.

[0040] Controller 18 can be a microcontroller, an integrated control board, or a control module with motor drive control function. The flip-cover drive control unit, curtain drive control unit, position limit unit, and safety judgment unit can be implemented by the control circuit, input / output ports, and control program inside controller 18. Figure 7The controller is referred to as Controller 18. The flip-up drive control unit and the curtain drive control unit can also adopt H-bridge motor drive circuit or other forward and reverse motor drive circuits. Controller 18 adjusts the running direction, running speed and output torque of flip-up motor 6 and curtain lifting motor 17 through PWM signal. Hall count module counts the number of running revolutions of flip-up motor 6 and curtain lifting motor 17 by collecting motor Hall pulses. Limit switch 19 is preferably set at the position where the curtain cover 16 descends into the storage cavity 4. When the curtain cover 16 triggers the limit switch 19, it means that the curtain 15 has been retracted to a position that does not interfere with the closing of flip-up 3. The safety judgment unit can be implemented by the program logic in controller 18, or by an independent interlock circuit and limit signal combination circuit. Its core function is to establish a sequential interlock between flip-up 3 and curtain 15.

[0041] The preset positional relationships of the safety judgment unit include at least the following: the curtain 15 is allowed to rise or retract only when the flip cover 3 is in the open safety position; the flip cover 3 is allowed to move in the closing direction only when the Hall count of the curtain top cover 16 triggers the limit switch 19 or the curtain lifting motor 17 reaches the preset retraction position; and the flip cover motor 6 is prohibited from continuing to output closing driving force after the flip cover 3 reaches the preset release position.

[0042] like Figure 8 and Figure 9 As shown, when the screen is turned on, the user inputs an opening command via operation switch 24 or communication interface 25. Controller 18 controls the flip-cover motor 6 to rotate forward via PWM. The flip-cover motor 6 drives the flip-cover linkage 7 via the flip-cover drive shaft 5, causing the flip-cover 3 to open. When the Hall effect count of the flip-cover motor 6 reaches the preset opening position, controller 18 stops the flip-cover motor 6. After a preset delay, controller 18 controls the curtain lifting motor 17 to rotate forward via PWM. The curtain lifting motor 17 drives the lifting transmission shaft 8 to rotate, causing the curtain 15 to unfold. Simultaneously, the upper support rod 9 and lower support rod 11 unfold around the hinge 10, supporting the curtain cover 16 to rise upward. When the Hall effect count of the curtain lifting motor 17 reaches the preset unfolding position, controller 18 stops the curtain lifting motor 17 and then controls the curtain lifting motor 17 to reverse for a preset time to tension the curtain 15. In one specific implementation, the preset delay can be 1 second, and the reverse tensioning time of the curtain lifting motor 17 can be 0.5 seconds.

[0043] During the opening process described above, the preset opening position of the flip cover 3 serves not only as the travel limit of the flip cover 3 itself, but also as a safety interlock condition for allowing the curtain lifting motor 17 to start. If the flip cover 3 does not reach the preset opening position, the controller 18 keeps the curtain lifting motor 17 stopped, thereby preventing the curtain cover 16 from colliding with the flip cover 3 that has not been opened to the correct position.

[0044] like Figure 8 and Figure 10As shown, when closing, after receiving the closing command, the controller 18 first determines whether the flip cover 3 is in the safe open position. If the flip cover 3 is not in the safe open position, the controller 18 first controls the flip cover motor 6 to drive the flip cover 3 to rotate forward to the safe open position. When the flip cover 3 is in the safe open position, the controller 18 controls the curtain lifting motor 17 to reverse via PWM. The curtain lifting motor 17 drives the lifting transmission shaft 8 to rotate in the opposite direction, causing the curtain 15 to retract. At the same time, the upper support rod 9 and the lower support rod 11 fold around the hinge 10 and drive the curtain top cover 16 to descend. When the curtain top cover 16 triggers the limit switch 19, or when the Hall count of the curtain lifting motor 17 reaches the preset retraction position, the controller 18 stops the curtain lifting motor 17. Subsequently, the controller 18 controls the flip cover motor 6 to reverse. The flip cover motor 6 drives the flip cover 3 to move in the closing direction through the flip cover drive shaft 5 and the flip cover connecting rod 7. When the flip cover 3 is closed to the preset release position, the controller 18 stops the output of the flip cover motor 6, so that the flip cover 3 can complete the remaining closing stroke by its own gravity. This forms the action logic of the flip cover 3 opening first and the curtain 15 rising then, and the curtain 15 falling first and the flip cover 3 closing then. This allows the fully enclosed flip cover assembly to not only perform the dustproof closing function, but also to avoid pressure or interference when the curtain 15 has not yet been retracted into place.

[0045] like Figures 7 to 10 As shown, the control system also includes an obstacle detection module 20, a power-off memory module 21, a status indication module 22, and an operation switch 24. The obstacle detection module 20 is used to detect the operating current, operating speed, and operating time of the flip cover motor 6 and the curtain lifting motor 17. The power-off memory module 21 is used to store the operating position, Hall count value, limit parameters, and PWM duty cycle parameters of the flip cover 3 and the curtain 15. The status indication module 22 includes a hidden light strip 23 and a buzzer. The hidden light strip 23 is used to indicate the operating status or abnormal status. The operation switch 24 is used to input an open command or a close command to the controller 18.

[0046] The obstruction detection module 20 can be implemented through a sampling resistor, a current detection chip, a Hall current sensor, a speed feedback signal, or a running time counter. When the operating current exceeds a preset threshold, the operating speed is lower than a preset threshold, or the running time exceeds a preset threshold during the opening, closing, rising, or falling of the flip cover 3, the controller 18 determines that the corresponding mechanism has encountered obstruction and immediately stops the output of the corresponding motor. If the flip cover 3 encounters obstruction for the first time during the opening process, the controller 18 can control the flip cover 3 to return to a safe position and issue a prompt through a buzzer. After a preset waiting time, it will try to open again. If it encounters obstruction again, the controller 18 will stop automatic operation and enter an abnormal protection state, waiting for manual release. If the flip cover 3 encounters obstruction during the closing process, the controller 18 can control the flip cover 3 to return to a safe open position to avoid continuing to apply force in the clamping direction. If the curtain 15 encounters obstruction during the rising or falling process, the controller 18 will stop the curtain lifting motor 17 and output an abnormal prompt. The power-off memory module 21 can be FRAM, EEPROM, Flash, or other non-volatile memory, used to store the operation count of the flip-cover motor 6, the operation count of the curtain lifting motor 17, the opening limit parameters, the closing release position, the PWM duty cycle parameters, and the current working status. After the system is powered on, the controller 18 reads the parameters saved before the power failure and determines whether the flip-cover 3 and the curtain 15 are in a safe position. If there is an abnormal position, it will perform a safe return or prompt manual handling. The hidden light strip 23 in the status indication module 22 can be set on the front or upper edge of the housing 1, used to output normal lighting effects and fault lighting effects. The communication interface 25 can be one of the following: remote control receiver interface, RS232 interface, WIFI interface, or ZIGBEE interface, used to receive external open, close, stop, or lighting effect adjustment commands. However, regardless of the command input method used, the controller 18 takes the flip-cover 3 in place, the curtain 15 in place, and the obstruction state released as the premise for executing the next action, so that the closing action of the dustproof flip-cover 3, the lifting action of the curtain 15, and the user safety protection are always linked.

[0047] Regarding power-off memory and reset, the controller 18 can write the count value, movement direction, limit parameters and current working status of the flip-up motor 6 and the curtain lifting motor 17 into the power-off memory module 21 each time a Hall pulse is triggered, the running state is switched or the preset sampling period is reached. After power-on, the controller 18 reads the above parameters and compares them with the limit switch 19 and the Hall count status. When the data is abnormal or the position is unreliable, it will prioritize low-speed reset, prompt manual handling or prohibit automatic closing, so as to avoid the position loss after power failure causing interference between the flip-up 3 and the curtain cover 16.

[0048] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0049] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A flip-type electric floor curtain with anti-pinch and dustproof features, characterized in that, include: The outer casing (1) and the curtain mechanism disposed within the outer casing (1) have an upper opening (2) formed on the outer casing (1) for the curtain mechanism to move up and down. A fully enclosed flip-top assembly is disposed at the upper opening (2) of the outer shell (1) for covering the upper opening (2) after the curtain mechanism is retracted, and the fully enclosed flip-top assembly has a flip-top (3) that is rotatable relative to the outer shell (1). A flip cover anti-pinch drive assembly is disposed inside the housing (1) and is connected to the flip cover (3) for driving the flip cover (3) to open or close. The flip cover anti-pinch drive assembly has a flip cover motor (6), a flip cover drive shaft (5) and a flip cover connecting rod (7). The flip cover motor (6) drives the flip cover connecting rod (7) to move through the flip cover drive shaft (5), and the flip cover connecting rod (7) drives the flip cover (3) to open or close. Side anti-pinch assembly, the side anti-pinch assembly is disposed on the side of the housing (1) and is used to prevent foreign objects from entering the clamping area of ​​the side of the flip cover (3).

2. The anti-pinch and dustproof flip-type electric floor curtain according to claim 1, characterized in that, The flap (3) in the fully enclosed flap assembly extends along the length of the outer shell (1). The flap (3) covers the upper opening (2) and the storage cavity (4) located below the upper opening (2) in the closed position, so that the upper surface of the outer shell (1) forms an integrated shielding structure.

3. The anti-pinch and dustproof flip-top electric floor curtain according to claim 1, characterized in that, The flip-cover drive shaft (5) is located at the output end of the flip-cover motor (6). One end of the flip-cover connecting rod (7) is connected to the flip-cover drive shaft (5), and the other end of the flip-cover connecting rod (7) is connected to the flip cover (3), so that the output torque of the flip-cover motor (6) is transmitted to the flip cover (3) through the flip-cover drive shaft (5) and the flip-cover connecting rod (7).

4. The anti-pinch and dustproof flip-type electric floor curtain according to claim 1, characterized in that, The flip cover motor (6) in the flip cover anti-pinch drive assembly is a brakeless motor or a force-releasing motor. The flip cover motor (6) allows the flip cover (3) to rotate relative to the outer shell (1) under the action of external force in the working state or the stopped state. The flip cover motor (6) is configured to stop driving after the flip cover (3) is closed to a preset force-releasing position, so that the flip cover (3) moves to the closed position by its own gravity.

5. The anti-pinch and dustproof flip-top electric floor curtain according to claim 1, characterized in that, The side anti-pinch assembly includes an anti-pinch plate (13), which is fixed to the side of the outer shell (1) and close to the movement area of ​​the flip cover (3). The anti-pinch plate (13) has a side blocking part (14) located at the lateral gap between the flip cover (3) and the outer shell (1).

6. The anti-pinch and dustproof flip-top electric floor curtain according to claim 1, characterized in that, The curtain mechanism includes a curtain (15), a curtain cover (16), a curtain lifting motor (17), a lifting transmission shaft (8), and a curtain lifting support guide mechanism. The upper end of the curtain (15) is connected to the curtain cover (16). The curtain lifting support guide mechanism includes an upper support rod (9), a hinge (10), and a lower support rod (11). The upper support rod (9) and the lower support rod (11) are rotatably connected through the hinge (10). The upper support rod (9) is connected to the bottom of the curtain cover (16), and the lower support rod (11) is connected to the outer shell (1). The curtain lifting motor (17) drives the curtain (15) to unfold or retract through the lifting transmission shaft (8), and causes the curtain lifting support guide mechanism to unfold or fold, thereby driving the curtain cover (16) to rise or fall.

7. A control system for an anti-pinch and dustproof flip-top electric floor curtain, applied to the anti-pinch and dustproof flip-top electric floor curtain as described in any one of claims 1-6, characterized in that, include: The controller (18) is electrically connected to the flip-top motor (6) and the curtain lifting motor (17), characterized in that the controller (18) integrates or is connected to the flip-top drive control unit, the curtain drive control unit, the position limit unit and the safety judgment unit. The flip cover drive control unit is connected to the flip cover motor (6) and is used to control the flip cover (3) to open or close; the curtain drive control unit is connected to the curtain lifting motor (17) and is used to control the curtain (15) to rise or retract. The position limiting unit is connected to the controller (18) and is used to detect the running position of the flip cover (3) and the curtain (15); the safety judgment unit is connected to the controller (18) and is used to allow the next action to be executed after the flip cover (3) and the curtain (15) meet the preset position relationship.

8. The anti-pinch and dustproof flip-top electric floor curtain control system according to claim 7, characterized in that, The position limiting unit includes a Hall counting module and a limit switch (19). The Hall counting module is used to collect and accumulate Hall pulses from the flip-up motor (6) and the curtain lifting motor (17). The limit switch (19) is set on the recycling path of the curtain cover (16) and outputs a position signal to the controller (18) when the curtain cover (16) reaches the recycling position.

9. A control system for an anti-pinch and dustproof flip-top electric floor curtain according to claim 7, characterized in that, The controller (18) is configured to, upon receiving an opening command, first control the flip-top motor (6) to rotate forward via PWM, so that the flip-top motor (6) drives the flip-top (3) to open via the flip-top drive shaft (5) and the flip-top connecting rod (7); when the Hall count of the flip-top motor (6) reaches the preset opening position, the controller (18) stops the flip-top motor (6), and after a preset delay, controls the curtain lifting motor (17) to rotate forward via PWM, so that the curtain lifting motor (17) drives the curtain (15) to unfold via the lifting transmission shaft (8), and at the same time, unfolds the curtain lifting support guide mechanism and supports the curtain top cover (16) to rise; when the Hall count of the curtain lifting motor (17) reaches the preset unfolding position, the controller (18) stops the curtain lifting motor (17).

10. A control system for an anti-pinch and dustproof flip-top electric floor-lifting curtain according to claim 7, characterized in that, The control system also includes an obstruction detection module (20), a power-off memory module (21), a status prompt module (22), and an operation switch (24). The obstruction detection module (20) is used to detect the operating current, operating speed, and operating time of the flip-top motor (6) and the curtain lifting motor (17). The power-off memory module (21) is used to store the operating position, Hall count value, limit parameters, and PWM duty cycle parameters of the flip-top (3) and the curtain (15). The status prompt module (22) has a hidden light strip (23) and a buzzer. The hidden light strip (23) is used to indicate the operating status or abnormal status. The operation switch (24) is used to input an opening command or a closing command to the controller (18).

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