Manual-automatic integrated door curtain

Abstract

The utility model relates to the field of intelligent household roller shutter doors and curtains, and discloses a manual-automatic integrated door curtain which is characterized in that a transmission shaft is arranged in an upper frame, one end of the transmission shaft is connected with a motor, the other end of the transmission shaft penetrates through a rope winder and a lead screw to be connected with a universal joint, a reel is installed in a left frame, curtain cloth is installed on the reel and connected with a movable frame, and a coil spring is installed in the reel; an upper fixing piece is arranged on the upper portion of the coil spring, the upper fixing piece is connected with the upper row gear set, a lower fixing piece is arranged on the lower portion of the coil spring, the lower fixing piece and the reel are fixed together, the reel is connected with the lower row gear set, elasticity of the coil spring is adjusted when the coil spring is preassembled into the reel, and the upper row gear set and the lower row gear set form forward force and reverse force through the elasticity of the coil spring. The elastic force generated by the coil spring enables the reel to drive the curtain cloth to be rewound, the force generated by the reel to drive the curtain cloth to be rewound and the force generated by the rope winder to pull the pull line to drive the movable frame to move are a pair of opposite forces, the flatness of the curtain cloth is guaranteed through stable tension formed by the opposite forces, and the door curtain can be operated manually or automatically.

Description

Technical Field

[0001] This utility model relates to the field of smart home roller blinds and curtains, and in particular to a manual / automatic integrated curtain. Background Technology

[0002] Door curtains serve various purposes in daily use, including ventilation, heat insulation, and wind and insect protection, and are widely used in modern homes, businesses, and factories. However, they often present the following problems: lightweight door curtains are easily blown up by the wind, making a loud banging noise. While magnetic door curtains solve the problem of being blown up by the wind and automatically closing after someone enters or exits, they still need to be pushed open by hand or body. Their surface gets dirty easily, facilitating the spread of viruses and making entry and exit inconvenient. The magnetic strips easily attract dirt, discolor, and are difficult to clean, affecting aesthetics. Large gaps at the bottom of the curtain allow dust to blow in, and insects, snakes, and rodents can easily enter the house, posing a danger. Modern door curtains often fail to match contemporary architectural styles, resulting in an unsightly and uneven appearance, especially over time, yellowing, getting dirty, and becoming uneven, making a nice house look cheap. Furthermore, they are difficult to store when not in use. Convenient, but ordinary retractable screen doors require a lot of effort to pull out the curtain, and the spring is used to roll it back. Each opening and closing puts stress on the spring, and over time, the elasticity weakens and fails, causing the curtain to not roll back up, making it impossible for people to enter or exit. This is especially problematic in case of fire or other emergencies, making escape difficult. Opening and closing the door is also inconvenient. The door can be stopped at any position by friction, which is difficult to pull out, has a short lifespan for the friction parts, and is unstable and doesn't stop reliably. Due to people's demands for convenient, hygienic, and technologically advanced access, automatic doors are chosen. However, they require twice the space to open, requiring modifications to the original building and doorway, resulting in wasted space. Automatic doors are also more expensive. When the curtain is open, flies and mosquitoes can enter.

[0003] In patent CN202310867281.X, the cord winder cannot guarantee that the cord will be accurately wound around the winder when winding the pull cord, which may result in tangled cord. The cord tensioner and spring cannot solve the matching error between the cord winder and the roller, as well as the problem of changes in the curtain and the pull cord. When stationary, the pull cord is taut, keeping the curtain taut, but when moving, there is still an ineffective stroke, and the problem of idle stroke is not solved, resulting in inconsistent tension. At the same time, the addition of the pull wheel increases the wear of the pull cord. The cord winder is connected to the roller and cannot be adjusted. The changes in the roller thickness, the matching error of the cord winder, the thermal expansion and contraction of the curtain, and the elongation coefficient of the pull cord all cause changes in the curtain tension. Moreover, when the curtain is wide, the cord winder must become bulky, resulting in wasted space. If the pull cord breaks and there is a power outage (or motor failure), the curtain cannot automatically wind back. The roller rolls up the curtain, and the diameter of the curtain varies. The curtain needs to run in the upper and lower tracks (the upper and lower tracks ensure the flatness of the curtain). If the curtain is taut and the roller cannot move, there will be a diagonal pull on the curtain as it enters the guide rail, which will affect the service life of the curtain. Summary of the Invention

[0004] To address the above issues, this utility model provides a manual / automatic integrated door curtain. It can be opened and closed manually or electrically controlled by sensors. In the event of a power outage, it can be manually pushed and pulled. Utilizing the characteristics of a coil spring, it achieves a balance between the winding and pulling forces, making pushing and pulling very effortless and allowing for easy stopping. The use of a rope winder (with a large and small end design) synchronized with the thickness of the roller ensures that the spring's force does not change with each opening and closing of the curtain, maintaining a constant elasticity and ensuring uniform tension of the curtain, thus extending the spring's lifespan. Because the rope winder can move back and forth, it prevents tangling. Even if the rope breaks, the curtain automatically rolls back, not affecting entry or exit. The roller is not fixed, preventing oblique pulling force on the curtain as it enters the track, further extending the curtain's lifespan. Incorporating a mosquito and fly repellent device, it effectively prevents mosquitoes and flies from entering when the curtain is open. When closed, the curtain is a sealed structure, preventing crawling insects, snakes, and rodents from entering from the bottom. The curtain is flat and aesthetically pleasing.

[0005] The technical solution of this utility model is as follows: A manual / automatic integrated door curtain is provided, comprising an upper frame, a lower frame, a left frame, a right frame, a movable frame, a pull cord one, a pull cord two, a roller, a rope winder, a motor, a drive shaft, a lead screw, a universal joint, a base, umbrella wheels one and two, an upper gear set, a lower gear set, a bearing seat, a bearing, a fixed base, and a curtain fabric. The upper frame is equipped with a drive shaft, which is connected to a bearing. The bearing is connected to a bearing seat, and the bearing seat is connected to the base and fixed to the upper frame. The bearing on the bearing seat allows the drive shaft to rotate freely. The drive shaft is connected to a motor at one end, which is fixed to a base via a mounting bracket. The base is fixed to the upper frame. The other end of the drive shaft passes through a rope winder, a lead screw, and is connected to a universal joint. The lead screw is fixed to a bearing seat. The universal joint is connected to a first parasol wheel, which is connected to a second parasol wheel, which is connected to an upper gear set. A roller is installed in the left frame, and a curtain is installed on the roller, connected to the movable frame. A coil spring is installed inside the roller, with an upper fixing member at the top and connected to the upper gear set. A lower fixing member is located at the bottom of the coil spring. The lower fixing part is fixed together with the roller, and the roller is connected to the lower gear set. The coil spring is pre-installed into the roller with adjusted elasticity. The elasticity of the coil spring causes the upper and lower gear sets to form opposite forces. The elasticity generated by the coil spring causes the roller to drive the curtain to roll back. The motor drives the rope winder to rotate through the transmission shaft. The rope winder is connected to one end of pull cable one. The other end of pull cable one passes through the pull cable wheel and is connected to the lower part of the moving frame. One end of pull cable two passes through the pull cable wheel and is connected to the upper part of the moving frame. The other end of pull cable two is connected to pull cable one by a fixing mechanism. The block connection, pull cord one and pull cord two drive the moving frame to move, and the elastic force generated by the coil spring causes the roller to drive the curtain to roll back. The force of the roller driving the curtain to roll back and the force formed by the rope winding device pulling pull cord one and pull cord two to move the moving frame are a pair of opposite forces. The stable tension formed by this opposite force ensures the flatness of the curtain. Regardless of the thermal expansion and contraction of the curtain or the extension of pull cord one and pull cord two, the force can be kept consistent. This opposite force forms a force balance, so it can be stopped at any time when it needs to be pulled.

[0006] The rope winder is connected to the nut. The rope winder can move left and right on the screw via the threads on the nut. This left-right movement ensures the cable winds smoothly around the winder without tangling. The drive shaft drives the rope winder, which in turn rotates the nut. For every revolution of the nut, the rope winder moves one thread pitch accordingly.

[0007] A ratchet is mounted on the drive shaft.

[0008] The upper frame is equipped with a pull-cord wheel frame base, on which a rotating shaft is installed. The rotating shaft connects the pull-cord wheel frame and a torsion spring. A pull-cord wheel is installed on the pull-cord wheel frame. The pull-cord wheel frame base is also equipped with a limit switch and a pawl. One end of the pull cord passes through the pull-cord wheel and connects to the rope winder. When the pull cord is taut, the pull-cord wheel frame rotates through the rotating shaft and touches the pawl. The pawl separates from the ratchet, and the pull-cord wheel frame also leaves the limit switch, and the curtain is in the open position. When the pull cord suddenly breaks, the pull-cord wheel frame returns to its original position under the action of the torsion spring, touches the limit switch, stops the motor, and the pawl also returns to its original position, locking the ratchet. This keeps the end of the upper gear set connected to the upper fixing part of the coil spring stationary. The roller connected to the end of the lower fixing part of the coil spring will roll back the curtain under the action of the coil spring, preventing the pull cord from breaking and failing to roll back. The design of the large and small heads of the rope roller, which are synchronized with the change in the thickness of the roller, ensures that the curtain maintains a certain elasticity every time it is opened and closed, no matter how many times it is run. The spring does not participate in the work and always maintains a certain elasticity, so there is no elasticity decay, which guarantees the life of the spring. Only when the pull cord suddenly breaks will the elasticity be released, and the spring will drive the roller to roll up the curtain seven times.

[0009] A lever frame is located between the upper and lower gear sets, with a rotating lever mounted on the lever frame. One of the gears in the lower gear set has a protruding lever. In case of unexpected jamming, the protruding lever and the rotating lever will connect to resolve the jamming issue. When the pull cable suddenly breaks, the protruding lever will jam the upper gear set and stop it. When the roller rewinds the curtain, it will move the rotating lever to the desired position, thus breaking the connection. Although the upper gear set cannot rotate and the motor stops running, the moving frame can still manually pull out the curtain. Rewinding relies on the return force of the coil spring. After the pull cable is readjusted, the rotating lever can be rotated back to its original position.

[0010] The cord reel is equipped with a pull groove, which is a tapered design with different ends. Since the curtain is rolled on the roller, the thickness of the roller changes when the curtain is unfolded and retracted. Therefore, the pull groove on the cord reel is tapered to match the change in the thickness of the roller. This ensures that the spring force inside the roller remains constant, and the operating tension does not fluctuate.

[0011] The upper frame is equipped with an upper track for the curtain and an upper track for the moving frame, while the lower frame is equipped with a lower track for the curtain and a lower track for the moving frame. The moving frame moves between the upper and lower tracks, and the curtain moves between the upper and lower tracks to keep the curtain flat. Spring plates are installed on the upper track to ensure that the curtain maintains a certain tension and runs smoothly under thermal expansion and contraction or tightening. The curtain is connected to the moving frame and moves between the upper and lower tracks as the moving frame moves.

[0012] The left frame is provided with upper and lower slide rails at both ends. The upper and lower parts of the roller are provided with pulleys, which are connected to the upper and lower slide rails. In this way, the roller as a whole can move within a certain range, so that the curtain on the roller always runs on the upper and lower curtain rails, ensuring the life of the curtain.

[0013] The upper gear set, lower gear set, parachute wheel one and parachute wheel two are mounted on the gear frame, which is mounted on the upper part of the left frame. The gear frame is also equipped with pulleys, which are connected to the upper slide rail.

[0014] The height of the roller and spring can be adjusted arbitrarily according to the height of the curtain and the door frame.

[0015] The outer cover installed on the upper frame can protect the equipment installed on the upper frame and is also aesthetically pleasing.

[0016] The upper frame is equipped with a sensor and a mosquito / fly repellent device. The sensor detects a person, opens the curtain, and closes it when the person leaves. However, mosquitoes and flies may enter when the curtain is open; the repellent device prevents this. The curtain is completely closed from top to bottom and left to right. When closed, dust, snakes, rats, and other insects are kept out and prevented from entering the room.

[0017] When the installation environment requirements for the lower frame are low, a bottom rail can be used instead of the lower frame, and a drag chain can be used. The drag chain and the pull line work together to push and pull the frame to move.

[0018] The door curtain can be operated manually or automatically. It is in automatic mode when the motor is in use, and can be manually controlled when the power is off and the motor is not in use.

[0019] Compared with the prior art, the beneficial effects of this utility model are: the curtain can be controlled manually or automatically; it can be manually adjusted after a power outage; the curtain moves smoothly and is very easy to push and pull; it can be stopped at will without tangling; and if the pull cord breaks, the curtain can be manually adjusted to open and close smoothly, increasing the service life of the curtain. Attached Figure Description

[0020] The present invention will be further described below with reference to the figures:

[0021] Figure 1 This is a front structural view of the single-opening door of this utility model;

[0022] Figure 2 This is a side view of the structure of this utility model;

[0023] Figure 3 This is a front structural diagram of the double-door design of this utility model;

[0024] Figure 4 This is a cross-sectional structural diagram of the single-opening door of this utility model;

[0025] Figure 5 This is a cross-sectional view of the side of this utility model;

[0026] Figure 6 This is a partial structural diagram of the present invention;

[0027] Figure 7 This is a cross-sectional structural diagram of the double-door of this utility model;

[0028] Figure 8 This is a partial structural diagram of the present invention;

[0029] Figure 9 This is a partial structural diagram of the present invention;

[0030] Figure 10 This is a partial structural diagram of the present invention;

[0031] Figure 11 This is a partial structural diagram of the present invention;

[0032] Figure 12 This is a partial structural diagram of the present invention;

[0033] Figure 13 This is a structural diagram of a single-door cable chain structure of this utility model;

[0034] Figure 14 This is a structural diagram of a double-door cable chain type of this utility model;

[0035] Figure 15 This is a partial structural diagram of the present invention;

[0036] Figure 16 This is a partial structural diagram of the present invention;

[0037] Figure 17 This is a partial structural diagram of the present invention;

[0038] Figure 18 This is a partial structural diagram of the present invention;

[0039] Figure 19 This is a partial structural diagram of the present invention;

[0040] Figure 20 This is a partial structural diagram of the present invention;

[0041] Figure 21 This is a partial structural diagram of the present invention;

[0042] Figure 22 This is a partial structural diagram of the present invention.

[0043] Figure 1 , Figure 2 , Figure 3, Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15 , Figure 16 , Figure 17 , Figure 18 , Figure 19 , Figure 20 , Figure 21 , Figure 22 The components shown are: 1. Upper frame, 2. Lower frame, 3. Left frame, 4. Right frame, 5. Outer cover, 6. Moving frame, 7. Reel, 8. Coil spring, 9. Upper fixing component, 10. Lower fixing component, 11. Upper gear set, 12. Lower gear set, 13. Base, 14. Parasol wheel one, 15. Parasol wheel two, 16. Pull cord one, 17. Curtain, 18. Universal joint, 19. Drive shaft, 20. Rope winder, 21. Motor, 22. Nut, 23. Lead screw, 24. Pull cord wheel frame, 25. Pawl, 26. Ratchet, 27. Limit switch, 28. Torsion spring. 9. Pulley; 30. Bottom rail; 31. Cable chain; 32. Gear frame; 33. Pull cable groove; 34. Upper curtain track; 35. Lower curtain track; 36. Protruding lever; 37. Rotating lever; 38. Sensor probe; 39. Mosquito and fly repellent device; 40. Rotating shaft; 41. Pull cable wheel; 42. Lever bracket; 43. Fixing block; 44. Pull cable II; 45. Bearing seat; 46. Bearing; 47. Fixing seat; 48. Upper track of moving frame; 49. Lower track of moving frame; 50. Spring plate; 51. Pull cable wheel frame base; 52. Upper slide rail; 53. Lower slide rail. Detailed Implementation

[0044] The present invention will be further described in detail below with reference to the figures. It should be noted that the figures are only used to explain the present invention and are illustrative of the embodiments of the present invention, and should not be construed as limiting the present invention.

[0045] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] like Figure 1 , Figure 2 , Figure 3、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 、 Figure 13 、 Figure 14 、 Figure 15 、 Figure 16 、 Figure 17 、 Figure 18 、 Figure 19 、 Figure 20 、 Figure 21 、 Figure 22As shown, the manual / automatic integrated door curtain includes an upper frame 1, a lower frame 2, a left frame 3, a right frame 4, a movable frame 6, a pull cord 16, a pull cord 24, a roller 7, a rope winder 20, a motor 21, a drive shaft 19, a lead screw 23, a universal joint 18, a base 13, umbrella wheels 14 and 15, an upper gear set 11, a lower gear set 12, a bearing seat 45, a bearing 46, a fixed seat 47, and a curtain fabric 17. The upper frame 1 contains a drive shaft 19, which is connected to a bearing 46. The bearing 46 is connected to a bearing seat 45, and the bearing seat 45 is fixed to the base 13 within the upper frame 1. The bearing 46 on the bearing seat 45 allows the drive shaft 19 to move freely. The drive shaft 19 rotates, with one end connected to the motor 21. The motor 21 is fixed to the base 13 via a fixing seat 47, and the base 13 is fixed in the upper frame 1. The other end of the drive shaft 19 passes through the rope winder 20 and the lead screw 23 and is connected to the universal joint 18. The lead screw 23 is fixed to the bearing seat 45. The universal joint 18 is connected to the first parasol wheel 14, which is connected to the second parasol wheel 15. The second parasol wheel 15 is connected to the upper gear set 11. A roller 7 is installed in the left frame 3, and a curtain 17 is installed on the roller 7. The curtain 17 is connected to the movable frame 6. A coil spring 8 is installed inside the roller 7, and an upper fixing member 9 is provided on the upper part of the coil spring 8. The upper fixing member 9 is connected to the upper gear set 11. The lower part of the coil spring 8 is provided with a lower fixing part 10, which is fixed together with the roller 7. The roller 7 is connected to the lower gear set 12. The coil spring 8 is pre-installed into the roller 7 with adjusted elasticity. The elasticity of the coil spring 8 causes the upper gear set 11 and the lower gear set 12 to form positive and negative forces. The elasticity generated by the coil spring 8 causes the roller 7 to drive the curtain 17 to roll back. The motor 21 drives the rope winder 20 to rotate through the transmission shaft 19. The rope winder 20 is connected to one end of the pull cable 16. The other end of the pull cable 16 passes through the pull wheel 41 and is connected to the lower part of the moving frame 6. One end of the pull cable 44 passes through the pull wheel 41 and is connected to the upper part of the moving frame. 4. The other end is connected to pull cord 16 via fixing block 43. Pull cord 16 and pull cord 24 drive the moving frame 6 to move. The elastic force generated by the coil spring 8 causes the roller 7 to drive the curtain 17 to roll back. The force of the roller 7 driving the curtain 17 to roll back and the force formed by the rope winder 20 pulling pull cord 16 and pull cord 24 to drive the moving frame 6 are a pair of opposite forces. The stable tension formed by this opposite force ensures the flatness of the curtain 17. Regardless of the thermal expansion and contraction of the curtain 17 or the extension of pull cord 16 and pull cord 24, the force can be kept consistent. This opposite force forms a force balance, so it can be stopped at any time when it needs to be pulled.

[0047] The rope winder 20 is connected to the nut 22. The rope winder 20 can move left and right on the lead screw 23 through the thread on the nut 22. The left and right movement of the rope winder 20 is to ensure that the pull line 16 can be smoothly wound on the rope winder 20 without getting tangled. The drive shaft 19 drives the rope winder 20, which in turn drives the nut 22 to rotate. For every rotation of the nut 22, the rope winder 20 will move one thread pitch accordingly.

[0048] A ratchet 26 is mounted on the drive shaft 19.

[0049] The upper frame 1 is equipped with a pull-line wheel frame base 51. A rotating shaft 40 is installed on the pull-line wheel frame base 51, connecting the pull-line wheel frame 24 and the torsion spring 28. A pull-line wheel 41 is installed on the pull-line wheel frame 24. The pull-line wheel frame base 51 is also equipped with a limit switch 27 and a pawl 25. One end of the pull-line 16 passes through the pull-line wheel 41 and is connected to the rope winder 20. When the pull-line 16 is taut, the pull-line wheel frame 24 rotates through the rotating shaft 40 and contacts the pawl 25. The pawl 25 separates from the ratchet 26. 24 also leaves the limit switch 27, and the curtain is in the open state. When the pull cord 16 suddenly breaks, the pull cord wheel 24 returns to its original position under the action of the torsion spring 28, hitting the limit switch 27, stopping the motor 21. The pawl 25 also returns to its original position, locking the ratchet 26. This keeps one end of the upper gear set 11 connected to the upper fixing part 9 of the coil spring 8 stationary. The roller 7 connected to one end of the lower fixing part 10 of the coil spring 8 will then roll back the curtain 17 under the action of the coil spring 8, preventing the situation where the pull cord breaks and cannot be rolled back. The rope winder 20 adopts a large and small head design that is synchronized with the change in thickness of the roller 7, so that the curtain always maintains a certain elasticity every time it is opened and closed, no matter how many times it is run. The spring 8 does not participate in the work and always maintains a certain elasticity, without any elasticity decay, ensuring the life of the spring 8. Only when the pull cord 16 suddenly breaks will the elasticity be released, and the spring 8 will drive the roller 7 to roll back the curtain 17.

[0050] A lever frame 42 is provided between the upper gear set 11 and the lower gear set 12. A rotating lever 37 is installed on the lever frame 42. One of the gears in the lower gear set 12 is equipped with a protruding lever 36. In case of unexpected jamming, the protruding lever 36 and the rotating lever 37 will connect to resolve the jamming problem. When the pull cable 16 suddenly breaks, the protruding lever 36 jams the upper gear set 11 and stops it from moving. When the roller 7 rewinds the curtain 17, it will turn the rotating lever 37 to the 90-degree position, thus breaking the connection. Although the upper gear set 11 cannot rotate and the motor stops running, the moving frame 6 can still manually pull out the curtain 17. The rewinding relies on the rewinding force of the coil spring 8. After the pull cable 16 is readjusted, the rotating lever 37 can be rotated back to its original position.

[0051] The cord reel 20 is provided with a cord groove 33, which is a tapered design with different ends. Since the curtain 17 is rolled on the roller 7, the thickness of the roller 7 changes when the curtain is unfolded and retracted. Therefore, the cord groove 33 on the cord reel 20 is a tapered design with different ends to match the change in the thickness of the roller 7. This ensures that the spring force of the spring 8 in the roller 7 remains constant, and the operating tension does not fluctuate.

[0052] The upper frame 1 is equipped with an upper curtain track 34 and a lower movable frame track 48, and the lower frame 2 is equipped with a lower curtain track 35 and a lower movable frame track 49. The movable frame 6 moves between the upper movable frame track 48 and the lower movable frame track 49, and the curtain 17 moves between the upper curtain track 34 and the lower curtain track 35 to keep the curtain 17 flat. A spring sheet 50 is installed on the upper curtain track 34 to keep the curtain 17 under certain tension and run smoothly under thermal expansion and contraction or tightening. The curtain 17 is connected to the movable frame 6 and moves between the upper curtain track 34 and the lower curtain track 35 as the movable frame 6 moves.

[0053] The left frame 3 is provided with an upper slide rail 52 and a lower slide rail 53 at its upper and lower ends. The upper and lower parts of the roller 7 are provided with pulleys 29, which are connected to the upper slide rail 52 and the lower slide rail 53. In this way, the roller 7 moves within a certain range, so that the curtain on the roller 7 always runs on the upper curtain track 34 and the lower curtain track 35, thus ensuring the life of the curtain.

[0054] The upper gear set 11, the lower gear set 12, the parachute wheel 14 and the parachute wheel 2 15 are mounted on the gear frame 32. The gear frame 32 is mounted on the upper part of the left frame 3. The gear frame 32 is also provided with a pulley 29, which is connected to the upper slide rail 52.

[0055] The heights of the roller 7 and the spring 8 can be adjusted arbitrarily according to the heights of the curtain 17 and the door frame.

[0056] The upper frame 1 is fitted with an outer cover 5, which can protect the equipment installed on the upper frame and is aesthetically pleasing.

[0057] The upper frame 1 is equipped with a sensor 38 and a mosquito and fly repellent device 39. The sensor 38 detects a person and opens the curtain; it closes when the person leaves. However, mosquitoes and flies may enter when the curtain is open; the mosquito and fly repellent device is installed to prevent this. The curtain is completely closed from top to bottom and left to right. When closed, dust, snakes, rats, and other insects are kept out and prevented from entering the room.

[0058] When the installation environment requirements for the lower frame 2 are low, the lower rail 30 can be used instead of the lower frame 2, and the drag chain 31 can be used to move the frame 6 by pushing and pulling in conjunction with the pull line.

[0059] The curtain can be operated manually or automatically. When motor 21 is in use, it is in automatic mode. When there is a power outage and motor 21 is not in use, it can be manually controlled.

[0060] Working principle: After the curtain is installed, when the curtain 17 needs to be pulled out, the motor 21 is started via remote control. 21 drives the drive shaft 19 to rotate, which in turn drives the rope winder 20, thereby driving the nut 22 to rotate. The rope winder 20 can move left and right on the screw 23 through the thread on the nut 22. For every rotation of the nut 22, the rope winder 20 will move one pitch accordingly. Pull cord 16 is smoothly wound on the rope winder 20 without tangling. The drive shaft 19 drives the rope winder 20 to wind one end of pull cord 16, thereby driving pull cord 16 and pull cord 24 to pull the moving frame 6 to pull the curtain 17 out of the roller 7. The drive shaft 19 drives the umbrella wheel 14 and umbrella wheel 2 15, and the upper gear set 11 to rotate forward through the universal joint 18. The upper gear set 11 causes the upper fixing part 9 of the coil spring 8 to rotate forward, and the lower gear set 12 causes the lower fixing part 10 of the coil spring 8 to rotate backward. When the curtain is pre-installed into the roller 7, the spring 8 is adjusted to its elasticity and inserted into the roller 7. The elasticity of the spring 8 causes the upper gear set 11 and the lower gear set 12 to generate opposing forces. The elasticity generated by the spring 8 causes the roller 7 to drive the curtain 17 to roll back. The force of the roller 7 driving the curtain 17 to roll back and the force generated by the rope winder 20 pulling the pull cord 16 and pull cord 244 to move the moving frame 6 are a pair of opposite forces. The stable tension formed by this opposite force ensures the smooth operation of the curtain 17. When it is necessary to retract the curtain, the motor 21 is rotated in the opposite direction, the rope winder 20 releases the pull cord 16, and the spring 8 drives the roller 7 to roll back the curtain 17.

[0061] When the pull cord suddenly breaks, the pull cord wheel frame 24 returns to its original position under the action of the torsion spring 28, and hits the limit switch 27, causing the motor 21 to stop. The pawl 25 also returns to its original position, locking the ratchet 26. This will keep one end of the upper gear 11 connected to the upper fixing part 9 of the coil spring 8 stationary. The roller 7 connected to one end of the lower fixing part 10 of the coil spring 8 will roll back the curtain 17 under the action of the coil spring 8. This will prevent the situation where the pull cord breaks and cannot be rolled back, and solve the problem of the curtain 17 getting stuck and unable to be retracted after the pull cord suddenly breaks.

[0062] When an unexpected jam occurs, the upper gear set 11 stops moving. When the roller 7 rewinds the curtain 17, it will move the rotating lever 37 to the 90-degree position, causing the protruding lever 36 to lock the upper gear set 11. Although the upper gear set 11 remains stationary, the roller 7 can still pull the curtain open thanks to the elasticity of the coil spring 8. After the pull cord 16 is readjusted, the rotating lever 37 can be rotated back to its original position.

[0063] The door curtain can be operated manually or automatically, but it is generally used in automatic mode. In case of power failure, it can be manually controlled. To control it manually, simply pull the moving frame 6. The moving frame 6 drives the curtain 17, which in turn drives the roller 7. The roller 7 drives the lower gear set 12, which in turn drives the upper gear set 11 using the elasticity of the coil spring 8. The upper gear set 11 drives the rope winder 20 to rotate and wind up the pull cord 16 through the umbrella wheel 2 15, umbrella wheel 1 14, universal joint 18 and drive shaft 19, thereby pulling the door curtain out. To close it manually, simply push the moving frame to retract the door curtain.

[0064] There are no restrictions on the material of the curtain 17; it can be mesh, transparent glass (PVC, PC, TPU, etc.), sunshade fabric, etc.

[0065] Patterns and advertisements can be sprayed on the curtain fabric 17 to enhance the aesthetics and practicality of the curtain.

[0066] Example 1

[0067] like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 15 , Figure 16 , Figure 17 , Figure 18 , Figure 19 , Figure 20 , Figure 21 , Figure 22As shown, when using the manual / automatic single-opening door curtain, it includes an upper frame 1, a lower frame 2, a left frame 3, a right frame 4, a movable frame 6, a pull cord 16, a pull cord 24, a roller 7, a rope winder 20, a motor 21, a drive shaft 19, a lead screw 23, a universal joint 18, a base 13, umbrella wheels 14 and 15, an upper gear set 11, a lower gear set 12, a bearing seat 45, a bearing 46, a fixed seat 47, and a curtain fabric 17. The upper frame 1 contains a drive shaft 19, which is connected to a bearing 46. The bearing 46 is connected to a bearing seat 45, and the bearing seat 45 is fixed to the base 13 within the upper frame 1. The bearing 46 on the bearing seat 45 allows the drive shaft 19 to rotate freely, thus transmitting power. One end of shaft 19 is connected to motor 21, which is fixed to base 13 via mounting bracket 47. Base 13 is fixed in upper frame 1. The other end of shaft 19 passes through rope winder 20 and lead screw 23 and is connected to universal joint 18. Lead screw 23 is fixed to bearing seat 45. Universal joint 18 is connected to parasol wheel 14, which is connected to parasol wheel 15, which is connected to upper gear set 11. A roller 7 is installed in left frame 3, and a curtain 17 is installed on roller 7. The curtain 17 is connected to movable frame 6. A coil spring 8 is installed inside roller 7, and an upper fixing member 9 is provided on the upper part of coil spring 8. The upper fixing member 9 is connected to upper gear set 11. The lower part of the 8 is provided with a lower fixing member 10, which is fixed together with the roller 7. The roller 7 is connected to the lower gear set 12. The coil spring 8 is pre-installed into the roller 7 with adjusted elasticity. The elasticity of the coil spring 8 causes the upper gear set 11 and the lower gear set 12 to form positive and negative forces. The elasticity generated by the coil spring 8 causes the roller 7 to drive the curtain 17 to roll back. The motor 21 drives the rope winder 20 to rotate through the transmission shaft 19. The rope winder 20 is connected to one end of the pull cable 16. The other end of the pull cable 16 passes through the pull wheel 41 and is connected to the lower part of the moving frame 6. One end of the pull cable 24 passes through the pull wheel 41 and is connected to the upper part of the moving frame. The other end of the pull cable 24 passes through the pull wheel 41 and is connected to the upper part of the moving frame. One end is connected to pull cord 16 via fixing block 43. Pull cord 16 and pull cord 24 drive the moving frame 6 to move. The elastic force generated by the coil spring 8 causes the roller 7 to drive the curtain 17 to roll back. The force of the roller 7 driving the curtain 17 to roll back and the force formed by the rope winder 20 pulling pull cord 16 and pull cord 24 to drive the moving frame 6 are a pair of opposite forces. The stable tension formed by this opposite force ensures the flatness of the curtain 17. Regardless of the thermal expansion and contraction of the curtain 17 or the extension of pull cord 16 and pull cord 24, the force can be kept consistent. This opposite force forms a force balance, so it can be stopped at any time when it needs to be pulled to a certain point.

[0068] The rope winder 20 is connected to the nut 22. The rope winder 20 can move left and right on the lead screw 23 through the thread on the nut 22. The left and right movement of the rope winder 20 is to ensure that the pull line 16 can be smoothly wound on the rope winder 20 without getting tangled. The drive shaft 19 drives the rope winder 20, which in turn drives the nut 22 to rotate. For every rotation of the nut 22, the rope winder 20 will move one thread pitch accordingly.

[0069] A ratchet 26 is mounted on the drive shaft 19.

[0070] The upper frame 1 is equipped with a pull-line wheel frame base 51. A rotating shaft 40 is installed on the pull-line wheel frame base 51, connecting the pull-line wheel frame 24 and the torsion spring 28. A pull-line wheel 41 is installed on the pull-line wheel frame 24. The pull-line wheel frame base 51 is also equipped with a limit switch 27 and a pawl 25. One end of the pull-line 16 passes through the pull-line wheel 41 and is connected to the rope winder 20. When the pull-line 16 is taut, the pull-line wheel frame 24 rotates through the rotating shaft 40 and contacts the pawl 25. The pawl 25 separates from the ratchet 26. 24 also leaves the limit switch 27, and the curtain is in the open state. When the pull cord 16 suddenly breaks, the pull cord wheel 24 returns to its original position under the action of the torsion spring 28, hitting the limit switch 27, stopping the motor 21. The pawl 25 also returns to its original position, locking the ratchet 26. This keeps one end of the upper gear set 11 connected to the upper fixing part 9 of the coil spring 8 stationary. The roller 7 connected to one end of the lower fixing part 10 of the coil spring 8 will then roll back the curtain 17 under the action of the coil spring 8, preventing the situation where the pull cord breaks and cannot be rolled back. The rope winder 20 adopts a large and small head design that is synchronized with the change in thickness of the roller 7, so that the curtain always maintains a certain elasticity every time it is opened and closed, no matter how many times it is run. The spring 8 does not participate in the work and always maintains a certain elasticity, without any elasticity decay, ensuring the life of the spring 8. Only when the pull cord 16 suddenly breaks will the elasticity be released, and the spring 8 will drive the roller 7 to roll back the curtain 17.

[0071] A lever frame 42 is provided between the upper gear set 11 and the lower gear set 12. A rotating lever 37 is installed on the lever frame 42. One of the gears in the lower gear set 12 is equipped with a protruding lever 36. In case of unexpected jamming, the protruding lever 36 and the rotating lever 37 will connect to resolve the jamming problem. When the pull cable 16 suddenly breaks, the protruding lever 36 jams the upper gear set 11 and stops it from moving. When the roller 7 rewinds the curtain 17, it will turn the rotating lever 37 to the 90-degree position, thus breaking the connection. Although the upper gear set 11 cannot rotate and the motor stops running, the moving frame 6 can still manually pull out the curtain. The rewinding relies on the rewinding force of the coil spring 8. After the pull cable 16 is readjusted, the rotating lever 37 can be rotated back to its original position.

[0072] The cord reel 20 is provided with a cord groove 33, which is a tapered design with different ends. Since the curtain 17 is rolled on the roller 7, the thickness of the roller 7 changes when the curtain is unfolded and retracted. Therefore, the cord groove 33 on the cord reel 20 is a tapered design with different ends to match the change in the thickness of the roller 7. This ensures that the spring force of the coil spring 8 in the roller 7 remains constant, and the operating tension does not fluctuate.

[0073] The upper frame 1 is equipped with an upper curtain track 34 and a lower movable frame track 48, and the lower frame 2 is equipped with a lower curtain track 35 and a lower movable frame track 49. The movable frame 6 moves between the upper movable frame track 48 and the lower movable frame track 49, and the curtain 17 moves between the upper curtain track 34 and the lower curtain track 35 to keep the curtain 17 flat. A spring sheet 50 is installed on the upper curtain track 34 to keep the curtain 17 under certain tension and run smoothly under thermal expansion and contraction or tightening. The curtain 17 is connected to the movable frame 6 and moves between the upper curtain track 34 and the lower curtain track 35 as the movable frame 6 moves.

[0074] The left frame 3 is provided with an upper slide rail 52 and a lower slide rail 53 at its upper and lower ends. The upper and lower parts of the roller 7 are provided with pulleys 29, which are connected to the upper slide rail 52 and the lower slide rail 53. In this way, the roller 7 moves within a certain range, so that the curtain on the roller 7 always runs on the upper curtain track 34 and the lower curtain track 35, thus ensuring the life of the curtain 17.

[0075] The upper gear set 11, the lower gear set 12, the parachute wheel 14 and the parachute wheel 2 15 are mounted on the gear frame 32. The gear frame 32 is mounted on the upper part of the left frame 3. The gear frame 32 is also provided with a pulley 29, which is connected to the upper slide rail 52.

[0076] The heights of the roller 7 and the spring 8 can be adjusted arbitrarily according to the heights of the curtain 17 and the door frame.

[0077] The outer cover 5 installed on the upper frame 1 can protect the equipment installed in the upper frame 1 and is aesthetically pleasing.

[0078] The upper frame 1 is equipped with a sensor 38 and a mosquito and fly repellent device 39. The sensor 38 detects a person and opens the curtain; it closes when the person leaves. However, mosquitoes and flies may enter when the curtain is open; the mosquito and fly repellent device is installed to prevent this. The curtain is completely closed from top to bottom and left to right. When closed, dust, snakes, rats, and other insects are kept out and prevented from entering the room.

[0079] Working principle: After the curtain is installed, when the curtain 17 needs to be pulled out, the motor 21 is started via remote control. 21 drives the drive shaft 19 to rotate, which in turn drives the rope winder 20, thereby driving the nut 22 to rotate. The rope winder 20 can move left and right on the screw 23 through the thread on the nut 22. For every rotation of the nut 22, the rope winder 20 will move one pitch accordingly. Pull cord 16 is smoothly wound on the rope winder 20 without tangling. The drive shaft 19 drives the rope winder 20 to wind one end of pull cord 16, thereby driving pull cord 16 and pull cord 24 to pull the moving frame 6 to pull the curtain 17 out of the roller 7. The drive shaft 19 drives the umbrella wheel 14 and umbrella wheel 2 15, and the upper gear set 11 to rotate forward through the universal joint 18. The upper gear set 11 causes the upper fixing part 9 of the coil spring 8 to rotate forward, and the lower gear set 12 causes the lower fixing part 10 of the coil spring 8 to rotate backward. When the curtain is pre-installed into the roller 7, the spring 8 is adjusted to its elasticity and inserted into the roller 7. The elasticity of the spring 8 causes the upper gear set 11 and the lower gear set 12 to generate opposing forces. The elasticity generated by the spring 8 causes the roller 7 to drive the curtain 17 to roll back. The force of the roller 7 driving the curtain 17 to roll back and the force generated by the rope winder 20 pulling the pull cord 16 and pull cord 244 to move the moving frame 6 are a pair of opposite forces. The stable tension formed by this opposite force ensures the smooth operation of the curtain 17. When it is necessary to retract the curtain, the motor 21 is rotated in the opposite direction, the rope winder 20 releases the pull cord 16, and the spring 8 drives the roller 7 to roll back the curtain 17.

[0080] When the pull cord suddenly breaks, the pull cord wheel frame 24 returns to its original position under the action of the torsion spring 28, and hits the limit switch 27, causing the motor 21 to stop. The pawl 25 also returns to its original position, locking the ratchet 26. This will keep one end of the upper gear 11 connected to the upper fixing part 9 of the coil spring 8 stationary. The roller 7 connected to one end of the lower fixing part 10 of the coil spring 8 will roll back the curtain 17 under the action of the coil spring 8. This will prevent the situation where the pull cord breaks and cannot be rolled back, and solve the problem of the curtain getting stuck and unable to be retracted after the pull cord suddenly breaks.

[0081] In the event of an unexpected jam, the upper gear set 11 will stop moving. When the roller 7 rewinds the curtain 17, it will move the rotating lever 36 to the 90-degree position, causing the protruding lever 37 to lock the upper gear set 11. Although the upper gear set 11 remains stationary, the roller 7 can still pull the curtain open thanks to the elasticity of the coil spring 8. After the pull cord 16 is readjusted, the rotating lever 36 can be rotated back to its original position.

[0082] The curtain can be operated manually or electrically, but is generally operated electrically. In case of power failure, it can be manually controlled. To operate manually, simply pull the moving frame 6. The moving frame 6 moves the curtain 17, which in turn moves the roller 7. The roller 7 moves the lower gear set 12, which in turn moves the upper gear set 11 using the spring force of the coil spring 8. The upper gear set 11, through the umbrella wheel 15, umbrella wheel 14, universal joint 18, and drive shaft 19, drives the rope winder 20 to rotate and wind up the pull line 16, thereby pulling out the curtain 17. To close manually, simply push the moving frame 6 to retract the curtain.

[0083] Example 2

[0084] like Figure 3 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 15 , Figure 16 , Figure 17 , Figure 18 , Figure 19 , Figure 20 , Figure 21 , Figure 22As shown, the manual / automatic double-opening door curtain, when in use, includes an upper frame 1, a lower frame 2, a left frame 3, a right frame 4, two movable frames 6, two pull cords 16, two pull cords 44, two rollers 7, two rope winders 20, a motor 21, two drive shafts 19, two lead screws 23, two universal joints 18, a base 13, two umbrella wheels 14, two umbrella wheels 15, two upper gear sets 11, two lower gear sets 12, bearing seats 45, bearings 46, a fixing seat 47, and a curtain fabric 17. The upper frame 1 houses the motor 21, which is fixed to the base 13 via the fixing seat 47. The base 13 is fixed within the upper frame 1. The left side of the motor 21 is connected to one end of the drive shaft 19, which is connected to the bearing 46. The bearing 46 is connected to the bearing seat 45. The bearing seat 45 is connected and fixed to the base 13 in the upper frame 1. The bearing 46 on the bearing seat 45 allows the drive shaft 19 to rotate freely. The other end of the drive shaft 19 passes through the rope winder 20 and the lead screw 23 and is connected to the universal joint 18. The lead screw 23 is fixed to the bearing seat 45. The universal joint 18 is connected to the umbrella wheel 14. The umbrella wheel 14 is connected to the umbrella wheel 15. The umbrella wheel 15 is connected to the upper gear set 11. The roller 7 is installed in the left frame 3. The curtain 17 is installed on the roller 7 and is connected to the left movable frame 6. The roller 7 is installed inside the roller 7. The upper part of the roller 8 is provided with an upper fixing member 9, which is connected to the upper gear set 11. The lower part of the roller 8 is provided with a lower fixing member 10, which is fixed to the roller 7. The roller 7 is connected to the lower gear set 12. Spring 8 is pre-installed into the roller 7 with adjusted elasticity. The elasticity of spring 8 causes the upper gear set 11 and the lower gear set 12 to form opposite forces. The elasticity generated by spring 8 causes the roller 7 to drive the curtain 17 to roll back. Motor 21 drives the rope winder 20 to rotate through drive shaft 19. Rope winder 20 is connected to one end of pull cable 16. The other end of pull cable 16 passes through pull wheel 41 and is connected to the lower part of moving frame 6. One end of pull cable 24 passes through pull wheel 41 and is connected to the upper part of moving frame. The other end of pull cable 24 is connected to pull cable 16 through fixing block 43. Pull cable 16 and pull cable 244 drive the left moving frame 6 to move. The right side of motor 21 also has the same structure as the left side. The right side of motor is connected to one end of right drive shaft 19. Drive shaft 19 is connected to bearing 46. Bearing 46 is connected to bearing seat 45, and bearing seat 45 is connected to base 13 and fixed in upper frame 1. Bearing 46 on bearing seat 45 allows drive shaft 19 to rotate freely. The other end of drive shaft 19 passes through rope winder 20 and lead screw 23 and is connected to universal joint 18. Lead screw 23 is fixed to bearing seat 45. Universal joint 18 is connected to parasol wheel one 14. Parasol wheel one 14 is connected to parasol wheel two 15. Parasol wheel two 15 is connected to upper gear set 11. Roller 7 is installed in right frame 4. Curtain 17 is installed on roller 7 and connected to right movable frame 6. Roller spring 8 is installed inside roller 7. Upper fixing part 9 is provided on the upper part of roller spring 8 and connected to upper gear set 11. Lower fixing part 10 is provided on the lower part of roller spring 8 and fixed together with roller 7.The roller 7 is connected to the lower gear set 12. The spring 8 is pre-installed into the roller 7 with adjusted elasticity. The elasticity of the spring 8 causes the upper gear set 11 and the lower gear set 12 to form opposite forces. The elasticity generated by the spring 8 causes the roller 7 to drive the curtain 17 to roll back. The motor 21 drives the rope winder 20 to rotate through the transmission shaft 19. The rope winder 20 is connected to one end of the pull wire 16. The other end of the pull wire 16 passes through the pull wheel 41 and is connected to the lower part of the moving frame 6. One end of the pull wire 24 passes through the pull wheel 41 and is connected to the upper part of the moving frame 6. The other end of the pull wire 24 is connected to the pull wire 16 through the fixing block 43. The pull wire 16 and the pull wire 244 drive the right moving frame 6 to move. The elastic force generated by the coil spring 8 causes the roller 7 to roll back the curtain 17. The force of the roller 7 rolling back the curtain 17 and the force generated by the rope winder 20 pulling the pull cord 16 and pull cord 244, which in turn moves the moving frame 6, are opposite forces. This opposite force creates a stable tension that ensures the flatness of the curtain 17. Regardless of thermal expansion or contraction of the curtain 17 or the extension of pull cords 16 and 244, the force remains consistent. This opposite force creates a force balance, allowing the curtain to be stopped at any desired point.

[0085] The two rope winders 20 are connected to their respective nuts 22. Each rope winder 20 can move left and right on its connected lead screw 23 via the threads on its respective nut 22. This left-right movement of the rope winders 20 ensures that the pull line 16 can be smoothly wound around the rope winder 20 without tangling. The two drive shafts 19 drive the two rope winders 20, thereby rotating their respective nuts 22. For every rotation of the nut 22, the rope winder 20 shifts by one thread pitch.

[0086] Ratchets 26 are respectively installed on the left and right drive shafts 19.

[0087] The upper frame 1 houses a pull-line wheel frame base 51. A rotating shaft 40 is mounted on the pull-line wheel frame 51, connecting the pull-line wheel frame 24 and a torsion spring 28. A pull-line wheel 41 is mounted on the pull-line wheel frame 24. The pull-line wheel frame base 51 also includes a limit switch 27 and a pawl 25. One end of the pull-line 16 passes through the pull-line wheel 41 and connects to the rope winder 20. When the pull-line 16 is taut, the pull-line wheel frame 24 rotates via the rotating shaft 40 and contacts the pawl 25, causing the pawl 25 to separate from the ratchet 26. When the pull cord 24 leaves the limit switch 27, the curtain is in the open position. When the pull cord 16 suddenly breaks, the pull cord puller 24 returns to its original position under the action of the torsion spring 28, hitting the limit switch 27 and stopping the motor 21. The pawl 25 also returns to its original position, locking the ratchet 26. This keeps one end of the upper gear set 11 connected to the upper fixing part 9 of the coil spring 8 stationary. The roller 7 connected to one end of the lower fixing part 10 of the coil spring 8 will then roll back the curtain 17 under the action of the coil spring, preventing the pull cord from breaking and failing to roll back. The use of a large-headed and small-headed rope winder 20, which is synchronized with the change in thickness of the roller 7, ensures that the curtain maintains a certain elasticity every time it is opened and closed, regardless of the number of times it is run. The coil spring 8 does not participate in the operation and always maintains a certain elasticity, preventing elasticity attenuation and ensuring the lifespan of the coil spring 8. Only when the pull cord 16 suddenly breaks will the elasticity be released, and the coil spring 8 will drive the roller 7 to roll back the curtain 17.

[0088] Each of the two upper gear sets 11 and the lower gear set 12 is equipped with a lever bracket 42, on which a rotating lever 37 is mounted. One of the gears in the lower gear set 12 is equipped with a protruding lever 36. In case of unexpected jamming, the protruding lever 36 and the rotating lever 37 will connect to resolve the jamming problem. When the pull cable 16 suddenly breaks, the protruding lever 36 jams the upper gear set 11 and stops it from moving. When the roller 7 rewinds the curtain 17, it will turn the rotating lever 37 to the 90-degree position, thus breaking the connection. Although the upper gear set 11 cannot rotate and the motor stops running, the moving frame 6 can still manually pull out the curtain. The rewinding relies on the rewinding force of the coil spring 8. After the pull cable 16 is readjusted, the rotating lever 37 can be rotated back to its original position.

[0089] Both of the two rope winders 20 are equipped with pull grooves 33, which are tapered designs with different ends. Since the curtain 17 is rolled on the roller 7, the thickness of the roller 7 changes when the curtain is unfolded and retracted. Therefore, the pull grooves 33 on the rope winder 20 are tapered designs with different ends to match the consistent change in the thickness of the roller 7. This ensures that the spring force of the coil spring 8 in the roller 7 remains constant, and the operating pull force does not fluctuate.

[0090] The upper frame 1 is equipped with a curtain upper track 34 and a movable frame upper track 48, and the lower frame 2 is equipped with a curtain lower track 35 and a movable frame lower track 49. The two movable frames 6 move between the movable frame upper track 48 and the movable frame lower track 49. The curtain 17 moves between the curtain upper track 34 and the curtain lower track 35 to keep the curtain 17 flat. A spring sheet 50 is installed on the curtain upper track 34 to keep the curtain 17 under certain tension and run smoothly under thermal expansion and contraction or tightening. The two curtains 17 are respectively connected to the movable frames 6 on the left and right sides, and move between the curtain upper track 34 and the curtain lower track 35 as the movable frames 6 move.

[0091] The left frame 3 and the right frame 4 are provided with upper slide rails 52 and lower slide rails 53 at their upper and lower ends. The two rollers 7 are provided with pulleys 29 at their upper and lower parts. The pulleys 29 are connected to the upper slide rails 52 and lower slide rails 53. In this way, the rollers 7 can move within a certain range, so that the curtain on the rollers 7 always runs on the upper curtain track 34 and the lower curtain track 35, thus ensuring the life of the curtain 17.

[0092] The two upper gear sets 11, the lower gear set 12, the parachute wheel one 14 and the parachute wheel two 15 are all mounted on their respective gear frames 32. The two gear frames 32 are mounted on the upper part of the left frame 3 and the right frame 4. The gear frames 32 are also equipped with pulleys 29, which are connected to the upper slide rail 52.

[0093] The heights of the roller 7 and the spring 8 can be adjusted arbitrarily according to the heights of the curtain 17 and the door frame.

[0094] The outer cover 5 installed on the upper frame 1 can protect the equipment installed in the upper frame 1 and is aesthetically pleasing.

[0095] The upper frame 1 is equipped with a sensor 38 and a mosquito and fly repellent device 39. The sensor 38 detects a person and opens the curtain; it closes when the person leaves. However, mosquitoes and flies may enter when the curtain is open; the mosquito and fly repellent device is installed to prevent this. The curtain is completely closed from top to bottom and left to right. When closed, dust, snakes, rats, and other insects are kept out and prevented from entering the room.

[0096] Working Principle: After the curtain is installed, when it needs to be pulled up, the motor 21 is started via remote control. 21 drives two drive shafts 19 to rotate, which in turn drives two rope winders 20 on the left and right sides, thereby rotating their respective connected nuts 22. The rope winders 20 can move left and right on the screw 23 through the threads on the nuts 22. Each rotation of the nut 22 corresponds to a corresponding shift of one thread pitch in the rope winder 20. The two pull cords 16 are smoothly wound around their respective rope winders 20 without tangling. The two drive shafts 19 drive the rope winders 20 to wind around one end of their respective pull cords 16, thereby driving the pull cords 16 and 44 to pull the left and right moving frames 6, pulling the curtain fabric 17 from the roller 7. The two drive shafts 19, through their respective universal joints 18, drive the umbrella wheels 14 and 15, and the upper gear set 11 to rotate forward. The upper gear set 11 causes the fixing part 9 on the coil spring 8 to rotate forward, and the lower gear set 12 causes... The lower fixing part 10 of the coil spring 8 reverses. The two coil springs 8, pre-installed into their respective rollers 7 with adjusted elasticity, are then inserted into their respective rollers 7. The elasticity of the coil spring 8 causes the upper gear set 11 and the lower gear set 12 to generate opposing forces. The elasticity generated by the coil spring 8 causes the rollers 7 to drive the curtain 17 back. The force of the rollers 7 driving the curtain 17 back and the force generated by the rope winder 20 pulling the pull cord 16 and pull cord 44, which in turn moves the moving frame 6, are a pair of opposing forces. This opposing force creates a stable tension that ensures the smooth operation of the curtain 17. When it is necessary to retract the curtains on both sides, the motor 21 rotates in the opposite direction. The two rope winders 20 release their respective connected pull cords 16, and the two coil springs 8 drive the rollers 7 to retract the curtain 17, thus completing the process.

[0097] The elastic force generated by the coil spring 8 causes the roller 7 to drive the curtain 17 back. The force of the roller 7 driving the curtain 17 back and the force generated by the rope winder 20 pulling the pull cord 16 and pull cord 44 to move the moving frame 6 are a pair of opposing forces. The stable tension formed by this opposing force ensures the smooth operation of the curtain 17. When it is necessary to retract the curtain, the motor 21 rotates in the opposite direction, the rope winder 20 releases the pull cord 16, and the roller 7 winds the curtain 17 back.

[0098] When the pull cord suddenly breaks, the pull cord wheel frame 24 returns to its original position under the action of the torsion spring 28, and hits the limit switch 27, causing the motor 21 to stop. The pawl 25 also returns to its original position, locking the ratchet 26. This will keep one end of the upper gear 11 connected to the upper fixing part 9 of the coil spring 8 stationary. The roller 7 connected to one end of the lower fixing part 10 of the coil spring 8 will roll back the curtain 17 under the action of the coil spring 8. This will prevent the situation where the pull cord breaks and cannot be rolled back, and solve the problem of the curtain getting stuck and unable to be retracted after the pull cord suddenly breaks.

[0099] In the event of an unexpected jam, the upper gear set 11 will stop moving. When the roller 7 rewinds the curtain 17, it will move the rotating lever 36 to the 90-degree position, causing the protruding lever 37 to lock the upper gear set 11. Although the upper gear set 11 remains stationary, the roller 7 can still pull the curtain open thanks to the elasticity of the coil spring 8. After the pull cord 16 is readjusted, the rotating lever 36 can be rotated back to its original position.

[0100] The curtain can be operated manually or automatically, but is generally used in automatic mode. In case of power failure, it can be manually controlled. To control it manually, simply pull the left and right movable frames 6. The movable frames 6 drive the curtain 17, which in turn drives the roller 7. The roller 7 drives the lower gear set 12, which in turn drives the upper gear set 11 using the elasticity of the coil spring 8. The upper gear set 11 drives the rope winder 20 to rotate and wind up the pull cord 16 through the umbrella wheel 2 15, umbrella wheel 1 14, universal joint 18 and drive shaft 19, thereby pulling out the curtain 17. To close it manually, simply push the movable frames 6 to retract the curtain.

[0101] Example 3

[0102] like Figure 1 , Figure 2 , Figure 6 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15 , Figure 16 , Figure 17 , Figure 18 , Figure 19 , Figure 20 , Figure 21 , Figure 22As shown, in the manual / automatic integrated curtain drag chain movement method, when the installation environment requirements of the lower frame 2 are low, the bottom rail 30 can be used instead of the lower frame 2, and the drag chain 31 is adopted. The drag chain 31 and the pull line cooperate to push and pull the moving frame 6. The manual / automatic integrated curtain drag chain movement method includes an upper frame 1, a bottom rail 30, a left frame 3, a right frame 4, a moving frame 6, a pull line 16, a pull line 24, a roller 7, a rope winder 20, a motor 21, a drive shaft 19, a lead screw 23, a universal joint 18, a base 13, a parasol wheel 14, a parasol wheel 2 15, an upper gear set 11, a lower gear set 12, a bearing seat 45, a bearing 46, a fixed seat 47, a drag chain 31, and a curtain fabric 17. The upper frame 1 is provided with a drive shaft 19, which is connected to a bearing 46. The bearing 46 is connected to a bearing seat 45, and the bearing seat 45 is connected to the base 13 and fixed in the upper frame 1. The bearing 46 on the bearing seat 45 allows the drive shaft 19 to rotate freely. The drive shaft 19 is connected at one end to the motor 21, which is fixed to the base 13 via a fixing seat 47. The base 13 is fixed in the upper frame 1. The other end of the drive shaft 19 passes through the rope winder 20 and the lead screw 23 and is connected to the universal joint 18. The lead screw 23 is fixed to the bearing seat 45. The universal joint 18 is connected to the first parasol wheel 14, which is connected to the second parasol wheel 15, which is connected to the upper gear set 11. A roller 7 is installed in the left frame 3, and a curtain 17 is installed on the roller 7. The curtain 17 is connected to the movable frame 6. A coil spring 8 is installed inside the roller 7. An upper fixing member 9 is provided on the upper part of the coil spring 8, which is connected to the upper gear set 11. A lower fixing member 10 is provided on the lower part of the coil spring 8. The lower fixing part 10 is fixed together with the roller 7. The roller 7 is connected to the lower gear set 12. The coil spring 8 is pre-installed into the roller 7 with adjusted elasticity. The elasticity of the coil spring 8 causes the upper gear set 11 and the lower gear set 12 to form opposite forces. The elasticity generated by the coil spring 8 causes the roller 7 to drive the curtain 17 to roll back. The motor 21 drives the rope winder 20 to rotate through the transmission shaft 19. The rope winder 20 is connected to one end of the pull cable 16. The other end of the pull cable 16 passes through the pull wheel 41 and is connected to one end of the drag chain 31. The other end of the drag chain 31 is fixed to both ends of the bottom rail 30. One end of the pull cable 24 passes through the pull wheel 41 and is connected to the upper part of the moving frame. The other end of the pull cable 24 is connected to the pull cable 16. 6 is connected by a fixed block 43. Pull cord 16 and drag chain drive the lower part of the moving frame 6 to move, and pull cord 24 drives the upper part of the moving frame 6 to move. The elastic force generated by the coil spring 8 causes the roller 7 to drive the curtain 17 to roll back. The force of the roller 7 driving the curtain 17 to roll back and the force formed by the rope winder 20 pulling pull cord 16, drag chain 31 and pull cord 244 to drive the moving frame 6 are a pair of opposite forces. The stable tension formed by this opposite force ensures the flatness of the curtain 17. No matter if the curtain 17 expands or contracts due to heat or if pull cord 16 and pull cord 24 are extended, the force can be kept consistent. This opposite force forms a force balance, so it can be stopped at any time when it needs to be pulled.

[0103] The rope winder 20 is connected to the nut 22. The rope winder 20 can move left and right on the lead screw 23 through the thread on the nut 22. The left and right movement of the rope winder 20 is to ensure that the pull line 16 can be smoothly wound on the rope winder 20 without getting tangled. The drive shaft 19 drives the rope winder 20, which in turn drives the nut 22 to rotate. For every rotation of the nut 22, the rope winder 20 will move one thread pitch accordingly.

[0104] A ratchet 26 is mounted on the drive shaft 19.

[0105] The upper frame 1 houses a pull-line wheel frame base 51. A rotating shaft 40 is mounted on the pull-line wheel frame 51, connecting the pull-line wheel frame 24 and a torsion spring 28. A pull-line wheel 41 is mounted on the pull-line wheel frame 24. The pull-line wheel frame base 51 also includes a limit switch 27 and a pawl 25. One end of the pull-line 16 passes through the pull-line wheel 41 and connects to the rope winder 20. When the pull-line 16 is taut, the pull-line wheel frame 24 rotates via the rotating shaft 40 and contacts the pawl 25, causing the pawl 25 to separate from the ratchet 26. When the pull cord 24 leaves the limit switch 27, the curtain is in the open position. When the pull cord 16 suddenly breaks, the pull cord puller 24 returns to its original position under the action of the torsion spring 28, hitting the limit switch 27 and stopping the motor 21. The pawl 25 also returns to its original position, locking the ratchet 26. This keeps one end of the upper gear set 11 connected to the upper fixing part 9 of the coil spring 8 stationary. The roller 7 connected to one end of the lower fixing part 10 of the coil spring 8 will then roll back the curtain 17 under the action of the coil spring, preventing the pull cord from breaking and failing to roll back. The use of a large-headed and small-headed rope winder 20, which is synchronized with the change in thickness of the roller 7, ensures that the curtain maintains a certain elasticity every time it is opened and closed, regardless of the number of times it is run. The coil spring 8 does not participate in the operation and always maintains a certain elasticity, preventing elasticity attenuation and ensuring the lifespan of the coil spring 8. Only when the pull cord 16 suddenly breaks will the elasticity be released, and the coil spring 8 will drive the roller 7 to roll back the curtain 17.

[0106] A lever frame 42 is provided between the upper gear set 11 and the lower gear set 12. A rotating lever 37 is installed on the lever frame 42. One of the gears in the lower gear set 12 is equipped with a protruding lever 36. In case of unexpected jamming, the protruding lever 36 and the rotating lever 37 will connect to resolve the jamming problem. When the pull cable 16 suddenly breaks, the protruding lever 36 jams the upper gear set 11 and stops it from moving. When the roller 7 rewinds the curtain 17, it will turn the rotating lever 37 to the 90-degree position, thus breaking the connection. Although the upper gear set 11 cannot rotate and the motor stops running, the moving frame 6 can still manually pull out the curtain. The rewinding relies on the rewinding force of the coil spring 8. After the pull cable 16 is readjusted, the rotating lever 37 can be rotated back to its original position.

[0107] The cord reel 20 is provided with a cord groove 33, which is a tapered design with different ends. Since the curtain 17 is rolled on the roller 7, the thickness of the roller 7 changes when the curtain is unfolded and retracted. Therefore, the cord groove 33 on the cord reel 20 is a tapered design with different ends to match the change in the thickness of the roller 7. This ensures that the spring force of the coil spring 8 in the roller 7 remains constant, and the operating tension does not fluctuate.

[0108] The upper frame 1 is equipped with an upper curtain track 34 and a lower movable frame track 48, and the lower frame 2 is equipped with a lower curtain track 35 and a lower movable frame track 49. The movable frame 6 moves between the upper movable frame track 48 and the lower movable frame track 49, and the curtain 17 moves between the upper curtain track 34 and the lower curtain track 35 to keep the curtain 17 flat. A spring sheet 50 is installed on the upper curtain track 34 to keep the curtain 17 under certain tension and run smoothly under thermal expansion and contraction or tightening. The curtain 17 is connected to the movable frame 6 and moves between the upper curtain track 34 and the lower curtain track 35 as the movable frame 6 moves.

[0109] The left frame 3 is provided with an upper slide rail 52 and a lower slide rail 53 at its upper and lower ends. The upper and lower parts of the roller 7 are provided with pulleys 29, which are connected to the upper slide rail 52 and the lower slide rail 53. In this way, the roller 7 moves within a certain range, so that the curtain on the roller 7 always runs on the upper curtain track 34 and the lower curtain track 35, thus ensuring the life of the curtain.

[0110] The upper gear set 11, the lower gear set 12, the parachute wheel 14 and the parachute wheel 2 15 are mounted on the gear frame 32. The gear frame 32 is mounted on the upper part of the left frame 3. The gear frame 32 is also provided with a pulley 29, which is connected to the upper slide rail 52.

[0111] The heights of the roller 7 and the spring 8 can be adjusted arbitrarily according to the heights of the curtain 17 and the door frame.

[0112] The outer cover 5 installed on the upper frame 1 can protect the equipment installed in the upper frame 1 and is aesthetically pleasing.

[0113] The upper frame 1 is equipped with a sensor 38 and a mosquito and fly repellent device 39. The sensor 38 detects a person and opens the curtain; it closes when the person leaves. However, mosquitoes and flies may enter when the curtain is open; the mosquito and fly repellent device is installed to prevent this. The curtain is completely closed from top to bottom and left to right. When closed, dust, snakes, rats, and other insects are kept out and prevented from entering the room.

[0114] Working principle: After the curtain is installed, when it needs to be pulled up, the motor 21 is started via remote control. 21 drives the drive shaft 19 to rotate, which in turn drives the rope winder 20, which in turn drives the nut 22 to rotate. The rope winder 20 can move left and right on the screw 23 through the thread on the nut 22. For every rotation of the nut 22, the rope winder 20 will move by one pitch. Pull cord 16 is smoothly wound on the rope winder 20 without tangling. The drive shaft 19 drives the rope winder 20 to wind around one end of pull cord 16. One end of pull cord 16 is connected to the drag chain 31, and the other end of the drag chain 31 is fixed to one end of the bottom rail 30. This drives pull cord 16 and pull cord 24 to pull the moving frame 6, pulling the curtain 17 out of the roller 7. Pull cord 244 pulls the upper part of the moving frame 6, and pull cord 16 is connected to the drag chain 31, which drives the lower part of the moving frame 6 to move. This method can be used when the installation requirements of the lower frame 2 are relatively low. The drive shaft 19 drives the umbrella wheel 14, umbrella wheel 2 15, and upper gear set 11 to rotate forward via the universal joint 18. The upper gear set 11 causes the upper fixing part 9 of the coil spring 8 to rotate forward, while the lower gear set 12 causes the lower fixing part 10 of the coil spring 8 to rotate in reverse. The coil spring 8 is pre-installed into the roller 7 with adjusted elasticity. The elasticity of the coil spring 8 causes the upper gear set 11 and the lower gear set 12 to form opposite forces. The elasticity generated by the coil spring 8 causes the roller 7 to drive the curtain 17 to roll back. The force of the roller 7 driving the curtain 17 to roll back and the force formed by the rope winder 20 pulling the pull cord 16 and pull cord 2 44 to move the moving frame 6 are a pair of opposite forces. The stable tension formed by this opposite force ensures the smooth operation of the curtain 17. When it is necessary to retract the curtain, the motor 21 rotates in reverse, the rope winder 20 releases the pull cord 16, and the roller 7 rolls back the curtain 17.

[0115] When the pull cord suddenly breaks, the pull cord wheel frame 24 returns to its original position under the action of the torsion spring 28, and hits the limit switch 27, causing the motor 21 to stop. The pawl 25 also returns to its original position, locking the ratchet 26. This will keep one end of the upper gear 11 connected to the upper fixing part 9 of the coil spring 8 stationary. The roller 7 connected to one end of the lower fixing part 10 of the coil spring 8 will roll back the curtain 17 under the action of the coil spring 8. This will prevent the situation where the pull cord breaks and cannot be rolled back, and solve the problem of the curtain getting stuck and unable to be retracted after the pull cord suddenly breaks.

[0116] In the event of an unexpected jam, the upper gear set 11 will stop moving. When the roller 7 rewinds the curtain 17, it will move the rotating lever 36 to the 90-degree position, causing the protruding lever 37 to lock the upper gear set 11. Although the upper gear set 11 remains stationary, the roller 7 can still pull the curtain open thanks to the elasticity of the coil spring 8. After the pull cord 16 is readjusted, the rotating lever 36 can be rotated back to its original position.

[0117] The door curtain can be operated manually or automatically, but it is generally used in automatic mode. In case of power failure, it can be manually controlled. To control it manually, simply pull the moving frame 6. The moving frame 6 drives the curtain 17, which in turn drives the roller 7. The roller 7 drives the lower gear set 12, which in turn drives the upper gear set 11 using the elasticity of the coil spring 8. The upper gear set 11 drives the rope winder 20 to rotate and wind up the pull cord 16 through the umbrella wheel 2 15, umbrella wheel 1 14, universal joint 18 and drive shaft 19, thereby pulling up the door curtain. To close it manually, simply push the moving frame 6 to retract the door curtain.

[0118] The above describes the single-door configuration of cable chain 31. The cable chain can also be designed as a double-door configuration as needed. The double-door configuration is based on embodiment two, with the lower pull cord and cable chain connected in the same way as the single-door curtain. It can be manufactured as needed.

[0119] The above description is an embodiment of this utility model and is not intended to limit the utility model. Various improvements and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A manual / automatic integrated door curtain, comprising an upper frame (1), a lower frame (2), a left frame (3), a right frame (4), a movable frame (6), a pull cord one (16), a pull cord two (44), a roller (7), a rope winder (20), a motor (21), a drive shaft (19), a lead screw (23), a universal joint (18), a base (13), a parasol wheel one (14), a parasol wheel two (15), an upper gear set (11), a lower gear set (12), a bearing seat (45), a bearing (46), a fixed seat (47), and a curtain fabric (17), characterized in that: The upper frame (1) is provided with a drive shaft (19), which is connected to a bearing (46). The bearing (46) is connected to a bearing seat (45), and the bearing seat (45) is connected to a base (13) and fixed in the upper frame (1). One end of the drive shaft (19) is connected to a motor (21), and the motor (21) is fixed to the base (13) through a fixing seat (47). The base (13) is fixed in the upper frame (1). The other end of the drive shaft (19) passes through a rope winder (20), a lead screw (23), and is connected to a universal joint (18). 3) Fixed to the bearing seat (45), the universal joint (18) is connected to the parasol wheel one (14), the parasol wheel one (14) is connected to the parasol wheel two (15), the parasol wheel two (15) is connected to the upper gear set (11), the roller (7) is installed in the left frame (3), the curtain (17) is installed on the roller (7), the curtain (17) is connected to the movable frame (6), the coil spring (8) is installed in the roller (7), the upper part of the coil spring (8) is provided with an upper fixing part (9), the upper fixing part (9) is connected to the upper gear set (11), the lower part of the coil spring (8) is provided with a lower fixing part (1). 0), the lower fixing part (10) is fixed together with the roller (7), the roller (7) is connected to the lower gear set (12), the coil spring (8) is pre-installed into the roller (7) with the spring force adjusted, the spring force of the coil spring (8) causes the upper gear set (11) and the lower gear set (12) to form a positive and negative force, the spring force generated by the coil spring (8) causes the roller (7) to drive the curtain (17) to roll back, the rope winder (20) is connected to one end of the pull line (16), the other end of the pull line (16) passes through the pull wheel (41) and the moving frame (6) The lower part is connected, one end of the pull wire 2 (44) passes through the pull wire wheel (41) and is connected to the upper part of the moving frame (6). The other end of the pull wire 2 (44) is connected to the pull wire 1 (16) through the fixing block (43). The pull wire 1 (16) and the pull wire 2 (44) drive the moving frame (6) to move. The force of the roller (7) driving the curtain (17) to roll back and the force formed by the rope winder (20) pulling the pull wire 1 (16) and the pull wire 2 (44) driving the moving frame (6) to move are a pair of opposite forces. The tension formed by the opposite forces ensures the flatness of the curtain (17).

2. The manual / automatic integrated door curtain according to claim 1, characterized in that: The rope winder (20) is connected to the nut (22). The rope winder (20) can move left and right on the screw (23) through the thread on the nut (22). The left and right movement of the rope winder (20) is to ensure that the pull line (16) can be smoothly wound on the rope winder (20) without getting tangled. The drive shaft (19) drives the rope winder (20) to rotate, thereby driving the nut (22) to rotate. For every rotation of the nut (22), the rope winder (20) will move by one pitch.

3. The manual / automatic integrated door curtain according to claim 1, characterized in that: A ratchet (26) is installed on the drive shaft (19), and a pull-line wheel frame base (51) is installed in the upper frame (1). A rotating shaft (40) is installed on the pull-line wheel frame base (51), and the rotating shaft (40) connects the pull-line wheel frame (24) and the torsion spring (28). A pull-line wheel (41) is installed on the pull-line wheel frame (24). A limit switch (27) and a pawl (25) are also provided on the pull-line wheel frame base (51). One end of the pull line (16) passes through the pull-line wheel (41) and is connected to the rope winder (20). When the pull line (16) is in a taut state, the pull-line wheel frame (24) rotates through the rotating shaft (40) and touches the pawl (25). When the pawl (25) and ratchet (26) separate, the pull wheel frame (24) also leaves the limit switch (27), and the curtain is in the open state. When the pull line (16) suddenly breaks, the pull wheel frame (24) returns to its original position under the action of the torsion spring (28), touches the limit switch (27), and stops the motor (21). The pawl (25) also returns to its original position and locks the ratchet (26). This will cause one end of the upper gear set (11) connected to the upper fixing part (9) of the coil spring (8) to remain stationary. The roller (7) connected to one end of the lower fixing part (10) of the coil spring (8) will roll back the curtain (17) under the action of the coil spring (8).

4. The manual / automatic integrated door curtain according to claim 1, characterized in that: A lever frame (42) is provided between the upper gear set (11) and the lower gear set (12). A rotating lever (37) is installed on the lever frame (42). One of the gears of the lower gear set (12) is equipped with a protruding lever (36). When an unexpected jam occurs, the jamming problem is solved by connecting the protruding lever (36) and the rotating lever (37). When the pull line (16) suddenly breaks, the protruding lever (36) jams the upper gear set (11) and stops it. At the same time, the roller (7) rolls back the curtain (17) and moves the rotating lever (37) to the 90° position. At this time, the connection is broken, the upper gear set (11) cannot rotate, the motor (21) stops running, and the moving frame (6) manually pulls out the curtain (17). When rewinding, the rewinding force of the coil spring (8) rewinds synchronously. After the pull line (16) is readjusted, the rotating lever (37) can be rotated back to its original position.

5. The manual / automatic integrated door curtain according to claim 1, characterized in that: The rope winder (20) is provided with a pull groove (33), which is a tapered design with different sized ends.

6. The manual / automatic integrated door curtain according to claim 1, characterized in that: The upper frame (1) is equipped with a curtain upper track (34) and a movable frame upper track (48), and the lower frame (2) is equipped with a curtain lower track (35) and a movable frame lower track (49). The movable frame (6) moves between the movable frame upper track (48) and the movable frame lower track (49), and the curtain (17) moves between the curtain upper track (34) and the curtain lower track (35). A spring sheet (50) is installed on the curtain upper track (34), and the curtain (17) is connected to the movable frame (6). As the movable frame (6) moves, it moves between the curtain upper track (34) and the curtain lower track (35).

7. The manual / automatic integrated door curtain according to claim 1, characterized in that: The left frame (3) is provided with an upper slide rail (52) and a lower slide rail (53) at both the upper and lower ends. The upper and lower parts of the roller (7) are provided with pulleys (29). The pulleys (29) are connected to the upper slide rail (52) and the lower slide rail (53) so that the roller (7) can move within a certain range and the curtain on the roller (7) always runs on the upper curtain track (34) and the lower curtain track (35).

8. The manual / automatic integrated door curtain according to claim 1, characterized in that: The upper gear set (11), the lower gear set (12), parachute wheel one (14) and parachute wheel two (15) are mounted on the gear frame (32). The gear frame (32) is mounted on the upper part of the left frame (3). The gear frame (32) is also provided with a pulley (29), which is connected to the upper slide rail (52).

9. The manual / automatic integrated door curtain according to claim 1, characterized in that: The upper frame (1) is equipped with an outer cover (5), a sensor probe (38), and a mosquito and fly repellent device (39).

10. The manual / automatic integrated door curtain according to claim 1, characterized in that: When the installation environment requirements of the lower frame (2) are low, the lower frame (2) can be replaced by the bottom rail (30) and the drag chain (31) can be used to move the frame (6) by pushing and pulling with the drag chain (31) and the pull line.

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