A broken bridge aluminum door and window with hidden screen

Abstract

The utility model discloses a kind of broken bridge aluminium door and window with hidden screen, including winding box, winding box side is equipped with cover, cover side is equipped with fixing device, fixing device includes fixed sleeve, release block, release sleeve, fixed block, release slot, fixed slot and fixed rod, fixed block is connected in release block side, release slot is opened in release sleeve inside, fixed slot is opened in fixed rod outside, fixed sleeve outside is provided with reinforcing mechanism, reinforcing mechanism includes driving wheel, driven wheel, adaptation sleeve, adaptation rod, cylindrical block, sliding block, connecting spring, sliding sleeve and control sleeve, driving wheel is installed in control sleeve side, driven wheel is installed in adaptation sleeve side, adaptation sleeve is sleeved on adaptation rod outside by thread, adaptation rod is connected in sliding sleeve side, multiple cylindrical block is installed in fixed sleeve outside, connecting spring both ends are respectively connected with adjacent two sliding blocks, the utility model solves the problem that screen is difficult to replace in the prior art and the unstable problem of quick replacement design structure.

Description

Technical Field

[0001] This utility model relates to the field of thermally broken aluminum doors and windows technology, and more specifically, it relates to a thermally broken aluminum door and window with a concealed screen. Background Technology

[0002] In modern building window and door systems, thermally broken aluminum windows and doors have become a widely adopted choice for residential and commercial buildings due to their excellent thermal insulation performance, beautiful and elegant appearance design, and outstanding sealing performance. However, the screen system, an important component of thermally broken aluminum windows and doors, faces many technical challenges in practical applications, which seriously affect user experience and product lifespan.

[0003] In existing thermally broken aluminum window and door technology with concealed screens, over time, the screens inevitably suffer damage from various external factors such as sun and rain, wind impact, insect strikes, and human pulling, leading to aging, loosening, breakage, and even perforation. This wear rate accelerates significantly, especially during the peak summer season. However, when users are forced to replace the screens, the existing installation and removal mechanisms present significant inconvenience. Traditional screen replacement typically requires complete disassembly of the window and door frame, or at least removal of specific frame components. This process not only requires the use of… The use of various specialized tools such as screwdrivers, wrenches, and pliers, along with the requirement for operators to possess certain mechanical disassembly and assembly knowledge and skills, makes it almost impossible for ordinary users to replace screens independently. They are forced to seek help from professional repair personnel, resulting in additional time and financial costs. Furthermore, due to the complexity of the disassembly process, improper operation may lead to deformation of the door and window frames or scratches on the surface, causing irreparable damage to the entire door and window system. This high difficulty and high risk of screen replacement cause many users to choose to tolerate or delay replacement when faced with damaged screens, ultimately resulting in the loss of mosquito-proof function and a decline in indoor environmental quality, seriously affecting living comfort and quality of life.

[0004] Secondly, driven by market demand, some manufacturers have indeed launched screen designs with quick-replacement functions in an attempt to solve the aforementioned technical problems. However, because thermally broken aluminum windows and doors are frequently opened and closed during daily use, each opening and closing operation generates varying degrees of vibration and impact. These forces are gradually transmitted to the screen's fixing structure. Under long-term cumulative effects, the structure is prone to loosening and deformation. More seriously, once the fixing structure becomes loose, the screen may generate severe vibration and noise under the action of wind, not only affecting the quietness of living but also accelerating the damage rate of the screen itself. In extreme cases, the loose screen may even fall off completely, losing its basic function of preventing mosquitoes and insects, and may also cause fright or minor injury to people indoors due to sudden detachment, especially posing a potential safety hazard to children and the elderly. In addition, structural loosening may also cause gaps between the screen and the window / door frame, providing an entry channel for mosquitoes and insects, completely violating the original intention of installing the screen. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the problems existing in the prior art, this utility model provides a thermally broken aluminum window and door with a hidden screen to solve the technical problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a thermally broken aluminum window and door with a concealed screen, comprising a roll-up box, a detachable cover on one side of the roll-up box, and a fixing device installed on one side of the cover. The fixing device includes a fixing sleeve, a release block, a release sleeve, a fixing block, a release groove, a fixing groove, and a fixing rod. The fixing sleeve is detachably fitted onto the outside of the fixing rod. The release block is slidably disposed in the release groove. The release sleeve is rotatably mounted on the outside of the fixing sleeve. The fixing block is fixedly connected to one side of the release block. The fixing block is snapped into the fixing groove. The release groove is opened on the inside of the release sleeve, and the fixing groove is opened on the outside of the fixing rod. A reinforcing mechanism is provided on the outside of the fixed sleeve. The reinforcing mechanism includes a driving wheel, a driven wheel, an adapter, an adapter rod, a cylindrical block, a slider, a connecting spring, a sliding sleeve, and a control sleeve. The driving wheel is fixedly installed on one side of the control sleeve. Multiple driven wheels mesh with the driving wheel. The driven wheel is fixedly installed on one side of the adapter. The adapter is movably sleeved on the outside of the adapter rod via a thread. The adapter rod is fixedly connected to one side of the sliding sleeve. Multiple cylindrical blocks are fixedly installed on the outside of the fixed sleeve. The slider is movably disposed on one side of the release sleeve. The two ends of the connecting spring are respectively connected to two adjacent sliders. The sliding sleeve is slidably disposed on the outside of the fixed sleeve. The control sleeve is rotatably installed on the outside of the fixed sleeve.

[0009] The present invention is further configured such that a fixed shaft is fixedly provided in the winding box, a rotating sleeve is rotatably provided on the outside of the fixed shaft, a slot is provided on the inside of the rotating sleeve, a mesh is wound on the outside of the rotating sleeve, a locking block is connected to one end of the mesh and the locking block is inserted into the slot, a locking plate is connected to the other end of the mesh and the locking plate is located below the winding box, a clearance groove is provided at the bottom of the winding box, and one end of the fixed shaft is fixedly connected to the fixed rod.

[0010] The present invention is further configured such that a manual winder is detachably provided on one side of the winding box, and a pull rope is provided on one side of the manual winder, the pull rope being connected to the manual winder.

[0011] The present invention is further provided that a handle is fixedly provided on one side of the card plate.

[0012] The present invention is further configured such that a roller is rotatably provided on one side of the slider, and the roller is engaged between two corresponding fixed blocks.

[0013] The present invention is further configured such that a groove is provided in the slider, and multiple slide rails are fixedly provided on one side of the release sleeve. The groove and the slide rails are adapted to each other, and the arrangement of the groove and the slide rails ensures the precise movement of the slider.

[0014] The present invention is further configured such that a spring is connected to one side of the fixing block, and the other end of the spring is connected to the fixing sleeve. The spring facilitates the control of the position of the fixing block and the release block.

[0015] The present invention is further configured such that an adapter plate is fixedly provided on the outer side of the fixed sleeve, and multiple adapters are rotatably mounted on the adapter plate, the adapter plate providing an installation base for the adapters.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a thermally broken aluminum window and door with a concealed screen, which has the following advantages:

[0018] 1. Through the ingenious combination of a winding box, fixed shaft, rotating sleeve, mesh, locking block, locking slot, locking plate, and manual winding device, a modular design concept is adopted to integrate the mesh and winding mechanism into one unit. The mesh is connected through the precise cooperation of the locking block and locking slot, while the locking plate and handle design at the other end of the mesh ensures convenient operation. When the mesh needs to be used, the user only needs to gently pull the handle to pull the locking plate down to unfold the mesh; when winding, simply pull the pull rope, and the manual winding device will drive the rotating sleeve to rotate, causing the mesh to be smoothly wound along the relief groove. This flexible winding and unwinding design not only improves the convenience of daily use, but also creates the basic conditions for mesh replacement. The overall structure is compact and the operation is intuitive.

[0019] 2. The fixing device innovatively solves the core problem of cumbersome traditional screen replacement by precisely coordinating a fixing sleeve, a release block, a release sleeve, a fixing block, a release groove, a fixing groove, and a fixing rod. This device employs a unique quick-replacement mechanism, a clever design that completely eliminates the tedious steps required by traditional screen replacement methods, such as using screwdrivers and wrenches. This reduces operational difficulty, allowing ordinary users to independently replace the screen within minutes without needing professional repair personnel. The combination of the fixing block and spring not only ensures a smooth installation and removal process but also provides initial stability for the overall structure, effectively preventing the risk of deformation or scratches to the door and window frames during installation and removal. By simplifying the screen replacement process, this fixing device significantly reduces maintenance costs and time investment, encouraging users to replace damaged screens promptly, thereby maintaining indoor comfort and quality of life.

[0020] 3. The reinforcement mechanism, through the coordinated work of the driving wheel, driven wheel, adapter, adapter rod, cylindrical block, slider, connecting spring, sliding sleeve, and control sleeve, creatively solves the key technical defect of insufficient structural stability in existing quick-change screen designs. This mechanism features a unique multi-locking system that maintains high structural stability even under the vibration and impact of frequent opening and closing of doors and windows, effectively preventing loosening, deformation, or detachment of the screen fixing structure. It ensures optimal tightening with each lock. This high-stability design completely solves the safety hazards of easy loosening, noise generation, and detachment in traditional quick-change screens, providing users with a convenient and safe screen usage experience. It effectively extends the lifespan of the screen, improves the practicality and reliability of the overall door and window system, and allows thermally broken aluminum doors and windows to maintain aesthetics and functionality while maximizing maintenance simplicity and safety. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a thermally broken aluminum window and door with a concealed screen in this utility model.

[0022] Figure 2 This is a cross-sectional view of the present invention with the pull rope removed.

[0023] Figure 3 This is a schematic diagram of the dispersed structure of the fixing device and the reinforcement mechanism in this utility model;

[0024] Figure 4 This is a schematic diagram showing the dispersed cross-sectional structure of the fixing device and the reinforcing mechanism in this utility model.

[0025] Figure 5 This is a cross-sectional structural diagram of the fixing device and the reinforcing mechanism in this utility model.

[0026] In the diagram: 1. Rewind box; 2. Cover; 3. Fixing sleeve; 4. Release block; 5. Release sleeve; 6. Fixing block; 7. Release groove; 8. Fixing groove; 9. Fixing rod; 10. Drive wheel; 11. Driven wheel; 12. Adaptor; 13. Adaptor rod; 14. Cylindrical block; 15. Slider; 16. Connecting spring; 17. Sliding sleeve; 18. Control sleeve; 19. Fixing shaft; 20. Rotating sleeve; 21. Slot; 22. Mesh; 23. Locking block; 24. Locking plate; 25. Clearance groove; 26. Manual rewinder; 27. Pull rope; 28. Handle; 29. ​​Roller; 30. Slide groove; 31. Slide rail; 32. Spring; 33. Adaptor plate. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0029] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0030] Please see Figures 1-5A thermally broken aluminum window with a concealed screen includes a retractable roll-up box 1. A cover 2 is detachably mounted on one side of the roll-up box 1. A fixing device is installed on one side of the cover 2. The fixing device includes a fixing sleeve 3, a release block 4, a release sleeve 5, a fixing block 6, a release groove 7, a fixing groove 8, and a fixing rod 9. The fixing sleeve 3 is detachably fitted onto the outside of the fixing rod 9. The release block 4 is slidably disposed in the release groove 7. The release sleeve 5 is rotatably mounted on the outside of the fixing sleeve 3. The fixing block 6 is fixedly connected to one side of the release block 4 and is inserted into the fixing groove 8. The release groove 7 is located inside the release sleeve 5, and the fixing groove 8 is located outside the fixing rod 9. A reinforcing mechanism is provided on the outside of the fixing sleeve 3. The reinforcing mechanism includes a drive wheel 10 and a follower wheel 10. The system includes a driving wheel 11, an adapter 12, an adapter rod 13, a cylindrical block 14, a slider 15, a connecting spring 16, a sliding sleeve 17, and a control sleeve 18. The driving wheel 10 is fixedly installed on one side of the control sleeve 18. Multiple driven wheels 11 mesh with the driving wheel 10. The driven wheels 11 are fixedly installed on one side of the adapter 12. The adapter 12 is movably sleeved on the outside of the adapter rod 13 via a thread. The adapter rod 13 is fixedly connected to one side of the sliding sleeve 17. Multiple cylindrical blocks 14 are fixedly installed on the outside of the fixed sleeve 3. The slider 15 is movably disposed on one side of the release sleeve 5. The two ends of the connecting spring 16 are respectively connected to two adjacent sliders 15. The sliding sleeve 17 is slidably disposed on the outside of the fixed sleeve 3. The control sleeve 18 is rotatably installed on the outside of the fixed sleeve 3.

[0031] A fixed shaft 19 is fixedly installed in the winding box 1. A rotating sleeve 20 is rotatably installed on the outside of the fixed shaft 19. A slot 21 is opened on the inside of the rotating sleeve 20. A mesh 22 is rolled on the outside of the rotating sleeve 20. A locking block 23 is connected to one end of the mesh 22 and is inserted into the slot 21. A locking plate 24 is connected to the other end of the mesh 22. The locking plate 24 is located below the winding box 1. A clearance groove 25 is opened at the bottom of the winding box 1. One end of the fixed shaft 19 is fixedly connected to the fixed rod 9.

[0032] A manual winder 26 is detachably provided on one side of the winding box 1. A pull rope 27 is provided on one side of the manual winder 26, and the pull rope 27 is connected to the manual winder 26.

[0033] A handle 28 is fixedly provided on one side of the card plate 24.

[0034] In this embodiment, when the mesh 22 needs to be rolled up, the pull rope 27 is pulled forward. The pull rope 27 drives the manual winding device 26 to rotate the rotating sleeve 20 outside the fixed shaft 19. Then, the rotating sleeve 20 will drive the mesh 22 to rotate through the slot 21 and the block 23, so that the mesh 22 is gradually rolled up outside the rotating sleeve 20 and moves along the relief groove 25. This causes the other end of the mesh 22 to drive the plate 24 and the handle 28 to rise. When the mesh 22 needs to be lowered, the plate 24 can be pulled down by the handle 28.

[0035] Please see Figures 3-5As a further implementation of the overall device: a roller 29 is provided on one side of the slider 15, and the roller 29 is engaged between two corresponding fixing blocks 6.

[0036] The slider 15 has a groove 30, and the release sleeve 5 has multiple slide rails 31 fixed on one side. The groove 30 is adapted to the slide rails 31.

[0037] A spring 32 is connected to one side of the fixing block 6, and the other end of the spring 32 is connected to the fixing sleeve 3.

[0038] An adapter plate 33 is fixedly provided on the outside of the fixed sleeve 3, and multiple adapters 12 are rotatably installed on the adapter plate 33.

[0039] More specifically, when the mesh 22 needs to be replaced, first rotate the control sleeve 18 forward. The control sleeve 18 drives the drive wheel 10 to rotate forward, causing the drive wheel 10 to drive multiple driven wheels 11 that mesh with it to rotate in the opposite direction. The driven wheels 11 then drive the adapter 12 to rotate in the opposite direction on the adapter plate 33. Since the adapter 12 is movably connected to the adapter rod 13 through threads, the adapter rod 13 will then drive the sliding sleeve 17 to slide, so that the sliding sleeve 17 no longer limits the outer side of the roller 29. Then, rotate the release sleeve 5 forward, causing the release sleeve 5 to drive the slider 15 set on one side to rotate forward through the slide rail 31 and the slide groove 30. Then, the slider 15 will drive the roller 29 set on one side to roll out between the two cylindrical blocks 14. Then, the roller 29 will... The movable slider 15 slides outward along the slide rail 31 and slide groove 30, and the slider 15 drives the connecting spring 16 to stretch outward. At the same time, the release sleeve 5 drives the release groove 7 opened on the inner side to rotate in the forward direction. Then, one side of the inner wall of the release groove 7 pushes the release block 4 to move, so that the release block 4 moves outward in the release groove 7. Then, the release block 4 drives the fixing block 6 to disengage from the fixing groove 8. Then, the fixing block 6 squeezes the spring 32 set on one side, and then pulls the fixing sleeve 3 to one side to remove the fixing sleeve 3. Then, the cover 2 is removed, and then the mesh 22 is pulled out from the winding box 1, so that the mesh 22 drives the locking block 23 to slide out from the locking groove 21, and the mesh 22 drives the locking plate 24 and the handle 28 to be removed. Replace the mesh 22 and install it in its original position on the outside of the rotating sleeve 20. Slide the locking block 23 into the locking groove 21. Then, reinstall the cover 2 at one end of the winding box 1, allowing the fixing rod 9 to pass through the cover 2. Next, re-fit the fixing sleeve 3 onto the outside of the fixing rod 9. Then, rotate the release sleeve 5 in the reverse direction, causing the release groove 7 to rotate in the reverse direction. The inner wall of the release groove 7 gradually stops limiting the release block 4, causing the spring 32 to push the fixing block 6 back into the fixing groove 8. The fixing block 6 will then gradually slide the release block 4 inwards. The spring 32 then returns to its original position, and combined with the limiting action on the inner side of the release groove 7, the release block 4 is limited on both sides. Simultaneously, the release sleeve 5, through the slide rail 31 on one side... The slide groove 30 drives the slider 15 to move back to the original two cylindrical blocks 14. Then, the connecting spring 16 resets and pulls the slider 15 to slide inward along the slide rail 31 and the slide groove 30, so that the slider 15 drives the roller 29 to re-engage between the original two cylindrical blocks 14. Then, the control sleeve 18 rotates in the opposite direction, and the control sleeve 18 drives the active wheel 10 installed on one side to rotate in reverse. Then, the active wheel 10 drives multiple driven wheels 11 and the adapter 12 to rotate in the forward direction. Then, the adapter rod 13 drives the slide sleeve 17 to slide and reset. Then, the inner wall of the slide sleeve 17 limits the outer side of the roller 29 again to prevent the roller 29 and the slider 15 from sliding outward, thereby limiting the rotation of the release sleeve 5, thus ensuring the stability of the installation structure and ensuring the stable use of the mesh 22.

[0040] In summary, when the entire device is in use or running: when it is necessary to rewind the mesh 22, pull the pull rope 27 in the forward direction. The pull rope 27 drives the manual rewinder 26 to rotate the rotating sleeve 20 outside the fixed shaft 19. Then, the rotating sleeve 20 will drive the mesh 22 to rotate through the slot 21 and the block 23, so that the mesh 22 is gradually rewound outside the rotating sleeve 20 and moves along the relief groove 25. This causes the other end of the mesh 22 to drive the plate 24 and the handle 28 to rise. When it is necessary to lower the mesh 22, simply pull the plate 24 down through the handle 28.

[0041] When the mesh 22 needs to be replaced, first rotate the control sleeve 18 forward. The control sleeve 18 drives the drive wheel 10 to rotate forward, causing the drive wheel 10 to drive multiple driven wheels 11 that mesh with it to rotate in the opposite direction. The driven wheels 11 then drive the adapter 12 to rotate in the opposite direction on the adapter plate 33. Since the adapter 12 is movably connected to the adapter rod 13 through threads, the adapter rod 13 will then drive the sliding sleeve 17 to slide, so that the sliding sleeve 17 no longer limits the outer side of the roller 29. Then, rotate the release sleeve 5 forward, causing the release sleeve 5 to drive the slider 15 set on one side to rotate forward through the slide rail 31 and the slide groove 30. Then, the slider 15 will drive the roller 29 set on one side to roll out between the two cylindrical blocks 14. Then, the roller 29 will drive the slider. 15 slides outward along the slide rail 31 and slide groove 30, and the slider 15 will drive the connecting spring 16 to stretch outward. At the same time, the release sleeve 5 will drive the release groove 7 opened on the inner side to rotate in the forward direction. Then, one side of the inner wall of the release groove 7 pushes the release block 4 to move, so that the release block 4 moves outward in the release groove 7. Then, the release block 4 will drive the fixing block 6 to disengage from the fixing groove 8. Then, the fixing block 6 will squeeze the spring 32 set on one side, and then pull the fixing sleeve 3 to one side to remove the fixing sleeve 3. Then, the cover 2 is removed, and then the mesh 22 is pulled out from the winding box 1, so that the mesh 22 drives the locking block 23 to slide out from the locking groove 21, and the mesh 22 drives the locking plate 24 and the handle 28 to be removed. The mesh 22 is replaced and installed in its original position on the outside of the rotating sleeve 20, and the locking block 23 slides into the locking groove 21. Then, the cover 2 is reinstalled on one end of the winding box 1, and the fixing rod 9 passes through the cover 2. Then, the fixing sleeve 3 is re-fitted onto the outside of the fixing rod 9. Then, the release sleeve 5 is rotated in the reverse direction, causing the release sleeve 5 to drive the release groove 7 to rotate in the reverse direction. Then, one side of the inner wall of the release groove 7 gradually stops limiting one side of the release block 4, so that the spring 32 pushes the fixing block 6 to re-lock into the fixing groove 8, and the fixing block 6 will drive the release block 4 to gradually slide inward. Then, the spring 32 returns to its original position, and with the limiting on the inside of the release groove 7, the release block 4 is limited on both sides. At the same time, the release sleeve 5 slides through the slide rail 31 on one side. The groove 30 drives the slider 15 to move back to the original two cylindrical blocks 14. Then the connecting spring 16 resets and pulls the slider 15 to slide inward along the slide rail 31 and the groove 30, so that the slider 15 drives the roller 29 to re-engage between the original two cylindrical blocks 14. Then the control sleeve 18 is rotated in the opposite direction. The control sleeve 18 drives the active wheel 10 installed on one side to rotate in reverse. Then the active wheel 10 drives multiple driven wheels 11 and the adapter 12 to rotate in the forward direction. Then the adapter rod 13 drives the sliding sleeve 17 to slide and reset. Then the inner wall of the sliding sleeve 17 limits the outer side of the roller 29 again to prevent the roller 29 and the slider 15 from sliding outward, thereby limiting the rotation of the release sleeve 5, thus ensuring the stability of the installation structure and ensuring the stable use of the mesh 22.

[0042] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A thermally broken aluminum window and door with a concealed screen, comprising a roll-up box (1), characterized in that: A cover (2) is provided on one side of the winding box (1), and a fixing device is installed on one side of the cover (2). The fixing device includes a fixing sleeve (3), a release block (4), a release sleeve (5), a fixing block (6), a release groove (7), a fixing groove (8), and a fixing rod (9). The fixing block (6) is connected to one side of the release block (4), the release groove (7) is opened inside the release sleeve (5), and the fixing groove (8) is opened outside the fixing rod (9). A reinforcing mechanism is provided on the outside of the fixing sleeve (3). The reinforcing mechanism includes a driving wheel (10), a driven wheel (11), an adapter (12), an adapter rod (13), and a cylindrical block. (14), slider (15), connecting spring (16), sliding sleeve (17) and control sleeve (18), drive wheel (10) is installed on one side of control sleeve (18), driven wheel (11) is installed on one side of adapter (12), adapter (12) is threaded onto the outside of adapter rod (13), adapter rod (13) is connected to one side of sliding sleeve (17), multiple cylindrical blocks (14) are installed on the outside of fixed sleeve (3), slider (15) is set on one side of release sleeve (5), the two ends of connecting spring (16) are respectively connected to two adjacent sliders (15), and control sleeve (18) is installed on the outside of fixed sleeve (3).

2. The thermally broken aluminum window and door with a concealed screen as described in claim 1, characterized in that: A fixed shaft (19) is fixedly provided in the winding box (1). A rotating sleeve (20) is rotatably provided on the outside of the fixed shaft (19). A slot (21) is provided on the inside of the rotating sleeve (20). A mesh (22) is wound on the outside of the rotating sleeve (20). A locking block (23) is connected to one end of the mesh (22). The locking block (23) is inserted into the slot (21). A locking plate (24) is connected to the other end of the mesh (22). The locking plate (24) is located below the winding box (1). A clearance groove (25) is provided at the bottom of the winding box (1). One end of the fixed shaft (19) is fixedly connected to the fixed rod (9).

3. A thermally broken aluminum window and door with a concealed screen as described in claim 2, characterized in that: The winding box (1) is detachably equipped with a manual winding device (26) on one side, and a pull rope (27) is provided on one side of the manual winding device (26), and the pull rope (27) is connected to the manual winding device (26).

4. A thermally broken aluminum window and door with a concealed screen as described in claim 3, characterized in that: A handle (28) is fixedly provided on one side of the card plate (24).

5. A thermally broken aluminum window and door with a concealed screen according to any one of claims 1-4, characterized in that: The slider (15) has a roller (29) on one side that rotates, and the roller (29) is engaged between two corresponding fixing blocks (6).

6. A thermally broken aluminum window and door with a concealed screen as described in claim 5, characterized in that: The slider (15) has a groove (30) and a plurality of slide rails (31) are fixed on one side of the release sleeve (5). The groove (30) is adapted to the slide rails (31).

7. A thermally broken aluminum window and door with a concealed screen as described in claim 1, characterized in that: A spring (32) is connected to one side of the fixing block (6), and the other end of the spring (32) is connected to the fixing sleeve (3).

8. A thermally broken aluminum window and door with a concealed screen as described in claim 7, characterized in that: An adapter plate (33) is fixedly provided on the outside of the fixed sleeve (3), and multiple adapters (12) are rotatably mounted on the adapter plate (33).

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