Gear synchronous quick-release rewinding screen door

Abstract

The utility model relates to the technical field of rollback screen doors, in particular to a gear synchronous quick-release rollback screen door, which comprises an upper rail, a lower rail, a push-pull component, a rollback component and a fixing component, the fixing assembly comprises an upper fixing plate, a lower fixing plate, an upper cover and a lower cover. The upper end of the rewinding assembly is fixedly connected with the upper fixing plate, and the lower end of the rewinding assembly is fixedly connected with the lower fixing plate. The upper fixing plate and the upper cover are detachably connected through the first clamping part and the second clamping part, and the upper cover is fixedly connected to the upper rail. The lower fixing plate is detachably connected with the lower cover through the third clamping part and the fourth clamping part, and the lower cover is fixedly connected with the lower rail. When the rewinding assembly needs to be detached, the rewinding assembly, the upper fixing plate and the lower fixing plate are integrally pulled outwards in the horizontal direction, the upper fixing plate can slide out of the upper cover, the lower fixing plate can slide out of the lower cover, and therefore the rewinding assembly, the upper fixing plate and the lower fixing plate are integrally separated from the door body and detached, the installation and detachment efficiency is high, operation is convenient, and cleaning is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of rewinding screen doors, in particular to a gear-synchronized quick-detachable rewinding screen door. Background Art

[0002] Screens are installed on doors and windows to achieve ventilation and air exchange between the inside and outside of the house. At the same time, it can prevent foreign objects (mosquitoes, catkins, etc.) from entering the room, and can improve safety, such as preventing children from climbing and falling, and objects from falling from high altitudes. Rewinding screen doors are screen windows with automatically rewinding screens. They are mainly used for ventilation and mosquito prevention. The frame is tightly attached to the window frame. When it is needed, the screen is pulled down. When not in use, the screen will automatically rewind into the mesh box. It does not take up space and has strong sealing properties, which is coordinated with high-end home decoration. If the winding shaft of existing rewinding screen doors and windows needs to be disassembled for cleaning, the entire window body needs to be disassembled, and then the winding shaft needs to be disassembled for cleaning. Installation and disassembly are troublesome and inefficient. Utility Model Content

[0003] In order to solve the technical defects mentioned in the above background technology, the purpose of the present utility model is to provide a gear-synchronized quick-release rewinding screen door.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A gear-synchronized quick-release rewinding screen door, comprising an upper rail, a lower rail, a push-pull assembly transmission-connected between the upper rail and the lower rail, a rewinding assembly for rewinding the screen, and a fixing assembly for connecting the upper rail, the lower rail, and the rewinding assembly; the fixing assembly comprises an upper fixing plate, a lower fixing plate, an upper cover, and a lower cover; one end of the upper fixing plate is fixedly connected to the upper end of the rewinding assembly, and the other end of the upper fixing plate is in close contact with the end surface of the upper rail; the lower fixing plate is fixedly connected to the lower end of the rewinding assembly; the other end of the lower fixing plate The end is in close contact with the end surface of the lower rail; the upper surface of the upper fixed plate is provided with a first clamping portion, and the lower surface of one end of the upper cover is provided with a second clamping portion clamped with the first clamping portion; the other end of the upper cover is inserted into the upper rail; the lower surface of the lower fixed plate is provided with a third clamping portion, and the upper surface of one end of the lower cover is provided with a fourth clamping portion clamped with the third clamping portion, and the other end of the lower cover is inserted into the lower rail; the first clamping portion and the third clamping portion are both slidably arranged along the length direction perpendicular to the upper rail.

[0006] By adopting the above technical solution, the upper end of the rewind assembly is fixedly connected to the upper fixed plate, and the lower end of the rewind assembly is fixedly connected to the lower fixed plate. The upper fixed plate and the upper cover are detachably connected by the first clamping portion and the second clamping portion, and the upper cover is fixedly connected to the upper rail. The lower fixed plate and the lower cover are detachably connected by the third clamping portion and the fourth clamping portion, and the lower cover is fixedly connected to the lower rail. When the rewind assembly needs to be disassembled, the rewind assembly, the upper fixed plate, and the lower fixed plate are pulled outward horizontally as a whole, and the upper fixed plate can slide out of the upper cover and the lower fixed plate can slide out of the lower cover, so that the rewind assembly, the upper fixed plate, and the lower fixed plate are separated and disassembled from the door body as a whole, with high installation and disassembly efficiency, convenient operation, and more convenient cleaning.

[0007] Furthermore, the upper fixed plate includes a fixing portion and a sealing portion. The fixing portion is connected to the upper end of the rewind assembly, and the upper surface of the fixing portion is provided with a card slot for installing the upper cover, and the first card portion is provided at the proximal end of the sliding direction of the fixing portion. The surface area of ​​the first card portion on one side of the card slot is smaller than the surface area of ​​the other side of the first card portion, so that the first card portion cooperates with the bottom of the card slot to form a card connection area, which has a simple structure, saves costs, and is more stable. The upper cover is slidably provided in the card slot, and the second card portion is clamped in the card connection area. The sealing portion is sealed and connected to the end face of the upper rail to improve the sealing and quieting effects.

[0008] Furthermore, the lower surface of the upper cover is provided with a guide frame, the outer periphery of which is in close contact with the inner side of the slot, thereby improving the stability of the relative sliding between the upper cover and the upper fixed plate and the efficiency of assembly and disassembly. The upper cover is provided with an open groove relative to the first clamping portion, and the upper end of the first clamping portion is located within the groove. The second clamping portion is configured as a U-shaped plate structure, and the outer periphery of the second clamping portion is integrally formed with the guide frame, improving the stability of the overall structure.

[0009] Furthermore, the upper cover is provided with a sealing portion above the sealing portion. The sealing portion covers the upper portion of the sealing portion, and one end of the sealing portion protruding from the sealing portion is inserted into the upper rail to fix the upper rail and the upper cover, thereby reducing space occupation and making installation more convenient.

[0010] Furthermore, a plurality of mounting grooves connected to the upper rail are provided below the sealing portion to extend the installation length of the rack and the sealing strip in the upper rail, thereby improving the sealing performance and extending the length of the rail for greater compatibility.

[0011] Furthermore, the structure of the first clamping portion is mirrored to that of the third clamping portion, and the structure of the second clamping portion is mirrored to that of the fourth clamping portion, thereby saving costs.

[0012] Furthermore, the gear-synchronized quick-release rewinding screen door also includes a first frame. The rewinding assembly is arranged in the first frame. A yarn inlet and outlet channel for yarn outlet is provided in the height direction of the side of the first frame facing the push-pull assembly. The first frame is provided with a first fixing member and a second fixing member; the yarn inlet and outlet channel is formed between the first fixing member and the second fixing member. A first clamping block and a second clamping block are provided on the side of the upper fixing plate and the lower fixing plate facing the first frame. The first clamping block is clamped on the first fixing member, and the second clamping block is clamped on the second fixing member, which makes installation and disassembly faster.

[0013] Furthermore, the first fixing member is configured as an elongated structure, with a through square channel provided inside the first fixing member, and the first clamping block is configured as a directional structure to be engaged with the square channel. The second fixing member is configured as a through trapezoidal channel provided inside the second fixing member, and the second clamping block is configured as a trapezoidal structure to be engaged with the trapezoidal channel. This structure is simple, occupies less space, and makes the entire door frame more compact.

[0014] Furthermore, the push-pull assembly includes a pull rod, a first rack, a second rack, and two gears. The first rack is mounted on the upper rail, and the second rack is mounted within the lower rail. A gear is mounted at each end of the pull rod, meshing with the corresponding first or second rack, allowing for easy pulling and stopping. During the push-pull process, the pull rod does not fall or tilt, providing enhanced stability. The pull rod is connected to the gauze within the rewind assembly.

[0015] In summary, the beneficial effects of the present invention are:

[0016] The utility model is characterized in that the upper end of the rewinding assembly is fixedly connected to the upper fixed plate, and the lower end of the rewinding assembly is fixedly connected to the lower fixed plate. The upper fixed plate and the upper cover are detachably connected by the first clamping portion and the second clamping portion, and the upper cover is fixedly connected to the upper rail. The lower fixed plate and the lower cover are detachably connected by the third clamping portion and the fourth clamping portion, and the lower cover is fixedly connected to the lower rail. When the rewinding assembly needs to be disassembled, the rewinding assembly, the upper fixed plate, and the lower fixed plate are pulled outward horizontally as a whole, and the upper fixed plate can slide out of the upper cover and the lower fixed plate can slide out of the lower cover, so that the rewinding assembly, the upper fixed plate, and the lower fixed plate are separated from the door body as a whole and disassembled, with high installation and disassembly efficiency, convenient operation, and more convenient cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a structural diagram of an embodiment of a gear-synchronized quick-detachable retractable screen door.

[0018] Figure 2 The utility model is a schematic diagram of the exploded structure of an embodiment of the gear-synchronized quick-detachable retractable screen door.

[0019] Figure 3 The utility model is a schematic diagram of the exploded structure of an embodiment of a fixing assembly of a gear-synchronized quick-release retractable screen door.

[0020] Figure 4 The utility model is a structural schematic diagram of an embodiment of an upper fixing plate of a gear-synchronized quick-detachable rewinding screen door.

[0021] Figure 5 The utility model is a structural schematic diagram of an embodiment of the lower cover of the gear-synchronized quick-detachable retractable screen door.

[0022] Figure 6 It is an enlarged schematic diagram of an embodiment of the first frame of the gear-synchronized quick-detachable rewinding screen door of the present invention.

[0023] Figure 7 It is a structural diagram of an embodiment of the internal connection of the gear-synchronized quick-release rewinding screen door of the present invention.

[0024] Figure 8 yes Figure 7 Top view of .

[0025] Figure 9 yes Figure 8 Schematic diagram of the cross-sectional structure of AA.

[0026] Description of reference numerals in the figures:

[0027] 1. Gear-synchronized quick-release rewinding screen door; 2. Upper rail; 3. Lower rail; 4. Push-pull assembly; 41. Pull rod; 42. First rack; 43. Second rack; 44. Gear; 45. Slide; 46. Guide wheel assembly; 5. Rewind assembly; 51. Adjusting screw; 6. Fixing assembly; 61. Upper fixing plate; 611. First clamping portion; 612. Fixing portion; 613. Sealing portion; 614. Mounting slot; 615. Clamping slot; 616. Clamping area; 62. Lower fixing plate; 6 21. Third clamping part; 63. Upper cover; 631. Second clamping part; 632. Guide frame; 633. Groove; 634. Covering part; 64. Lower cover; 641. Fourth clamping part; 642. Lap plate; 643. Support bar; 65. First clamping block; 66. Second clamping block; 7. First frame; 71. Yarn inlet and outlet channel; 72. First fixing piece; 721. Square channel; 73. Second fixing piece; 731. Trapezoidal channel; 8. Second frame; 9. Sealing piece. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0029] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms cannot be understood as limiting the present invention.

[0030] In the description of this utility model, if the word "several" or "several" is used, it means one or more, and "more" means two or more. "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of the words "first," "second," and "third" is only for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, or implicitly indicating the number of the indicated technical features, or implicitly indicating the order of the indicated technical features.

[0031] The following is combined with Figure 1-9 , the embodiments of the utility model are further described in detail.

[0032] A gear-synchronized quick-release rewinding screen door 1, such as Figure 1 、 Figure 2 、 Figure 3As shown, it includes an upper rail 2, a lower rail 3, a push-pull assembly 4 that is transmission-connected between the upper rail 2 and the lower rail 3, a rewinding assembly 5 for rewinding the gauze, and a fixing assembly 6 for connecting the upper rail 2, the lower rail 3, and the rewinding assembly 5. The fixing assembly 6 includes an upper fixing plate 61, a lower fixing plate 62, an upper cover 63, and a lower cover 64. One end of the upper fixing plate 61 is fixedly connected to the upper end of the rewinding assembly 5, and the other end of the upper fixing plate 61 is in close contact with the end surface of the upper rail 2. The lower fixing plate 62 is fixedly connected to the lower end of the rewinding assembly 5. The other end of the lower fixing plate 62 is in close contact with the end surface of the lower rail 3. A first clamping portion 611 is provided on the upper surface of the upper fixing plate 61, and a second clamping portion 631 that is clamped to the first clamping portion 611 is provided on the lower surface of one end of the upper cover 63. The other end of the upper cover 63 is inserted into the upper rail 2. The lower surface of the lower fixing plate 62 is provided with a third engaging portion 621. The upper surface of one end of the lower cover 64 is provided with a fourth engaging portion 641 that engages with the third engaging portion 621. The other end of the lower cover 64 is inserted into the lower rail 3. The first engaging portion 611 and the third engaging portion 621 are both slidably arranged in a direction perpendicular to the length of the upper rail 2.

[0033] Among them, the upper end of the rewind assembly 5 is fixedly connected to the upper fixed plate 61, and the lower end of the rewind assembly 5 is fixedly connected to the lower fixed plate 62. The upper fixed plate 61 and the upper cover 63 are detachably connected by the first clamping portion 611 and the second clamping portion 631, and the upper cover 63 is fixedly connected to the upper rail 2. The lower fixed plate 62 and the lower cover 64 are detachably connected by the third clamping portion 621 and the fourth clamping portion 641, and the lower cover 64 is fixedly connected to the lower rail 3. When the rewind assembly 5 needs to be disassembled, the rewind assembly 5, the upper fixed plate 61, and the lower fixed plate 62 are pulled outward horizontally as a whole, and the upper fixed plate 61 can slide out of the upper cover 63, and the lower fixed plate 62 can slide out of the lower cover 64, so that the rewind assembly 5, the upper fixed plate 61, and the lower fixed plate 62 are separated from the door body as a whole and disassembled, with high installation and disassembly efficiency, convenient operation, and more convenient cleaning.

[0034] In this embodiment, please refer to Figure 2 、 Figure 3 、 Figure 4The upper fixed plate 61 includes a fixing portion 612 and a sealing portion 613. The fixing portion 612 is connected to the upper end of the rewind assembly 5. The upper surface of the fixing portion 612 is provided with a card slot 615 for installing the upper cover 63. The first card portion 611 is provided at the proximal end of the sliding direction of the fixing portion 612. The surface area of ​​the first card portion 611 on one side of the card slot 615 is smaller than the surface area of ​​the other side of the first card portion 611, so that the first card portion 611 cooperates with the bottom of the card slot 615 to form a card area 616, which has a simple structure, saves costs, and is more stable. The upper cover 63 is slidably set in the card slot 615, and the second card portion 631 is clamped in the card area 616. The width of the fixing portion 612 is wider than the width of the sealing portion 613. The sealing portion 613 is sealed and connected to the end face of the upper rail 2, thereby improving the sealing and silent effects.

[0035] The lower surface of the upper cover 63 is provided with a guide frame 632. The outer periphery of the guide frame 632 is in close contact with the inner side of the retaining groove 615, improving the stability of the relative sliding between the upper cover 63 and the upper fixing plate 61 and the efficiency of assembly and disassembly. The upper cover 63 is provided with an open groove 633 at a position opposite the first retaining portion 611. The upper end of the first retaining portion 611 is located within the groove 633. The second retaining portion 631 is configured as a U-shaped plate structure. The outer periphery of the second retaining portion 631 is integrally formed with the guide frame 632, improving the stability of the overall structure.

[0036] The upper cover 63 is provided with a cover portion 634 above the sealing portion 613. The cover portion 634 covers the upper portion of the sealing portion 613, and one end of the cover portion 634 protruding from the sealing portion 613 is inserted into the upper rail 2 to fix the upper rail 2 and the upper cover 63, reducing the occupied space and making installation more convenient.

[0037] Below the sealing portion 613, multiple mounting slots 614 are provided, communicating with the upper rail 2. This allows for the rack and sealing strip within the upper rail 2 to be installed, improving sealing performance while also extending the rail's length and enhancing compatibility. Specifically, both the sealing strip and the first rack 42 can extend into the mounting slots 614, increasing the clearance for the door opening, making it more convenient to use, and enhancing compatibility.

[0038] In some embodiments, please refer to Figure 2 、 Figure 3 The structure of the first clamping portion 611 is mirrored with the structure of the third clamping portion 621, the structure of the second clamping portion 631 is mirrored with the structure of the fourth clamping portion 641, and the structure of the upper fixing plate 61 is mirrored with the structure of the lower fixing plate 62, thereby saving costs. For details, please refer to the above-mentioned relevant content.

[0039] Please refer to Figure 5The lower cover 64 is provided with a lap plate 642 at one end protruding from the lower fixing plate 62. The upper surface of the lap plate 642 is higher than the upper surface of the lower fixing plate 62, which can limit and guide the lower fixing plate 62. The lap plate 642 is inserted into the lower rail 3 to fix the entire lower cover 64. The upper surface of the lap plate 642 is provided with multiple support bars 643 at intervals along the length of the lower rail 3. The support bars 643 can increase the bearing strength of the lap plate 642 and extend its service life. The structure of the sealing portion 613 is consistent with that of the lap plate 642.

[0040] In this embodiment, please refer to Figure 2 、 Figure 6 The gear-synchronized quick-release rewinding screen door 1 also includes a first frame 7. The rewinding assembly 5 is arranged in the first frame 7. A yarn inlet and outlet channel 71 for yarn outlet is provided in the height direction of the side of the first frame 7 facing the push-pull assembly 4. The first frame 7 is provided with a first fixing member 72 and a second fixing member 73. The yarn inlet and outlet channel 71 is formed between the first fixing member 72 and the second fixing member 73. A first clamping block 65 and a second clamping block 66 are provided on the side of the upper fixing plate 61 and the lower fixing plate 62 facing the first frame 7. The first clamping block 65 is clamped on the first fixing member 72, and the second clamping block 66 is clamped on the second fixing member 73, which makes installation and disassembly faster.

[0041] Specifically, the first fixing member 72 is configured as an elongated structure, with a through square channel 721 provided therein. The first clamping block 65 is configured as a directional structure to engage within the square channel 721. The second fixing member 73 is configured as a through trapezoidal channel 731, and the second clamping block 66 is configured as a trapezoidal structure to engage within the trapezoidal channel 731. This facilitates quick fixing of the first frame 7 between the upper and lower fixing plates 61, 62. The structure is simple, takes up less space, and makes the entire door frame more compact. Furthermore, when installing and removing the rewind assembly 5, the first and second clamping blocks 65, 66 enable the first frame 7 to synchronously drive the upper and lower fixing plates 61, 62, and the rewind assembly 5 to slide in sync.

[0042] The first frame 7 is provided with a through hole at the adjusting screw 51 of the rewinding assembly 5 to expose the adjusting screw 51 so that the user can adjust the rewinding speed of the gauze mesh by himself.

[0043] In this embodiment, please refer to Figure 2 、 Figure 7 、 Figure 8 、 Figure 9The push-pull assembly 4 includes a pull rod 41, a first rack 42, a second rack 43, and two gears 44. The first rack 42 is mounted on the upper rail 2, and the second rack 43 is mounted on the lower rail 3. A gear 44 is mounted on each end of the pull rod 41. The gears 44 mesh with the corresponding first rack 42 or second rack 43, allowing for easy pulling and stopping. During the push-pull process, the pull rod 41 does not fall or tilt, providing enhanced stability. The pull rod 41 is connected to the gauze within the rewind assembly 5.

[0044] In order to improve the efficiency and portability of pushing and pulling, a slide 45 can be set at both ends of the pull rod 41, and a guide wheel group 46 is set on the side of the slide 45 facing the upper rail 2 or the lower rail 3. The guide wheels of the guide wheel group 46 are slidably connected with the corresponding upper rail 2 or lower rail 3 to reduce friction resistance.

[0045] During assembly, the first frame 7 is mounted on the outer periphery of the rewind assembly 5. The first and second blocks 65 and 66 of the upper and lower fixed plates 61 and 62 are aligned with the square channel 721 and the trapezoidal channel 731, respectively, to initially secure them to the first frame 7. The upper and lower fixed plates 61 and 62 are each securely connected to the first frame 7 by screws. Next, the first rack 42 and the sealing strip are installed into the upper rail 2, and the second rack 43 and the sealing strip are installed into the lower rail 3. The gears 44 at both ends of the pull rod 41 are respectively installed into the upper rail 2 and the lower rail 3, so that the gears 44 engage with the first rack 42 or the second rack 43. Then, the second frame 8 is sealed to the ends of the upper and lower rails 2 and 3 away from the rewind assembly 5, respectively, via two sealing members 9. Then, the cover portion 634 of the upper cover 63 is inserted into the upper rail 2 to secure the upper cover 63, and the lap plate 642 of the lower cover 64 is inserted into the lower rail 3. Finally, the assembled upper fixing plate 61, first frame 7, rewinding assembly 5, and lower fixing plate 62 are pushed together to seal the connection between the upper rail 2 and the lower rail 3. The first engaging portion 611 is engaged with the second engaging portion 631, and the third engaging portion 621 is engaged with the fourth engaging portion 641.

[0046] To remove the rewind assembly 5, the upper fixing plate 61, first frame 7, rewind assembly 5, and lower fixing plate 62 are pulled out as a whole, the first engaging portion 611 is separated from the second engaging portion 631, and the third engaging portion 621 is separated from the fourth engaging portion 641. After removing the upper fixing plate 61, lower fixing plate 62, and first frame 7, the rewind assembly 5 can be cleaned.

[0047] This gear-synchronized quick-release rewinding screen door 1 can be quickly disassembled and assembled for cleaning through hardware accessories. It has stable quality, is beautiful and practical, can be used as a balcony door, entrance door, or sea view room hall, has high ventilation and light transmittance, is easy and quick to install, and the user can adjust the rewinding speed by himself.

[0048] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A gear-synchronized quick-release rewinding screen door (1), comprising an upper rail (2), a lower rail (3), a push-pull assembly (4) transmission-connected between the upper rail (2) and the lower rail (3), a rewinding assembly (5) for rewinding a screen, and a fixing assembly (6) for connecting the upper rail (2), the lower rail (3), and the rewinding assembly (5); characterized in that: The fixing assembly (6) comprises an upper fixing plate (61), a lower fixing plate (62), an upper cover (63) and a lower cover (64); one end of the upper fixing plate (61) is fixedly connected to the upper end of the rewinding assembly (5), and the other end of the upper fixing plate (61) is in close contact with the end surface of the upper rail (2); the lower fixing plate (62) is fixedly connected to the lower end of the rewinding assembly (5); the other end of the lower fixing plate (62) is in close contact with the end surface of the lower rail (3); the upper surface of the upper fixing plate (61) is provided with a first clamping portion (611), and the lower end of one end of the upper cover (63) is fixedly connected to the upper end of the rewinding assembly (5); the other end of the lower fixing plate (62) is in close contact with the end surface of the lower rail (3); the upper surface of the upper fixing plate (61) is provided with a first clamping portion (611), and the lower end of one end of the upper cover (63) is fixedly connected to the upper end of the rewinding assembly (5). A second clamping portion (631) is provided on the surface thereof and is clamped with the first clamping portion (611); the other end of the upper cover (63) is inserted into the upper rail (2); a third clamping portion (621) is provided on the lower surface of the lower fixed plate (62); a fourth clamping portion (641) is provided on the upper surface of one end of the lower cover (64) and is clamped with the third clamping portion (621); the other end of the lower cover (64) is inserted into the lower rail (3); the first clamping portion (611) and the third clamping portion (621) are both slidably arranged along a length direction perpendicular to the upper rail (2).

2. The gear-synchronized quick-release rewinding screen door (1) according to claim 1, characterized in that: The upper fixed plate (61) includes a fixing portion (612) and a sealing portion (613), the fixing portion (612) is connected to the upper end of the rewinding assembly (5), the upper surface of the fixing portion (612) is provided with a card slot (615) for installing the upper cover (63), and the first card portion (611) is provided at the proximal end of the sliding direction of the fixing portion (612); the surface area of ​​the first card portion (611) on one side of the card slot (615) is smaller than the surface area of ​​the other side of the first card portion (611), so that the first card portion (611) cooperates with the bottom of the card slot (615) to form a card area (616); the upper cover (63) is slidably provided in the card slot (615), and the second card portion (631) is clamped in the card area (616); the sealing portion (613) is sealed and connected to the end face of the upper rail (2).

3. The gear-synchronized quick-release rewinding screen door (1) according to claim 2, characterized in that: The upper cover (63) includes a lower surface provided with a guide frame (632), and the outer peripheral side of the guide frame (632) is in close contact with the inner side of the card slot (615); the upper cover (63) is provided with an open groove (633) relative to the first card portion (611), and the upper end of the first card portion (611) is located in the groove (633); the second card portion (631) is set as a U-shaped plate structure, and the peripheral side of the second card portion (631) is integrally formed with the guide frame (632).

4. The gear-synchronized quick-release rewinding screen door (1) according to claim 2, characterized in that: The upper cover (63) is provided with a sealing portion (634) above the sealing portion (613), and the sealing portion (634) covers the upper portion of the sealing portion (613). One end of the sealing portion (634) protruding from the sealing portion (613) is inserted into the upper rail (2) to fix the upper rail (2) and the upper cover (63).

5. The gear-synchronized quick-release rewinding screen door (1) according to claim 2, characterized in that: A plurality of installation grooves (614) communicating with the upper rail (2) are provided below the sealing portion (613) to extend the installation length of the rack and the sealing strip in the upper rail (2).

6. The gear-synchronized quick-release rewinding screen door (1) according to claim 1, characterized in that: The structure of the first clamping portion (611) is mirrored to the structure of the third clamping portion (621), and the structure of the second clamping portion (631) is mirrored to the structure of the fourth clamping portion (641).

7. The gear-synchronized quick-release rewinding screen door (1) according to claim 1, characterized in that: The gear-synchronized quick-release rewinding screen door (1) further comprises a first frame (7), wherein the rewinding assembly (5) is arranged in the first frame (7); a yarn inlet and outlet channel (71) for discharging yarn is arranged in a height direction on a side of the first frame (7) facing the push-pull assembly (4); the first frame (7) is provided with a first fixing member (72) and a second fixing member (73); the yarn inlet and outlet channel (71) is formed between the first fixing member (72) and the second fixing member (73); a first clamping block (65) and a second clamping block (66) are both provided on a side of the upper fixing plate (61) and the lower fixing plate (62) facing the first frame (7), wherein the first clamping block (65) is clamped on the first fixing member (72), and the second clamping block (66) is clamped on the second fixing member (73).

8. The gear-synchronized quick-release rewinding screen door (1) according to claim 7, characterized in that: The first fixing member (72) is configured as a long strip structure, a through square channel (721) is provided inside the first fixing member (72), and the first clamping block (65) is configured as a directional structure to be clamped in the square channel (721); the second fixing member (73) is configured as a through trapezoidal channel (731), and the second clamping block (66) is configured as a trapezoidal structure to be clamped in the trapezoidal channel (731).

9. The gear-synchronized quick-release rewinding screen door (1) according to claim 1, characterized in that: The push-pull assembly (4) includes a pull rod (41), a first rack (42), a second rack (43) and two gears (44); the first rack (42) is arranged on the upper rail (2), the second rack (43) is arranged in the lower rail (3), and a gear (44) is provided at both ends of the pull rod (41), and the gear (44) is meshed and connected with the corresponding first rack (42) or second rack (43); the pull rod (41) is connected to the gauze in the rewinding assembly (5).

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