A concealed folding screen door and window

Abstract

The application discloses a hidden folding screen door and window, which comprises a window frame, an inner flat-opening window sash installed in the window frame, a mounting box fixed to the inner side of the top of the mounting frame, a pull roller rotatably installed in the inner side of the top edge of the mounting box through a torsion spring embedded type, a winding rod connected to one end of the bevel gear transmission assembly, a limiting ring connected to the winding rod through a second ratchet wheel assembly, the limiting ring being arranged on the outer side of the winding rod, a positioning rod slidably installed in the limiting ring through a fourth spring, a push head arranged on the top of the limiting ring, a fixed roller installed at the bottom of the side cavity of the mounting frame through a bearing, and a gear connected to one end of the fixed roller. The hidden folding screen door and window can realize the unfolding and folding of the screen through the opening and closing of the window, avoid the long-term exposure of the screen to the outside to accumulate dust, and reduce the light blocking.

Description

Technical Field

[0001] This invention relates to the field of door and window technology, specifically to a concealed folding screen door and window. Background Technology

[0002] Doors and windows are mainly used in buildings to provide shelter from wind and rain while improving indoor lighting. They are mainly composed of window frames, window sashes, and screens. The screen's function is to block external insects when the door or window is open. However, screens can obstruct light when the window is closed, and some externally mounted screens tend to accumulate dust over time, making them difficult to clean. To address these issues, existing technology has begun using concealed folding screens, which extend when the window is opened and close when the window is closed. However, existing concealed folding screen doors and windows have the following problems in use:

[0003] Existing concealed folding screen doors and windows mostly require manual opening and closing, making it inconvenient to adapt to the movement of the window. When opening and closing the window, the screen needs to be operated again, which is quite troublesome. This is especially true for inward-opening windows, where the window needs to be fully opened each time to operate the screen, resulting in low practicality.

[0004] To address the aforementioned issues, there is an urgent need for innovative designs based on existing concealed folding screen doors and windows. Summary of the Invention

[0005] The purpose of this invention is to provide a concealed folding screen door and window to solve the problem mentioned in the background art that existing concealed folding screen doors and windows are inconvenient to open and close adaptively with the movement of the window. The technical solution of this invention addresses the problem that the existing technical solutions are too simplistic and provides a solution that is significantly different from the existing technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a concealed folding screen door and window, including a window frame, an inwardly opening window sash installed inside the window frame, and an installation frame provided inside the window frame, with the installation frame located on the outer side of the window sash;

[0007] It also includes a mounting box, which is fixed to the top inner side of the mounting frame. A gravity strip is connected to the bottom of the mounting box via a folded mesh. A pull roller is rotatably mounted inside the top edge of the mounting box via an embedded torsion spring. A first pull rope is wound around the pull roller, and one end of the first pull rope is connected to the top edge of the window sash. A mating post is slidably mounted in the bottom cavity of the pull roller via an embedded first spring. A connecting joint is mounted in the bottom cavity of the connecting post via a bearing, and the connecting joint is connected to the connecting post via a first ratchet assembly. A bevel gear transmission assembly is vertically and slidably installed in the bottom cavity of the connector, and the bevel gear transmission assembly is embedded and rotatably installed inside the top edge of the mounting box. One end of the bevel gear transmission assembly is connected to a winding rod, and the winding rod is laterally embedded and rotatably installed in the cavity inside the mounting box via a torsion spring. A limit ring is sleeved on the winding rod via a second ratchet assembly, and a friction head is contacted above the limit ring. The friction head is elastically and slidably installed in the mounting box via a second spring, and the limit ring is rotatably installed in the mounting box via a bearing.

[0008] A sleeve is fitted around the outside of the winding rod and is rotatably mounted in the mounting box via a bearing. A second pull rope is wound around the sleeve, and one end of the second pull rope is connected to the edge of the gravity bar. The edge of the gravity bar slides against the side cavity of the mounting box. A positioning rod is slidably mounted inside the sleeve through a fourth spring, and the inner end of the positioning rod is located in a positioning groove, which is opened at a corresponding position on the outside of the winding rod. A push head is provided on the top of the sleeve and is elastically slidably mounted in the mounting box via a fifth spring.

[0009] A fixed roller is mounted on the bottom of the side cavity of the mounting frame via a bearing. Magnetic strips that attract each other are mounted on the top of the fixed roller and the bottom edge of the gravity strip. One end of the fixed roller is connected to a gear, and a rack meshes with the top of the gear. The rack is mounted on the bottom edge of the mounting frame via a seventh spring, and one end of the rack is located on the outside of the mounting frame.

[0010] Preferably, a crossbar is provided on the side of the docking column, and the crossbar is installed laterally through the mounting box by an adjusting spring, with one end of the crossbar located on the outside of the mounting frame.

[0011] Preferably, one end of the crossbar is designed with a right-angled trapezoidal structure, and one end of the crossbar is located in the cavity on the side of the docking post. The top surface of the cavity on the side of the docking post is inclined and corresponds to the inclined surface at the end of the crossbar. The cavity on the side of the docking post is designed with a ring structure.

[0012] Preferably, the bottom cavity of the connector has a regular octagonal cross-section, and the bottom cavity of the connector is in concave-convex fit with the corresponding position of the top shaft of the bevel gear transmission assembly, and the bevel gear transmission assembly is composed of two meshing bevel teeth.

[0013] Preferably, a release rod is provided on the side of the friction head, and the release rod is installed in the mounting box through a third spring. One end of the release rod is located on the outside of the mounting box. The inner end of the release rod is designed as a right-angled trapezoidal structure and is located in the internal cavity of the friction head. The top surface of the internal cavity of the friction head is inclined and parallel to the inclined position of the top surface of the end of the release rod.

[0014] Preferably, the positioning rods are distributed at equal angles on the sleeve ring, and the outer ends of the positioning rods are provided with rollers, and the number of positioning rods corresponds to the number of positioning grooves.

[0015] Preferably, a push rod is provided on the outer side of the push head, and the push rod is installed in the mounting box through a sixth spring, with one end of the push rod located on the outer side of the mounting box, and the bottom of the push head has an arc-shaped structure design.

[0016] Preferably, the inner end of the push rod is designed as a right-angled trapezoidal structure, and the inner end of the push rod is located in the internal cavity of the push head. Furthermore, the bottom surface of the internal cavity of the push head is inclined and parallel to the inclined position of the bottom surface of the push rod end.

[0017] Preferably, the outer ends of the rack, push rod, release rod, and crossbar are all located on one side of the window sash.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. This invention provides an automatic unfolding mechanism for the folding net. When the window sash is opened, it separates from the push rod. The push rod resets under the action of the sixth spring, causing it to separate from the push head. The push head moves upward under the action of the fifth spring, causing it to separate from the positioning rod. The positioning rod resets under the action of the fourth spring and separates from the positioning groove, causing the sleeve ring to separate from the winding rod. At this time, the position of the sleeve ring is released, and the gravity bar moves downward under its own weight. The second pull rope drives the sleeve ring to rotate, automatically unfolding the folding net. Furthermore, when the window sash opens, it separates from the rack. The rack separates under the action of the seventh spring, causing the fixed roller to rotate. This causes the magnetic strip on the fixed roller to be at the top, attracting the magnetic strip at the bottom of the gravity bar, thus assisting in fixing the position of the gravity bar and completing the automatic unfolding of the folding net. This structure only requires the window sash to open and separate from the push rod and rack, thus there are no many restrictions on the position of the window sash opening, making it highly applicable.

[0020] 2. In this invention, an automatic winding mechanism is provided. When the window sash is opened, it separates from the crossbar and release rod, causing the crossbar and release rod to reset. The end of the crossbar separates from the connecting post, allowing the connecting post to move downward under the action of the first spring. Simultaneously, the opening of the window sash allows the first pull rope to pull the winding roller to rotate. As the connecting post moves downward, the coupling is finally sleeved on the shaft of the bevel gear transmission assembly. Thus, the opening of the window sash drives the winding rod to rotate and store force. The separation of the release rod allows the friction head to move downward under force, compressing and limiting the limit ring. The limit ring, in conjunction with the second ratchet assembly, provides unidirectional limitation for the winding rod, preventing it from rotating in the opposite direction, thereby achieving the function of storing force. Furthermore, when the window sash is closed, the rack, push rod, release rod, and crossbar are compressed, releasing the position of the limit ring and the winding rod. The pressing of the push rod can drive the push head to move downward. As the winding rod rotates, the positioning rod is inserted into the positioning groove, allowing the winding rod to drive the sleeve ring to rotate and move towards the first... The two pull ropes are used to rewind the folding net, which in turn folds the net. During this process, the rack can also drive the gears and the fixed roller to rotate, causing the magnetic strip on the fixed roller to separate from the magnetic strip at the bottom of the gravity bar, reducing the resistance of the rewinding. At the same time, the force on the crossbar can drive the docking column to move upward, separating the rewinding process of the rewinding rod from the rotation process of the docking column. This allows the pull roller itself to rotate under the action of the torsion spring to tighten the first pull rope, facilitating the next operation. This invention can realize the unfolding and rewinding of the folding net simply by opening and closing the window sash. When the window sash is opened, the folding net unfolds to prevent mosquitoes from entering the room. When the window sash is closed, the folding net is rewound to avoid obstructing the view and to prevent long-term exposure to the air and accumulation of dust. Furthermore, by setting the rewinding length of the torsion spring on the rewinding rod to be greater than the unfolding length of the folding net, the torsion spring on the rewinding rod has an extra rewinding margin each time the window sash is fully unfolded. Therefore, even when the window sash is opened slightly in windy weather, the rewinding rod still has enough force to automatically rewind the folding net, greatly improving the adaptability of the door and window. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the front section structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the front section structure of the mounting box of the present invention;

[0023] Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle;

[0024] Figure 4 This is a schematic diagram of the side cross-section of the docking column of the present invention;

[0025] Figure 5 This is a top view cross-sectional structural diagram of the connector of the present invention;

[0026] Figure 6 This is a schematic diagram of the side section structure of the limiting ring of the present invention;

[0027] Figure 7 This is a schematic diagram of the side connection structure between the winding rod and the limiting ring of the present invention;

[0028] Figure 8 For the present invention Figure 2 Enlarged structural diagram at point B;

[0029] Figure 9 This is a schematic diagram of the side structure of the fixed roller of the present invention;

[0030] Figure 10 This is a schematic diagram of the gear side section structure of the present invention;

[0031] Figure 11 This is a schematic diagram of the side section structure of the sleeve ring of the present invention;

[0032] Figure 12 This is a schematic diagram of the side cross-section structure of the present invention.

[0033] In the diagram: 1. Window frame; 2. Window sash; 3. Mounting frame; 4. Mounting box; 5. Folding net; 6. Gravity strip; 7. Roller roller; 8. First pull rope; 9. First spring; 10. Connecting post; 1001. Crossbar; 1002. Adjusting spring; 11. First ratchet assembly; 12. Connecting joint; 13. Bevel gear transmission assembly; 14. Rewinding rod; 15. Second ratchet assembly; 16. Limiting ring; 17. Friction head; 1701. Release rod; 1702. Third spring; 18. Second spring; 19. Loop ring; 1901. Second pull rope; 20. Fourth spring; 21. Positioning rod; 22. Positioning groove; 23. Push head; 24. Fifth spring; 25. Push rod; 2501. Sixth spring; 26. Fixed roller; 2601. Magnetic strip; 27. Gear; 2701. Rack; 2702. Seventh spring. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please see Figure 1-12This invention provides a technical solution: a concealed folding screen door and window, comprising a window frame 1, a window sash 2, a mounting frame 3, a mounting box 4, a folding screen 5, a gravity strip 6, a pull roller 7, a first pull rope 8, a first spring 9, a connecting post 10, a crossbar 1001, an adjusting spring 1002, a first ratchet assembly 11, a connecting joint 12, a bevel gear transmission assembly 13, a winding rod 14, a second ratchet assembly 15, a limiting ring 16, a friction head 17, a release rod 1701, a third spring 1702, a second spring 18, a sleeve ring 19, a second pull rope 1901, a fourth spring 20, a positioning rod 21, a positioning groove 22, a push head 23, a fifth spring 24, a pushing rod 25, a sixth spring 2501, a fixing roller 26, a magnetic strip 2601, a gear 27, a rack 2701, and a seventh spring 2702. Example 1

[0036] Please see Figure 1-7 and Figure 12The system includes a window frame 1, within which an inwardly opening window sash 2 is installed. A mounting frame 3 is also located within the window frame 1, positioned on the outer side of the window sash 2. Furthermore, it includes a mounting box 4, fixed to the top inner side of the mounting frame 3. A gravity strip 6 is connected to the bottom of the mounting box 4 via a folded mesh 5. A pull roller 7 is rotatably mounted inside the top edge of the mounting box 4 via an embedded torsion spring. A first pull rope 8 is wound around the pull roller 7, with one end of the first pull rope 8 connected to the top edge of the window sash 2. A connecting post 10 is slidably mounted within the bottom cavity of the pull roller 7 via an embedded limiter 9. A connecting joint 12 is mounted within the bottom cavity of the connecting post 10 via a bearing. The connector 12 and the mating post 10 are connected by a first ratchet assembly 11. A bevel gear transmission assembly 13 is vertically slidably installed in the bottom cavity of the connector 12, and the bevel gear transmission assembly 13 is embedded and rotatably installed inside the top edge of the mounting box 4. One end of the bevel gear transmission assembly 13 is connected to a winding rod 14, and the winding rod 14 is laterally embedded and rotatably installed in the internal cavity of the mounting box 4 via a torsion spring. A limit ring 16 is sleeved and connected to the winding rod 14 via a second ratchet assembly 15, and a friction head 17 is contacted above the limit ring 16. The friction head 17 is elastically slidably installed in the mounting box 4 via a second spring 18, and the limit ring 16 rotates via a bearing. Installed inside the mounting box 4; a crossbar 1001 is provided on the side of the docking post 10, and the crossbar 1001 is installed horizontally through the mounting box 4 via an adjusting spring 1002, with one end of the crossbar 1001 located on the outer side of the mounting frame 3; one end of the crossbar 1001 is designed with a right-angled trapezoidal structure, and one end of the crossbar 1001 is located in the cavity on the side of the docking post 10, and the top surface of the cavity on the side of the docking post 10 is inclined, corresponding to the inclined surface at the end of the crossbar 1001, and the cavity on the side of the docking post 10 is designed with a ring structure; the cross section of the bottom cavity of the connector 12 is a regular octagonal structure, and the bottom cavity of the connector 12 has a concave-convex fit with the corresponding position of the top shaft of the bevel gear transmission assembly 13. Furthermore, the bevel gear transmission assembly 13 is composed of two meshing bevel gears; a release rod 1701 is provided on the side of the friction head 17, and the release rod 1701 is installed in the mounting box 4 through the third spring 1702, with one end of the release rod 1701 located on the outside of the mounting box 4. The inner end of the release rod 1701 is designed as a right-angled trapezoidal structure, and the inner end of the release rod 1701 is located in the internal cavity of the friction head 17. Moreover, the top surface of the internal cavity of the friction head 17 is inclined and parallel to the inclined position of the top surface of the end of the release rod 1701. When the window is opened manually, the retractor 14 can be rotated to store force. When the window is closed, the retractor 14 rotates in the opposite direction to retract the folding net 5. Example 2

[0037] Please see Figure 1 and Figure 8-11A sleeve 19 is fitted onto the outside of the take-up rod 14 and is rotatably mounted in the mounting box 4 via a bearing. A second pull rope 1901 is wound around the sleeve 19, and one end of the second pull rope 1901 is connected to the edge of the gravity bar 6. The edge of the gravity bar 6 slides against the side cavity of the mounting box 4. A positioning rod 21 is slidably mounted inside the sleeve 19 through a fourth spring 20, and the inner end of the positioning rod 21 is located in the positioning groove 22, which is formed in the take-up rod. At the corresponding position on the outer side, a pusher 23 is provided on the top of the sleeve 19, and the pusher 23 is elastically and slidably installed in the mounting box 4 by the fifth spring 24; the fixed roller 26 is installed at the bottom of the side cavity of the mounting frame 3 by bearings, and magnetic strips 2601 that attract each other are installed on the top of the fixed roller 26 and the bottom edge of the gravity strip 6. One end of the fixed roller 26 is connected to a gear 27, and a rack 2701 meshes with the top of the gear 27, and the rack 2701 is penetrated by the seventh spring 2702. The rack 2701 is installed at the bottom edge of the mounting frame 3, with one end of the rack 2701 located on the outside of the mounting frame 3; the positioning rods 21 are evenly distributed on the sleeve ring 19, and the outer ends of the positioning rods 21 are provided with rollers, and the number of positioning rods 21 corresponds to the number of positioning slots 22; the push head 23 is provided with a push rod 25 on its outer side, and the push rod 25 is installed transversely inside the mounting box 4 through the sixth spring 2501, with one end of the push rod 25 located on the outside of the mounting box 4, and the bottom of the push head 23 is arc-shaped. The design features a right-angled trapezoidal structure at the inner end of the push rod 25, which is located in the internal cavity of the push head 23. The bottom surface of the internal cavity of the push head 23 is inclined and parallel to the inclined position of the bottom surface of the push rod 25. The outer ends of the rack 2701, push rod 25, release rod 1701, and crossbar 1001 are all located on one side of the window sash 2. When the window is opened, the sleeve ring 19 is released, the gravity bar 6 moves down and drives the folding net 5 to unfold, and is fixed in conjunction with the fixing roller 26 and magnetic strip 2601.

[0038] Working principle: When using this concealed folding screen door and window, such as Figure 1-12When the user first opens the window sash 2 inward, the window sash 2 separates from the rack 2701, push rod 25, release rod 1701, and crossbar 1001. The crossbar 1001 resets under the action of the adjusting spring 1002, causing the inner end of the crossbar 1001 to separate from the recessed position on the outer side of the connecting post 10. This causes the connecting post 10 to move downward under the action of the first spring 9. The mating joint 12 inside the connecting post 10 moves downward along with it under the action of the first ratchet assembly 11. At the same time, the opening of the window sash 2 drives the pull roller 7 to rotate through the first pull rope 8, which in turn drives the connecting post 10 and the mating joint 12 to rotate. As the connecting post 10 and the mating joint 12 move downward synchronously, the mating joint 12 is finally fitted onto the bevel gear transmission assembly 13. On the top shaft, the coupling 12 drives the rewinding rod 14 to rotate in the mounting box 4 through the bevel gear transmission assembly 13. At this time, the torsion spring installed on the rewinding rod 14 begins to store force. At the same time, when the window sash 2 separates from the release rod 1701, the release rod 1701 is reset under the action of the third spring 1702, so that the inner end of the release rod 1701 separates from the middle cavity of the friction head 17. The friction head 17 moves downward under the action of the second spring 18, and contacts the limiting ring 16 through the bottom of the friction head 17 to resist it. When the rewinding rod 14 is driven to rotate clockwise, the limiting ring 16 will not rotate with it under the action of the second ratchet assembly 15. At the same time, the limiting ring 16 can limit the rewinding rod 14 to prevent it from reversing.

[0039] At the same time, the window sash 2 separates from the push rod 25. The push rod 25 resets under the action of the sixth spring 2501. The inner end of the push rod 25 separates from the middle cavity of the push head 23, so that the push head 23 moves upward under the action of the fifth spring 24. The bottom of the push head 23 separates from the positioning rod 21. At this time, the positioning rod 21 resets under the action of the fourth spring 20 and disengages from the positioning groove 22, so that the sleeve ring 19 disengages from the retracting rod 14. At this time, the gravity bar 6 loses its restraining force. Under its own weight, the gravity bar 6 moves downward in the mounting frame 3, driving the folding net 5 to unfold. At the same time, the window sash 2 separates from the rack 2701. The rack 2701 resets under the action of the seventh spring 2702. The rack 2701 drives the fixed roller 26 to rotate by meshing with the gear 27, so that the magnetic strip 2601 on the fixed roller 26 rotates to the top position and attracts the magnetic strip 2601 at the bottom of the gravity bar 6, thus assisting in fixing the gravity bar 6 and realizing that the folding net 5 automatically unfolds when the window sash 2 is opened.

[0040] Then, when the window sash 2 is closed, the window sash 2 contacts and presses against the rack 2701, push rod 25, release rod 1701, and crossbar 1001. Following the above steps, the rack 2701 moves to drive the gear 27 and fixed roller 26 to rotate, causing the gravity bar 6 to lose its magnetic attraction. The crossbar 1001 moves to contact the cavity in the middle of the docking post 10, pushing the docking post 10 to move upward, causing the connector 12 to disengage from the bevel gear transmission assembly 13. At the same time, the push rod 25 is forced into the push head 23, causing the push head 23 to move downward, so that the push head 23 presses the positioning rod 21 at the corresponding position into the positioning groove 22, thereby connecting the sleeve ring 19 with the winding rod 14, and the release rod 1701... When subjected to force, the friction head 17 is inserted into the friction head 17, causing the friction head 17 to move upward, thus separating the friction head 17 from the limiting ring 16. This allows the limiting ring 16 to rotate freely without restriction. At this time, the retracting rod 14 rotates in the opposite direction under the action of its own torsion spring, causing the sleeve ring 19 to rotate. The second pull rope 1901 retracts the gravity strip 6, so that when the window sash 2 is closed, the folding net 5 automatically folds and hides. Here, the retracting force storage length of the torsion spring on the retracting rod 14 is greater than the unfolded height of the folding net 5. Therefore, when the window sash 2 is opened slightly, the retracting rod 14 has enough retracting force to retract the folding net 5, without having to fully open the window sash 2 every time, greatly improving its applicability.

[0041] Contents not described in detail in this specification are prior art known to those skilled in the art. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Terms such as "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail" indicate orientations or positional relationships based on the accompanying drawings, and are used only for ease of description and simplification, not to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, 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 invention based on the specific circumstances.

[0042] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A concealed folding screen door and window, comprising a window frame (1), wherein an inwardly opening window sash (2) is installed inside the window frame (1), and an installation frame (3) is provided inside the window frame (1), and the installation frame (3) is located on the outer side of the window sash (2); Its features are: It also includes a mounting box (4), which is fixed to the top inner side of the mounting frame (3), and the bottom of the mounting box (4) is connected to a gravity strip (6) through a folded mesh (5). A pull roller (7) is installed inside the top edge of the mounting box (4) by a torsion spring, and a first pull rope (8) is wound on the pull roller (7). One end of the first pull rope (8) is connected to the top edge of the window sash (2). A docking post (10) is installed in the bottom cavity of the pull roller (7) by a first spring (9) for limiting and sliding. A connector (12) is installed in the bottom cavity of the connector (10) by a bearing, and the connector (12) is connected to the connector (10) by a first ratchet assembly (11). A bevel gear transmission assembly (13) is vertically slidably installed in the bottom cavity of the connector (12), and the bevel gear transmission assembly (13) is embedded and rotatably installed inside the top edge of the mounting box (4). One end of the bevel gear transmission assembly (13) is connected to a winding rod (14), and the winding rod (14) is rotatably installed in the cavity inside the mounting box (4) by a torsion spring. A limit ring (16) is sleeved and connected on the winding rod (14) by a second ratchet assembly (15), and a friction head (17) is contacted above the limit ring (16). The friction head (17) is elastically slidably installed in the mounting box (4) by a second spring (18), and the limit ring (16) is rotatably installed in the mounting box (4) by a bearing. A sleeve (19) is sleeved on the outside of the winding rod (14), and the sleeve (19) is rotatably installed in the mounting box (4) through a bearing. A second pull rope (1901) is wound around the sleeve (19), and one end of the second pull rope (1901) is connected to the edge of the gravity bar (6). At the same time, the edge of the gravity bar (6) slides in close contact with the side cavity of the mounting box (4). A positioning rod (21) is slidably installed inside the sleeve (19) through a fourth spring (20), and the inner end of the positioning rod (21) is located in the positioning groove (22). The positioning groove (22) is opened at the corresponding position on the outside of the winding rod (14). A push head (23) is provided on the top of the sleeve (19), and the push head (23) is elastically slidably installed in the mounting box (4) through a fifth spring (24). A fixed roller (26) is mounted on the bottom of the side cavity of the mounting frame (3) by bearings. Magnetic strips (2601) with magnetic attraction are installed on the top of the fixed roller (26) and the bottom edge of the gravity strip (6). A gear (27) is connected to one end of the fixed roller (26), and a rack (2701) meshes with the top of the gear (27). The rack (2701) is installed at the bottom edge of the mounting frame (3) through a seventh spring (2702), and one end of the rack (2701) is located on the outside of the mounting frame (3).

2. The concealed folding screen door and window according to claim 1, characterized in that: A crossbar (1001) is provided on the side of the docking column (10), and the crossbar (1001) is installed horizontally through the mounting box (4) by adjusting spring (1002), and one end of the crossbar (1001) is located on the outside of the mounting frame (3).

3. A concealed folding screen door and window according to claim 2, characterized in that: One end of the crossbar (1001) is designed with a right-angled trapezoidal structure, and one end of the crossbar (1001) is located in the side cavity of the docking column (10). The top surface of the side cavity of the docking column (10) is inclined and corresponds to the inclined surface of the end of the crossbar (1001). The side cavity of the docking column (10) is designed with a ring structure.

4. A concealed folding screen door and window according to claim 1, characterized in that: The bottom cavity of the connector (12) has a regular octagonal cross section, and the bottom cavity of the connector (12) is in concave-convex fit with the top shaft of the bevel gear transmission assembly (13). The bevel gear transmission assembly (13) is composed of two bevel teeth meshing together.

5. A concealed folding screen door and window according to claim 1, characterized in that: The friction head (17) is provided with a release rod (1701) on its side. The release rod (1701) is installed in the mounting box (4) through a third spring (1702). One end of the release rod (1701) is located outside the mounting box (4). The inner end of the release rod (1701) is designed as a right trapezoidal structure. The inner end of the release rod (1701) is located in the internal cavity of the friction head (17). The top surface of the internal cavity of the friction head (17) is inclined and parallel to the inclined position of the top surface of the end of the release rod (1701).

6. A concealed folding screen door and window according to claim 1, characterized in that: The positioning rods (21) are distributed at equal angles on the sleeve ring (19), and the outer end of the positioning rods (21) is provided with rollers. The number of positioning rods (21) corresponds to the number of positioning grooves (22).

7. A concealed folding screen door and window according to claim 1, characterized in that: The pusher (23) is provided with a push rod (25) on the outside, and the push rod (25) is installed in the mounting box (4) through the sixth spring (2501) and one end of the push rod (25) is located on the outside of the mounting box (4). The bottom of the pusher (23) is designed with an arc shape.

8. A concealed folding screen door and window according to claim 7, characterized in that: The inner end of the push rod (25) is designed as a right-angled trapezoidal structure, and the inner end of the push rod (25) is located in the internal cavity of the push head (23). The bottom surface of the internal cavity of the push head (23) is inclined and parallel to the inclined position of the bottom surface of the end of the push rod (25).

9. A concealed folding screen door and window according to claim 1, characterized in that: The outer ends of the rack (2701), push rod (25), release rod (1701) and crossbar (1001) are all located on one side of the window sash (2).

Images