A sealed water-proof door and window

Abstract

The application discloses a sealed waterproof door and window, relates to the technical field of waterproof doors and windows, and comprises a window frame and a window sash, and an intermediate sealing rubber strip is arranged on the window frame; when the window sash is butted with the window frame, the intermediate sealing rubber strip forms a watertight cavity on the outdoor side between the window sash and the window frame and forms an airtight cavity on the indoor side; a flow guide hole is arranged on the indoor side of the window sash and is communicated with the watertight cavity, a drainage hole is arranged on the outdoor side of the window frame and is communicated with the watertight cavity, and an air pressure self-balancing mechanism is arranged in the intermediate sealing rubber strip, and the air pressure self-balancing mechanism automatically balances the air pressure of the airtight cavity and the watertight cavity. The air pressure self-balancing mechanism is used for automatically adjusting the pressure between the airtight cavity and the watertight cavity, weakening and eliminating the pressure difference between the airtight cavity and the watertight cavity, preventing the intermediate sealing rubber strip from deforming due to the pressure difference, preventing gaps from being formed at the connecting position of the intermediate sealing rubber strip, preventing rainwater from penetrating into the window frame, and further improving the sealing and waterproof effect.

Description

A type of sealed and waterproof door and window Technical Field

[0001] This invention relates to the field of waterproof doors and windows technology, specifically to a sealed and waterproof door and window. Background Technology

[0002] As is well known, the structure of doors and windows is not conducive to drainage. Therefore, drainage holes need to be made in the window frame and sash to drain water to the outside. This allows water entering the window frame and sash profile to be smoothly discharged to the outside through the drainage holes. The drainage principle is isobaric drainage, that is, the water inlet cavity is connected to the outside, so that the air pressure in the water inlet cavity is equal to that outside. The drainage hole is set at the lowest point, so that the water entering the door and window structure can flow out naturally by gravity.

[0003] For example, the Chinese invention patent with application publication number CN104213805B, authorization announcement date November 9, 2016, and titled "High Watertightness Door and Window System," describes a high watertightness door and window system, including a frame and an operable window sash. A CG-type thermal insulation strip is fixedly provided on the frame. A long-tailed water vapor separation strip is fixedly provided on the CG-type thermal insulation strip between the frame and the operable window sash. A T-type thermal insulation strip is fixedly provided on the operable window sash. The end of the long-tailed water vapor separation strip overlaps with the end of the T-type thermal insulation strip. A CG-type sash thermal insulation strip is fixedly provided on the operable window sash. A central rubber strip is fixedly provided on the CG-type sash thermal insulation strip; the top of the central rubber strip overlaps with the glass, and its bottom is embedded in the CG-type sash thermal insulation strip; combined glass pads are fixedly provided at the two corners of the central rubber strip; several drainage holes are fixedly provided at the cantilever of the frame; a sealing strip is fixedly provided at the cantilever of the window sash where the frame overlaps with the opening window sash; the combined glass pad includes an upper glass pad unit and a lower glass pad unit; the ends of the upper glass pad unit and the lower glass pad unit are wedge-shaped; the contact parts of the upper glass pad unit and the lower glass pad unit are provided with mutually cooperating serrated grooves.

[0004] As mentioned above, by setting a long-tailed water vapor separation strip, a sealed watertight cavity is formed on the outside side and a sealed airtight cavity is formed on the inside side when the window frame and window sash are joined. A drainage hole is set on the outside side of the window sash using the principle of pressure equalization to provide an outlet channel for water entering the window sash. However, in rainy weather with high outdoor pressure, there is a pressure difference between the watertight cavity and the airtight cavity. When there is a pressure difference between the two cavities and the liquid level in the watertight cavity is high, the middle sealing strip will deform and gaps will appear, thus affecting the sealing and waterproofing effect. As a result, water will seep into the airtight cavity along the gaps. Summary of the Invention

[0005] The purpose of this invention is to provide a sealed and waterproof door and window to overcome the above-mentioned shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a sealed and waterproof door and window, comprising a window frame and a window sash, wherein a middle sealing strip is provided on the window frame; when the window sash is connected to the window frame, the middle sealing strip forms a watertight cavity on the outdoor side and an airtight cavity on the indoor side between the window sash and the window frame; a drainage hole is provided on the inner side of the window sash and communicates with the watertight cavity, and a drainage hole is provided on the outer side of the window frame and communicates with the watertight cavity; a self-balancing air pressure mechanism is provided in the middle sealing strip, wherein when there is a pressure difference between the airtight cavity and the watertight cavity, the self-balancing air pressure mechanism automatically balances the air pressure between the airtight cavity and the watertight cavity.

[0007] As a further description of the above technical solution: the air pressure self-balancing mechanism includes an air pressure regulating tube, which is integrally injection molded on the inner side of the intermediate sealing strip along the length direction of the intermediate sealing strip, and one end of the air pressure regulating tube is connected to a first connector and communicates with the watertight cavity, and the other end of the air pressure regulating tube is connected to a second connector and communicates with the airtight cavity, and a piston assembly is slidably embedded in the inner part of the air pressure regulating tube.

[0008] As a further description of the above technical solution: a reset adjustment mechanism is provided on the outside of the air pressure regulating pipe, the reset adjustment mechanism is connected to the piston assembly in a driving manner, and the reset adjustment mechanism is used to drive the piston assembly on the inside of the air pressure regulating pipe to slide and reset.

[0009] As a further description of the above technical solution: multiple sets of supports are evenly spaced around the periphery of the air pressure regulating pipe.

[0010] As a further description of the above technical solution: a first C-shaped thermal insulation strip is fixed on the window frame, and a groove is formed on the top of the first C-shaped thermal insulation strip. An outer fastening strip and an inner fastening strip are respectively formed on both sides of the first C-shaped thermal insulation strip on the window frame.

[0011] As a further description of the above technical solution: a connecting strip is formed at the bottom center of the intermediate sealing strip to cooperate with the slot, and the connecting strip is embedded in the slot. The slot and the connecting strip are made of the same material.

[0012] As a further description of the above technical solution: the bottom of the intermediate sealing strip on the outdoor side is formed with an inner connecting strip, which is embedded in the inner fastener strip; the inner sealing strip on the indoor side is formed with an outer connecting strip, which is embedded in the outer fastener strip.

[0013] As a further description of the above technical solution: the window sash is provided with a second C-shaped thermal insulation strip, and the bottom of the second C-shaped thermal insulation strip is formed with a skirt. When the window sash is connected to the window frame, the skirt abuts against the middle sealing strip.

[0014] As a further description of the above technical solution: a drip edge is installed at an angle at the bottom of the window sash on the outdoor side, and a sealing strip is embedded on the inner side of the bottom of the window sash on the outdoor side.

[0015] As a further description of the above technical solution: a glass buckle is provided on the window sash, and a window glass is embedded between the glass buckle and the window sash.

[0016] In the above technical solution, the present invention provides a sealed and waterproof door and window. By setting an air pressure self-balancing mechanism on the middle sealing strip, the air pressure self-balancing mechanism realizes automatic adjustment of the pressure between the airtight cavity and the watertight cavity, weakening or even eliminating the pressure difference between the airtight cavity and the watertight cavity, preventing the middle sealing strip from deforming due to the pressure difference and causing gaps at the connection position of the middle sealing strip, allowing rainwater to penetrate into the inside of the window frame, and further improving the sealing and waterproof effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 is a schematic diagram of the overall structure of a sealed and waterproof door and window provided in an embodiment of the present invention;

[0019] Figure 2 is a schematic diagram of the window frame provided in an embodiment of the present invention;

[0020] Figure 3 is a schematic diagram of the window sash provided in an embodiment of the present invention;

[0021] Figure 4 is a schematic diagram of the structure of the intermediate sealing strip provided in an embodiment of the present invention;

[0022] Figure 5 is a schematic cross-sectional view of the intermediate sealing strip provided in an embodiment of the present invention;

[0023] Figure 6 is a schematic diagram of the air pressure self-balancing mechanism provided in an embodiment of the present invention;

[0024] Figure 7 is a schematic diagram of the reset adjustment mechanism provided in an embodiment of the present invention;

[0025] Figure 8 is a schematic diagram of the piston assembly provided in an embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Window frame; 11. Drainage hole; 12. First C-shaped thermal break strip; 13. Clip groove; 14. External fastening strip; 15. Internal fastening strip; 2. Window sash; 21. Drainage hole; 22. Second C-shaped thermal break strip; 23. Skirt; 24. Glass fastening strip; 25. Window glass; 26. Sealing strip at the stop; 27. Drip edge strip; 3. Intermediate sealing strip; 31. External locking strip; 32. Internal locking strip; 33. Connecting strip; 4. Air pressure self-balancing mechanism; 41. Air pressure regulating pipe; 411. First connector; 412. Second connector; 42. Piston assembly; 421. Adjusting cylinder; 422. Through hole; 423. Adjusting plug; 424. Support spring; 425. Lubricating oil chamber; 44. Reset adjustment mechanism; 441. Adjusting box; 442. Cable conduit; 443. Rewinding shaft; 444. First traction rope; 445. Second traction rope; 446. Adjusting disc; 5. Airtight chamber; 6. Watertight chamber. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Please refer to Figures 1-8. This embodiment of the invention provides a technical solution: a sealed and waterproof door and window, including a window frame 1 and a window sash 2. Specifically, the window sash 2 is connected to the window frame 1 by a hinge, meaning the window sash 2 can be opened and closed via the hinge. A glass retaining strip 24 is provided on the window sash 2, and a window glass 25 is embedded between the glass retaining strip 24 and the window sash 2. An intermediate sealing strip 3 is provided on the window frame 1. When the window sash 2 is aligned with the window frame 1, i.e., the window sash 2 is in the closed state, the window sash 2 and the window frame 1 overlap and align. The intermediate sealing strip 3 forms a watertight cavity 6 on the outdoor side between the window sash 2 and the window frame 1, providing a waterproof seal inside the window. An airtight cavity 5 is formed on the side, that is, the internal cavity after the window sash 2 and the window frame 1 are joined together by the intermediate sealing strip 3 is divided into two cavities: a watertight cavity 6 near the outside and an airtight cavity 5 near the inside. A guide hole 21 is opened on the inner side of the window sash 2, which communicates with the watertight cavity 6. A drain hole 11 is opened on the outer side of the window frame 1, which communicates with the watertight cavity 6. After the window sash 2 is closed, there is an opening on the outer side of the window sash 2 and the window frame 1 (on the outside side) that communicates with the watertight cavity 6, that is, the watertight cavity 6 is connected to the outside side, so that the air pressure in the watertight cavity 6 is equal to that in the outside. The drain hole 11 is opened on the window frame 1 and is located at the bottom of the watertight cavity 6. During drainage (as indicated by mark a in Figure 1), when water enters the inner side of window sash 2 from the gap between the outdoor glass and the window sash 2, the incoming rainwater will flow into the watertight cavity 6 through the guide hole 21 under gravity. At the same time, rainwater entering from the gap formed outside after the window sash 2 and window frame 1 are closed also directly enters the watertight cavity 6. Finally, the rainwater in the watertight cavity 6 is discharged to the outside through the drainage hole 11 on the window frame 1 under gravity. The intermediate sealing strip 3 is equipped with an air pressure self-balancing mechanism 4. When there is an air pressure difference between the airtight cavity 5 and the watertight cavity 6, the air pressure self-balancing mechanism 4 automatically balances the airtightness. The air pressure in cavity 5 and watertight cavity 6 can be adjusted by an optional air pressure self-balancing mechanism 4, which is an inverted U-shaped connecting pipe installed on the window sash 2. Its two ends are connected to the watertight cavity 6 and the airtight cavity 5, respectively. By setting the air pressure self-balancing mechanism 4 on the intermediate sealing strip 3, the air pressure self-balancing mechanism 4 can automatically adjust the pressure between the airtight cavity 5 and the watertight cavity 6, weakening or even eliminating the pressure difference between the airtight cavity 5 and the watertight cavity 6. This prevents the intermediate sealing strip 3 from deforming due to the pressure difference, which could cause gaps at the connection position of the intermediate sealing strip 3, allowing rainwater to penetrate into the inside of the window frame 1, and further improving the sealing and waterproofing effect.

[0030] In another embodiment of the present invention, the air pressure self-balancing mechanism 4 further includes an air pressure regulating pipe 41. The air pressure regulating pipe 41 is integrally injection molded on the inner side of the intermediate sealing strip 3 along the length direction of the intermediate sealing strip 3. One end of the air pressure regulating pipe 41 is connected to a first connector 411 and communicates with the watertight cavity 6. The other end of the air pressure regulating pipe 41 is connected to a second connector 412 and communicates with the airtight cavity 5. A piston assembly 42 is slidably embedded in the air pressure regulating pipe 41. Multiple sets of brackets are evenly arranged around the periphery of the air pressure regulating pipe 41. When balancing the air pressure in the airtight cavity 5 and the watertight cavity 6, if the air pressure inside the watertight cavity 6 is greater than that inside the airtight cavity 5, the watertight cavity 6 connects to one end of the inner cavity of the pressure regulating pipe 41 through the first connector 411, thereby pushing the piston assembly 42 in the inner cavity of the pressure regulating pipe 41 to slide, thus regulating the air pressure. Conversely, if the air pressure inside the airtight cavity 5 is greater than that inside the watertight cavity 6, it similarly pushes the piston assembly 42 in the inner cavity of the pressure regulating pipe 41 to move in the opposite direction, thereby balancing the air pressure in the airtight cavity 5 and the watertight cavity 6 and preventing a pressure difference between the airtight cavity 5 and the watertight cavity 6. This causes gaps to appear in the deformation of the intermediate sealing strip 3, affecting the sealing and waterproofing effect. As a result, water will seep into the indoor side through the gaps after leakage. To further address this, the air pressure self-balancing mechanism 4 is integrally formed on the intermediate sealing strip 3 along its length by an air pressure regulating pipe 41. This increases the length of the air pressure regulating pipe 41, expands the range of air pressure regulation, and enhances the strength of the intermediate sealing strip 3. At the same time, the air pressure regulating pipe 41 works with the piston assembly 42 to regulate the air pressure, ensuring that the airtight cavity 5 and the watertight cavity 6 are not connected to each other, preventing the flow of water and air, and improving the moisture-proof and heat-insulating effect.

[0031] In another embodiment of the present invention, a reset adjustment mechanism 44 is provided on the outside of the air pressure regulating pipe 41. The reset adjustment mechanism 44 is connected to the piston assembly 42 and is used to drive the piston assembly 42 on the inside of the air pressure regulating pipe 41 to slide and reset. When the piston assembly 42 in the air pressure regulating pipe 41 moves to balance the air pressure at one end, the window sash 2 is opened, and the airtight cavity 5 and the watertight cavity 6 are directly open, that is, the air pressure in the airtight cavity 5 and the watertight cavity 6 are the same. When the window sash 2 is closed, the air pressure regulating pipe 41 cannot reset. This means that when the window sash is closed again, the piston assembly 42 in the air pressure regulating pipe 41 cannot slide and adjust on one side to balance the air pressure difference between the airtight cavity 5 and the watertight cavity 6. This will also cause the middle sealing strip to deform and create gaps, affecting the sealing and waterproofing effect. By setting the reset adjustment mechanism 44, the piston assembly 42 in the air pressure regulating pipe 41 can be slidably adjusted and reset after the window sash 2 is opened, thereby achieving reuse.

[0032] In another embodiment of the present invention, the reset adjustment mechanism 44 includes an adjustment box 441 located at the middle section of the air pressure regulating pipe 41, and two ends of the adjustment box 441 are fixed with conduits 442 extending to the end of the air pressure regulating pipe 41. The adjustment box 441 protrudes to the outside of the middle sealing strip 3, and a winding shaft 443 is rotatably arranged on the inner side of the adjustment box 441. A first traction rope 444 and a second traction rope 445 are respectively wound around the two sides of the winding shaft 443. The first traction rope 444 and the second traction rope 445 are wound in opposite directions on the winding shaft 443. The first traction rope 444 and the second traction rope 445 pass through the conduit 442 and extend from both ends of the air pressure regulating pipe 41 to the inner side of the air pressure regulating pipe 41 and are respectively connected to the two ends of the piston assembly 42. An adjustment disc 446 is fixedly sleeved on the winding shaft 443, and the adjustment disc 446 extends through to the outside of the adjustment box 441.

[0033] When the piston assembly 42 slides to one end in the pressure regulating pipe 41 under the action of air pressure to adjust the pressure difference between the airtight chamber 5 and the watertight chamber 6, the piston assembly 42 pulls the first traction rope 444 to move. The first traction rope 444 drives the winding shaft 443 to rotate, thereby unwinding the first traction rope 444 to meet the movement needs of the piston assembly 42. Since the first traction rope 444 and the second traction rope 445 are wound in opposite directions on the winding shaft 443, the winding shaft 443 simultaneously winds up the second traction rope 445, thereby preventing the second traction rope 445 from becoming loose and affecting the movement of the piston assembly 42. Similarly, when the pressure regulating pipe 41 is adjusted by the reset adjustment mechanism 44, the piston assembly 42 moves in a controlled manner. When the piston assembly 42 in section 1 is slidably adjusted and reset for repeated use, the adjustment disc 446 is rotated, which drives the winding shaft 443 to rotate. When the winding shaft 443 rotates, it will simultaneously unwind one traction rope and coil around another traction rope (that is, when the first traction rope 444 is winding, the second traction rope 445 is unwinding simultaneously, and when the first traction rope 444 is unwinding, the second traction rope 445 is winding simultaneously). This will drive the piston assembly 42 in the air pressure regulating pipe 41 to reset, so as to balance the air pressure. At the same time, the piston assembly 42 can be slidably adjusted in both directions according to actual needs, and the unwinding and winding will be synchronized to prevent the traction rope from becoming loose and affecting the movement of the piston assembly 42.

[0034] In another embodiment of the present invention, the piston assembly 42 includes an adjusting cylinder 421, which is slidably embedded in the air pressure regulating pipe 41. Adjusting plugs 423 are symmetrically slidably embedded on both sides of the adjusting cylinder 421, and a support spring 424 connects the two adjusting plugs 423. The elastic force of the support spring 424 drives the two adjusting plugs 423 to move in opposite directions. A lubricating oil cavity 425 is formed between the two adjusting plugs 423 and the air pressure regulating pipe 41, and the lubricating oil cavity 425 is filled with lubricating oil. Through holes 422 are evenly opened on the periphery of the adjusting cylinder 421. By configuring the piston assembly 42 as a combination of the adjusting cylinder 421 and the adjusting plugs 423, when a pressure difference occurs between the airtight cavity 5 and the watertight cavity 6, the piston assembly 42 slides in the air pressure regulating pipe 41 to balance the pressure difference between the airtight cavity 5 and the watertight cavity 6. When the piston assembly 42 and the air pressure regulating pipe 41 become stuck and cannot move smoothly, the air pressure will act on the regulating plug 423 in the piston assembly 42, thereby driving the regulating plug 423 to move inward to the regulating cylinder 421. Then, the regulating plug 423 will evenly squeeze the lubricating oil in the lubricating oil chamber 425 out of the through hole 422 on the regulating cylinder 421, thereby achieving lubrication and making the piston assembly 42 move more stably and smoothly. When the piston assembly 42 moves normally, the air pressure will not push the regulating plug 423 to adapt, so as to achieve passive self-adaptive lubrication and improve the stability of air pressure self-regulation. Furthermore, the regulating cylinder 421 has an annular groove on its circumference. After the lubricating oil is squeezed out, it will collect in the annular groove, thereby generating an oil film between it and the inner wall of the air pressure regulating pipe 41, further improving the sealing effect of the piston assembly 42 on the regulating cylinder 421.

[0035] In another embodiment of the present invention, a first C-shaped thermal insulation strip 12 is fixed on the window frame 1, and a groove 13 is formed on the top of the first C-shaped thermal insulation strip 12. An outer fastening strip 14 and an inner fastening strip 15 are respectively formed on both sides of the first C-shaped thermal insulation strip 12 on the window frame 1. A connecting strip 33 for use with the groove 13 is formed at the bottom center of the middle sealing strip 3, and the connecting strip 33 is embedded in the groove 13. The groove 13 and the connecting strip 33 are made of the same material. Specifically, the groove 13 and the connecting strip 33 are both made of rubber, and their coefficients of thermal expansion and contraction are the same (the coefficient of thermal expansion and contraction refers to the amount of change in length of a one-meter-long solid material when the temperature rises by one degree Celsius). The middle sealing strip 3 has an inner connecting strip 32 formed at the bottom of the outdoor side, which is embedded in the inner connecting strip 15. The middle sealing strip 3 has an outer connecting strip 31 formed on the indoor side, which is embedded in the outer connecting strip 14. The bottom sides of the intermediate sealing strip 3 are respectively formed with inner retaining strips 32 and outer retaining strips 31. The inner retaining strips 32 are embedded in the inner retaining strips 15 on the window frame 1, and the outer retaining strips 31 are embedded in the outer retaining strips 14 on the window frame 1. This simultaneous engagement of the two sides significantly improves the stability of the intermediate sealing strip 3 installation and prevents the intermediate sealing strip 3 from falling off due to the pressure of the closing window sash 2. Furthermore, the inner retaining strips 32 formed on the bottom of the intermediate sealing strip 3 on the outdoor side are embedded in the outer retaining strips 14 on the window frame 1 to form a flat drainage surface on the side of the intermediate sealing strip 3 opposite to the watertight cavity 6, improving the smoothness of drainage and preventing the connection of the intermediate sealing strip 3 from being... Water accumulation is likely to occur. Furthermore, since the outer retaining strip 31 and the inner retaining strip 32 are both made of rubber, while the outer retaining strip 14 and the inner retaining strip 15 formed by the window frame 1 are both made of alloy, gaps may appear when the two are connected and interlocked due to thermal expansion and contraction, thus affecting the sealing performance of the intermediate sealing strip 3. By forming a groove 13 at the top of the first C-shaped heat insulation strip 12 and forming a connecting strip 33 along its length at the bottom center of the intermediate sealing strip 3, and embedding the connecting strip 33 in the groove 13, the groove 13 and the connecting strip 33 are made of the same material and have the same coefficient of thermal expansion and contraction, thereby reducing the possibility of gaps caused by thermal expansion and contraction and further improving the sealing performance of the intermediate sealing strip 3 connection.

[0036] In another embodiment of the present invention, a second C-shaped thermal insulation strip 22 is provided on the window sash 2, and a skirt 23 is formed at the bottom of the second C-shaped thermal insulation strip 22. When the window sash 2 is connected to the window frame 1, the skirt 23 abuts against the intermediate sealing strip 3. When the window sash 2 is in the closed state, the intermediate sealing strip 3 forms a watertight cavity 6 on the outdoor side and an airtight cavity 5 on the indoor side between the window sash 2 and the window frame 1. Specifically, when the window sash 2 is closed, the skirt 23 formed at the bottom of the second C-shaped thermal insulation strip 22 abuts against the intermediate sealing strip 3, thereby dividing the inner cavity formed between the window sash 2 and the window frame 1 into two cavities, namely the airtight cavity 5 and the watertight cavity 6.

[0037] In another embodiment of the present invention, a drip edge 27 is installed at an angle on the bottom of the window sash 2 on the outdoor side. The drip edge 27 can directly guide a large amount of rainwater coming down the glass from the outside to the outside of the window, forming an effective waterproof structure. This prevents a large amount of rainwater from entering the watertight cavity 6 from the gap formed on the outside of the window sash 2 after the connection between the window sash 2 and the window frame 1. A stop sealing strip 26 is embedded on the inner side of the bottom of the window sash 2 on the outdoor side. When the window sash 2 is closed, the stop sealing strip 26 abuts against the inner side of the window frame 1, thereby improving the sealing performance of the closed window sash 2.

[0038] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A sealed and waterproof door and window, comprising a window frame (1) and a window sash (2), wherein a middle sealing strip (3) is provided on the window frame (1); when the window sash (2) is connected to the window frame (1), the middle sealing strip (3) forms a watertight cavity (6) on the outdoor side between the window sash (2) and the window frame (1), and an airtight cavity (5) on the indoor side; a drainage hole (21) is provided on the inner side of the window sash (2) and communicates with the watertight cavity (6), and a drainage hole (11) is provided on the outer side of the window frame (1) and communicates with the watertight cavity (6), characterized in that: The intermediate sealing strip (3) is provided with a pressure self-balancing mechanism (4). When there is a pressure difference between the airtight cavity (5) and the watertight cavity (6), the pressure self-balancing mechanism (4) automatically balances the pressure between the airtight cavity (5) and the watertight cavity (6). The pressure self-balancing mechanism (4) includes a pressure regulating pipe (41). The pressure regulating pipe (41) is integrally injection molded on the inner side of the intermediate sealing strip (3) along the length direction of the intermediate sealing strip (3), and one end of the pressure regulating pipe (41) is connected to a first connector (4). 11) The air pressure regulating pipe (41) is connected to the watertight cavity (6). The other end of the air pressure regulating pipe (41) is connected to the second connector (412) and connected to the airtight cavity (5). The piston assembly (42) is slidably embedded in the air pressure regulating pipe (41). A reset adjustment mechanism (44) is provided on the outside of the air pressure regulating pipe (41). The reset adjustment mechanism (44) is connected to the piston assembly (42) in a transmission manner. The reset adjustment mechanism (44) is used to drive the piston assembly (42) on the inside of the air pressure regulating pipe (41) to slide and reset.

2. A sealed and waterproof door and window according to claim 1, characterized in that, Multiple sets of supports are equidistantly arranged around the air pressure regulating pipe (41).

3. A sealed and waterproof door and window according to claim 1, characterized in that, A first C-shaped heat insulation strip (12) is fixed on the window frame (1), and a slot (13) is formed on the top of the first C-shaped heat insulation strip (12). An outer fastening strip (14) and an inner fastening strip (15) are formed on both sides of the first C-shaped heat insulation strip (12) on the window frame (1).

4. A sealed and waterproof door and window according to claim 3, characterized in that, The bottom center of the intermediate sealing strip (3) is formed with a connecting strip (33) for use with the slot (13), and the connecting strip (33) is embedded in the slot (13). The slot (13) and the connecting strip (33) are made of the same material.

5. A sealed and waterproof door and window according to claim 4, characterized in that, The intermediate sealing strip (3) has an inner connecting strip (32) formed at the bottom of the outdoor side, and the inner connecting strip (32) is embedded in the inner connecting buckle (15). The intermediate sealing strip (3) has an outer connecting strip (31) formed on the indoor side, and the outer connecting strip (31) is embedded in the outer connecting buckle (14).

6. A sealed and waterproof door and window according to claim 1, characterized in that, The window sash (2) is provided with a second C-shaped heat insulation strip (22), and the bottom of the second C-shaped heat insulation strip (22) is formed with a skirt (23). When the window sash (2) is connected to the window frame (1), the skirt (23) abuts against the middle sealing strip (3).

7. A sealed and waterproof door and window according to claim 1, characterized in that, The window sash (2) is installed with a water-drip strip (27) at the bottom of the outdoor side, and a stop sealing strip (26) is embedded on the inner side of the bottom of the outdoor side of the window sash (2).

8. A sealed and waterproof door and window according to claim 1, characterized in that, The window sash (2) is provided with a glass buckle (24), and a window glass (25) is embedded between the glass buckle (24) and the window sash (2).

Images