High-leakproofness aluminum alloy door and window

Abstract

The high-leakproofness aluminum alloy door and window comprises a door and window auxiliary frame and a sliding door, first gear transmission mechanisms are arranged at the upper end and the lower end of the inner side edge of the door and window auxiliary frame and connected with sealing strips, driving racks are arranged on the outer side faces of the upper end and the lower end of the sliding door, and the driving racks push the sealing strips to be tightly attached to the sliding door through the first gear transmission mechanisms when the door and window are closed; the two are adsorbed through magnetic attraction force; when the sliding door is closed, the push rods push the sealing plates to jack up and seal upwards through the second gear transmission mechanisms, and when the sliding door is opened, the torsion springs drive the sealing plates to reset and compress the elastic pieces; through mechanical and magnetic dual sealing and side edge and end face surrounding sealing, air and noise permeation is effectively prevented, heat transfer is reduced, the energy consumption pain point of a traditional sliding door and window is solved, and an efficient and economical technical scheme is provided for building energy saving.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum alloy doors and windows, in particular to a highly airtight aluminum alloy door and window. Background Art

[0002] Doors and windows are important components of the building envelope system. Doors and windows are divided into enclosure components or partition components according to their location, and have different design requirements to have functions such as thermal insulation, heat insulation, sound insulation, waterproofing, and fire prevention. The new requirement is energy saving. In cold areas, the heat lost due to the gaps between doors and windows accounts for about 25% of the total heating heat consumption. The airtightness requirement of doors and windows is an important part of energy-saving design. In construction projects, doors and windows are mainly divided into two types according to the opening method: casement type and sliding type. Sliding doors and windows have the advantages of easy opening, no space occupation, and low risk of falling off. At the same time, due to the unique sliding opening method of sliding doors and windows, it is difficult to achieve effective sealing of the doors and windows from top to bottom, resulting in poor airtightness, seriously affecting the thermal insulation performance, and unable to meet the requirements of energy-saving buildings. This is also the main disadvantage of sliding windows compared to casement windows. In response to the shortcomings of sliding doors and windows, the present invention provides a high-sealing aluminum alloy door and window.

[0003] Chinese patent CN107044250A discloses a highly airtight door comprising a door frame and a door leaf, wherein one side of the door leaf is hinged to the door frame, and the remaining side of the door leaf is provided with an active rack, the tooth surface of the active rack facing the door frame, the active rack being parallel to the rotation path of the door leaf, a driving gear being provided at a position on the door frame corresponding to the driving rack, the driving gear cooperating with the driving rack, and a driven gear and a driven rack being meshed with the driving gear, the driven rack being meshed with the driven gear, a sealing strip being provided on the end of the driven rack facing the door leaf, and both the active rack and the driven rack being arc-shaped. This patent provides a highly airtight door, wherein when the door leaf is completely closed, the sealing strip pushed by the driven rack abuts against the door edge, thereby sealing the gap at the door edge, preventing air leakage through the gap and improving the door's sealing performance. However, this patent only addresses the side gaps when the door is closed, and does not consider the gaps between the door and the ground or ceiling. In actual use, these gaps may become the main channels for air infiltration, resulting in indoor heat loss. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems of traditional sliding doors and windows, such as single sealing part, lack of dynamic sealing ability, low sealing performance, and poor building energy-saving effect.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions: a highly airtight aluminum alloy door and window, comprising a door and window attachment frame, wherein the door and window attachment frame is arranged in the wall of the door and window opening of the building, a sliding door is slidably connected in the door and window attachment frame, the sliding door is provided with two door panels, a cavity is provided between the two door panels, the upper and lower ends of the inner side of the door and window attachment frame are both provided with a first gear transmission mechanism, a sealing strip is connected to the first gear transmission mechanism, and active racks are provided on the outer side surfaces of the upper and lower ends of the sliding door. When the door and window are closed, the active rack pushes the sealing strip to fit tightly with the sliding door through power transmission with the first gear transmission mechanism, and the side of the sliding door is in contact with the sealing strip. The sealing strips are adsorbed by magnetic attraction; sealing plates are provided on the end surfaces at the upper and lower ends of the sliding door, and the bottom of the sealing plate is connected to an elastic member for pushing the sealing plate upward, and a second gear transmission mechanism is provided on the upper and lower sides of the sliding door cavity, and the second gear transmission mechanism is connected to the sealing plate, and a torsion spring is installed on the second gear transmission mechanism, and push rods are provided on the upper and lower sides of the sealing strip, and when the doors and windows are closed, the push rod pushes the sealing plate upward to seal through power transmission with the second gear transmission mechanism; when the doors and windows are opened, the torsion spring rotates to drive the sealing plate to compress the elastic member and reset itself.

[0006] Furthermore, the first gear transmission mechanism includes a first gear that is rotatably arranged in the door and window auxiliary frame through a rotating shaft, the first gear cooperates with the active rack, a slide groove with grease is provided in the door and window auxiliary frame, a first rack is slidably arranged in the slide groove, the first rack is connected to the sealing strip through an L-shaped connecting rod, and a limit block is provided at the tail of the first rack.

[0007] The cam is secured to the upper and lower sides of the sliding door, and the cam is secured to the lower side of the sliding door, wherein the cam is secured to the lower side of the sliding door, and the cam is secured to the lower side of the sliding door.

[0008] Furthermore, the magnetic attraction between the side of the sliding door and the sealing strip is greater than the rotational elastic force of the torsion spring, and the rotational elastic force of the torsion spring is greater than the rebound force of the elastic member.

[0009] Furthermore, the elastic member is a long rubber spring, which is bonded to the bottom of the sealing plate. Both ends of the elastic member are shorter than both ends of the sealing plate, thereby forming step surfaces on the upper and lower end faces of the sliding door.

[0010] Furthermore, the elastic member is a spring, which is respectively embedded in the upper and lower ends of the sliding door. The elastic member is connected to the bottom of the sealing plate. The outer side of the sealing plate is bonded with foam material. The sealing plate is stepped, thereby forming step surfaces on the upper and lower end faces of the sliding door.

[0011] Furthermore, the outer layer of the sealing strip is made of rubber material, and the sealing strip includes a rectangular strip, one side of which is connected to a raised semicircular strip for embedding into the side of the sliding door, and a cavity is opened in the sealing strip, and an iron rod is sealed in the cavity.

[0012] Furthermore, the sealing strip includes a rectangular strip portion and a raised semicircular portion. The sealing strip is made of a magnetic rubber composite material, and the magnetic rubber composite material is silicone rubber mixed with ferrite powder.

[0013] Furthermore, a magnetic plate is provided on the side of the sliding door that cooperates with the sealing strip, and a groove that cooperates with the sealing strip is provided on the magnetic plate.

[0014] Furthermore, guide rods inserted into the sliding door are provided at the bottoms of both ends of the sealing plate. The sealing plate is made of aluminum alloy, and elastic foam material is bonded to the top surface of the sealing plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The first gear mechanism and the active rack automatically push the sealing strip into close contact with the side of the sliding door when closing. Combined with magnetic attraction, this creates a dual mechanical and magnetic seal, effectively preventing air and rainwater infiltration. The second gear mechanism and the elastic member work together to push the sealing plate upward, filling the gap between the upper and lower ends of the sliding door and the door and window frame. This creates a "side and end" seal, significantly reducing indoor heat leakage in winter and outdoor heat intrusion in summer, thereby reducing heating and cooling energy consumption.

[0016] 2. The sealing strip is made of a magnetic rubber composite material (such as silicone rubber infused with ferrite powder) or a rubber material filled with iron rods. Silicone rubber itself has low thermal conductivity, and combined with the internal iron rods / ferrite powder filling, it not only enhances magnetic adhesion but also forms an insulating buffer layer to reduce heat conduction. The top surface of the sealing plate is bonded with a foam material, forming a "rigid + flexible" insulation combination with the aluminum alloy substrate, further preventing end-face thermal bridges.

[0017] 3. The symmetrical arrangement of the segmented rack and the double rack (set at the one-third and two-thirds positions of the sealing plate) ensures that the sealing plate is evenly stressed, avoids tilting or twisting, ensures parallel fit with the door and window frames, and eliminates gaps. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the side of the door and window frame of the present invention; Figure 3 This is a cross-sectional view of the first gear transmission mechanism of the present invention installed in the door and window auxiliary frame; Figure 4 This is a cross-sectional view of the right half of the sliding door after closing; Figure 5 This is a schematic diagram of the right half of the sliding door of the present invention being opened; Figure 6 Schematic diagram of the connection between the second gear transmission mechanism and the sealing plate in the present invention; Figure 7 Schematic diagram of the sealing plate and the elastic member in Example 1; Figure 8 Schematic diagram of the sealing plate and the elastic member in the second embodiment; Figure 9 Schematic diagram of the sealing strip in Example 3; Figure 10 Schematic diagram of the sealing strip, magnetic plate and sliding door in Example 4.

[0019] In the figure: 1-door and window frame, 2-sliding door, 3-first gear transmission mechanism, 4-sealing strip, 5-active rack, 6-sealing plate, 7-elastic member, 8-second gear transmission mechanism, 9-torsion spring, 10-guide rod, 21-magnetic plate, 31-first gear, 32-first rack, 41-push rod, 42-rectangular bar, 43-semicircular bar, 81-first guide block, 82-segmented rack, 83-fixed column, 84-second gear, 85-second guide block, 86-second rack, 321-limiting block. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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 without making creative efforts are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0022] Combine Figures 1 to 10 The highly airtight aluminum alloy door and window shown in the figure comprises a door and window attachment frame 1, which is arranged in the wall of the door and window opening of the building, a sliding door 2 is slidably connected in the door and window attachment frame 1, and the sliding door 2 is provided with two door panels, and a cavity is provided between the two door panels. The upper and lower ends of the inner side of the door and window attachment frame 1 are both equipped with a first gear transmission mechanism 3, and a sealing strip 4 is connected to the first gear transmission mechanism 3. The outer side surfaces of the upper and lower ends of the sliding door 2 are provided with active racks 5. When the door and window are closed, the active rack 5 pushes the sealing strip 4 to fit tightly with the sliding door 2 through power transmission with the first gear transmission mechanism 3, and the side of the sliding door 2 and the sealing strip 4 are connected by a force. Magnetic attraction; sealing plates 6 are provided on the upper and lower end faces of the sliding door 2, and the bottom of the sealing plate 6 is connected with an elastic part 7 for pushing the sealing plate 6 upward. Second gear transmission mechanisms 8 are provided on the upper and lower sides of the cavity of the sliding door 2, and the second gear transmission mechanism 8 is connected to the sealing plate 6. A torsion spring 9 is installed on the second gear transmission mechanism 8, and push rods 41 are provided on the upper and lower sides of the sealing strip 4. When the doors and windows are closed, the push rod 41 pushes the sealing plate 6 upward to seal through power transmission with the second gear transmission mechanism 8; when the doors and windows are opened, the torsion spring 9 rotates to drive the sealing plate 6 to compress the elastic part 7 and reset itself.

[0023] like Figure 3As shown, the first gear transmission mechanism 3 includes a first gear 31 which is arranged in the door and window auxiliary frame 1 through a rotating shaft, the first gear 31 cooperates with the active rack 5, a grease-filled slide groove is provided in the door and window auxiliary frame 1, a first rack 32 is slidably provided in the slide groove, the first rack 32 is connected to the sealing strip 4 through an L-shaped connecting rod, and a limit block 321 is provided at the tail of the first rack 32; when the sliding door 2 is pulled to the right to close the door and window, the two active racks 5 at the top and bottom of the sliding door 2 will mesh with the first gear 31 and drive the two first racks 32 to move. A gear 31 rotates, and then the first gear 31 drives the first rack 32 to move to the left, thereby pushing the sealing strip 4 to the left and closing with the side of the sliding door 2. At this time, the front half of the sealing strip 4 extends out and protrudes from the side of the door and window auxiliary frame 1, while the back half of the sealing strip 4 is still in the door and window auxiliary frame 1, thereby avoiding air leakage and sound transmission from the sealing strip 4; and the limit block 321 limits the moving distance of the sealing strip 4 to prevent the sealing strip 4 from sliding out of the door and window auxiliary frame 1 due to the magnetic force when the sliding door 2 is pulled to the right.

[0024] like Figure 4 and Figure 6 As shown, the second gear transmission mechanism 8 is symmetrically arranged on the upper and lower sides of the cavity, and the second gear transmission mechanism 8 includes a first guide block 81 installed in the cavity, and the first guide block 81 is provided with a segmented rack 82 for horizontal sliding on the sliding door 2. The segmented rack 82 is consistent with the axis of the push rod 41 for power transmission; the segmented rack 82 includes two separately arranged teeth, and a fixed column 83 is provided above the two teeth corresponding to the two teeth in the cavity. One end of the fixed column 83 is rotatably provided with a second gear 84 that is transmission-connected to the segmented rack 82, and a torsion spring 9 is sleeved on the fixed column 83. The two ends of the torsion spring 9 are respectively connected to the second gear 84 and the door panel. A second guide block 85 is provided on one side of the second gear 84, and a second rack 86 that is meshed with the second gear 84 is vertically slidably provided on the second guide block 85. The second rack 86 passes through the sliding door 2 and is connected to the sealing plate 6; When the sliding door 2 is pulled to the right and closed, as mentioned above, the active rack 5 pushes the sealing strip 4 to fit tightly with the sliding door 2 through the power transmission with the first gear transmission mechanism 3. In the process of the sealing strip 4 moving to the left, the push rod 41 on the sealing strip 4 will push the segmented rack 82. In the process of the segmented rack 82 moving to the left, the teeth at both ends thereof are respectively engaged with the second gear 84, thereby driving the second gear 84 to rotate. As a result, the second gear 84 breaks through the elastic force limit of the torsion spring 9 and drives the second rack 86 connected to it to move upward. The second rack 86 thereby pushes the sealing plate 6 upward, and the elastic member 7 relies on the elastic force to strengthen the upward thrust on the sealing plate 6, thereby sealing the upper and lower ends of the sliding door 2 respectively, thereby enhancing the sound insulation, waterproof and windproof effects of the doors and windows; in addition, in the movement of the segmented rack 82 and the second rack 86, the first guide block 81 and the second guide block 85 respectively guide the movement of the two. After the sliding door 2 is closed, a magnetic plate 21 is provided on the side of the sliding door 2 that cooperates with the sealing strip 4, and a groove is provided on the magnetic plate 21 that cooperates with the sealing strip 4; the sealing strip 4 attracts the sliding door 2 through magnetic attraction, and the magnetic attraction force is greater than the rotational elastic force of the torsion spring 9, so that the sealing plate 6 can always support the door and window frames 1 at both ends after the sliding door 2 is closed.

[0025] When the sliding door 2 is pulled to the left to open, manpower breaks through the limitation of the magnetic attraction, and the active rack 5 drives the first gear 31 to rotate, so that the first rack 32 drives the sealing strip 4 to recover and reset. While the sliding door 2 is being pulled open, the torsion spring 9 can rotate under the action of the elastic force, thereby driving the second gear 84 to rotate, and the second gear 84 drives the segmented rack 82 to reset to the right; in addition, the second gear 84 drives the second rack 86 to move downward, thereby driving the sealing plate 6 to reset downward. Since the rotational elastic force of the torsion spring 9 is greater than the elastic force of the elastic member 7, the sealing plate 6 presses down on the elastic member 7 during the reset process, so that the two can accurately reset and return.

[0026] like Figure 4 As shown, the two second racks 86 are respectively arranged at the positions of one-third and two-thirds of the sealing plate 6, and one end of the two second racks 86 is connected to the bottom of the sealing plate 6; wherein, the position distribution of one-third and two-thirds makes the thrust application points of the two second racks 86 symmetrical with the central axis of the sealing plate 6. When the second gear transmission mechanism 8 pushes the racks to lift the sealing plate 6 upward, the thrusts at both ends form a uniform torque, preventing the sealing plate 6 from tilting or twisting due to excessive force on one side, ensuring that the sealing plate is parallel to the end face of the door and window frame 1, and avoiding the generation of gaps; as shown Figure 6As shown, the bottom of both ends of the sealing plate 6 are provided with guide rods 10 inserted into the sliding door 2. The guide rods 10 guide the sealing plate 6 when it moves up and down. The position design of the double racks forms a stable structure of "two points and one surface" with the guide rods 10. The guide rods 10 limit the left and right deviations, and the thrust points of the double racks limit the pitch deviations, ensuring that the sealing plate 6 moves accurately in the vertical direction to avoid dislocation of the sealing surface due to shaking.

[0027] Example 1 like Figure 6-7 As shown, the elastic member 7 is a long rubber spring, which is bonded to the bottom of the sealing plate 6. The two ends of the elastic member 7 are shorter than the two ends of the sealing plate 6, thereby forming step surfaces on the upper and lower end faces of the sliding door 2; when the sliding door 2 is closed, the rubber spring rebounds and continuously applies an upward thrust to the sealing plate 6, so that the sealing plate 6 maintains close contact with the door and window frame 1, filling the tiny gap, preventing sound from propagating through the air gap, forming a physical sound insulation barrier, and improving the sound insulation performance. The sealing plate 6 is made of aluminum alloy, which has the characteristics of high strength, sufficient rigidity and corrosion resistance. It is convenient to connect with the door and window frame 1 and the internal transmission mechanism (such as the second gear transmission mechanism 8), ensure structural stability, and adapt to the working conditions of frequent opening and closing of doors and windows; in addition, the top surface of the sealing plate 6 is bonded with elastic foam material, and the foam material can be selected from PU foam (polyurethane) or EPDM foam. Adding foam material to the top surface of the aluminum alloy sealing plate 6 can significantly enhance the sound insulation effect. Its advantages are filling gaps, absorbing sound energy, and forming a coordinated sealing system with the elastic member 7 in the document. During implementation, weather-resistant foam material can also be selected, and the thickness can be controlled to adapt to the transmission mechanism. For example: the foam thickness is 1-3mm to avoid excessive resistance when the sealing plate is lifted due to excessive thickness, affecting the normal operation of the second gear transmission mechanism 8.

[0028] Example 2 like Figure 8 As shown, the elastic member 7 is a spring, and the elastic member 7 is respectively embedded in the upper and lower ends of the sliding door 2. The elastic member 7 is connected to the bottom of the sealing plate 6, and the outer side of the sealing plate 6 is bonded with foam material. The sealing plate 6 is stepped, thereby forming step surfaces on the upper and lower end faces of the sliding door 2; in this embodiment, the sealing plate 6 is made of aluminum alloy as a whole, and the spring is embedded in the inside of the sliding door 2 to avoid external wear and tear and extend the service life; the stepped sealing plate 6 cooperates with the step surface to enhance the structural stability; and the foam material bonded on the outer side of the sealing plate 6 is PU foam (polyurethane) or EPDM foam; it makes up for the sealing shortcomings of the rigid material of aluminum alloy through the triple mechanism of "elastic sound absorption + dynamic filling + buffer protection", and cooperates with the stepped structure and embedded springs to ultimately achieve a comprehensive improvement in sound insulation, waterproofness and windproof performance.

[0029] In addition, similarly, in this embodiment, the sealing plate 6 is made of aluminum alloy, and the top surface is bonded with foam material to achieve the same effect as in the first embodiment.

[0030] Example 3 like Figure 9 As shown, the outer layer of the sealing strip 4 is made of rubber material, which can be silicone rubber. The sealing strip 4 includes a rectangular strip 42, and one side of the rectangular strip 42 is connected to a raised semicircular strip 43 for embedding into the side of the sliding door 2. A cavity is opened in the sealing strip 4, and the cavity is sealed and filled with an iron rod; the iron rod in the sealing strip 4 cooperates with the magnetic plate 21 on the sliding door 2 to enhance the fit of the sealing surface through magnetic adsorption to prevent air leakage and sound transmission through the gap; the combined design of the rectangular strip 42 and the semicircular strip 43 enables the semicircular strip 43 to be embedded in the groove of the sliding door 2 to form a mechanical position, which works together with the magnetic attraction to improve the sealing reliability. The combination of rubber and iron rod forms a heat-insulating buffer layer to block the thermal bridge between the sliding door and the door and window frame, thereby reducing the heat transfer efficiency; in addition, when the sliding door 2 is closed, the semicircular strip 43 protrudes from the side of the door and window frame 1, while the rectangular strip 42 still exists in the door and window frame 1.

[0031] Regarding the problem that the iron rod in the sealing strip 4 may rust due to oxidation in a humid environment, resulting in a decrease in magnetic permeability, thereby weakening the magnetic attraction with the magnetic plate 21 and affecting the sealing effect: Replace the iron rod with 304 or 316 stainless steel. Stainless steel contains elements such as chromium and nickel, and a passivation film is easily formed on the surface, which has strong corrosion resistance. In addition, 304 stainless steel still has a certain degree of magnetism (although weaker than pure iron, it is enough to maintain magnetic attraction), which can meet the magnetic attraction requirements.

[0032] (2) A zinc layer or nickel layer is electroplated on the surface of the iron rod. The zinc layer prevents the iron from rusting through the sacrificial anode protection principle, and the nickel layer forms a dense oxide film. Both do not affect the magnetic properties.

[0033] Example 4 like Figure 10 As shown, the sealing strip 4 includes a rectangular strip portion and a raised semicircular portion. The sealing strip 4 is a magnetic rubber composite material, which is silicone rubber mixed with ferrite powder. Compared with Example 3, the ferrite powder is compounded with silicone rubber, so that the sealing strip 4 itself has long-lasting magnetism, and there is no need to additionally fill it with an iron rod. The silicone rubber material is resistant to high and low temperatures and aging. The magnetic rubber composite material has good elasticity and flexibility and can fit tightly to the surface of the sliding door. At the same time, the sound insulation effect of silicone rubber is better than that of ordinary rubber, which can further reduce noise transmission. The composite material is integrally formed without the need for a complex structure. It fits tightly with the groove of the magnetic plate 21, reducing maintenance costs and extending the overall service life of the doors and windows. In addition, when the sliding door 2 is closed, the semicircular portion protrudes from the side of the door and window frame 1, while the rectangular strip portion still exists in the door and window frame 1.

[0034] Regarding the hardness of the sealing strip 4 in this embodiment, ferrite powder (e.g., permanent ferrite) is inherently hard ceramic particles. When added to silicone rubber, it significantly increases the composite's stiffness. While the silicone rubber matrix retains a certain degree of elasticity, allowing the sealing strip to deform slightly when subjected to the friction of the sliding door, the ferrite powder's rigid framework prevents excessive bending. Consequently, the sealing strip 4 will not bend due to insufficient hardness when the door is opened or closed.

[0035] In the third and fourth embodiments, the magnitude of the magnetic attraction force between the magnetic plate 21 and the sealing strip 4 can be controlled by, on the one hand, controlling the thickness or composition of the rubber material in the sealing strip 4, and on the other hand, controlling the magnetic force of the magnetic plate 21 to control the magnetic attraction force between the two.

[0036] Working principle: 1. Sealing process when doors and windows are closed When the sliding door 2 slides in the closing direction, the active racks 5 at its upper and lower ends engage with the first gear 31 in the door and window frame 1, driving the first gear 31 to rotate; the first gear 31 drives the first rack 32 to slide in the slide groove, and pushes the sealing strip 4 to move toward the side of the sliding door through the L-shaped connecting rod, so that the semicircular strip 43 of the sealing strip 4 is embedded in the groove on the side of the sliding door 2, and the rectangular strip 42 fits tightly with the side; the iron rod or magnetic rubber in the sealing strip 4 generates a magnetic attraction with the sliding door magnetic plate 21, further fixing the sealing strip 4 to prevent air leakage and sound transmission.

[0037] When the sealing strip 4 moves, the push rods 41 on its upper and lower sides push the segmented rack 82 to slide horizontally in the first guide block 81; the teeth of the segmented rack 82 engage with the second gear 84, driving the second gear 84 to rotate to overcome the elastic force of the torsion spring 9, and then driving the second rack 86 to move vertically upward along the second guide block 85; the second rack 86 lifts the sealing plate 6, and at the same time, the elastic member 7 (rubber spring or embedded spring) pushes the sealing plate 6 upward with the help of elastic force, so that its top surface is in close contact with the end face of the door and window frame 1, forming an end face seal.

[0038] 2. Reset process when doors and windows are opened As the sliding door 2 slides toward the open position, the active rack 5 reverses the rotation of the first gear 31, causing the first rack 32 to retract. The sealing strip 4 then returns to the interior of the door and window frame 1, freeing it from the magnetic plate 21. The push rod 41 disengages from the segmented rack 82, releasing the torsion spring 9, which in turn rotates the second gear 84 in the opposite direction, pulling the second rack 86 downward. Driven by the second rack 86, the sealing plate 6 compresses the elastic member 7 and returns downward along the guide rod 10 to the interior of the sliding door 2, ready for the next closing.

[0039] It should be noted that the sliding door in the present invention can be a single sliding door or a Figure 1The double sliding door in the embodiment of the present invention has the same structure as the left and right sliding doors. In addition, the structure adopted by the present invention is also applicable to sliding windows.

[0040] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0041] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A highly airtight aluminum alloy door and window, comprising a door and window attachment frame (1), wherein the door and window attachment frame (1) is arranged in a wall of a door and window opening of a building, wherein a sliding door (2) is slidably connected to the door and window attachment frame (1), wherein the sliding door (2) is provided with two door panels, and a cavity is provided between the two door panels, wherein the sliding door (2) is characterized in that: The upper and lower ends of the inner side of the door and window frame (1) are both provided with a first gear transmission mechanism (3), and a sealing strip (4) is connected to the first gear transmission mechanism (3). The outer side surfaces of the upper and lower ends of the sliding door (2) are provided with active racks (5). When the door and window are closed, the active rack (5) pushes the sealing strip (4) to fit tightly with the sliding door (2) through power transmission with the first gear transmission mechanism (3), and the side of the sliding door (2) and the sealing strip (4) are adsorbed by magnetic attraction; the end surfaces of the upper and lower ends of the sliding door (2) are provided with sealing plates (6), and the bottom of the sealing plate (6) is connected with a An elastic member (7) that pushes the sealing plate (6) upward is provided, and a second gear transmission mechanism (8) is provided on both upper and lower sides of the cavity of the sliding door (2). The second gear transmission mechanism (8) is connected to the sealing plate (6). A torsion spring (9) is installed on the second gear transmission mechanism (8). Push rods (41) are provided on the upper and lower sides of the sealing strip (4). When the door and window are closed, the push rod (41) pushes the sealing plate (6) upward to seal by power transmission with the second gear transmission mechanism (8); when the door and window are opened, the torsion spring (9) rotates to drive the sealing plate (6) to compress the elastic member (7) and reset itself.

2. The highly airtight aluminum alloy door and window according to claim 1, characterized in that: The first gear transmission mechanism (3) includes a first gear (31) that is rotatably arranged in the door and window auxiliary frame (1) via a rotating shaft, the first gear (31) cooperates with the active rack (5), a grease-containing slide groove is provided in the door and window auxiliary frame (1), a first rack (32) is slidably provided in the slide groove, the first rack (32) is connected to the sealing strip (4) via an L-shaped connecting rod, and a limit block (321) is provided at the tail of the first rack (32).

3. The highly airtight aluminum alloy door and window according to claim 2, characterized in that: The second gear transmission mechanism (8) is symmetrically arranged on the upper and lower sides of the cavity, and the second gear transmission mechanism (8) includes a first guide block (81) installed in the cavity, and the first guide block (81) is provided with a segmented rack (82) that slides horizontally on the sliding door (2), and the segmented rack (82) is aligned with the axis of the push rod (41) for power transmission; the segmented rack (82) includes two separately arranged teeth, and a fixed column (83) is provided above the two teeth in the cavity, and one end of the fixed column (83) is rotatably provided with a second gear (84) that is transmission-connected to the segmented rack (82). The torsion spring (9) is sleeved on the fixed column (83), and the two ends of the torsion spring (9) are respectively connected to the second gear (84) and the door panel, and a second guide block (85) is provided on one side of the second gear (84). The second guide block (85) is vertically slidably provided with a second rack (86) meshing with the second gear (84), and the second rack (86) passes through the sliding door (2) and is connected to the sealing plate (6); two second racks (86) are respectively arranged at one-third and two-thirds of the sealing plate (6), and one end of the two second racks (86) is connected to the bottom of the sealing plate (6).

4. The highly airtight aluminum alloy door and window according to claim 3, characterized in that: The magnetic attraction force between the side of the sliding door (2) and the sealing strip (4) is greater than the rotational elastic force of the torsion spring (9), and the rotational elastic force of the torsion spring (9) is greater than the rebound force of the elastic member (7).

5. The highly airtight aluminum alloy door and window according to claim 1, characterized in that: The elastic member (7) is a long rubber spring, and the elastic member (7) is bonded to the bottom of the sealing plate (6). The two ends of the elastic member (7) are shorter than the two ends of the sealing plate (6), thereby forming step surfaces on the upper and lower end surfaces of the sliding door (2).

6. The highly airtight aluminum alloy door and window according to claim 1, characterized in that: The elastic member (7) is a spring, and the elastic member (7) is respectively embedded in the upper and lower ends of the sliding door (2). The elastic member (7) is connected to the bottom of the sealing plate (6), and the outer side surface of the sealing plate (6) is bonded with a foam material. The sealing plate (6) is stepped, thereby forming step surfaces on the upper and lower end surfaces of the sliding door (2).

7. The highly airtight aluminum alloy door and window according to claim 1, characterized in that: The outer layer of the sealing strip (4) is made of rubber. The sealing strip (4) comprises a rectangular strip (42). One side of the rectangular strip (42) is connected to a raised semicircular strip (43) for embedding into the side of the sliding door (2). A cavity is provided in the sealing strip (4), and an iron rod is sealed in the cavity.

8. The highly airtight aluminum alloy door and window according to claim 1, characterized in that: The sealing strip (4) comprises a rectangular strip portion and a raised semicircular portion. The sealing strip (4) is a magnetic rubber composite material, and the magnetic rubber composite material is silicone rubber mixed with ferrite powder.

9. The highly airtight aluminum alloy door and window according to claim 7 or 8, characterized in that: A magnetic plate (21) is provided on the side of the sliding door (2) that cooperates with the sealing strip (4), and a groove that cooperates with the sealing strip (4) is provided on the magnetic plate (21).

10. The highly airtight aluminum alloy door and window according to claim 5 or 6, characterized in that: The bottoms of both ends of the sealing plate (6) are provided with guide rods (10) inserted into the sliding door (2). The sealing plate (6) is made of aluminum alloy, and the top surface of the sealing plate (6) is bonded with elastic foam material.

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