Composite water guide and seal structure for door and window of high window-wall ratio building outer wall

Abstract

The utility model relates to building outer wall waterproof technology field, concretely relates to a kind of composite water guide sealing structure of high window wall ratio building outer wall door and window closing, it includes aluminium alloy batten, EPDM rubber sealing layer and PVC water guide plate that are sequentially arranged from outside to inside, and composite anchoring connection is realized by self-tapping screw penetration sealing layer. Among them, aluminium alloy batten surface is equipped with continuous sawtooth water guide groove, groove bottom is equipped with flow guide slope, can actively guide rainwater to discharge, sealing layer is built-in wave shape deformation compensation cavity, two sides are equipped with barbed waterstop, give consideration to elastic sealing and deformation adaptability, water guide plate is embedded in wall, terminal end connects building drainage system, water guide groove and water guide plate form inside and outside double drainage path. The utility model integrates water guide, sealing and deformation adaptability, and the use of EPDM rubber and fluorocarbon coating improves sealing life, and it is suitable for the outer wall door and window waterproof engineering of high window wall ratio building.

Description

Technical Field

[0001] This utility model relates to the field of building exterior wall waterproofing technology, specifically, to a composite water-guiding and sealing structure for the closing of doors and windows in building exterior walls with a high window-to-wall ratio. Background Technology

[0002] In recent years, with the increasing demands for modern architectural aesthetics and lighting, high window-to-wall ratio buildings (such as glass curtain walls and panoramic floor-to-ceiling windows) have been widely used in commercial complexes and high-end residences. These buildings achieve a sense of spatial transparency through large light-transmitting surfaces, but the exposed area of ​​the joints between exterior doors and windows and the wall structure increases significantly, making them high-risk areas for rainwater infiltration. Traditional waterproofing solutions often use metal strips combined with sealant: the metal strips are used to fix the joints between the window frame and the wall, and the sealant fills the gaps to achieve a seal. This solution relies on the elastic deformation ability of the sealant to prevent water intrusion; its process is simple and low-cost, and it was once the mainstream practice in the industry.

[0003] However, with increasing building heights, more frequent extreme weather events, and stricter energy-saving requirements, the traditional construction method using metal strips and sealant has gradually revealed systemic defects. Firstly, metal strips only serve a fixing function and lack active water-draining capabilities, allowing rainwater to easily accumulate at the joints, creating a potential leakage risk. This is especially true during heavy or continuous rainfall, where the traditional structure cannot effectively drain accumulated water. Furthermore, the difference in thermal expansion and contraction between window frames and wall materials can easily cause structural deformation. Traditional rigid connections cannot absorb displacement stress, leading to seal failure or structural cracking. Summary of the Invention

[0004] The purpose of this utility model is to provide a composite water-guiding and sealing structure for the joints of doors and windows in buildings with a high window-to-wall ratio, so as to solve the problems of high leakage rate and poor deformation adaptability of the joints of doors and windows in buildings with a high window-to-wall ratio.

[0005] To achieve the above objectives, a composite water-guiding and sealing structure for the termination of doors and windows in the exterior walls of buildings with a high window-to-wall ratio is provided. This structure includes an aluminum alloy pressure strip, a sealing layer, and a water-guiding plate arranged sequentially from the outside to the inside. The aluminum alloy pressure strip is connected to the inner water-guiding plate via fasteners that penetrate the sealing layer. The aluminum alloy pressure strip is set on the outside of the joint between the window frame and the wall, and its surface is provided with a continuous sawtooth-shaped water guide groove. The sealing layer is an elastic element with a corrugated deformation compensation cavity.

[0006] In the above technical solution, the continuous sawtooth water channel of the aluminum alloy pressure strip can quickly disperse and discharge a large amount of rainwater, reducing the risk of water accumulation at the joints. The wave-shaped deformation compensation cavity of the elastic sealing layer absorbs the displacement deformation of the building structure caused by temperature difference, settlement or wind load through its compressible shape, avoiding the fracture failure of rigid materials due to stress concentration. The composite anchoring connection that runs through three layers not only ensures the tight fit between each layer, but also forms an overall force system through mechanical fixation, preventing leakage caused by single-layer detachment. Through multi-level collaborative design, dual control of waterproof sealing and structural deformation is achieved.

[0007] Based on this, the water guide channel is a sawtooth shape with alternating V-shaped and stepped sections. The bottom of the water guide channel is provided with a guide slope that slopes outward towards the building. The V-shaped channel opening increases the water flow contact area and accelerates the lateral diffusion of rainwater by utilizing the surface tension effect. The stepped section forms local turbulence through vertical drop, which disrupts the continuity of the water film and prevents rainwater from flowing back along the channel opening. At the same time, the bottom of the water guide channel is provided with a guide slope that slopes outward towards the building at 5°-10°. Combined with the effect of gravity, this ensures that rainwater flows in one direction and is discharged quickly.

[0008] Furthermore, the water guide plate is embedded in the wall, and a drain pipe is connected to the outlet of the water guide plate.

[0009] In another technical solution, the sealing layer has barbed waterstop strips on both sides of the contact surface. The waterstop strips include a first protrusion towards the window frame and a second protrusion towards the wall.

[0010] In this technical solution, when the sealing layer is installed under pressure, the first protrusion and the window frame, and the second protrusion and the wall form a multi-point engagement through the elastic rebound force of EPDM rubber. Even if the joint undergoes slight displacement due to deformation, the hook structure can still maintain a tight fit of the sealing interface.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. In the composite water-guiding and sealing structure at the junction of the high window wall and the exterior wall doors and windows of the building, a continuous sawtooth water-guiding groove is set on the surface of the aluminum alloy pressure strip, and a guide slope inclined towards the outside of the building is set at the bottom of the water-guiding groove. At the same time, a PVC water-guiding plate is embedded in the inner layer between the wall and the window frame, and the end is connected to the building drainage system. This forms a dual drainage path of water-guiding groove and water-guiding plate, which can actively guide rainwater to drain quickly, improve drainage efficiency, effectively prevent rainwater from stagnating at the joints, and thus reduce the risk of leakage.

[0012] 2. In the composite water-guiding and sealing structure where the high window wall meets the exterior wall doors and windows, the sealing layer is equipped with a wave-shaped deformation compensation cavity. This cavity is formed by alternating arc-shaped protrusions and depressions, allowing for a deformation of ±5mm, which can better adapt to the deformation caused by thermal expansion and contraction of different materials. Simultaneously, the aluminum alloy pressure strip is anchored to the water-guiding plate with self-tapping screws, sandwiching an EPDM sealing layer. This composite anchoring method, combined with the deformation compensation cavity, further enhances the structure's adaptability to deformation, improves the overall structural stability, and reduces leakage problems caused by structural deformation.

[0013] 3. In the composite water-guiding and sealing structure where the high window wall meets the exterior wall doors and windows, a hook-shaped waterstop strip is installed on both sides of the sealing layer. The waterstop strip includes a first protrusion towards the window frame and a second protrusion towards the wall. This hook-shaped waterstop strip, together with the EPDM rubber elastic sealing layer, forms a multi-layer sealing structure, which can create a more effective sealing barrier at the joint, further preventing water penetration. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a structural schematic diagram of the cross-section of this utility model.

[0015] The meanings of the labels in the diagram are as follows: 1. Aluminum alloy pressure strip; 11. Water guide groove; 2. Sealing layer; 21. Deformation compensation cavity; 22. Water stop strip; 221. First protrusion; 222. Second protrusion; 3. Water guide plate; 4. Drain pipe. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0019] Please see Figure 1 and Figure 2 As shown, the purpose of this embodiment is to provide a composite water-guiding and sealing structure for the termination of doors and windows in a building with a high window-to-wall ratio. It includes an aluminum alloy pressure strip 1, a sealing layer 2, and a water-guiding plate 3 arranged sequentially from the outside to the inside. The three are connected by self-tapping screws to form a composite anchoring connection, creating a coordinated water-guiding and sealing system. The aluminum alloy pressure strip 1 is located on the outside of the joint between the window frame and the wall. It is made of high-strength aluminum alloy material through an extrusion molding process. Its surface is designed with continuous serrated water-guiding grooves 11, with outwardly inclined guide slopes at the bottom of the grooves. A fluorocarbon coating is sprayed onto the surface to enhance weather resistance. The sealing layer 2 is made of EPDM rubber and is sandwiched between the aluminum alloy pressure strip 1 and the water-guiding plate 3. It has a wave-shaped deformation compensation cavity 21 inside, and barbed water-stop strips 22 are distributed on both sides of the contact surface. The water-stop strip 22 includes a first protrusion 221 extending towards the window frame and a second protrusion 222 extending towards the wall. The water guide plate 3 is made of PVC material and is embedded in the wall. Its end is connected to the building drainage system through the drainage pipe 4, forming a second drainage channel that works in conjunction with the water guide channel 11.

[0020] like Figure 1 As shown, the aluminum alloy strip 1 serves as the outermost protective and active water-guiding component. Its water-guiding channel 11 adopts a sawtooth design with alternating V-shapes and stepped shapes. The bottom of the channel is provided with a guiding slope of 5°-10° towards the outside of the building to guide rainwater flow outward. When rainwater flows along the surface of the window frame to the joint, the water-guiding channel 11 quickly disperses the water droplets through surface tension and gravity, and guides them to the outside of the building for discharge through the inclined surface, allowing rainwater entering the channel to be quickly guided away from the joint area in a specific direction. To improve weather resistance, the surface of the aluminum alloy strip 1 is treated with fluorocarbon coating to form a dense protective layer, effectively resisting ultraviolet radiation and atmospheric corrosion.

[0021] like Figure 2As shown, the sealing layer 2, serving as an intermediate functional layer, is an elastomer component made of EPDM rubber material through a molding process. It contains a wave-shaped deformation compensation cavity 21, with an alternating pattern of continuous arc-shaped protrusions and depressions in its cross-section. This special cavity structure provides the sealing layer 2 with elastic deformation capability in the vertical direction, enabling it to absorb the relative displacement between the window frame and the wall caused by temperature differences. On the two sides of the sealing layer 2 that contact the window frame and the wall, there are respectively barbed waterstop strips 22 made with molds, including a first protrusion 221 extending towards the window frame and a second protrusion 222 extending towards the wall. Through the elastic deformation of the rubber material, these strips form multi-point engagement with the barbs inside the aluminum profiles of the window frame and wall, constructing a sealing interface.

[0022] like Figure 1 and Figure 2 As shown, the water guide plate 3, as the core component of the innermost drainage system, is made of PVC material and formed by hot-melt welding. The water guide plate 3 is pre-embedded within the wall structure layer, with its main body extending to the window frame mounting surface. Its end connects to the building drainage pipe 4 via a special connector, forming a sealed connection. The surface of the water guide plate 3 is designed with slightly inclined water collection channels to collect water that has seeped into the inner layer and direct it to the drainage pipe 4. During installation, the edges of the water guide plate 3 overlap with the wall's waterproof layer to ensure the continuity of the drainage path.

[0023] The connections between the various components are achieved through a self-tapping screw anchoring system. During installation, the water guide plate 3 is first accurately embedded in the designated location in the wall. Then, the sealing layer 2 is laid flat at the joint between the window frame and the wall. Finally, the aluminum alloy pressure strip 1 is aligned with the drainage direction of the water guide channel 11. Self-tapping screws are then passed sequentially through the mounting holes of the aluminum alloy pressure strip 1 and the pre-drilled holes in the sealing layer 2, finally screwed into the threaded sleeve of the water guide plate 3. During tightening, the screw tightening force is controlled within a range that causes moderate compression deformation of the sealing layer 2, ensuring structural stability while preserving the deformation allowance of the elastomer. After mechanical fixing, the screw heads are sealed with sealant to form a complete waterproof closed loop. When a component needs maintenance, only the self-tapping screws need to be removed for layer-by-layer disassembly and replacement, without damaging the overall waterproof system.

[0024] Working principle: When rainwater impacts the building facade, the water guide channel 11 of the aluminum alloy strip 1 quickly guides most of the water flow to the outside of the building through its inclined guide surface. A small amount of water vapor that has penetrated the outer layer is blocked by the elastic sealing interface when it encounters the barbed water-stop strip 22 of the sealing layer 2, forming the first line of defense. A smaller amount of water that has penetrated into the middle layer is guided to the water guide plate 3 and guided to the drainage pipe 4 through the preset slope to be discharged into the building drainage system.

[0025] In terms of coping with structural deformation, the wave-shaped deformation compensation cavity 21 absorbs the relative displacement between the window frame and the wall through the elastic deformation of the arc structure. When thermal expansion and contraction occur, the wave structure of the sealing layer 2 can generate longitudinal expansion and contraction and lateral bending deformation, avoiding stress concentration caused by rigid connection. At the same time, a small displacement space is reserved in the mounting groove of the self-tapping screw in the water guide plate 3, allowing the aluminum alloy pressure strip 1 to slide moderately in the planar direction, further releasing structural deformation stress and avoiding the cracking problem caused by the difference in material expansion coefficients in traditional sealing structures.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A composite water-guiding and sealing structure for the termination of doors and windows on the exterior walls of buildings with a high window-to-wall ratio, comprising an aluminum alloy pressure strip (1), a sealing layer (2), and a water-guiding plate (3) arranged sequentially from the outside to the inside, characterized in that: The aluminum alloy pressure strip (1) is compositely anchored to the inner water guide plate (3) by fasteners penetrating the sealing layer (2), wherein: The aluminum alloy pressure strip (1) is set on the outside of the joint between the window frame and the wall, and its surface is provided with a continuous sawtooth-shaped water guide groove (11). The sealing layer (2) is an elastic element and is provided with a wave-shaped deformation compensation cavity (21).

2. The composite water-guiding and sealing structure for the termination of doors and windows in the exterior walls of buildings with high window walls as described in claim 1, characterized in that: The water guide channel (11) is a sawtooth shape with alternating V-shaped and stepped sections.

3. The composite water-guiding and sealing structure for the termination of doors and windows in the exterior walls of buildings with high window walls as described in claim 2, characterized in that: The bottom of the water guide channel (11) is provided with a guide slope that slopes outward toward the outside of the building.

4. The composite water-guiding and sealing structure for the termination of doors and windows in the exterior walls of buildings with high window walls as described in claim 3, characterized in that: The aluminum alloy pressure strip (1) is coated with a fluorocarbon coating.

5. The composite water-guiding and sealing structure for the termination of doors and windows in the exterior walls of buildings with high window walls as described in claim 1, characterized in that: The deformation compensation cavity (21) is formed by alternating arc-shaped protrusions and depressions.

6. The composite water-guiding and sealing structure for the termination of doors and windows in the exterior walls of buildings with high window walls as described in claim 1, characterized in that: The sealing layer (2) has barbed waterstop strips (22) on both sides of the contact surface. The waterstop strips (22) include a first protrusion (221) on the window frame side and a second protrusion (222) on the wall side.

7. The composite water-guiding and sealing structure for the termination of doors and windows in the exterior walls of buildings with high window-to-wall ratio as described in claim 1, characterized in that: The water guide plate (3) is embedded in the wall, and a drain pipe (4) is connected to the outlet of the water guide plate (3).

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