High-weather-resistance window sill drainage plate structure

Abstract

The utility model discloses a high weatherability's windowsill drainage board structure, including drainage unit, and the drainage bayonet groove of recessing inwards is equipped with to the window frame and is located outdoor one side, and the drainage bayonet groove is located below the water passage hole of window frame, and its inner top wall is equipped with L type buckle, and one end of drainage unit is through L type buckle and is connected with the drainage bayonet groove, and its other end extends to the outside of outer wall veneer, and its bottom end sets along the top end surface of outer wall veneer to reach the purpose of drainage. The utility model discloses a high weatherability's windowsill drainage board structure, and this drainage board structure adopts physical structure and is connected with window frame to solve the leakage caused by the high dependence on sealant in the prior art, prevent after sealant aging, and the drainage area that can be used is increased by the slope surface of the top of this drainage board structure to the water diversion, thereby making drainage more smooth and improving drainage capacity, and this drainage board structure does not need to use screw and other fasteners to fix, thereby reducing the difficulty of installation.

Description

Technical Field

[0001] This utility model relates to the field of window sill drainage technology, and in particular to a highly weather-resistant window sill drainage board structure. Background Technology

[0002] In building door and window engineering, window sill drainage boards (also known as window sill flashing boards or drainage boards) are key waterproof structural components. Installed on the outer bottom of the window frame, they guide rainwater or condensation that seeps into the window frame through gaps and drains smoothly away from the wall, preventing rainwater backflow, wall leakage, and water seepage into the insulation layer. Their performance, especially the sealing at structural points, drainage reliability, and long-term weather resistance, directly affects the building's service life and waterproofing effectiveness.

[0003] Current window sill drainage board structures generally suffer from significant weather resistance deficiencies. The core problem lies in the over-reliance on external sealants for joint sealing. For example, the existing technology "Window Sill Waterproof Structure" (CN217558102U) describes sealing the joint between the outdoor window sill edge board 4 and the window 2 with sealant 5. However, long-term exposure to sunlight and ultraviolet radiation, freeze-thaw cycles, and rainwater erosion significantly reduces the sealant's lifespan, making it prone to aging and failure, manifesting as cracking, shrinkage, and delamination, becoming a fundamental hidden danger for structural leakage. Traditional drainage boards have narrow drainage channels and lack a three-dimensional flow guiding structure, resulting in slow drainage speeds. For example, insufficient drainage slope or blocked drainage holes in bay windows can lead to water accumulation. Some drainage boards require support grids or bolts for fixation, increasing construction costs and difficulty. For instance, drainage board installation requires support grids to prevent geotextile sagging; and the existing technology "Window Sill Board Assembly" (CN209586032U) requires bolts as fasteners. These interconnected shortcomings together constitute the key bottleneck to the long-term waterproof reliability of window sill drainage boards, and are also the main reason for their insufficient weather resistance.

[0004] Therefore, the present invention, "A High Weather-Resistant Composite Window Sill Drainage Board Structure," is designed to address the aforementioned systemic defects. Its core objective is to significantly reduce reliance on easily aging sealants through innovative structural design, instead relying on physical structure to achieve long-lasting sealing; and to optimize the drainage path design of the structural area to ensure smooth drainage and prevent localized water accumulation. This results in high weather resistance and long-term reliability of the overall window sill drainage board structure. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a highly weather-resistant window sill drainage board structure.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] This utility model discloses a high weather-resistant window sill drainage board structure, comprising a main wall, a window sash, a window frame, and a window gasket. The window gasket is located at the top of the main wall, and an energy-saving sub-frame is provided at the top of the window gasket. The window frame is located at the top of the energy-saving sub-frame, and the window sash is movably located within the window frame. An insulation layer is provided on the outer surface of the main wall on the outdoor side, and an inner wall is provided on the outer surface of the main wall on the indoor side. An exterior wall finish is provided on the outer surface of the insulation layer. The structure also includes a drainage unit. The window frame on the outdoor side has an inwardly recessed drainage groove located below the water passage hole of the window frame, and an L-shaped buckle is provided on its inner top wall. One end of the drainage unit is engaged with the drainage groove through the L-shaped buckle, and the other end extends to the outer side of the exterior wall finish, with its bottom end set along the top surface of the exterior wall finish to achieve drainage.

[0008] As a preferred embodiment of this utility model, the drainage unit includes a main structure, a snap-fit ​​component, and a drip component. The snap-fit ​​component and the drip component are respectively located at one end of the main structure near the window frame and the other end away from the window frame. The snap-fit ​​component is adapted to and snaps into the drainage groove. The drip component extends to the outer side of the exterior wall finish. The bottom of the main structure contacts the top of the exterior wall finish, and its side contacts the side wall of the window frame on the outdoor side.

[0009] As a preferred technical solution of this utility model, the main structure is a component with a hollow triangular vertical cross section. Its shortest side contacts the side wall of the window frame on the outdoor side, the length of its second short side is adapted to the top width of the exterior wall finish and contacts the top of the exterior wall finish, and its longest side is located at the top for contact with water for drainage.

[0010] As a preferred technical solution of this utility model, the snap-fit ​​component includes a first flange, which is located at the top of the main structure near the window frame, and its end has an upwardly bent U-shaped snap-fit ​​wing. The top of the snap-fit ​​wing has a trapezoidal snap-fit ​​that matches the L-shaped snap-fit, so as to achieve a tight snap-fit ​​with the drainage groove.

[0011] As a preferred embodiment of the present invention, the dripping component includes a second flange, which is located at the top of the main structure at the end away from the window frame and extends downward at an angle, with a downwardly positioned dripping plate at its end.

[0012] As a preferred embodiment of this utility model, the top surface of the drainage unit is inclined from the window frame toward the outside, and the slope of the inclination is greater than or equal to 0.

[0013] As a preferred embodiment of this utility model, sealant is filled between the bottom end of the drainage unit and the top end of the exterior wall finish.

[0014] As a preferred embodiment of this utility model, the drainage unit is made of steel.

[0015] As a preferred embodiment of the present invention, the surface of the drainage unit is provided with an anti-corrosion layer, and the top surface of the unit is provided with a hydrophobic layer.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This drainage board structure uses a physical structure to connect with the window frame, thereby solving the problem of high dependence on sealant in the existing technology and preventing leakage after the sealant ages;

[0018] 2. This drainage board structure utilizes the slope at its top to guide water flow, thereby increasing the usable drainage area and making drainage smoother and improving drainage capacity.

[0019] 3. This drainage board structure does not require the use of screws or other fasteners for fixing, which reduces the difficulty of its installation. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is an enlarged view of point A of this utility model;

[0023] Figure 3 This is an enlarged view of section B of this utility model;

[0024] Figure 4 This is a schematic diagram of the overall structure of the drainage unit of this utility model;

[0025] Figure 5 This is a partial cross-sectional schematic diagram of the drainage unit of this utility model;

[0026] Figure 6 This is a diagram of a window sill structure in the prior art;

[0027] In the diagram: 1. Main wall; 2. Window sash; 3. Window frame; 4. Window gasket; 5. Energy-saving subframe; 6. Insulation layer; 7. Interior wall; 8. Exterior wall finish; 9. Drainage groove; 10. Drainage unit; 11. Main structure; 12. Connecting piece; 121. First flange; 122. Connecting wing; 123. Trapezoidal buckle; 13. Drip edge; 131. Second flange; 132. Drip plate; 14. Sealant; 15. Anti-corrosion layer; 16. Drainage layer; 17. Water passage hole; 18. L-shaped buckle. Detailed Implementation

[0028] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0029] In the attached diagram, all identical reference numerals refer to the same components.

[0030] Example 1:

[0031] like Figure 1 As shown, this utility model provides a high weather-resistant window sill drainage board structure, including a main wall 1, a window sash 2, a window frame 3, and a window pad 4. The window pad 4 is located at the top of the main wall 1, and an energy-saving subframe 5 is provided at the top of the window pad 4. The window frame 3 is located at the top of the energy-saving subframe 5. The window sash 2 is movably located inside the window frame 3. An insulation layer 6 is provided on the outer surface of the main wall 1 on the outdoor side, and an inner wall 7 is provided on the outer surface of the main wall 1 on the indoor side. An exterior wall finish 8 is provided on the outer surface of the insulation layer 6. The system also includes a drainage unit 10. The window frame 3 on the outdoor side has an inwardly recessed drainage groove 9, which is located below the water passage hole 17 of the window frame 3. An L-shaped buckle 18 is provided on its inner top wall. One end of the drainage unit 10 is engaged with the drainage groove 9 through the L-shaped buckle 18, and the other end extends to the outer side of the exterior wall finish 8. Its bottom end is set along the top surface of the exterior wall finish 8 to achieve drainage.

[0032] Among them, the windowsill adopts the following Figure 6 The structure shown is a structure in the prior art, or a similar structure, such as a window sill structure without an insulation layer;

[0033] The drainage unit 10 is installed outdoors. One end of the drainage unit 10 that connects to the drainage slot 9 is a snap-fit ​​end. During installation, the snap-fit ​​end of the drainage unit 10 is installed inside the drainage slot 9 and snaps into the L-shaped buckle 18 in the drainage slot 9. The water passage hole 17 is located on the outer side relative to the L-shaped buckle 18 to prevent the snap-fit ​​end of the drainage unit 10 from blocking the water passage hole 17 when it is installed. At the same time as the snap-fit ​​is completed, the other end of the drainage unit 10 is inclined downward towards the exterior wall finish 8 to form a drip end for dripping water. The top of the drainage unit 10 is a slope to facilitate drainage.

[0034] Specifically, when the windowsill needs drainage, water flows down along the outside of the window sash 2 and window frame 3 to the top slope of the drainage unit 10, or flows down from the water hole 17 of the window frame 3 to the top slope of the drainage unit 10, and then flows down through the drip end at the end of the drainage unit 10, thereby preventing water from accumulating between the drainage unit 10 and the exterior wall finish 8.

[0035] Example 2:

[0036] like Figure 1 As shown, the drainage unit 10 includes a main structure 11, a snap-fit ​​component 12, and a drip component 13. The snap-fit ​​component 12 and the drip component 13 are respectively located at one end of the main structure 11 near the window frame 3 and the other end away from the window frame 3. The snap-fit ​​component 12 is adapted to the drainage groove 9 and snaps into the drainage groove 9. The drip component 13 extends to the outside of the exterior wall finish 8. The bottom of the main structure 11 contacts the top of the exterior wall finish 8, and its side contacts the side wall of the window frame 3 on the outside side.

[0037] The main structure 11 is connected to the drainage groove 9 by the snap-fit ​​part 12, and the drip part 13 is used for end drainage. The bottom of the main structure 11 is in close contact with the top of the exterior wall cladding 8, and the side of its bottom is in close contact with the side wall of the frame 3 to prevent water from accumulating under the main structure 11, thereby improving the waterproofing ability.

[0038] Example 3:

[0039] like Figure 1 and 4 As shown, the main structure 11 is a component with a hollow triangular vertical cross section. Its shortest side contacts the side wall of the window frame 3 on the outdoor side. The length of its second short side matches the top width of the exterior wall finish 8 and contacts the top of the exterior wall finish 8. Its longest side is located at the top and is used to contact water for drainage.

[0040] Among them, the main structure 11 using hollow components can reduce weight and save the required materials;

[0041] The vertical cross-sectional shape of the main structure 11 is determined according to the shape between the exterior wall finish 8 and the outer wall of the window frame 3, so that the bottom of the main structure 11 can be adapted to the exterior wall finish 8 and the window frame 3.

[0042] In this embodiment, the vertical cross-section of the main structure 11 is a hollow triangle, with its longest side forming a lower slope at the outward end, thereby achieving the purpose of drainage.

[0043] Example 4:

[0044] like Figure 2-3As shown, the snap-fit ​​component 12 includes a first flange 121, which is located at the top of the main structure 11 near the window frame 3, and its end has an upwardly bent U-shaped snap-fit ​​wing 122. The top of the snap-fit ​​wing 122 has a trapezoidal snap-fit ​​123 that is adapted to the L-shaped snap-fit ​​18, so as to achieve a tight snap-fit ​​with the drainage groove 9.

[0045] Among them, the top of the U-shaped snap-fit ​​wing 122 formed by the upward bending of the first flange 121 is engaged with the L-shaped snap-fit ​​18 in the drainage slot 9 to achieve physical interlocking, form a mechanically locked sealing structure, and achieve the purpose of fixing the entire drainage unit 10.

[0046] The drip edge 13 includes a second flange 131, which is located at the top of the main structure 11 at the end away from the window frame 3 and extends downward at an angle, and has a downwardly positioned drip plate 132 at its end.

[0047] The second flange 131 has a larger inclination angle than the top slope of the main structure 11, and the drip plate 132 is set vertically downward or parallel to the side of the exterior wall cladding 8, thereby achieving the purpose of drainage. The second flange 131 and the drip plate 132 can keep the water further away from the exterior wall cladding 8 and prevent water from entering the gap between the main structure 11 and the exterior wall cladding 8.

[0048] Furthermore, the top surface of the drainage unit 10 is inclined from the window frame 3 toward the outside, and the slope is greater than or equal to 5% to ensure that the water flow is quickly guided away along the slope and to avoid water accumulation.

[0049] Example 5:

[0050] like Figure 1 and 3 As shown, its structure is basically the same as that of embodiments 1-4, except that sealant 14 is filled between the bottom end of the drainage unit 10 and the top end of the exterior wall finish 8.

[0051] The sealant 14, filled between the bottom of the drainage unit 10 and the top of the exterior wall finish 8, securely connects the bottom of the drainage unit 10 to the exterior wall finish 8, thereby improving the installation stability of the drainage unit 10. It also serves a waterproofing function, preventing water from entering between the bottom of the drainage unit 10 and the top of the exterior wall finish 8, thus enhancing the waterproofing capability of the structure. Furthermore, the drainage unit 10 blocks sunlight and ultraviolet rays from the sealant 14, preventing aging and brittleness caused by prolonged direct exposure to ultraviolet light, thereby extending the lifespan of the sealant 14. The sealant 14 is preferably a silane-modified polyether sealant.

[0052] Example 5:

[0053] Drainage unit 10 is made of steel.

[0054] The preferred material for the drainage unit 10 is SPCC cold-rolled steel plate to ensure the overall rigidity of the drainage unit 10.

[0055] like Figure 4-5 As shown, the surface of the drainage unit 10 is provided with an anti-corrosion layer 15, and its top surface is provided with a hydrophobic layer 16.

[0056] The preferred anti-corrosion layer 15 is an AZ150 aluminum-zinc alloy anti-corrosion layer (composition ratio: Al: 55%, Zn: 43.5%, Si: 1.5%), which improves the corrosion resistance of the substrate and delays metal corrosion through the sacrificial anode protection effect; the hydrophobic layer 16 covers the anti-corrosion layer 15 at the top of the drainage unit 10, and the preferred hydrophobic layer is PVDF, in order to improve the drainage capacity of its surface.

[0057] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high weather-resistant window sill drainage board structure, comprising a main wall (1), a window sash (2), a window frame (3), and a window pad (4), wherein the window pad (4) is disposed at the top of the main wall (1), and an energy-saving subframe (5) is disposed at the top of the window pad (4), the window frame (3) is disposed at the top of the energy-saving subframe (5), the window sash (2) is movably disposed within the window frame (3), an insulation layer (6) is disposed on the outer surface of the main wall (1) on the outdoor side, and an inner wall (7) is disposed on the outer surface of the main wall (1) on the indoor side, and an exterior wall finish (8) is disposed on the outer surface of the insulation layer (6), characterized in that, It also includes a drainage unit (10). The window frame (3) is provided with an inwardly recessed drainage groove (9) on the outdoor side. The drainage groove (9) is located below the water hole (17) of the window frame (3), and an L-shaped buckle (18) is provided on its inner top wall. One end of the drainage unit (10) is engaged with the drainage groove (9) through the L-shaped buckle (18), and the other end extends to the outside of the exterior wall finish (8). Its bottom end is set along the top surface of the exterior wall finish (8) to achieve the purpose of drainage.

2. The high weather-resistant window sill drainage board structure according to claim 1, characterized in that, The drainage unit (10) includes a main structure (11), a snap-fit ​​component (12), and a drip component (13). The snap-fit ​​component (12) and the drip component (13) are respectively located at one end of the main structure (11) near the window frame (3) and the other end away from the window frame (3). The snap-fit ​​component (12) is adapted to the drainage groove (9) and snaps into the drainage groove (9). The drip component (13) extends to the outside of the exterior wall finish (8). The bottom of the main structure (11) contacts the top of the exterior wall finish (8), and its side contacts the side wall of the window frame (3) on the outdoor side.

3. The high weather-resistant window sill drainage board structure according to claim 2, characterized in that, The main structure (11) is a component with a hollow triangular vertical cross section. Its shortest side contacts the side wall of the window frame (3) on the outdoor side. The length of its second short side is adapted to the top width of the exterior wall finish (8) and contacts the top of the exterior wall finish (8). Its longest side is located at the top and is used to contact water for drainage.

4. The high weather-resistant window sill drainage board structure according to claim 3, characterized in that, The snap-fit ​​component (12) includes a first flange (121), which is located at the top of the main structure (11) near the window frame (3), and its end has an upwardly bent U-shaped snap-fit ​​wing (122). The top of the snap-fit ​​wing (122) has a trapezoidal snap-fit ​​(123) that is adapted to the L-shaped snap-fit ​​(18) to achieve a tight snap-fit ​​with the drainage groove (9).

5. The high weather-resistant window sill drainage board structure according to claim 3, characterized in that, The drip edge (13) includes a second flange (131), which is located at the top of the main structure (11) away from the window frame (3) and extends downward at an angle, and has a downwardly positioned drip plate (132) at its end.

6. A high weather-resistant window sill drainage board structure according to any one of claims 1-5, characterized in that, The top surface of the drainage unit (10) is inclined from the window frame (3) toward the outside, and the slope of the inclination is greater than or equal to 5%.

7. A high weather-resistant window sill drainage board structure according to claim 6, characterized in that, The bottom of the drainage unit (10) and the top of the exterior wall finish (8) are filled with sealant (14).

8. A high weather-resistant window sill drainage board structure according to claim 6, characterized in that, The drainage unit (10) is made of steel.

9. A high weather-resistant window sill drainage board structure according to claim 6, characterized in that, The surface of the drainage unit (10) is provided with an anti-corrosion layer (15), and its top surface is provided with a hydrophobic layer (16).

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