Decorative cover plate corner code connecting structure and aluminum alloy door and window

Abstract

The utility model discloses a decorative cover plate corner code connecting structure and aluminium alloy door and window belongs to door and window technical field. Cover plate horizontal material is equipped with first clamping groove, first cavity and first through -hole, and first through -hole is equipped with first cavity one side to glass pressure line's direction, cover plate vertical material is equipped with second clamping groove, second cavity and second through -hole, and second through -hole is equipped with second cavity one side to glass pressure line's direction, first plug -in board and second plug -in board integrative forming setting, be equipped with first connecting hole on first plug -in board, be equipped with second connecting hole on second plug -in board, and first plug -in board and second plug -in board can respectively insert first cavity, second cavity, to make first connecting piece can pass through first through -hole and enter first connecting hole, and second connecting piece can pass through second through -hole and enter second connecting hole. The utility model aims at solving the problem of insufficient strength of decorative cover plate group angle, easy to open seam etc. in prior art, thereby improving the overall performance and user experience of aluminium alloy door and window.

Description

Technical Field

[0001] This utility model relates to the field of door and window technology, and in particular to a decorative cover plate corner bracket connection structure and aluminum alloy doors and windows. Background Technology

[0002] With the rapid development of the construction industry, aluminum alloy doors and windows have been widely used in modern buildings due to their advantages such as lightweight, high strength, corrosion resistance, and aesthetics. Aluminum alloy doors and windows are typically composed of components such as window frames, glass, and glazing beading. Among these, the glazing beading, as a crucial component for fixing the glass, directly affects the overall strength, sealing performance, and aesthetics of the doors and windows.

[0003] Reference Appendix Figure 1 Appendix Figure 2 The common installation method for aluminum alloy door and window glass trim lines on the market usually involves splicing the trim lines at 90°, followed by a decorative cover plate at 45° for decoration. While the decorative cover plate conceals the obvious horizontal and vertical seams at the trim line joints, this 45° splicing method, although aesthetically pleasing and with no visible seams, suffers from insufficient corner strength. Over time, this can lead to structural loosening and gaps, affecting the overall performance of the doors and windows and the user experience. Utility Model Content

[0004] The purpose of this utility model is to provide a decorative cover plate corner bracket connection structure and aluminum alloy doors and windows, aiming to solve the problems of insufficient corner strength and easy cracking of decorative cover plate assemblies in the prior art, thereby improving the overall performance and user experience of aluminum alloy doors and windows.

[0005] In a first aspect, this utility model provides a decorative cover plate corner bracket connection structure, comprising:

[0006] The cover plate cross section is provided with a first slot, a first cavity and a first through hole. The first slot is provided on the side of the cover plate cross section facing the glass pressure line, and the first through hole is provided on the side of the first cavity facing the glass pressure line.

[0007] The cover plate vertical piece is provided with a second slot, a second cavity and a second through hole. The second slot is provided on the side of the cover plate vertical piece facing the glass pressure line and the second through hole is provided on the side of the second cavity facing the glass pressure line.

[0008] The first insert plate and the second insert plate are integrally formed. The first insert plate is provided with a first connecting hole, and the second insert plate is provided with a second connecting hole. The first insert plate and the second insert plate can be inserted into the first cavity and the second cavity respectively, so that the first connector can enter the first connecting hole through the first through hole, and the second connector can enter the second connecting hole through the second through hole.

[0009] The decorative cover plate corner bracket connection structure provided by this utility model uses an integrally formed first and second insert plate, which are respectively inserted into the cavities of the cover plate horizontal and vertical members, and fixed by connectors to form a stable connection structure. This structure effectively improves the corner strength of the decorative cover plate, avoids the problems of structural loosening and gap opening that easily occur after long-term use of 45° spliced ​​decorative cover plates in the prior art, and significantly improves the overall structural stability and service life of doors and windows.

[0010] Furthermore, the first insert plate is also provided with a first insert plate top screw hole, and the cover plate horizontal material is also provided with a first cover plate top screw hole, and the first top screw can enter the first insert plate top screw hole through the first cover plate top screw hole; the second insert plate is also provided with a second insert plate top screw hole, and the cover plate vertical material is also provided with a second cover plate top screw hole, and the second top screw can enter the second insert plate top screw hole through the second cover plate top screw hole.

[0011] By adopting the above technical solution, the relative position between the cover plate horizontal material and the cover plate vertical material can be finely adjusted by adjusting the screwing depth of the first and second set screws. This effectively eliminates the step difference at the splicing corner, ensures that the splicing surface is flat and beautiful, and improves the appearance quality and sealing performance of the overall structure.

[0012] Furthermore, the first insert plate set screw hole is located on the side of the first connecting hole facing the second insert plate, and the second insert plate set screw hole is located on the side of the second connecting hole facing the first insert plate.

[0013] By adopting the above technical solution, the top screw hole of the first insert plate is located on the side where the first connecting hole faces the second insert plate, and the top screw hole of the second insert plate is located on the side where the second connecting hole faces the first insert plate, making the position of the top screw closer to the splicing corner. This layout can more effectively adjust the flatness at the splicing corner, improve the leveling effect, and ensure that the splicing surface is flatter and more aesthetically pleasing.

[0014] Furthermore, the first insert plate is also provided with a first set screw boss, and the second insert plate is also provided with a second set screw boss. The first set screw can be expanded by pressing the first set screw boss through the set screw hole of the first insert plate, and the second set screw can be expanded by pressing the second set screw boss through the set screw hole of the second insert plate.

[0015] Using the above technical solution, the expansion and deformation of the top screw boss can effectively fill the tiny gap between the insert plate and the inner cavity of the profile. By adjusting the screw insertion depth, the expansion degree of the insert plate can be precisely controlled, thereby achieving precise leveling of the splicing corner, ensuring that the splicing surface is flat and beautiful, and eliminating step differences and gaps.

[0016] Furthermore, at least one of the first insert plate and the second insert plate is provided with an insert plate glue injection hole, and at least one of the cover plate horizontal material and the cover plate vertical material is provided with a cover plate glue injection hole, and the cover plate glue injection hole can be aligned with the insert plate glue injection hole.

[0017] By employing the above technical solution, injection holes are provided on the insert and cover plate profiles, and structural adhesive is injected after assembly. This structural adhesive fills the gap between the insert plate and the inner cavity of the profile, forming a strong bond. This injection bonding method significantly improves the connection strength and overall structural stability between the insert and cover plate profiles, avoiding problems such as loosening and deformation after long-term use. Furthermore, the injection structure effectively fills the tiny gaps between the insert plate and the inner cavity of the profile, forming a continuous sealing layer that prevents dust and moisture from entering the profile, avoiding internal corrosion or damage, extending the service life of doors and windows, and improving overall sealing performance.

[0018] Furthermore, the first insert plate is provided with a first adhesive guide groove, and the second insert plate is provided with a second adhesive guide groove. The first adhesive guide groove and the second adhesive guide groove are connected, and at least one of the first adhesive guide groove and the second adhesive guide groove is connected to the adhesive injection hole of the insert plate.

[0019] By employing the above technical solution, a clear and smooth adhesive injection channel is formed by respectively setting a first adhesive guide groove and a second adhesive guide groove on the first insert plate and the second insert plate, and ensuring that the two are interconnected, while ensuring that at least one adhesive guide groove is connected to the adhesive injection hole. This structure optimizes the flow path of the structural adhesive, enabling the adhesive to quickly and evenly fill the gap between the insert plate and the inner cavity of the profile, significantly improving the adhesive injection efficiency and reducing the adhesive injection time.

[0020] Furthermore, the first connector is inserted into the first adhesive guide groove after passing through the first through hole and the first connecting hole in sequence, and the second connector is inserted into the second adhesive guide groove after passing through the second through hole and the second connecting hole in sequence.

[0021] By employing the above technical solution, inserting the first connector and the second connector into the first adhesive guide groove and the second adhesive guide groove respectively, the connectors not only provide mechanical fixation but also synergize with the structural adhesive. The connectors provide initial mechanical connection strength, while the structural adhesive further fills the tiny gaps between the connectors and the insert plate, forming a robust adhesive structure. This synergistic effect significantly improves the stability and reliability of the connection, avoiding problems caused by loose mechanical connections or uneven distribution of structural adhesive.

[0022] Furthermore, both the first insert plate and the second insert plate include a stainless steel layer and a nylon layer, with the nylon layer disposed on the side of the stainless steel layer away from the glass pressure line.

[0023] By adopting the above technical solution, through the composite structure of stainless steel layer and nylon layer, the stainless steel layer provides high-strength support, while the nylon layer endows the corner bracket with excellent toughness, impact resistance and anti-aging properties, effectively improving its durability and environmental adaptability.

[0024] Furthermore, both the first connecting hole and the second connecting hole are threaded holes, and both the first connector and the second connector are countersunk screws.

[0025] By adopting the above technical solution, by setting the first connecting hole and the second connecting hole as threaded holes and using countersunk screws as connectors, threaded connections between the insert plate and the horizontal and vertical parts of the cover plate can be achieved.

[0026] Secondly, this utility model provides an aluminum alloy door and window, comprising:

[0027] Any of the above decorative cover plate corner bracket connection structures;

[0028] The horizontal pressure line is equipped with a first locking block, which can be inserted into the first slot.

[0029] The vertical pressure line is equipped with a second locking block, which can be inserted into the second locking slot.

[0030] As can be seen from the above, the decorative cover plate corner bracket connection structure provided by this utility model uses an integrally formed first insert plate and a second insert plate, which are respectively inserted into the cavities of the cover plate horizontal and vertical members, and fixed by connectors to form a stable connection structure. This structure effectively improves the corner strength of the decorative cover plate, avoids the problems of structural loosening and gaps that easily occur after long-term use of 45° spliced ​​decorative cover plates in the prior art, and significantly improves the overall structural stability and service life of doors and windows.

[0031] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description or may be learned by practicing embodiments of this application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0032] Figure 1 A schematic diagram of the glass pressure line installation structure for existing aluminum alloy doors and windows.

[0033] Figure 2 A schematic diagram of the installation structure for decorative cover plates on existing aluminum alloy doors and windows.

[0034] Figure 3 This is an exploded structural diagram of a decorative cover plate corner bracket connection structure proposed in this utility model.

[0035] Figure 4 for Figure 3 A structural schematic diagram of the first and second insert plates from another perspective.

[0036] Figure 5 This is a cross-sectional structural diagram of a decorative cover plate corner bracket connection structure proposed in this utility model.

[0037] In the attached diagram: 100, cover plate horizontal piece; 110, first slot; 120, first cavity; 130, first through hole; 140, first cover plate top screw hole; 150, cover plate glue injection hole; 200, cover plate vertical piece; 210, second slot; 220, second cavity; 230, second through hole; 240, second cover plate top screw hole; 300, first insert plate; 310, first connecting hole; 320, first insert plate top screw hole; 330, first top screw boss; 340, insert... 350. Glue injection hole; 360. First glue guide groove; 370. Stainless steel layer; 400. Nylon layer; 410. Second insert plate; 420. Second insert plate top screw hole; 430. Second top screw boss; 440. Second glue guide groove; 500. First connector; 600. Second connector; 700. First top screw; 800. Second top screw; 900. Horizontal pressure line; 910. First locking block; 1000. Vertical pressure line; 1010. Second locking block. Detailed Implementation

[0038] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0039] The following disclosure provides many different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0040] The decorative cover plate corner bracket connection structure disclosed in this utility model is mainly used in aluminum alloy doors and windows to achieve decorative concealment of the pressure line. The decorative cover plate corner bracket connection structure aims to solve the problems of insufficient corner strength and easy opening of decorative cover plate groups in the prior art, thereby improving the overall performance and user experience of aluminum alloy doors and windows.

[0041] Reference Appendix Figure 3In one embodiment, the decorative cover plate corner bracket connection structure includes a cover plate horizontal member 100, a cover plate vertical member 200, a first insert plate 300, and a second insert plate 400. The cover plate horizontal member 100 is provided with a first slot 110, a first cavity 120, and a first through hole 130. The first slot 110 is located on the side of the cover plate horizontal member 100 facing the glass pressure line, and the first through hole 130 is located on the side of the first cavity 120 facing the glass pressure line. The cover plate vertical member 200 is provided with a second slot 210, a second cavity 220, and a second through hole 230. The second slot 210 is located on the side of the cover plate vertical member 200 facing the glass pressure line, and the second through hole 230 is located on the side of the second cavity 220 facing the glass pressure line. On one side of the wire pressing; the first insert plate 300 and the second insert plate 400 are integrally formed. The first insert plate 300 is provided with a first connecting hole 310, and the second insert plate 400 is provided with a second connecting hole 410. The first insert plate 300 and the second insert plate 400 can be inserted into the first cavity 120 and the second cavity 220 respectively, so that the first connector 500 can enter the first connecting hole 310 through the first through hole 130, and the second connector 600 can enter the second connecting hole 410 through the second through hole 230.

[0042] As can be seen from the above, the decorative cover plate corner bracket connection structure provided by this utility model, through the integrally formed first insert plate 300 and second insert plate 400, are respectively inserted into the cavities of the cover plate horizontal member 100 and the cover plate vertical member 200, and fixed by connectors to form a stable connection structure. This structure effectively improves the corner strength of the decorative cover plate, avoids the problems of structural loosening and gap opening that easily occur after long-term use of 45° spliced ​​decorative cover plates in the prior art, and significantly improves the overall structural stability and service life of doors and windows.

[0043] In one embodiment, the first insert plate 300 is further provided with a first insert plate top screw hole 320, and the cover plate horizontal material 100 is further provided with a first cover plate top screw hole 140, and the first top screw 700 can enter the first insert plate top screw hole 320 through the first cover plate top screw hole 140; the second insert plate 400 is further provided with a second insert plate top screw hole 420, and the cover plate vertical material 200 is further provided with a second cover plate top screw hole 240, and the second top screw 800 can enter the second insert plate top screw hole 420 through the second cover plate top screw hole 240.

[0044] By adopting the above technical solution, by adjusting the screwing depth of the first set screw 700 and the second set screw 800, the relative position between the cover plate horizontal material 100 and the cover plate vertical material 200 can be finely adjusted, thereby effectively eliminating the step difference at the splicing corner, ensuring that the splicing surface is flat and beautiful, and improving the appearance quality and sealing performance of the overall structure.

[0045] In one embodiment, the first insert plate set screw hole 320 is located on the side of the first connection hole 310 facing the second insert plate 400, and the second insert plate set screw hole 420 is located on the side of the second connection hole 410 facing the first insert plate 300.

[0046] By adopting the above technical solution, the first insert plate set screw hole 320 is located on the side of the first connecting hole 310 facing the second insert plate 400, and the second insert plate set screw hole 420 is located on the side of the second connecting hole 410 facing the first insert plate 300, making the position of the set screw closer to the splicing corner. This layout can more effectively adjust the flatness at the splicing corner, improve the leveling effect, and ensure that the splicing surface is flatter and more aesthetically pleasing.

[0047] Reference Appendix Figure 4 In one embodiment, the first insert plate 300 is further provided with a first set screw boss 330, and the second insert plate 400 is further provided with a second set screw boss 430. The first set screw 700 can expand by pressing the first set screw boss 330 through the first insert plate set screw hole 320, and the second set screw 800 can expand by pressing the second set screw boss 430 through the second insert plate set screw hole 420.

[0048] Using the above technical solution, the expansion and deformation of the top screw boss can effectively fill the tiny gap between the insert plate and the inner cavity of the profile. By adjusting the screw insertion depth, the expansion degree of the insert plate can be precisely controlled, thereby achieving precise leveling of the splicing corner, ensuring that the splicing surface is flat and beautiful, and eliminating step differences and gaps.

[0049] Continue to refer to the appendix Figure 3 In one embodiment, at least one of the first insert plate 300 and the second insert plate 400 is provided with an insert plate glue injection hole 340, and at least one of the cover plate horizontal material 100 and the cover plate vertical material 200 is provided with a cover plate glue injection hole 150, and the cover plate glue injection hole 150 can be aligned with the insert plate glue injection hole 340.

[0050] By employing the above technical solution, injection holes are provided on the insert and cover plate profiles, and structural adhesive is injected after assembly. This structural adhesive fills the gap between the insert plate and the inner cavity of the profile, forming a strong bond. This injection bonding method significantly improves the connection strength and overall structural stability between the insert and cover plate profiles, avoiding problems such as loosening and deformation after long-term use. Furthermore, the injection structure effectively fills the tiny gaps between the insert plate and the inner cavity of the profile, forming a continuous sealing layer that prevents dust and moisture from entering the profile, avoiding internal corrosion or damage, extending the service life of doors and windows, and improving overall sealing performance.

[0051] Reference Appendix Figure 4In one embodiment, the first insert plate 300 is provided with a first adhesive guide groove 350, and the second insert plate 400 is provided with a second adhesive guide groove 440. The first adhesive guide groove 350 and the second adhesive guide groove 440 are connected, and at least one of the first adhesive guide groove 350 and the second adhesive guide groove 440 is connected to the adhesive injection hole 340 of the insert plate.

[0052] By adopting the above technical solution, a first adhesive guide groove 350 and a second adhesive guide groove 440 are respectively provided on the first insert plate 300 and the second insert plate 400, and the two are interconnected. At the same time, it is ensured that at least one adhesive guide groove is connected to the adhesive injection hole, thereby forming a clear and smooth adhesive injection channel. This structure optimizes the flow path of structural adhesive, enabling the adhesive to quickly and evenly fill the gap between the insert plate and the profile cavity, significantly improving the adhesive injection efficiency and reducing the adhesive injection time.

[0053] In one embodiment, the first connector 500 is inserted into the first adhesive guide groove 350 after passing through the first through hole 130 and the first connecting hole 310 in sequence, and the second connector 600 is inserted into the second adhesive guide groove 440 after passing through the second through hole 230 and the second connecting hole 410 in sequence.

[0054] By employing the above technical solution, inserting the first connector 500 and the second connector 600 into the first adhesive guide groove 350 and the second adhesive guide groove 440 respectively, the connectors not only provide mechanical fixation but also synergize with the structural adhesive. The connectors provide initial mechanical connection strength, while the structural adhesive further fills the tiny gaps between the connectors and the insert plate, forming a robust adhesive structure. This synergistic effect significantly improves the stability and reliability of the connection, avoiding problems caused by loose mechanical connections or uneven distribution of structural adhesive.

[0055] In one embodiment, both the first insert plate 300 and the second insert plate 400 include a stainless steel layer 360 and a nylon layer 370, with the nylon layer 370 disposed on the side of the stainless steel layer 360 away from the glass pressure line.

[0056] By adopting the above technical solution, through the composite structure of stainless steel layer 360 and nylon layer 370, stainless steel layer 360 provides high-strength support, while nylon layer 370 endows the corner bracket with excellent toughness, impact resistance and anti-aging properties, effectively improving its durability and environmental adaptability.

[0057] In one embodiment, both the first connecting hole 310 and the second connecting hole 410 are threaded holes, and both the first connector 500 and the second connector 600 are countersunk screws.

[0058] By adopting the above technical solution, by setting the first connecting hole 310 and the second connecting hole 410 as threaded holes and using countersunk screws as connectors, threaded connections between the insert plate and the cover plate horizontal material 100 and the cover plate vertical material 200 can be realized.

[0059] Reference Appendix Figure 1 Appendix Figure 2 Appendix Figure 5 This utility model also provides an aluminum alloy door and window, including any of the above-mentioned decorative cover plate corner bracket connection structures, a horizontal pressure line 900, and a vertical pressure line 1000. The horizontal pressure line 900 is provided with a first locking block 910, which can be inserted into a first locking slot 110; the vertical pressure line 1000 is provided with a second locking block 1010, which can be inserted into a second locking slot 210.

[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0061] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A decorative cover plate corner bracket connection structure, characterized in that, include: The cover plate horizontal piece (100) is provided with a first slot (110), a first cavity (120) and a first through hole (130). The first slot (110) is provided on the side of the cover plate horizontal piece (100) facing the glass pressure line, and the first through hole (130) is provided on the side of the first cavity (120) facing the glass pressure line. The cover plate vertical member (200) is provided with a second slot (210), a second cavity (220) and a second through hole (230). The second slot (210) is provided on the side of the cover plate vertical member (200) facing the glass pressure line, and the second through hole (230) is provided on the side of the second cavity (220) facing the glass pressure line. The first insert plate (300) and the second insert plate (400) are integrally formed. The first insert plate (300) is provided with a first connecting hole (310), and the second insert plate (400) is provided with a second connecting hole (410). The first insert plate (300) and the second insert plate (400) can be inserted into the first cavity (120) and the second cavity (220) respectively, so that the first connector (500) can enter the first connecting hole (310) through the first through hole (130), and the second connector (600) can enter the second connecting hole (410) through the second through hole (230).

2. The decorative cover plate corner bracket connection structure according to claim 1, characterized in that, The first insert plate (300) is also provided with a first insert plate top screw hole (320), and the cover plate horizontal material (100) is also provided with a first cover plate top screw hole (140). The first top screw (700) can enter the first insert plate top screw hole (320) through the first cover plate top screw hole (140); the second insert plate (400) is also provided with a second insert plate top screw hole (420), and the cover plate vertical material (200) is also provided with a second cover plate top screw hole (240). The second top screw (800) can enter the second insert plate top screw hole (420) through the second cover plate top screw hole (240).

3. The decorative cover plate corner bracket connection structure according to claim 2, characterized in that, The first insert plate top screw hole (320) is located on the side of the first connecting hole (310) facing the second insert plate (400), and the second insert plate top screw hole (420) is located on the side of the second connecting hole (410) facing the first insert plate (300).

4. The decorative cover plate corner bracket connection structure according to claim 2, characterized in that, The first insert plate (300) is also provided with a first set screw boss (330), and the second insert plate (400) is also provided with a second set screw boss (430). The first set screw (700) can expand by squeezing the first set screw boss (330) through the set screw hole (320) of the first insert plate, and the second set screw (800) can expand by squeezing the second set screw boss (430) through the set screw hole (420) of the second insert plate.

5. The decorative cover plate corner bracket connection structure according to claim 1, characterized in that, At least one of the first insert plate (300) and the second insert plate (400) is provided with an insert plate glue injection hole (340), and at least one of the cover plate horizontal material (100) and the cover plate vertical material (200) is provided with a cover plate glue injection hole (150), and the cover plate glue injection hole (150) can be aligned with the insert plate glue injection hole (340).

6. The decorative cover plate corner bracket connection structure according to claim 5, characterized in that, The first insert plate (300) is provided with a first adhesive guide groove (350), and the second insert plate (400) is provided with a second adhesive guide groove (440). The first adhesive guide groove (350) and the second adhesive guide groove (440) are connected, and at least one of the first adhesive guide groove (350) and the second adhesive guide groove (440) is connected to the adhesive injection hole (340) of the insert plate.

7. The decorative cover plate corner bracket connection structure according to claim 6, characterized in that, The first connector (500) is inserted into the first adhesive guide groove (350) after passing through the first through hole (130) and the first connecting hole (310) in sequence. The second connector (600) is inserted into the second adhesive guide groove (440) after passing through the second through hole (230) and the second connecting hole (410) in sequence.

8. The decorative cover plate corner bracket connection structure according to claim 1, characterized in that, Both the first insert plate (300) and the second insert plate (400) include a stainless steel layer (360) and a nylon layer (370), wherein the nylon layer (370) is disposed on the side of the stainless steel layer (360) away from the glass pressure line.

9. The decorative cover plate corner bracket connection structure according to claim 1, characterized in that, Both the first connecting hole (310) and the second connecting hole (410) are threaded holes, and both the first connector (500) and the second connector (600) are countersunk screws.

10. An aluminum alloy door and window, characterized in that, include: The decorative cover plate corner bracket connection structure according to any one of claims 1-9; The horizontal pressure line (900) is provided with a first locking block (910), which can be inserted into the first card slot (110); The vertical pressure line (1000) is provided with a second locking block (1010), which can be inserted into the second locking slot (210).

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