Aluminum-plastic combined section for thermal insulation doors and windows

Abstract

The utility model relates to door and window section bar technical field provides an aluminium -plastic combined section bar for heat -preserving door and window can avoid glass subsidence. The section bar base part (heat insulation strip of broken bridge aluminium or plastic part of aluminium -plastic coextrusion) of existing broken bridge aluminium section bar and aluminium -plastic coextrusion section bar that bears glass cushion block is the non -metallic material of poor anti -creep ability, and it is easy to produce plastic deformation under the long -term static load of glass. The utility model sets up the support spare in the lower part of heat insulation strip, and the load that glass and cushion block deliver bypasses the non -metallic part (heat insulation strip) of easy creep, directly and effectively delivers to the installation plane of door and window, thereby thoroughly eliminates the glass subsidence problem caused by the creep of non -metallic material, and guarantees the long -term use performance and safety of door and window.

Description

Technical Field

[0001] This utility model relates to the field of door and window profile technology, specifically to an aluminum-plastic composite profile for insulated doors and windows. Background Technology

[0002] Thermally broken aluminum windows and doors, also known as insulated aluminum alloy windows and doors, are high-performance window and door systems widely used in modern buildings. Their core feature lies in the "thermal break" structure, which uses a high-strength, low-thermal-conductivity non-metallic material, typically polyamide 66 with glass fiber (PA66 GF25), to effectively separate the indoor and outdoor aluminum alloy profiles. This structure significantly reduces the heat transfer coefficient of the profiles, effectively preventing direct heat conduction between the aluminum profiles, thereby greatly improving the thermal insulation performance of the windows and doors.

[0003] In addition, to pursue superior thermal insulation and surface texture, "aluminum-plastic co-extruded profiles" also exist on the market. This type of profile has a layer of micro-foamed polyvinyl chloride (PVC) coated onto the exterior of an aluminum alloy inner lining, which serves as the main structural component, through a co-extrusion process, forming a composite material. Its excellent thermal insulation performance mainly relies on the continuous external PVC coating layer.

[0004] In the assembly and installation of thermally broken aluminum windows and doors, as well as aluminum-plastic co-extruded windows and doors, the load-bearing capacity and positioning of the glass are crucial aspects. To ensure the reasonable distribution of glass weight, avoid rigid contact with the profiles, and guarantee the long-term stability of the window and door sashes, the industry standard practice is to place glass spacers between the bottom edge of the glass and the groove of the window / door frame / sash profile during installation. According to specifications, these spacers must be spaced out.

[0005] However, existing common installation practices have a potential technical flaw: For thermally broken aluminum profiles: the bottom of the groove where the glass spacer is placed is often the area through which the thermal break strip passes. This inevitably causes the middle or one end of the glass spacer to partially or completely press on the thermal break strip. These thermal break strips in the profile usually present a simply supported beam state of "fixed at both ends and suspended in the middle," and under long-term concentrated loads, they are prone to slow plastic deformation or creep. For aluminum-plastic co-extruded profiles, the part supporting the thermal break strip is made of plastic, and the hardness and creep resistance of its micro-foamed PVC layer are usually more limited, thus the risk of glass settlement is particularly prominent.

[0006] Although the thermal break material (PA66 GF25) in thermally broken aluminum profiles and the PVC cladding layer in aluminum-plastic co-extruded profiles possess certain mechanical properties, they are essentially still high-molecular polymers, and their long-term creep resistance is significantly lower than that of metals. Window glass is extremely heavy, especially in large windows, where its static load continuously acts on the support blocks and indirectly transfers to the non-metallic supporting components below (from the thermal break material in the thermally broken aluminum profile to the PVC layer in the aluminum-plastic co-extruded profile). These thermal break materials typically exist as simply supported beams within the profile, "fixed at both ends and suspended in the middle," and are highly susceptible to slow plastic deformation or creep under long-term concentrated loads.

[0007] This minute deformation accumulates over time, eventually leading to a serious consequence: the support system fails, and the entire glass panel sinks downwards. Glass sinking triggers a series of chain reactions: First, it causes uneven stress on the sealing strips around the glass, reducing their sealing performance and affecting the airtightness, watertightness, and sound insulation of doors and windows; second, sinking may cause unexpected contact or stress between the glass and the window sash or frame, posing a risk of spontaneous glass breakage; third, sinking also affects the smoothness of opening and closing doors and windows, and detracts from their overall aesthetics. Utility Model Content

[0008] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an aluminum-plastic composite profile for insulated doors and windows that can prevent glass settling.

[0009] Based on the background technical analysis, the fundamental reason for the glass settlement risk faced by existing thermally broken aluminum profiles and aluminum-plastic co-extruded profiles is that the base part of the profile supporting the glass pad (the thermal insulation strip of thermally broken aluminum or the plastic part of aluminum-plastic co-extruded profile) is a non-metallic material with poor creep resistance, which is prone to plastic deformation under long-term static load of glass.

[0010] Therefore, the technical problem to be solved by this utility model is: how to design a brand-new support structure for door and window profiles (including but not limited to thermally broken aluminum profiles and aluminum-plastic co-extruded profiles) that rely on non-metallic materials for structural thermal insulation, so as to directly and effectively transfer the load from the glass and the pads to the installation plane of the door and window, bypassing the easily creeping non-metallic components, thereby completely eliminating the problem of glass settlement caused by the creep of non-metallic materials and ensuring the long-term performance and safety of the door and window.

[0011] To achieve the above objectives, the present invention provides the following technical solution.

[0012] An aluminum-plastic composite profile for insulated doors and windows includes an interior profile, an exterior profile, and a thermal insulation component connecting the interior and exterior profiles, characterized in that the thermal insulation component includes: Thermal insulation strips, which connect the indoor and outdoor profiles, are used to block heat conduction; The support members are configured in multiple ways, each of which is fixed at intervals to the back side of the thermal insulation strip located at the top, and the lower end of the support member is flush with the bottom of the interior profile.

[0013] Furthermore, the support includes a horizontal support plate and a vertical support plate. The horizontal support plate is fixed to the back side of the top thermal insulation strip, and the vertical support plate is fixed to the bottom of the horizontal support plate, with the lower end face of the vertical support plate flush with the bottom of the interior profile.

[0014] Furthermore, there are two heat insulation strips, which are arranged vertically at intervals.

[0015] Furthermore, the gap between the two insulation strips is filled with an insulation board.

[0016] Furthermore, slots are provided on the opposite surfaces of the indoor and outdoor profiles, and protrusions that cooperate with the slots are provided at both ends of the thermal insulation strip.

[0017] Furthermore, it also includes multiple glass pads for supporting the glass, the glass pads being arranged across the interior profile, thermal break strip and exterior profile, and being supported by the interior profile, thermal break strip and exterior profile together; The support member is provided in a one-to-one correspondence with the glass pad, and each support member is installed at the heat insulation strip at the position corresponding to the glass pad.

[0018] Furthermore, the heat insulation strip includes two heat insulation portions with opposite openings, a protrusion connected to the common end of the two heat insulation portions, and a support strip portion connected between the two heat insulation portions.

[0019] Furthermore, multiple slots are provided on the corresponding surfaces of the two heat insulation strips, and the slots on the two heat insulation strips are provided one-to-one.

[0020] Furthermore, the interior profile is an aluminum-plastic co-extruded profile, which includes an aluminum liner and a plastic layer covering the outer periphery of the aluminum liner.

[0021] Compared with existing technologies, the aluminum-plastic composite profile for insulated doors and windows provided by this utility model effectively solves the long-standing problem of glass settling in the industry, and has the following beneficial effects: This invention features an independent support component on the back of the thermal break strip, with its lower end flush with the bottom of the interior profile. This allows the load transmitted from the glass and the spacer to be directly and effectively transferred to the installation surface of the door or window (such as the windowsill), bypassing the thermal break strip and plastic parts which are prone to creep. This eliminates the problem of glass settlement caused by the creep of non-metallic materials, ensuring the long-term stability and safety of the doors and windows.

[0022] By setting up multiple spaced-out support components, each corresponding to a glass pad, effective dispersion and precise support of concentrated loads are achieved. This avoids excessive stress concentration in localized areas of the thermal insulation strip, protecting the strip and enhancing the structural rigidity and load-bearing capacity of the entire profile system.

[0023] The structure employs vertically spaced double thermal insulation strips, filled with insulation panels, forming a highly efficient multi-chamber thermal insulation barrier. This structure slows down the transfer of heat between the interior and exterior through the profiles, significantly reducing the heat transfer coefficient of the profiles, thereby achieving superior thermal insulation performance and meeting higher standards of building energy conservation requirements.

[0024] The glass spacer spans the interior profile, thermal break strip, and exterior profile, and is supported by all three, forming a stable multi-point support system. Combined with the rigid backup support provided by the support components, it ensures the accurate initial position of the glass installation and its long-term reliability, effectively avoiding a series of derivative problems caused by settlement, such as sealing failure and difficulty in opening and closing, and extending the overall service life of the doors and windows. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure for installing the glass in this utility model; Figure 2 for Figure 1 The diagram shows the structure with the heat insulation board installed.

[0026] Explanation of reference numerals in the attached figures: Interior profile 1, aluminum liner 11, plastic layer 12, exterior profile 2, thermal insulation component 3, thermal insulation strip 31, thermal insulation part 311, support strip part 312, support member 32, horizontal support plate 321, vertical support plate 322, protruding strip 33, bayonet 34, thermal insulation board 4, slot 5, glass pad 6, tempered glass 7, glass pressure strip 8. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0028] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0029] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element 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 on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0030] It should be noted that the scope of the methods and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions in a substantially simultaneous manner or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0031] As an embodiment of this utility model, an aluminum-plastic composite profile for insulated doors and windows is disclosed, which has an indoor profile 1, an outdoor profile 2, and a thermal insulation component 3 connecting the two. The thermal insulation component 3 has a thermal insulation strip 31 connecting the indoor and outdoor profiles and a support member 32 supporting the topmost thermal insulation strip 31. Preferably, there are multiple support members 32, each corresponding to a glass pad 6, to support the weight of the vacuum glass 7 transmitted downward by the glass pad 6.

[0032] Dovetail-shaped slots 5 are provided on the opposite sides of the indoor profile 1 and the outdoor profile 2 respectively. Protrusions 33 that cooperate with the slots 5 are provided at both ends of the thermal insulation strip 31. During installation, the protrusions 33 are slid into the slots 5 from the ends to form a snap-fit. The dovetail structure prevents lateral movement between the profile and the thermal insulation strip 31.

[0033] Preferably, there are two thermal break strips 31, vertically spaced apart. These two strips form two independent connection points between the indoor and outdoor profiles. This double-connection structure enhances the overall bending and deformation resistance of the profile, improves its structural stability and rigidity, and helps ensure the shape retention and overall strength of the doors and windows during long-term use. Multiple latches 34 are provided on corresponding surfaces of the two thermal break strips 31, with each latch 34 corresponding to the previous one. These latches 34 can be used for expansion; when needed, a support plate or a heat insulation plate can be inserted between the corresponding openings 34, enhancing the profile's expandability and application range. More preferably, the gap between the two thermal break strips 31 is filled with a heat insulation plate 4. Filling the gap with the heat insulation plate 4 effectively eliminates air convection heat transfer within the cavity between the two thermal break strips 31. The porous structure of the insulation board 4 itself can greatly hinder heat conduction, and together with the original insulation strip 31 and the static air layer, it forms a "composite insulation body", which significantly reduces the overall thermal conductivity of the profile center, thereby improving the thermal insulation performance of doors and windows to a higher level.

[0034] The support member 32 includes a horizontal support plate 321 and a vertical support plate 322. The horizontal support plate 321 is fixed to the back side of the top thermal insulation strip 31, and the vertical support plate 322 is fixed to the bottom of the horizontal support plate 321, with the lower end face of the vertical support plate 322 flush with the bottom of the interior profile 1. When there are two thermal insulation strips 31, the horizontal support plate 321 is fixed to the back side of the top thermal insulation strip 31, and a through hole matching the vertical support plate 322 is opened on the thermal insulation strip below the top. The vertical support plate 322 extends downward through the through hole to a position flush with the bottom of the interior profile 1. The horizontal support plate 321 and the vertical support plate 322 together form a rigid T-shaped structure. This structure receives the glass load acting above the thermal insulation strip 31 through the horizontal support plate 321 and transmits it vertically downward through the vertical support plate 322 directly to the installation plane of the door and window (such as the windowsill). This fundamentally avoids the creep risk caused by long-term load application to the thermal insulation strip 31. When the profile adopts a multi-layer thermal insulation strip 31 design, through holes matching the vertical support plate 322 are opened on the lower thermal insulation strip 31, allowing the vertical support plate 322 to pass through the lower thermal insulation barrier without damage and reach the bottom. This ensures the continuity and integrity of the force transmission path, preventing interruption or weakening due to the presence of multiple thermal insulation strips, while minimizing the weakening of the structural strength of the lower thermal insulation strip.

[0035] Preferably, the thermal insulation strip 31 includes two opposing thermal insulation portions 311, protrusions 33 connected to the common ends of the two thermal insulation portions 311, and a support strip 312 connected between the two thermal insulation portions 311. The support strip 312 is directly connected between the two thermal insulation portions 311, forming a stable truss or I-beam structure inside the thermal insulation strip 31. This enhances the bending stiffness and shear deformation resistance of the thermal insulation strip 31 in the vertical direction, enabling it to better withstand the vertical pressure from the glass pad 6 and the internal stress generated during profile assembly, effectively preventing the thermal insulation strip 31 from bending, deforming, or breaking during long-term use. The two vertically joined thermal insulation portions are fused together at their ends, and the fused ends are respectively connected to the protrusions 33, forming a reliable interference fit or precise snap-fit ​​with the slots 5 on the indoor and outdoor profiles. This connection method provides strong mechanical connection force, ensuring the overall structural strength of the profile. As an embodiment of this utility model, it also includes a plurality of glass pads 6 for supporting tempered glass 7. The glass pads 6 are arranged across the indoor profile 1, the thermal insulation strip 31 and the outdoor profile 2, and are supported by the indoor profile 1, the thermal insulation strip 31 and the outdoor profile 2. The support members 32 are arranged one-to-one with the glass pads 6, and each support member 32 is installed at the thermal insulation strip 31 at the position corresponding to the glass pad 6.

[0036] The glass spacer is positioned across the interior profile 1, the thermal break strip 31, and the exterior profile 2, distributing the weight of the glass evenly across these three main parts of the profile. This design fully utilizes the high strength of the interior and exterior aluminum profiles to bear most of the load, avoiding stress concentration only on non-metallic components such as the thermal break strip 31, thus forming an optimized and synergistic load-bearing system.

[0037] The support member 32 and the glass pad 6 are set in a one-to-one correspondence. The load from the glass pad 6 is "relayed" through the support member 32 directly below it and directly transferred to the installation plane, realizing precise reinforcement of the key weak area (thermal insulation strip) and eliminating creep settlement at this point from the root.

[0038] In one embodiment of this utility model, the interior profile 1 is an aluminum-plastic co-extruded profile, comprising an aluminum inner liner 11 and a plastic layer 12 covering the outer periphery of the aluminum inner liner 11. This structure fully utilizes the core advantages of both materials. The inner aluminum liner 11 forms the "skeleton" of the profile, providing the high strength, high rigidity, and excellent wind pressure resistance necessary for doors and windows, ensuring the structural safety and durability of the entire system; while the outer plastic layer 12 forms a continuous "thermal insulation shell," fundamentally cutting off the metal thermal bridge between the interior aluminum profile and the external environment (or window frame), achieving a thermal insulation effect that surpasses traditional thermally broken aluminum profiles. In this specific embodiment, the slot 5 provided on the outer surface of the interior profile 1 is a structure integrally formed by co-extrusion with the plastic layer 12 of the aluminum-plastic co-extruded profile; correspondingly, the slot 5 on the inner surface of the exterior profile 2 is integrally formed from aluminum alloy. In this configuration, the protrusions 33 at both ends of the thermal insulation strip 31 are supported and fixed by slots made of plastic and aluminum alloy, respectively. It is particularly important to note that for aluminum-plastic co-extruded profiles, the plastic layer 12 is the part that supports the thermal insulation strip 31. Due to the inherent material characteristics of this micro-foamed PVC layer, its hardness and long-term creep resistance are generally limited, making the risk of glass settlement particularly significant when this structure bears long-term glass loads. Therefore, the support member 32 used in this embodiment plays a crucial role. This support member 32 constructs an independent rigid force transmission path, effectively bearing the glass load that was originally mainly acting on the plastic slot, significantly reducing the long-term static load borne by the plastic layer, thereby fundamentally preventing glass settlement caused by plastic material creep.

Claims

1. An aluminum-plastic composite profile for insulated doors and windows, comprising an interior profile (1), an exterior profile (2), and a thermal insulation component (3) connecting the interior profile (1) and the exterior profile (2), characterized in that, The thermal insulation component (3) includes: Thermal insulation strip (31), which is connected between the indoor profile (1) and the outdoor profile (2), is used to block heat conduction; Support members (32) are provided in multiples, each of the support members (32) being fixed at intervals to the back side of the thermal insulation strip (31) located at the top, and the lower end of the support member (32) being flush with the bottom of the interior profile (1).

2. The aluminum-plastic composite profile for insulated doors and windows according to claim 1, characterized in that, The support member (32) includes a horizontal support plate (321) and a vertical support plate (322). The horizontal support plate (321) is fixed to the back side of the top thermal insulation strip (31), and the vertical support plate (322) is fixed to the bottom of the horizontal support plate (321). The lower end face of the vertical support plate (322) is flush with the bottom of the interior profile (1).

3. The aluminum-plastic composite profile for insulated doors and windows according to claim 1, characterized in that, The number of the heat insulation strips (31) is two, and the two heat insulation strips (31) are arranged vertically at intervals.

4. The aluminum-plastic composite profile for insulated doors and windows according to claim 3, characterized in that, The gap between the two insulation strips (31) is filled with an insulation board (4).

5. The aluminum-plastic composite profile for insulated doors and windows according to claim 1, characterized in that, The interior profile (1) and the exterior profile (2) are respectively provided with slots (5), and the two ends of the heat insulation strip (31) are respectively provided with protrusions (33) that cooperate with the slots (5).

6. The aluminum-plastic composite profile for insulated doors and windows according to claim 1, characterized in that, It also includes a plurality of glass pads (6) for supporting the glass, the glass pads (6) being arranged across the interior profile (1), the thermal insulation strip (31) and the exterior profile (2), and being supported by the interior profile (1), the thermal insulation strip (31) and the exterior profile (2); The support member (32) is provided in a one-to-one correspondence with the glass pad (6), and each support member (32) is installed at the heat insulation strip (31) at the position corresponding to the glass pad (6).

7. The aluminum-plastic composite profile for insulated doors and windows according to any one of claims 1 to 6, characterized in that, The heat insulation strip (31) includes two heat insulation parts (311) with opposite openings, a protrusion (33) connected to the common end of the two heat insulation parts (311) respectively, and a support strip (312) connected between the two heat insulation parts (311).

8. The aluminum-plastic composite profile for insulated doors and windows according to claim 3, characterized in that, Multiple slots (34) are provided on the corresponding surfaces of the two heat insulation strips (31), and the slots (34) on the two heat insulation strips (31) are provided one-to-one.

9. The aluminum-plastic composite profile for insulated doors and windows according to claim 3, characterized in that, The interior profile (1) is an aluminum-plastic co-extruded profile, which includes an aluminum liner (11) and a plastic layer (12) covering the outer periphery of the aluminum liner (11).

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