A composite profile

Abstract

This utility model relates to the field of profile technology, and more specifically to a composite profile. To optimize cost, strength, and cold air barrier performance, the following solution is adopted: a first substrate and a second substrate, arranged face-to-face, with a gap formed between them. A third substrate is placed at the gap, and the third substrate is connected to the first and second substrates. The first and second substrates, made of metal, ensure the overall structural strength of the profile. The face-to-face arrangement reduces material usage while increasing the metal surface coverage, effectively preventing profile bending and deformation. The third substrate, made of plastic, fills the gap between the two metal substrates, utilizing the low thermal conductivity of plastic to block the direct conduction of low temperature through the metal. Furthermore, the third substrate is firmly bonded to the metal substrate via heat fusion combined with other fixing methods, solving the problem of insufficient connection strength in traditional thermal insulation strips.

Description

Technical Field

[0001] This utility model relates to the field of profile technology, and more specifically to a composite profile. Background Technology

[0002] In construction, furniture, and other fields, profiles are widely used basic components. Among them, thermally broken aluminum profiles are extensively used in door and window manufacturing due to their advantages such as low cost, light weight, and ease of processing and installation. However, traditional thermally broken aluminum profiles have significant shortcomings in thermal insulation when used in cold regions: although the overall airtightness of the doors and windows is good, users can still clearly feel that the temperature of the window frame is low in windless weather, and there is a feeling of draft. The core reason for this problem is that the thermal conductivity of the metal substrate is high. Low external temperatures are easily conducted directly to the interior through the metal profile, leading to increased heat exchange between the indoor and outdoor environments, which affects living comfort and increases heating energy consumption.

[0003] In existing technologies, although heat conduction is blocked by filling the metal profile with foam or installing plastic thermal insulation strips, the monolithic nature of the metal and the relatively short overall insulation path make it difficult to effectively reduce the low-temperature conduction effect. Furthermore, some improved solutions excessively increase the plastic content or profile width to enhance insulation performance, leading to increased costs, reduced overall structural strength, and susceptibility to bending and deformation. Therefore, optimizing cold air blocking performance while ensuring ease of processing, cost control, and profile structural strength has become a critical issue that urgently needs to be addressed in existing profile technologies. Utility Model Content

[0004] This utility model provides a composite profile, the purpose of which is to optimize the relationship between air blocking performance and structural strength.

[0005] The above objectives are achieved through the following technical solutions:

[0006] A composite profile includes a first substrate and a second substrate, which are arranged face to face and spaced apart to form a gap. A third substrate is provided at the gap and is connected to the first substrate and the second substrate.

[0007] The first and second substrates are made of metal, and the third substrate is made of plastic.

[0008] The first substrate and / or the second substrate is one of steel, aluminum alloy and copper alloy.

[0009] The third substrate is one of polyamide (nylon), polyvinyl chloride (PVC), and polybutylene terephthalate.

[0010] The third substrate and the first substrate, as well as the third substrate and the second substrate, are fixedly connected.

[0011] There are thermally fused connections between the third substrate and the first substrate, as well as between the third substrate and the second substrate.

[0012] The first substrate includes a first side support and two first inner supports fixedly connected to the first side support; the second substrate includes a second side support and two second inner supports fixedly connected to the second side support; the two first inner supports of the first substrate and the two second inner supports of the second substrate are arranged face to face, so that two gaps are formed between the two first inner supports and the two second inner supports.

[0013] The third substrate includes a third inner support body. A third inner support body of the third substrate is connected between the two second inner supports body on the left side, and a third inner support body of the second third substrate is connected between the two second inner supports body on the right side. The two third inner supports body are located in the two notches respectively.

[0014] The third substrate also includes a transverse support fixed to the third inner support;

[0015] When the two notches are staggered, the horizontal support is fixed to the inner support of the second side; when the two notches are aligned, the cross sections of the two third substrates have a U-shaped structure.

[0016] A fourth substrate is fixed on one side of the first substrate and the second substrate back to back, and a cavity is formed between the fourth substrate and the first substrate or / and between the fourth substrate and the second substrate.

[0017] It also includes a fifth substrate that covers the first and second substrates, and the fifth substrate is integrally connected to the third substrate.

[0018] The beneficial effects of this utility model are as follows:

[0019] Optimizing the balance between airflow barrier and structural strength: The first and second metal substrates ensure the overall structural strength of the profile. Their forked openings, facing each other, reduce material usage while increasing the metal surface coverage, effectively preventing profile bending and deformation. The third plastic substrate fills the gap between the two metal substrates, utilizing the low thermal conductivity of plastic to block the direct conduction of low temperatures through the metal. Furthermore, the third substrate is firmly bonded to the first and second metal substrates via heat fusion, solving the problem of insufficient connection strength in traditional thermal insulation strips. Alternatively, a further solution could be to encapsulate the first and second substrates with a plastic body, integrating the third, fourth, and fifth substrates. This is achieved by fully melting and encapsulating the first and second substrates before curing. Additional fixing methods can be added as needed, such as adding screws to secure the plastic body to the metal, or creating holes in the metal to allow the molten plastic body to enter and solidify, increasing anchoring points.

[0020] Enhanced thermal insulation: The U-shaped or U-shaped structure formed by the horizontal support and the inner support of the third substrate increases the path length for low-temperature conduction; the fourth substrate fixed to the outside of the first and second substrates forms a cavity, and the fifth substrate completely covers the metal substrate, further utilizing the low thermal conductivity of the air layer to enhance thermal insulation performance. The multiple thermal insulation designs significantly reduce indoor and outdoor heat exchange, improve living comfort and reduce energy consumption.

[0021] Improved processing and installation convenience: The fourth substrate adopts a snap-fit ​​and hot-melt fixing method, which is convenient for assembly and ensures a firm connection; the fifth substrate is integrally formed with the third substrate and can be attached to the metal substrate through a full-cavity melting process, simplifying the production process; at the same time, the slots, rails and other structures on the profile facilitate connection with other components and expand the application scenarios.

[0022] Balancing aesthetics and practicality: The complete coverage of the metal substrate by the fifth substrate, along with the spacing between the outer plastic substrate and the metal substrate, ensures the cleanliness of the profile's appearance while providing operational space for processing techniques such as laser welding. This further enhances the sturdiness of the finished frame without compromising aesthetics. Attached Figure Description

[0023] Figure 1 A schematic diagram of the notch location in the composite profile, as shown in Embodiment 1, is displayed.

[0024] Figure 2 A schematic diagram of the notch location in Embodiment 2 of the composite profile is shown;

[0025] Figure 3 A schematic diagram of the notch location in Embodiment 3 of the composite profile is shown;

[0026] Figure 4 A schematic diagram of an embodiment of a composite profile with a fourth substrate is shown;

[0027] Figures 5 to 7 Three embodiments are shown where the first and second substrates are completely covered by plastic;

[0028] Figure 8 An embodiment showing the integration of the fifth substrate and the third substrate is illustrated.

[0029] In the diagram: 11. First side support; 12. First inner support; 21. Second side support; 22. Second inner support; 31. Third inner support; 32. Horizontal support; 41. First additional plastic body; 42. Slot; 43. Third additional plastic body; 44. Fourth additional plastic body; 51. Second additional plastic body; 52. Rail. Detailed Implementation

[0030] A composite profile includes a first substrate, a second substrate, and a third substrate connected between the first substrate and the second substrate.

[0031] The first substrate includes a first side support 11 and two first inner supports 12 fixedly connected to the first side support 11.

[0032] The second substrate includes a second side support 21 and two second side inner supports 22 fixedly connected to the second side support 21.

[0033] The two first inner supports 12 of the first substrate and the two second side inner supports 22 of the second substrate are arranged face to face, and gaps are formed between the two first inner supports 12 and the two second side inner supports 22. The two gaps provide space for the placement of the two third substrates.

[0034] The third substrate includes a third inner support 31;

[0035] A third inner support body 31 of a third substrate is fixedly connected between the two second inner support bodies 22 on the left side, and a third inner support body 31 of a second third substrate is fixedly connected between the two second inner support bodies 22 on the right side.

[0036] The first and second substrates are metals, preferably steel, aluminum alloys, and copper alloys; the third substrate is plastic, preferably thermoplastic, specifically polyamide (PA), nylon, polyvinyl chloride (PVC), and polybutylene terephthalate (PBT).

[0037] The third inner support 31 is fixedly connected to the second side inner support 22 connected to itself.

[0038] The third substrate also includes a horizontal support 32, which is integrally formed or hot-melt fixedly connected to the third inner support 31. The specific solution needs to be based on the notch location.

[0039] The two gaps are staggered:

[0040] Example 1, reference to the location of the gap Figure 1 Two horizontal support bodies 32 are fixed or integrally formed on the third inner support body 31. The interface between the third inner support body 31 and the two horizontal support bodies 32 is U-shaped. At this time, the two horizontal support bodies 32 are fixed on the second side inner support body 22 opposite to the third inner support body 31. The U-shaped opening also faces the second side inner support body 22 opposite to the third inner support body 31.

[0041] Example 2, regarding the location of the gap. Figure 2Two horizontal support bodies 32 are fixed or integrally formed on the third inner support body 31. One or both of the third inner support bodies 31 have a concave cross-section, and the two horizontal support bodies 32 are fixed in the direction of the second side inner support body 22 opposite to the third inner support body 31. The concave openings are oriented away from the opposite second side inner support body 22.

[0042] Align the two notches:

[0043] Example 3, with reference to the gap location Figure 3 The third substrate is connected between the two second inner support bodies 22 on the left side. At this time, the cross section of the third substrate is U-shaped, with two third inner support bodies 31 on the left and right, and two horizontal support bodies 32 located between the two third inner support bodies 31.

[0044] The first and second substrates mentioned above can be described, but are not limited to, as fork-shaped structures with openings, the openings of the two fork-shaped structures being arranged face to face. The fork-shaped structure increases the metal surface coverage width while reducing material usage, effectively preventing profile bending and deformation, and allowing the plastic substrate to withstand external forces without deformation.

[0045] Based on any one of the three embodiments described above, the following improvements can be made:

[0046] For example Figure 4 Using the diagram as a reference, the area above the first support 11 and below the second support 21 represents the interior of the window, while the opposite represents the exterior, which is a top view during actual construction. The vertical direction in the diagram corresponds to indoor and outdoor during actual construction. A fourth substrate can be connected to the exterior of the first support 11 and / or the second support 21, secured by snap-fit ​​or a combination of snap-fit ​​and heat fusion. The fourth substrate is an additional plastic component. Preferably, a cavity is formed between the fourth substrate and the first support 11 and / or the second support 21 to increase heat insulation and achieve lightweighting and material saving.

[0047] Example of a snap-fit ​​embodiment: For instance, a rib 13 is fixed to the lower end of the first side support 11, and the rib 13 forms an angle with the first side support 11. The purpose is to make the rib 13 inclined so as to hook the first additional plastic body 41 after it has been heat-melted and then fixed. If necessary, a slot 42 can also be provided on the first additional plastic body 41 to connect with other profiles with protrusions that mate with the slot 42.

[0048] Example 2: For instance, a trapezoidal groove is formed at the upper end of the second side support 21, and a trapezoidal locking rail 52 is fixed to the lower end of the second additional plastic body 51. The locking rail 52 is inserted into the trapezoidal groove. The locking rail 52 can also be heated to heat-melt its surface. After cooling and solidifying on the second side support 21, the bond between itself and the second side support 21 is increased. The left and right ends of the second additional plastic body 51 extend downwards to adhere to the second side support 21, forming a cavity. The second additional plastic body 51 can be heat-melted onto the surface of the second side support 21, thereby increasing airtightness and firmness.

[0049] Based on the three embodiments with the notch location, the following improvements can also be made:

[0050] refer to Figures 5 to 7 A fifth substrate 4 can be used to completely encapsulate the first and second substrates. The fifth substrate 4 is made of the same material as the third substrate and is integrally connected to it. In this encapsulated state, the fifth substrate 4 can be molten and attached to the first and second substrates using a molten cavity processing method, and then cooled and shaped. The fifth substrate 4 is an integrated solution for the fourth substrate.

[0051] For partial heat fusion bonding, the surfaces of the third or / and fourth plastic substrates that need to be heat fused can be heated during construction or manufacturing. After the material is molten, it adheres to the structure to be connected. After the material cools and solidifies, it can be fixed to the connected structure.

[0052] refer to Figure 8 The first additional plastic body 41 and the second additional plastic body 51 can also be integrated with the fifth substrate 4. For example, the third additional plastic body 43 is integrally connected to the outside of the fifth substrate 4, and the third additional plastic body 43 is actually the first additional plastic body 41 integrated with the fifth substrate 4; the fourth additional plastic body 44 is integrally connected to the outside of the fifth substrate 4, and the fourth additional plastic body 44 is actually the second additional plastic body 51 integrated with the fifth substrate 4.

[0053] There are cavities between the third additional plastic body 43 and the fifth base material 4, as well as between the fourth additional plastic body 44 and the fifth base material 4. Observing the first side support 11, its outer metal surface and the outermost plastic layer, namely the third additional plastic body 43, are at a certain distance. This allows for laser welding without affecting the aesthetics of the outer side of the profile, but can greatly enhance the sturdiness of the finished frame after the profile is processed.

Claims

1. A composite profile, characterized in that It includes a first substrate and a second substrate, which are arranged face to face and spaced apart to form a gap. A third substrate is provided at the gap and is connected to the first substrate and the second substrate.

2. A composite profile according to claim 1, characterised in that The first and second substrates are made of metal, and the third substrate is made of plastic.

3. A composite profile according to claim 2, characterised in that The first substrate and / or the second substrate is one of steel, aluminum alloy and copper alloy.

4. The composite profile according to claim 2, characterized in that, The third substrate is one of polyamide, polyvinyl chloride, and polybutylene terephthalate.

5. The composite profile according to claim 1, characterized in that, The third substrate and the first substrate, as well as the third substrate and the second substrate, are fixedly connected.

6. The composite profile according to claim 1, characterized in that, There are thermally fused connections between the third substrate and the first substrate, as well as between the third substrate and the second substrate.

7. The composite profile according to any one of claims 1 to 6, characterized in that, The first substrate includes a first side support (11) and two first inner supports (12) fixedly connected to the first side support (11); the second substrate includes a second side support (21) and two second inner supports (22) fixedly connected to the second side support (21); the two first inner supports (12) of the first substrate and the two second inner supports (22) of the second substrate are arranged face to face, so that two gaps are formed between the two first inner supports (12) and the two second inner supports (22); The third substrate includes a third inner support (31), a third inner support (31) of the third substrate is connected between the two second side inner supports (22) on the left side, and a third inner support (31) of the second third substrate is connected between the two second side inner supports (22) on the right side, and the two third inner supports (31) are located in the two notches respectively.

8. The composite profile according to claim 7, characterized in that, The third substrate also includes a transverse support (32) fixed on the third inner support (31). When the two notches are staggered, the horizontal support (32) is fixed on the second side inner support (22); when the two notches are aligned, the cross sections of the two third substrates have a U-shaped structure.

9. The composite profile according to claim 1, characterized in that, A fourth substrate is fixed on one side of the first substrate and the second substrate back to back, and a cavity is formed between the fourth substrate and the first substrate or / and between the fourth substrate and the second substrate.

10. The composite profile according to claim 1, characterized in that, It also includes a fifth substrate (4) that covers the first substrate and the second substrate, the fifth substrate (4) being integrally connected with the third substrate, and the fifth substrate (4) covering the first substrate and the second substrate.

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