Anti-aging aluminum alloy door frame
By incorporating built-in grooves and reinforcing bars inside the aluminum alloy door frame, and applying a composite coating, the problems of oxidation, fading, and corrosion of traditional aluminum alloy door frames in outdoor environments are solved, thus improving structural strength and durability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG AN DOOR & WINDOW CO LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-04-24
AI Technical Summary
Traditional aluminum alloy door frames are easily affected by ultraviolet rays, rain, salt spray and other environmental factors when exposed to the outdoors for a long time, which leads to surface oxidation, fading and corrosion, reduced structural strength and inconvenience in use.
An internal groove is set inside the door frame body, and reinforcing rods and ribs are installed in the internal groove. The exterior is coated with a composite coating structure, including an anodized layer, a sealing layer and a fluorocarbon coating. Combined with the design of connecting grooves, guide grooves, drainage pipes and sealing caps, the bending strength and corrosion resistance are improved.
It significantly improves the bending strength, corrosion resistance, and UV resistance of aluminum alloy door frames, prevents surface oxidation and corrosion, and extends service life.
Smart Images

Figure CN224161615U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aluminum alloy door frame technology, and in particular to an aging-resistant aluminum alloy door frame. Background Technology
[0002] Aluminum alloy door frames refer to door frame components made of aluminum alloy profiles. These frames are manufactured by processing surface-treated aluminum alloy profiles through processes such as blanking, drilling, milling, and tapping. They are then assembled using connectors, sealing materials, and opening / closing hardware. Traditional aluminum alloy door frames, when exposed to the outdoors for extended periods, are susceptible to the effects of ultraviolet radiation, rain, and salt spray, leading to surface oxidation, fading, corrosion, and even a decrease in structural strength, resulting in inconvenience. To address these issues, we have introduced an aging-resistant aluminum alloy door frame. Utility Model Content
[0003] This utility model discloses an aging-resistant aluminum alloy door frame, which aims to solve the technical problem that traditional aluminum alloy door frames are easily affected by ultraviolet rays, rain, salt spray and other environmental factors when exposed to the outdoors for a long time, resulting in surface oxidation, fading, corrosion and even a decrease in structural strength, making them inconvenient to use.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] An aging-resistant aluminum alloy door frame includes a door frame body. The inner wall of the door frame body has an internal groove. A first reinforcing rod is fixedly installed at equal intervals inside the left and right sides of the internal groove. A first reinforcing rib is fixedly installed inside the left and right sides of the internal groove, inside the first reinforcing rod. A second reinforcing rod is fixedly installed at equal intervals inside the top and bottom sides of the internal groove. A second reinforcing rib is fixedly installed inside the top and bottom sides of the internal groove, inside the second reinforcing rod. The outer side of the door frame body is provided with a composite coating structure.
[0006] During use, the built-in groove inside the door frame body, with No. 1 reinforcing rod, No. 1 reinforcing rib, No. 2 reinforcing rod, and No. 2 reinforcing rib inside the groove, helps to improve bending strength; and the composite structure of the composite coating significantly improves corrosion resistance and UV resistance; solving the technical problem that traditional aluminum alloy door frames are easily affected by UV rays, rain, salt spray and other environmental factors when exposed to the outdoors for a long time, resulting in surface oxidation, fading, corrosion, and even a decrease in structural strength, making them inconvenient to use.
[0007] In a preferred embodiment, the composite coating structure is sequentially coated from the inside out with an anodic oxide layer, a sealing layer, and a fluorocarbon coating. The anodic oxide layer is set to have a thickness of 10-15 μm and is formed into a porous alumina layer by sulfuric acid anodizing. The sealing layer is set to fill the pores of the oxide film using a nickel salt sealing process. The fluorocarbon coating is set to be a sprayed polyvinylidene fluoride coating with a thickness of 20-30 μm.
[0008] The anodized layer, sealing layer, and fluorocarbon coating help to enhance the overall resistance of the door frame to ultraviolet radiation and chemical corrosion.
[0009] In a preferred embodiment, a connecting groove is provided on one side of the door frame body near the bottom, and a guide groove is provided at equal intervals on the bottom of the door frame body and on one side of the connecting groove. A drain pipe is fixedly installed through one side of the connecting groove, and an avoidance groove is provided on the surface of the door frame body near the drain pipe. A sealing cover is rotatably connected inside the avoidance groove, and the sealing cover is threaded to the outside of the drain pipe.
[0010] By using a combination of connecting grooves, guide grooves, drain pipes, clearance grooves, and sealing caps, it is easy to drain the liquid accumulated inside the built-in groove in a timely manner.
[0011] In a preferred embodiment, a fixing frame is fixedly installed on one side of the interior of the door frame body, and a sealing frame is fixedly installed on the side of the fixing frame near the door leaf.
[0012] By setting up a fixed frame and a sealing frame, the sealing effect can be enhanced when adding door panels later.
[0013] In a preferred embodiment, both the first reinforcing rod and the second reinforcing rod have hexagonal cross-sections.
[0014] By setting both the No. 1 and No. 2 reinforcing rods to have hexagonal cross-sections, the support effect is better. Furthermore, the gaps inside the built-in groove can be filled with concrete or polyurethane foam according to the needs of use, which can reduce the risk of heat conduction and condensation.
[0015] The aging-resistant aluminum alloy door frame provided by this utility model has the following advantages:
[0016] Firstly, during use, the built-in groove inside the main body of the door frame, and the No. 1 reinforcing rod, No. 1 reinforcing rib, No. 2 reinforcing rod, and No. 2 reinforcing rib installed inside the built-in groove, help to improve the bending strength; and the composite structure of the composite coating structure significantly improves the corrosion resistance and UV resistance; thus solving the technical problem that traditional aluminum alloy door frames are easily affected by UV rays, rain, salt spray and other environmental factors when exposed to the outdoors for a long time, resulting in surface oxidation, fading, corrosion, and even a decrease in structural strength, making them inconvenient to use. Attached Figure Description
[0017] Figure 1 This is a front-view perspective view of an aging-resistant aluminum alloy door frame proposed in this utility model.
[0018] Figure 2 This is a front cross-sectional perspective view of an aging-resistant aluminum alloy door frame proposed in this utility model.
[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle.
[0020] Figure 4 This is a three-dimensional side view of an aging-resistant aluminum alloy door frame proposed in this utility model.
[0021] Figure 5 for Figure 4 Enlarged view of point B in the middle.
[0022] In the attached diagram: 1. Door frame body; 2. Internal groove; 3. First reinforcing rod; 4. First reinforcing rib; 5. Second reinforcing rod; 6. Second reinforcing rib; 7. Composite coating structure; 71. Anodized layer; 72. Sealing layer; 73. Fluorocarbon coating; 8. Connecting groove; 9. Guide groove; 10. Drain pipe; 11. Clearance groove; 12. Sealing cover; 13. Fixing frame; 14. Sealing frame. Detailed Implementation
[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0024] The aging-resistant aluminum alloy door frame disclosed in this utility model is mainly used in scenarios where thermocouple temperature sensors are installed.
[0025] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5An aging-resistant aluminum alloy door frame includes: a door frame body 1, an inner wall of the door frame body 1 having an internal groove 2, a first reinforcing rod 3 being fixedly installed at equal intervals on the left and right sides of the internal groove 2, a first reinforcing rib 4 being fixedly installed on the left and right sides of the internal groove 2 inside the first reinforcing rod 3, a second reinforcing rod 5 being fixedly installed at equal intervals on the top and bottom sides of the internal groove 2, a second reinforcing rib 6 being fixedly installed on the top and bottom sides of the internal groove 2 inside the second reinforcing rod 5, and a composite coating structure 7 being provided on the outer side of the door frame body 1.
[0026] In this embodiment, the built-in groove 2 inside the door frame body 1, and the first reinforcing rod 3, the first reinforcing rib 4, the second reinforcing rod 5, and the second reinforcing rib 6 installed inside the built-in groove 2, help to improve the bending strength; and the composite structure of the composite coating structure 7 significantly improves the corrosion resistance and UV resistance; thus solving the technical problem that traditional aluminum alloy door frames are easily affected by UV rays, rain, salt spray and other environmental factors when exposed to the outdoors for a long time, resulting in surface oxidation, fading, corrosion, and even a decrease in structural strength, making them inconvenient to use.
[0027] The composite coating structure 7 is coated with an anodized layer 71, a sealing layer 72, and a fluorocarbon coating 73 from the inside out. The anodized layer 71 is 10-15 μm thick and is formed into a porous alumina layer by sulfuric acid anodizing. The sealing layer 72 is filled with oxide film pores by nickel salt sealing process. The fluorocarbon coating 73 is a polyvinylidene fluoride coating with a thickness of 20-30 μm. The anodized layer 71, sealing layer 72, and fluorocarbon coating 73 help to enhance the overall resistance of the door frame body 1 to ultraviolet rays and chemical corrosion.
[0028] The door frame body 1 has a connecting groove 8 on one side near the bottom, and a guide groove 9 is provided at equal intervals on the bottom of the door frame body 1 and on one side of the connecting groove 8. A drain pipe 10 is fixedly installed through one side of the connecting groove 8. An avoidance groove 11 is provided on the surface of the door frame body 1 near the drain pipe 10. A sealing cover 12 is rotatably connected inside the avoidance groove 11 and is threaded to the outside of the drain pipe 10. The connection groove 8, the guide groove 9, the drain pipe 10, the avoidance groove 11 and the sealing cover 12 are used in combination to facilitate the timely discharge of liquid accumulated inside the built-in groove 2.
[0029] Among them, a fixed frame 13 is fixedly installed on one side of the interior of the door frame body 1, and a sealing frame 14 is fixedly installed on the side of the fixed frame 13 near the door leaf; by setting the fixed frame 13 and the sealing frame 14, the sealing effect is enhanced when the door leaf is added later.
[0030] Among them, the cross-sections of the first reinforcing rod 3 and the second reinforcing rod 5 are both set with hexagonal structures; by setting the cross-sections of the first reinforcing rod 3 and the second reinforcing rod 5 to be hexagonal, the support effect is better, and concrete or polyurethane foam can be filled into the gap inside the built-in groove 2 according to the needs of use, which can reduce the risk of heat conduction and condensation.
[0031] Working principle: During use, the built-in groove 2 opened inside the door frame body 1, and the No. 1 reinforcing rod 3, No. 1 reinforcing rib 4, No. 2 reinforcing rod 5 and No. 2 reinforcing rib 6 set inside the built-in groove 2, help to improve the bending strength; and through the composite structure of the composite coating structure 7, the corrosion resistance and UV resistance are significantly improved.
[0032] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Substitutions may include replacements for some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the scope of protection of this utility model.
Claims
1. An aging-resistant aluminum alloy door frame, comprising a door frame body (1), characterized in that, The inner wall of the door frame body (1) is provided with an internal groove (2). A first reinforcing rod (3) is fixedly installed at equal intervals on the left and right sides of the internal groove (2). A first reinforcing rib (4) is fixedly installed inside the left and right sides of the internal groove (2) and inside the first reinforcing rod (3). A second reinforcing rod (5) is fixedly installed at equal intervals on the top and bottom sides of the internal groove (2). A second reinforcing rib (6) is fixedly installed inside the top and bottom sides of the internal groove (2) and inside the second reinforcing rod (5). A composite coating structure (7) is provided on the outer side of the door frame body (1).
2. The aging-resistant aluminum alloy door frame according to claim 1, characterized in that, The composite coating structure (7) is coated with an anodized layer (71), a sealing layer (72), and a fluorocarbon coating (73) from the inside out. The anodized layer (71) is set to have a thickness of 10-15 μm and is formed by sulfuric acid anodizing to form a porous alumina layer. The sealing layer (72) is set to fill the pores of the oxide film using a nickel salt sealing process. The fluorocarbon coating (73) is set to be a polyvinylidene fluoride coating with a thickness of 20-30 μm.
3. The aging-resistant aluminum alloy door frame according to claim 1, characterized in that, A connecting groove (8) is provided on one side of the door frame body (1) near the bottom. A guide groove (9) is provided at equal intervals on the bottom of the door frame body (1) and on one side of the connecting groove (8). A drain pipe (10) is fixedly installed inside one side of the connecting groove (8). An avoidance groove (11) is provided on the surface of the door frame body (1) near the drain pipe (10). A sealing cover (12) is rotatably connected inside the avoidance groove (11). The sealing cover (12) is threaded to the outside of the drain pipe (10).
4. The aging-resistant aluminum alloy door frame according to claim 1, characterized in that, A fixed frame (13) is fixedly installed on one side inside the main body (1) of the door frame, and a sealing frame (14) is fixedly installed on the side of the fixed frame (13) near the door leaf.
5. The aging-resistant aluminum alloy door frame according to claim 1, characterized in that, The cross-sections of both the first reinforcing rod (3) and the second reinforcing rod (5) are provided with hexagonal structures.