90-degree frame splicing aluminum frame door
The aluminum frame door, with its 45° beveled splicing and slotted installation, solves the problems of insufficient door frame stability and aesthetics, achieves efficient installation and good sealing, and improves the overall performance and production efficiency of the door.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN EVERGRANDE SOPHIA HOME FURNISHING CO LTD
- Filing Date
- 2025-04-22
- Publication Date
- 2026-06-09
AI Technical Summary
Existing door structures are inadequate in terms of frame stability and aesthetics. Traditional splicing methods are prone to gaps and deformation, the joints are unsightly and prone to rust, installation is complex and costly, and sealing is poor.
The aluminum frame is spliced with a 45° bevel and right-angle connectors, combined with slotted door panel installation and embedded screw connection, and equipped with sealing strips to ensure that the frame is stable, beautiful and sealed.
It improves the structural stability and aesthetics of the door, simplifies the installation process, enhances sealing and service life, and reduces production costs.
Smart Images

Figure CN224338858U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aluminum frame door technology, and more specifically, to a 90-degree spliced aluminum frame door. Background Technology
[0002] In the field of architectural decoration, doors, as important components for space division and passage, directly affect the user experience and the overall aesthetics of a building through their structure and performance. Traditional door structures come in various forms, but for the demands of modern architecture that seeks simplicity, beauty, and durability, some existing door structures have significant shortcomings.
[0003] Currently, most doors on the market use right-angle joints or other more complex splicing techniques for their frames. Doors with right-angle joints lack aesthetic refinement, and noticeable gaps easily appear at the joints, affecting the overall appearance. Moreover, this type of splicing method results in poor corner stability under external forces, which may lead to frame deformation over time, affecting the normal opening and closing of the door. While complex splicing techniques may improve stability to some extent, they are often accompanied by high production costs and long processing times, hindering large-scale production and market promotion.
[0004] For the connection between the door panel and the frame, some traditional methods use nailing or gluing. Nailing leaves nail holes on the surface of the door panel, which affects the appearance and may damage the door panel structure. In the long-term use of gluing, the glue is prone to aging and failure due to environmental factors such as temperature and humidity, which can cause the door panel to separate from the frame.
[0005] In addition, the existing door structure is not satisfactory in terms of details. For example, the screws at the frame connection are exposed, which not only affects the appearance, but may also affect the overall performance of the door due to problems such as rusting of the screws. Utility Model Content
[0006] Based on the above-mentioned technical problems, this utility model proposes a 90-degree spliced aluminum frame door.
[0007] A 90-degree interlocking aluminum frame door, comprising:
[0008] Aluminum Frame: The rectangular frame structure is formed by four aluminum frame strips joined end to end. Each aluminum frame strip has a 45° bevel at both ends. The bevels of adjacent aluminum frame strips are aligned and spliced together, and then connected and fixed by connectors. This 45° bevel splicing method, compared with the traditional right-angle splicing, allows the frame to form a tighter bond at the corners. From a mechanical point of view, the bevel increases the contact area at the splicing point. When subjected to external force, the force can be more evenly distributed on the splicing surface, thereby significantly improving the overall stability of the frame. At the same time, the bevel splicing is more visually smooth and refined, enhancing the aesthetics of the door.
[0009] Door panel: The inner side of the aluminum frame strip is provided with a slot, and the side of the door panel is installed in the middle of the aluminum frame by snapping into the slot. The slot installation method makes the installation process of the door panel simple and convenient, without the need for complicated tools or cumbersome operations. Moreover, this installation method can ensure a good fit between the door panel and the aluminum frame, so that the door panel is stably supported in the frame and is not easy to shake or shift.
[0010] Connector: A right-angled component with two right-angled segments fixed to adjacent and different aluminum frame strips to achieve a stable connection between the aluminum frame strips. The right-angled connector matches the splicing angle of the aluminum frame strips, which can accurately reinforce the splicing point and further enhance the stability of the frame.
[0011] Furthermore, the end of the aluminum frame strip is provided with a mounting slot, and the right-angle section of the connector can be fitted into the mounting slot. At the same time, the connector is provided with a fixing screw hole, and the end of the aluminum frame strip is provided with a corresponding pin hole that matches the fixing screw hole. By screwing a screw through the fixing screw hole and into the pin hole, the connector and the aluminum frame strip are connected and fixed. This connection method, through the cooperation of the mounting slot and the right-angle section of the connector, achieves the initial positioning of the connector and the aluminum frame strip, which facilitates the subsequent installation of screws. The screw connection provides reliable fastening force, ensuring that the connection between the aluminum frame strips is firm and not easy to loosen.
[0012] Furthermore, a slot is provided at the pin hole, and the screw nut is installed in the slot in an embedded manner, so that the surface of the screw after installation is basically flush with the end surface of the aluminum frame strip. The slot design allows the screw nut to be embedded, avoiding exposure of the screw nut. This not only makes the end surface of the aluminum frame strip smoother and more aesthetically pleasing, but also prevents problems such as scratching clothes and accumulating dust that may occur with exposed screw nuts. It also reduces the risk of screw nuts rusting and extends the service life of the door.
[0013] Furthermore, the slotted area is covered with a slot cover, the shape and color of which match the aluminum frame strip. The slot cover further enhances the overall aesthetics of the door, making it more visually unified and harmonious. At the same time, the slot cover also provides additional protection for the screws inside the slot, preventing dust, moisture, etc. from entering the slot and further slowing down the rusting rate of the screws.
[0014] Furthermore, a sealing strip is provided in the slot. The presence of the sealing strip greatly enhances the sealing between the door panel and the aluminum frame strip. It can effectively block dust, noise, and the exchange of hot and cold air, improving the comfort of the indoor environment. For example, in a dusty environment, the sealing strip can prevent dust from entering the room; in a noisy environment, it can effectively reduce the degree of external noise entering the room; in winter, it can reduce the loss of indoor heat, and in summer, it can block the entry of external heat, thus playing a certain role in energy saving.
[0015] Beneficial effects:
[0016] 1. In terms of structural stability, the 45° beveled aluminum frame and its matching right-angle connectors greatly improve the overall strength and stability of the frame. Compared with traditional splicing methods, it can better withstand external forces, reduce the risk of deformation, and extend the service life of the door.
[0017] 2. From an aesthetic point of view, the beveled splicing, embedded screw installation, and grooved cover that matches the aluminum frame strip make the door look more refined and smooth, without any abrupt connection marks, thus enhancing the overall aesthetics of the building.
[0018] 3. The sealing strip inside the card slot significantly enhances the door's sealing performance, effectively improving the indoor environment, reducing the impact of dust, noise, and air exchange, and enhancing the comfort of the living or use space.
[0019] 4. The door panel slot installation method makes the installation process simple and quick, which helps to improve production and installation efficiency and reduce costs. Attached Figure Description
[0020] Figure 1 A schematic diagram of the structure of this utility model is shown;
[0021] Figure 2 A structural schematic diagram of the aluminum frame strip and connectors is shown;
[0022] Figure 3 A schematic diagram of the slotted structure on the aluminum frame strip is shown;
[0023] Figure 4 A schematic diagram of a slot cover is shown.
[0024] In the attached diagram, 1 is the aluminum frame strip, 2 is the door panel, 3 is the beveled surface, 4 is the mounting slot, 5 is the pin hole, 6 is the fixing screw hole, 7 is the slot, 8 is the groove, 9 is the groove cover, 10 is the screw, and 11 is the connector. Detailed Implementation
[0025] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0026] like Figures 1-4 The diagram shows a 90-degree aluminum frame door, which consists of an aluminum frame made up of four aluminum frame strips 1 spliced together by a 45° bevel 3 and fixed by right-angle connectors 11, and a door panel 2 installed in the inner groove 7 of the aluminum frame strips 1.
[0027] 1. Assembly of the aluminum frame:
[0028] Four aluminum frame strips 1 are selected. Each aluminum frame strip 1 has a 45° beveled surface 3 pre-processed at both ends. Mounting slots 4 are provided at the ends of the aluminum frame strips 1. The size and shape of the mounting slots 4 are adapted to the right-angle section of the connector 11.
[0029] The right-angled segment of the right-angled connector 11 is inserted into the mounting slot 4 at the end of the adjacent aluminum frame strip 1. The connector 11 is provided with a fixing screw hole 6, and the end of the aluminum frame strip 1 is provided with a corresponding pin hole 5 that matches the fixing screw hole 6. The pin hole 5 is threaded. A screw 10 is passed through the fixing screw hole 6 on the connector 11 and screwed into the pin hole 5 at the end of the aluminum frame strip 1. In this way, the adjacent aluminum frame strips 1 are connected and fixed to form a rectangular aluminum frame structure. In this process, the alignment and splicing of the 45° beveled surface 3 ensures a tight fit at the corners of the aluminum frame, increases the contact area, and allows the frame to better distribute stress when subjected to external forces, thereby improving the overall stability. At the same time, the cooperation between the mounting slot 4 and the right-angled segment of the connector 11 plays a preliminary positioning role, which facilitates the accurate installation of the screw 10. The connection of the screw 10 provides a reliable fastening force, ensuring a firm connection between the aluminum frame strips 1.
[0030] In this embodiment, the aluminum frame strip 1 is generally a hollow structure, so the structure of the connector 11 matches the hollow structure of the aluminum frame strip 1: that is, it ensures that the connector 11 can be inserted into the hollow structure without significant shaking.
[0031] 2. Installation of door panel 2:
[0032] A slot 7 is machined on the inner side of the aluminum frame strip 1. The size of the slot 7 is adapted to the side of the door panel 2 to ensure that the side of the door panel 2 can be smoothly inserted into the slot 7.
[0033] Align the side of the door panel 2 with the groove 7 on the inside of the aluminum frame strip 1, and then push the door panel 2 along the groove 7 so that the side of the door panel 2 is completely inserted into the groove 7, thereby installing the door panel 2 in the middle position of the aluminum frame. This groove 7 installation method is simple and convenient to operate, requires no complicated tools or professional skills, and can ensure the fit between the door panel 2 and the aluminum frame, so that the door panel 2 is stably supported and is not easy to shake or shift.
[0034] 3. Treatment of screws 10 and nuts and installation of slot cover 9:
[0035] A slot 8 is made at the pin hole 5 at the end of the aluminum frame strip 1. The depth and size of the slot 8 are just enough to accommodate the nut of the screw 10. After the screw 10 passes through the fixing screw hole 6 of the connector 11 and is screwed into the pin hole 5 of the aluminum frame strip 1, the nut of the screw 10 is installed in the slot 8 in an embedded manner, so that the surface of the screw 10 is basically flush with the surface of the end of the aluminum frame strip 1. This not only makes the end of the aluminum frame strip 1 look flatter and more beautiful, but also avoids problems such as scratching clothes, accumulating dust, and rusting caused by the exposed nut of the screw 10.
[0036] Cover the groove 8 with a groove cover 9 that matches the shape and color of the aluminum frame strip 1. The groove cover 9 can be installed and fixed by simple snap-fit or glue. The groove cover 9 not only further enhances the overall aesthetics of the door, making it more visually harmonious and unified, but also provides additional protection for the screws 10 in the groove 8, effectively preventing dust, moisture and other substances from entering, further slowing down the rusting speed of the screws 10 and extending the service life of the door.
[0037] like Figure 4 As shown, it demonstrates two types of slotting:
[0038] 1. The slot 8 is circular and is located at a single pin hole 5, and is covered by a smaller slot cover 9;
[0039] 2. The slot 8 is long and narrow, and the slot 8 covers multiple pin holes 5. A larger slot cover 9 is used to complete the coverage.
[0040] 4. Installation of sealing strips:
[0041] A sealing strip is installed in the groove 7 on the inner side of the aluminum frame strip 1. The sealing strip has good elasticity and flexibility and can fit tightly against the side of the door panel 2 and the inner wall of the groove 7.
[0042] In practical applications, such as in areas with heavy sandstorms, sealing strips can effectively prevent dust from entering the room and keep the indoor environment clean. In noisy areas such as near roads, they can significantly reduce the amount of external noise entering the room, creating a quiet living or working space. In different seasons, sealing strips can also reduce the exchange of heat between indoor and outdoor air, achieving a certain energy-saving effect. In winter, they reduce indoor heat loss, and in summer, they block the entry of external heat, improving indoor comfort.
[0043] Through the installation and coordination of the above components, the assembly of the 90-degree spliced aluminum frame door is completed. This type of door is structurally stable and reliable, with a significantly improved aesthetic appeal, and also possesses excellent sealing performance, meeting the high-quality requirements of modern buildings for doors and windows. In different usage environments, such as the humid environment in the south, sealing strips and screws of better corrosion resistance can be selected to further enhance the door's performance. In the cold northern regions, the sealing strips can be appropriately thickened to enhance their thermal insulation performance. During large-scale production, standardized molds can be used to produce components such as aluminum frame strips and connectors, improving production efficiency and ensuring consistent product quality.
[0044] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A 90-degree interlocking aluminum frame door, characterized in that, include: The aluminum frame is a rectangular frame structure formed by four aluminum frame strips (1) connected end to end. Each aluminum frame strip (1) has a 45° bevel (3) at both ends. The bevels (3) at the ends of adjacent aluminum frame strips (1) are aligned and spliced, and are connected and fixed by connectors (11). The door panel (2) has a slot (7) on the inner side of the aluminum frame strip (1), and the side of the door panel (2) is installed in the middle of the aluminum frame by snapping into the slot (7). The connector (11) is a right-angled component, with its two right-angled segments fixed to adjacent and different aluminum frame strips (1) respectively, so as to achieve a stable connection between the aluminum frame strips (1).
2. The 90-degree spliced aluminum frame door according to claim 1, characterized in that, The aluminum frame strip (1) has an installation slot (4) at its end. The right-angle section of the connector (11) can be inserted into the installation slot (4). At the same time, the connector (11) has a fixing screw hole (6). The aluminum frame strip (1) has a corresponding pin hole (5) that matches the fixing screw hole (6). The connector (11) is connected and fixed to the aluminum frame strip (1) by screwing the screw (10) through the fixing screw hole (6) into the pin hole (5).
3. The 90-degree spliced aluminum frame door according to claim 2, characterized in that, A slot (8) is provided at the pin hole (5), and the nut of the screw (10) is installed in the slot (8) in an embedded manner, so that the surface of the screw (10) is basically flush with the end surface of the aluminum frame strip (1) after installation.
4. The 90-degree interlocking aluminum frame door according to claim 3, characterized in that, The slot (8) is covered by a slot cover (9), the shape and color of which match the aluminum frame strip (1).
5. The 90-degree spliced aluminum frame door according to claim 1, characterized in that, A sealing strip is provided inside the card slot (7).