A durable door and window corner bracket
By setting anti-loosening pressure blocks, waterproof sealing rings, and damping pads on the main body of the door and window corner brackets, the problem of stud loosening and corrosion caused by vibration and moisture at the inner corners of aluminum alloy doors and windows is solved, thus improving the durability and stability of the inner corners of aluminum alloy doors and windows.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN JIEMA HARDWARE PRODUCTS CO LTD
- Filing Date
- 2025-07-02
- Publication Date
- 2026-06-30
AI Technical Summary
The 90-degree corner brackets of existing aluminum alloy doors and windows are prone to loosening and falling off due to collisions and vibrations during long-term use. In addition, external moisture can easily enter the connection and cause corrosion, reducing the vibration resistance and durability.
A durable door and window corner bracket is designed, which incorporates anti-loosening blocks, waterproof sealing rings, adhesive grooves, and damping pads on the bracket body. Through the cooperation of sliders and springs, the studs are sealed and installed stably, preventing loosening and corrosion.
It effectively prevents studs from loosening and falling off, avoids moisture entering the joints and causing corrosion, improves the vibration resistance and corrosion resistance of the inner corners of aluminum alloy doors and windows, and enhances installation stability.
Smart Images

Figure CN224432372U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of door and window corner bracket technology, and in particular to a durable door and window corner bracket. Background Technology
[0002] Aluminum alloy doors and windows are high-performance door and window products widely used in buildings. They are favored by the market for their lightweight, durability and aesthetics. At the inner corners of aluminum alloy doors and windows, a 90-degree corner bracket made of aluminum alloy needs to be installed.
[0003] The specific installation steps are as follows: First, grind and smooth the inner corner of the aluminum alloy door and window. Then, attach the corner bracket body to the inner corner of the aluminum alloy door and window. Use a marker to mark the drilling positions on the aluminum alloy door and window through the pre-set stud holes on the corner bracket body. Next, remove the corner bracket body and drill holes using a hand drill. Then, tap the corresponding internal thread holes at the drilled positions. Next, place the corner bracket body back on the inner corner of the aluminum alloy door and window. Finally, thread the matching studs through the stud holes and lock them into the internal thread holes to complete the installation.
[0004] Currently, existing aluminum alloy door and window corner brackets with a 90-degree angle are prone to damage over time. If the door or window body is subjected to impact or vibration, the impact force will be directly transmitted to the corner bracket body. This can cause the studs between the corner bracket body and the door or window body to loosen. Loose studs can lead to the detachment of the corner bracket body. Furthermore, external moisture can easily enter the connection between the studs and the corner bracket body, causing corrosion at the connection point. This significantly reduces the shock resistance, corrosion resistance, and durability of the 90-degree corner brackets used for the inner corners of aluminum alloy doors and windows.
[0005] Therefore, we designed a door and window corner bracket to meet the needs of practical applications. Utility Model Content
[0006] The purpose of this utility model is to address the aforementioned shortcomings in the existing technology by proposing a durable door and window corner bracket.
[0007] To achieve the above objectives, the present invention adopts the following technical solution:
[0008] Design a durable door and window corner bracket, including a corner bracket body, a fixing rib plate on the corner bracket body, a through opening on the fixing rib plate, a sliding groove in the through opening, a door and window body on the periphery of the corner bracket body, a screw groove on the door and window body, a slider slidably connected to the sliding groove, an inner top plate in the through opening, a sliding rod on the slider, a spring on the inner top plate, a connecting block on the sliding rod, an anti-detachment pressure block on the connecting block, and a sealing pad on the anti-detachment pressure block;
[0009] The corner bracket body is provided with a countersunk groove and an adhesive groove. A waterproof sealing ring is provided in the countersunk groove. A stud is inserted in the countersunk groove and a stud cap is provided on the stud.
[0010] A positioning plate is installed on the door / window body, and a damping pad is installed on the side wall of the corner bracket body.
[0011] In detail, the sealing pad is located at the bottom of the anti-detachment block, and the overall size of the sealing pad is not less than the opening size of the countersunk groove.
[0012] In detail, the glue-applying groove is a serrated inner groove, and there are two sets of glue-applying grooves, which are respectively set on the outer wall surface of the corner bracket body, with twenty in each set.
[0013] In detail, the stud passes through the countersunk slot and is threaded with the slot, and the stud cap is flush with the open end face of the countersunk slot.
[0014] In detail, the slide groove has an overall rectangular inner groove that slides and engages with the slider, the slide rod passes laterally through the connecting block and the fixed rib plate, and the two ends of the spring are fixedly set to the inner top plate and the slider, respectively.
[0015] In detail, the through opening is a longitudinally continuous fixed rib plate, and the inner top plate consists of two symmetrically arranged plates located at the inner corner of the through opening.
[0016] In detail, the positioning plate and the damping pad are a set, consisting of two symmetrical sets with an L-shaped structure. The damping pad is a polyurethane rubber pad layer with a thickness of five millimeters.
[0017] The design scheme proposed in this utility model has the following beneficial effects in application:
[0018] 1. This utility model symmetrically sets guide sliding positioning and pressing structures on the corner bracket body, and sets anti-detachment pressing blocks with sealing pads. At the same time, a waterproof sealing ring is set on the countersunk groove. When the stud is installed on the door and window body through the corner bracket body, the stud cap part is fully pressed and sealed. When the corner bracket body is subjected to vibration, it not only effectively prevents the stud and stud cap from loosening and slipping out of the countersunk groove, causing the corner bracket body to fall off, but also prevents external moisture from entering the connection between the stud and the corner bracket body and causing corrosion. Overall, it improves the vibration resistance, corrosion resistance, anti-detachment and durability of the 90-degree door and window corner bracket body used in the inner corner of aluminum alloy doors and windows.
[0019] 2. This utility model improves the stability of the corner bracket body when it is installed on the door and window body by setting a serrated adhesive groove on the main body of the corner bracket. Epoxy resin adhesive can be evenly applied to the adhesive groove first, and then the corner bracket body can be installed.
[0020] 3. This utility model symmetrically sets damping pads on the side wall of the corner bracket body and sets matching positioning plates on the door and window body. During installation, when the corner bracket body is snapped into the positioning plate, the damping pads will achieve a damping friction effect with the positioning plate, thus avoiding the situation where the corner bracket body slips or shifts when the studs are installed with a screwdriver later. Attached Figure Description
[0021] Figure 1 This is a three-dimensional schematic diagram of the corner bracket body of this utility model in its uninstalled state;
[0022] Figure 2 For the present utility model Figure 1 A partial 3D schematic diagram of the center corner code in its installed state;
[0023] Figure 3 For the present utility model Figure 1 A first-person perspective 3D schematic diagram of the main body of the center corner code;
[0024] Figure 4 For the present utility model Figure 3 A three-dimensional schematic diagram of the corner bracket body without an anti-detachment pressure block structure;
[0025] Figure 5 This is a second-view perspective three-dimensional schematic diagram of the corner code body of this utility model;
[0026] Figure 6 For the present utility model Figure 3 A perspective view of the main body of the center corner code.
[0027] In the diagram: 1. Corner bracket body; 11. Damping pad; 12. Glue application groove; 2. Door and window body; 21. Positioning plate; 22. Screw groove; 3. Rib plate; 31. Through opening; 32. Slide groove; 33. Slider; 4. Slide rod; 41. Connecting block; 5. Anti-detachment pressure block; 51. Sealing pad; 6. Stud; 61. Column cap; 7. Inner top plate; 71. Spring; 8. Countersunk groove; 81. Waterproof sealing ring. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0029] Reference Figures 1-6A durable door and window corner bracket includes a corner bracket body 1, a fixed rib plate 3 on the corner bracket body 1, a through opening 31 on the fixed rib plate 3, a sliding groove 32 inside the through opening 31, a door and window body 2 around the corner bracket body 1, a screw groove 22 on the door and window body 2, a slider 33 slidably connected to the sliding groove 32, an inner top plate 7 inside the through opening 31, a sliding rod 4 on the slider 33, a spring 71 on the inner top plate 7, a connecting block 41 on the sliding rod 4, an anti-detachment pressure block 5 on the connecting block 41, and a sealing pad 51 on the anti-detachment pressure block 5.
[0030] The corner bracket body 1 has a countersunk groove 8 and an adhesive groove 12. A waterproof sealing ring 81 is provided in the countersunk groove 8. A stud 6 is inserted in the countersunk groove 8. A stud cap 61 is provided on the stud 6.
[0031] A positioning plate 21 is set on the door and window body 2, a damping pad 11 is set on the side wall of the corner bracket body 1, and the waterproof sealing ring 81 is made of FKM fluororubber material with a thickness of three to five millimeters, which is resistant to chemical corrosion and high temperature.
[0032] The door and window body 2 is a commonly used aluminum alloy door and window, which is existing technology. Some existing structures are not drawn or labeled, so there is no need to elaborate.
[0033] It should be further noted that the sealing pad 51 is located at the bottom of the anti-detachment block 5. The overall size of the sealing pad 51 is not smaller than the opening size of the countersunk groove 8. The sealing pad 51 is a silicone pad with excellent high elasticity, damping, sealing performance, wear resistance, corrosion resistance, and aging resistance.
[0034] It should be further explained that the glue application groove 12 is a serrated inner groove. There are two sets of glue application grooves 12, which are respectively set on the outer wall of the corner bracket body 1. There are twenty in each set, which increases the effective bonding area of the corner bracket body 1 to the door and window body 2.
[0035] It should be further explained that the stud 6 passes through the countersunk hole 8 and is threaded with the screw groove 22. The stud cap 61 is flush with the open end face of the countersunk hole 8, which ensures the compression sealing effect of the anti-loosening pressure block 5, the stud cap 61, and the countersunk hole 8.
[0036] It should be further explained that the slide groove 32 has an overall rectangular inner groove and slides and engages with the slider 33. The slide rod 4 passes laterally through the connecting block 41 and the fixed rib plate 3. The two ends of the spring 71 are fixedly set to the inner top plate 7 and the slider 33 respectively. The spring 71 is a spiral steel spring, made of high-quality spring steel, which is highly elastic and stable.
[0037] It should be further explained that the through opening 31 is a longitudinally continuous fixed rib plate 3, and the inner top plate 7 is two symmetrically arranged at the inner corner of the through opening 31. The inner top plate 7 and the through opening 31 form a small triangular inner opening, which further improves the structural stability of the fixed rib plate 3.
[0038] It should be further noted that the positioning plate 21 and the damping pad 11 are a set, consisting of two symmetrical sets with an L-shaped structure. The damping pad 11 is a polyurethane rubber pad with a thickness of five millimeters, which has excellent damping friction elasticity. The positioning plate 21 is made of aluminum alloy.
[0039] Working method: During installation, the corner bracket body 1 is snapped into the inner corner of the door / window body 2. (Refer to...) Figure 1 and Figure 6 Taking the lower anti-detachment block 5 as an example, first move the slider 33 to the right, causing the slide rod 4 to slide horizontally to the right, which in turn causes the two anti-detachment blocks 5 to slide horizontally to the right. (See reference...) Figure 4 When the countersunk hole 8 is exposed, the spring 71 is compressed and deformed. Then, the stud 6 can be vertically inserted into the countersunk hole 8. Take a screwdriver and insert it into the preset cross groove on the stud cap 61 and rotate it clockwise. This will cause the stud 6 to rotate clockwise and lock with the preset screw groove 22 on the door and window body 2 (the screw groove 22 is the existing technology, which was previously positioned by a marker and drilled). Then, release the slider 33, the spring 71 will rebound, and the anti-detachment pressure block 5 will move to the left to reset. The sealing pressure pad 51 will then seal the countersunk hole 8 as a whole. At the same time, the stud cap 61 will squeeze the waterproof sealing ring 81 to seal the connection between the stud 6 and the corner bracket body 1. Similarly, the two vertical studs 6 on the other side can also be installed on the door and window body 2.
[0040] The above operation achieves a complete and overall sealing of the column cap 61, which not only effectively prevents the stud 6 and column cap 61 from loosening and slipping out of the countersunk groove 8, causing the corner bracket body 1 to fall off, but also prevents external moisture from entering the connection between the stud 6 and the corner bracket body 1 and causing corrosion. Overall, it improves the vibration resistance, corrosion resistance, anti-fall-off and durability of the 90-degree door and window corner bracket body 1 used in aluminum alloy doors and windows.
[0041] Moreover, before installation, epoxy resin adhesive can be evenly applied to the adhesive application groove 12 before installing the corner bracket body 1. At this time, the multiple adhesive application grooves 12 improve the bonding stability between the epoxy resin adhesive and the door and window body 2, further improving the stability of the corner bracket body 1 when it is installed on the door and window body 2.
[0042] In addition, during installation, when the corner bracket body 1 is snapped into the positioning plate 21, the damping pad 11 will achieve a damping friction effect with the positioning plate 21, so as to prevent the corner bracket body 1 from slipping and shifting when the stud 6 is installed with a screwdriver later.
[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A durable door and window corner bracket, comprising a bracket body (1), characterized in that: The corner code body (1) is provided with a rib plate (3), the rib plate (3) is provided with a through opening (31), the through opening (31) is provided with a sliding groove (32), the corner code body (1) is provided with a door and window body (2) around it, the door and window body (2) is provided with a screw groove (22), the sliding groove (32) is slidably connected to a slider (33), the through opening (31) is provided with an inner top plate (7), the slider (33) is provided with a sliding rod (4), the inner top plate (7) is provided with a spring (71), the sliding rod (4) is provided with a connecting block (41), the connecting block (41) is provided with an anti-detachment pressure block (5), and the anti-detachment pressure block (5) is provided with a sealing pad (51). The corner bracket body (1) is provided with a countersunk groove (8) and an adhesive groove (12). A waterproof sealing ring (81) is provided in the countersunk groove (8). A stud (6) is inserted in the countersunk groove (8). A stud cap (61) is provided on the stud (6). Positioning plate (21) is set on the door and window body (2), and damping pad (11) is provided on the side wall of the corner code body (1).
2. The durable door and window corner bracket according to claim 1, characterized in that: The sealing pad (51) is located at the bottom of the anti-detachment block (5), and the overall size of the sealing pad (51) is not less than the opening size of the countersunk groove (8).
3. A durable door and window corner bracket according to claim 1, characterized in that: The glue-applying groove (12) is a serrated inner groove. There are two sets of glue-applying grooves (12) and they are respectively located on the outer side wall of the corner bracket body (1). There are twenty in each set.
4. A durable door and window corner bracket according to claim 1, characterized in that: The stud (6) passes through the countersunk hole (8) and is threaded with the screw groove (22), and the stud cap (61) is flush with the opening end face of the countersunk hole (8).
5. A durable door and window corner bracket according to claim 1, characterized in that: The slide groove (32) has an overall rectangular inner groove and slides and engages with the slider (33). The slide rod (4) passes laterally through the connecting block (41) and the fixed rib plate (3). The two ends of the spring (71) are fixedly set to the inner top plate (7) and the slider (33) respectively.
6. A durable door and window corner bracket according to claim 1, characterized in that: The through opening (31) is a longitudinally continuous fixed rib plate (3), and the inner top plate (7) consists of two symmetrically arranged plates located at the inner corner of the through opening (31).
7. A durable door and window corner bracket according to claim 1, characterized in that: The positioning plate (21) and the damping pad (11) are a set, consisting of two symmetrical sets with an L-shaped structure. The damping pad (11) is a polyurethane rubber pad layer with a thickness of five millimeters.