Corner brace for door leaf
By designing an L-shaped corner bracket for door panels, and combining aluminum alloy, nylon, and polycarbonate layers, the problems of installation stability and aesthetics of sliding door and window corner brackets were solved, achieving lightweight, durability, and replaceability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-04-03
AI Technical Summary
The existing corner brackets for sliding doors and windows lack aesthetics and stability during installation, and the choice of materials limits their application scenarios and durability.
An angle bracket for door panels was designed, which adopts an L-shaped structure with an upper connecting rod and a lower connecting rod. The internal structure contains an aluminum alloy layer and is covered with nylon and polycarbonate layers. Combined with a sliding block and a limiting block structure, it can achieve easy fixing, reinforced insulation and replaceability.
It improves the installation stability and aesthetics of corner brackets, while reducing weight, increasing corrosion resistance and impact resistance, and supporting glue fixation and replaceability.
Smart Images

Figure CN224078995U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of door panel technology, specifically to a corner bracket for door panels. Background Technology
[0002] Sliding doors and windows are a popular modern window design. Sliding windows use a sliding operation method, which can open the window to the desired size and height, offering good flexibility. When installing and splicing the exterior door panels of sliding doors and windows, corner brackets are installed. When selecting corner brackets inside the door panels, factors such as load-bearing capacity, durability, and sliding stability must be considered.
[0003] Common corner brackets are made of materials such as metal and nylon. Due to different usage scenarios, the advantages and disadvantages of corner brackets vary. Especially during installation, to enhance aesthetics and stability, adhesive is often used for fixing, but metal surfaces are relatively smooth and less prone to adhesion. Therefore, we propose a corner bracket for door panels to address these issues. Utility Model Content
[0004] The purpose of this utility model is to provide a corner bracket for door panels to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a door panel corner bracket, including a lower connecting rod, a top groove is provided on the top of the lower connecting rod, an upper connecting rod is connected to the top left side of the lower connecting rod, a rear groove is provided on the left side of the upper connecting rod, and a diamond groove is provided on the right side of the upper connecting rod.
[0006] As a further technical solution of this utility model, the upper connecting rod and the lower connecting rod are integrated into one structure, and the left side of the upper connecting rod and the bottom of the lower connecting rod are provided with diamond grooves.
[0007] As a further technical solution of this utility model, the rear groove is equally spaced on the left side of the upper connecting rod, and the top groove is equally spaced on the top of the lower connecting rod.
[0008] As a further technical solution of this utility model, the lower connecting rod is provided with an aluminum alloy layer inside, a nylon outer layer is provided outside the aluminum alloy layer, and a polycarbonate layer is provided outside the nylon outer layer.
[0009] As a further technical solution of this utility model, the polycarbonate layer and the nylon outer layer are sequentially coated on the outside of the upper connecting rod and the lower connecting rod, and an aluminum alloy layer is provided inside the upper connecting rod and the lower connecting rod.
[0010] As a further technical solution of this utility model, a sliding groove is provided on the left side of the lower connecting rod, a sliding block is inserted inside the sliding groove, a lower protrusion is connected to the bottom of the sliding block, and a rear limiting block is connected to the rear end of the sliding block.
[0011] As a further technical solution of this utility model, the lower protrusion and the rear limiting block are integrated into one structure. The rear limiting block is inserted into the sliding groove on the left side of the lower connecting rod to fix the lower protrusion on the left side of the lower connecting rod.
[0012] As a further technical solution of this utility model, the sliding block is threadedly connected to the rear end of the sliding groove and contacts the rear end of the lower connecting rod.
[0013] Compared with the prior art, the beneficial effects of this utility model are: this type of door corner bracket not only achieves the functions of easy fixing and reinforcement insulation, but also the function of replacement;
[0014] (1) By setting a structure that facilitates fixing, the present invention is beneficial as follows: When using the upper connecting rod and the lower connecting rod are L-shaped, when splicing the two sets of door panels, the upper connecting rod and the lower connecting rod at both ends of the L-shaped corner bracket are inserted into the two sets of door panel components respectively. Then, glue is injected into the interior of the two sets of door panels. After the door panels are spliced, the glue inside the door panels will enter the back groove on the outside of the upper connecting rod and the top groove on the top of the lower connecting rod. The diamond groove on the right side of the upper connecting rod and the bottom of the lower connecting rod will also increase the gripping force of the glue, and increase the L-shaped corner bracket installation and fixing type of the upper connecting rod and the lower connecting rod, thereby realizing the function of easy fixing.
[0015] (2) By setting up a reinforced insulation structure, the advantages of this utility model are as follows: When in use, the L-shaped corner bracket composed of the upper connecting rod and the lower connecting rod has an aluminum alloy layer inside the upper connecting rod and the lower connecting rod, so that the weight of the corner bracket body is reduced and corrosion resistant while the hardness remains unchanged. The nylon outer layer set outside the aluminum alloy layer increases the insulation of the corner bracket body. The polycarbonate layer set outside the nylon outer layer can increase the temperature resistance and impact resistance of the corner bracket, thereby realizing the reinforced insulation function.
[0016] (3) By setting a replaceable structure, the present invention is beneficial in that: when in use, the lower protrusion carries the sliding block and inserts it into the sliding groove opened on the left side of the lower connecting rod. After the front end of the sliding block contacts the front end of the lower connecting rod, the connection between the rear limit block and the rear end of the sliding block contacts the rear end of the lower connecting rod, so that the lower protrusion is fixed on the lower left side of the upper connecting rod and the lower connecting rod, thereby realizing the replaceable function. Attached Figure Description
[0017] Figure 1 This is a frontal three-dimensional structural diagram of the present invention;
[0018] Figure 2 This is a front view structural diagram of the upper connecting rod of this utility model;
[0019] Figure 3 This is an enlarged cross-sectional view of the lower connecting rod of this utility model.
[0020] Figure 4 This is a rear view schematic diagram of the lower protrusion and lower connecting rod of this utility model.
[0021] In the diagram: 1. Upper connecting rod; 2. Rear groove; 3. Lower protrusion; 4. Top groove; 5. Lower connecting rod; 6. Nylon outer layer; 7. Polycarbonate layer; 8. Aluminum alloy layer; 9. Diamond groove; 10. Rear limit block; 11. Sliding groove; 12. Sliding block. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figure 1-4 An embodiment of this utility model is provided: a door panel corner bracket, including a lower connecting rod 5, a top groove 4 is provided at the top of the lower connecting rod 5, an upper connecting rod 1 is connected to the top left side of the lower connecting rod 5, a rear groove 2 is provided on the left side of the upper connecting rod 1, and a diamond groove 9 is provided on the right side of the upper connecting rod 1.
[0024] The upper connecting rod 1 and the lower connecting rod 5 are integrated into one structure. The left side of the upper connecting rod 1 and the bottom of the lower connecting rod 5 are provided with diamond grooves 9. The rear grooves 2 are equally spaced on the left side of the upper connecting rod 1, and the top grooves 4 are equally spaced on the top of the lower connecting rod 5.
[0025] Specifically, such as Figure 1 and Figure 2 As shown, by setting up a structure that facilitates fixing, the upper connecting rod 1 and the lower connecting rod 5 are arranged in an L-shape during use. When splicing the two sets of door panels, the upper connecting rod 1 and the lower connecting rod 5 at both ends of the L-shaped corner bracket are inserted into the interior of the two sets of door panel components respectively. Then, glue is injected into the interior of the two sets of door panels. After the door panels are spliced, the glue inside the door panels will enter the rear groove 2 on the outside of the upper connecting rod 1 and the top groove 4 at the top of the lower connecting rod 5. The diamond groove 9 on the right side of the upper connecting rod 1 and the bottom of the lower connecting rod 5 will also increase the adhesion of the glue. This increases the L-shaped corner bracket installation and fixing type of the upper connecting rod 1 and the lower connecting rod 5, thereby achieving the function of easy fixing.
[0026] The lower connecting rod 5 has an aluminum alloy layer 8 inside, a nylon outer layer 6 outside the aluminum alloy layer 8, and a polycarbonate layer 7 outside the nylon outer layer 6.
[0027] A polycarbonate layer 7 and a nylon outer layer 6 are sequentially coated on the outside of the upper connecting rod 1 and the lower connecting rod 5, and an aluminum alloy layer 8 is provided inside the upper connecting rod 1 and the lower connecting rod 5.
[0028] Specifically, such as Figure 1 and Figure 3 As shown, by setting a reinforced insulation structure, the L-shaped corner bracket composed of the upper connecting rod 1 and the lower connecting rod 5 has an aluminum alloy layer 8 inside the upper connecting rod 1 and the lower connecting rod 5, which makes the corner bracket body lighter and more corrosion-resistant while maintaining the same hardness. The nylon outer layer 6 outside the aluminum alloy layer 8 increases the insulation of the corner bracket body. The polycarbonate layer 7 outside the nylon outer layer 6 can increase the temperature resistance and impact resistance of the corner bracket, thereby achieving the function of reinforced insulation.
[0029] A sliding groove 11 is provided on the left side of the lower connecting rod 5. A sliding block 12 is inserted inside the sliding groove 11. A lower protrusion 3 is connected to the bottom of the sliding block 12. A rear limit block 10 is connected to the rear end of the sliding block 12.
[0030] The lower protrusion 3 and the rear limiting block 10 are integrated. The rear limiting block 10 is inserted into the sliding groove 11 on the left side of the lower connecting rod 5, fixing the lower protrusion 3 to the left side of the lower connecting rod 5. The sliding block 12 is threaded to the rear end of the sliding groove 11 and contacts the rear end of the lower connecting rod 5.
[0031] Specifically, such as Figure 1 and Figure 4 As shown, by setting a replaceable structure, when in use, the lower protrusion 3 carrying the sliding block 12 is inserted into the sliding groove 11 opened on the left side of the lower connecting rod 5. After the front end of the sliding block 12 contacts the front end of the lower connecting rod 5, the connection between the rear limit block 10 and the rear end of the sliding block 12 contacts the rear end of the lower connecting rod 5, so that the lower protrusion 3 is fixed on the lower left side of the upper connecting rod 1 and the lower connecting rod 5, thereby realizing the replaceable function.
[0032] Working principle: In use, the lower protrusion 3 carrying the sliding block 12 is inserted into the sliding groove 11 on the left side of the lower connecting rod 5. After the front stop of the sliding block 12 contacts the front end of the lower connecting rod 5, the connection between the rear limit block 10 and the rear end of the sliding block 12 contacts the rear end of the lower connecting rod 5, fixing the lower protrusion 3 to the lower left side of the upper connecting rod 1 and the lower connecting rod 5. Then, the upper connecting rod 1 and the lower connecting rod 5 are arranged in an L-shape. When splicing two sets of door panels, the upper connecting rod 1 and the lower connecting rod 5 at both ends of the L-shaped corner bracket are inserted into the two sets of door panel components respectively. Then, glue is injected into the interior of the two sets of door panels. After the door panels are spliced, the door panels are... The internal adhesive will enter the rear groove 2 on the outside of the upper connecting rod 1 and the top groove 4 on the top of the lower connecting rod 5. The diamond groove 9 on the right side of the upper connecting rod 1 and the bottom of the lower connecting rod 5 will also increase the adhesive's grip, making the upper connecting rod 1 and the lower connecting rod 5 L-shaped corner brackets more secure. Finally, an aluminum alloy layer 8 is set inside the upper connecting rod 1 and the lower connecting rod 5, which makes the corner bracket body lighter and more corrosion-resistant while maintaining the same hardness. A nylon outer layer 6 is set outside the aluminum alloy layer 8 to increase the insulation of the corner bracket body. A polycarbonate layer 7 is set outside the nylon outer layer 6, which can increase the corner bracket's temperature resistance and impact resistance.
[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A door panel bracket, comprising a lower connecting rod (5), characterized in that: The lower connecting rod (5) has a top groove (4) at its top, and the upper connecting rod (1) is connected to the left side of the top of the lower connecting rod (5). The upper connecting rod (1) has a rear groove (2) on its left side and a diamond groove (9) on its right side.
2. The corner bracket for a door leaf according to claim 1, characterized in that: The upper connecting rod (1) and the lower connecting rod (5) are integrated into one structure. The left side of the upper connecting rod (1) and the bottom of the lower connecting rod (5) are provided with diamond grooves (9).
3. A door leaf corner bracket according to claim 1, characterized in that: The rear groove (2) is equally spaced on the left side of the upper connecting rod (1), and the top groove (4) is equally spaced on the top of the lower connecting rod (5).
4. A door leaf corner bracket according to claim 1, characterized in that: The lower connecting rod (5) has an aluminum alloy layer (8) inside, a nylon outer layer (6) outside the aluminum alloy layer (8), and a polycarbonate layer (7) outside the nylon outer layer (6).
5. A door leaf corner bracket according to claim 4, characterized in that: The polycarbonate layer (7) and the nylon outer layer (6) are sequentially coated on the outside of the upper connecting rod (1) and the lower connecting rod (5), and an aluminum alloy layer (8) is provided inside the upper connecting rod (1) and the lower connecting rod (5).
6. A door leaf corner bracket according to claim 1, characterized in that: The lower connecting rod (5) has a sliding groove (11) on its left side. A sliding block (12) is inserted inside the sliding groove (11). A lower protrusion (3) is connected to the bottom of the sliding block (12). A rear limit block (10) is connected to the rear end of the sliding block (12).
7. A door leaf corner bracket according to claim 6, characterized in that: The lower protrusion (3) and the rear limiting block (10) are integrated. The rear limiting block (10) is inserted into the sliding groove (11) on the left side of the lower connecting rod (5) to fix the lower protrusion (3) on the left side of the lower connecting rod (5).
8. A door leaf corner bracket according to claim 6, characterized in that: The sliding block (12) is threadedly connected to the rear end of the sliding groove (11) and contacts the rear end of the lower connecting rod (5).