Corner brace
By using a snap-fit corner bracket design, the problems of complex installation and difficult disassembly caused by screw fixing in existing technologies are solved, enabling rapid assembly and convenient disassembly, and improving the installation efficiency and maintenance convenience of air purification devices.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-03-06
AI Technical Summary
The corner brackets of existing air purification devices are fixed with screws, which makes installation complicated, time-consuming and difficult to disassemble, making it difficult to meet the needs of rapid assembly and maintenance.
The corner bracket design with a snap-fit structure includes deformable first and second snap-fit parts, with buckles and openings on the inner side. It enables quick assembly through snap-fit and quick disassembly by releasing the buckles by applying external force.
It improves the installation efficiency and maintenance convenience of air purification devices, reduces maintenance time and workload, and can be installed and disassembled without the aid of tools, enhancing connection stability and disassembly convenience.
Smart Images

Figure CN223975356U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of connector technology, specifically to a corner bracket. Background Technology
[0002] Air purification devices typically employ a frame structure to facilitate component installation and maintenance. Corner brackets, as important components for frame connection, are widely used to secure the outer casing, filter support, or internal support structure of the air purification device.
[0003] However, existing air purifiers mostly use screw-fixed corner brackets, requiring screwdrivers and power tools to tighten multiple screws individually during installation. This process is complex, time-consuming, and unsuitable for rapid assembly requirements in production. Secondly, during maintenance or component replacement, users need to remove each screw to loosen the corner bracket, increasing maintenance workload and potentially making disassembly difficult due to rusted or damaged screws. Therefore, there is an urgent need for a screwless corner bracket to improve assembly convenience and reduce disassembly difficulty. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a corner bracket that overcomes the shortcomings of the existing technology by using screws for fixing, which makes it unsuitable for rapid assembly.
[0005] To solve the above problems, this utility model discloses a corner code, including a corner code body, wherein the corner code body is provided with a first connector and a second connector;
[0006] The first connector has a deformable first snap-fit portion, and the second connector has a deformable second snap-fit portion. Both the first and second snap-fit portions are provided with latches, which protrude from the inner surfaces of the first and second snap-fit portions.
[0007] The first and second snap-fit portions are also provided with openings.
[0008] Furthermore, the opening also includes a bevel, which is recessed into the inner side of the first snap-fit portion and / or the inner side of the second snap-fit portion.
[0009] Furthermore, the opening also includes a vertical surface, and the connection between the vertical surface and the first snap-fit portion and / or the second snap-fit portion is chamfered.
[0010] Furthermore, the first snap-fit portion and / or the second snap-fit portion also includes a first strip hole and a second strip hole, wherein the first strip hole is disposed around three sides of the first snap-fit portion and / or the second snap-fit portion;
[0011] The second strip-shaped hole forms an elastic deformation portion, and the elastic deformation portion is located at the center of the first snap-fit portion and / or the second snap-fit portion.
[0012] Furthermore, the first connector and the second connector are vertically connected.
[0013] Furthermore, it also includes a baffle located at the vertical connection between the first connector and the second connector.
[0014] Furthermore, the outer side of the first snap-fit part and the outer side of the second plug-in part are provided with multiple guide grooves.
[0015] Furthermore, the first connector, the second connector, the first snap-fit portion, the second snap-fit portion, the buckle, the baffle, the guide groove, and the opening are integrally formed.
[0016] Secondly, this utility model embodiment also discloses a frame assembly, including the corner brackets of the frame as described above, wherein the frame includes a main board and side panels, and the main board has two side panels disposed opposite each other on both sides of its width; wherein:
[0017] The motherboard has snap-fit holes and guide portions on both sides in the extension direction that cooperate with the buckle;
[0018] The side plate is provided with a guide bar that mates with the guide groove on the side near the snap-fit hole.
[0019] Thirdly, this utility model embodiment also discloses an air filtration device, including the frame assembly described above.
[0020] This utility model embodiment achieves rapid assembly through a snap-fit structure, improving the installation efficiency and maintenance convenience of the air purification device. This utility model embodiment includes a first connector and a second connector, wherein each is provided with a deformable first snap-fit part and a second snap-fit part, and the inner side of the snap-fit part is provided with a buckle, which can automatically lock during insertion, improving connection stability. Since the first snap-fit part and the second snap-fit part are provided with openings, the corner bracket can be released by applying a certain external force during disassembly, achieving rapid disassembly.
[0021] Furthermore, compared to traditional screw fixing methods, this utility model embodiment can be installed without the need for screwdrivers or power tools. When repairing or replacing components, users can directly disassemble them without loosening each screw, which greatly reduces maintenance time and workload. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of the corner code body structure of this utility model;
[0024] Figure 2 This is a schematic diagram of the corner code body structure from another perspective of this utility model;
[0025] Figure 3 This is a top view of the corner bracket body of this utility model;
[0026] Figure 4 This is a rear view of the corner bracket body of this utility model;
[0027] Figure 5 This is a structural schematic diagram of the frame assembly of this utility model;
[0028] Figure 6 This is a side view of the frame of this utility model;
[0029] Figure 7 This is a schematic diagram of the frame structure of this utility model.
[0030] Figure label:
[0031] 100. Corner code body;
[0032] 11. First connector; 111. First snap-fit part;
[0033] 12. Second connector; 121. Second snap-fit part;
[0034] 13. Buckle;
[0035] 111a. The inner side of the first snap-fit part;
[0036] 121a. The inner side of the second snap-fit part;
[0037] 14. Opening; 141. Vertical plane; 142. Inclined plane;
[0038] 15. First strip hole;
[0039] 16. Second strip-shaped hole; 161. Elastic deformation part;
[0040] 17. Baffle;
[0041] 18. Guide groove;
[0042] 200. Border;
[0043] 21. Motherboard; 211. Snap-in slot; 212. Guide section;
[0044] 22. Side panel; 221. Guide bar. Detailed Implementation
[0045] The present invention will be further described in detail below with reference to the accompanying drawings.
[0046] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive element, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.
[0047] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0048] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0049] Reference Figure 1-4 This utility model embodiment provides a corner code, including 1. a corner code, characterized in that it includes:
[0050] Angle code body 100, wherein the angle code body 100 is provided with a first plug-in 11 and a second plug-in 12;
[0051] The first connector 11 is provided with a deformable first snap-fit portion 111, and the second connector 12 is provided with a deformable second snap-fit portion 121. Both the first snap-fit portion 111 and the second snap-fit portion 121 are provided with latches 13, which protrude from the inner surface 111a of the first snap-fit portion and the inner surface 121a of the second snap-fit portion.
[0052] The first snap-fit portion 111 and the second snap-fit portion 121 are also provided with openings 14.
[0053] This utility model embodiment achieves rapid assembly through a snap-fit structure, improving the installation efficiency and maintenance convenience of the air purification device. This utility model embodiment includes a first connector 11 and a second connector 12, each with a deformable first snap-fit portion 111 and a second snap-fit portion 121. The inner surface of the snap-fit portion is provided with a buckle 13, allowing it to automatically lock during insertion, improving connection stability. Since the first snap-fit portion 111 and the second snap-fit portion 121 have openings 14, the buckle 13 can be released by applying a certain external force during disassembly, achieving rapid disassembly.
[0054] Furthermore, compared to traditional screw fixing methods, this utility model embodiment can be installed without the need for screwdrivers or power tools. When repairing or replacing components, users can directly disassemble them without loosening each screw, which greatly reduces maintenance time and workload.
[0055] In one embodiment, the opening 14 further includes a bevel 142, which is recessed into the inner surface 111a of the first latching portion and / or the inner surface 121a of the second latching portion. Adding the bevel 142 to the opening 14 allows the user to more easily insert their fingers into the opening 14 and smoothly pry out the first latching portion 111 or the second latching portion 121 when disassembling the corner bracket. Because the bevel 142 is recessed, the fingers can naturally conform to the contact surface, reducing frictional resistance and improving the comfort and efficiency of disassembly. This makes it easier for the user to pry out the latching portion, avoiding damage due to excessive force. Furthermore, the opening 14 design not only supports manual disassembly but also allows the use of tools such as screwdrivers to pry it open, assisting in disassembly. This makes it suitable for different usage scenarios and improves the flexibility of corner bracket disassembly. Compared to the traditional right-angled or straight-edge opening 14 design, the inclined surface 142 structure of this embodiment effectively improves the ease of disassembly, making the maintenance and replacement of the corner brackets simpler and faster, and further enhancing the assembly efficiency of the air purification device.
[0056] In one embodiment, the opening 14 further includes a vertical surface 141, the connection between the vertical surface 141 and the first latching portion 111 and / or the second latching portion 121 being chamfered, optimizing the disassembly experience. The vertical surface 141 provides stable support for fingers or tools, improving the accuracy of force application and preventing slippage, while the chamfered design reduces the sharpness of the edges, making the disassembly process smoother, reducing resistance when applying force with fingers or tools, and reducing the risk of structural damage.
[0057] In one embodiment, the first snap-fit portion 111 and / or the second snap-fit portion 121 further includes a first strip hole 15 and a second strip hole 16, wherein the first strip hole 15 is disposed around three sides of the first snap-fit portion 111 and / or the second snap-fit portion 121.
[0058] The second strip-shaped hole 16 surrounds and forms an elastic deformation portion 161, and the elastic deformation portion 161 is located at the center of the first snap-fit portion 111 and / or the second snap-fit portion 121.
[0059] In this embodiment, the first strip-shaped hole 15 and the second strip-shaped hole 16 can be provided only in the first latching portion 111, only in the second latching portion 121, or simultaneously in both latching portions. The phrase "the first strip-shaped hole 15 is arranged around three sides of the first latching portion 111 and / or the second latching portion 121" in this embodiment indicates that the first strip-shaped hole 15 is distributed on three sides of the latching portion, meaning it is not a unidirectional opening, but rather forms an opening structure around most of the area of the latching portion. This helps to enhance the flexibility of the latching portion, making it easier to deform during insertion and disassembly, reducing operational difficulty, and improving assembly efficiency. This embodiment enhances the elastic deformation capability of the corner bracket by providing the first strip-shaped hole 15 and the second strip-shaped hole 16 on the first latching portion 111 and / or the second latching portion 121. The first strip hole 15 is arranged around three sides, so that the snap-fit part can be deformed more flexibly when plugging or disassembling, reducing assembly resistance and improving adaptability; the second strip hole 16 surrounds to form an elastic deformation part 161, and is located in the center of the snap-fit part, so that the snap-fit part is subjected to more uniform force, effectively avoiding the problem of breakage or jamming caused by excessive local force.
[0060] In one embodiment, the first connector 11 and the second connector 12 are vertically connected to ensure the stability and support capacity of the corner bracket in the frame structure. However, this embodiment is not limited to a vertical connection and can also be applied to connection methods at different angles. For example, the first connector 11 and the second connector 12 can be connected at an angle, such as 45° or other preset angles, to adapt to different installation requirements.
[0061] In one embodiment, the first connector 11 and the second connector 12 can adopt an adjustable angle connection design. Through a rotation or sliding structure, the angle can be adjusted according to different usage scenarios, thereby improving the applicability of the corner code.
[0062] In one embodiment, a baffle 17 is further included, located at the vertical connection between the first connector 11 and the second connector 12. In this embodiment, the baffle 17 is used to reinforce the filter element, ensuring that the filter element is stably fixed in the frame structure of the air purification device. Furthermore, the baffle 17 can provide additional support to prevent the filter element from loosening or shifting due to airflow impact, vibration, or long-term use.
[0063] In one embodiment, the outer side of the first snap-fit part 111 and the outer side of the second plug-in part 12 are also provided with a plurality of guide grooves 18, which are used in conjunction with the guide baffle 221 to make the plugging process smoother and avoid offset or misalignment during corner bracket installation.
[0064] In one embodiment, the first connector 11, the second connector 12, the first snap-fit portion 111, the second snap-fit portion 121, the buckle 13, the baffle 17, the guide groove 18, and the opening 14 are integrally formed, reducing assembly steps and improving production efficiency. Furthermore, the integrally formed structure eliminates assembly errors between components, improving the overall strength and stability of the corner bracket and reducing production costs. In addition, the integral forming avoids the loosening or detachment problems that may occur with traditional spliced components, improving the durability of the air purification device.
[0065] Secondly, referring to Figure 5-7 This utility model discloses a frame 200 assembly, including a frame 200 and the aforementioned corner bracket. The frame 200 assembly is used in the frame structure of an air purification device to provide stable support. (See reference...) Figure 5 The frame 200 of the frame 200 assembly consists of a main board 21 and two side plates 22. The main board 21 has side plates 22 on both sides along its width direction, forming a basic frame structure for supporting and fixing the filter, panel or other components of the air purification device.
[0066] Specifically, the mainboard 21 has snap-fit holes 211 and guide portions 212 on both sides along its length, for engaging with the snap-fit clips 13 of the corner bracket to achieve quick installation and fixation of the corner bracket. The design of the snap-fit holes 211 allows the corner bracket to automatically lock in place after insertion through the snap-fit clips 13, ensuring a secure connection and preventing loosening due to vibration or external force. Furthermore, the guide portions 212 ensure that the corner bracket slides in the correct direction during assembly, preventing installation failure or structural damage due to angular errors.
[0067] Specifically, a guide strip 221 is provided on the side of the side plate 22 near the snap-fit hole 211. This guide strip 221 cooperates with the guide groove 18 on the outer side of the corner bracket, thereby playing a guiding and stabilizing role during assembly. With this design, the corner bracket can slide along the guide groove 18 during insertion, making the installation process smoother, avoiding offset or misalignment during corner bracket installation, and improving assembly accuracy and efficiency. At the same time, the presence of the guide strip 221 can also enhance the fixing force of the corner bracket, enabling it to maintain good stability during long-term use and avoiding loosening or structural deformation caused by long-term vibration or external force.
[0068] Thirdly, this utility model also discloses an air filtration device, including the frame 200 component as described above, which improves the sealing and durability of the air filtration device, effectively optimizes the air purification effect, and extends the service life.
[0069] The above is only used to illustrate the technical solution of this utility model and not to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.
Claims
1. A corner key, characterized in that The utility model relates to an angle code, which comprises: An angle code body (100) is provided with a first plug connector (11) and a second plug connector (12); The first plug connector (11) is provided with a deformable first clamping part (111), the second plug connector (12) is provided with a deformable second clamping part (121), the first clamping part (111) and the second clamping part (121) are both provided with buckles (13), the buckles (13) are protruded from the inner side of the first clamping part (111a) and the inner side of the second clamping part (121a); wherein, The first clamping part (111) and the second clamping part (121) are also provided with openings (14).
2. The corner key of claim 1, wherein, The opening (14) also includes a slope (142), which is recessed in the inner side of the first clamping part (111a) and / or the inner side of the second clamping part (121a).
3. The corner key of claim 2, wherein, The opening (14) also includes a vertical surface (141), which is chamfered at the junction of the first clamping part (111) and / or the second clamping part (121).
4. The corner key of claim 1 wherein, The first clamping part (111) and / or the second clamping part (121) also include a first strip-shaped hole (15) and a second strip-shaped hole (16), the first strip-shaped hole (15) is arranged around three sides of the first clamping part (111) and / or the second clamping part (121); The second strip-shaped hole (16) forms an elastic deformation part (161), and the elastic deformation part (161) is located in the center of the first clamping part (111) and / or the second clamping part (121).
5. The corner key of claim 1 wherein, The first plug connector (11) and the second plug connector (12) are vertically connected.
6. The corner key of claim 5 wherein, It also includes a baffle (17) located at the vertical connection of the first plug connector (11) and the second plug connector (12).
7. The corner fitting of any of claims 1-6, wherein, The outer side of the first clamping part (111) and the outer side of the second plug connector (12) are also provided with a plurality of guide grooves (18).
8. The corner key of claim 7, wherein, The first plug connector (11), the second plug connector (12), the first clamping part (111), the second clamping part (121), the buckle (13), the baffle (17), the guide groove (18) and the opening (14) are integrally formed.
9. A bezel (200) assembly, characterized by, The utility model relates to a frame (200) and the angle code of any one of claims 1-8, the frame (200) includes a main plate (21) and a side plate (22), the main plate (21) is provided with two side plates (22) on both sides along the width, and wherein: The main plate (21) is provided with a clamping hole (211) matched with the buckle (13) and a guide part (212) on both sides along the length; The side plate (22) is provided with a guide baffle (221) matched with the guide groove (18) on the side close to the clamping hole (211).
10. An air filtration device, characterized by, The utility model relates to a frame (200) assembly as claimed in claim 9.