Waterproof and dustproof cabinet frame

Abstract

The application discloses a waterproof and dustproof cabinet frame, and relates to the technical field of cabinet frames. The horizontal beam, the vertical beam and the column are made of the same profile, the profile comprises an inner frame part and an outer frame part, the outer frame part extends outward from an outer top point and forms a frame structure; a guide groove is formed between the outer frame part and each blocking part, the remaining peripheral walls of the guide groove are configured as a continuous closed structure except for a slot for embedding a plate part, so as to isolate the internal space of the guide groove from the internal space of the inner frame part; the edge of the plate part is inserted into the guide groove and is installed on the outer frame part. The profile specification type is reduced, the single profile itself has high bending and torsional strength, and the carrying capacity and structural stability of the overall frame of the cabinet frame are improved; external moisture and dust are prevented from penetrating into the inner cavity of the cabinet through the guide groove, the waterproof and dustproof grade of the cabinet frame is improved, and the outer surface of the cabinet is free of obvious protrusions or depressions, and the appearance is neat and beautiful.

Description

Technical Field

[0001] This invention relates to the field of cabinet frame technology, and in particular to a waterproof and dustproof cabinet frame. Background Technology

[0002] As fundamental equipment in fields such as power, communications, industrial automation, data centers, and IT, shelving units are primarily used to support and protect various electrical and electronic components and equipment. The overall protective performance, structural strength, and ease of assembly of shelving units largely depend on the structural design of their frame profiles and the corner connection methods between the profiles. With the increasing number of outdoor applications for shelving units, higher requirements are being placed on their waterproof and dustproof ratings, overall structural rigidity, and surface flatness.

[0003] Regarding waterproofing and dustproofing, existing outdoor cabinet frames typically feature rainproof visors on the top of the cabinet, sealing strips between the cabinet doors and the cabinet body, and drainage holes at the bottom of the cabinet. Some high-protection-level cabinet frames also employ double-layer cabinet structures or welded sealing processes. However, these solutions largely rely on additional seals or complex sheet metal bending and welding processes. Sealing strips are prone to aging and failure under long-term exposure to sun and rain, requiring regular replacement; welded structures increase manufacturing costs and process difficulty, and are not conducive to on-site disassembly and maintenance. In addition, existing technologies also include solutions that directly create water guide channels on the profiles, such as setting open guide channels on the outer wall of the profile to guide water flow. However, existing corner connectors are usually completely embedded in the inner cavity of the profile frame, while simultaneously blocking the entire end face of the profile. This results in the guide channels of each profile being completely cut off at the joints, failing to form a continuous drainage path. Water can easily seep into the inner cavity of the cabinet along the channel walls, making it impossible to fundamentally achieve a high level of waterproofing and dustproofing.

[0004] In terms of structural strength, existing cabinet frames are mostly constructed by splicing single-section profiles using corner connectors or welding. Common corner connection methods include: inserting three-way corner connectors into the profile cavity and securing them with screws, or cutting the ends of the profiles into 45-degree angled surfaces and then welding them together. However, regardless of the corner connection method used, the overall structural strength of the cabinet is ultimately limited by the mechanical properties of the profile's cross-section. Single-section profiles have limited bending and torsional stiffness. When bearing heavy equipment or encountering strong outdoor winds or vibrations, the profiles themselves are prone to bending or torsional deformation, leading to instability of the overall cabinet structure. To compensate for the insufficient stiffness of the profiles themselves, existing technologies typically require the addition of reinforcing beams, stiffeners, and other components outside the frame. This not only increases the number of parts and assembly steps but also increases the cabinet's weight and manufacturing costs. Furthermore, the additional reinforcing components encroach on usable space inside the cabinet, hindering equipment layout and heat dissipation.

[0005] Regarding cabinet door and panel installation, existing technologies employ profile solutions with interlocking grooves, allowing cabinet doors or side panels to be installed in an embedded manner, achieving a smooth and aesthetically pleasing exterior surface. For example, some solutions incorporate L-shaped interlocking grooves between the working surfaces of the profile, allowing the door panel to be inserted and fitted along its thickness. However, these grooves typically only accommodate the edges of the panels, lacking an effective pathway for water seeping into the gap between the panel and the groove. Moisture easily accumulates at the bottom of the groove, potentially leading to profile corrosion over time, and even seeping into the cabinet interior and damaging equipment. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of existing technologies in terms of waterproofing, dustproofing, structural strength, and reasonable installation. This invention provides a waterproof and dustproof cabinet frame with a reasonable structure, high protection level, and high structural strength to meet the application needs of both indoor and outdoor use.

[0007] The technical solution of this invention includes multiple horizontal beams, multiple vertical beams, multiple columns, and plates. The horizontal beams, vertical beams, and columns are perpendicularly connected to each other and form a frame structure. The horizontal beams, vertical beams, and columns are all made of the same profile, which includes an inner frame and an outer frame. The inner frame has at least four vertices, including an inner vertex and an outer vertex arranged diagonally opposite each other, as well as a first side vertex and a second side vertex arranged diagonally opposite each other. The first side vertex and the second side vertex extend outward to form a blocking part. The outer frame extends outward from the outer vertex and forms a frame structure. A guide groove is formed between the outer frame and each blocking part. Except for the slot for the plate to be inserted, the peripheral wall of the guide groove is constructed as a continuous closed structure to isolate the internal space of the guide groove from the internal space of the inner frame. Corner connection structures are provided at the connection nodes of the horizontal beams, vertical beams, and columns. The edge of the plate has an outer edge perpendicular to the surface of the plate body. The outer edge is inserted into the guide groove and fitted to the outer frame for installation.

[0008] By adopting the above technical solution, a frame structure in which beams, longitudinal beams, and columns are all made of the same profile reduces the variety of profile specifications, lowers mold development and manufacturing costs, and improves the standardization and versatility of the cabinet frame. The profile has a double-layer frame structure with an inner and outer frame, giving each profile high bending and torsional strength, thereby enhancing the overall load-bearing capacity and structural stability of the cabinet frame. The guide groove formed on the profile, except for the slot for panel installation, has a continuous closed structure on its perimeter, effectively isolating the internal space of the guide groove from the internal space of the inner frame, preventing external moisture and dust from seeping into the cabinet cavity through the guide groove, and improving the cabinet frame's waterproof and dustproof rating. The outer edge of the panel is inserted into the guide groove and fitted to the outer frame, achieving a flush, embedded installation of the panel, resulting in a clean and aesthetically pleasing appearance without obvious protrusions or depressions on the outer surface of the cabinet. Simultaneously, the fitted installation further reduces installation gaps, minimizing the accumulation of external dust and moisture on the cabinet surface.

[0009] In one possible design, the corner connection structure includes a connector and a sealing cap; the axial ends of the profile are configured as end faces on the same plane and perpendicular to the axial direction of the profile, and the profile end faces of the crossbeam, longitudinal beam, and column are spliced ​​to form a mutually perpendicular layout; the port formed by the end face of the outer frame of the profile is covered and installed by the sealing cap; the connector includes a central column with three vertical surfaces and inserts protruding from each vertical surface, each insert being inserted into the inner frame of the corresponding profile, and each vertical surface of the central column covering the port formed by the end face of the inner frame of the corresponding profile; there is a gap between the central column and the sealing cap to form a drainage channel communicating with the guide groove, and the drainage channel is also connected to the outside; the port formed by the end face of the profile blocking part is covered by welding.

[0010] By inserting the insert post into the inner frame of the corresponding profile, the connector, beam, and column can be quickly positioned and welded at the right-angle joint, improving assembly accuracy and efficiency. Simultaneously, the fit between the insert post and the inner wall of the inner frame effectively transfers loads, ensuring the stability of the joint connection. The three vertical surfaces of the central column cover the ports formed by the end faces of the corresponding profile's inner frame, sealing the end openings of the inner frame and preventing moisture and dust from entering the inner cavity. The end faces of the profile's outer frame are covered by sealing caps, sealing the end openings of the outer frame and preventing external moisture and dust from entering the interior of the outer frame. The connector and sealing cap... A gap is maintained between the covers, forming a drainage channel connected to the profile guide groove, allowing water to flow smoothly through the guide grooves of each profile and achieving water flow conduction at the joint. The end face of the profile blocking part is covered by welding, further strengthening the sealing of the profile end and eliminating the risk of water seeping in from the end of the blocking part. This corner connection solution solves the problem of guide groove interruption and water accumulation at the joint caused by the complete sealing of the end face of traditional corner connectors. The guide grooves are interconnected through drainage channels to form a whole-machine drainage network, which is particularly suitable for outdoor use environments. While ensuring connection strength, it also achieves water flow conduction between the guide grooves of each profile.

[0011] In one possible design, the corner connection structure includes a positioning element; the ends of the crossbeam, longitudinal beam, and column profiles that are connected are all inclined at 45 degrees, and the three inclined surfaces are attached and welded together; the positioning element is installed in the inner frame of one of the profiles, and the top surface of the positioning element is attached to the inner cavity wall of the inner frame of the other two profiles to form a positioning.

[0012] The corner connection structure employs a 45-degree inclined surface bonding and welding method, ensuring a tight surface contact between the crossbeam, longitudinal beam, and column at the corner joint. The weld is continuous and uniform, providing high connection rigidity and deformation resistance, effectively withstanding external loads from all directions. The top surface of the positioning component fits against the inner wall of the inner frame of the other two profiles, allowing for pre-positioning of the three profiles before welding, improving assembly accuracy and welding efficiency, and reducing the risk of welding deformation. This corner connection solution has a simple structure, fewer parts, and low manufacturing cost, making it particularly suitable for indoor use.

[0013] In one possible design, the profile has a mirror-symmetric shape about a central line of symmetry, which is a straight line connecting the inner and outer vertices.

[0014] The above design, with its mirror-symmetric structure, allows the profiles to distribute loads evenly when under stress, avoiding stress concentration caused by asymmetrical structures and further improving the structural stability of the profiles and cabinet frames. The symmetrical structure also allows the same profile to be used for the uprights, beams, and longitudinal beams of the cabinet frame, reducing the variety of profile specifications and improving the versatility and convenience of production, inventory, and assembly.

[0015] In one possible design, the cross-section of the outer frame is rectangular, including two first outer frame sides and two second outer frame sides; the two first outer frame sides extend outward from the outer vertex, and the two second outer frame sides are respectively connected to the endpoints of the corresponding first outer frame sides, and the endpoints of the two second outer frame sides are connected and closed.

[0016] With the above design, the outer frame forms a relatively complete closed-loop structure. This closed frame forms a second reinforcing structure on the outermost side of the profile, which together with the inner frame forms an inner and outer double-layer frame, improving the bending and torsional stiffness of the profile and thus enhancing the overall load-bearing capacity of the cabinet frame. At the same time, the outer frame provides a stable outer boundary for the guide channel, ensuring the cross-sectional shape and structural integrity of the guide channel, and ensuring the stable performance of its water guiding and installation functions.

[0017] In one possible design, the first outer frame edge and the second outer frame edge are perpendicular to each other, and the connection point between them is formed into a rounded or right-angled shape; the two second outer frame edges are perpendicular to each other, and the connection point between them is formed into a rounded or right-angled shape.

[0018] The above design reduces stress concentration at the connection points, preventing the profiles from breaking or deforming under stress or during long-term use, thus extending their service life. Right angles ensure the regularity of the rectangular structure of the outer frame and create smooth corners when the profiles are spliced, enhancing the aesthetics of the cabinet.

[0019] In one possible design, connecting slopes are formed between the outer vertices and the respective endpoints of the first outer frame edge. The connecting slopes are set along the direction of the central symmetry line and the two connecting slopes are close to each other.

[0020] With the above design, the connecting ramp plays a role in transitioning and optimizing the cross-sectional shape of the guide groove, making the groove wall of the guide groove smoother and providing a smooth guide for the insertion and removal of the plate, and can buffer the impact force during the installation of the plate; on the other hand, the two close connecting ramps also enhance the local structural strength of the outer vertex area, and improve the ability of the connection part to withstand external impact and compression.

[0021] In one possible design, the inner frame includes two mounting sides and two groove bottom surfaces located at the bottom of the guide groove; the inner vertex is located at the junction of the two mounting sides, the outer vertex is located at the intersection of the two groove bottom surfaces, and the first side vertex and the second side vertex are respectively located at the intersection of the corresponding mounting side and the groove bottom surface.

[0022] By adopting the above design, the structural definition of the inner frame is clearly defined by clarifying the positional relationship between each vertex of the inner frame and the mounting side and the bottom of the groove, resulting in a more regular structure that facilitates the installation and positioning of internal components. The mounting side provides a stable support surface for component installation, and the bottom of the groove serves as the bottom of the guide groove, ensuring the water-holding and guiding space of the guide groove. At the same time, the clear positional relationship of each vertex ensures the connection accuracy of the blocking part and the outer frame, making the overall structure of the profile more stable and the cooperation of each component smoother.

[0023] In one possible design, the blocking part includes an extension surface and a groove sidewall; the extension surface is formed by coplanar extension of the mounting side surface, and the groove sidewall is formed by bending the extension surface inward.

[0024] With the above design, the outer extension surface of the blocking part extends coplanarly with the mounting side surface, so that the blocking part and the mounting side surface of the inner frame part maintain a continuous planar relationship, ensuring the flatness of the profile surface, facilitating the smooth sliding and installation of internal equipment along the mounting side surface, avoiding assembly interference caused by structural abrupt changes. At the same time, the wide mounting surface formed by the outer extension surface and the mounting side surface helps to enhance the structural strength of the profile. The groove sidewall is formed by bending inward from the outer extension surface, which can quickly enclose and form the sidewall of the guide groove, simplifying the processing technology. At the same time, the inwardly bent groove sidewall can limit the installation of the plate, prevent the plate from shifting, ensure the stability of the plate installation, and further improve the closed structure of the guide groove in conjunction with the outer frame part.

[0025] In one possible design, the groove sidewall is formed by bending inward from the outer extension surface, so that the groove sidewall and the outer extension surface form an angle of less than 30 degrees, and the connection area between the groove sidewall and the outer extension surface forms a U-shaped bent surface.

[0026] With the above design, the large-angle bending structure creates a stress-resistant arc-shaped transition area between the groove sidewall and the outer surface, dispersing the stress at the bending point and preventing cracks and material fatigue. At the same time, the U-shaped structure can provide some support for the plate and limit the excessive embedding of the plate.

[0027] In one possible design, there is a height difference between the bent surface and the second outer frame edge on the same side in the direction of extension of the mounting side. The height difference is used to accommodate the thickness of the mounting plate so that the plate is flush with the second outer frame edge after installation.

[0028] The above design allows the height difference to accommodate the thickness of the mounting panels, ensuring that the panels are flush with the edge of the second outer frame after being embedded. This achieves a flush, embedded installation of cabinet doors or side panels, resulting in a clean and aesthetically pleasing appearance without any noticeable protrusions or depressions on the exterior of the cabinet. Simultaneously, the flat outer surface helps reduce the accumulation of external dust and moisture on the cabinet surface, further enhancing the protective performance of the cabinet frame. Furthermore, the limiting structure formed by the height difference further positions the panels, preventing loosening or displacement after installation and improving installation stability.

[0029] In one possible design, the guide channel is formed by the sequential connection of the channel sidewall, the channel bottom, the connecting slope, and the first outer frame edge to form a semi-enclosed water guiding channel, with the channel opening located between the channel sidewall and the first outer frame edge.

[0030] The above design forms a semi-enclosed water channel. The groove between the side wall of the channel and the edge of the first outer frame provides space for panel installation. This structure ensures smooth panel installation while forming a reliable water-guiding path through the continuous enclosed channel walls, isolating external water droplets and dust from the inner cavity of the frame, maximizing waterproof and dustproof effects. The channel extends along the axial direction of the profile. When water seeps into the guide channel from the installation gaps of the cabinet door or panel, the closed water-guiding channel allows the seeping water droplets to flow smoothly along the channel. The water-guiding channels in all directions are interconnected, gradually draining the water out of the cabinet frame, preventing water droplets from accumulating in the guide channel and causing profile corrosion or seeping into the inner frame. At the same time, it ensures the structural stability of the guide channel, ensuring its long-term effective water guiding and installation functions.

[0031] In one possible design, the outer edge of the plate is inserted into the guide groove and then fitted to the edge of the first outer frame for installation, until the outer edge abuts against the connecting slope to form a positioning; the outer surface of the plate is basically flush with the outer surface of the second outer frame.

[0032] The above design achieves precise positioning and stable installation of the panels within the guide groove, ultimately ensuring that the outer surface of the panels is flush with the outer surface of the second outer frame, thus guaranteeing the overall flatness and aesthetics of the cabinet frame and avoiding dust and water accumulation problems caused by protruding or recessed panels. At the same time, this fitting method enables a reliable structural connection between the panels and the profiles, improving the overall sealing and protection level of the cabinet frame.

[0033] In one possible design, the guide grooves of the crossbeams, longitudinal beams, and columns are interconnected through drainage channels to form an interconnected drainage network; water that seeps into any profile guide groove can be gradually guided downward through the drainage network and eventually discharged from the bottom of the cabinet to the outside of the cabinet.

[0034] With the above design, when the cabinet is in an outdoor environment or encounters water, if water seeps into the guide groove of any profile through the installation gaps of the cabinet door or panel, it can be gradually guided downwards through the drainage network under the action of gravity, and finally discharged from the bottom of the cabinet to the outside of the cabinet. This structure effectively avoids the long-term accumulation of water droplets in the guide groove, reduces the risk of profile corrosion caused by water accumulation, and also eliminates the possibility of water droplets further seeping into the inner cavity of the inner frame and damaging the internal equipment. In addition, since the drainage network is composed of the guide groove of each profile and the corner drainage channel, there is no need to add additional water pipes or drainage accessories. The structure is compact and reliable, ensuring the continuous and effective waterproof and dustproof performance of the cabinet during long-term use. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the external structure of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the structure of the plate components before assembly according to Embodiment 1 of the present invention; Figure 3 This is Embodiment 1 of the present invention. Figure 2 A magnified view of a section at point A in the middle; Figure 4 This is a partial structural diagram of the connector before assembly according to Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the profile structure according to Embodiment 1 of the present invention; Figure 6 This is a schematic diagram of the profile in the water accumulation state according to Embodiment 1 of the present invention; Figure 7 This is a structural schematic diagram of the profile assembly state according to Embodiment 1 of the present invention; Figure 8 This is a schematic diagram of the external structure of Embodiment 2 of the present invention; Figure 9 This is a schematic diagram of the structure of the second embodiment of the present invention in the unassembled state of the plate; Figure 10 This is an exploded view of the corner connection structure in Embodiment 2 of the present invention; Among them, 1. Profiles; 11. Inner frame; 111. Inner vertex; 112. Outer vertex; 113. First side vertex; 114. Second side vertex; 115. Mounting side; 116. Groove bottom; 12. Outer frame section; 121. First outer frame edge; 122. Second outer frame edge; 123. Connecting bevel; 13. Blocking part; 131. Extension surface; 132. Groove sidewall; 133. Bending surface; 14. Guide groove; 141. Groove opening; 2. Crossbeam; 3. Longitudinal beams; 4. Columns; 5. Plate; 51. Outer edge; 6. Corner connection structure; 61. Sealing cover; 62. Connector; 621. Central column; 622. Insert column; 63. Drainage channel; 71. Positioning components. Detailed Implementation Example 1

[0036] like Figures 1 to 7 As shown, this embodiment provides a waterproof and dustproof cabinet frame that is suitable for outdoor environments and has a high level of protection.

[0037] The cabinet frame in this embodiment includes multiple horizontal beams 2, multiple vertical beams 3, multiple uprights 4, and panels 5. The horizontal beams 2 are horizontally arranged along the width of the cabinet frame, the vertical beams 3 are horizontally arranged along the depth of the cabinet frame, and the uprights 4 are vertically arranged along the height of the cabinet frame. Typically, there are four horizontal beams 2, four vertical beams 3, and four uprights 4. The horizontal beams 2, vertical beams 3, and uprights 4 are perpendicularly connected to each other, forming a cuboid or cubic frame structure. The panels 5 include cabinet doors, side panels, top panels, and bottom panels, which are installed on various surfaces of the frame to enclose or semi-enclose the interior space of the cabinet.

[0038] In this embodiment, the crossbeam 2, longitudinal beam 3, and column 4 are all made of profile 1 with the same cross-sectional shape. Profile 1 is integrally formed by aluminum extrusion, or it can be made from other metals or alloys through cold bending or drawing processes. The cross-sectional shape of profile 1 remains constant along its length.

[0039] Profile 1 includes an inner frame portion 11 and an outer frame portion 12. The inner frame portion 11 and the outer frame portion 12 are connected to each other and together form the overall load-bearing frame of profile 1.

[0040] like Figure 4-7 As shown, the cross-section of the inner frame 11 forms four vertices: an inner vertex 111 and an outer vertex 112 diagonally opposite each other, and a first side vertex 113 and a second side vertex 114 diagonally opposite each other. Specifically, the inner frame 11 includes two mounting sides 115 and two groove bottom surfaces 116. The inner vertex 111 is located at the intersection of the two mounting sides 115. The modular holes on the two mounting sides 115 are perpendicular to each other and arranged regularly, providing a stable mounting support surface for electrical components and connectors 62 inside the cabinet, facilitating the positioning and fixing of components. The outer vertex 112 is located at the intersection of the two groove bottom surfaces 116. The two groove bottom surfaces 116 are also perpendicular to each other, and the groove bottom surfaces 116 serve as the bottom of the subsequent guide groove 14, providing a stable water-receiving and guiding space for the guide groove 14. The first side vertex 113 and the second side vertex 114 are located at the intersection of the corresponding mounting sides 115 and groove bottom surfaces 116.

[0041] The cross section of profile 1 is mirror-symmetric about the line connecting the inner vertex 111 and the outer vertex 112 (i.e., the central symmetry line L). This symmetrical structure allows profile 1 of the same specification to be used as the left-side column 4 or the right-side column 4 of the cabinet frame, as well as as the upper and lower crossbeams 2 and longitudinal beams 3. This reduces the variety of profile specifications, lowers mold and inventory costs, and improves the versatility and convenience of production and assembly.

[0042] The outer frame 12 extends outward from the outer vertex 112 to form a closed frame structure with a rectangular or similar rectangular cross-section, specifically including two first outer frame edges 121 and two second outer frame edges 122. The two first outer frame edges 121 extend outward from the outer vertex 112 and are mirror-symmetrical along a central line of symmetry. The two second outer frame edges 122 are connected to the endpoints of the corresponding first outer frame edges 121, and the endpoints of the two second outer frame edges 122 are interconnected and closed, thus forming a complete frame. This frame forms a second reinforcing structure on the outermost side of the profile 1, together with the inner frame 11, forming an inner and outer double-layer frame, significantly improving the bending and torsional strength of the profile 1.

[0043] The first outer frame edge 121 and the second outer frame edge 122 are perpendicular to each other, and the connection point between them forms a rounded or right-angled shape, as shown in the figure. The two second outer frame edges 122 are perpendicular to each other, and the connection point between them forms a right-angled or rounded shape, as shown in the figure. If a rounded shape is chosen, stress concentration at the connection point can be avoided, preventing the profile 1 from breaking or deforming under stress or during long-term use, thus extending the service life of the profile 1. If a right-angled shape is chosen, it ensures the regularity of the rectangular structure of the outer frame 12, and also allows for a smooth corner when the profile 1 is spliced, improving the aesthetic appearance of the cabinet frame, while facilitating the fitting and installation of the cabinet doors and panel 5.

[0044] A connecting ramp 123 is formed between the outer vertex 112 and the endpoints of their respective first outer frame edges 121. The connecting ramps 123 are arranged along the direction of the central symmetry line, and the two connecting ramps 123 approach each other to form a symmetrical inclined structure. In actual assembly, the outer edge of the plate 5 enters the guide groove 14 along the first outer frame edge 121 until it abuts against the connecting ramp 123 to form a positioning. The connecting ramp 123 serves to transition and optimize the cross-sectional shape of the guide groove 14, making the groove wall of the guide groove 14 smoother, providing a smooth limiting effect for the insertion and removal of the plate 5, and buffering the impact force during the installation of the plate 5; on the other hand, the two approaching connecting ramps 123 also enhance the local structural strength of the outer vertex 112 area, improving the ability of the connection part to withstand external impact and compression.

[0045] The first side vertex 113 and the second side vertex 114 extend outward to form a blocking part 13, and the two blocking parts 13 are mirror symmetrical along the central symmetry line. Each blocking part 13 includes an outer extension surface 131 and a groove sidewall 132. The outer extension surface 131 is formed by coplanar extension of the mounting side surface 115, that is, the outer extension surface 131 and the corresponding mounting side surface 115 are on the same plane, which can ensure the flatness of the inner surface of the profile 1 and avoid the outer extension surface 131 protruding or recessing and affecting the installation of internal equipment and the assembly of the plate 5. The groove sidewall 132 is formed by bending the outer extension surface 131 inward in the opposite direction, specifically bending the outer extension surface 131 by more than 330 degrees, so that the groove sidewall 132 and the outer extension surface 131 form an angle β of less than 30 degrees, so that the connection area between the groove sidewall 132 and the outer extension surface 131 forms a U-shaped bent surface 133. The angle β formed by the sidewall 132 and the extension surface 131 is between 5 and 30 degrees due to the bending.

[0046] To achieve a flush, embedded installation of panel 5, a height difference H exists between the bent surface 133 and the second outer frame edge 122 on the same side, extending along the mounting side 115. This height difference H is sufficient to accommodate the thickness of the installed panel 5. When the outer edge of panel 5, such as a cabinet door or side panel, is inserted into the guide groove 14 and adheres to the groove side wall 132, the outer surface of panel 5 is essentially flush with the outer surface of the second outer frame edge 122, thus achieving the embedded installation of panel 5. This results in no obvious protrusions or depressions on the exterior of the entire cabinet frame, creating a neat and aesthetically pleasing appearance. It also helps reduce the accumulation of external dust and moisture on the cabinet surface.

[0047] Guide grooves 14 are formed between the outer frame portion 12 and each of the blocking portions 13. It should be noted that the guide grooves 14 are not completely closed annular cavities, but rather semi-closed structures formed by the sequential connection of the groove sidewalls 132, the groove bottom surface 116, the connecting slope 123, and the first outer frame edge 121. A gap is maintained between the end of the groove sidewall 132 and the first outer frame edge 121, which serves as the slot 141 for the outer edge of the plate 5 to be fitted. Although this slot 141 exists to meet installation requirements, the peripheral walls of the guide grooves 14, excluding the slot 141 (i.e., the groove sidewalls 132, the groove bottom surface 116, the connecting slope 123, and the first outer frame edge 121), constitute a continuous, closed barrier without openings, completely isolating the internal space of the guide grooves 14 from the internal space of the inner frame portion 11. Therefore, external moisture or dust, after entering the guide groove 14 through the slot 141, cannot overcome the continuous barrier and seep into the inner cavity of the inner frame 11, thus ensuring the dryness and cleanliness of the cabinet interior.

[0048] In this embodiment, the connection nodes of the crossbeam 2, longitudinal beam 3, and column 4 adopt a corner connection structure 6 suitable for outdoor environments, and also suitable for indoor environments.

[0049] First, the axial ends of profile 1 are designed to be on the same plane. That is, the ends of each profile 1 are precisely cut so that their end faces are perpendicular to the axis of profile 1 and form a flat plane. When the crossbeam 2, longitudinal beam 3, and column 4 are joined at the node, the end faces of the three profiles 1 form a mutually perpendicular spatial arrangement, collectively enclosing a right-angled spatial area located inside the node. The port formed by the end face of the outer frame portion 12 of profile 1 (i.e., the opening at the end of the outer frame portion 12) is covered and installed by a sealing cap 61. The shape of the sealing cap 61 matches the contour of the port of the outer frame portion 12 and is fixed to the port by snap-fitting, adhesive, or other methods, completely sealing the port.

[0050] The corner connection structure 6 includes a connector 62 and a sealing cap 61. The connector 62 includes a central post 621 with three mutually perpendicular planes and insert posts 622 protruding from each vertical plane. The three vertical planes of the central post 621 are orthogonal to each other, corresponding to the end face directions of the profiles 1 of the crossbeam 2, longitudinal beam 3, and column 4 at the node, respectively. The cross-sectional shape of each insert post 622 is adapted to the cross-sectional shape of the inner cavity of the inner frame portion 11 of the profile 1, so that the insert post 622 can be inserted into the inner frame portion 11 of the corresponding profile 1, realizing the insertion and positioning of the connector 62 and the profile 1. During assembly, the three insert posts 622 of the connector 62 are inserted into the inner frame portions 11 of the crossbeam 2, longitudinal beam 3, and column 4, respectively. Since the axial ends of profile 1 are set to be on the same plane, the end faces of profile 1 of the crossbeam 2, longitudinal beam 3, and column 4 form a mutually perpendicular layout. The three vertical surfaces of the central column 621 are respectively attached to the end face of the corresponding profile 1 and cover the port formed by the end face of the inner frame 11 of profile 1, thus closing the port of the inner frame 11. After the insert post 622 is inserted, it can be fastened by screws inserted into the side wall of profile 1 and the corresponding holes on the insert post 622, or by welding between the insert post 622 and the inner wall of the inner frame 11. Both fixing methods can be flexibly selected according to actual usage requirements. The screw fastening method is convenient for on-site disassembly and maintenance, while the welding fixing method can provide higher connection strength and more reliable vibration resistance.

[0051] The central post 621 and the sealing cover 61 are not tightly fitted together, but rather separated by a certain gap. This gap forms a drainage channel 63 that communicates with the guide groove 14 of the profile 1. Specifically, the vertical surface of the central post 621 only covers the port area of ​​the inner frame portion 11, while the sealing cover 61 covers the port area of ​​the outer frame portion 12. The two are misaligned in the inward and outward directions of the profile 1 cross-section, thus naturally forming a gap between them that allows water to flow through. One end of the drainage channel 63 communicates with the guide groove 14 of the profile 1, and the other end communicates with the external space. Moreover, the drainage channel 63 at each corner is connected to the observable external space, so that each guide groove 14 can communicate with each other through the external space, thereby forming a drainage network.

[0052] Furthermore, the port formed by the end face of the blocking portion 13 of the profile 1 (i.e., the opening at the end of the blocking portion 13) is covered and sealed by full welding. Welding can fuse and seal the inner and outer wall surfaces at the port of the blocking portion 13, preventing moisture from seeping into the interior of the profile 1 or the inner cavity of the inner frame portion 11.

[0053] Through the aforementioned corner connection structure 6, the guide grooves 14 of the crossbeam 2, longitudinal beam 3, and upright 4 are interconnected via drainage channels 63, forming an interconnected drainage network. When the cabinet is outdoors or exposed to water, moisture may seep into the guide grooves 14 of the top crossbeam 2 or longitudinal beam 3 through the installation gaps between the cabinet door or side panel and the frame. The seeping moisture is confined within the semi-enclosed channels of the guide grooves 14 and flows along the channels under the influence of gravity or when it accumulates excessively. When the water reaches the corner node, it flows through the drainage channel 63 between the connector 62 and the sealing cover 61, from the guide grooves 14 of the crossbeam 2 or longitudinal beam 3 into the guide grooves 14 of the upright 4. The water in the guide grooves 14 of the upright 4 continues to flow downwards, eventually being discharged to the outside of the cabinet from the drain outlet at the bottom of the cabinet or directly through the bottom of the upright 4. This drainage network effectively prevents water droplets from accumulating in the guide channel 14 for a long time, reduces the risk of corrosion of the profile 1 caused by water accumulation, and also eliminates the possibility of water droplets seeping into the inner cavity of the inner frame 11 and damaging the internal equipment.

[0054] The edge of panel 5 is provided with an outer edge 51 perpendicular to the main surface of panel 5. The outer edge 51 can be formed by bending the edge of panel 5, or it can be a frame strip independently installed on the edge of panel 5. During installation, the outer edge 51 of panel 5 is aligned with the guide groove 141 of profile 1 and pushed in a direction perpendicular to the surface of the cabinet. The outer edge 51 slides into the guide groove 14 against the first outer frame edge 121 until the end of the outer edge 51 abuts against the connecting inclined surface 123 to form a positioning. At this time, the bent surface 133 limits the inner surface of panel 5 to prevent panel 5 from being over-embedded. At the same time, since there is a height difference between the bent surface 133 and the second outer frame edge 122, this height difference just accommodates the thickness of the outer edge 51 of panel 5, so that the outer surface of panel 5 is basically flush with the outer surface of the second outer frame edge 122 after installation. Thus, panel 5 and frame 1 are seamlessly embedded, resulting in a uniform cabinet exterior surface without protrusions or depressions, an aesthetically pleasing appearance, and resistance to dust and water accumulation. Furthermore, if panel 5 is a door panel that needs to be opened and closed, one of its outer edges 51 is hinged to the corresponding first outer frame edge 121 via a hinge. Example 2

[0055] like Figures 8 to 10 As shown, this embodiment provides a waterproof and dustproof cabinet frame, the main difference from Embodiment 1 being the corner connection structure 6. The corner connection scheme of this embodiment has a simpler structure and is more suitable for indoor use.

[0056] In this embodiment, the ends of the crossbeam 2, longitudinal beam 3, and column 4 that connect to each other are all cut at a 45-degree angle. That is, the end face of each profile 1 forms a 45-degree angle with its axis. When the three profiles 1 are joined at the corner joint, their 45-degree angled surfaces fit together to form a complete right-angled joint structure. The angled surfaces of the three profiles are fixedly connected by welding, and the weld extends along the boundary line of the angled surfaces to form a continuous and firm connection.

[0057] To achieve precise pre-positioning of the three profiles 1 before welding, a cuboid positioning element 71 is pre-installed in the inner frame portion 11 of one of the profiles 1 (typically a column 4). The positioning element 71 can be made of metal, and its external dimensions are adapted to the internal cavity dimensions of the inner frame portion 11. After installation, the top surface of the positioning element 71 (i.e., the plane facing the inside of the node) fits against the inner cavity walls of the inner frame portions 11 of the other two profiles 1 (crossbeam 2 and longitudinal beam 3), thereby providing positioning references for the three profiles 1 in three directions. Through this positioning element 71, the three profiles 1 can maintain accurate relative positions before welding, effectively improving assembly accuracy and welding efficiency, and reducing welding deformation.

[0058] In this embodiment, since the end of profile 1 is inclined at 45 degrees and most of the end face opening is closed by welding, there is no need to set up a separate sealing cap 61 and connector 62. Whether the guide grooves 14 of each profile 1 are connected at the corner nodes can be selected according to actual needs. If drainage is required, a drainage gap can be reserved or a drainage hole can be opened during welding.

[0059] The remaining structures of this embodiment, including the cross-sectional shape of the profile 1, the composition of the guide groove 14, and the installation and fitting method of the plate 5, are the same as those in Embodiment 1, and will not be described again here.

[0060] This cabinet frame can be widely used in power, communications, industrial automation, data centers, and other fields. Due to the waterproof and dustproof function of the guide groove 14 in the profile 1 and the high strength of the double-layer frame, combined with the corresponding corner connection structure 6, the entire cabinet frame can achieve a high protection level (such as IP56) without the need for additional waterproof strips or water-guiding frames, meeting both indoor and outdoor usage requirements. The outdoor solution achieves all-around drainage through a drainage network, while the indoor solution reduces costs by simplifying the connection structure. Users can flexibly choose according to their actual usage environment.

Claims

1. A waterproof and dustproof cabinet frame, comprising multiple horizontal beams (2), multiple vertical beams (3), multiple uprights (4), and panels (5), wherein the horizontal beams (2), vertical beams (3), and uprights (4) are perpendicularly connected to each other and assembled into a frame structure; characterized in that: The crossbeam (2), longitudinal beam (3), and column (4) are all made of the same profile (1). The profile (1) includes an inner frame (11) and an outer frame (12). The inner frame (11) forms at least four vertices, including an inner vertex (111) and an outer vertex (112) arranged diagonally opposite each other, and a first side vertex (113) and a second side vertex (114) arranged diagonally opposite each other. The first side vertex (113) and the second side vertex (114) are located at the same location. 4) The outer frame (12) extends outward from the outer vertex (112) to form a blocking part (13); the outer frame (12) extends outward from the outer vertex (112) and forms a frame structure; the outer frame (12) and each of the blocking parts (13) form a guide groove (14), and the guide groove (14) except for the slot (141) for the plate (5) to be inserted is constructed as a continuous closed structure to isolate the internal space of the guide groove (14) from the internal space of the inner frame (11); A corner connection structure (6) is provided at the connection node of the crossbeam (2), longitudinal beam (3), and column (4); The edge of the plate (5) is provided with an outer edge (51) perpendicular to the surface of the main body of the plate (5). The outer edge (51) is inserted into the guide groove (14) and fitted to the outer frame (12) for installation.

2. The waterproof and dustproof cabinet frame according to claim 1, characterized in that: The corner connection structure (6) includes a connector (62) and a sealing cap (61); the axial end of the profile (1) is set as an end face on the same plane and the end face is perpendicular to the axial direction of the profile (1); when the end faces of the profiles (1) of the crossbeam (2), longitudinal beam (3), and column (4) are spliced, they form a mutually perpendicular layout; the port formed by the end face of the outer frame (12) of the profile (1) is covered and installed by the sealing cap (61); the connector (62) includes a central column (621) with three vertical surfaces and a connector from each vertical surface. A straight protruding insert (622) is inserted into the inner frame (11) of the corresponding profile (1). Each vertical surface of the central post (621) covers the port formed by the end face of the inner frame (11) of the corresponding profile (1). There is a gap between the central post (621) and the sealing cover (61) to form a drainage channel (63) communicating with the guide groove (14). The drainage channel (63) is also connected to the outside. The port formed by the end face of the blocking part (13) of the profile (1) is covered by welding.

3. The waterproof and dustproof cabinet frame according to claim 1, characterized in that: The corner connection structure (6) includes a positioning component (71); the ends of the crossbeam (2), longitudinal beam (3), and column (4) that are connected to each other are all inclined at 45 degrees, and the inclined surfaces of the three are attached together and welded; the positioning component (71) is installed in the inner frame (11) of one of the profiles (1), and the top surface of the positioning component (71) is attached to the inner cavity wall of the inner frame (11) of the other two profiles (1) to form a positioning.

4. The waterproof and dustproof cabinet frame according to claim 1, characterized in that, The profile (1) has a mirror-symmetric structure about a central symmetry line, which is a straight line connecting the inner vertex (111) and the outer vertex (112).

5. The waterproof and dustproof cabinet frame according to claim 4, characterized in that, The cross-section of the outer frame (12) is rectangular, including two first outer frame sides (121) and two second outer frame sides (122); the two first outer frame sides (121) extend outward from the outer vertex (112), and the two second outer frame sides (122) are respectively connected to the endpoints of the first outer frame sides (121) on the corresponding sides, and the endpoints of the two second outer frame sides (122) are connected and closed.

6. The waterproof and dustproof cabinet frame according to claim 5, characterized in that, The first outer frame edge (121) and the second outer frame edge (122) are perpendicular to each other, and the connection point between them is formed into a rounded or right-angled shape; the two second outer frame edges (122) are perpendicular to each other, and the connection point between them is formed into a rounded or right-angled shape.

7. The waterproof and dustproof cabinet frame according to claim 5, characterized in that, A connecting slope (123) is formed between the outer vertex (112) and the endpoint of each of the first outer frame edges (121). The connecting slope (123) is set along the direction of the central symmetry line and the two connecting slopes (123) are close to each other.

8. The waterproof and dustproof cabinet frame according to claim 7, characterized in that, The inner frame (11) includes two mounting sides (115) and two bottom surfaces (116) located at the bottom of the guide groove (14); the inner vertex (111) is located at the junction of the two mounting sides (115), the outer vertex (112) is located at the intersection of the two bottom surfaces (116), and the first side vertex (113) and the second side vertex (114) are respectively located at the intersection of the mounting side (115) and the bottom surface (116) on the corresponding side.

9. The waterproof and dustproof cabinet frame according to claim 8, characterized in that, The blocking part (13) includes an extension surface (131) and a groove sidewall (132); the extension surface (131) is coplanarly extended from the mounting side surface (115), and the groove sidewall (132) is formed by bending the extension surface (131) inward.

10. The waterproof and dustproof cabinet frame according to claim 9, characterized in that, The groove sidewall (132) is formed by bending the outer extension surface (131) inward in the opposite direction, so that the groove sidewall (132) and the outer extension surface (131) form an angle of less than 30 degrees, and the connection area between the groove sidewall (132) and the outer extension surface (131) is formed as a U-shaped bent surface (133).

11. The waterproof and dustproof cabinet frame according to claim 9, characterized in that, There is a height difference between the bent surface (133) and the second outer frame edge (122) on the same side in the direction extending along the mounting side (115). The height difference is used to accommodate the thickness of the mounting plate (5) so that the plate (5) is flush with the second outer frame edge (122) after installation.

12. The waterproof and dustproof cabinet frame according to claim 9, characterized in that, The guide groove (14) is formed by the groove sidewall (132), the groove bottom surface (116), the connecting inclined surface (123) and the first outer frame edge (121) connected in sequence to form a semi-closed water guiding channel. The groove opening (141) of the guide groove (14) is located between the groove sidewall (132) and the first outer frame edge (121).

13. The waterproof and dustproof cabinet frame according to claim 7, characterized in that, After the outer edge (51) of the plate (5) is inserted into the guide groove (14), it is attached to the first outer frame edge (121) for installation. The outer edge (51) is positioned against the connecting inclined surface (123). The outer surface of the plate (5) is basically flush with the outer surface of the second outer frame edge (122).

14. The waterproof and dustproof cabinet frame according to claim 2, characterized in that, The guide grooves (14) of the crossbeam (2), longitudinal beam (3), and column (4) are interconnected through the drainage channel (63) to form an interconnected drainage network; water that seeps into the guide groove (14) of any profile (1) can be gradually guided downward through the drainage network and finally discharged from the bottom of the cabinet to the outside of the cabinet.

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