A modular connection assembly for cabinet corner

Abstract

This invention discloses a modular splicing connection component for the corner of a cabinet frame, relating to the field of cabinet frame connection structure technology, and solving a series of problems such as the non-removable nature of connection components. The component includes an inner frame splicing module and an outer frame splicing module. The inner frame splicing module has an inner right-angle member with an inner horizontal end and an inner vertical end, and an inner straight member with an inner straight end. Each end is inserted into the inner frame of the corresponding profile and covers the port. The inner right-angle member and the inner straight member are fixed together by mortise and tenon joints. The outer frame splicing module has an outer right-angle member with an outer horizontal end and an outer vertical end, and an outer straight member with an outer straight end. Each end is inserted into the outer frame of the corresponding profile and covers the port. The outer right-angle member and the outer straight member are fixed together by mortise and tenon joints. This achieves independent connection and collaborative load-bearing of the two-layer frame, improving the structural strength of the nodes; the step-by-step insertion during assembly reduces assembly difficulty; and the covering of the corresponding port by each end effectively prevents moisture and dust from penetrating into the profile.

Description

Technical Field

[0001] This invention relates to the field of cabinet frame connection structure technology, and in particular to a modular connection component for splicing at the corner of a cabinet frame. Background Technology

[0002] As a fundamental load-bearing structure in fields such as power, communications, industrial automation, and data centers, cabinet frames are typically constructed by vertically splicing multiple horizontal beams, multiple vertical beams, and multiple columns to form a frame that supports and encloses various electrical and electronic components and equipment. The overall structural strength, protective performance, assembly efficiency, and maintainability of the cabinet frame largely depend on the cross-sectional characteristics of the profiles themselves and the design of the corner connection structures between the profiles.

[0003] To improve the waterproof and dustproof performance and structural strength of cabinet frames, existing technologies have developed profile solutions with double-layer frames and guide groove structures. This type of profile typically includes an inner frame and an outer frame. The inner frame provides a support surface for internal equipment installation, while the outer frame forms a reinforcing frame on the outermost side of the profile. The inner and outer frames, along with the blocking section, enclose a guide groove. Except for the slot for panel installation, the guide groove has a continuous, closed structure on its surrounding walls. This confines water that seeps in along the panel installation gaps within the groove and directs it axially, while simultaneously preventing water from contacting the inner cavity of the inner frame, thus achieving the waterproof and dustproof function of the cabinet frame.

[0004] Regarding corner connections, existing cabinet frames typically use corner connectors to assemble and fix multiple profiles at the joints. However, existing technologies are mainly divided into two categories: fixed welded connections and detachable bolted connections. For profiles with the aforementioned double-layer frame and guide groove structure, existing corner connection solutions are not suitable and both suffer from insurmountable systemic defects: First, while fixed welded connection assemblies offer high structural strength, they suffer from fatal flaws, including being non-removable and incurring extremely high transportation and maintenance costs. These assemblies require the connectors to be welded to the profiles at the factory or on-site, necessitating the transport of the entire frame as a single unit. This results in a massive size and transportation costs three to five times higher than transporting individual components, and the assemblies are highly susceptible to deformation and damage during transport. Furthermore, both welded and bolted connection assemblies present assembly difficulties when employing an integral three-way connection structure. Assembly requires simultaneously aligning and inserting the three interlocking parts into the cavities of the three profiles. Since the three profiles are spatially perpendicular and their end faces are close together, the operating space is extremely limited. Alignment between the multi-directional interlocking parts and the profile cavities is challenging, often requiring repeated adjustments to the relative positions of the profiles to complete the assembly, resulting in low assembly efficiency.

[0005] Secondly, existing detachable bolted connection assemblies generally suffer from insufficient connection strength and poor positioning accuracy. Most detachable connectors are fixed by only one or a few bolts, resulting in concentrated stress points. Under heavy loads, strong winds, or long-term vibration, bolts are prone to loosening, connector deformation, or even breakage. Furthermore, these connection assemblies typically lack effective pre-positioning structures, making it difficult to accurately control the relative positions of components during assembly, thus affecting the overall squareness and dimensional accuracy of the cabinet frame.

[0006] Furthermore, existing detachable connection components generally disrupt the continuity of the guide channel, making active drainage impossible. To achieve detachable connections, most connectors seal the end face of the profile at the corner joints, cutting off the guide channel. This causes water that has seeped into the guide channel to accumulate at the corners, eventually seeping into the inner frame through the gaps and damaging internal equipment. While a few solutions attempt to create drainage holes in the connectors to connect the guide channel, the cross-section of these holes is limited, resulting in low drainage efficiency. Moreover, the location of the holes is constrained by the structural strength requirements of the connectors, making it difficult to align them with the bottom of the guide channels in each direction, leading to poor water flow. Summary of the Invention

[0007] The purpose of this invention is to address the problems of fixed welded connection components being non-removable, having high transportation and maintenance costs, and being difficult to assemble, as well as the problems of detachable bolted connection components having insufficient connection strength, poor positioning accuracy, and disrupting the continuity of the guide groove, thus preventing active drainage. This invention provides a modular splicing connection component for the corner of a cabinet frame.

[0008] The technical solution of this invention: The cabinet frame includes multiple horizontal beams, multiple vertical beams, and multiple uprights. The horizontal beams, vertical beams, and uprights are perpendicularly connected to each other and assembled into a frame structure. The horizontal beams, vertical beams, and uprights are all made of the same profile, which includes an inner frame, an outer frame, and a blocking part. The outer frame is located diagonally outside the inner frame. The outer frame, the blocking part, and one side of the inner frame form a guide groove, and the internal space of the guide groove is isolated from the internal space of the inner frame. The axial end face of the profile is perpendicular to the axial direction of the profile. The horizontal beams, vertical beams, and uprights are all connected. When the profile end faces are assembled, they form a mutually perpendicular layout; the splicing modular connection component is set at the connection node of the crossbeam, longitudinal beam, and column, which includes an inner frame splicing module and an outer frame splicing module; the inner frame splicing module includes inner right-angle pieces and inner straight pieces; the inner right-angle pieces include inner horizontal end pieces and inner vertical end pieces that are perpendicularly distributed; the inner vertical end piece is inserted into the inner frame part of the column and is fixedly connected to the inner frame part of the column, and covers the port formed by the end face of the inner frame part of the profile; the inner horizontal end piece is inserted into one of the crossbeams or longitudinal beams. The profile is fixedly connected to the inner frame of the profile and covers the port formed by the end face of the inner frame of the profile; the inner straight member has an inner straight end, which is inserted into another profile whose inner horizontal end is not inserted, and is fixedly connected to the inner frame of the profile and covers the port formed by the end face of the inner frame of the profile; the inner right angle member is fixedly connected to the inner straight member by mortise and tenon joints; the outer frame splicing module includes an outer right angle member and an outer straight member; the outer right angle member includes an outer horizontal end and an outer vertical end that are perpendicularly distributed to each other; the outer vertical end is inserted into the column. The outer frame portion is fixedly connected to the outer frame portion of the column and covers the port formed by the end face of the outer frame portion of the profile; the outer transverse end is inserted into one of the profiles in the crossbeam and longitudinal beam and fixedly connected to the outer frame portion of the profile and covers the port formed by the end face of the outer frame portion of the profile; the outer straight member has an outer straight end, which is inserted into another profile whose outer transverse end is not inserted and fixedly connected to the outer frame portion of the profile and covers the port formed by the end face of the outer frame portion of the profile; the outer right angle member is fixedly connected to the outer straight member by tenon and mortise.

[0009] By adopting the above technical solution, the corner connection component is divided into two independent modules: an inner frame splicing module and an outer frame splicing module. This achieves a split connection of the double-layer frame at the corner node, allowing the inner and outer frames to independently bear loads and cooperate in stress distribution, thus improving the overall structural strength and deformation resistance of the corner connection node. During assembly, the insertion operation can be performed in steps: first, the right-angle piece is connected to the two profiles; then, the straight piece is inserted into the third profile and connected to the right-angle piece via mortise and tenon joints. This eliminates the need to simultaneously center the insertion parts in three directions, reducing assembly difficulty and improving assembly efficiency. Simultaneously, the split structure facilitates the transport of disassembled cabinet components and on-site assembly, reducing transport volume. The significant reduction in size lowers transportation costs and facilitates the individual replacement of damaged profiles, greatly improving maintainability. The combination of inner right-angle brackets and inner straight brackets, as well as the combination of outer right-angle brackets and outer straight brackets, can flexibly adapt to different layouts of beams and longitudinal beams according to actual needs. When the cabinet layout changes, only the installation direction of the straight brackets needs to be changed or different specifications of straight brackets need to be replaced to adapt, without the need to replace the entire connecting components. It has good modular expansion capabilities and versatility. In addition, each end covers the port formed by the inner or outer frame end face of the corresponding profile, effectively sealing the end opening and preventing moisture and dust from seeping into the profile from the port.

[0010] In one possible design, the inner frame splicing module also includes a first fastener; the inner right-angle piece has a first tenon and a first mortise on its mating surface with the inner straight piece, and the inner right-angle piece also has a first fixing hole that passes perpendicularly through the first mortise; the inner straight piece has a second tenon and a second mortise on its mating surface, and the second tenon has a second fixing hole that is perpendicular to the axis of the second tenon; when the inner right-angle piece and the inner straight piece are mortised and tenoned, the first tenon is inserted into the second mortise and the second tenon is inserted into the first mortise, and at the same time, the first fixing hole and the second fixing hole are coaxially connected and are fixedly connected by the first fastener inserted through the two.

[0011] With the above design, the inner right-angle component and the inner straight component adopt a two-way mortise and tenon joint structure. The first tenon and the second mortise, and the second tenon and the first mortise, interlock in pairs, forming a stable constraint in three dimensions, effectively preventing relative displacement and rotation between the spliced ​​components. When the mortise and tenon are in place, the first fixing hole and the second fixing hole automatically connect coaxially and are locked by the insertion of the first fastener, realizing the dual fixation of mortise and tenon connection and fastener locking. Even under vibration or impact loads, the fastener and the mortise and tenon structure restrain each other and will not loosen. The connection reliability is significantly higher than that of a single fixation method.

[0012] In one possible design, the outer frame splicing module also includes a second fastener; the outer right-angle piece has a third mortise hole on its mating surface with the outer straight piece, and the outer right-angle piece also has a third fixing hole that passes perpendicularly through the third mortise hole; the outer straight piece has a third tenon on its mating surface, and the third tenon has a fourth fixing hole that is perpendicular to the axis of the third tenon; when the outer right-angle piece and the outer straight piece are mortised and tenoned, the third tenon is inserted into the third mortise hole, and at the same time, the third fixing hole and the fourth fixing hole are coaxially connected and are fixedly connected by the second fastener inserted through the two.

[0013] The above design adopts a single tenon insertion into the mortise and fastener locking connection method for the outer frame splicing module. The structure is simple and the assembly efficiency is high. It reduces the processing difficulty while ensuring sufficient connection strength. When the third tenon is inserted into the third mortise, the third fixing hole and the fourth fixing hole automatically coaxially connect, which facilitates the quick insertion and locking of the second fastener. The assembly operation is simple and can realize rapid on-site assembly.

[0014] In one possible design, a positioning structure is provided between the inner right-angle piece and the inner straight piece. The positioning structure includes a positioning boss and a notched groove. One of the inner right-angle piece and the inner straight piece forms a positioning boss, and the other forms a notched groove at the corner. The positioning boss and the notched groove are matched to form a positioning.

[0015] By adopting the above design, the positioning boss and the notched groove provide accurate pre-positioning when the inner right-angle piece and the inner straight piece are connected, so that the two are in the correct relative position before the tenon and mortise are inserted. This effectively reduces the difficulty of aligning the tenon and the mortise and avoids damage or deformation of the tenon caused by forced insertion. The positioning boss and the notched groove form an interlocking structure at the corner, which further enhances the shear resistance of the splicing component in this area and improves the overall rigidity of the inner frame splicing module.

[0016] In one possible design, there is a gap between the inner frame splicing module and the outer frame splicing module to form a drainage channel that communicates with the guide groove, and the drainage channels are interconnected.

[0017] With the above design, the inner frame splicing module and the outer frame splicing module are set separately, and the natural gap between them forms a drainage channel. This drainage channel is connected to the guide grooves of the profiles in each direction, so that the drainage channels in the three directions converge and connect at the nodes to form an interconnected drainage network. No matter which direction the water flows into the node from the profile guide groove, it can be smoothly guided to other directions through this drainage network and finally discharged downwards along the column guide groove to the outside of the cabinet frame. This effectively avoids the accumulation and leakage of water at the corner nodes and solves the problem of corner water accumulation and leakage caused by cutting the guide groove in the existing technology. At the same time, the drainage channel is naturally formed by the assembly gap between the inner frame splicing module and the outer frame splicing module, without the need to open additional guide holes on the connectors, without weakening the structural strength of the connectors, and with sufficient drainage cross section and high diversion efficiency.

[0018] In one possible design, the top corner of the inner frame splicing module is integrally extended with a wing block, which blocks the port formed between the blocking parts of adjacent profiles and fixes the joint by welding.

[0019] With the above design, the wing block is precisely embedded in the port area between the adjacent profile blocking parts during assembly, forming a physical blockage and accurate positioning of the port, limiting the relative position of the adjacent blocking parts, and providing a stable assembly benchmark for subsequent welding. After the wing block blocks the port, the joint between it and the blocking part is fixed and sealed by welding, forming a double sealing effect of physical shielding and metallurgical combination. This can effectively prevent the sealing failure problem at the port caused by long-term vibration or temperature difference changes, and ensure the long-term sealing reliability of the corner node under harsh working conditions.

[0020] In one possible design, the inner right-angle piece and the inner straight piece extend vertically to form a protrusion and a tab, respectively. The protrusion and the tab fit together to seal the port formed between the blocking parts of the crossbeam and the longitudinal beam, and the joint is fixed by welding.

[0021] The above design, through the cooperation of protrusions and tabs, completely seals the top port formed between the crossbeam and the longitudinal beam blocking part, forming an all-round port sealing system with the lateral sealing of the wing block, further improving the waterproof and dustproof performance of the cabinet. The protrusions and tabs are respectively from two independent splicing parts, and naturally form the covering of the port during the assembly process with the splicing combination of the inner right angle piece and the inner straight piece. The structural design is ingenious and does not add any additional assembly steps.

[0022] In one possible design, the inner straight piece has a protruding insert along its thickness direction. The insert and the inner straight end clamp and position the bottom of the guide groove of the corresponding profile. The insert is also adapted to the shape of one side of the guide groove wall to form a positioning, and there is a gap between the insert and the other side of the guide groove wall.

[0023] With the above design, the insert and the inner straight end cooperate to clamp and position the bottom of the profile guide groove, so that the inner straight part can be accurately inserted into the predetermined position of the guide groove during assembly, improving assembly accuracy and ease of operation. The insert is positioned by adapting to the shape of one side of the guide groove wall, while maintaining a gap between it and the other side of the groove wall. This gap allows water to flow through, ensuring that the installation of the inner straight part will not block the drainage path of the guide groove, thus taking into account both the requirements of positioning accuracy and drainage continuity.

[0024] In one possible design, the roots of the inner horizontal end, inner vertical end, inner straight end, outer horizontal end, outer vertical end, and outer straight end each form a shoulder surface, which abuts against and covers the port formed by the corresponding profile end face.

[0025] With the above design, a shoulder surface is formed at the root of each end. When the end is inserted into the inner cavity of the profile until the shoulder surface abuts the end face of the profile, it indicates that the insertion is in place, forming a clear assembly stop. This makes it easy for operators to judge whether the insertion depth meets the standard and ensures the consistency of assembly quality. At the same time, the shoulder surface covers the port of the corresponding end face of the profile, completely sealing the port and preventing moisture and dust from entering the inner cavity of the profile or the inside of the connector from the port, further improving the protective performance of the joint.

[0026] In one possible design, the inner horizontal end, inner vertical end, and inner straight end are fixedly connected to the inner frame of the corresponding profile by welding; the outer horizontal end, outer vertical end, and outer straight end are fixedly connected to the outer frame of the corresponding profile by welding.

[0027] With the above design, each end is fixed to the corresponding frame of the profile by welding, so that the connecting components and the profile form an irremovable metallurgical bond. After welding and fixing, the components are transported to the site and then spliced, which does not occupy too much transportation resources. At the same time, the continuous weld formed by welding also has a certain sealing effect, which can further reduce the risk of moisture and dust seeping into the inner cavity of the profile along the joint gap. It is particularly suitable for outdoor cabinets and other application scenarios with high requirements for protection level and structural strength. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the assembled structure of the cabinet frame and the modular connection component of the present invention; Figure 2 This is an exploded view of the corner of the cabinet frame of the present invention; Figure 3 This is a schematic diagram of the structure of the profile of the present invention; Figure 4 This is a schematic diagram of the structure of the cabinet frame before splicing at the corner positions. Figure 1 ; Figure 5This is a schematic diagram of the structure of the cabinet frame before splicing at the corner positions. Figure 2 ; Figure 6 This is a schematic diagram of the inner frame splicing module of the present invention before and after splicing; Figure 7 This is a schematic diagram of the outer frame splicing module of the present invention before and after splicing; Among them, 200 is the profile; 201 is the inner frame; 202 is the outer frame; 203 is the blocking part; and 204 is the guide groove. 301. Horizontal beam; 302. Longitudinal beam; 303. Column; 40. Inner frame splicing module; 41. Inner right-angle piece; 411. Inner horizontal end; 412. Inner vertical end; 413. First tenon; 414. First mortise; 415. First fixing hole; 416. Protrusion; 42. Inner straight piece; 421. Inner straight end; 422. Second tenon; 423. Second mortise; 424. Second fixing hole; 425. Protrusion; 426. Insert; 43. First fastener; 441. Positioning boss; 442. Notched corner groove; 45. Wing block; 50. Outer frame splicing module; 51. Outer right-angle piece; 511. Outer horizontal end; 512. Outer vertical end; 513. Third mortise; 514. Third fixing hole; 52. Outer straight piece; 521. Outer straight end; 522. Third tenon; 523. Fourth fixing hole; 53. Second fastener; 60. Drainage channel; 61. Shoulder surface. Detailed Implementation

[0029] like Figures 1 to 5 The diagram illustrates a modular, interlocking connection assembly for the corner of a cabinet frame. This assembly is used in a cabinet frame structure formed by the perpendicular splicing of multiple horizontal beams 301, multiple vertical beams 302, and multiple vertical columns 303. The horizontal beams 301 are horizontally positioned along the width of the cabinet frame, the vertical beams 302 are horizontally positioned along the depth of the cabinet frame, and the vertical columns 303 are vertically positioned along the height of the cabinet frame. Together, they form a cuboid or cubic frame. The horizontal beams 301, vertical beams 302, and vertical columns 303 are all made of profiles 200 with the same cross-sectional shape. These profiles 200 can be integrally formed using an aluminum extrusion process, or they can be made from other metals or alloys through extrusion or drawing processes. The cross-sectional shape of the profile 200 remains constant along its length.

[0030] like Figure 2As shown, the profile 200 includes an inner frame portion 201, an outer frame portion 202, and a blocking portion 203. The inner frame portion 201 is located on the inner side of the profile 200, providing a mounting support surface for electrical components, mounting plates, etc., inside the cabinet. The outer frame portion 202 is located diagonally outside the inner frame portion 201, that is, the outer frame portion 202 and the inner frame portion 201 are arranged opposite each other in the diagonal direction of the profile 200 cross-section. The outer frame portion 202, the blocking portion 203, and one side of the inner frame portion 201 together form a guide groove 204. The guide groove 204 extends along the axial direction of the profile 200, and except for the slot for inserting the edge of the plate, the remaining peripheral walls form a continuous, closed barrier without openings, completely isolating the internal space of the guide groove 204 from the internal space of the inner frame portion 201. External moisture or dust, after entering the guide groove 204 through the slot, cannot overcome this continuous barrier to seep into the inner cavity of the inner frame portion 201. The axial end face of profile 200 is perpendicular to the axial direction of profile 200, that is, the end of each profile 200 is precisely cut to make its end face a flat plane. When the crossbeam 301, longitudinal beam 302 and column 303 are spliced ​​at the node, the end faces of the profiles 200 of the three form a spatial layout relationship that is perpendicular to each other.

[0031] In this embodiment, the modular connection assembly is located at the connection node of the crossbeam 301, longitudinal beam 302, and column 303, and is used to fix the three profiles 200 at the right-angle node. The connection assembly includes an inner frame splicing module 40 and an outer frame splicing module 50, which are independent separate structures, respectively connecting and fixing the inner frame portion 201 and the outer frame portion 202 of the profile 200.

[0032] like Figures 1 to 6 As shown, the inner frame splicing module 40 includes an inner right-angle piece 41 and an inner straight piece 42, which are connected and combined into one piece by mortise and tenon joints.

[0033] The inner right-angle member 41 includes an inner transverse end 411 and an inner vertical end 412 that are perpendicularly distributed to each other. The inner transverse end 411 extends horizontally, and the inner vertical end 412 extends vertically. The inner vertical end 412 is inserted into the inner frame portion 201 of the column 303, and its cross-sectional shape is adapted to the cross-sectional shape of the inner cavity of the inner frame portion 201. After the inner vertical end 412 is inserted into place, it is fixedly connected to the inner frame portion 201 of the column 303 by welding, forming a non-removable metallurgical bond, and covering the port formed by the end face of the inner frame portion 201 of the column 303. The inner transverse end 411 is inserted into the inner frame portion 201 of one of the profiles 200 in the crossbeam 301 or the longitudinal beam 302, and is fixedly connected to the inner frame portion 201 of the profile 200 by welding, and covers the port formed by the end face of the inner frame portion 201 of the profile 200.

[0034] The inner straight member 42 has an inner straight end 421, which extends horizontally and whose cross-sectional shape is adapted to the cross-sectional shape of the inner cavity of the inner frame portion 201. The inner straight end 421 is inserted into the inner frame portion 201 of another profile 200 where the inner transverse end 411 is not inserted, and is fixedly connected to the inner frame portion 201 of the profile 200 by welding, and covers the port formed by the end face of the inner frame portion 201 of the profile 200. For example, if the inner transverse end 411 of the inner right-angle member 41 is inserted into the crossbeam 301, then the inner straight end 421 is inserted into the longitudinal beam 302; if the inner transverse end 411 of the inner right-angle member 41 is inserted into the longitudinal beam 302, then the inner straight end 421 is inserted into the crossbeam 301. Thus, the inner right-angle member 41 and the inner straight member 42 respectively cover the inner frame portion 201 port of the profile 200 in three directions.

[0035] The inner right-angle member 41 and the inner straight member 42 are fixed together by a mortise and tenon joint. Specifically, the inner right-angle member 41 has a first tenon 413 and a first mortise hole 414 on its mating surface with the inner straight member 42. The inner right-angle member 41 also has a first fixing hole 415 that passes perpendicularly through the first mortise hole 414. The inner straight member 42 has a second tenon 422 and a second mortise hole 423 on its mating surface with the inner right-angle member 41. The second tenon 422 has a second fixing hole 424 that is perpendicular to the axis of the second tenon 422. When the inner right-angle member 41 and the inner straight member 42 are mortised and tenoned, the first tenon 413 is inserted into the second mortise hole 423, and the second tenon 422 is inserted into the first mortise hole 414. The two pairs of mortise and tenon structures interlock, forming a stable constraint in three spatial dimensions. After the mortise and tenon joint is in place, the first fixing hole 415 and the second fixing hole 424 automatically pass through coaxially. The inner frame splicing module 40 also includes a first fastener 43, which is inserted into a coaxial through first fixing hole 415 and second fixing hole 424 to lock and fix the inner right-angle piece 41 and the inner straight piece 42. The first fastener 43 can be a detachable fastener such as a bolt or a pin.

[0036] A positioning structure is also provided between the inner right-angle piece 41 and the inner straight piece 42. The positioning structure includes a positioning boss 441 and a notched groove 442. In this embodiment, the positioning boss 441 is formed on the inner right-angle piece 41, and the notched groove 442 is formed at the corresponding corner position of the inner straight piece 42. When the inner right-angle piece 41 and the inner straight piece 42 are mated, the positioning boss 441 is embedded in the notched groove 442, and the two are matched in shape, providing a precise pre-position for the tenon and mortise insertion, so that the tenon and the mortise are already in the correct position before insertion, reducing the difficulty of assembly alignment.

[0037] The root of each of the inner horizontal end 411, inner vertical end 412, and inner straight end 421 forms a shoulder surface 61. The shoulder surface 61 is located at the position where the end meets the main body. When each end is inserted into the inner frame portion 201 of the corresponding profile 200 until the shoulder surface 61 abuts against the end face of the profile 200, it indicates that the insertion is in place, forming a clear assembly stop. After being assembled in place, the shoulder surface 61 covers the port formed by the end face of the inner frame portion 201 of the corresponding profile 200, completely sealing the port.

[0038] like Figures 1 to 5 , Figure 7 As shown, the outer frame splicing module 50 includes an outer right-angle piece 51 and an outer straight piece 52, which are connected and combined into one piece by mortise and tenon joints.

[0039] The outer right-angle member 51 includes an outer horizontal end 511 and an outer vertical end 512 that are perpendicularly distributed to each other. The outer vertical end 512 is inserted into the outer frame portion 202 of the column 303, and its cross-sectional shape is adapted to the inner cavity cross-sectional shape of the outer frame portion 202. After the outer vertical end 512 is inserted into place, it is fixedly connected to the outer frame portion 202 of the column 303 by welding, and covers the port formed by the end face of the outer frame portion 202 of the column 303. The outer horizontal end 511 is inserted into the outer frame portion 202 of one of the profiles 200 in the crossbeam 301 or the longitudinal beam 302, and is fixedly connected to the outer frame portion 202 of the profile 200 by welding, and covers the port formed by the end face of the outer frame portion 202 of the profile 200.

[0040] The outer straight member 52 has an outer straight end 521, which is inserted into the outer frame portion 202 of another profile 200 that is not connected to the outer transverse end 511, and is fixedly connected to the outer frame portion 202 of the profile 200 by welding, and covers the port formed by the end face of the outer frame portion 202 of the profile 200.

[0041] If the inner transverse end 411 of the inner right-angle piece 41 is inserted into the inner frame portion 201 of the crossbeam 301, then for ease of transportation and assembly, the outer transverse end 511 is also inserted into the outer frame portion 202 of the crossbeam 301, and the outer straight end 521 is inserted into the outer frame portion 202 of the longitudinal beam 302.

[0042] The outer right-angle piece 51 and the outer straight piece 52 are fixed together by a mortise and tenon joint. Specifically, the outer right-angle piece 51 has a third mortise hole 513 on its mating surface with the outer straight piece 52, and a third fixing hole 514 perpendicularly passing through the third mortise hole 513. The outer straight piece 52 has a corresponding third tenon 522 on its mating surface, and a fourth fixing hole 523 perpendicular to the axis of the third tenon 522. When the outer right-angle piece 51 and the outer straight piece 52 are mortised and tenoned together, the third tenon 522 is inserted into the third mortise hole 513. After the mortise and tenon joint is in place, the third fixing hole 514 and the fourth fixing hole 523 automatically pass through coaxially. The outer frame splicing module 50 also includes a second fastener 53, which passes through the coaxially passing third fixing hole 514 and fourth fixing hole 523 to lock and fix the outer right-angle piece 51 and the outer straight piece 52.

[0043] like Figure 6 , Figure 7 As shown, the roots of the outer horizontal end 511, outer vertical end 512, and outer straight end 521 also form a shoulder surface 61, which, after being assembled in place, abuts against and covers the port formed by the end face of the corresponding profile 200 outer frame 202.

[0044] like Figures 1 to 5 As shown, there is a gap between the inner frame splicing module 40 and the outer frame splicing module 50. This gap is naturally formed because the inner frame splicing module 40 and the outer frame splicing module 50 are separately arranged in the inner and outer directions of the profile 200 cross section. This gap is connected to the guide grooves 204 of the profile 200 in each direction, forming drainage channels 60. Specifically, the drainage channels 60 in the three directions intersect and connect with each other in the space between the connecting platform guide surface and the outer frame connector, forming an interconnected drainage network. No matter which direction the water flows into the node from the guide groove 204 of the profile 200, it can be smoothly guided to other directions through this drainage network.

[0045] At the corner joint, a port is formed between the blocking portions 203 of adjacent profiles 200. This embodiment provides multiple sealing structures for this port. A wing block 45 is integrally extended from the top corner of the inner frame splicing module 40. The wing block 45 is located at the top corner of the inner frame splicing module 40 facing the outside of the cabinet frame. During assembly, it is precisely embedded in the port between the blocking portions 203 of adjacent profiles 200, forming a physical seal and precise positioning for the port. After the wing block 45 is in place, the joint between it and the blocking portion 203 is fixed and sealed by welding. Of course, if the port gap between the blocking portions 203 of adjacent profiles 200 is small and the end faces of the blocking portions 203 are close to each other, the port can be sealed directly by welding without relying on the physical sealing of the wing block 45. During welding, the solder fills and covers the port gap, and after solidification, it forms a dense metal sealing layer, completely sealing the port.

[0046] A protrusion 416 extends vertically from the inner right-angle member 41, and a tab 425 extends vertically from the inner straight member 42. During assembly, the protrusion 416 and tab 425 are embedded together at the port formed between the blocking portions 203 of the crossbeam 301 and the longitudinal beam 302, physically sealing the port. After the protrusion 416 and tab 425 are in place, the joint between them and the blocking portion 203 is fixed and sealed by welding.

[0047] Furthermore, the inner straight member 42 has a protruding insert 426 along its thickness direction on the tab 425. The insert 426 cooperates with the inner straight end 421 to clamp and position the bottom of the guide groove 204 of the corresponding profile 200, so that the inner straight member 42 can be accurately inserted into the predetermined position of the guide groove 204 during assembly. The insert 426 also adapts to the shape of one side wall of the guide groove 204 to form a positioning, ensuring the accurate installation position of the inner straight member 42. At the same time, a gap is maintained between the insert 426 and the other side wall of the guide groove 204, which allows water to flow through the guide groove 204, ensuring that the installation of the inner straight member 42 does not block the drainage path of the guide groove 204.

[0048] The assembly process of the modular connection component in this embodiment adopts an assembly method that combines factory pre-assembly welding with on-site splicing and assembly. Specifically: During the factory pre-assembly stage, the inner vertical end 412 of the inner right-angle piece 41 is first inserted into the inner frame portion 201 of the column 303, so that the shoulder surface 61 abuts against the end face of the column 303. Then, the joint between the inner vertical end 412 and the inner wall of the inner frame portion 201 is welded and fixed. At the same time, the inner horizontal end 411 of the inner right-angle piece 41 is inserted into the inner frame portion 201 of one of the profiles 200 of the crossbeam 301 or longitudinal beam 302, so that the shoulder surface 61 abuts against the end face of the profile 200 and is welded and fixed. The inner straight end 421 is inserted into the inner frame portion 201 of the remaining profile 200, and is similarly welded and fixed after the shoulder surface 61 abuts against the end face. Following the same method, the outer vertical end 512 and outer horizontal end 511 of the outer right-angle member 51, and the outer straight end 521 of the outer straight member 52 are respectively inserted into the outer frame portion 202 of the corresponding profile 200, and welded to fix them after the shoulder surface 61 abuts against the end face. At this time, the inner right-angle member 41 is welded to the column 303 and one horizontal profile 200 as a whole, and the inner straight member 42 is welded to another horizontal profile 200 as a whole; the outer right-angle member 51 is welded to the column 303 and one horizontal profile 200 as a whole, and the outer straight member 52 is welded to another horizontal profile 200 as a whole. Then, the wing block 45 is embedded at the port between the blocking portion 203 of the adjacent profile 200, and the protrusion 416 and the protrusion 425 are embedded at the port between the blocking portion 203 of the crossbeam 301 and the longitudinal beam 302. The joint between the wing block 45 and the blocking portion 203 is welded and sealed.

[0049] After welding, each profile 200 and its corresponding right-angle or straight component form several independent assemblies. These assemblies can be stacked and packaged in flatbed form, significantly reducing their volume, facilitating transportation, greatly reducing transportation costs, and minimizing the risk of deformation or damage during transportation.

[0050] During the on-site assembly phase, the aforementioned components are transported to the installation site and then assembled. First, the component with the inner right-angle piece 41 is mated with the component with the inner straight piece 42, so that the positioning boss 441 is embedded into the notch 442 to form a pre-position. Then, the first tenon 413 is inserted into the second mortise 423, and the second tenon 422 is inserted into the first mortise 414, so that the inner right-angle piece 41 and the inner straight piece 42 are connected as a single unit through the tenon and mortise joint. After the tenon and mortise are in place, the first fastener 43 is inserted into the coaxially penetrating first fixing hole 415 and second fixing hole 424 and locked. In the same manner, the outer right-angle piece 51 is matted with the outer straight piece 52, so that the third tenon 522 is inserted into the third mortise 513. Then, the second fastener 53 is inserted into the coaxially penetrating third fixing hole 514 and fourth fixing hole 523 and locked. After the assembly is completed, the entire corner node assembly is finished.

[0051] After the above assembly is completed, the guide grooves 204 of the profiles 200 in each direction are interconnected through the drainage channels 60 between the inner frame splicing module 40 and the outer frame splicing module 50. When water seeps into the guide groove 204 from the panel installation gaps at any position of the cabinet frame, it flows along the guide groove 204 under the action of gravity. When the water reaches the corner node, it flows to other directions through the confluence of the drainage channels 60, and finally flows into the guide groove 204 of the column 303 and is discharged downwards to the outside of the cabinet frame. The interval maintained between the insert 426 and the groove wall of the guide groove 204 also provides additional space for water flow, ensuring that the drainage path is unobstructed throughout.

Claims

1. A modular connection component for the corner of a cabinet frame, the cabinet frame comprising multiple horizontal beams (301), multiple vertical beams (302), and multiple uprights (303), the horizontal beams (301), vertical beams (302), and uprights (303) being perpendicularly connected to each other to form a frame structure; the horizontal beams (301), vertical beams (302), and uprights (303) are all made of the same profile (200), the profile (200) comprising an inner frame (201), an outer frame (202), and a blocking part (203), the outer frame (201 ... outer frame (202), the outer frame (202), and the outer frame (202) comprising an outer frame (202), the outer frame (202), and the outer frame (202) comprising an outer frame (202), the outer frame (202), and the outer frame (202 02) Located on the diagonal outer side of the inner frame (201), the outer frame (202), the blocking part (203) and one side of the inner frame (201) enclose a guide groove (204), and the internal space of the guide groove (204) is isolated from the internal space of the inner frame (201); the axial end face of the profile (200) is perpendicular to the axial direction of the profile (200), and the profile (200) end faces of the crossbeam (301), the longitudinal beam (302) and the column (303) are arranged to be perpendicular to each other when they are assembled; Its features are: The modular splicing connection assembly is located at the connection node of the crossbeam (301), longitudinal beam (302), and column (303), and includes an inner frame splicing module (40) and an outer frame splicing module (50). The inner frame splicing module (40) includes an inner right-angle member (41) and an inner straight member (42); the inner right-angle member (41) includes an inner horizontal end (411) and an inner vertical end (412) that are perpendicularly distributed to each other; the inner vertical end (412) is inserted into the inner frame part (201) of the column (303) and is fixedly connected to the inner frame part (201) of the column (303), and covers the port formed by the end face of the inner frame part (201) of the profile (200); the inner horizontal end (411) is inserted through one of the profiles (200) of the crossbeam (301) and the longitudinal beam (302). And, and is fixedly connected to the inner frame (201) of the profile (200), and covers the port formed by the end face of the inner frame (201) of the profile (200); the inner straight member (42) has an inner straight end (421), the inner straight end (421) is inserted into another profile (200) whose inner transverse end (411) is not inserted, and is fixedly connected to the inner frame (201) of the profile (200), and covers the port formed by the end face of the inner frame (201) of the profile (200); the inner right angle member (41) and the inner straight member (42) are fixedly connected by tenon and mortise; The outer frame splicing module (50) includes an outer right-angle member (51) and an outer straight member (52); the outer right-angle member (51) includes an outer horizontal end (511) and an outer vertical end (512) that are perpendicularly distributed to each other; the outer vertical end (512) is inserted into the outer frame part (202) of the column (303) and is fixedly connected to the outer frame part (202) of the column (303), and covers the port formed by the end face of the outer frame part (202) of the profile (200); the outer horizontal end (511) is inserted through one of the profiles (200) in the crossbeam (301) and the longitudinal beam (302). ), and is fixedly connected to the outer frame (202) of the profile (200), and covers the port formed by the end face of the outer frame (202) of the profile (200); the outer straight member (52) has an outer straight end (521), the outer straight end (521) is inserted into another profile (200) that is not inserted into the outer transverse end (511), and is fixedly connected to the outer frame (202) of the profile (200), and covers the port formed by the end face of the outer frame (202) of the profile (200); the outer right angle member (51) and the outer straight member (52) are fixedly connected by tenon and mortise.

2. The modular connection assembly for the corner of the cabinet frame according to claim 1, characterized in that, The inner frame splicing module (40) also includes a first fastener (43); the inner right-angle member (41) has a first tenon (413) and a first mortise (414) on its mating surface with the inner straight member (42), and the inner right-angle member (41) also has a first fixing hole (415) that passes vertically through the first mortise (414); the inner straight member (42) has a second tenon (422) and a second mortise (423) on its mating surface, the second tenon (413) and the first mortise (414) are provided with ... right-angle member (41) has a first tenon (413) and a first mortise (414) on its mating surface, the second tenon (413) and the first mortise (414) are provided with a first fixing hole (415) that passes vertically through the first mortise (414); the inner straight member (42) has a first tenon (413) and a second mortise (414) on its mating surface, the second tenon (413) and the first mortise (414) are provided with a first fixing hole 22) A second fixing hole (424) perpendicular to the axis of the second tenon (422) is provided on it; when the inner right-angle piece (41) and the inner straight piece (42) are mortised and tenoned, the first tenon (413) is inserted into the second mortise (423) and the second tenon (422) is inserted into the first mortise (414). At the same time, the first fixing hole (415) and the second fixing hole (424) are coaxially connected and are fixedly connected by the first fastener (43) through the two.

3. The modular connection assembly for the corner of the cabinet frame according to claim 1 or 2, characterized in that, The outer frame splicing module (50) also includes a second fastener (53); the outer right angle piece (51) has a third mortise hole (513) on its mating surface with the outer straight piece (52), and the outer right angle piece (51) also has a third fixing hole (514) that passes vertically through the third mortise hole (513); the outer straight piece (52) has a third tenon (522) on its mating surface, and the third tenon (522) has a fourth fixing hole (523) that is perpendicular to the axis of the third tenon (522); when the outer right angle piece (51) and the outer straight piece (52) are mortised and tenoned, the third tenon (522) is inserted into the third mortise hole (513), and at the same time, the third fixing hole (514) and the fourth fixing hole (523) are coaxially connected and fixedly connected by the second fastener (53) through the two.

4. The modular connection assembly for the corner of the cabinet frame according to claim 1 or 2, characterized in that, A positioning structure is provided between the inner right-angle member (41) and the inner straight member (42). The positioning structure includes a positioning boss (441) and a notched groove (442). One of the inner right-angle member (41) and the inner straight member (42) forms the positioning boss (441), and the other forms the notched groove (442) at the corner. The positioning boss (441) and the notched groove (442) are adapted to each other to form a positioning.

5. The modular connection assembly for the corner of the cabinet frame according to claim 1 or 2, characterized in that, There is a gap between the inner frame splicing module (40) and the outer frame splicing module (50) to form a drainage channel (60) that communicates with the guide groove (204), and each drainage channel (60) is interconnected.

6. The modular connection assembly for the corner of the cabinet frame according to claim 1 or 2, characterized in that, The inner frame splicing module (40) is integrally extended with a wing block (45) at the top corner. The wing block (45) is sealed at the port formed between the blocking part (203) of the adjacent profile (200) and the joint is fixed by welding.

7. The modular connection assembly for the corner of the cabinet frame according to claim 1 or 2, characterized in that, The inner right-angle member (41) and the inner straight member (42) extend vertically to form a protrusion (416) and a protrusion (425), respectively. The protrusion (416) and the protrusion (425) fit together to jointly seal the port formed between the blocking part (203) of the crossbeam (301) and the longitudinal beam (302), and fix the joint by welding.

8. The modular connection assembly for the corner of the cabinet frame according to claim 7, characterized in that, The inner straight member (42) has a protruding tab (425) with a protruding insert (426) along its thickness direction. The insert (426) and the inner straight end (421) clamp and position the bottom of the guide groove (204) of the corresponding profile (200). The insert (426) is also adapted to the shape of one side of the guide groove (204) to form a positioning, and there is a gap between the insert (426) and the other side of the guide groove (204).

9. The modular connection assembly for the corner of the cabinet frame according to claim 1 or 2, characterized in that, The root of each of the inner horizontal end (411), inner vertical end (412), inner straight end (421), outer horizontal end (511), outer vertical end (512), and outer straight end (521) forms a shoulder surface (61), which abuts against and covers the port formed by the end face of the corresponding profile (200).

10. The modular connection assembly for the corner of the cabinet frame according to claim 1 or 2, characterized in that, The inner horizontal end (411), inner vertical end (412), and inner straight end (421) are respectively fixedly connected to the inner frame part (201) of the corresponding profile by welding; the outer horizontal end (511), outer vertical end (512), and outer straight end (521) are respectively fixedly connected to the outer frame part (202) of the corresponding profile by welding.

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