Mortise and tenon fastening type convenient assembled cabinet

Abstract

The utility model discloses a mortise and tenon fastening type convenient assembled cabinet, relates to the technical field of electrical cabinets, and solves the problems of low installation efficiency and the like. Comprising a plane frame and a frame body, and the plane frame and the frame body are connected through a tenon-and-mortise assembly. The mortise and tenon joint assembly comprises a connecting column, a connector, a first fastening piece and a second fastening piece. When the plane frame and the frame body are spliced, the first tenon is inserted into the second mortise hole, the second tenon is inserted into the first mortise hole, the first fastener penetrates into the second through hole from the first fixing hole so as to be fixedly connected with the second tenon, and the second fastener penetrates into the first through hole from the second fixing hole so as to be fixedly connected with the first tenon. Rapid positioning is achieved through tenon-and-mortise cross insertion, the problems that a traditional three-way structure is complex in machining procedure and wastes materials are solved, space compression during transportation and storage is achieved through a detachable splicing structure, space is saved, logistics cost is reduced, the installation technical threshold is remarkably reduced, and the cabinet is more rapid and convenient to install and adjust.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical cabinets, in particular to a mortise and tenon fastening type convenient assembly cabinet. Background Art

[0002] In areas such as electronic equipment storage, industrial control, and data centers, rack cabinets are the essential carriers for installing important electronic components such as servers, switches, and power supplies. With the rapid development of information technology and integrated automatic control technology, equipment integration is constantly increasing. The structural design, manufacturing, installation, and maintenance efficiency of rack cabinets have become key factors affecting the cost and reliability of the entire system.

[0003] At present, traditional assembled cabinets have obvious defects in their structural design. Their eight corners usually use three-way components with complex structures and high material consumption to achieve the connection of rods in various directions. This three-way structure not only consumes a large amount of raw materials and significantly increases production costs, but also makes the structure complex due to the need for multi-directional drilling and tapping. It requires multiple processes during processing and manufacturing, resulting in high processing difficulty and low production efficiency. At the same time, during the assembly process of the cabinet, the three-way components need to be precisely aligned with the connection points in multiple directions during installation. The complex three-way structure increases the difficulty and time cost of installation, and the installation accuracy is difficult to guarantee. In addition, traditional cabinets are mostly integral welded structures or assembled structures that rely on complex connectors. They cannot be disassembled during storage and transportation, occupy a large space, and have high logistics costs. On-site installation also faces the problems of cumbersome processes and high technical requirements for installers, making it difficult to meet the needs of efficient and convenient modern production and installation. Utility Model Content

[0004] The purpose of the present invention is to overcome the defects of the prior art, provide a mortise and tenon fastened cabinet for easy assembly, which is a cabinet technical solution that takes into account the convenience of assembly and disassembly, structural strength and cost-effectiveness, so as to solve the problems of complex production, inefficient installation and difficult transportation in the prior art.

[0005] Technical solution of the utility model: It includes a planar frame and a frame body. The planar frame and the frame body are connected by a mortise and tenon assembly. The mortise and tenon assembly includes a connecting column, a joint, a first fastener, and a second fastener. The connecting column and the joint are respectively fixed inside the ends of the planar frame and the frame body. The connecting column is provided with a first tenon and a first mortise on its docking surface. A first through hole perpendicular to the axis of the first tenon is opened on the first tenon, and a first fixing hole vertically passing through the first mortise is also opened on the connecting column. The joint is provided with a second tenon and a second mortise on its docking surface. A second through hole perpendicular to the axis of the second tenon is opened on the second tenon, and a second fixing hole vertically passing through the second mortise is also opened on the joint. When the planar frame and the frame body are spliced, the first tenon is inserted into the second mortise and the second tenon is inserted into the first mortise. Moreover, the first fastener penetrates from the first fixing hole into the second through hole to form a fixed connection with the second tenon, and the second fastener penetrates from the second fixing hole into the first through hole to form a fixed connection with the first tenon.

[0006] With the above technical solution, by replacing the traditional tee component with a mortise and tenon assembly, the cabinet is disassembled into a modular structure of a planar frame and a frame body. The mortise and tenon cross-insertion realizes rapid positioning, and the double-direction fastening forms a rigid connection, forming a double-direction mortise and tenon interlocking and fastening structure. This not only solves the problems of complex processing procedures and material waste of the traditional tee structure, but also realizes space compression during transportation and storage through a detachable assembly structure, saves space and reduces logistics costs. At the same time, by using the mortise and tenon fastening method, the connection strength and anti-torsion performance of the frame are improved, the installation process is simplified from multi-component alignment to modular insertion, significantly reducing the installation technical threshold, making the installation and adjustment of the cabinet more rapid and convenient, and solving the problems of difficult processing and low installation accuracy of the traditional cabinet.

[0007] In a possible design, there are multiple first tenons and the second mortises docked with them. The multiple first tenons are arranged at linear intervals. There are multiple second tenons and the first mortises docked with them. The multiple second tenons are arranged at linear intervals.

[0008] With the above design, the structure of multiple tenons arranged at linear intervals converts single-point force into linear uniform force. By increasing the number of meshing points on the contact interface, the load is dispersed to multiple connection points, making the force distribution on the connection contact surface more uniform, avoiding connection failure caused by local stress concentration. Especially when the cabinet bears heavy equipment or is subjected to vibration loads, the connection stability can be maintained through the coordinated action of multiple tenons, solving the problem of easy loosening under complex loads and improving the anti-shear ability of the connection part.

[0009] In a possible design, the first fixing hole is a stepped countersunk screw hole, and the first fastener is a tapered countersunk screw. The tapered countersunk screw forms a threaded connection with the stepped countersunk screw hole and the second through hole respectively.

[0010] With the above design, the stepped countersunk screw hole and the tapered countersunk screw cooperate to enhance the anti-loosening performance by using the principle of self-locking of the conical surface; the head of the tapered countersunk screw sinks into the hole, which not only avoids external interference with the equipment installation, but also improves the flatness of the cabinet appearance through hidden installation, solving the problems of easy loosening and easy knocking of traditional exposed screws.

[0011] In a possible design, the second fixing hole is an internal thread blind hole, and the second fastener is an internal hexagonal set screw. The internal hexagonal set screws are respectively thread-connected with the internal thread blind hole and the first through hole.

[0012] With the above design, the set screw tightens the tenon from the inside, without the need to reserve an operating space on the outside of the profile, enabling rapid installation in a compact space. At the same time, it avoids the influence of the outside screw holes on the strength of the profile, solving the limitations of the traditional outside fastening method in environmental adaptability and installation space.

[0013] In a possible design, the planar frame includes a first frame bar and a second frame bar arranged perpendicular to each other. The second frame bar and the end of the frame body have mating profiling heads. A cavity is formed between the profiling head and the end face of the first frame bar, and the connecting column is installed in the cavity.

[0014] With the above design, the positioning and installation space integration are realized by using the shape of the profile itself. The matching accuracy of the profiling head directly determines the perpendicularity of the frame, and no additional positioning parts are required; the cavity provides an installation space for the connecting column. This structure not only ensures the assembly reference by using the forming accuracy of the profile, but also provides the spatial position of the connecting column through reasonable layout, helping to eliminate the manual alignment error, improving the installation efficiency and reducing the installation difficulty.

[0015] In a possible design, the profiling head and the frame body are respectively provided with relief holes for the first fastener and the second fastener to pass through.

[0016] With the above design, the relief holes provide a threading path for the fasteners, facilitating accurate alignment during installation and shortening the installation time.

[0017] In a possible design, the first frame bar, the second frame bar, and the connecting column are fixed to each other by welding.

[0018] With the above design, the welding of the connecting column eliminates the assembly gap, enables the load to be transmitted through a continuous metal structure, and significantly improves the bending strength. At the same time, the welding process reduces the number of connecting parts, simplifies the production process, and changes the processing of the planar frame from multi-part assembly to integral welding forming.

[0019] In a possible design, the frame body and the joint are fixed by welding.

[0020] With the above design, the welding eliminates the connection gap. When the cabinet is subjected to tensile or impact loads, the force can be quickly conducted through the integrated structure, avoiding the elastic deformation loss of traditional bolt connections. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the external structure of the present utility model;

[0022] Figure 2 It is an exploded view of the present utility model;

[0023] Figure 3 It is a schematic diagram of the structure at the connecting corner position of the present utility model;

[0024] Figure 4 It is an exploded cross-sectional view of the connecting corner position of the present utility model;

[0025] Figure 5 It is an installation schematic diagram of the connecting column and the joint of the present utility model;

[0026] Figure 6 It is an exploded view of the installation of the connecting column and the joint of the present utility model;

[0027] Figure 7 It is an exploded cross-sectional view of the connecting column and the joint of the present utility model;

[0028] Among them, 1. First frame bar; 2. Second frame bar; 3. Frame body; 4. Connecting column; 401. First tenon; 402. First through hole; 403. First mortise hole; 404. First fixing hole; 405. Chamfer; 41. Joint; 411. Second tenon; 412. Second through hole; 413. Second mortise hole; 414. Second fixing hole; 5. Second fastener; 6. First fastener; 21. Profiled head; 22. Relief hole; 9. Planar frame. Detailed Description of the Invention

[0029] As Figures 1 - 7 shown, a tenon-mortise fastening type convenient assembled cabinet includes a planar frame 9 and a frame body 3. The whole is composed of the planar frame 9 and the frame body 3 connected by a tenon-mortise assembly to form a cubic structure. The planar frame 9 includes a first frame bar 1 and a second frame bar 2 that are perpendicularly arranged. Among them, the actual carriers of the first frame bar 1, the second frame bar 2, and the frame body 3 can be any one of columns, crossbeams, and longitudinal beams; for example, when the first frame bar 1 is a column, the second frame bar 2 is a crossbeam, and the frame body 3 is a longitudinal beam; or when the first frame bar 1 is a longitudinal beam, the second frame bar 2 is a column, and the frame body 3 is a crossbeam, etc., and the rest of the combinations can be deduced by analogy according to actual installation requirements. There are four columns arranged along the height direction, four crossbeams arranged along the width direction, and four longitudinal beams arranged along the depth direction, and tenon-mortise assemblies are arranged at their connecting corner positions.

[0030] The mortise and tenon assembly includes a connecting column 4, a joint 41, a first fastener 6 and a second fastener 5. The connecting column 4 and the joint 41 are respectively fixed inside the end parts of a planar frame 9 and a frame body 3. On the docking surface of the connecting column 4, there are a first tenon 401 and a first mortise 403. A first through hole 402 perpendicular to the axis of the first tenon 401 is opened on the first tenon 401. A first fixing hole 404 vertically passing through the first mortise 403 is also opened on the connecting column 4. On the docking surface of the joint 41, there are a second tenon 411 and a second mortise 413. A second through hole 412 perpendicular to the axis of the second tenon 411 is opened on the second tenon 411. A second fixing hole 414 vertically passing through the second mortise 413 is also opened on the joint 41. When the planar frame 9 and the frame body 3 are spliced, the connecting column 4 and the joint 41 are inserted into each other. The first tenon 401 is inserted into the second mortise 413, and the second tenon 411 is inserted into the first mortise 403 to form a cross-insertion structure. Moreover, the first fastener 6 penetrates from the first fixing hole 404 into the second through hole 412 and then forms a fixation with the second tenon 411, and the second fastener 5 penetrates from the second fixing hole 414 into the first through hole 402 and then forms a fixation with the first tenon 401 to achieve two-way fastening.

[0031] To enhance the connection strength, multiple first tenons 401 of the connecting column 4 and multiple second tenons 411 of the joint 41 are provided, for example, one to three, and are arranged at linear intervals. Then, the second mortise 413 or the first mortise 403 docked with the corresponding tenon also has the same number of multiple ones. For example, on the docking surface of the connecting column 4, multiple first tenons 401 are distributed in parallel, and the corresponding second mortises 413 of the joint 41 are also arranged linearly, and vice versa. This design expands the contact interface of the mortise and tenon insertion into a linear area, and the load is evenly transmitted through multiple tenons to avoid single-point stress.

[0032] The first fixing hole 404 is a stepped countersunk screw hole, and the first fastener 6 is a tapered countersunk screw. The tapered countersunk screw forms a threaded connection with the stepped countersunk screw hole and the second through hole 412 respectively. The tapered countersunk screw is fixed on the inner wall of the second through hole 412 to form a radial pressure locking structure. The cone angle of the head of the tapered countersunk screw is the same as the cone angle of the stepped countersunk hole. When tightened, radial compressive stress is generated to prevent loosening. At the same time, the head of the tapered countersunk screw sinks into the hole, and the flatness of the appearance of the cabinet is improved through hidden installation.

[0033] The second fixing hole 414 is an internal thread blind hole, and the second fastener 5 is an internal hexagon socket set screw. The internal hexagon socket set screw forms a threaded connection with the internal thread blind hole and the first through hole 402 respectively. The combination of the internal thread blind hole and the internal hexagon socket set screw forms an internal fastening method; the set screw presses against the first tenon 401 from the inside, and there is no need to reserve an operating space outside the profile, and fast installation in a compact space can be realized.

[0034] The end parts of the second frame bar 2 and the frame body 3 are respectively provided with profiling heads 21, and the self-shapes of the two profiling heads 21 are adapted to each other without additional positioning parts. A cavity is formed between the profiling head 21 and the end face of the first frame bar 1, and the connecting column 4 is installed in the cavity. The first frame bar 1, the second frame bar 2, and the connecting column 4 are fixedly welded to each other. The cavity provides a welding space for the connecting column 4, so that the first frame bar 1, the second frame bar 2, and the connecting column 4 can form a rigid plane frame 9 through multi-point welding. This structure utilizes the profiling accuracy of the profiles to ensure the assembly reference.

[0035] Relieving holes 22 for the first fastener 6 and the second fastener 5 to pass through are respectively arranged on the profiling head 21 and the frame body 3, and the hole diameters and positions correspond to the first fixing hole 404 and the second fixing hole 414. The arrangement of the relieving holes 22 ensures the accurate path of the screw passing through, avoids blind installation deviation, and at the same time makes the screw head sink into the profile surface to eliminate interference.

[0036] The frame body 3 is fixedly welded to the joint 41. During installation, the joint 41 is located in the inner hole of the frame body 3 and welded along the edge to ensure that the joint 41 and the frame body 3 form an integrated structure for direct load transfer.

[0037] A chamfer 405 is provided on an edge in the vertical direction of the connecting column 4, and the chamfer 405 does not completely penetrate along the vertical direction. During installation, the chamfer 405 closely adheres to the second frame bar 2 and is supported on the end face of the second frame bar 2 for positioning the connecting column 4.

[0038] The installation steps of the assembled cabinet are as follows:

[0039] First, before assembly, the first frame bar 1 and the second frame bar 2 are mutually fitted through the profiling heads 21 at the ends to form a rectangular plane frame 9. At this time, the profiling heads 21 of the first frame bar 1 and the second frame bar 2 cooperate to form a cavity; the connecting column 4 is embedded in the cavity, and its chamfer 405 edge closely adheres to the inner wall of the second frame bar 2 for positioning, and the connecting column 4, the first frame bar 1, and the second frame bar 2 are fixedly welded to ensure that the stepped countersunk screw hole of the connecting column 4 is concentric with the relieving hole 22 where the profiling head 21 is joined. At the same time, the joint 41 is fixedly welded in the inner hole at the end of each frame body 3, so that the tenon of the joint 41 faces outward, and the threaded blind hole of the joint 41 is aligned with the relieving hole 22 at the end of the frame body 3.

[0040] During assembly, align the pre-installed connector 41 on the frame body 3 with the connecting column 4 of the planar frame 9 for two-way insertion. First, insert the second tenon 411 of the connector 41 into the first mortise hole 403 of the connecting column 4, and at the same time insert the first tenon 401 of the connecting column 4 into the second mortise hole 413 of the connector 41. At this time, the second through hole 412 of the connector 41 is automatically aligned with the stepped counterbore of the connecting column 4, and the first through hole 402 of the connecting column 4 is also aligned with the internal threaded blind hole of the connector 41. Then, insert a countersunk conical screw through the stepped counterbore of the connecting column 4 and screw it into the internal threaded through hole of the connector 41 until the head of the countersunk conical screw is completely sunk; at the same time, insert an internal hexagon set screw through the internal threaded blind hole of the connector 41 and screw it into the first through hole 402 of the connecting column 4 until it is tightened. Finally, check all connection points to ensure that both two-way screws are screwed to the bottom without looseness, thus completing the assembly of the cabinet.

Claims

1. A tenon-mortise fastening type convenient assembling cabinet, characterized in that: It includes a planar frame (9) and a housing (3), and the planar frame (9) is connected to the housing (3) through a mortise and tenon assembly; the mortise and tenon assembly includes a connecting column (4), a joint (41), a first fastener (6) and a second fastener (5). The connecting column (4) and the joint (41) are respectively fixed inside the ends of the planar frame (9) and the housing (3); on the docking surface of the connecting column (4), there are a first tenon (401) and a first mortise hole (403). A first through hole (402) perpendicular to the axis of the first tenon (401) is opened on the first tenon (401), and a first fixing hole (404) vertically passing through the first mortise hole (403) is also opened on the connecting column (4); on the docking surface of the joint (41), there are a second tenon (411) and a second mortise hole (413). A second through hole (412) perpendicular to the axis of the second tenon (411) is opened on the second tenon (411), and a second fixing hole (414) vertically passing through the second mortise hole (413) is also opened on the joint (41); when the planar frame (9) and the housing (3) are spliced, the first tenon (401) is inserted into the second mortise hole (413) and the second tenon (411) is inserted into the first mortise hole (403). Moreover, the first fastener (6) penetrates from the first fixing hole (404) into the second through hole (412) to form a fixed connection with the second tenon (411), and the second fastener (5) penetrates from the second fixing hole (414) into the first through hole (402) to form a fixed connection with the first tenon (401).

2. The mortise and tenon fastening type convenient assembled cabinet according to claim 1, wherein: There are multiple first tenons (401) and the second mortise holes (413) docked with them. The multiple first tenons (401) are arranged at linear intervals; there are multiple second tenons (411) and the first mortise holes (403) docked with them. The multiple second tenons (411) are arranged at linear intervals.

3. The tenon-mortise fastening type convenient assembled cabinet according to claim 1 or 2, wherein: The first fixing hole (404) is a stepped countersunk screw hole, and the first fastener (6) is a tapered countersunk screw. The tapered countersunk screw forms a threaded connection with the stepped countersunk screw hole and the second through hole (412) respectively.

4. The tenon-mortise fastening type convenient assembling cabinet according to claim 1 or 2, characterized in that: The second fixing hole (414) is an internal thread blind hole, and the second fastener (5) is an internal hexagonal set screw. The internal hexagonal set screw forms a threaded connection with the internal thread blind hole and the first through hole (402) respectively.

5. The tenon-mortise fastening type convenient assembled cabinet according to claim 1 or 2, characterized in that: The planar frame (9) includes a first frame bar (1) and a second frame bar (2) arranged perpendicular to each other. The ends of the second frame bar (2) and the housing (3) have mating profiling heads (21). A cavity is formed between the profiling head (21) and the end face of the first frame bar (1), and the connecting column (4) is installed in the cavity.

6. The mortise and tenon fastening type convenient assembled cabinet according to claim 5, wherein: The profiling head (21) and the housing (3) are respectively provided with relief holes (22) for the first fastener (6) and the second fastener (5) to pass through.

7. The tenon-mortise fastening type convenient assembled cabinet according to claim 5, characterized in that: The first frame bar (1), the second frame bar (2) and the connecting column (4) are welded and fixed to each other.

8. The tenon-mortise fastening type convenient assembling cabinet according to claim 5, wherein: The housing (3) and the joint (41) are welded and fixed.

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