Reinforced cabinet convenient to disassemble and assemble

Abstract

The reinforced cabinet convenient to disassemble and assemble comprises a shell, auxiliary cavities are formed in the two sides in the shell, a wiring cavity is formed in the middle of the shell, a reinforcing structure for enhancing the splicing stability of the shell in strong wind weather is arranged in each auxiliary cavity, and the end of each reinforcing structure penetrates through the outer wall of the corresponding side of the shell to be connected with a baffle. According to the reinforced cabinet convenient to disassemble and assemble, a resisting arm of a lever presses a third oil cylinder to contract, hydraulic oil in the third oil cylinder flows into a movable groove through a liquid path groove, a clamping block is pushed to move out to be clamped with a clamping groove, meanwhile, clamping of an insertion block and an insertion groove further consolidates connection of a shell, and due to the unique structural design, the reliability of the cabinet is improved. The risk that the shell is separated from clamping in severe weather is effectively avoided, and the overall firmness of the cabinet is remarkably enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment, and particularly to a cabinet that is strengthened and facilitates disassembly and assembly. Background Art

[0002] In the electrical field, cabinets are an essential and indispensable part. Their main function is to provide a carrier for the installation, fixation, and protection of electrical equipment and components. Cabinets can effectively prevent interference from the external environment to the equipment, such as waterproofing, dustproofing, and electromagnetic interference prevention. At the same time, they can ensure the safe operation of the equipment and avoid dangers such as electric shock caused by the exposure of the equipment. In addition, the reasonable layout and wiring design inside the cabinet help to improve the operation efficiency and maintenance convenience of the equipment. Cabinets are widely used in scenarios such as power systems, communication base stations, data centers, and industrial automation production lines. Most of the existing cabinets adopt an integrated production method. This design has many inconveniences during transportation and loading / unloading. Due to its fixed volume and size, it cannot be adjusted according to actual needs. For example, in some places with limited space, an integrated cabinet may not be able to enter or be installed smoothly. In addition, the design of the integrated cabinet lacks flexibility and cannot flexibly adjust the volume and internal space of the cabinet according to the needs of wiring and equipment installation. This to a certain extent limits the practicality of the cabinet, especially in scenarios where the equipment layout needs to be frequently adjusted or functions need to be expanded.

[0003] When installed outdoors, the integrated cabinet also faces the problem of heat dissipation. Due to the fixed structure of the cabinet, it cannot be optimized and adjusted according to changes in the external environment, and it is easy to cause the accumulation and rise of the temperature inside the cabinet. Especially in the case of direct sunlight, the temperature of the cabinet may rise rapidly, which will have an adverse impact on the normal operation of the internal circuits and equipment. This increase in temperature may lead to a decline in equipment performance and even cause failures.

[0004] In summary, the existing cabinets have many deficiencies in terms of transportation, installation, flexibility, and heat dissipation performance, and urgent improvements are needed to meet the growing demands in the electrical field. Summary of the Invention

[0005] The technical solution of the present invention aims at the technical problem that the existing technical solutions are too single, and provides a solution for a cabinet that is strengthened and facilitates disassembly and assembly, which is significantly different from the existing technologies, so as to solve the problems raised in the above background art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cabinet that is strengthened and easy to disassemble and assemble, comprising a shell, auxiliary cavities are opened on both sides of the shell, and a wiring cavity is opened in the middle, each of the auxiliary cavities is provided with a reinforcement structure that enhances the stability of the shell splicing in windy weather, and the ends of the reinforcement structure pass through the outer wall of the corresponding side of the shell and are connected to a baffle, and a spring telescopic rod for buffering is connected between each baffle and the outer wall of the shell, a heat preservation and heat dissipation structure for heat preservation is arranged in each of the auxiliary cavities and staggered with the reinforcement structure, a chassis for fixing to the ground is installed at the bottom of the shell, and a top plate for shielding from wind and rain is installed at the top of the shell.

[0007] Preferably, the shell is configured to be multiple and stacked up and down and snap-fitted, with the bottom of the bottom shell being fixed to the chassis, and the top of the top shell being installed to the top plate.

[0008] Preferably, the reinforcement structure includes a trigger part and a reinforcement part, the trigger part includes a fulcrum, a lever, a first oil cylinder, a hose, a second oil cylinder, a wind plate, and a return spring, each of the auxiliary chambers is rotatably connected to a fulcrum on both sides, and each fulcrum is rotatably connected to a lever, and the power arm end of each lever close to the center line of the auxiliary chamber is connected to the extended end of the first oil cylinder, the cylinder body end of the first oil cylinder is installed in the middle area on both sides of the shell, each of the first oil cylinders is connected to a hose, and each hose end is connected to the cylinder body end of a second oil cylinder, and the cylinder body end of the second oil cylinder is installed on the baffle, each of the second oil cylinder extended end is connected to a wind plate, and a return spring is connected between each wind plate and the baffle.

[0009] Preferably, the reinforcement part includes a third oil cylinder, a liquid path groove, an insert block, a slot, a movable groove, a card block, and a slot. The upper and lower ends of each auxiliary cavity away from the wiring cavity are respectively connected to a third oil cylinder, and the protruding end of each third oil cylinder is connected to the corresponding lever resistance arm end, and the cylinder body of each third oil cylinder is connected to a liquid path groove, each of which is opened at the top and bottom of the shell, and each of the shells is provided with an insert block and a slot on both sides of the top and bottom, and each insert block is provided with a movable groove running through both sides thereof, and each movable groove is slidably connected to a card block at both ends, and each end of the card block is engaged in the corresponding slot, and the slots are opened on both sides of the inner wall of the slot.

[0010] Preferably, the two plug blocks at the top of the shell are arranged close to the center line of the shell, and the two slots at the top of the shell are arranged away from the center line of the shell, and the plug blocks and slots at the bottom of the shell are arranged oppositely.

[0011] Preferably, the heat preservation and heat dissipation structure includes a heat preservation board, an air inlet groove, an air outlet groove, a shape memory alloy spring, and heat dissipation fins. A heat preservation board is provided in each auxiliary cavity, and a number of shape memory alloy springs are equidistantly arranged on each heat preservation board. The end of each shape memory alloy spring is connected to the inner wall of the auxiliary cavity and fits with the heat dissipation fins. The heat dissipation fins are equidistantly arranged between the auxiliary cavity and the wiring cavity. An air inlet groove is provided on each of the two sides near the top of the outer wall of the housing, and the air inlet groove communicates with the top of the auxiliary cavity. An air outlet groove is provided on each of the two sides near the bottom of the outer wall of the housing, and the air outlet groove communicates with the bottom of the auxiliary cavity.

[0012] Preferably, the heat preservation board is composed of a sponge layer and a plate-shaped mesh frame. The sponge layer is arranged on the side away from the wiring cavity in the auxiliary cavity, and the upper and lower ends of the sponge layer are in contact with the air inlet groove and the air outlet groove.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: for this cabinet that is strengthened and convenient for disassembly and assembly, firstly, due to the ingenious design of its reinforcement structure, the cabinet can effectively enhance its stability in strong wind weather. When the wind blows the wind plate into the baffle, a series of linkage mechanisms will be triggered: the hydraulic oil in the second oil cylinder is pressed into the first oil cylinder through the hose, prompting the first oil cylinder to extend and push the power arm of the lever to rotate around the fulcrum; the resistance arm of the lever presses the third oil cylinder to contract, and the hydraulic oil in the third oil cylinder flows into the movable groove through the liquid passage groove, pushing the latch out to engage with the card slot. At the same time, the engagement of the plug and the plug slot further consolidates the connection of the housing. This unique structural design not only effectively avoids the risk of the housing disengaging from the clamping in bad weather but also significantly enhances the overall firmness of the cabinet. Secondly, the setting of the heat preservation and heat dissipation structure realizes the dual functions of heat dissipation and protection. The heat preservation board is composed of a sponge layer and a plate-shaped mesh frame. During the heat dissipation process, the heat dissipation fins transfer heat to the shape memory alloy spring, causing it to deform and push the plate-shaped mesh frame to squeeze the sponge layer. At this time, the sponge layer disengages from the occlusion of the air inlet groove and the air outlet groove, allowing external air to enter the auxiliary cavity. After absorbing the heat of the heat dissipation fins, the air flows to the outside, thus achieving a good heat dissipation effect. This heat dissipation process not only effectively reduces the temperature inside the housing but also cleverly avoids dust from entering the wiring cavity, protecting the precision components inside the cabinet. Under normal conditions, the tiny pores inside the sponge are filled with air, and these pores serve as heat insulation units, which can effectively hinder heat conduction and achieve a good heat insulation effect; when the sponge is squeezed, the internal air is discharged, the pores become smaller or even closed, and the heat conduction speed increases, and the heat insulation effect decreases. This heat dissipation and heat insulation switching mechanism based on the state change of the sponge enables the cabinet to automatically adjust according to the internal temperature situation, ensuring both the heat dissipation requirement and achieving a good heat preservation effect. The split design of the housing, chassis, and top plate greatly improves the transportation and assembly convenience of the cabinet. This design enables the cabinet to be quickly snapped together according to usage requirements, facilitating disassembly and transportation, and significantly enhancing its applicability and practicality in different scenarios. Meanwhile, the settings of the baffle and the spring telescopic rod provide additional protection for the cabinet. When the cabinet is subjected to external impact, the spring telescopic rod can effectively buffer the impact force, playing a certain role in blocking and protecting. The shielding functions of the top plate and the baffle also play an important role under different weather conditions: on rainy days, it can effectively prevent rainwater from eroding the cabinet; on sunny days, it can block direct sunlight and avoid the excessive temperature of the housing due to sunlight irradiation. The inclined settings at both ends of the baffle further optimize the heat dissipation performance of the cabinet, facilitating air to pass through the gap between the baffle and the housing and taking away the heat, thus achieving all-round protection and optimization. Brief Description of the Drawings

[0014] Figure 1 It is a front view sectional structure schematic diagram of the first oil cylinder extending stroke state of the present invention; Figure 2 For the present invention Figure 1 The enlarged structure schematic diagram at A in it; Figure 3 It is a front view sectional structure schematic diagram of the first oil cylinder retracting stroke state of the present invention; Figure 4 It is a front view sectional structure schematic diagram of the heat preservation board in the normal state of the present invention; Figure 5 It is a front view sectional structure schematic diagram of the heat preservation board in the extrusion state of the present invention; Figure 6 It is a front view structure schematic diagram of the present invention.

[0015] In the figure: 1, housing; 2, auxiliary cavity; 3, wiring cavity; 4, reinforcement structure; 401, fulcrum; 402, lever; 403, first oil cylinder; 404, hose; 405, second oil cylinder; 406, air plate; 407, return spring; 408, third oil cylinder; 409, liquid path groove; 410, insert block; 411, slot; 412, movable groove; 413, clamping block; 414, clamping groove; 5, baffle; 6, spring telescopic rod; 7, heat preservation and heat dissipation structure; 701, heat preservation board; 702, air inlet groove; 703, air outlet groove; 704, shape memory alloy spring; 705, heat dissipation fin; 8, chassis; 9, top plate. Detailed Embodiment

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figures 1-6 The present invention provides a technical solution: a cabinet that is strengthened and easy to disassemble and assemble, including a shell 1, an auxiliary cavity 2, a wiring cavity 3, a reinforcement structure 4, a fulcrum 401, a lever 402, a first oil cylinder 403, a hose 404, a second oil cylinder 405, a wind plate 406, a reset spring 407, a third oil cylinder 408, a liquid path groove 409, an insert block 410, a slot 411, a movable slot 412, a block 413, a slot 414, a baffle 5, a spring telescopic rod 6, a heat preservation and heat dissipation structure 7, a heat preservation plate 701, an air inlet slot 702, an air outlet slot 703, a memory alloy spring 704, and a heat dissipation fin Sheet 705, chassis 8, top plate 9, auxiliary chambers 2 are opened on both sides of the shell 1, and a wiring chamber 3 is opened in the middle, each auxiliary chamber 2 is provided with a reinforcement structure 4 for strengthening the splicing and stability of the shell 1 in windy weather, and the ends of the reinforcement structure 4 pass through the outer wall of the corresponding side of the shell 1 and are connected with a baffle 5, and a spring telescopic rod 6 for buffering is connected between each baffle 5 and the outer wall of the shell 1, a heat preservation and heat dissipation structure 7 for heat preservation is staggered with the reinforcement structure 4 in each auxiliary chamber 2, a chassis 8 for fixing to the ground is installed at the bottom of the shell 1, and a top plate 9 for sheltering from wind and rain is installed on the top of the shell 1.

[0018] The housing 1 is configured to be stacked up and down and mounted in a plurality of ways, wherein the bottom of the bottom housing 1 is fixed to the bottom plate 8 , and the top of the top housing 1 is mounted to the top plate 9 .

[0019] The reinforcement structure 4 includes a trigger part and a reinforcement part. The trigger part includes a fulcrum 401, a lever 402, a first oil cylinder 403, a hose 404, a second oil cylinder 405, a wind plate 406, and a return spring 407. Each auxiliary cavity 2 is rotatably connected to the fulcrum 401 on both sides, and each fulcrum 401 is rotatably connected to a lever 402, and each lever 402 is connected to the protruding end of the first oil cylinder 403 at the power arm end close to the center line of the auxiliary cavity 2, and the cylinder end of the first oil cylinder 403 is installed in the middle area on both sides of the shell 1, and each first oil cylinder 403 is connected to a hose 404, and each end of the hose 404 is connected to the cylinder end of a second oil cylinder 405, and the cylinder end of the second oil cylinder 405 is installed on the baffle 5, and each protruding end of the second oil cylinder 405 is connected to the wind plate 406, and a return spring 407 is connected between each wind plate 406 and the baffle 5.

[0020] The strengthening part includes a third oil cylinder 408, a liquid passage groove 409, an inserting block 410, a slot 411, a movable groove 412, a clamping block 413, and a clamping groove 414. At the upper and lower ends of each auxiliary cavity 2 on the side far from the wiring cavity 3, a third oil cylinder 408 is connected. The extending end of each third oil cylinder 408 is connected to the resistance arm end of the corresponding lever 402. The cylinder body of each third oil cylinder 408 is communicated with a liquid passage groove 409. Each liquid passage groove 409 is opened at the top and bottom of the housing 1. Inserting blocks 410 and slots 411 are provided on both sides of the top and bottom of each housing 1. A movable groove 412 penetrating both sides is provided in each inserting block 410. A clamping block 413 is slidably connected to each end of each movable groove 412. The end of each clamping block 413 is clamped in the corresponding clamping groove 414, and the clamping groove 414 is opened on both sides of the inner wall of the slot 411.

[0021] The two inserting blocks 410 on the top of the housing 1 are arranged close to the center line of the housing 1, the two slots 411 on the top of the housing 1 are arranged away from the center line of the housing 1, and the inserting blocks 410 and slots 411 at the bottom of the housing 1 are arranged in the opposite way.

[0022] The heat preservation and heat dissipation structure 7 includes a heat preservation board 701, an air inlet groove 702, an air outlet groove 703, a shape memory alloy spring 704, and heat dissipation fins 705. A heat preservation board 701 is provided in each auxiliary cavity 2. A number of shape memory alloy springs 704 are equidistantly arranged on each heat preservation board 701. The end of each shape memory alloy spring 704 is connected to the inner wall of the auxiliary cavity 2 and is in contact with the heat dissipation fins 705. The heat dissipation fins 705 are equidistantly arranged between the auxiliary cavity 2 and the wiring cavity 3. An air inlet groove 702 is provided on both sides of the outer wall of the housing 1 near the top, and the air inlet groove 702 is communicated with the top of the auxiliary cavity 2. An air outlet groove 703 is provided on both sides of the outer wall of the housing 1 near the bottom, and the air outlet groove 703 is communicated with the bottom of the auxiliary cavity 2.

[0023] The heat preservation board 701 is composed of a sponge layer and a plate-shaped mesh frame. The sponge layer is arranged on the side of the auxiliary cavity 2 far from the wiring cavity 3, and the upper and lower ends of the sponge layer are in contact with the air inlet groove 702 and the air outlet groove 703.

[0024] Normal state: There are a large number of tiny pores inside the sponge. These pores are filled with air, and air is a poor conductor of heat. The heat transfer speed in the air is very slow. Therefore, when the sponge is in the normal state, these pores filled with air will form heat insulation units one by one, hindering the conduction of heat, and thus achieving a good heat insulation effect.

[0025] Compressed state: When the sponge is compressed, the air inside is discharged, the pores become smaller or even partially closed. At this time, the air content inside the sponge decreases, and heat is more likely to be conducted through the fiber structure of the sponge, and the heat insulation effect decreases significantly.

[0026] Working principle: In the normal state, the sponge layer in the heat preservation board 701 is filled with air, and these air-filled pores form heat insulation units, which hinder heat conduction and have a good heat insulation effect, keeping the temperature inside the housing 1 relatively stable. At the same time, the shielding functions of the baffle 5 and the top plate 9 play an important role under different weather conditions: on rainy days, it can effectively prevent rainwater from eroding the cabinet; on sunny days, it can block direct sunlight and prevent the temperature of the housing 1 from being too high due to sunlight irradiation. The inclined settings at both ends of the baffle 5 further optimize the heat dissipation performance of the cabinet, facilitating air to pass through the gap between the baffle 5 and the housing 1 and taking away the heat.

[0027] When strong winds come, the wind blows the wind plate 406 into the baffle 5. The movement of the wind plate 406 will press the hydraulic oil in the second oil cylinder 405, causing it to flow into the first oil cylinder 403 through the hose 404. The first oil cylinder 403 extends under the action of the hydraulic oil, pushing the power arm of the lever 402 to rotate around the fulcrum 401. The resistance arm of the lever 402 presses the third oil cylinder 408 to contract. The hydraulic oil in the third oil cylinder 408 flows into the movable groove 412 through the liquid path groove 409, pushing the latch 413 out and engaging it in the card slot 414. At the same time, the plug 410 and the slot 411 are also in an engaged state. Through the engagement of the plug 410 and the slot 411 and the engagement of the latch 413 and the card slot 414, the connection of the housing 1 is further tightened and strengthened, effectively avoiding the risk of the two being disengaged under bad weather. When the wind force decreases or disappears, the return spring 407 will reset the wind plate 406, and the reinforcement structure will also return to its initial state.

[0028] When the temperature inside the housing 1 is too high, the heat dissipation fins 705 will transfer the heat to the shape memory alloy spring 704. The shape memory alloy spring 704 deforms when heated, pushing the plate-shaped mesh frame (a part of the heat preservation board 701) to squeeze the sponge layer. After the sponge layer is squeezed, the internal air is discharged, the pores become smaller or even partially closed, the heat insulation effect decreases, and at the same time, the sponge layer disengages from the shielding of the air inlet groove 702 and the air outlet groove 703. At this time, the outside air can enter the auxiliary cavity 2 through the air inlet groove 702, absorb the heat transferred by the heat dissipation fins 705, and then flow to the outside through the air outlet groove 703, thus achieving the heat dissipation effect. This heat dissipation process not only effectively reduces the temperature inside the housing 1, but also cleverly avoids dust from entering the wiring cavity 3, protecting the precision components inside the cabinet.

[0029] In addition, the split design of the housing 1, the chassis 8, and the top plate 9 makes the cabinet easy to disassemble and transport. According to the usage requirements, it can be quickly snapped together as a whole through the reinforcement structure 4, greatly improving the practicality of the cabinet. The setting of the baffle 5 and the spring telescopic rod 6 provides additional protection for the cabinet. When the cabinet is impacted by external forces, the spring telescopic rod 6 can effectively buffer the impact force and play a certain role in blocking and protecting. This is the working principle of the cabinet that is strengthened and easy to disassemble and assemble.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cabinet that is strengthened for easy disassembly and assembly, including a housing (1), characterized in that: On both sides inside the housing (1), auxiliary cavities (2) are provided, and a wiring cavity (3) is provided in the middle. In each of the auxiliary cavities (2), a reinforcement structure (4) for enhancing the splicing stability of the housing (1) in strong wind weather is provided. The end of the reinforcement structure (4) penetrates the outer wall of the housing (1) and is connected to a baffle (5). A spring telescopic rod (6) is connected between the baffle (5) and the outer wall of the housing (1) for buffering external forces. In each of the auxiliary cavities (2), a heat preservation and heat dissipation structure (7) for heat preservation is provided at a position offset from the reinforcement structure (4) for adjusting the internal temperature of the housing (1). A chassis (8) is installed at the bottom of the housing (1) for fixing to the ground, and a top plate (9) is installed at the top of the housing (1) for shielding against wind and rain.

2. The strengthened cabinet facilitating disassembly and assembly according to claim 1, wherein: The housing (1) is provided in multiple layers and is stacked and snap-fitted for installation. The bottom of the lowermost housing (1) is fixed to the chassis (8), and the top of the uppermost housing (1) is installed with the top plate (9).

3. The cabinet according to claim 1, which is strengthened and facilitates disassembly and assembly, is characterized in that: The reinforcement structure (4) includes a trigger part and a strengthening part. The trigger part includes a fulcrum (401), a lever (402), a first oil cylinder (403), a hose (404), a second oil cylinder (405), a wind plate (406), and a return spring (407). On the upper and lower sides of each of the auxiliary cavities (2), a fulcrum (401) is rotatably connected, and a lever (402) is rotatably connected to each fulcrum (401). The extending end of a first oil cylinder (403) is connected to the power arm end of each lever (402) close to the middle line of the auxiliary cavity (2). The cylinder body end of the first oil cylinder (403) is installed in the middle area on both sides of the housing (1). A hose (404) is connected to each of the first oil cylinders (403), and the end of each hose (404) is connected to the cylinder body end of a second oil cylinder (405). The cylinder body end of the second oil cylinder (405) is installed on the baffle (5). The extending end of each second oil cylinder (405) is connected to a wind plate (406), and a return spring (407) is connected between each wind plate (406) and the baffle (5).

4. The strengthened cabinet facilitating disassembly and assembly according to claim 3, characterized in that: The reinforcing part includes a third oil cylinder (408), a liquid passage groove (409), an insertion block (410), a slot (411), a movable groove (412), a clamping block (413), and a clamping groove (414). At the upper and lower ends of each auxiliary cavity (2) on the side away from the wiring cavity (3), a third oil cylinder (408) is connected. The extending end of each third oil cylinder (408) is connected to the resistance arm end of the corresponding lever (402). The cylinder body of each third oil cylinder (408) is communicated with a liquid passage groove (409). Each liquid passage groove (409) is opened at the top and bottom of the housing (1). Insertion blocks (410) and slots (411) are provided on both sides of the top and bottom of each housing (1). A movable groove (412) penetrating both sides is provided in each insertion block (410). A clamping block (413) is slidably connected to each end of each movable groove (412). The end of each clamping block (413) is clamped in the corresponding clamping groove (414), and the clamping groove (414) is opened on both sides of the inner wall of the slot (411).

5. The cabinet according to claim 4, which is enhanced for easy disassembly and assembly, is characterized in that: The insertion block (410) at the top of the housing (1) is arranged close to the center line of the housing (1), and the slot (411) is arranged away from the center line of the housing (1); the insertion block (410) and the slot (411) at the bottom of the housing (1) are arranged in the opposite way to the top.

6. The cabinet according to claim 1, which is strengthened and convenient for disassembly and assembly, is characterized in that: The heat preservation and heat dissipation structure (7) includes a heat preservation board (701), an air inlet groove (702), an air outlet groove (703), a shape memory alloy spring (704), and heat dissipation fins (705). A heat preservation board (701) is provided in each auxiliary cavity (2). A number of shape memory alloy springs (704) are equidistantly arranged on each heat preservation board (701). The end of each shape memory alloy spring (704) is connected to the inner wall of the auxiliary cavity (2) and is in contact with the heat dissipation fins (705). The heat dissipation fins (705) are equidistantly arranged between the auxiliary cavity (2) and the wiring cavity (3). An air inlet groove (702) is provided on both sides of the outer wall of the housing (1) close to the top, and the air inlet groove (702) is communicated with the top of the auxiliary cavity (2). An air outlet groove (703) is provided on both sides of the outer wall of the housing (1) close to the bottom, and the air outlet groove (703) is communicated with the bottom of the auxiliary cavity (2).

7. The cabinet according to claim 6, which is enhanced for easy disassembly and assembly, is characterized in that: The heat preservation board (701) is composed of a sponge layer and a plate-shaped mesh frame. The sponge layer is arranged on the side of the auxiliary cavity (2) away from the wiring cavity (3), and the upper and lower ends of the sponge layer are in contact with the air inlet groove (702) and the air outlet groove (703).

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