Modular assembled distribution box body

Abstract

This invention belongs to the field of distribution box technology and discloses a modular assembled distribution box body, including a top plate, side plates abutting on both sides of the top plate, a back plate fixed to the top plate by a triangular plate, and a bottom plate fixed to the bottom of the back plate. Adjacent plates are interlocked by concave and convex side walls. By setting up sleeves, locking posts, intermediate sleeves and annular locking blocks, a stable frame is formed when expanding the box. Compared with the comparative patent, which cannot be expanded and adjusted, this device uses four sleeves, in conjunction with the intermediate sleeve and the center rod for three-layer sleeve installation, which enhances the continuity of splicing and avoids stress concentration at the connection. Several locking posts are equidistantly connected to the sleeves and the intermediate sleeve in a toothed shape, which effectively prevents the box from shaking. In addition, the box body plates can be disassembled and replaced, modularly installed, and the side plates are reserved with standard interfaces to facilitate the addition of distribution units in the future. This solves the problems of complex installation, difficult maintenance and poor expandability of traditional boxes.

Description

Technical Field

[0001] This invention belongs to the field of distribution box technology, specifically a modular assembled distribution box enclosure. Background Technology

[0002] Distribution boxes mainly receive and distribute electrical energy from the upper-level distribution cabinet, and control, protect, monitor and meter the power lines. Traditional distribution boxes need to be transported as a whole, which is bulky, costly, and easily damaged and deformed, and occupies warehouse space. In contrast, modularly assembled distribution boxes can be packaged in flat and stackable modules, which greatly increases the loading capacity and reduces logistics costs by more than 50%. They can be quickly assembled during use and can be partially repaired and replaced in case of failure. Therefore, modularly assembled boxes are being used more and more.

[0003] The prior art document, CN120933804A, discloses a three-dimensional layered modular distribution box with a rapid assembly structure, belonging to the field of distribution box technology. This three-dimensional layered modular distribution box with a rapid assembly structure includes an inner liner assembly. An assembly frame is installed on the outside of the inner liner assembly. An outer shell assembly is installed on the outside of the assembly frame. An isolation cabinet door is installed at the end of the assembly frame near the opening of the inner liner assembly. A rapid installation assembly is installed at the end of the inner liner assembly away from the isolation cabinet door. A component mounting bracket is fixedly connected to the inside of the inner liner assembly. Through the three-layer fully modular structure of the inner liner, frame, and outer shell, the box can be prefabricated in the factory. On-site assembly can be completed simply by inserting and pressing. The average assembly time is significantly shortened compared to the traditional method. This achieves rapid, modular, and tool-minimized operation of the entire process of the distribution box, from wall installation and box structure assembly to internal component adjustment, significantly improving installation efficiency and flexibility. While the aforementioned patents achieve the goal of modular assembly of distribution boxes, they cannot effectively solve the problem of the box's own expandability and adjustment. This limitation significantly increases the cost of modifying distribution boxes when facing technological advancements or increased loads, placing an additional economic burden on users. At the same time, due to the potential instability of the connection points in the modular design, especially under high-intensity working environments, loosening or deformation of the connections can affect the safety and reliability of the entire power distribution system. In addition, low heat dissipation efficiency is also a significant drawback. Although individual components in the modular structure can be replaced and upgraded independently, heat may still not be effectively guided and dissipated, which can not only cause equipment overheating, thus affecting performance and lifespan, but may also cause electrical components to malfunction due to overheating, and in severe cases, may even lead to safety hazards. Summary of the Invention

[0004] The purpose of this invention is to provide a modular assembled distribution box enclosure that can form a stable frame and provide uniform and efficient heat dissipation, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a modular assembled distribution box enclosure, including a top plate, side plates abutting against both sides of the top plate, a back plate fixedly connected to the top plate by a triangular plate, a bottom plate fixedly connected to the bottom of the back plate, and adjacent plates being interlocked with each other by concave and convex sidewalls, further comprising: The reinforced support mechanism has four sets, which are located on both sides of the top plate and the bottom plate respectively; A fixed-point heat dissipation mechanism, which is connected to the back plate; The reinforced support mechanism includes sleeves fixed to both sides of the top and bottom plates. A central rod is movably fitted into the inner cavity of each of the four sleeves. Both ends of each sleeve are slidably engaged with an intermediate sleeve via grooves. All adjacent plates are engaged via concave and convex sidewalls, ensuring a secure connection between the panels. Four sets of reinforced support mechanisms are located on both sides of the top and bottom plates, consisting of sleeves and movable central rods, providing additional structural support and allowing for flexible adjustment via the intermediate sleeves. The fixed-point heat dissipation mechanism is directly connected to the back plate, effectively dissipating internal heat and ensuring the safety and stability of the distribution box during high-load operation.

[0006] Preferably, the reinforced support mechanism further includes several sliding grooves equidistantly opened on both sides of the intermediate sleeve. The inner walls of the sliding grooves are all slidably connected to locking posts by sliders. The ends of the locking posts are engaged with the inner cavity of the sleeve by circular grooves. After the side plates are disassembled, the next step is to select appropriate unit module plates according to the number of new electrical components. By rationally planning the number of bottom plates, back plates, and top plates, the width of the enclosure can be effectively extended, and the installation positions of all components can be ensured to be reasonable and safe. During the installation process, attention should be paid to ensure that the edges of the side plates are perfectly aligned with the annular locking blocks to achieve a stable connection and avoid mechanical failures caused by asymmetry or loosening.

[0007] Preferably, each of the four intermediate sleeves has a protruding plate fixedly attached to its sidewall, and the intermediate sleeve is slidably engaged with the inner cavity of the sleeve through the protruding plate.

[0008] Preferably, all four central rods movably penetrate the inner cavity of the intermediate sleeve, and the outer walls of the central rods abut against the ends of the locking pins. The ends of the four sleeves are slidably engaged with annular locking blocks, and the ends of the four annular locking blocks are fixed to the four corners of the side plate. During the expansion process, ensuring precise engagement between the intermediate sleeve and the ends of the four sleeves is crucial. At this stage, the locking pins will retract inward, which will not hinder the insertion of the intermediate sleeve but will instead simplify subsequent operations. After the central rods are inserted into the intermediate sleeve, the locking pins are gradually engaged in the inner cavity of the sleeves by the sliding mechanism of the slider along the groove, thus completing the limiting and fixing. At this time, combined with the guiding effect of the convex plate, not only is the engagement strength improved, but any possible displacement is also effectively prevented, thereby laying the foundation for expanding the capacity.

[0009] Preferably, each of the four annular blocks has a wedge block elastically slidably connected to its sidewall, and the ends of the wedge blocks are engaged with the inner cavity of the sleeve through grooves, and each wedge block has an inclined groove in the middle.

[0010] Preferably, each of the four wedges is slidably abutted against a push rod via a groove. The end of the push rod passes through the side plate and is fixedly connected to a pressing plate, which is elastically slidably connected to the edge of the side plate. To achieve an efficient and convenient expansion process, the connecting part of the side plate needs to be addressed first. By pressing the pressing plates at the four corners, the push rod can be squeezed inward, thereby causing the wedge to move along its groove. The design of the wedge allows it to smoothly disengage from the inner cavity of the sleeve. Once all the wedges are completely disengaged, the side plates on both sides can be easily removed. This design not only simplifies the disassembly process but also reduces potential mechanical failures.

[0011] Preferably, the fixed-point heat dissipation mechanism includes a heat dissipation fan fixedly penetrating through the side wall of the back plate, and a busbar is fixedly connected to the inner side of the back plate corresponding to the position of the heat dissipation fan; while expanding each back plate, a heat dissipation fan can be added at the same time to ensure uniform heat dissipation in the newly added space. The introduction of the heat dissipation fan not only reduces the temperature of each electrical component, but also improves the stability of the overall equipment.

[0012] Preferably, a main ventilation pipe is fixedly inserted through both sides of the manifold, and a sealing ring is fixedly connected to the end of each main ventilation pipe. In order to further optimize the heat dissipation performance, the newly added main ventilation pipe is connected in series with the original main ventilation pipe through the sealing ring. This not only reduces the power consumption of each cooling fan, but also ensures the flow rate of the gas in the main ventilation pipe, thereby saving energy.

[0013] Preferably, the lower side of the manifold is fixedly connected to a branch pipe, and the branch pipe is evenly provided with several air inlets; in the back plate area, the branch pipe effectively absorbs the heat around the electrical components through the evenly distributed multiple air inlets, and guides it into the manifold for common exhaust. This design ensures that the heat dissipation effect of the entire system has high uniformity and efficiency, and significantly improves the service life and reliability of the equipment.

[0014] Preferably, several pairs of slot brackets are equidistantly fixed to the lower middle side of the back plate, and each pair of slot brackets is connected to a slot mounting plate. The slot mounting plates are all located near the air inlet. When expanding the enclosure, a section of slot mounting plate can be added as needed to connect with the original slot mounting plate, forming a uniform elongated structure. This design not only ensures the neat installation of electrical components, but also provides greater possibilities and flexibility for future expansion. By connecting the slot mounting plates with the slot brackets, various types of electrical components can be effectively supported to meet the needs of different application scenarios.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention, through the combination of structures such as sleeves, locking posts, intermediate sleeves, and annular locking blocks, facilitates the formation of a stable frame during the expansion and installation of the enclosure. Compared to the comparative patent, which lacks expandability and adjustment, this device enhances the continuity of the splicing by using four sleeves in conjunction with the intermediate sleeve and the central rod in a three-layer connection, avoiding stress concentration at the joints. Furthermore, several locking posts at equal intervals connect the sleeves and the intermediate sleeve in a toothed shape, effectively preventing enclosure swaying and resisting multi-directional shear stress, thus increasing support stability. In addition, the enclosure panels can be disassembled and replaced, allowing for modular installation. Standard interfaces are reserved on the side panels, facilitating the addition of power distribution units later. This solves the problems of complex installation, difficult maintenance, and poor expandability of traditional enclosures.

[0016] This invention facilitates the series connection of the internal heat dissipation system by incorporating a manifold, main ventilation duct, and branch pipes, thereby saving energy. The newly added main ventilation duct is tightly connected to the existing main ventilation duct via a sealing ring, completing the system's series connection and ensuring smooth airflow while reducing leakage. This improvement not only enhances the overall performance of the heat dissipation system but also allows for a reduction in the power of each cooling fan, achieving a more economical heat dissipation effect while maintaining the airflow velocity within the main ventilation duct. Furthermore, multiple air inlets are located near the mounting plates of electrical components, accurately absorbing heat from the vicinity of these components. This layout effectively captures heat generated around the electrical components and rapidly discharges it through the manifold, ensuring accurate heat absorption and achieving uniform and efficient heat dissipation. This systematic heat dissipation design not only improves the safety and reliability of the equipment but also extends the service life of electrical components, providing users with a more stable working environment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the rear view structure of the present invention; Figure 3 This is a front view structural diagram of the present invention; Figure 4 This is an exploded view of the device of the present invention; Figure 5 This is a schematic diagram showing the structural fit between the central rod and the intermediate sleeve of the present invention; Figure 6 For the present invention Figure 5 A magnified view of the structure at point A in the middle; Figure 7 This is a schematic diagram showing the structural fit between the intermediate sleeve and the retaining post of the present invention; Figure 8 This is a schematic diagram showing the structural fit between the push rod and the wedge block of the present invention; Figure 9 This is a schematic diagram showing the structural fit between the annular card block and the side plate of the present invention.

[0018] In the picture: 100. Top plate; 200. Bottom plate; 300. Side plate; 400. Back plate; 500. Reinforced support mechanism; 510. Sleeve; 520. Annular locking block; 530. Press plate; 540. Center rod; 550. Intermediate sleeve; 560. Locking post; 570. Sliding block; 580. Slide groove; 590. Push rod; 5100. Wedge block; 5110. Inclined groove; 5120. Protruding plate; 600. Fixed-point heat dissipation mechanism; 610. Cooling fan; 620. Combination plate; 630. Main ventilation pipe; 640. Sealing ring; 650. Branch pipe; 660. Air inlet; 670. Slot bracket; 680. Slot mounting plate. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1 to 9 As shown, the present invention provides a modular assembled distribution box enclosure, including a top plate 100, side plates 300 abutting against both sides of the top plate 100, a back plate 400 fixedly connected to the top plate 100 by a triangular plate, a bottom plate 200 fixedly connected to the bottom of the back plate 400, and adjacent plates being interlocked with each other by concave and convex sidewalls, and further including: The reinforced support mechanism 500 has four sets, which are located on both sides of the top plate 100 and the bottom plate 200 respectively. A fixed-point heat dissipation mechanism 600 is connected to the backplate 400; The reinforced support mechanism 500 includes sleeves 510 fixed to both sides of the top plate 100 and the bottom plate 200 respectively. The inner cavities of the four sleeves 510 are movably fitted with a central rod 540, and the two ends of the sleeves 510 are slidably engaged with intermediate sleeves 550 through column grooves.

[0021] The above-mentioned design employs a top plate 100 with side plates 300 abutting against both sides, connected to the back plate 400 via triangular plates to form a robust upper frame. The bottom plate 200 is fixedly connected to the bottom of the back plate 400, forming a complete bottom support. All adjacent plates are interlocked via concave and convex sidewalls, ensuring a secure connection between the panels. Four sets of reinforced support mechanisms 500 are located on both sides of the top plate 100 and the bottom plate 200, consisting of sleeves 510 and movable central rods 540, providing additional structural support and allowing for flexible adjustment via intermediate sleeves 550. The fixed-point heat dissipation mechanism 600 is directly connected to the back plate 400, effectively dissipating internal heat and ensuring the safety and stability of the distribution box under high load operation. Through these mutually cooperating components, the overall design achieves high strength and heat dissipation performance in a modular structure.

[0022] like Figures 4 to 9 As shown, the reinforced support mechanism 500 also includes several sliding grooves 580 equidistantly opened on both sides of the intermediate sleeve 550. The inner walls of each sliding groove 580 are slidably connected to locking posts 560 via sliders 570. The ends of the locking posts 560 are engaged with the inner cavity of the sleeve 510 via circular grooves. Each of the four intermediate sleeves 550 has a protruding plate 5120 fixedly connected to its side wall, and the intermediate sleeves 550 are slidably engaged with the inner cavity of the sleeve 510 via the protruding plates 5120. Four central rods 540 movably penetrate the inner cavity of the intermediate sleeves 550, and the outer walls of the central rods 540 abut against the ends of the locking posts 560. Each end of the cylinder 510 is slidably engaged with an annular locking block 520, and the ends of the four annular locking blocks 520 are fixed to the four corners of the side plate 300; each of the four annular locking blocks 520 is elastically slidably connected with a wedge block 5100, the ends of the wedge block 5100 are engaged with the inner cavity of the sleeve 510 through grooves, and each of the wedge blocks 5100 has a sloping groove 5110 in the middle; each of the four wedge blocks 5100 is slidably abutted against a push rod 590 through the sloping groove 5110, the end of the push rod 590 passes through the side plate 300 and is fixedly connected with a pressing plate 530, and the pressing plate 530 is elastically slidably connected to the edge of the side plate 300.

[0023] Using the above scheme, the process of expanding the distribution box is crucial, affecting not only equipment performance but also the safety and heat dissipation of electrical components. To achieve an efficient and simple expansion process, the connection of the side panels 300 needs to be addressed first. By pressing the four corner plates 530, the push rod 590 can be pressed inward, causing the wedges 5100 to move along their grooves 5110. The design of the wedges 5100 allows them to easily disengage from the inner cavity of the sleeve 510. Once all wedges 5100 are completely disengaged, the side panels 300 can be easily removed. This design not only simplifies the disassembly process but also reduces potential mechanical failures, laying the foundation for subsequent expansion work. After determining the disassembly of the side panels 300, the next step is to select appropriate unit module materials based on the number of new electrical components. By rationally planning the number of bottom plates 200, back plates 400, and top plates 100, the width of the enclosure can be effectively extended, ensuring that the installation positions of all components are reasonable and safe. During installation, it is crucial to ensure that the edge of the side plate 300 perfectly aligns with the annular locking block 520 to achieve a secure connection and prevent mechanical failures caused by asymmetry or loosening. During expansion, ensuring precise engagement between the intermediate sleeve 550 and the ends of the four sleeves 510 is paramount. At this stage, the locking post 560 retracts inward, which does not obstruct the insertion of the intermediate sleeve 550 but rather simplifies subsequent operations. After inserting the center rod 540 into the intermediate sleeve 550, the locking post 560 gradually engages with the inner cavity of the sleeve 510 via the sliding mechanism of the slider 570 along the groove 580, completing the limiting and fixing process. At this point, the guiding effect of the protruding plate 5120 not only enhances the strength of the engagement but also effectively prevents any possible displacement, thus laying the foundation for expanding to a larger capacity.

[0024] like Figure 3 , Figure 4 As shown, the fixed-point heat dissipation mechanism 600 includes a heat dissipation fan 610 fixedly penetrating the side wall of the back plate 400. A manifold 620 is fixedly connected to the inner side of the back plate 400 at the position corresponding to the heat dissipation fan 610. Main ventilation pipes 630 are fixedly penetrating both sides of the manifold 620, and sealing rings 640 are fixedly connected to the ends of the main ventilation pipes 630. Branch pipes 650 are fixedly connected to the lower side of the manifold 620, and several air inlets 660 are evenly opened on the branch pipes 650. Several pairs of slot brackets 670 are fixedly fixedly at equal intervals on the middle and lower side of the back plate 400. Each pair of slot brackets 670 is connected to a slot mounting plate 680. The slot mounting plates 680 are all set close to the air inlets 660.

[0025] The above solution allows for the simultaneous addition of a cooling fan 610 while expanding each backplate 400, ensuring uniform heat dissipation in the new space. The introduction of the cooling fan 610 not only reduces the temperature of various electrical components but also improves the overall stability of the equipment. To further optimize heat dissipation performance, the newly added main ventilation duct 630 is connected in series with the existing main ventilation duct 630 via a sealing ring 640. This not only reduces the power consumption of each cooling fan 610 but also ensures the airflow velocity within the main ventilation duct 630, thus saving energy. Within the backplate 400 area, branch pipes 650 effectively absorb heat from around the electrical components through multiple evenly distributed air inlets 660, and guide it to the manifold 620 for collective exhaust. This design ensures highly uniform and efficient heat dissipation throughout the system, significantly improving the equipment's lifespan and reliability. When expanding the enclosure, a mounting plate 680 can be added as needed, engaging with the existing mounting plate 680 to form a uniform elongated structure. This design not only ensures the neat installation of electrical components but also provides greater possibilities and flexibility for future expansion. The slot mounting plate 680 is snapped into place via the slot bracket 670, effectively supporting various types of electrical components to meet the needs of different application scenarios.

[0026] Working principle and usage process of this invention: When the enclosure needs to be expanded, first press the push plates 530 at the four corners of the side panels 300, causing the push plates 530 to press against the push rods 590. Simultaneously, the ends of the push rods 590 press against the inclined grooves 5110 of the wedges 5100, causing the wedges 5100 to slide towards the inside of the annular locking block 520. This disengages the wedges 5100 from the inner cavity of the sleeve 510. Once all the wedges 5100 are disengaged, the side panels 300 on both sides can be removed. Then, select an appropriate number of unit module plates to add according to the required number of electrical components. After determining the quantity, sequentially attach the newly added bottom plate 200, back plate 400, and top plate 100 to the original enclosure to extend its width. Then, align the edges of the side panels 300 on both sides so that the annular locking blocks 520 are engaged with the ends of the sleeves 510. Press the side panels 300 again; the spring force will automatically engage the wedges 5100 with the sleeves 510. Secondly, during the extended installation process, the ends of the four sleeves 510 need to be inserted into the intermediate sleeve 550. At this time, the locking posts 560 located on the side wall of the intermediate sleeve 550 retract inward, without obstructing the insertion of the intermediate sleeve 550 into the inner cavity of the sleeve 510. Next, the center rod 540 is inserted into the inner cavity of the intermediate sleeve 550, pressing the locking posts 560 on both sides. The slider 570 slides outward along the slide groove 580, thereby causing the locking posts 560 to lock into the inner cavity of the sleeve 510 in sequence, completing the limiting and fixing, effectively improving the locking strength between the intermediate sleeve 550 and the sleeve 510. Combined with the limiting and guiding effect of the protruding plate 5120, it effectively prevents the locking from shifting. Furthermore, after the center rod 540 penetrates the intermediate sleeve 550, it continues to be inserted into the middle of the sleeve 510 until it reaches the end of the intermediate sleeve 550 on the other side, improving the continuity at the joint of the sleeve 510 and the intermediate sleeve 550, forming a stable frame to prevent the housing from shaking after installation. Finally, each time a back panel 400 is expanded, a cooling fan 610 can be added simultaneously, ensuring uniform heat dissipation in the newly added space. Furthermore, the newly added main ventilation duct 630 can be connected in series with the original main ventilation duct 630 via a sealing ring 640, thus appropriately reducing the power of each cooling fan 610 while maintaining the airflow velocity within the main ventilation duct 630, saving energy. Simultaneously, the branch ducts 650 in each back panel 400 area, through multiple evenly distributed air inlets 660, can accurately absorb heat near electrical components and expel it through the manifold 620, achieving uniform and efficient heat dissipation. The mounting plate 680 is secured by the mounting bracket 670, allowing for the installation of an appropriate number of electrical components as needed. When expanding the enclosure, an additional mounting plate 680 can be added to the original mounting plate 680, forming a uniform elongated shape, ensuring neat installation of electrical components.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modular assembled distribution box enclosure, comprising a top plate (100), side plates (300) abutting against both sides of the top plate (100), a back plate (400) fixedly connected to the top plate (100) by a triangular plate, a bottom plate (200) fixedly connected to the bottom of the back plate (400), and adjacent plates being interlocked by concave and convex sidewalls, characterized in that: Also includes: The reinforced support mechanism (500) has four sets, which are respectively located on both sides of the top plate (100) and the bottom plate (200); A fixed-point heat dissipation mechanism (600) is connected to a back plate (400); The reinforced support mechanism (500) includes sleeves (510) fixed to both sides of the top plate (100) and the bottom plate (200), respectively. The inner cavities of the four sleeves (510) are movably fitted with a central rod (540), and the two ends of the sleeves (510) are slidably engaged with intermediate sleeves (550) through column grooves.

2. The modular assembled distribution box enclosure according to claim 1, characterized in that: The reinforced support mechanism (500) also includes several sliding grooves (580) equidistantly opened on both sides of the intermediate sleeve (550). The inner walls of the sliding grooves (580) are slidably connected to the locking pins (560) by the sliders (570). The ends of the locking pins (560) are locked into the inner cavity of the sleeve (510) by the circular grooves.

3. The modular assembled distribution box enclosure according to claim 2, characterized in that: The sidewalls of the four intermediate sleeves (550) are all fixed with protrusions (5120), and the intermediate sleeves (550) are slidably engaged with the inner cavity of the sleeve (510) through the protrusions (5120).

4. The modular assembled distribution box enclosure according to claim 3, characterized in that: All four central rods (540) are movably inserted through the inner cavity of the intermediate sleeve (550), and the outer walls of the central rods (540) abut against the ends of the locking pins (560). The ends of the four sleeves (510) are slidably engaged with annular locking blocks (520), and the ends of the four annular locking blocks (520) are fixed to the four corners of the side plate (300).

5. The modular assembled distribution box enclosure according to claim 4, characterized in that: The sidewalls of the four annular blocks (520) are elastically slidably connected with wedges (5100). The ends of the wedges (5100) are all engaged with the inner cavity of the sleeve (510) through grooves. The middle of each wedge (5100) is provided with an inclined groove (5110).

6. The modular assembled distribution box enclosure according to claim 5, characterized in that: Each of the four wedges (5100) is slidably abutted against a push rod (590) through a groove (5110). The end of the push rod (590) passes through the side plate (300) and is fixedly connected to a pressing plate (530). The pressing plate (530) is elastically slidably connected to the edge of the side plate (300).

7. The modular assembled distribution box enclosure according to claim 6, characterized in that: The fixed-point heat dissipation mechanism (600) includes a heat dissipation fan (610) fixedly penetrating the side wall of the back plate (400), and a manifold (620) is fixedly connected to the inner side of the back plate (400) at the position corresponding to the heat dissipation fan (610).

8. The modular assembled distribution box enclosure according to claim 7, characterized in that: Both sides of the manifold (620) are fixedly connected to the main ventilation pipe (630), and the ends of the main ventilation pipe (630) are fixedly connected to the sealing ring (640).

9. The modular assembled distribution box enclosure according to claim 8, characterized in that: Each of the manifolds (620) has a branch pipe (650) fixedly connected to its lower side, and the branch pipe (650) has several air inlets (660) evenly distributed on it.

10. The modular assembled distribution box enclosure according to claim 9, characterized in that: Several pairs of slot brackets (670) are fixedly connected at equal intervals on the lower middle side of the back plate (400). Each pair of slot brackets (670) is connected to a slot mounting plate (680). The slot mounting plates (680) are all located near the air inlet (660).

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