Distribution box with arc extinguishing function

Abstract

The invention relates to a distribution box with an arc extinguishing function, and belongs to the field of distribution boxes, the distribution box comprises supporting legs, the supporting legs are provided with dismounting and mounting protection mechanisms, the dismounting and mounting protection mechanisms comprise a distribution box body fixedly installed at the tops of the supporting legs, and an electrical switch is arranged in the distribution box body. One side of the electrical switch is provided with an arc extinguishing assembly, and the interior of the distribution box body is fixedly provided with a bearing plate. According to the distribution box with the arc extinguishing function, a protective cover is convenient to mount and dismount, an electrical switch is convenient to overhaul, in a ventilation heat dissipation mechanism, an exhaust fan is combined with a ventilation plate to promote air circulation in the distribution box body and accelerate heat dissipation, and through the design of a mounting frame and a fixing screw, flexible mounting and adjustment of a fan assembly are facilitated, and the stable heat dissipation effect is ensured; and an air blower of the ventilation assembly, an air pipe and an air outlet funnel work cooperatively, external cold air is introduced forcefully and is uniformly distributed at all positions in the box, and the heat dissipation efficiency is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of distribution boxes, in particular to a distribution box with an arc extinguishing function. Background Art

[0002] A distribution box is an electrical device used to distribute electrical energy, control circuit on-off, and protect electrical equipment. It plays a key role in the power system. It is usually made of metal (such as cold-rolled steel plate) or plastic. It has certain strength and protective properties, and can prevent dust, water, and foreign objects from intruding. It protects internal electrical components from the external environment. The metal box also has good electromagnetic shielding and grounding performance, which can effectively prevent leakage accidents from causing harm to personnel and equipment.

[0003] Please refer to a distribution box with arc extinguishing function published by announcement No. CN220605560U. In this patent, it is proposed that "it includes a box body, a plurality of electrical switches with the same structure are fixedly installed on the first card strip, and a plurality of arc extinguishing components with the same structure are detachably connected on the two second card strips... That is to say, after installing the second card strip inside the distribution box, the number of arc extinguishing components can be freely matched and assembled according to the number of wiring ports on the electrical switch, so as to realize modular assembly and improve the convenience and efficiency of installation." However, when the device is in use, the electrical components inside the distribution box will continue to generate heat when working, especially some high-power equipment or circuits that run continuously for a long time. The heat accumulation problem is serious. Since the ventilation and heat dissipation design of the traditional distribution box is relatively simple, it often relies only on natural convection or a small number of ventilation holes for ventilation, and the heat dissipation efficiency is low. This not only leads to excessive temperature in the box, but also accelerates the aging and damage of electrical components, and reduces their service life and reliability. Therefore, this application proposes another technical solution to solve this problem. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a distribution box with arc extinguishing function, which has the advantages of being able to protect the arc extinguishing device and effectively ventilate and dissipate heat for the distribution box. It solves the problem in the prior art that the electrical components inside the distribution box will continue to generate heat when working, especially some high-power equipment or circuits that run continuously for a long time, and the heat accumulation problem is serious. Since the ventilation and heat dissipation design of the traditional distribution box is relatively simple, it often only relies on natural convection or a small number of ventilation holes for ventilation, and the heat dissipation efficiency is low, which not only leads to the problem of excessive temperature inside the box.

[0005] In order to achieve the above-mentioned purpose of protecting the arc extinguishing device and effectively ventilating and cooling the distribution box, the present invention provides the following technical solutions: a distribution box with an arc extinguishing function, comprising a support leg, wherein the support leg is provided with a disassembly and assembly protection mechanism;

[0006] The disassembly and assembly protection mechanism comprises a distribution box body fixedly installed on the top of the support leg, an electrical switch is arranged inside the distribution box body, an arc extinguishing assembly is arranged on one side of the electrical switch, a bearing plate is fixedly installed inside the distribution box body, a protective cover is clamped on the inner bottom wall of the distribution box body and the top of the bearing plate, and installation boxes located on both sides of the protective cover are fixedly installed on the inner bottom wall of the distribution box body and the top of the bearing plate;

[0007] A telescopic spring is fixedly installed inside the installation box, a movable plate is fixedly installed on one side of the telescopic spring, sliders slidably connected to the installation box are fixedly installed on the top and bottom of the movable plate, and a limit pin plugged into the protective cover is fixedly installed on one side of the movable plate.

[0008] Furthermore, a ventilation and heat dissipation mechanism is provided on the outside of the distribution box, and the air dissipation and heat exchange mechanism includes a mounting frame movably connected to the inner walls of the left and right sides of the distribution box, and mounting plates are fixedly installed on the top and bottom of the mounting frame, and the internal threads of the mounting plate are connected to fixing screws threadedly connected to the distribution box, and a connecting plate is fixedly installed inside the mounting frame, an exhaust fan is fixedly installed on one side of the connecting plate, and a breathable plate is fixedly installed inside the connecting plate.

[0009] Furthermore, a ventilation assembly is provided on the top of the distribution box, and the ventilation assembly includes a blower fixedly installed on the top of the distribution box, a flow pipe extending to the inside of the distribution box is fixedly installed on the output end of the blower, an air pipe is fixedly installed on the bottom of the flow pipe, a plurality of air outlet funnels are fixedly installed on the front of the air pipe, and a limit seat fixedly installed on the outer side of the air pipe is fixedly installed on the inner wall of the distribution box.

[0010] Furthermore, the inner bottom wall of the distribution box and the top of the carrier plate are both provided with card slots, and the protective cover is card-connected with the distribution box and the carrier plate through the card slots.

[0011] Furthermore, slots are provided on both the left and right sides of the protective cover, and the limit pins are plugged into the protective cover through the slots.

[0012] Furthermore, the inner walls on both sides of the top and bottom of the installation box are provided with limiting grooves, and the sliding block is slidably connected to the installation box through the limiting grooves.

[0013] Furthermore, thread grooves are provided on the left and right sides of the distribution box and inside the mounting plate, and the fixing screws are threadedly connected to the mounting plate and the distribution box through the thread grooves.

[0014] Furthermore, a mounting groove is provided inside the connecting plate, and the air-permeable plate is fixedly connected to the connecting plate through the mounting groove.

[0015] Furthermore, there are several air outlet funnels, which are evenly arranged on the front of the air pipe. A fixing groove is provided inside the limiting seat, and the air pipe is fixedly connected to the limiting seat through the fixing groove.

[0016] Furthermore, a pipe groove is provided on the top of the distribution box, and the flow pipe is installed and fixed to the distribution box through the pipe groove.

[0017] Compared with the prior art, the present invention provides a distribution box with arc extinguishing function, which has the following features:

[0018] Beneficial effects:

[0019] The distribution box with arc extinguishing function has a protective cover that is easy to install and disassemble, and is convenient for repairing electrical switches. In the ventilation and heat dissipation mechanism, the exhaust fan is combined with a breathable plate to promote air circulation inside the distribution box and accelerate heat dissipation. The design of the mounting frame and fixing screws facilitates the flexible installation and adjustment of the fan assembly to ensure stable heat dissipation effect, maintain a suitable temperature in the box, and enhance the operating stability of electrical components. The blower, flow pipe, air pipe and air outlet funnel of the ventilation assembly work together to forcefully introduce external cold air and evenly distribute it throughout the box, further improving the heat dissipation efficiency, effectively preventing local overheating, ensuring the reliable operation of the distribution box under complex working conditions, and reducing the risk of failures caused by high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic cross-sectional view of the structure of a distribution box with arc extinguishing function proposed by the present invention;

[0021] Figure 2 A schematic side view of the structure of a distribution box with arc extinguishing function proposed by the present invention;

[0022] Figure 3 A distribution box with arc extinguishing function proposed by the present invention Figure 1 A schematic diagram of the enlarged structure in the middle;

[0023] Figure 4 This is a three-dimensional schematic diagram of the external structure of a distribution box with arc extinguishing function proposed by the present invention.

[0024] In the figure: 1. Support leg; 2. Distribution box; 3. Electrical switch; 4. Arc extinguishing assembly; 5. Protective cover; 6. Mounting box; 7. Telescopic spring; 8. Movable plate; 9. Slider; 10. Movable rod; 12. Limit pin; 13. Mounting frame; 14. Mounting plate; 15. Fixing screw; 16. Connecting plate; 17. Exhaust fan; 18. Breathable plate; 19. Blower; 20. Circulation pipe; 21. Air pipe; 22. Exhaust funnel; 23. Limit seat; 201. Loading plate. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figure 1-4 A distribution box with arc extinguishing function comprises a support leg 1, and the support leg 1 is provided with a disassembly and assembly protection mechanism.

[0027] In this embodiment, the disassembly and assembly protection mechanism includes a distribution box 2 fixedly installed on the top of the support leg 1, an electrical switch 3 is arranged inside the distribution box 2, an arc extinguishing assembly 4 is arranged on one side of the electrical switch 3, a supporting plate 201 is fixedly installed inside the distribution box 2, and a card slot is provided on the inner bottom wall of the distribution box 2 and the top of the supporting plate 201. The protective cover 5 is connected to the distribution box 2 and the supporting plate 201 through the card slot, which helps to connect the protective cover 5.

[0028] Among them, the inner bottom wall of the distribution box 2 and the top of the load-bearing plate 201 are both clamped with a protective cover 5, and the inner bottom wall of the distribution box 2 and the top of the load-bearing plate 201 are both provided with clamping grooves, and the protective cover 5 is clamped with the distribution box 2 and the load-bearing plate 201 through the clamping grooves, which facilitates the clamping of the protective cover 5, and the inner bottom wall of the distribution box 2 and the top of the load-bearing plate 201 are both fixedly installed with installation boxes 6 located on both sides of the protective cover 5.

[0029] In this embodiment, a telescopic spring 7 is fixedly installed inside the installation box 6, a movable plate 8 is fixedly installed on one side of the telescopic spring 7, and sliders 9 slidably connected to the installation box 6 are fixedly installed on the top and bottom of the movable plate 8. Limiting grooves are provided on the inner walls on both sides of the top and bottom of the installation box 6, and the slider 9 is slidably connected to the installation box 6 through the limiting grooves, which facilitates the sliding movement of the slider 9.

[0030] Among them, a movable rod 10 movably connected to the installation box 6 is fixedly installed on one side of the movable plate 8, and a limit pin 12 plugged into the protective cover 5 is fixedly installed on one side of the movable plate 8. Slots are provided on the left and right sides of the protective cover 5, and the limit pin 12 is plugged into the protective cover 5 through the slots, which helps the limit pin 12 to plug into the protective cover 5.

[0031] In this embodiment, a ventilation and heat dissipation mechanism is provided on the outer side of the distribution box 2. The ventilation and heat exchange mechanism includes a mounting frame 13 movably connected to the inner walls of the left and right sides of the distribution box 2. A mounting plate 14 is fixedly installed on the top and bottom of the mounting frame 13. Threaded grooves are provided on the left and right sides of the distribution box 2 and the inside of the mounting plate 14. The fixing screws 15 are threadedly connected to the mounting plate 14 and the distribution box 2 through the threaded grooves, which helps to fix the fixing screws 15.

[0032] Among them, the internal thread connection of the mounting plate 14 is connected with a fixing screw 15 which is threadedly connected to the distribution box body 2, the interior of the mounting frame 13 is fixedly installed with a connecting plate 16, one side of the connecting plate 16 is fixedly installed with an exhaust fan 17, the interior of the connecting plate 16 is fixedly installed with an air permeable plate 18, the interior of the connecting plate 16 is provided with an installation groove, and the air permeable plate 18 is fixedly connected to the connecting plate 16 through the installation groove, which helps to install and fix the air permeable plate 18.

[0033] In this embodiment, a ventilation assembly is provided on the top of the distribution box 2, and the ventilation assembly includes a blower 19 fixedly installed on the top of the distribution box 2, and a flow pipe 20 extending to the interior of the distribution box 2 is fixedly installed on the output end of the blower 19. A pipe groove is opened on the top of the distribution box 2, and the flow pipe 20 is installed and fixed to the distribution box 2 through the pipe groove, which helps to fix the flow pipe 20. An air pipe 21 is fixedly installed on the bottom of the flow pipe 20.

[0034] Among them, a plurality of air outlet funnels 22 are fixedly installed on the front of the air pipe 21, and a limiting seat 23 fixedly installed on the outer side of the air pipe 21 and fixedly installed on the inner wall of the distribution box 2. The number of the air outlet funnels 22 is several, and the air outlet funnels 22 are evenly arranged on the front of the air pipe 21. A fixing groove is opened inside the limiting seat 23, and the air pipe 21 is fixedly connected to the limiting seat 23 through the fixing groove, which helps to limit and fix the air pipe 21.

[0035] The beneficial effects of the above embodiments are:

[0036] The distribution box with arc extinguishing function is very convenient and scientific in operation process when it comes to the installation, fixing and protection mechanism of the electrical switch 3 and the arc extinguishing component 4 on the distribution box body 2 and the bearing plate 201. The user only needs to pull the movable rod 10, and the movable rod 10 will accurately drive the movable plate 8 to start moving. Under the ingenious limiting action of the slider 9, the movable plate 8 can move stably and smoothly along the preset trajectory. As the movable plate 8 moves, the limit pin 12 connected thereto will shrink synchronously. After the limit pin 12 shrinks to a suitable position, it can be easily The protective cover 5 is accurately inserted into the corresponding slot, and then the movable rod 10 is released. At this time, the telescopic spring 7 quickly starts to reset by virtue of its own elastic restoring force. During the resetting process, the telescopic spring 7 effectively pushes the movable plate 8 to move in the opposite direction, thereby driving the limit pin 12 to accurately insert into the specified position inside the protective cover 5, thereby realizing the quick and stable disassembly and fixation of the protective cover 5. In this way, the electrical switch 3 and the arc extinguishing component 4 can be properly and reliably protected, effectively resisting various interference and damage factors that may exist in the outside world, and greatly ensuring their normal operation and service life;

[0037] When the distribution box 2 is in operation, a large amount of heat will inevitably be generated due to the continuous operation of many electrical components inside. At this time, the heat dissipation mechanism is immediately started and operates efficiently. First, the exhaust fan 17 is started. The exhaust fan 17 rotates at a high speed, and its blades generate a strong airflow driving force to continuously extract the hot air inside the distribution box 2, thereby forming a local negative pressure area in the box. At the same time, the blower 19 is also started synchronously and starts to extract air strongly. Under the suction force of the blower 19, the air inside the distribution box 2 will enter the internal channel of the air pipe 21 through the air outlet funnel 22 in an orderly manner. Subsequently, the air carrying heat is discharged by the blower 1 9 is smoothly discharged from the box body. In this process, the air permeable plate 18 plays an extremely critical role. The air permeable plate 18 has a unique pore structure that allows air to flow freely, but can effectively intercept dust impurities mixed in the air. When air passes through the air permeable plate 18, the dust impurities will be blocked on one side of the air permeable plate 18, thereby avoiding their entry into the distribution box body 2 and causing pollution. This design not only effectively maintains the cleanliness of the internal environment of the distribution box body 2, reduces the potential impact of dust accumulation on the performance of electrical components, but also further improves the heat dissipation efficiency and stability of the entire device, and significantly increases the use effect and reliability of the device.

[0038] The electrical components appearing in the article are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device for control such as a computer, and the existing public power connection technology is not described in detail in the article.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A distribution box with arc extinguishing function, comprising a support leg (1), characterized in that: The support leg (1) is provided with a disassembly and assembly protection mechanism; The disassembly and assembly protection mechanism comprises a distribution box (2) fixedly mounted on the top of a support leg (1), an electrical switch (3) being arranged inside the distribution box (2), an arc extinguishing assembly (4) being arranged on one side of the electrical switch (3), a bearing plate (201) being fixedly mounted inside the distribution box (2), a protective cover (5) being clamped on the inner bottom wall of the distribution box (2) and the top of the bearing plate, and installation boxes (6) located on both sides of the protective cover (5) being fixedly mounted on the inner bottom wall of the distribution box (2) and the top of the bearing plate; A telescopic spring (7) is fixedly installed inside the installation box (6), a movable plate (8) is fixedly installed on one side of the telescopic spring (7), a slider (9) slidably connected to the installation box (6) is fixedly installed on the top and bottom of the movable plate (8), a movable rod (10) movably connected to the installation box (6) is fixedly installed on one side of the movable plate (8), and a limit pin (12) plugged into the protective cover (5) is fixedly installed on one side of the movable plate (8).

2. A distribution box with arc extinguishing function according to claim 1, characterized in that: A ventilation and heat dissipation mechanism is arranged on the outer side of the distribution box (2), and the ventilation and heat dissipation mechanism comprises a mounting frame (13) movably connected to the inner walls of the left and right sides of the distribution box (2), a mounting plate (14) is fixedly mounted on the top and bottom of the mounting frame (13), the internal thread of the mounting plate (14) is connected to a fixing screw (15) threadedly connected to the distribution box (2), a connecting plate (16) is fixedly mounted inside the mounting frame (13), an exhaust fan (17) is fixedly mounted on one side of the connecting plate (16), and a ventilation plate (18) is fixedly mounted inside the connecting plate (16).

3. A distribution box with arc extinguishing function according to claim 2, characterized in that: A ventilation assembly is arranged on the top of the distribution box (2), and the ventilation assembly comprises a blower (19) fixedly mounted on the top of the distribution box (2); a flow pipe (20) extending into the interior of the distribution box (2) is fixedly mounted on the output end of the blower (19); an air pipe (21) is fixedly mounted on the bottom of the flow pipe (20); a plurality of air outlet funnels (22) are fixedly mounted on the front of the air pipe (21); and a limit seat (23) fixedly mounted on the outer side of the air pipe (21) and connected to the inner wall of the distribution box (2) is fixedly mounted.

4. A distribution box with arc extinguishing function according to claim 3, characterized in that: The inner bottom wall of the power distribution box (2) and the top of the bearing plate are both provided with card slots, and the protective cover (5) is card-connected with the power distribution box (2) and the bearing plate (201) through the card slots.

5. A distribution box with arc extinguishing function according to claim 4, characterized in that: Slots are provided on both the left and right sides of the protective cover (5), and the limit pin (12) is plugged into the protective cover (5) through the slots.

6. A distribution box with arc extinguishing function according to claim 5, characterized in that: The inner walls on both sides of the top and bottom of the installation box (6) are provided with limiting grooves, and the sliding block (9) is slidably connected to the installation box (6) via the limiting grooves.

7. A distribution box with arc extinguishing function according to claim 6, characterized in that: The left and right sides of the power distribution box (2) and the interior of the mounting plate (14) are both provided with threaded grooves, and the fixing screws (15) are threadedly connected to the mounting plate (14) and the power distribution box (2) through the threaded grooves.

8. A distribution box with arc extinguishing function according to claim 7, characterized in that: The connection plate (16) is provided with a mounting groove inside, and the air permeable plate (18) is fixedly connected to the connection plate (16) via the mounting groove.

9. A distribution box with arc extinguishing function according to claim 8, characterized in that: The number of the air outlet funnels (22) is several, and the air outlet funnels (22) are evenly arranged on the front side of the air pipe (21). A fixing groove is provided inside the limiting seat (23), and the air pipe (21) is fixedly connected to the limiting seat (23) via the fixing groove.

10. A distribution box with arc extinguishing function according to claim 9, characterized in that: The top of the power distribution box (2) is provided with a pipe groove, and the flow pipe (20) is installed and fixed to the power distribution box (2) through the pipe groove.

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