Electric meter box with waterproof and dustproof performance

Abstract

The application relates to a watertight and dustproof electric meter box, and relates to the technical field of electronic equipment, which comprises an outer box body, an inner box body arranged in the outer box body, a maintenance opening on the front face of the outer box body, an outer box door, an inner box door, a first water blocking assembly, a second water blocking assembly, the first water blocking assembly comprising an annular partition plate, a first waterproof cloth and a first unfolding mechanism, the second water blocking assembly comprising a second waterproof cloth and a second unfolding mechanism, the first waterproof cloth and the second waterproof cloth being unfolded to form a maintenance shed after the outer box door and the inner box door are opened, and the annular partition plate is further provided with a water guide groove, a drain hole, a limiting assembly, a magnetic sealing strip and the like. The application has good watertight and dustproof effects, can form a maintenance shed after the box door is opened to facilitate maintenance, and further improves the protection performance through various structural designs, and the transparent or translucent materials of the components also facilitate observation of the internal conditions.

Description

Technical Field

[0001] This application relates to the field of electronic equipment technology, and in particular to an electric meter box with waterproof and dustproof properties. Background Technology

[0002] In the field of electronic equipment technology, meter boxes, as a crucial infrastructure in power systems, are widely used in various outdoor environments, playing a key role in protecting meters and related electronic components. With the continuous development of the power industry, the performance requirements for meter boxes are also increasing. Reliable meter boxes ensure the accuracy and stability of electricity metering, providing solid support for the safety and efficiency of power supply, and are of paramount importance for maintaining the normal operation of the entire power network. They not only affect the economic benefits of power companies but are also closely related to the daily lives and production activities of a large number of users. Whether in urban high-rise buildings or remote rural power supply facilities, meter boxes silently play a vital role, and their performance directly affects the reliability and security of the power system.

[0003] In related technologies, to address the protection issues of meter boxes, some meter boxes use ordinary sealing strips to prevent dust and water from entering, improving the sealing effect by increasing the thickness and elasticity of the strips. Other meter boxes are equipped with simple rain covers installed on the top of the box to prevent rainwater from directly hitting the box. Additionally, some manufacturers perform special treatments on the outer casing of the meter box, such as coating it with waterproof paint, to enhance its waterproof performance. These conventional methods provide a certain degree of protection and are widely used in the production and use of meter boxes.

[0004] However, ordinary sealing strips are prone to aging and wear, leading to decreased sealing performance and an inability to effectively prevent dust and water intrusion for extended periods. Simple rain covers only protect the top, offering poor waterproofing and dustproofing for the sides and bottom. While applying waterproof paint can enhance the outer casing's waterproofing, its protective effect on the interior is limited, and the paint may peel off due to prolonged exposure to harsh environments. Especially during outdoor maintenance work, the lack of effective protective structures after opening the meter box leaves the meter and internal electronic components vulnerable to rain and dust, affecting their normal operation and lifespan. Summary of the Invention

[0005] The purpose of this application is to overcome the above-mentioned technical problems and provide an electric meter box with waterproof and dustproof performance.

[0006] A waterproof and dustproof meter box includes an outer casing and an inner casing inside it. The outer casing has a maintenance opening on the front and also includes: The outer door is connected to the outer casing via a first hinge. The inner door is located inside the outer door; The first water-blocking assembly is connected between the outer casing and the outer casing door, and includes an annular partition, a first waterproof cloth, and a first unfolding mechanism for unfolding the first waterproof cloth as the outer casing door is opened. The second water-blocking assembly is connected between the inner box and the inner box door, and includes a second waterproof cloth and a second unfolding mechanism for unfolding the second waterproof cloth as the inner box door is opened; When the outer and inner doors are opened, the first and second waterproof tarpaulins unfold and together enclose the maintenance shed.

[0007] By adopting the above technical solution, a new logic is defined in which four major modules, namely the outer box door, the inner box door, the first water-blocking component, and the second water-blocking component, work together, realizing the transformation from "static box-closed protection" to "dynamic box-opening protection". When the box door is opened for maintenance, a physically enclosed temporary work space (maintenance shed) can be generated immediately and automatically, solving the problem of lack of protection for outdoor equipment in the process of opening the box for maintenance.

[0008] Optionally, an annular partition is fixed to the inner cavity of the outer casing and surrounds the maintenance opening, and an annular water guide groove is provided on its inner side wall; a sealing ring corresponding to the position of the water guide groove is fixed on the inner side of the outer casing door, and when the outer casing door is closed, the sealing ring is inserted into the water guide groove; a drainage hole communicating with the outside of the outer casing is provided at the bottom of the water guide groove.

[0009] By adopting the above technical solution, a logic for the coordinated operation of the outer box door, inner box door, first water-blocking component, and second water-blocking component is established, realizing the transformation from static box-closing protection to dynamic box-opening protection. It instantly and automatically generates a temporary workspace maintenance shed, solving the problem of lack of protection in the outdoor equipment box-opening maintenance process. At the same time, it provides an active drainage secondary sealing structure. The insert-type sealing ring combined with the water guide groove strengthens the seal, and the drainage hole can actively guide the infiltrated water to the outside of the box, avoiding corrosion, freezing and cracking or mold growth caused by water retention, and realizing the self-cleaning of the sealing system.

[0010] Optionally, the first unfolding mechanism includes a first shaft pin, a plurality of first rotating plates sleeved on the first shaft pin, and a first waterproof cloth connected in series with each of the first rotating plates; one end of the first shaft pin is fixed to an annular partition and extends into a water guide groove, the topmost first rotating plate is fixed to the inner wall of the water guide groove, and the bottommost first rotating plate is connected to a sealing ring or an outer casing door.

[0011] By adopting the above technical solutions, a system architecture and working mode of "dynamically constructed enclosed maintenance shed" was established, realizing the transformation from "static closed protection" to "dynamic open protection". When the box door is opened for maintenance, a temporary work space can be generated immediately and automatically. An "actively guided" secondary sealing structure is provided to strengthen the seal and prevent moisture retention. The "rigid-flexible conversion" and "orderly and reliable large-area unfolding" of the first waterproof cloth are realized, ensuring that the waterproof cloth unfolds reliably, is compactly stored, and has direct power transmission.

[0012] Optionally, a first counterweight is fixed on the side of the first rotating plate away from the first pivot pin; and there is a height difference between the top and bottom first rotating plates, so that the first waterproof cloth is tilted after being unfolded.

[0013] By adopting the above technical solution, the first counterweight uses gravity to make the unfolded first rotating piece hang down naturally and straighten, resisting the blowing of the wind to maintain the stability of the covering shape; the height difference between the top and bottom rotating pieces makes the unfolded first waterproof cloth tilted, ensuring that rainwater falling on the cloth surface quickly slides down the slope, avoiding accumulation on the cloth surface to increase the load or cause the middle to sag, thus achieving the effect of "instant prevention and drainage".

[0014] Optionally, the second unfolding mechanism includes a second pivot pin, multiple second rotating plates sleeved on the second pivot pin, and a second waterproof cloth connected in series with each of the second rotating plates; the second pivot pin is rotatably connected between the outer box and the inner box, and the inner box door is rotatably connected to the second pivot pin; the topmost second rotating plate is connected to a mounting box fixed on the inner box, and the bottommost second rotating plate is connected to the inner box door.

[0015] By adopting the above technical solutions, a system architecture and working mode of "dynamically constructed enclosed maintenance shed" was established, realizing the transformation from "static closed protection" to "dynamic open protection", instantly and automatically generating temporary workspaces; providing an independent and precisely linked unfolding system for the inner protection, forming dual dynamic protection inside and outside, ensuring that the unfolding of the inner waterproof cloth is completely synchronized with the movement of the inner box door, and the storage base structure is reasonable, realizing the independent and coordinated operation of the inner and outer protection layers.

[0016] Optionally, a telescopic sleeve is slidably mounted on the second rotating plate, and a limiting structure is provided between the telescopic sleeve and the second rotating plate; a guide groove for sliding of the telescopic sleeve is provided on the upper surface of the inner door, as well as a locking structure for fixing the position of the telescopic sleeve.

[0017] By adopting the above technical solution, the coverage area of ​​the second waterproof cloth is made adjustable. Users can expand the effective shielding area by sliding the telescopic sleeve along the guide groove, and fix the position of the telescopic sleeve by using the locking structure. This allows the product to be customized and optimized according to different maintenance scenarios and space conditions, greatly improving practicality and user-friendliness.

[0018] Optionally, it also includes a first limiting component for locking the position of the outer box door after opening, and a second limiting component for locking the position of the inner box door after opening; the first limiting component includes a first limiting rod slidably disposed on the outer box body, and a first snap-fit ​​portion disposed on the outer box door that cooperates with the end of the first limiting rod.

[0019] By adopting the above technical solution, a new logic of collaborative operation of the outer box door, inner box door, first water-blocking component, and second water-blocking component is established, realizing the transformation from "static box-closing protection" to "dynamic box-opening protection". When the box door is opened for maintenance, a temporary physically enclosed work space can be generated immediately and automatically. Furthermore, a simple and solid mechanical lock is provided for the outer box door and inner box door in the open state, ensuring the safety and stability of maintenance operations, preventing the door from moving due to wind, vibration, or accidental contact, and ensuring the constant shape of the maintenance shed.

[0020] Optionally, the outer door and the outer casing are provided with a first magnetic sealing strip and a first metal strip that magnetically attract each other at their contact perimeter; the inner door and the inner casing are provided with a second magnetic sealing strip and a second metal strip that magnetically attract each other at their contact perimeter.

[0021] By adopting the above technical solution, the magnetic seal can automatically attract and align when the door is closed, saving effort and compensating for minor assembly deviations. At the same time, the magnetic force is evenly distributed, avoiding local overpressure or underpressure that may occur with mechanical locking. Moreover, the magnetic force decays much slower than the stress relaxation of rubber, which helps to maintain stable sealing performance in the long term and maintain the high IP protection level of the equipment.

[0022] Optionally, the outer casing, outer door, inner door, first waterproof lining, and second waterproof lining may all be made of transparent or semi-transparent materials.

[0023] By adopting the above technical solutions, physical protection is achieved while maintaining visual transparency in the maintenance work space. Natural light or ambient light is fully utilized to provide sufficient lighting for the maintenance of equipment inside the enclosure, reducing the reliance on additional lighting tools. Operators can clearly observe the situation inside and outside the enclosure, making it easier to communicate with colleagues, observe environmental changes, or monitor equipment status, significantly improving the safety, efficiency, and experience of outdoor maintenance operations.

[0024] Optionally, the inner wall of the water channel is coated with a hydrophobic coating.

[0025] By adopting the above technical solution, the inner wall of the water guide channel is coated with a hydrophobic coating, which can reduce water flow resistance, allow water droplets to quickly gather towards the drain hole, reduce dirt adhesion, keep the drainage channel unobstructed, enhance the "water-repellent" and "self-cleaning" capabilities of the water guide channel, and optimize drainage efficiency.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. By working together with the outer box door, inner box door, first water-blocking component, and second water-blocking component, the system can transform from static closed protection to dynamic open protection. When the box door is opened for maintenance, a maintenance shed can be automatically generated immediately, solving the problem of lack of protection in the maintenance process of outdoor equipment. 2. The sealing method of inserting the sealing ring into the water guide groove is combined with the drainage hole of the water guide groove to strengthen the seal, avoid corrosion and other problems caused by water retention at the sealing interface, and realize the self-cleaning of the sealing system; 3. The outer casing, outer door, inner door, first waterproof tarpaulin, and second waterproof tarpaulin are made of transparent or semi-transparent materials to form a transparent operating room, allowing light to enter and ensuring unobstructed vision, thereby improving the safety, efficiency, and experience of outdoor maintenance operations. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the overall structure of this application; Figure 3 yes Figure 1 A magnified view of part A in the middle; Figure 4 This is a structural schematic diagram of the present application, mainly showing the first rotating plate; Figure 5 yes Figure 4 A magnified view of part B in the middle section; Figure 6 This is a schematic diagram of the overall structure of this application, mainly showing the insect-proof net; Figure 7 yes Figure 6 A magnified view of part C in the middle; Figure 8 This is a structural schematic diagram of the present application, mainly showing the second rotating plate and the telescopic sleeve; Figure 9 yes Figure 2 A magnified view of part D in the middle.

[0028] Attached Figure Descriptions: 1. Outer casing; 2. Outer door; 3. Inner casing; 4. Inner door; 5. First water-blocking assembly; 501. Annular partition; 502. Sealing ring; 503. First shaft pin; 504. First rotating plate; 505. First waterproof cloth; 506. First counterweight; 507. First limiting rod; 508. Snap-fit ​​block; 6. Second water-blocking assembly; 601. Mounting box; 602. Drain pipe; 603. Second shaft pin; 604. ... 605. Rotating plate; 606. Telescopic sleeve; 607. Second waterproof cloth; 608. Adjusting plate; 609. Positioning rod; 610. Second counterweight; 611. Second limit rod; 612. Pull ring; 613. Hook; 7. First metal strip; 8. First magnetic sealing strip; 9. Water guide groove; 10. Drain hole; 11. Snap-fit ​​groove; 12. Second metal strip; 13. Second magnetic sealing strip; 14. Insect net; 15. Guide groove; 16. Adjusting hole. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1 - Appendix Figure 9 This application will be described in further detail below. Example 1

[0030] A waterproof and dustproof meter box, as described above. Figure 1 , Figure 2 The system includes an outer casing 1, an outer door 2 mounted on the outer casing 1, an inner casing 3, an inner door 4 mounted on the inner casing 3, a first water-blocking component 5 positioned between the outer casing 1 and the outer door 2, and a second water-blocking component 6 positioned between the inner casing 3 and the inner door 4. The outer door 2, inner door 4, first water-blocking component 5, and second water-blocking component 6 work together to form a maintenance shed at the maintenance opening on the outer casing 1, which encloses the maintenance opening on the outer casing 1.

[0031] The outer casing 1 has an inner cavity, and the inner casing 3 is continuously welded and fixed to the inner cavity of the outer casing 1 via a bracket, creating a gap between the inner wall of the outer casing 1 and the outer surface of the inner casing 3. The inner casing 3 also has a chamber for installing electronic components. The outer casing door 2 surrounds and is fitted with a first metal strip 7 at the maintenance opening. A first magnetic sealing strip 8 is fixedly connected to the periphery of the outer casing door 2, and the first magnetic sealing strip 8 and the first metal strip 7 are magnetically attracted when the outer casing door 2 is closed.

[0032] Reference Figure 1 , Figure 3The first water-blocking component 5 includes an annular partition 501 fixedly connected to the inner wall of the outer casing 1, and an annular water-guiding groove 9 is formed inside the annular partition 501. Additionally, a sealing ring 502 is fixedly connected to the inner side of the outer casing door 2, and the position of the sealing ring 502 matches the water-guiding groove 9. When the outer casing door 2 is closed, the sealing ring 502 is inserted into the water-guiding groove 9. Meanwhile, the inner wall of the water-guiding groove 9 is coated with a hydrophobic coating, and multiple drainage holes 10 are formed on the bottom surface of the outer casing 1 at the annular partition 501, thereby facilitating the drainage of rainwater entering the inner wall of the water-guiding groove 9 through the drainage holes 10.

[0033] Reference Figure 3 , Figure 4 , Figure 5 A first shaft pin 503 is threadedly connected to the inner wall of the annular partition 501 near the top of the outer casing 1. One end of the first shaft pin 503 extends into the water guide groove 9. Multiple elastic first rotating plates 504 are sleeved and arranged on the first shaft pin 503. The first rotating plate 504 at the top layer is fixed to the inner wall of the water guide groove 9 by screws, and the first rotating plate 504 at the bottom layer is detachably connected to the sealing ring 502 through a connecting plate.

[0034] Reference Figure 2 , Figure 4 , Figure 5 Multiple first rotating plates 504 are connected in series via a first waterproof cloth 505. When the outer door 2 is opened, the first rotating plate 504 at the bottom layer rotates along the first pivot pin 503, thereby unfolding the first waterproof cloth 505 as a whole. In addition, a first counterweight 506 is fixed to the side of the first rotating plate 504 away from the first pivot pin 503. At the same time, due to the height difference between the first rotating plate 504 at the top layer and the first rotating plate 504 at the bottom layer, the unfolded first waterproof cloth 505 tilts downward.

[0035] Reference Figure 3 The outer casing 1 has a first limiting hole at its bottom, through which a first limiting rod 507 passes. The first limiting rod 507 is fixed to the outer surface of the outer casing 1 by a return spring, and under normal conditions, the end of the first limiting rod 507 is flush with the inner wall of the outer casing 1. A locking block 508 is fixedly connected to the side of the first limiting rod 507. Meanwhile, the outer casing door 2 has a locking groove 11 that mates with the locking block 508. After the outer casing door 2 is opened, pressing the first limiting rod 507 at the bottom of the outer casing 1 causes it to slide and protrude into the inner cavity of the outer casing 1, engaging the locking block 508 with the locking groove 11, thereby limiting the rotation of the outer casing door 2.

[0036] Reference Figure 2 , Figure 3A second metal strip 12 is fixedly connected to the surface of the inner box 3 facing the maintenance port, and a second magnetic sealing strip 13 corresponding to the position of the second metal strip 12 is embedded in the inner wall of the inner box door 4. When the inner box door 4 is closed, the second magnetic sealing strip 13 and the second metal strip 12 are magnetically attracted.

[0037] Reference Figure 2 , Figure 4 , Figure 6 The second water-blocking component 6 includes a mounting box 601 fixedly connected to the top surface of the inner housing 3. The inner cavity of the mounting box 601 is coated with a hydrophobic coating. A drain pipe 602 is fixedly connected to the mounting box 601, and the drain pipe 602 is fixed to the outer surface of the inner housing 3 by screws. The end of the drain pipe 602 away from the mounting box 601 is fixed to the bottom surface of the outer housing 1 and communicates with the outside. At the same time, an insect-proof net 14 is fixedly connected to the opening of the drain pipe 602 on the outer housing 1.

[0038] Reference Figure 6 , Figure 7 The outer casing 1 is rotatably connected to a second shaft pin 603. The top of the second shaft pin 603 passes through a mounting box 601 and is rotatably connected to the inner wall of the mounting box 601. The inner casing door 4 is rotatably connected to the second shaft pin 603 via a hinge. The inner casing door 4 rotates along the second shaft pin 603 to achieve the closing and opening of the inner casing 3.

[0039] The second pivot pin 603 is partially fitted inside the mounting box 601, and multiple elastic second rotating plates 604 are arranged thereon. Each second rotating plate 604 is slidably fitted with a telescopic sleeve 605. A first limiting ring is integrally formed on the telescopic sleeve 605, and a second limiting ring is integrally formed on the second rotating plate 604. The first and second limiting rings cooperate to limit the sliding position of the telescopic sleeve 605. The telescopic sleeves 605 on each second rotating plate 604 are connected in series by a second waterproof cloth 606. Meanwhile, the second rotating plate 604 located at the top is fixed to the top of the mounting box 601 with screws, and the second rotating plate 604 located at the bottom is fixed to the top surface of the inner door 4 with screws.

[0040] Reference Figure 7 , Figure 8The inner door 4 has a guide groove 15 on its upper surface. A telescopic sleeve 605 of the second rotating plate 604 mounted on the inner door 4 is installed within the guide groove 15, allowing the telescopic sleeve 605 to slide along it. An opening is provided on one side of the guide groove 15, allowing the telescopic sleeve 605 to extend beyond the guide groove 15, thereby increasing the coverage area of ​​the second waterproof fabric 606. The inner door 4 has multiple adjustment holes 16, and an adjustment plate 607 is fixedly connected to the side of the telescopic sleeve 605. The inner door 4 has a slot for the adjustment plate 607 to slide. A positioning rod 608 slides on the adjustment plate 607 and can be inserted into the adjustment hole 16 to fix the position of the telescopic sleeve 605.

[0041] A second counterweight 609 is fixed on the side of the telescopic sleeve 605 away from the second shaft pin 603. At the same time, due to the height difference between the second rotating plate 604 located at the top layer and the second rotating plate 604 located at the bottom layer, the unfolded second waterproof cloth 606 tilts downward.

[0042] Reference Figure 2 , Figure 9 A second limiting hole is provided on the surface of the annular partition 501 at the bottom of the outer casing 1. A second limiting rod 610 passes through the second limiting hole and is fixed to the annular partition 501 by another return spring. Under normal conditions, the end of the second limiting rod 610 is flush with the inner ring surface of the annular partition 501 at the bottom of the outer casing 1. In addition, a pull ring 611 is rotatably connected to the end of the second limiting rod 610, and the pull ring 611 can be rotated and retracted into the second limiting rod 610. At the same time, a hook 612 that cooperates with the pull ring 611 is provided on the outer casing door 2. After the outer casing door 2 is opened, the pull ring 611 of the second limiting rod 610 can be pulled to extend the second limiting rod 610 to the annular partition 501, and the pull ring 611 and the hook 612 will cooperate, thereby limiting the rotation of the inner casing door 4.

[0043] The implementation principle of this application embodiment is as follows: When the meter box is in a normally closed state, the outer box door 2 and the inner box door 4 are tightly closed. The first magnetic sealing strip 8 and the first metal strip 7, and the second magnetic sealing strip 13 and the second metal strip 12 are tightly attracted to each other, forming the first magnetic seal. At the same time, the sealing ring 502 on the outer box door 2 is tightly inserted into the water guide groove 9 of the annular partition 501 of the outer box body 1, forming the second plug-in physical seal, which together ensures the extremely high basic protection level of the box body. The first waterproof cloth 505 and the second waterproof cloth 606 are respectively wrapped and stored around the first shaft pin 503 and the second shaft pin 603, and are constrained by the rotating plates of each layer, hidden inside the box body.

[0044] When outdoor maintenance work is required, the operator first opens the outer door 2. The rotation of the outer door 2 causes the lowest layer of the first rotating plate 504 connected to it to rotate around the first pivot pin 503, thereby smoothly pulling out and unfolding the first waterproof cloth 505 connected between the layers of the first rotating plates 504. After the outer door 2 is opened to a suitable angle, the first limiting rod 507 at the bottom of the outer casing 1 is pressed, causing the locking block 508 on it to engage with the locking groove 11 on the outer door 2, thus firmly locking the position of the outer door 2. At this time, the unfolded first rotating plate 504 hangs down naturally under the action of its bottom first counterweight 506, and together with the outer door 2, forms the top and outer facade of the maintenance shed.

[0045] Next, open the inner door 4. The inner door 4 rotates around the second pivot pin 603, driving the lowest second rotating plate 604 and the mechanism connected to it via the telescopic sleeve 605. Depending on the maintenance range, the telescopic sleeve 605 can be pulled out to the side along the guide groove 15 on the inner door 4 and fixed in the appropriate adjustment hole 16 by the positioning rod 608 to expand the coverage width of the second waterproof cloth 606. Opening the inner door 4 causes the second waterproof cloth 606, which is connected between the layers of second rotating plates 604, to be pulled out and unfolded. By pulling the second limiting rod 610 on the annular partition 501, the pull ring 611 at its end is hung on the hook 612 of the inner door 4, thus locking the inner door 4. The unfolded second waterproof cloth 606 also hangs down under the action of counterweight, forming the inner facade of the maintenance shed. The first waterproof cloth 505 and the second waterproof cloth 606 are overlapped and staggered in space, ensuring all-round, no-dead-angle rainproof coverage of the top and sides of the maintenance opening.

[0046] The entire maintenance shed provides shelter while also serving a drainage function: even if a small amount of rainwater seeps in, the water guide trough 9 can collect water droplets that may enter through the gaps in the sealing ring 502 and discharge them through the drain hole 10; the mounting box 601 above the second water-blocking component 6 can also collect water droplets and guide them out of the box through the drain pipe 602. After the work is completed, the locking mechanism is released, and the inner box door 4 and the outer box door 2 are closed in sequence. Under the reset action of the elastic rotating plates of each layer, the first and second waterproof cloths 606 automatically and neatly roll up and store around the shaft pin, and all components return to their initial sealed state.

[0047] This solution achieves a complete closed loop from "static high-strength sealing" to "dynamic operation protection space construction" and then to "automatic storage and restoration" through a series of interconnected precision mechanical structures, greatly improving the environmental adaptability and maintenance convenience of outdoor meter boxes. Example 2

[0048] A waterproof and dustproof meter box, based on the above embodiments, wherein the outer door 2, inner door 4, first waterproof cloth 505, and second waterproof cloth 606 are all made of transparent or semi-transparent materials.

[0049] The implementation principle of this application embodiment is as follows: Based on all the principles of embodiment 1, since the outer box door 2, inner box door 4, first waterproof cloth 505 and second waterproof cloth 606 are all made of transparent or semi-transparent materials, the maintenance shed is constructed and provides rain protection, while not affecting the entry of natural light or external lighting into the maintenance work area, providing operators with a bright working view and further improving the convenience and safety of outdoor maintenance work.

[0050] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A meter box with waterproof and dustproof properties, comprising an outer casing (1) and an inner casing (3) disposed therein, wherein the outer casing (1) has a maintenance opening on its front side, characterized in that, Also includes: The outer door (2) is connected to the outer casing (1) via a first hinge; The inner box door (4) is located inside the outer box door (2); The first water-blocking component (5) is connected between the outer casing (1) and the outer casing door (2), and includes an annular partition (501), a first waterproof cloth (505), and a first unfolding mechanism for unfolding the first waterproof cloth (505) as the outer casing door (2) is opened. The second water-blocking component (6) is connected between the inner box (3) and the inner box door (4), and includes a second waterproof cloth (606) and a second unfolding mechanism for unfolding the second waterproof cloth (606) as the inner box door (4) is opened; When the outer box door (2) and the inner box door (4) are opened, the first waterproof cloth (505) and the second waterproof cloth (606) unfold and together enclose to form a maintenance shed.

2. The meter box according to claim 1, characterized in that: The annular partition (501) is fixed to the inner cavity of the outer casing (1) and surrounds the maintenance port. An annular water guide groove (9) is provided on its inner side wall. A sealing ring (502) corresponding to the position of the water guide groove (9) is fixed on the inner side of the outer casing door (2). When the outer casing door (2) is closed, the sealing ring (502) is inserted into the water guide groove (9). A drain hole (10) communicating with the outside of the outer casing (1) is provided at the bottom of the water guide groove (9).

3. The meter box according to claim 2, characterized in that: The first unfolding mechanism includes a first pivot pin (503), a plurality of first rotating plates (504) sleeved on the first pivot pin (503), and a first waterproof cloth (505) connected in series with each of the first rotating plates (504); one end of the first pivot pin (503) is fixed to the annular partition (501) and extends into the water guide groove (9); the topmost first rotating plate (504) is fixed to the inner wall of the water guide groove (9); and the bottommost first rotating plate (504) is connected to the sealing ring (502) or the outer box door (2).

4. The meter box according to claim 3, characterized in that: A first counterweight (506) is fixed on the side of the first rotating plate (504) away from the first shaft pin (503); and there is a height difference between the top and bottom first rotating plates (504), so that the unfolded first waterproof cloth (505) is in an inclined state.

5. The meter box according to claim 1, characterized in that: The second unfolding mechanism includes a second pivot pin (603), a plurality of second rotating pieces (604) sleeved on the second pivot pin (603), and a second waterproof cloth (606) connected in series with each of the second rotating pieces (604); the second pivot pin (603) is rotatably connected between the outer box (1) and the inner box (3), and the inner box door (4) is rotatably connected to the second pivot pin (603); the topmost second rotating piece (604) is connected to a mounting box (601) fixed on the inner box (3), and the bottommost second rotating piece (604) is connected to the inner box door (4).

6. The meter box according to claim 5, characterized in that: A telescopic sleeve (605) is slidably sleeved on the second rotating plate (604), and a limiting structure is provided between the telescopic sleeve (605) and the second rotating plate (604); a guide groove (15) for the telescopic sleeve (605) to slide is provided on the upper surface of the inner box door (4), and a locking structure is provided for fixing the position of the telescopic sleeve (605).

7. The meter box according to claim 1, characterized in that: It also includes a first limiting component for locking the position of the outer box door (2) after opening, and a second limiting component for locking the position of the inner box door (4) after opening; the first limiting component includes a first limiting rod (507) slidably disposed on the outer box body (1), and a first snap-fit ​​portion disposed on the outer box door (2) that cooperates with the end of the first limiting rod (507).

8. The meter box according to claim 1, characterized in that: The outer door (2) and the outer box body (1) are provided with a first magnetic sealing strip and a first metal strip (7) that magnetically attract each other at their contact periphery; the inner door (4) and the inner box body (3) are provided with a second magnetic sealing strip and a second metal strip (12) that magnetically attract each other at their contact periphery.

9. The meter box according to claim 1, characterized in that: The outer casing (1), the outer casing door (2), the inner casing door (4), the first waterproof fabric (505), and the second waterproof fabric (606) are all made of transparent or semi-transparent materials.

10. The meter box according to claim 2, characterized in that: The inner wall of the water guide channel (9) is coated with a hydrophobic coating.

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