A modular power metering box
Through modular design and clever combination of components, the electricity metering box can be conveniently installed and securely connected, solving the problems of complicated connections and easy loosening in the existing technology, improving installation efficiency and equipment stability, and ensuring the high efficiency of air circulation and the long-term reliability of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI HUALAI ELECTRIC TECH CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-05-26
AI Technical Summary
The existing connection method for electricity metering boxes is cumbersome and inefficient in terms of installation. Welding poses a risk of deformation, and bolt tightening is time-consuming, labor-intensive, and prone to loosening, affecting the stability and safety of equipment operation.
Adopting a modular design, the enclosure is connected conveniently and securely using components such as rotating handles, buckles, rotating rods, and locking strips. Combined with a spring and stop block reset and fixing mechanism, the connection is ensured to be stable. At the same time, the combination of a fan and activated carbon filter plate achieves efficient air filtration and purification, and supports convenient maintenance operations.
It improves installation efficiency, ensures the stability and safety of connections, extends the service life of equipment, and guarantees the long-term stable operation and efficient air circulation of the power metering box.
Smart Images

Figure CN224288934U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electricity metering box technology, and in particular to a modular electricity metering box. Background Technology
[0002] As an indispensable key device in the power system, the electricity metering box undertakes the important responsibilities of electricity metering, distribution, and protection, and is widely used in power terminal scenarios such as residential communities, commercial buildings, and industrial sites. With the rapid development of the power industry and the increasing demand for electricity, higher requirements are placed on the functionality, reliability, and ease of installation of electricity metering boxes, especially in terms of box connection and internal environmental control, where technological innovation is urgently needed to adapt to complex and ever-changing application scenarios.
[0003] In existing technologies, the connection of electricity metering boxes typically employs traditional methods such as welding and bolting. Welding fuses box components together by melting metal at high temperatures, forming a stable connection. However, this method requires specialized welding equipment and operational skills, and the high temperatures generated during welding can easily cause box deformation, affecting installation accuracy. Bolting, on the other hand, uses nuts and bolts to fix box components together. While relatively simple to operate, it requires the use of wrenches and other tools to tighten each bolt individually, resulting in low installation efficiency. Furthermore, over time, bolts may loosen due to vibration or other factors, posing a safety hazard.
[0004] However, existing box connection methods generally suffer from cumbersome installation processes and low efficiency. The professional requirements and deformation risks of welding, as well as the time-consuming, labor-intensive, and easily loosened defects of bolt tightening, make it difficult for electricity metering boxes to meet the needs of rapid deployment and safe operation in power engineering projects during on-site installation, commissioning, and subsequent maintenance. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a modular power metering box, which aims to improve the problems of cumbersome installation process and low efficiency that are common in existing box connection methods.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a modular electricity metering box, comprising a box body, a guide rail fixedly connected to the outer wall of the box body, a fixing block fixedly connected to the outer wall of the box body, a buckle rotatably connected between the fixing blocks, a handle fixedly connected to the outer wall of the buckle, a limit component provided inside the buckle, a rotating rod rotatably connected to the outer wall of the box body, a baffle fixedly connected to the outer wall of the rotating rod, a retaining strip fixedly connected inside the baffle, and a discharge hole opened inside the box body;
[0007] The limiting component includes a sliding rod, one end of which is fixedly connected to a stop block, and the outer wall of the sliding rod is fixedly connected to a spring.
[0008] Furthermore, the sliding rod is slidably connected inside the buckle, and the outer wall of the spring is fixedly connected inside the buckle.
[0009] Furthermore, a filter chamber is slidably connected inside the housing, and a mounting base is fixedly connected to the outer wall of the filter chamber.
[0010] Furthermore, a fixing bolt is provided inside the mounting base, and the outer wall of the fixing bolt is threadedly connected to the inside of the housing.
[0011] Furthermore, a fan is slidably connected to the inner wall of the filter chamber, and two fixing bolts are installed inside the filter chamber.
[0012] Furthermore, the outer wall of the second fixing bolt is threaded into the interior of the fan, and a filter plate is provided on one side of the fan.
[0013] Furthermore, the outer wall of the filter plate is disposed on the inner wall of the filter chamber, and an activated carbon filter plate is disposed inside the filter plate.
[0014] This utility model has the following beneficial effects:
[0015] 1. In this utility model, a convenient and secure connection between housings is achieved through the ingenious cooperation of components such as the rotating handle, buckles, rotating rod, and locking strip. During operation, simply rotating the handle drives the buckles to move and align, and then rotating the rotating rod allows the locking strip to slide within the buckles to complete the connection. No complex tools or cumbersome operations are required, greatly improving installation efficiency. Simultaneously, the reset and fixing mechanism formed by the spring and stop block ensures the housing is stable and reliable after connection, effectively preventing loosening and separation due to external forces, thus enhancing the overall structural stability and safety.
[0016] 2. In this utility model, an external air is driven by a fan through a filter chamber for preliminary filtration and a filter plate for deep purification. Combined with activated carbon filter plates to adsorb moisture, this effectively removes heat and moisture from the chamber, preventing electrical component malfunctions caused by high temperatures and humidity. It also filters dust and impurities, reducing dust corrosion and extending the equipment's lifespan. Furthermore, the filter chamber, fan, and filter plates are easily disassembled and assembled using the fixing bolts within the drive mounting base, facilitating regular cleaning and maintenance, ensuring continuous and efficient air circulation, and guaranteeing the long-term stable operation of the electricity metering box. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of a modular power metering box proposed in this utility model;
[0018] Figure 2 This is a schematic diagram of one side of the modular energy metering box proposed in this utility model;
[0019] Figure 3 This is a schematic diagram of the internal structure of the snap-fit mechanism of a modular energy metering box proposed in this utility model;
[0020] Figure 4 This is a schematic diagram of the internal structure of the filter compartment of a modular power metering box proposed in this utility model.
[0021] Legend:
[0022] 1. Housing; 2. Guide rail; 3. Fixing block; 4. Buckle; 5. Handle; 6. Sliding rod; 7. Spring; 8. Stop block; 9. Rotating rod; 10. Baffle one; 11. Locking strip; 12. Discharge hole; 13. Filter compartment; 14. Mounting base; 15. Fixing bolt one; 16. Fan; 17. Fixing bolt two; 18. Filter plate; 19. Activated carbon filter plate. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Reference Figure 1 - Figure 4 An embodiment of this utility model is provided: a modular energy metering box, including a box body 1, a guide rail 2 fixedly connected to the outer wall of the box body 1, a fixing block 3 fixedly connected to the outer wall of the box body 1, a buckle 4 rotatably connected between the fixing blocks 3, a handle 5 fixedly connected to the outer wall of the buckle 4, a limit component provided inside the buckle 4, a rotating rod 9 rotatably connected to the outer wall of the box body 1, a baffle 10 fixedly connected to the outer wall of the rotating rod 9, a retaining strip 11 fixedly connected inside the baffle 10, and a discharge hole 12 opened inside the box body 1;
[0025] The limiting component includes a sliding rod 6, one end of which is fixedly connected to a stop block 8, and a spring 7 is fixedly connected to the outer wall of the sliding rod 6. The sliding rod 6 is slidably connected inside the buckle 4, and the outer wall of the spring 7 is fixedly connected inside the buckle 4.
[0026] Specifically, when using this electricity metering box, turn the handle 5 to drive the buckle 4 to rotate between the two fixed blocks 3, moving it to the appropriate position. Then adjust the buckle 4 so that its central through hole aligns with the rotating rod 9 and the baffle 10, ensuring that the buckle 4 fits tightly against the rear side of the box body 1, providing a basic stability for the connection. Next, rotate the rotating rod 9. During the rotation, the buckle 4 remains stably held at the rear side of the box body 1, at which point the locking strip 11 begins to slide within the buckle 4. As the locking strip 11 slides, it applies pressure to the stop block 8, causing the sliding rod 6 to move within the buckle 4, facilitating the smooth sliding of the locking strip 11 into the buckle 4. At the same time, the movement of the sliding rod 6 compresses the spring 7, which acts as a buffer to prevent hard collisions between components. When the locking strip 11 passes the stop block 8, the spring 7 rebounds, pushing the stop block 8 back to its original position, firmly fixing the locking strip 11 within the buckle 4. This achieves a secure connection between the two boxes 1, with a simple design and operation, and a stable and reliable connection.
[0027] Reference Figure 1 - Figure 4 The filter chamber 13 is slidably connected inside the housing 1. The outer wall of the filter chamber 13 is fixedly connected to the mounting base 14. The mounting base 14 is provided with a fixing bolt 15. The outer wall of the fixing bolt 15 is threadedly connected to the inside of the housing 1. The inner wall of the filter chamber 13 is slidably connected to the fan 16. The filter chamber 13 is provided with a fixing bolt 17. The outer wall of the fixing bolt 17 is threadedly connected to the inside of the fan 16. A filter plate 18 is provided on one side of the fan 16. The outer wall of the filter plate 18 is set on the inner wall of the filter chamber 13. An activated carbon filter plate 19 is provided inside the filter plate 18.
[0028] Specifically, starting the fan 16 introduces outside air into the housing 1, improving air circulation efficiency. The air first undergoes preliminary filtration through the filter chamber 13 to remove larger particles, and then further purification through the filter plate 18. The activated carbon filter plate 19 inside the filter plate 18 effectively absorbs moisture from the air, achieving moisture prevention and ensuring a dry environment inside the housing, preventing damage to electrical components due to dampness. Furthermore, the filter chamber 13, fan 16, and filter plate 18 can be easily disassembled and reassembled using the fixing bolts 15 inside the drive mounting base 14, facilitating regular cleaning and maintenance of these components, continuously ensuring efficient air circulation, extending the service life of the equipment inside the power metering box, and ensuring its stable operation.
[0029] Working principle: When using this electricity metering box, turning the handle 5 will drive the latch 4 to rotate between the two fixed blocks 3, ensuring that the latch 4 can accurately move to the required position. Next, adjust the position of the latch 4 so that its central through hole is aligned with the rotating rod 9 and the baffle 10, ensuring that the latch 4 can accurately fit against the rear side of the box body 1. The design of the latch 4 allows it to fit tightly against the box body 1, providing a stable connection. Then, rotate the rotating rod 9, ensuring that the latch 4 can remain stable during the rotation. At the rear of the housing 1, as the rotating rod 9 rotates, the locking strip 11 begins to slide within the buckle 4. During this process, the locking strip 11 applies pressure to the stop block 8, causing the sliding rod 6 to move within the buckle 4, allowing the locking strip 11 to slide smoothly into the buckle 4. At the same time, the movement of the sliding rod 6 compresses the spring 7, which acts as a buffer and reset mechanism. When the locking strip 11 passes the stop block 8, the spring 7 rebounds, pushing the stop block 8 to reset and firmly fixing the locking strip 11 within the buckle 4, thus achieving a secure connection between the two housings 1.
[0030] In addition, starting the fan 16 drives the outside air into the interior of the housing 1 to improve air circulation. This process involves initial filtration through the filter chamber 13, followed by further filtration through the filter plate 18. At the same time, the activated carbon filter plate 19 inside the filter plate 18 can also filter the moisture in the air, improving the dryness of the air and providing moisture protection. During this process, the filter chamber 13 can be disassembled and assembled by using the fixing bolts 15 inside the drive mounting base 14. This allows the filter chamber 13, the fan 16, and the filter plate 18 to be removed for cleaning, thereby maintaining efficient air circulation and achieving the effect of efficient air circulation.
[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A modular energy metering box, comprising a box body (1), characterized in that: The outer wall of the box (1) is fixedly connected to a guide rail (2), the outer wall of the box (1) is fixedly connected to a fixing block (3), the fixing blocks (3) are rotatably connected to each other with a buckle (4), the outer wall of the buckle (4) is fixedly connected to a handle (5), the buckle (4) is provided with a limit component inside, the outer wall of the box (1) is rotatably connected to a rotating rod (9), the outer wall of the rotating rod (9) is fixedly connected to a baffle (10), the baffle (10) is fixedly connected to a clip (11), and the box (1) is provided with a discharge hole (12). The limiting component includes a sliding rod (6), one end of which is fixedly connected to a stop (8), and the outer wall of the sliding rod (6) is fixedly connected to a spring (7).
2. The modular energy metering box according to claim 1, characterized in that: The sliding rod (6) is slidably connected inside the buckle (4), and the outer wall of the spring (7) is fixedly connected inside the buckle (4).
3. A modular energy metering box according to claim 1, characterized in that: The filter chamber (13) is slidably connected inside the housing (1), and the mounting base (14) is fixedly connected to the outer wall of the filter chamber (13).
4. A modular energy metering box according to claim 3, characterized in that: The mounting base (14) is provided with a fixing bolt (15) inside, and the outer wall of the fixing bolt (15) is threaded to the inside of the housing (1).
5. A modular energy metering box according to claim 4, characterized in that: A fan (16) is slidably connected to the inner wall of the filter chamber (13), and two fixing bolts (17) are provided inside the filter chamber (13).
6. A modular energy metering box according to claim 5, characterized in that: The outer wall of the fixing bolt two (17) is threaded to the inside of the fan (16), and a filter plate (18) is provided on one side of the fan (16).
7. A modular energy metering box according to claim 6, characterized in that: The outer wall of the filter plate (18) is disposed on the inner wall of the filter chamber (13), and an activated carbon filter plate (19) is disposed inside the filter plate (18).