Low-voltage cabinet body structure

By using a mechanical locking system and sealing components consisting of knobs, cams, locking blocks, and gears, the problem of the lack of real-time warning in the anti-theft low-voltage electrical cabinet is solved, achieving real-time warning and multi-level sealing, thus enhancing the safety and reliability of the anti-theft low-voltage electrical cabinet.

CN224438326UActive Publication Date: 2026-06-30CHANGDE SANXIN POWER ELECTRONICS TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHANGDE SANXIN POWER ELECTRONICS TECH CO LTD
Filing Date
2025-07-29
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

The existing low-voltage anti-theft cabinets lack an immediate early warning mechanism, making it difficult to respond promptly when electricity theft occurs. They also lack adequate warning and protection measures against internal high-voltage electricity, posing a risk to staff during inspections.

Method used

The mechanical lock control system, consisting of knobs, cams, locking blocks, and gears, combined with sensors and alarm devices, forms a hierarchical anti-theft barrier. Furthermore, it constructs a multi-level sealing barrier through sealing components, enhancing physical protection and intelligent monitoring.

Benefits of technology

It enables real-time early warning when electricity theft occurs, enhances the warning and protection against internal high-voltage electricity, improves the reliability and security of the cabinet, and reduces the inspection risks for staff.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to low -voltage cabinet body structure field discloses a low -voltage cabinet body structure of theft -proof electricity, including cabinet, the cabinet lateral wall rotationally connected has the cabinet door, the inside of cabinet is provided with electric power device, the inside of cabinet is provided with theft -proof electricity subassembly, the inside of cabinet is provided with sealing assembly, theft -proof electricity subassembly includes the mounting box of fixed connection in the inside of cabinet, the lateral wall fixed connection of mounting box has knob, the lateral wall fixed connection of knob has cam, the both sides wall of cam all slide connections has the clamping block, the opposite side wall of clamping block all fixed connection has first spring, the inside rotationally connected of mounting box has the gear, in the utility model, through the structural setting of theft -proof electricity subassembly, solved the lack of illegal operation in prior art instant early warning mechanism, difficult to respond in time when stealing electricity behavior occurs, for the warning and protection means of internal high -voltage electricity are insufficient, and there is the problem of staff inspection risk.
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Description

Technical Field

[0001] This utility model relates to the field of low-voltage cabinet structure, and in particular to a low-voltage cabinet structure for preventing electricity theft. Background Technology

[0002] With the deepening of intelligent and refined management of the power system, the accuracy and security of electricity metering and transmission have become increasingly critical as an important energy source. Electricity theft not only damages the economic interests of power companies, but also threatens the stable operation of the power grid and may even cause safety accidents. Against this background, the low-voltage cabinet structure with anti-theft function has emerged.

[0003] Existing low-voltage anti-theft cabinets are designed with basic protection as their core. They construct physical barriers through robust metal or composite material enclosures, and use mechanical locks to seal the cabinet doors, restricting unauthorized personnel from accessing internal electrical components. At the same time, the cabinets are designed with a reasonable layout of wiring and equipment to centrally protect metering devices and power supply lines. Sealed structures are installed at the inlet and outlet ports to prevent thieves from stealing electricity by connecting external wires or damaging the lines, thus achieving basic anti-theft functions.

[0004] However, existing anti-theft low-voltage cabinets lack an immediate early warning mechanism for illegal operations, making it difficult to respond promptly when electricity theft occurs. They also lack adequate warning and protection measures for internal high-voltage electricity, posing a risk to staff during inspections. Therefore, a new anti-theft low-voltage cabinet structure is proposed to address these issues. Summary of the Invention

[0005] To overcome the above shortcomings, this utility model provides a low-voltage cabinet structure for preventing electricity theft. It aims to improve the existing technology by addressing the lack of an immediate early warning mechanism for illegal operations, the difficulty in responding promptly when electricity theft occurs, the insufficient warning and protection measures for internal high-voltage electricity, and the risk of staff inspection.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a low-voltage cabinet structure for preventing electricity theft, comprising a cabinet body, a cabinet door rotatably connected to the side wall of the cabinet body, an electrical device installed inside the cabinet body, an anti-theft component installed inside the cabinet body, a sealing component installed inside the cabinet body, the anti-theft component comprising a mounting box fixedly connected to the inside of the cabinet body, a knob fixedly connected to the side wall of the mounting box, a cam fixedly connected to the side wall of the knob, a locking block slidably connected to both side walls of the cam, a first spring fixedly connected to the opposite side walls of the locking block, a gear rotatably connected inside the mounting box, a rotating rod fixedly connected to the side wall of the gear, a pedal fixedly connected to the surface of the rotating rod, a sensor abutting the bottom of the pedal, and an alarm device fixedly connected to the top of the cabinet body;

[0007] As a further description of the above technical solution:

[0008] The sealing assembly includes a first sealing ring fixedly connected to the side wall of the cabinet door, a protruding strip fixedly connected to the side wall of the first sealing ring, and at least one telescopic rod fixedly connected inside the cabinet body. A second spring is sleeved on the surface of each telescopic rod, and a second sealing ring is fixedly connected to one end of the second spring. A groove is formed on the surface of the second sealing ring.

[0009] As a further description of the above technical solution:

[0010] One end of the first spring is fixedly connected to the inside of the mounting box, and the cam is rotatably connected to the inside of the mounting box;

[0011] As a further description of the above technical solution:

[0012] The locking block and the gear are engaged with each other, and the rotating rod passes through the side wall of the mounting box and is rotatably connected inside the mounting box;

[0013] As a further description of the above technical solution:

[0014] The locking block is rotatably connected inside the mounting box;

[0015] As a further description of the above technical solution:

[0016] The sensor is fixedly connected inside the cabinet, and the sensor is electrically connected to the alarm device;

[0017] As a further description of the above technical solution:

[0018] The convex strip is slidably connected inside the groove, and one end of the telescopic rod is fixedly connected inside the cabinet.

[0019] As a further description of the above technical solution:

[0020] The first sealing ring is slidably connected inside the cabinet, and the second sealing ring is slidably connected inside the cabinet.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, through the structural design of the anti-theft electrical components, a hierarchical anti-theft barrier is constructed using a mechanical locking system composed of knobs, cams, locking blocks, and gears. Unauthorized personnel find it difficult to break through this mechanical linkage structure to open the cabinet, thus physically strengthening the defense. It also facilitates the storage of the pedal. The pedal, sensor, and alarm device form an intelligent monitoring link. When the pedal is touched, the sensor quickly captures the signal, triggering the alarm device to respond immediately, giving maintenance personnel time to handle the situation. At the same time, it provides light installation warnings for staff, enhancing safety during maintenance. This solves the problem of existing technologies lacking an immediate early warning mechanism for illegal operations, making it difficult to respond promptly when electricity theft occurs, and having insufficient warning and protection measures for internal high-voltage electricity, posing risks to staff during inspections.

[0023] 2. In this utility model, through the structural design of the sealing components, the first sealing ring and the convex strip, and the second sealing ring and the groove are precisely fitted together. With the elastic buffering of the telescopic rod and the second spring, a multi-level sealing barrier is constructed, which effectively prevents water, dust and foreign objects from entering the cabinet. The elastic components make the sealing fit more flexible, and can still maintain a stable seal when the cabinet door is opened and closed and vibrates or the cabinet is deformed by external forces, thereby improving the reliability of the cabinet protection, ensuring the safe operation of internal electrical components in complex environments, and enhancing the practicality of the low-voltage cabinet structure for anti-theft electricity. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of the cabinet structure of a low-voltage cabinet for preventing electricity theft proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the anti-theft structure of a low-voltage cabinet proposed in this utility model.

[0026] Figure 3 This is a schematic diagram of the internal structure of the mounting box of the low-voltage cabinet structure for anti-theft electricity proposed in this utility model;

[0027] Figure 4 This is a schematic diagram of the sealing component of a low-voltage cabinet structure for preventing electricity theft proposed in this utility model;

[0028] Figure 5 This is a schematic diagram of the sealing component of a low-voltage cabinet structure for preventing electricity theft, as proposed in this utility model.

[0029] Legend:

[0030] 1. Cabinet body; 2. Cabinet door; 3. Electrical device; 4. Anti-theft electrical component; 5. Sealing component; 6. Mounting box; 7. Knob; 8. Cam; 9. Locking block; 10. First spring; 11. Gear; 12. Rotating rod; 13. Pedal; 14. Sensor; 15. Alarm device; 16. First sealing ring; 17. Raised strip; 18. Telescopic rod; 19. Second spring; 20. Second sealing ring; 21. Groove. Detailed Implementation

[0031] 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.

[0032] Reference Figures 1-3This utility model provides an embodiment of a low-voltage cabinet structure for preventing electricity theft, including a cabinet body 1. A cabinet door 2 is rotatably connected to the side wall of the cabinet body 1. The cabinet body 1 and the cabinet door 2 provide a stable power transmission environment for the power device 3. The power device 3 is installed inside the cabinet body 1. An anti-theft component 4 is installed inside the cabinet body 1 to provide anti-theft protection for the power device 3 inside the cabinet body 1. A sealing component 5 is installed inside the cabinet body 1 to seal the connection between the cabinet body 1 and the cabinet door 2 to prevent dust from entering. The anti-theft component 4 includes a mounting box 6 fixedly connected inside the cabinet body 1. A knob 7 is fixedly connected to the side wall, and a cam 8 is fixedly connected to the side wall of the knob 7. The knob 7 can move synchronously with the cam 8. When the knob 7 rotates, the cam 8 rotates accordingly. Two locking blocks 9 are slidably connected to both sides of the cam 8. The cam 8 drives the two locking blocks 9 to move using its own curved characteristics. A first spring 10 is fixedly connected to the opposite side walls of the locking blocks 9, providing elastic support and allowing the locking blocks 9 to automatically reset. A gear 11 is rotatably connected inside the mounting box 6. A rotating rod 12 is fixedly connected to the side wall of the gear 11. The gear 11 and the rotating rod 12 rotate synchronously. A pedal 13 is fixedly connected to the surface of cabinet 12. The rotating rod 12 provides a pivot point support for the rotation of the pedal 13. A sensor 14 is abutted against the bottom of the pedal 13. An alarm device 15 is fixedly connected to the top of cabinet 1. The sensor 14 and the alarm device 15 form an early warning mechanism. One end of the first spring 10 is fixedly connected to the inside of the mounting box 6. The first spring 10 connects the mounting box 6 and the cam 8. The cam 8 is rotatably connected to the inside of the mounting box 6. The locking block 9 and the gear 11 are engaged with each other. The knob 7 can drive the cam 8 to rotate inside the mounting box 6, causing the locking block 9 to rotate along the connection point with the mounting box 6, thus engaging the gear 11. The limit switch can be fixed or released. The rotating rod 12 passes through the side wall of the mounting box 6 and is rotatably connected inside the mounting box 6. The rotating rod 12 passes through the mounting box 6 to realize the stable rotation of the rotating rod 12 driven by the gear 11. The locking block 9 is rotatably connected inside the mounting box 6. The mounting box 6 provides a stable rotation point for the locking block 9. The sensor 14 is fixedly connected inside the cabinet 1. The sensor 14 is electrically connected to the alarm device 15. When the pedal 13 touches the bottom sensor 14, it triggers the alarm device 15 to sound an alarm, alerting the operators and making them concentrate on their work to prevent electric shock. It can also alert people who steal electricity.

[0033] Reference Figures 1-5The sealing assembly 5 includes a first sealing ring 16 fixedly connected to the side wall of the cabinet door 2. A protruding strip 17 is fixedly connected to the side wall of the first sealing ring 16. The cabinet door 2 provides a stable installation space for the first sealing ring 16 and the protruding strip 17, allowing the first sealing ring 16 and the protruding strip 17 to seal better. At least one telescopic rod 18 is fixedly connected inside the cabinet body 1. A second spring 19 is fitted on the surface of each telescopic rod 18. A second sealing ring 20 is fixedly connected to one end of each second spring 19. The telescopic rod 18 and the second spring 19 provide an elastic support base for the second sealing ring 20. A groove 21 is formed on the surface of the second sealing ring 20. The protruding strip 17 is slidably connected inside the groove 21. The groove 21 provides a sealing guide for the protruding strip 17, allowing it to enter the groove 21 and achieve a sealing condition. One end of the telescopic rod 18 is fixedly connected inside the cabinet 1. The telescopic rod 18 connects the first sealing ring 16 to the cabinet 1. The first sealing ring 16 is slidably connected inside the cabinet 1. The second sealing ring 20 is slidably connected inside the cabinet 1. When the cabinet door 2 is closed, the second sealing ring 20 enters the cabinet 1. Due to the elastic support of the telescopic rod 18 and the second spring 19, the first sealing ring 16 can push the second sealing ring 20 to slide inside the cabinet 1.

[0034] Working principle: Maintenance personnel use a special tool to turn knob 7, which drives cam 8 to rotate. Cam 8 pushes the two side blocks 9 to overcome the elastic force of the first spring 10 and rotate along the axis connected to the mounting box 6, disengaging from the gear 11. At this time, pedal 13 can be flipped downwards to a horizontal position. Pedal 13 drives the rotating rod 12 and gear 11 to rotate, forming an operating platform. At the same time, pedal 13 touches the bottom sensor 14, triggering the alarm device 15 to sound an alarm, alerting the operators and preventing them from working attentively to avoid electric shock. It can also deter electricity thieves. After the staff gives a warning, the maintenance and meter reading of the power device 3 can be carried out. After the work is completed, the pedal 13 is flipped to the vertical position and the knob 7 is reset so that the locking block 9 limits the gear 11 again and fixes the position of the pedal 13. Then the cabinet door 2 is closed. The first sealing ring 16 on the side wall of the cabinet door 2 is embedded in the inner wall of the cabinet body 1. The protrusion 17 slides into the groove 21 of the second sealing ring 20 at the same time. The telescopic rod 18 and the second spring 19 provide elastic support for the second sealing ring 20, ensuring that the second sealing ring 20 fits tightly with the first sealing ring 16 to form a sealing barrier.

[0035] 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 low-voltage cabinet body structure for preventing electric theft, comprising a cabinet body (1), characterized in that: The cabinet (1) has a cabinet door (2) rotatably connected to its side wall. The cabinet (1) is equipped with an electrical device (3), an anti-theft electrical component (4), and a sealing component (5). The anti-theft electrical component (4) includes a mounting box (6) fixedly connected inside the cabinet (1). A knob (7) is fixedly connected to the side wall of the mounting box (6). A cam (8) is fixedly connected to the side wall of the knob (7). A locking block (9) is slidably connected to both sides of the cam (8). A first spring (10) is fixedly connected to the opposite side wall of the locking block (9). A gear (11) is rotatably connected inside the mounting box (6). A rotating rod (12) is fixedly connected to the side wall of the gear (11). A pedal (13) is fixedly connected to the surface of the rotating rod (12). A sensor (14) is abutted against the bottom of the pedal (13). An alarm device (15) is fixedly connected to the top of the cabinet (1).

2. The low-voltage cabinet body structure of claim 1, wherein: The sealing assembly (5) includes a first sealing ring (16) fixedly connected to the side wall of the cabinet door (2). A protrusion (17) is fixedly connected to the side wall of the first sealing ring (16). At least one telescopic rod (18) is fixedly connected inside the cabinet body (1). A second spring (19) is sleeved on the surface of the telescopic rod (18). A second sealing ring (20) is fixedly connected to one end of the second spring (19). A groove (21) is opened on the surface of the second sealing ring (20).

3. The low-voltage cabinet body structure of claim 1, wherein: One end of the first spring (10) is fixedly connected to the inside of the mounting box (6), and the cam (8) is rotatably connected to the inside of the mounting box (6).

4. The low-voltage cabinet body structure of claim 1, wherein: The locking block (9) is engaged with the gear (11), and the rotating rod (12) passes through the side wall of the mounting box (6) and is rotatably connected inside the mounting box (6).

5. The low-voltage cabinet body structure of claim 1, wherein: The card block (9) is rotatably connected inside the mounting box (6).

6. The low-voltage cabinet body structure of claim 1, wherein: The sensor (14) is fixedly connected inside the cabinet (1), and the sensor (14) is electrically connected to the alarm device (15).

7. The low-voltage cabinet body structure of claim 2, wherein: The protruding strip (17) is slidably connected inside the groove (21), and one end of the telescopic rod (18) is fixedly connected inside the cabinet (1).

8. The low-voltage cabinet body structure of claim 2, wherein: The first sealing ring (16) is slidably connected inside the cabinet (1), and the second sealing ring (20) is slidably connected inside the cabinet (1).