Telescopic electric energy metering junction box protection device

Abstract

The utility model provides a telescopic electric energy metering junction box protection device, which belongs to the technical field of electric energy metering junction boxes, and is characterized by comprising a protection box which is a cuboid box and is used for wrapping the electric energy metering junction box. The side wall of the protection box is provided with a circuit hole used for connecting a circuit, the circuit hole is a through hole in the side wall of the protection box, a connecting wire of the electric energy metering junction box penetrates through the circuit hole, and the protection box is of a double-layer telescopic structure; the protection box comprises an outer protection box body and an inner protection box body, the outer protection box body is a cuboid box with an opening in the left side, a rail is arranged at the bottom of the inner side of the outer protection box body, the inner protection box body moves on the rail of the outer protection box body, and the inner protection box body is a cuboid box with openings in the right side and the bottom. Line holes are formed in the front and rear sides of the outer protection box and the inner protection box; according to the utility model, the electric energy metering junction box can be protected, and electricity stealing is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric energy metering junction boxes, and in particular relates to a retractable electric energy metering junction box protection device. Background Art

[0002] Energy metering junction boxes are specialized junction boxes within the standard junction boxes for energy metering devices. They are widely used in secondary circuits with rated voltages up to 660V and rated currents up to 20A. Their primary function is to safely replace or inspect electrical equipment, such as energy meters, electrical instruments, and leakage protection devices, under load, ensuring operator safety and improving on-site work efficiency.

[0003] However, with increasing electricity demand and the increasing complexity of power management, energy metering junction boxes are facing the problem of being exploited by criminals to steal electricity. This theft not only causes economic losses to power supply companies, but also disrupts the normal supply and consumption order and may even cause safety accidents.

[0004] There are various methods of electricity theft, the most common of which involve altering the internal wiring of energy meters, such as shifting and undervoltage theft. Shifting involves changing the live and neutral wire connections, causing the meter to only partially or not count electricity usage. Undervoltage theft involves modifying the voltage circuitry within the meter, causing it to lose power or short-circuit, thereby stealing electricity. These methods are not only technically complex but also pose significant safety risks. Utility Model Content

[0005] In view of this, the utility model provides a retractable electric energy metering junction box protection device, which can solve the problem of electricity theft in the electric energy metering junction box and avoid causing safety accidents.

[0006] The utility model is achieved in this way:

[0007] The utility model provides a retractable electric energy metering junction box protection device, which includes a protection box, which is a rectangular box used to wrap the electric energy metering junction box. The side wall of the protection box is provided with a circuit hole for connecting the circuit. The circuit hole is a through hole on the side wall of the protection box. The wiring of the electric energy metering junction box passes through the circuit hole. The protection box is a double-layer retractable structure.

[0008] On the basis of the above technical solution, the retractable electric energy metering junction box protection device of the present invention can also be improved as follows:

[0009] Among them, the protective box includes an outer protective box and an inner protective box, the outer protective box is a rectangular box with an opening on the left side, a track is provided at the inner bottom of the outer protective box, the inner protective box moves on the track of the outer protective box, the inner protective box is a rectangular box with openings on the right side and the bottom, and circuit holes are provided on the front and back sides of the outer protective box and the inner protective box.

[0010] Furthermore, the front and rear sides of the outer protection box and the inner protection box do not contact each other.

[0011] Furthermore, the circuit hole includes an external wiring hole and an internal wiring hole, the external wiring hole is located on the front and rear sides of the outer protection box, the internal wiring hole is located on the front and rear sides of the inner protection box, and a one-way door is provided on the outside of the internal wiring hole.

[0012] Furthermore, the one-way door includes a door body, a rotating shaft and a torsion spring. The door body is located on the outside of the inner wiring hole facing the outer wiring hole. The door body is rotatably connected to the inner protection box through the rotating shaft, and the torsion spring is also sleeved in the middle of the rotating shaft.

[0013] Furthermore, two extension arms are provided at both ends of the torsion spring, and the included angle of the extension arms is greater than 180°.

[0014] Furthermore, a through hole penetrating the front and back sides is provided on the right side of the top of the external wiring hole, and a plurality of through holes penetrating the front and back are provided on the top of the internal wiring hole.

[0015] Furthermore, the protection box is also equipped with a safety lock, and the width of the safety lock is equal to the distance between the front and back of the outer protection box.

[0016] Furthermore, anti-theft doors are provided on the tops of the outer protection box and the inner protection box.

[0017] Furthermore, the anti-theft door on the top of the outer protection box opens and closes toward the inner protection box, and the anti-theft door on the top of the inner protection box opens and closes toward the outer protection box.

[0018] Compared with the prior art, the beneficial effects of the retractable electric energy metering junction box protection device provided by the utility model are:

[0019] Retractable Design: The device's retractable outer and inner protective boxes allow it to adapt to energy metering junction boxes of varying sizes, enhancing its versatility and applicability. Furthermore, when the energy metering junction box needs to be repaired or replaced, the inner protective box can be adjusted to expose the junction box for easier access.

[0020] Enhanced Protection: The double-layered design provides a more robust barrier for the energy metering junction box, effectively preventing external physical damage and vandalism. Furthermore, the front and rear wiring holes ensure smooth wiring connections while minimizing exposure to the outside world.

[0021] Anti-theft design: A one-way door on the outside of the internal wiring hole, combined with a torsion spring, makes it difficult for unauthorized individuals to directly access or modify the wiring from the outside, effectively preventing electricity theft. The one-way door also reduces the possibility of dust, moisture, and other impurities entering the protective box, maintaining the normal working environment of the junction box.

[0022] Optimized ventilation and heat dissipation: The through holes set on the top of the external wiring holes and the internal wiring holes help to protect the ventilation and heat dissipation inside the box, ensuring that the energy metering junction box maintains stable performance during long-term operation.

[0023] Security lock and security door: The security lock and security door further enhance the security of the device, preventing unauthorized opening and intrusion. The security lock design ensures that only those with the correct key or tool can open the protection box, while the two-way opening and closing design of the security door increases the difficulty of opening and improves the overall protection level.

[0024] Convenience: The protective box can be quickly opened or closed with simple operations when needed, facilitating daily maintenance and repair work. At the same time, the retractable structure design also reduces the complexity and time cost of installation and removal.

[0025] In summary, this utility model retractable electricity metering junction box protection device shows significant beneficial effects in terms of protection performance, anti-electricity theft capability, versatility, convenience and safety, and is of great significance for improving the reliability and safety of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0027] Figure 1 A schematic diagram of a retractable electric energy metering junction box protection device;

[0028] Figure 2 A schematic diagram of a retractable electric energy metering junction box protection device;

[0029] Figure 3 A schematic diagram of an inner protection box of a retractable electric energy metering junction box protection device;

[0030] Figure 4 for Figure 3 A magnified view of middle A;

[0031] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0032] 1. Protection box; 11. Outer protection box; 12. Inner protection box; 2. Wiring hole; 21. External wiring hole; 22. Internal wiring hole; 221. One-way door; 2211. Door body; 2212. Rotating shaft; 2213. Torsion spring. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0034] like Figure 1 , Figure 2 , Figure 3 As shown, it is a first embodiment of a retractable electric energy metering junction box protection device provided by the utility model. In this embodiment, it includes a protection box 1, which is a rectangular box used to wrap the electric energy metering junction box. The side wall of the protection box 1 is provided with a line hole 2 for connecting the line. The line hole 2 is a through hole on the side wall of the protection box 1. The wiring of the electric energy metering junction box passes through the line hole 2. The protection box 1 is a double-layer retractable structure.

[0035] Among them, in the above technical solution, the protective box 1 includes an outer protective box 11 and an inner protective box 12. The outer protective box 11 is a rectangular box with an opening on the left side. A track is provided at the inner bottom of the outer protective box 11. The inner protective box 12 moves on the track of the outer protective box 11. The inner protective box 12 is a rectangular box with openings on the right side and the bottom. The front and back sides of the outer protective box 11 and the inner protective box 12 are both provided with circuit holes 2.

[0036] Furthermore, in the above technical solution, the front and rear sides of the outer protection box 11 and the inner protection box 12 are not in contact.

[0037] Furthermore, in the above technical solution, the circuit hole 2 includes an external wiring hole 21 and an internal wiring hole 22. The external wiring hole 21 is located on the front and rear sides of the outer protective box 11, and the internal wiring hole 22 is located on the front and rear sides of the inner protective box 12. A one-way door 221 is provided on the outside of the internal wiring hole 22.

[0038] like Figure 4As shown, further, in the above technical solution, the one-way door 221 includes a door body 2211, a rotating shaft 2212 and a torsion spring 2213. The door body 2211 is located on the outside of the inner wiring hole 22 facing the outer wiring hole 21. The door body 2211 is rotatably connected to the inner protective box 12 through the rotating shaft 2212, and a torsion spring 2213 is also sleeved in the middle of the rotating shaft 2212.

[0039] Furthermore, in the above technical solution, two extension arms are provided at both ends of the torsion spring 2213, and the angle between the extension arms is greater than 180°.

[0040] Furthermore, in the above technical solution, a through hole penetrating the front and back sides is provided on the right side of the top of the external wiring hole 21, and a plurality of through holes penetrating the front and back are provided on the top of the internal wiring hole 22.

[0041] Furthermore, in the above technical solution, the protection box 1 is also equipped with a safety lock, the width of which is equal to the distance between the front and rear of the outer protection box 11 .

[0042] Furthermore, in the above technical solution, anti-theft doors are provided on the tops of the outer protection box 11 and the inner protection box 12 .

[0043] Furthermore, in the above technical solution, the anti-theft door on the top of the outer protection box 11 opens and closes toward the inner protection box 12 , and the anti-theft door on the top of the inner protection box 12 opens and closes toward the outer protection box 11 .

[0044] Specifically, the principle of the present invention is: when in use, fix the outer protection box 11, fix the electric energy metering junction box on the inner bottom of the outer protection box 11, buckle the outer protection box 11 and the inner protection box 12 to the shortest distance to the protection box 1, pass the line of the electric energy metering junction box through the line hole 2 and connect it to the electric energy metering junction box, wherein, when the line passes through the one-way door 221, manually open the one-way door 221, wherein, a part of the line inside the inner wiring hole 22 must be ensured to remain; after the wiring of the electric energy metering junction box is completed, stretch the inner protection box 12 outward along the track inside the outer protection box 11 to an appropriate length, insert the safety lock into the lock holes at the top of the outer wiring hole 21 and the top of the inner wiring hole 22, pass through the anti-theft doors at the top of the outer protection box 11 and the inner protection box 12, and close the safety lock.

Claims

1. A retractable electric energy metering junction box protection device, characterized in that: The invention comprises a protection box (1), wherein the protection box (1) is a rectangular parallelepiped box used for enclosing an electric energy metering junction box, a circuit hole (2) for connecting a circuit is provided on a side wall of the protection box (1), the circuit hole (2) is a through hole on the side wall of the protection box (1), and the wiring of the electric energy metering junction box passes through the circuit hole (2), and the protection box (1) is a double-layer retractable structure.

2. A retractable electric energy metering junction box protection device according to claim 1, characterized in that: The protective box (1) comprises an outer protective box (11) and an inner protective box (12); the outer protective box (11) is a rectangular parallelepiped box with an opening on the left side; a track is provided at the inner bottom of the outer protective box (11); the inner protective box (12) moves on the track of the outer protective box (11); the inner protective box (12) is a rectangular parallelepiped box with an opening on the right side and the bottom; and circuit holes (2) are provided on the front and rear sides of the outer protective box (11) and the inner protective box (12).

3. The retractable electric energy metering junction box protection device according to claim 2, characterized in that: The front and rear sides of the outer protection box (11) and the inner protection box (12) are not in contact.

4. The retractable electric energy metering junction box protection device according to claim 3, characterized in that: The circuit hole (2) comprises an external wiring hole (21) and an internal wiring hole (22); the external wiring hole (21) is located at the front and rear sides of the external protection box (11); the internal wiring hole (22) is located at the front and rear sides of the internal protection box (12); and a one-way door (221) is provided on the outside of the internal wiring hole (22).

5. The retractable electric energy metering junction box protection device according to claim 4, characterized in that: The one-way door (221) comprises a door body (2211), a rotating shaft (2212) and a torsion spring (2213); the door body (2211) is located on the outside of the inner wiring hole (22) facing the outer wiring hole (21); the door body (2211) is rotatably connected to the inner protection box (12) via the rotating shaft (2212); and the torsion spring (2213) is sleeved in the middle of the rotating shaft (2212).

6. The retractable electric energy metering junction box protection device according to claim 5, characterized in that: Two extension arms are provided at both ends of the torsion spring (2213), and the included angle of the extension arms is greater than 180°.

7. The retractable electric energy metering junction box protection device according to claim 6, characterized in that: A through hole penetrating the front and rear sides is provided on the right side of the top of the external wiring hole (21), and a plurality of through holes penetrating the front and rear sides are provided on the top of the internal wiring hole (22).

8. The retractable electric energy metering junction box protection device according to claim 7, characterized in that: The protection box (1) is also equipped with a safety lock, the width of which is equal to the distance between the front and rear of the outer protection box (11).

9. The retractable electric energy metering junction box protection device according to claim 8, characterized in that: Anti-theft doors are provided on the tops of the outer protection box (11) and the inner protection box (12).

10. The retractable electric energy metering junction box protection device according to claim 9, characterized in that: The anti-theft door on the top of the outer protection box (11) opens and closes toward the inner protection box (12), and the anti-theft door on the top of the inner protection box (12) opens and closes toward the outer protection box (11).

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