A magnetic interference-proof intelligent electric energy metering box

Abstract

The application relates to a magnetic interference prevention intelligent electric energy metering box, and relates to the technical field of electric energy metering boxes, which comprises a meter box body and a shielding assembly, the shielding assembly comprises a shielding box for mounting the meter box body, and a shielding cover which can be detachably mounted on the front side of the shielding box, the middle part of the left and right vertical sides of the shielding box is provided with a heat dissipation opening, and the lower part is provided with a wiring opening, a shielding net is fixed on the inner wall of the heat dissipation opening; a protection plate is rotationally connected to the edge of the left and right sides of the shielding box close to the back side, a plurality of fixing holes are formed in the protection plate; a limiting plate is fixed on the top surface of the two protection plates in the horizontal direction, and a locking piece is arranged on the top surface of the shielding box; when the electric energy metering box is carried, the protection plate is rotated to a protection state of being attached to the left and right sides of the shielding box, at this time, the protection plate can protect the shielding net at the heat dissipation opening, and the shielding performance of the electric meter box is guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of electricity metering boxes, and in particular to an intelligent electricity metering box that is resistant to magnetic interference. Background Technology

[0002] As smart grids rapidly develop towards higher precision and reliability, the performance requirements for electricity metering equipment are becoming increasingly stringent. As the core metering unit of the power system, meter boxes need to operate stably in complex electromagnetic environments. However, traditional meter boxes made of insulating plastic have weak resistance to magnetic interference. In strong magnetic field scenarios, internal electronic components are easily interfered with, leading to a significant increase in metering errors and even component damage, directly affecting the accuracy of power data acquisition. Furthermore, the widespread application of distributed energy resources and power electronic equipment in smart grids further exacerbates the complexity of the electromagnetic environment, making the protective deficiencies of traditional meter boxes increasingly prominent. Therefore, improving the magnetic interference resistance of meter boxes has become a key technical requirement for ensuring the reliable operation of smart grids.

[0003] Current technology typically employs a "double-layer protection" scheme to improve the anti-interference performance of meter boxes: the insulated plastic meter box is entirely installed inside a metal shielding box made of aluminum alloy or stainless steel. The conductivity of the metal creates a Faraday cage effect, effectively shielding against external electromagnetic interference. Simultaneously, to balance heat dissipation requirements and shielding effectiveness, the surface of the metal shielding box is designed with regularly arranged ventilation holes, and a woven shielding mesh is installed inside these holes. This shielding mesh is fixed by pressure strips or adhesive, allowing airflow for heat dissipation while blocking electromagnetic wave intrusion.

[0004] However, existing methods for fixing woven shielding mesh have significant drawbacks. Due to the use of non-rigid connections such as pressure strips or adhesives, the metal shielding box and its internal meter box are heavily weighted during transport. Since some elevators cannot access the area, two or more people must carry them up the stairs to the designated floor. This process easily leads to collisions with the stair railings, causing permanent dents in the shielding mesh around the ventilation holes. If the mesh's aperture deformation exceeds a certain percentage, its high-frequency shielding effectiveness will decrease significantly (e.g., when the aperture deformation is >10%, the high-frequency shielding effectiveness decreases by 15-20 dB), increasing the risk of electromagnetic interference penetration. Therefore, there is room for improvement. Summary of the Invention

[0005] The purpose of this application is to provide an intelligent energy metering box that is resistant to magnetic interference, which solves the problem that the shielding mesh of the metal shielding box and the internal meter box may be damaged by bumps during the overall transportation of the aforementioned related technologies, thus affecting the shielding performance of the meter box.

[0006] The intelligent energy metering box with anti-magnetic interference provided in this application adopts the following technical solution:

[0007] An intelligent energy metering box with anti-magnetic interference includes a meter box body and a shielding assembly. The shielding assembly includes a shielding box into which the meter box body is installed, and a shielding cover detachably installed on the front side of the shielding box. The shielding box has a heat dissipation vent in the middle of its left and right vertical sides and a wiring port at its lower part. A shielding mesh is fixed to the inner wall of the heat dissipation vent. Protective plates are rotatably connected to the edges of the left and right sides of the shielding box near the back side. The protective plates have several fixing holes. The protective plates can rotate towards the shielding cover to a protective state where they are flush with the left and right sides of the shielding box, and can rotate away from the shielding cover to an installation state where they are flush with the rear side of the shielding box. Limiting plates are fixed horizontally on the top surfaces of the two protective plates. A locking element is provided on the top surface of the shielding box. When the protective plates are in the protective state, the limiting plates are flush with the top surface of the shielding box, and the locking element locks the limiting plates. The locking element releases the locking of the limiting plates when the protective plates need to be adjusted to the installation state.

[0008] By adopting the above technical solution, during handling, the protective plate is rotated to a protective state that fits against the left and right sides of the shielding box. The locking mechanism then locks the limiting plate in place. At this point, the protective plate protects the shielding mesh at the heat dissipation vents, effectively preventing dents and deformation of the mesh due to collisions during handling. This prevents a significant decrease in high-frequency shielding effectiveness caused by excessive deformation of the mesh aperture, reducing the risk of electromagnetic interference penetration and ensuring the shielding performance of the meter box. When installation is required, the locking mechanism is released from the limiting plate, and the protective plate is rotated to an installation state flush with the rear side of the shielding box, without affecting normal installation operations. This design cleverly balances handling protection with installation convenience, improving the reliability and stability of the smart energy metering box in complex usage scenarios.

[0009] Optionally, when the protective plate is in the protective state, a first gripping groove is provided on the side away from the shielding box.

[0010] By adopting the above technical solution, the first gripping groove can provide a point of leverage for the handler during the handling of the smart electricity metering box, making the handling process easier and less strenuous, and reducing the risk of accidental collisions that could damage the equipment due to handling difficulties.

[0011] Optionally, the top surface of the shielding box has a vertical mounting hole, the locking element includes a locking rod that passes through the mounting hole, and an elastic element that drives the locking rod to move upward is provided on the inner wall of the mounting hole; the upper edge of the locking rod is provided with a guide slope, the lower end of the locking rod extends into the interior of the shielding box, and a locking slot is provided on the bottom surface of the limiting plate; the locking rod can move upward and be inserted into the locking slot when the protective plate is in the protective state.

[0012] By adopting the above technical solution, when the locking slot on the bottom surface of the limiting plate aligns with the locking rod, the locking rod moves upward and inserts into the locking slot under the action of the elastic element, achieving automatic locking. This operation is convenient and efficient. When it is necessary to unlock, simply open the shielding cover and pull the lower end of the locking rod to disengage it from the locking slot; it is simple and easy to do. This design not only ensures the stability of the protective plate in its protective state and effectively protects the shielding mesh, but also greatly facilitates the operation of staff, improves the flexibility and reliability of the intelligent energy metering box in actual use, and reduces the inconvenience and potential risks caused by complex operation.

[0013] Optionally, a mounting groove is provided on the upper opening edge of the mounting hole, and a locking retaining ring is fixedly provided on the outer periphery of the locking rod and slidably disposed in the mounting groove. The elastic element is a first spring whose two ends are respectively fixedly connected to the bottom wall of the mounting groove and the bottom side of the locking retaining ring.

[0014] By adopting the above technical solution, a first spring is used as the elastic element, with its two ends fixedly connected to the bottom wall of the mounting groove and the bottom side of the locking retaining ring, respectively. The structure is simple and stable, and can stably drive the locking rod upward to achieve automatic locking. This not only makes the locking and unlocking process smoother and more stable, reducing the possibility of malfunctions such as jamming, but also extends the service life of the components and improves the performance and stability of the entire anti-magnetic interference intelligent power metering box.

[0015] Optionally, two sealing plates are vertically mounted opposite each other on the inner wall of the shielding box near the wiring port. The lower ends of the two sealing plates are rotatably connected to the inner wall of the shielding box, and the rotating surface of the sealing plates is parallel to the inner wall of the shielding box to which they are connected. The lower end of the locking rod is equipped with a connector for controlling the rotation of the two sealing plates. The two sealing plates rotate in opposite directions when the locking rod moves down and in opposite directions when the locking rod moves up. A sealing notch is provided on the side of the sealing plates that are close to each other. When the two sealing notches rotate in opposite directions to a vertical state, they form a sealing cavity coaxial with the wiring port.

[0016] By adopting the above technical solution, when the locking lever moves down to unlock, the two sealing plates rotate in opposite directions to open, facilitating wiring operations; when the locking lever moves up to lock, the sealing plates rotate in opposite directions, and the two sealing notches form a sealing cavity that is coaxial with the wiring port, which can effectively seal the gap between the wiring port and the outer periphery of the cable, preventing external dust, debris and other objects from entering the shielding box and protecting the internal circuits and components.

[0017] Optionally, the connector includes two connecting rods rotatably mounted on the lower end of the locking rod. The connecting rods are parallel to the rotating surface of the sealing plate, and the lower end of the connecting rods is rotatably connected to the upper side of the sealing plate.

[0018] By adopting the above technical solution, when the locking rod moves up and down, it can precisely drive the sealing plate to rotate in opposite directions via the connecting rod, achieving effective sealing and opening of the connection port. This design has a simple structure and reliable transmission, reducing energy loss and failure rate during transmission. It ensures that the sealing plate accurately enters the correct position with the locking rod, further improving the performance of the intelligent power metering box in terms of protection and ease of operation, and ensuring stable operation of the equipment.

[0019] Optionally, the top of the shielding box is provided with a control rod that can slide back and forth towards the shielding cover. When the control rod slides along the guide slope to abut against the top surface of the locking rod, it drives the locking rod to move down.

[0020] By adopting the above technical solution, when the control lever slides along the guide ramp until it abuts against the top surface of the locking lever, it can drive the locking lever downwards. This design provides operators with a more convenient manual unlocking method, eliminating the need to directly press the locking lever; it can be easily achieved by sliding the control lever, making operation more effortless and convenient. At the same time, the guide ramp design makes the contact and transmission process between the control lever and the locking lever smoother, reducing jamming and improving the smoothness and reliability of operation.

[0021] Optionally, positioning rods are rotatably connected to the top surfaces of both ends of the control rod. The two positioning rods can rotate towards each other to a traction state where they are in contact with the top surface of the control rod, and rotate away from each other to a limit state where they are parallel to the control rod. When the two positioning rods are in the traction state, vertically upward positioning protrusions are fixed on the ends of the two positioning rods that are close to each other. Magnetic blocks are embedded on the sides of the two positioning protrusions that are close to each other at this time. When the protective plate is in the installation state, a limit notch is opened on the front side of the limit plate. The two magnetic blocks can attract each other when the two positioning rods are in the traction state, and the two positioning protrusions can slide into the limit notch on the same side when the two positioning rods are in the limit state.

[0022] By adopting the above technical solution, in the traction state, the positioning protrusion and the magnetic block attract each other, stably connecting the two positioning rods and facilitating the overall operation of the control rod. When the positioning rod is in the limit position, it can slide with the control rod and into the limit notch, limiting the state of the protective plate and preventing it from sliding arbitrarily and accidentally triggering unlocking. This design ensures the convenience of operation when the control rod needs to be unlocked, and effectively fixes the control rod in the non-unlocked state, preventing the locking rod from accidentally moving down due to misoperation, thus improving the safety and stability of the smart energy metering box.

[0023] Optionally, when the protective plate is in the installed state, a receiving groove is provided on the front side, and a receiving plate is provided in the receiving groove. The lower edge of the receiving plate is rotatably connected to the two inner walls of the receiving groove, and the receiving plate can rotate outward to a horizontal state. Two positioning holes are provided on the left and right sides of the shielding box. A receiving rod is slidably installed in the positioning hole, and a reset component is installed to drive the receiving rod to slide inward. A guide slope is provided on the inner edge of the receiving rod. When the two sealing plates rotate in opposite directions, they squeeze the inner end of the receiving rod, causing the receiving plate to slide outward. When the receiving plate is in a horizontal state, the bottom surface of the receiving plate can abut against the top surface of the outer end of the receiving rod.

[0024] By adopting the above technical solution, a receiving rod is slidably installed in the positioning hole on the side of the shielding box, equipped with a reset component. Utilizing a guiding ramp, when the two sealing plates rotate in opposite directions, pressing the inner end of the receiving rod, the receiving rod can be pushed outwards, allowing the receiving plate to rotate stably to a horizontal position and abut against it, forming a stable support. This design provides a convenient platform for placing tools or temporarily placing cables during wiring operations, improving operational convenience. After wiring is completed, the sealing plates rotate in opposite directions to reset, the receiving rod retracts under the action of the reset component, and the receiving plate can be retracted to accommodate the recess, without affecting the overall structure and appearance. Overall, this solution optimizes the wiring operation process, enhances the practicality of the equipment, and enables the smart energy metering box to better meet the needs of different usage scenarios.

[0025] Optionally, the receiving plate has a second gripping groove on the side away from the protective plate when it is rotated to a vertically upward position.

[0026] By adopting the above technical solution, the setting of the second grip groove provides the operator with a convenient point of leverage. When it is necessary to rotate the receiving plate, the operator can easily put their fingers into the grip groove to apply force, making the rotation operation of the receiving plate more convenient and labor-saving.

[0027] In summary, this application includes the following beneficial technical effects:

[0028] During transport, rotate the protective plate to a position where it is flush with the left and right sides of the shielding box. Lock the limiting plate using the locking mechanism. At this point, the protective plate protects the shielding mesh at the heat dissipation vents, effectively preventing dents and deformation of the mesh during transport. This prevents a significant decrease in high-frequency shielding effectiveness due to excessive deformation of the mesh aperture, reducing the risk of electromagnetic interference penetration and ensuring the shielding performance of the meter box. When installation is required, release the locking mechanism from the limiting plate and rotate the protective plate to a position flush with the rear side of the shielding box. This will not affect normal installation operations. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0030] Figure 2 This is a schematic diagram illustrating the installation and assembly of the protective components in an embodiment of this application;

[0031] Figure 3 This is a cross-sectional structural diagram illustrating the installation and mating of the locking component in an embodiment of this application;

[0032] Figure 4 This is a partial cross-sectional view of the locking lever installation and engagement in an embodiment of this application;

[0033] Figure 5 This is a partial cross-sectional view of the installation and assembly of the sealing components in an embodiment of this application;

[0034] Figure 6 This is a partial cross-sectional view of the installation and assembly of the sealing plate according to an embodiment of this application;

[0035] Figure 7 This is a partial structural diagram illustrating the installation and fit of the control lever in an embodiment of this application;

[0036] Figure 8 This is a partial cross-sectional view of the control lever installation and fit in an embodiment of this application;

[0037] Figure 9 This is a partial structural diagram illustrating the installation and cooperation of the positioning protrusion and the limiting notch in an embodiment of this application;

[0038] Figure 10 This is a partial structural diagram illustrating the installation and assembly of the receiving plate in an embodiment of this application;

[0039] Figure 11 This is a partial cross-sectional view of the structure of the control lever and the reset component in an embodiment of this application.

[0040] Figure 12 This is a partial cross-sectional structural diagram illustrating the installation and fit of the control lever in an embodiment of this application.

[0041] In the diagram, 1. Meter box body; 2. Shielding assembly; 21. Shielding box; 211. Heat dissipation vent; 212. Wiring port; 213. Shielding mesh; 214. Mounting hole; 2141. Mounting groove; 215. Positioning hole; 2151. Positioning groove; 22. Shielding cover; 3. Protective assembly; 31. Protective plate; 311. Fixing hole; 312. First grip groove; 313. Accommodating groove; 32. Limiting plate; 321. Locking slot; 322. Limiting notch; 33. Receiving plate; 331. Second grip groove; 4. Locking component; 41. Locking rod; 411. Locking retaining ring; 42. Elastic component; 421. First spring; 5. Sealing assembly; 51. Sealing plate; 511. Sealing notch; 512. Elastic pad; 52. Connecting component; 521. Connecting rod; 6. Control rod; 61. Positioning rod; 62. Positioning protrusion; 63. Magnetic block; 7. Receiving rod; 71. Receiving retaining ring; 8. Reset component; 81. Second spring. Detailed Implementation

[0042] The present application will be further described in detail below with reference to all the accompanying drawings.

[0043] Example:

[0044] Reference Figure 1 and Figure 2 A smart energy metering box with anti-magnetic interference includes a meter box body 1 and a shielding component 2. The shielding component 2 includes a shielding box 21 for the meter box body 1 to be installed in, and a shielding cover 22 that can be detachably installed on the front side of the shielding box 21. A heat dissipation vent 211 is provided in the middle of the left and right vertical sides of the shielding box 21, and a wiring port 212 is provided at the bottom. A shielding mesh 213 is fixed on the inner wall of the heat dissipation vent 211.

[0045] The shielding box 21 is equipped with a protective component 3 on its exterior. When the power metering box is moved, the protective component 3 is used to protect the shielding mesh 213 inside the heat dissipation port 211. When the power metering box is installed, the protective component 3 is removed from the shielding mesh 213.

[0046] Reference Figure 2 and Figure 3 The protective component 3 includes protective plates 31 rotatably connected to the left and right sides of the shielding box 21 near the back edge, and the protective plates 31 are provided with a plurality of fixing holes 311; limiting plates 32 are fixed on the top surface of the two protective plates 31 in the horizontal direction, and locking members 4 are provided on the top surface of the shielding box 21; the protective plates 31 can be rotated toward the shielding cover 22 to a protective state that fits against the left and right sides of the shielding box 21, and rotated away from the shielding cover 22 to an installation state that is flush with the rear side of the shielding box 21; when the protective plate 31 is in the protective state, a first gripping groove 312 is provided on the side away from the shielding box 21;

[0047] When moving the electricity metering box, the protective plate 31 is adjusted to the protective state. At this time, the limiting plate 32 is attached to the top surface of the shielding box 21 and locked by the locking piece 4. The worker's hand can then be inserted into the first gripping groove 312 to move the electricity metering box. When the electricity metering box is installed on the corresponding vertical mounting surface, and the protective plate 31 needs to be adjusted to the installation state, the locking piece 4 can release the locking of the limiting plate 32. Then, the two protective plates 31 are rotated back to back to the installation state, and finally, screws are screwed into the pre-drilled screw holes on the wall after passing through the fixing holes 311.

[0048] Reference Figure 3 and Figure 4 The top surface of the shielding box 21 has a vertical mounting hole 214. The locking component 4 includes a locking rod 41 that passes through the mounting hole 214. An elastic component 42 that drives the locking rod 41 to move upward is provided on the inner wall of the mounting hole 214. The upper edge of the locking rod 41 is provided with a guide slope. The lower end of the locking rod 41 extends into the interior of the shielding box 21. A locking slot 321 is provided on the bottom surface of the limiting plate 32.

[0049] An installation groove 2141 is provided on the upper opening edge of the mounting hole 214. A locking retaining ring 411 is integrally formed on the outer periphery of the locking rod 41 and slides in the installation groove 2141. The elastic element 42 is a first spring 421 whose two ends are fixedly connected to the bottom wall of the installation groove 2141 and the bottom side of the locking retaining ring 411, respectively.

[0050] When the protective plate 31 is in the protective state, the locking rod 41 can move upward and be inserted into the locking slot 321 under the elastic force of the elastic element 42; when it is necessary to release the protective state of the protective plate 31, the shielding cover 22 can be opened, and then the staff can pull the lower end of the locking rod 41 to drive the locking rod 41 downward, so that the upper end of the locking rod 41 is dislodged from the locking slot 321.

[0051] Reference Figure 3 , Figure 5 and Figure 6 The shielding box 21 is equipped with a sealing assembly 5, which includes two sealing plates 51 installed vertically opposite each other on the inner wall of the shielding box 21 near the wiring port 212. The lower ends of the two sealing plates 51 are rotatably connected to the inner wall of the shielding box 21, and the rotating surface of the sealing plates 51 is parallel to the inner wall of the shielding box 21 to which they are connected. The lower end of the locking rod 41 is equipped with a connecting piece 52 for controlling the rotation of the two sealing plates 51.

[0052] The connector 52 includes two connecting rods 521 rotatably mounted on the lower end of the locking rod 41. The connecting rods 521 are parallel to the rotating surface of the sealing plate 51, and the lower end of the connecting rods 521 is rotatably connected to the upper side of the sealing plate 51. The two sealing plates 51 rotate in opposite directions when the locking rod 41 moves down and rotate in opposite directions when the locking rod 41 moves up. A sealing notch 511 is provided on the side of the sealing plates 51 that are close to each other, and an elastic pad 512 made of rubber is fixed on the inner wall of the sealing notch 511.

[0053] When the two sealing plates 51 rotate to a vertical position, the two sealing gaps 511 form a sealing cavity coaxial with the connection port 212. This allows the sealing plates 51 and the elastic pads 512 to press against the outer periphery of the external cable passing through the connection port 212, reducing the possibility of external impurities entering the shielding box 21 through the gap between the connection port 212 and the cable.

[0054] Reference Figure 7 The top of the shielding box 21 is provided with a control rod 6 that can slide back and forth towards the shielding cover 22. When the control rod 6 slides along the guide slope to the state of abutting the top surface of the locking rod 41, it drives the locking rod 41 to move down. The control rod 6 is slidably connected to the top of the shielding box 21 through the dovetail slide rail and the dovetail slide groove. The conventional sliding fit is not described in detail here.

[0055] Reference Figure 8 and Figure 9 Positioning rods 61 are rotatably connected to the top surfaces of both ends of the control rod 6. The two positioning rods 61 can rotate towards each other to a traction state that is in contact with the top surface of the control rod 6, and rotate away from each other to a limit state that is parallel to the control rod 6. When the two positioning rods 61 are in the traction state, vertically upward positioning protrusions 62 are integrally formed on the ends that are close to each other. At this time, the sides of the two positioning protrusions 62 that are close to each other are each embedded with two magnetic blocks 63 with opposite polarities. When the protective plate 31 is in the installation state, the limiting plate 32 has a limiting notch 322 on its front side.

[0056] When the two positioning rods 61 are in the traction state, there is a certain gap between the two positioning protrusions 62, which will not interfere with the rotation of the two positioning rods 61. The two magnetic blocks 63 can attract each other at this time. At this time, the operator can directly hold the two positioning protrusions 62 to drive the control rod 6 to slide back and forth for adjustment. When the two positioning rods 61 are in the limit state, the two positioning protrusions 62 can slide into the limit notch 322 on the same side as the control rod 6 slides, so as to pre-lock the protective plate 31 in the installation state, reducing the possibility that the protective plate 31 will rotate relative to the control rod 31 again after the screw passes through the fixing hole 311.

[0057] Reference Figure 10 , Figure 11 and Figure 12When the protective plate 31 is in the installation state, a receiving groove 313 is provided on the front side. A receiving plate 33 is provided in the receiving groove 313. The lower edge of the receiving plate 33 is rotatably connected to the two inner walls of the receiving groove 313. The receiving plate 33 can be rotated outward to a horizontal state. Two positioning holes 215 are provided on the left and right sides of the shielding box 21. A receiving rod 7 is slidably provided in the positioning hole 215, and a reset member 8 is installed to drive the receiving rod 7 to slide inward.

[0058] The inner end edge of the receiving rod 7 is provided with a guide slope, and the inner opening edge of the positioning hole 215 is provided with a positioning groove 2151. The outer periphery of the receiving rod 7 is integrally formed with a receiving retaining ring 71 that slides in the positioning groove 2151. The reset member 8 is a second spring 81 whose two ends are fixedly connected to the inner wall of the positioning groove 2151 and the inner side of the receiving retaining ring 71, respectively.

[0059] When the two sealing plates 51 rotate in opposite directions, they press against the inner end of the receiving rod 7, causing the receiving plate 33 to slide outward. When the receiving plate 33 is in a horizontal state, its bottom surface can abut against the top surface of the outer end of the receiving rod 7. The receiving plate 33 in this state can be used for temporary placement of maintenance tools during later maintenance.

[0060] Reference Figure 10 When the receiving plate 33 is rotated to a vertical position, a second gripping groove 331 is provided on the side away from the protective plate 31. The operator can insert his / her fingers into the second gripping groove 331 to quickly rotate the receiving plate 33 out of the accommodating sink 313.

[0061] The implementation principle of this application embodiment is as follows:

[0062] Handling Protection: During handling, the protective plate 31 is rotated to the protective state and fits against the side of the shielding box 21, the limiting plate 32 fits against the top surface of the shielding box 21, and the locking rod 41 is inserted into the locking slot 321 under the action of the elastic element 42 to complete the fixation. The operator can then handle the equipment by inserting their palm into the first gripping slot 312. At this time, the protective plate 31 covers the heat dissipation vent 211 to prevent damage to the shielding mesh 213 during handling.

[0063] Installation and Fixing: During installation, open the shielding cover 22, pull the locking rod 41 down to disengage it from the locking slot 321, rotate the protective plate 31 to the installation position and align it with the rear side of the shielding box 21, and screw the screws into the wall through the fixing holes 311 to complete the fixation. Rotate the positioning rod 61 to the limit position and slide it into the limit notch 322 to pre-lock the protective plate 31 to prevent rotation and facilitate operation.

[0064] Sealing of connector 212: Adjust the protective plate 31 to the installation position, and at the same time slide the control lever 6 to a position that is misaligned with the top surface of the locking lever 41. When the locking lever 41 moves upward, the sealing plate 51 rotates in opposite directions. The sealing notch 511 and the elastic pad 512 enclose each other to form a sealing cavity, which tightly wraps the external cable and reduces the entry of impurities.

[0065] During later maintenance: the control lever 6 slides along the guide slope to abut against the top surface of the locking lever 41, causing the locking lever 41 to move down, thereby causing the two sealing plates 51 to rotate in opposite directions, so that the sealing plates 51 press against the inner end of the receiving rod 7 along the guide slope, causing the receiving plate 33 to slide outward; then the receiving plate 33 is rotated to a horizontal state, and the bottom surface of the receiving plate 33 can abut against the top surface of the outer end of the receiving rod 7, forming a temporary placement platform supported by the receiving rod 7, improving the convenience of operation.

[0066] 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 smart energy metering box with anti-magnetic interference, comprising a meter box body (1) and a shielding component (2), wherein the shielding component (2) comprises a shielding box (21) into which the meter box body (1) is installed, and a shielding cover (22) that can be detachably installed on the front side of the shielding box (21), wherein a heat dissipation vent (211) is provided in the middle of the left and right vertical sides of the shielding box (21), and a wiring port (212) is provided at the bottom, and a shielding mesh (213) is fixed on the inner wall of the heat dissipation vent (211); Its features are, The shielding box (21) has a protective plate (31) rotatably connected to the left and right sides near the back edge. The protective plate (31) has several fixing holes (311). The protective plate (31) can be rotated towards the shielding cover (22) to a protective state that fits against the left and right sides of the shielding box (21), and rotated away from the shielding cover (22) to an installation state that is flush with the rear side of the shielding box (21). A limiting plate (32) is fixed on the top surface of the two protective plates (31) along the horizontal direction, and a locking member (4) is provided on the top surface of the shielding box (21); the limiting plate (32) is in contact with the top surface of the shielding box (21) when the protective plate (31) is in the protective state, and the locking member (4) can lock the limiting plate (32) at this time; the locking member (4) can release the locking of the limiting plate (32) when the protective plate (31) needs to be adjusted to the installation state; The shielding box (21) has a mounting hole (214) on its top surface in the vertical direction. The locking member (4) includes a locking rod (41) that passes through the mounting hole (214). An elastic member (42) that drives the locking rod (41) to move upward is provided on the inner wall of the mounting hole (214). The upper edge of the locking rod (41) is provided with a guide slope. The lower end of the locking rod (41) extends into the interior of the shielding box (21). A locking slot (321) is provided on the bottom surface of the limiting plate (32). When the protective plate (31) is in the protective state, the locking rod (41) can move upward and be inserted into the locking slot (321). Two sealing plates (51) are vertically mounted opposite each other on the inner wall of the shielding box (21) near the wiring port (212). The lower ends of the two sealing plates (51) are rotatably connected to the inner wall of the shielding box (21), and the rotating surface of the sealing plates (51) is parallel to the inner wall of the shielding box (21) to which they are connected. The lower end of the locking rod (41) is equipped with a connecting piece (52) for controlling the rotation of the two sealing plates (51). The two sealing plates (51) rotate in opposite directions when the locking rod (41) moves down and rotate in opposite directions when the locking rod (41) moves up. The sealing plates (51) are rotated in opposite directions; sealing notches (511) are provided on the sides of the sealing plates (51) that are close to each other. When the two sealing notches (511) are rotated in opposite directions to a vertical state, they form a sealing cavity coaxial with the wiring port (212); the top of the shielding box (21) is provided with a control rod (6) that can slide back and forth towards the shielding cover (22). When the control rod (6) slides along the guide slope to the state of abutting against the top surface of the locking rod (41), it drives the locking rod (41) to move down; Positioning rods (61) are rotatably connected to the top surfaces of both ends of the control rod (6). The two positioning rods (61) can rotate towards each other to a traction state that is in contact with the top surface of the control rod (6) and rotate away from each other to a limit state that is parallel to the control rod (6). When the two positioning rods (61) are in the traction state, vertically upward positioning protrusions (62) are fixed on the ends that are close to each other. At this time, magnetic blocks (63) are embedded on the sides that are close to each other. When the protective plate (31) is in the installation state, the limiting plate (32) has a limit notch (322) on the front side. When the two positioning rods (61) are in the traction state, the two magnetic blocks (63) can attract each other. When the two positioning rods (61) are in the limit state, the two positioning protrusions (62) can slide into the limit notch (322) on the same side when the control rod (61) is in the limit state. When the protective plate (31) is in the installation state, a receiving groove (313) is provided on the front side. A receiving plate (33) is provided in the receiving groove (313). The lower edge of the receiving plate (33) is rotatably connected to the two inner walls of the receiving groove (313). The receiving plate (33) can rotate outward to a horizontal state. Two positioning holes (215) are provided on the left and right sides of the shielding box (21). A receiving rod (7) is slidably provided in the positioning hole (215), and a reset piece (8) is installed to drive the receiving rod (7) to slide inward. A guide slope is provided on the inner edge of the receiving rod (7). When the two sealing plates (51) rotate in opposite directions, they squeeze the inner end of the receiving rod (7) to make the receiving plate (33) slide outward. When the receiving plate (33) is in a horizontal state, the bottom surface can abut against the top surface of the outer end of the receiving rod (7).

2. The anti-magnetic interference intelligent electric energy metering box according to claim 1, characterized in that, When the protective plate (31) is in the protective state, a first gripping groove (312) is provided on the side away from the shielding box (21).

3. The anti-magnetic interference intelligent electric energy metering box according to claim 1, characterized in that, The upper opening edge of the mounting hole (214) is provided with a mounting groove (2141), and a locking retaining ring (411) is fixedly provided on the outer periphery of the locking rod (41) and slidably disposed in the mounting groove (2141). The elastic element (42) is a first spring (421) whose two ends are fixedly connected to the bottom wall of the mounting groove (2141) and the bottom side of the locking retaining ring (411) respectively.

4. The anti-magnetic interference intelligent electric energy metering box according to claim 1, characterized in that, The connector (52) includes two connecting rods (521) rotatably mounted on the lower end of the locking rod (41). The connecting rods (521) are parallel to the rotating surface of the sealing plate (51), and the lower end of the connecting rods (521) is rotatably connected to the upper side of the sealing plate (51).

5. The anti-magnetic interference intelligent electric energy metering box according to claim 1, characterized in that, The receiving plate (33) has a second gripping groove (331) on the side away from the protective plate (31) when it is rotated to a vertically upward position.

Images