Wall-mounted electric energy metering box with detachable back plate
By introducing spring-loaded components and operating components into the wall-mounted energy metering box, the problem of laborious assembly and disassembly under the snap-fit connection method is solved, realizing efficient disassembly and maintenance of the metering box, and improving the convenience and safety of operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG HUAYAO ELECTRIC TECH CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-06-16
AI Technical Summary
The existing snap-fit connection method of wall-mounted electricity metering boxes requires a lot of force to assemble and disassemble, which can damage components and is time-consuming and laborious, affecting work efficiency.
The wall-mounted electricity metering box with a detachable back panel uses a spring-loaded assembly and an operating assembly to lock and unlock the main body of the metering box, simplifying the operation process. The spring-loaded assembly locks or unlocks the main body of the metering box, while the operating assembly controls the action of the spring-loaded assembly.
It improves the efficiency of assembling and disassembling the metering box, reduces damage to components, and is simple to operate, saving time and effort, thus improving the maintenance efficiency of staff.
Smart Images

Figure CN224367356U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of metering box technology, specifically to a wall-mounted power metering box with a detachable back panel. Background Technology
[0002] A metering box is a combination of current transformers and measuring instruments. It encompasses all the necessary metering instruments and auxiliary equipment for measuring electrical energy, including electricity meters, voltage and current transformers and their secondary circuits, electricity metering panels, cabinets, and boxes. Metering boxes can be installed in a suspended or floor-mounted manner. To ensure installation quality, suspended boxes are typically fixed with expansion bolts, with bolt sizes meeting safety and secure requirements for outdoor installation. Existing wall-mounted electricity metering boxes are usually only fixed with bolts, requiring tools for installation and disassembly. Furthermore, the inability to position the metering box during installation makes operation cumbersome and inconvenient. Since wall-mounted electricity metering boxes are usually installed at a high location, subsequent inspection and maintenance often require workers to climb to a height, which is not only inconvenient but also increases the risk of accidents.
[0003] To solve the above-mentioned technical problems, Chinese Patent No. CN221633203U discloses a wall-mounted electricity metering box, which includes a metering box body, a wall-mounting bracket, and a lifting bracket. The metering box body has plug-in plates on both sides of the rear part and positioning strips on both sides of the bottom part. The wall-mounting bracket includes a support plate and a rear plate, and the rear plate has plug-in slots on both sides of the front part.
[0004] While the existing technical solution described above allows for flexible adjustment of the height of the metering box after installation, it assembles the main body of the metering box by means of a snap-fit connection. The interference fit between the snap-fit and the pin hole means that workers need to apply a lot of force to move the snap-fit inside the pin hole during assembly and disassembly, which can easily cause damage to the parts. The assembly and disassembly process is time-consuming and labor-intensive, which in turn affects work efficiency. Utility Model Content
[0005] The purpose of this utility model is to provide a wall-mounted energy metering box with a detachable back panel, in order to solve the problem mentioned in the background art that the metering box is assembled by means of a snap-fit connection. The interference fit between the snap-fit and the pin hole makes it necessary for workers to apply a lot of force to move the snap-fit inside the pin hole during assembly and disassembly, which can easily cause damage to the parts. The disassembly and assembly process is time-consuming and laborious, which in turn affects work efficiency.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A wall-mounted energy metering box with a detachable back panel includes a base frame, on which a movable adjustment assembly is mounted, and on which a horizontal plate is mounted. A back panel body is mounted on one side of the horizontal plate, and a metering box body overlaps on the side of the back panel body away from the horizontal plate. A connecting plate is mounted on one side of the outer wall of the metering box body, and the connecting plate is engaged with the back panel body via a locking mechanism. The locking mechanism includes a spring-loaded component and an operating component. The spring-loaded component is used to lock or unlock the position of the metering box body, and the operating component is used to control the spring-loaded component.
[0008] As a preferred embodiment of this utility model, the spring-loaded assembly includes a connecting column installed at the other end of the connecting plate. An operating groove is provided at one end of the connecting column, and a movable rod is movably connected to one end of the connecting column. A movable sleeve is rotatably connected to one side of the outer wall of the movable rod, and a protruding plate is installed on one side of the outer wall of the movable sleeve.
[0009] As a preferred embodiment of this utility model, a connecting rod is rotatably connected to one side of the convex plate, a torsion spring is installed between one end of the outer wall of the connecting rod and the inner wall of the convex plate, a spring pressure plate is fixedly sleeved on the end of the outer wall of the connecting rod away from the convex plate and the torsion spring, and a spring pressure groove is opened on one side of the outer wall of the connecting column to slide with the spring pressure plate.
[0010] As a preferred embodiment of this utility model, a rubber pad is embedded and installed on one side of the outer wall of the back plate body, and a mating hole extending into the interior of the back plate body is opened on one side of the rubber pad. A pressing groove is opened on one side of the mating hole inside the back plate body, and push plates are installed at both ends of the outer wall of the connecting column.
[0011] As a preferred embodiment of this utility model, the operating component includes a reset groove located inside the connecting column on one side of the operating groove, a reset plate slidably connected to the inside of the reset groove, a first spring installed between one side of the reset plate and the inner wall of the reset groove, an abutment block installed at one end of the movable rod, an abutment groove located inside the connecting column on the other side of the operating groove, the length of the abutment groove being greater than the length of the protruding end of the abutment block, the protruding end of the abutment block being slidably connected to the abutment groove, and a pull ring rotatably connected to one end of the movable rod extending to the outside of the connecting column.
[0012] As a preferred embodiment of this utility model, the movable adjustment component includes a linkage groove opened at one end of the base frame, a rotating wheel rotatably connected to one end of the outer wall of the base frame, a first bevel gear installed at one end of the rotating wheel extending to the inner side of the linkage groove, and a threaded rod rotatably connected to one end of the inner side of the linkage groove, the threaded rod being rotatably connected to the base frame.
[0013] As a preferred embodiment of this utility model, a second bevel gear is fixedly sleeved on one end of the outer wall of the threaded rod located inside the linkage groove. The second bevel gear is meshed with the first bevel gear. A sliding rod is installed on the other end of the top of the base frame. The horizontal plate is threadedly connected to the threaded rod, and the horizontal plate is slidably connected to the sliding rod.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] In this invention, the position of the metering box body is locked or unlocked by the spring-loaded component, and the operating component controls the spring-loaded component. The structure is simple and the operation is convenient. It is convenient for staff to assemble and disassemble the metering box body so that staff can carry out timely inspection and maintenance. The operation is more time-saving and labor-saving, and further improves work efficiency. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a partial three-dimensional structural diagram of the connecting column of this utility model;
[0018] Figure 3 This is a partial cross-sectional view of the connecting column of this utility model;
[0019] Figure 4 This is a partial cross-sectional view of the base frame of this utility model.
[0020] In the diagram: 1. Base frame; 2. Horizontal plate; 3. Back plate main body; 4. Metering box main body; 5. Connecting column; 6. Movable rod; 7. Connecting rod; 8. Protruding plate; 9. Spring pressure plate; 10. Rubber pad; 11. Push plate; 12. Reset plate; 13. First spring; 14. Abutment block; 15. Rotating wheel; 16. First bevel gear; 17. Threaded rod; 18. Slide rod. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0022] Example: Please refer to Figures 1-4 This utility model provides a technical solution:
[0023] The wall-mounted energy metering box with a detachable back panel includes a base frame 1. An adjustable assembly is mounted on the base frame 1, and a horizontal plate 2 is mounted on the adjustable assembly. A back panel body 3 is mounted on one side of the horizontal plate 2. A metering box body 4 overlaps on the side of the back panel body 3 away from the horizontal plate 2. A connecting plate is mounted on one side of the outer wall of the metering box body 4. The connecting plate is engaged with the back panel body 3 via a locking mechanism. The locking mechanism includes a spring-loaded component and an operating component. The spring-loaded component is used to lock or unlock the position of the metering box body 4, and the operating component controls the spring-loaded component. This device features a simple structure and convenient operation, allowing staff to easily assemble and disassemble the metering box body 4 for timely inspection and maintenance. The operation is time-saving and labor-saving, further improving work efficiency.
[0024] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the spring-loaded assembly includes a connecting post 5 installed at the other end of the connecting plate. An operating groove is provided at one end of the connecting post 5. A movable rod 6 is movably connected to one end of the connecting post 5. A movable sleeve is rotatably connected to one side of the outer wall of the movable rod 6. A protruding plate 8 is installed on one side of the outer wall of the movable sleeve. A connecting rod 7 is rotatably connected to one side of the protruding plate 8. A torsion spring is installed between one end of the outer wall of the connecting rod 7 and the inner wall of the protruding plate 8. A spring-loaded plate 9 is fixedly sleeved at the end of the outer wall of the connecting rod 7 away from the protruding plate 8 and the torsion spring. A spring-loaded groove is provided on one side of the outer wall of the connecting post 5, which is slidably connected to the spring-loaded plate 9. First, during assembly, one side of the metering box body 4 is attached to the surface of the back plate body 3, so that the connecting post 5 slides in through the docking hole. As the metering box body 4 and the back plate body 3 gradually approach each other, after the spring-loaded plate 9 on the connecting post 5 contacts the port of the docking hole, the connecting rod 7 and the torsion spring are compressed, causing the spring-loaded plate 9 to deflect.
[0025] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, a rubber pad 10 is embedded in one side of the outer wall of the back plate body 3. A mating hole extending into the back plate body 3 is opened on one side of the rubber pad 10. A pressing groove is opened on one side of the mating hole inside the back plate body 3. Push plates 11 are installed at both ends of the outer wall of the connecting column 5. Then, the connecting column 5 is pushed into the operating groove through the inner side of the spring pressing groove. After the bottom end of the connecting column 5 contacts the inner wall of the pressing groove, the spring pressing plate 9, which loses resistance, can be pushed out from the inner side of the spring pressing groove by the torsion spring. At this time, the push plate 11 is also pressing the rubber pad 10 to retract. After the spring pressing plate 9 is completely ejected, the connecting column 5 can be loosened back, and the rubber pad 10 will rebound and reset, causing one end of the spring pressing plate 9 to abut against the inner wall of the pressing groove, thus locking the metering box body 4.
[0026] In this embodiment, as Figure 2 , Figure 3 and Figure 4 As shown, the operating components include a reset groove located inside the connecting column 5 on one side of the operating slot. A reset plate 12 is slidably connected to the inside of the reset groove. A first spring 13 is installed between one side of the reset plate 12 and the inner wall of the reset groove. An abutment block 14 is installed at one end of the movable rod 6. An abutment groove is opened inside the connecting column 5 on the other side of the operating slot. The length of the abutment groove is greater than the length of the protruding end of the abutment block 14. The protruding end of the abutment block 14 is slidably connected to the abutment groove. A pull ring is rotatably connected to one end of the movable rod 6 extending to the outside of the connecting column 5. Furthermore, when collecting and maintaining the metering box body 4, one end of the connecting column 5 can be pressed to drive the two sets of push plates 11 to squeeze the rubber pad 10 again to retract. After the spring plate 9 moves away from the inner wall of the pressing groove, the pull ring can be engaged to move the movable rod 6 downward. When the movable rod 6 moves, the reset plate 12 can also move the first spring 13 inside the reset groove until the abutment block 14 is close to the abutment groove. Then the movable rod 6 can be twisted to rotate the protruding end of the abutment block 14 to the inside of the abutment groove. As the movable rod 6 moves, the protruding plate 8 also moves downward, forcing the spring plate 9 to contact the inner wall of the spring pressing groove, causing the connecting rod 7 and the torsion spring to retract again. At this time, it can be loosened a distance back, allowing the first spring 13 to drive the abutment block 14 on the movable rod 6 to abut against the inner wall of the abutment groove, so that the spring plate 9 is in the retracted state. At this time, the connecting column 5 can be pulled out and separated together with the metering box body 4.
[0027] In this embodiment, as Figure 2 , Figure 3 and Figure 4 As shown, the movable adjustment assembly includes a linkage groove opened at one end inside the base frame 1. A rotating wheel 15 is rotatably connected to one end of the outer wall of the base frame 1. A first bevel gear 16 is installed at the end of the rotating wheel 15 extending into the inner side of the linkage groove. A threaded rod 17 is rotatably connected to the inner side of the linkage groove. The threaded rod 17 is rotatably connected to the base frame 1. A second bevel gear is fixedly sleeved at the end of the outer wall of the threaded rod 17 located inside the linkage groove. The second bevel gear is meshed with the first bevel gear 16. A slide rod 18 is installed at the other end of the top of the base frame 1. The horizontal plate 2 is threadedly connected to the threaded rod 17, and the horizontal plate 2 is slidably connected to the slide rod 18. Furthermore, by holding the rotating wheel 15, the first bevel gear 16 is rotated, which in turn drives the second bevel gear to rotate, thereby driving the threaded rod 17 to rotate as well. This allows the horizontal plate 2, in conjunction with the slide rod 18, to drive the back plate body 3 and the metering box body 4 to rise or fall smoothly to adjust the position.
[0028] The implementation principle of the wall-mounted energy metering box with a detachable back panel in this embodiment is as follows: During assembly, one side of the metering box body 4 is attached to the surface of the back panel body 3, so that the connecting post 5 slides in through the docking hole. As the metering box body 4 and the back panel body 3 gradually approach each other, after the spring plate 9 on the connecting post 5 contacts the port of the docking hole, the connecting rod 7 and the torsion spring are compressed, causing the spring plate 9 to deflect and enter the inner side of the operating groove. After the bottom end of the connecting post 5 contacts the inner wall of the pressing groove, it loses its tension. The spring-loaded pressure plate 9 can be ejected from the inside of the pressure groove by the torsion spring. At this time, the push plate 11 is also squeezing the rubber pad 10 to retract. After the spring-loaded pressure plate 9 is fully ejected, the connecting column 5 can be loosened back, and the rubber pad 10 will spring back to its original position, causing one end of the spring-loaded pressure plate 9 to abut against the inner wall of the pressure groove, thus locking the metering box body 4. When collecting and maintaining the metering box body 4, one end of the connecting column 5 can be pressed down to drive the two sets of push plates 11 to squeeze the rubber pad 10 again to retract. After the inner wall of the pressing groove is removed, the pull ring can be fastened to drive the movable rod 6 to move down. When the movable rod 6 moves, the reset plate 12 can also drive the first spring 13 to move inside the reset groove until the abutment block 14 is close to the abutment groove. Then the movable rod 6 can be twisted to rotate the protruding end of the abutment block 14 to the inside of the abutment groove. While the movable rod 6 is moving, the protruding plate 8 also moves down, forcing the spring plate 9 to contact the inner wall of the spring groove, so that the connecting rod 7 and the torsion spring retract again. At this time, it can be loosened back a distance, so that the first spring 13 drives the abutment block 14 on the movable rod 6 to abut against the inner wall of the abutment groove, so that the spring plate 9 is in the retracted state. At this time, the connecting column 5 can be pulled out and separated together with the metering box body 4. Hold the rotating wheel 15 to drive the first bevel gear 16 to rotate, so that the first bevel gear 16 drives the second bevel gear to rotate, thereby driving the threaded rod 17 to rotate together. Let the horizontal plate 2 cooperate with the sliding rod 18 to drive the back plate body 3 and the metering box body 4 to rise or fall smoothly to adjust the position.
[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A wall-mounted energy metering box with a detachable back panel, comprising a base frame (1), characterized in that: An adjustable assembly is installed on the base frame (1), a horizontal plate (2) is installed on the adjustable assembly, a back plate body (3) is installed on one side of the horizontal plate (2), a metering box body (4) is attached to the side of the back plate body (3) away from the horizontal plate (2), a connecting plate is installed on one side of the outer wall of the metering box body (4), and the connecting plate is engaged with the back plate body (3) by a locking mechanism. The locking mechanism includes a spring-loaded assembly and an operating assembly. The spring-loaded assembly is used to lock or unlock the position of the metering box body (4), and the operating assembly is used to control the spring-loaded assembly.
2. The wall-mounted energy metering box with a detachable back panel according to claim 1, characterized in that: The spring-loaded assembly includes a connecting column (5) installed at the other end of the connecting plate. An operating groove is provided at one end of the connecting column (5). A movable rod (6) is movably connected to one end of the connecting column (5). A movable sleeve is rotatably connected to one side of the outer wall of the movable rod (6). A protruding plate (8) is installed on one side of the outer wall of the movable sleeve.
3. The wall-mounted energy metering box with a detachable back panel according to claim 2, characterized in that: A connecting rod (7) is rotatably connected to one side of the convex plate (8). A torsion spring is installed between one end of the outer wall of the connecting rod (7) and the inner wall of the convex plate (8). A spring pressure plate (9) is fixedly sleeved on the outer wall of the connecting rod (7) away from the convex plate (8) and the torsion spring. A spring pressure groove is opened on one side of the outer wall of the connecting column (5) and is slidably connected to the spring pressure plate (9).
4. The wall-mounted energy metering box with a detachable back panel according to claim 3, characterized in that: A rubber pad (10) is embedded in one side of the outer wall of the back plate body (3). A mating hole extending into the back plate body (3) is opened on one side of the rubber pad (10). A pressing groove is opened on one side of the mating hole inside the back plate body (3). Push plates (11) are installed at both ends of the outer wall of the connecting column (5).
5. The wall-mounted energy metering box with a detachable back panel according to claim 4, characterized in that: The operating component includes a reset groove located inside the connecting column (5) on one side of the operating groove. A reset plate (12) is slidably connected to the inside of the reset groove. A first spring (13) is installed between one side of the reset plate (12) and the inner wall of the reset groove. An abutment block (14) is installed at one end of the movable rod (6). An abutment groove is opened inside the connecting column (5) on the other side of the operating groove. The length of the abutment groove is greater than the length of the protruding end of the abutment block (14). The protruding end of the abutment block (14) is slidably connected to the abutment groove. A pull ring is rotatably connected to one end of the movable rod (6) extending to the outside of the connecting column (5).
6. The wall-mounted energy metering box with a detachable back panel according to claim 5, characterized in that: The movable adjustment assembly includes a linkage groove opened at one end inside the base frame (1), a rotating wheel (15) is rotatably connected to one end of the outer wall of the base frame (1), a first bevel gear (16) is installed at one end of the rotating wheel (15) extending to the inner side of the linkage groove, and a threaded rod (17) is rotatably connected to one end of the inner side of the linkage groove, and the threaded rod (17) is rotatably connected to the base frame (1).
7. The wall-mounted energy metering box with a detachable back panel according to claim 6, characterized in that: The outer wall of the threaded rod (17) is fixedly fitted with a second bevel gear at one end located inside the linkage groove. The second bevel gear is meshed with the first bevel gear (16). The other end of the top of the base frame (1) is equipped with a slide rod (18). The horizontal plate (2) is threadedly connected to the threaded rod (17), and the horizontal plate (2) is slidably connected to the slide rod (18).