Security-enhanced modular electric meter box

Abstract

The invention discloses an enhanced safety type modularized electric meter box which comprises an electric meter box body and a box door installed at the front end of the electric meter box body, a heat dissipation groove is formed in the side edge of the electric meter box body, a clamping frame is arranged at the front end of the electric meter box body, and an acrylic protection plate is arranged and is inserted into a groove supported at the front end of a clamping groove strip through two supporting rods; after the box door is closed, the pressing plate frame stably presses the acrylic protection plate, so that the acrylic protection plate stably isolates and blocks the electrified screws, and the situation that hands of non-professional personnel touch the electrified screws of the wiring terminals when the non-professional personnel operate the circuit breaker, and serious electric shock accidents are caused is avoided; according to the electric meter box, the conductive mechanism convenient to disassemble is arranged, so that the wiring board has a large wiring operation space, the situation that wiring between the circuit breaker, the zero line wiring terminal and the electricity inlet switch and the electric meter is inconvenient due to the narrow operation space is avoided, wiring operation is convenient, the wiring firmness can be improved, and the use safety of the electric meter box is improved.

Description

Technical Field

[0001] This invention relates to the field of electricity metering, specifically to an enhanced safety modular meter box. Background Technology

[0002] Electricity meter boxes are an important component in power systems, ensuring electrical safety and maintaining equipment performance at every stage of power generation, transmission, transformation, distribution, and consumption. Their applications cover various sectors including industry, agriculture, national defense, public facilities, and daily life. Especially in recent years, with economic development, accelerated urbanization, and industrial upgrading, particularly the widespread use of household appliances, the proportion of electricity consumption in the tertiary sector and by residents has continued to increase, leading to a surge in electricity demand. The government has also increased investment in power infrastructure, including rural power grid upgrades and urban redevelopment. Therefore, electricity meter boxes, as protective devices for electricity meters and terminal metering instruments, have significant development potential.

[0003] Existing meter boxes have the following shortcomings: The screws on the input and output terminals of the circuit breaker installed inside the meter box are directly connected to the internal conductive components. When the circuit is closed, the screws on the upper port, which is the power input terminal, are always energized. If a non-professional operates the circuit breaker, their hands can easily touch the energized screws on the terminals due to improper operation, leading to a serious electric shock accident. Furthermore, after the meter is installed in the meter mounting bracket inside the meter box, the operating space for wiring at the lower end of the meter is relatively small, making it difficult to wire the meter and reducing the security of the meter wiring. Summary of the Invention

[0004] Therefore, in order to address the above-mentioned shortcomings, the present invention provides an enhanced safety modular meter box.

[0005] The present invention is implemented as follows: an enhanced security modular meter box is constructed. The device includes a meter box body and a door installed at the front end of the meter box body. The side of the meter box body is provided with heat dissipation grooves, and the front end of the meter box body is provided with a locking frame. The lock cylinder provided on the door engages and locks with the inner edge of the locking frame after being rotated.

[0006] An installation mechanism is installed inside the meter box. The installation mechanism includes a back plate installed inside the meter box. A slot strip is provided at the front end of the back plate, and a circuit breaker is installed in the slot strip.

[0007] The rear end of the circuit breaker is engaged with the front end of the slot strip via a snap-fit ​​seat, and an acrylic protective plate is installed at the front end of the circuit breaker. The acrylic protective plate has a hollow slot embedded in the middle, and the acrylic protective plate is engaged with the front end of the circuit breaker via the hollow slot. The height of the acrylic protective plate is higher than that of the circuit breaker. The acrylic protective plate is located at the front end of the live screw of the circuit breaker's terminal block, thus isolating and blocking the live screw.

[0008] Preferably, the front end of the enclosure door is provided with a flip-up cover plate, and the cover plate is provided with a pressure plate frame corresponding to the rear end of the enclosure door. When the enclosure door is closed, the flip-up cover plate is located directly in front of the circuit breaker, and the pressure plate frame presses down on the front surface of the acrylic protective plate at the front end of the circuit breaker.

[0009] Preferably, a positioning tube is fixedly installed at the rear end of the acrylic protective plate, and a support rod is inserted into the rear end of the positioning tube. The rear end of the support rod is inserted into the groove provided at the front end of the slot strip.

[0010] Preferably, a meter mounting base is installed on the front surface of the back plate, and the mounting back plate on the meter mounting base is fixed to the front surface of the back plate by screws. An edge support plate is provided on the front surface of the mounting back plate. The meter is placed inside the mounting back plate and the edge support plate. A conductive mechanism is engaged and installed inside the edge support plate. An embedded plate on the conductive mechanism is installed inside the edge support plate, and the bottom edge of the embedded plate is supported by an extension support plate provided inside the edge support plate.

[0011] Preferably, the conductive mechanism further includes a terminal block, a locking bolt, a wire inlet, a contact plate, a spring, and a conductive rod. The terminal block is fixed to the bottom of the embedded plate. The locking bolt is threaded inside the terminal block and locks the wire that enters the terminal block through the wire inlet. The wire abuts against the bottom of the contact plate, and a spring is welded to the upper end of the contact plate. Both the contact plate and the spring are located inside the terminal block. The upper end of the spring is welded to the bottom of the conductive rod located at the top of the embedded plate. The conductive rod is inserted into the wiring terminal at the lower end of the meter.

[0012] Preferably, the card slot strip is also provided with a neutral wire terminal and a power switch. The circuit breaker, the neutral wire terminal and the power switch are all connected to the meter inside the terminal block by wires.

[0013] A grounding terminal is also provided on the left end of the front surface of the back plate. The grounding terminal is connected to the meter box, the back plate and the card slot strip through wires to realize the overall grounding of the meter box and the internal back plate and card slot strip.

[0014] Preferably, a positioning groove plate is provided on both sides of the front end of the edge support plate, and a connector is inserted between the inner sides of the two positioning groove plates, with the two positioning groove plates and the connector on the same plane.

[0015] Preferably, the connector consists of a connector plate, a locking plate, a threaded hole, and a locking rod. The connector plate is inserted into the inner sides of two positioning slot plates on both sides, and a locking plate is provided at the upper end of the connector plate. The locking plate has a threaded hole inside, and the locking rod is threadedly connected to the threaded hole. The rear end of the locking rod abuts against the lower end of the front surface of the meter installed on the inner side of the edge support plate.

[0016] Preferably, the mounting back plate has a locking groove at the top center and a pressing plate is mounted on the front surface of the upper end of the mounting back plate. The locking block at the rear end of the pressing plate is locked inside the locking groove, and the pressing plate abuts against the top of the meter mounted on the inner side of the edge support plate.

[0017] Preferably, a flap is also provided at the viewing window of the box door, and the flap can be flipped up and down. When the box door is closed, the flap is in front of the electricity meter, and the data of the electricity meter can be viewed through the viewing window.

[0018] The present invention has the following advantages: The present invention provides an enhanced safety modular meter box, which, compared with similar equipment, has the following improvements:

[0019] This invention provides an enhanced safety modular meter box. By incorporating an acrylic protective plate, supported by two rods inserted into a groove at the front end of a slotted strip, the stability of the acrylic protective plate fixed to the front of the circuit breaker is improved. Furthermore, after the box door is closed, a pressure plate frame stably presses down on the acrylic protective plate, ensuring its position at the front end of the live screws at the circuit breaker terminals. This provides stable isolation and prevents non-professionals from touching the live screws at the terminals, thus avoiding serious electric shock accidents and improving the safety performance of the meter box operation.

[0020] This invention, an enhanced safety modular meter box, features a detachable conductive mechanism. The extended support plate's engagement with the embedded card plate facilitates the upward movement of the conductive mechanism from within the edge support plate, providing ample wiring space. This allows for easy connection of wires from the circuit breaker, neutral terminal, and power switch to the wiring port, preventing inconvenience caused by limited space and ensuring secure wiring prevents short circuits within the meter box. Convenient wiring improves wiring stability, which in turn enhances the safety of the meter box during use. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of the enhanced safety modular meter box of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the meter box of the present invention;

[0023] Figure 3 This is a three-dimensional structural diagram of the installation mechanism of the present invention;

[0024] Figure 4 This is a three-dimensional structural diagram of the acrylic protective plate of the present invention installed at the front end of the circuit breaker;

[0025] Figure 5 This is a schematic diagram of the structure of the acrylic protective plate and the pressure plate frame of the present invention.

[0026] Figure 6 This is a three-dimensional structural schematic diagram of the meter mounting base of the present invention;

[0027] Figure 7 This is a three-dimensional structural schematic diagram of the connector of the present invention;

[0028] Figure 8 This is a schematic diagram showing the disassembled conductive mechanism and meter mounting base of the present invention;

[0029] Figure 9 This is a side view of the internal structure of the conductive mechanism of the present invention.

[0030] The components include: 1. Meter box; 11. Mounting mechanism; 111. Back plate; 112. Slot strip; 113. Circuit breaker; 1131. Buckle seat; 132. Acrylic protective plate; 1321. Positioning tube; 1322. Support rod; 114. Neutral wire terminal; 115. Power switch; 116. Meter mounting base; 1161. Mounting back plate; 1162. Edge support plate; 1621. Extension support plate; 1163. Positioning slot plate; 1164. Connector; 1641. Connector 1642. Plate; 1643. Locking plate; 1644. Threaded hole; 1645. Locking rod; 1165. Conductive mechanism; 1651. Embedded card plate; 1652. Terminal block; 1653. Locking bolt; 1654. Wire port; 1655. Contact plate; 1656. Spring; 1657. Conductive rod; 1166. Engaging groove; 1167. Pressing plate; 117. Grounding terminal; 12. Card frame; 2. Box door; 21. Lock cylinder; 22. Pressing plate frame; 23. Flip plate; 3. Heat dissipation groove. Detailed Implementation

[0031] The following will be combined with the appendix Figure 1-9 This invention will be described in detail, and the technical solutions in the embodiments of this invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0032] Please see Figure 1-5The enhanced security modular meter box of the present invention includes a meter box body 1 and a door 2 installed at the front end of the meter box body 1. A heat dissipation groove 3 is provided on the side of the meter box body 1, and a locking frame 12 is provided at the front end of the meter box body 1. A lock cylinder 21 on the door 2 engages and locks with the inner edge of the locking frame 12 after rotation. An installation mechanism 11 is installed inside the meter box body 1. The installation mechanism 11 includes a back plate 111 installed inside the meter box body 1. A slot strip 112 is provided at the front end of the back plate 111, and a locking strip 112 engages and installs a... Circuit breaker 113; The rear end of circuit breaker 113 is engaged with the front end of slot strip 112 via a snap-fit ​​seat 1131, and an acrylic protective plate 132 is installed at the front end of circuit breaker 113. The acrylic protective plate 132 has a hollow slot embedded in the middle, and the acrylic protective plate 132 is engaged with the front end of circuit breaker 113 via the hollow slot. The height of acrylic protective plate 132 is higher than that of circuit breaker 113. Acrylic protective plate 132 is located at the front end of the live screw of the terminal of circuit breaker 113, and isolates and blocks the live screw.

[0033] The front end of the box door 2 is provided with a flip-up cover plate, and the cover plate is provided with a pressure plate frame 22 at the rear end of the box door 2. When the box door 2 is closed, the flip-up cover plate is located in front of the circuit breaker 113, and the pressure plate frame 22 presses down on the front surface of the acrylic protective plate 132 at the front end of the circuit breaker 113.

[0034] It should be further explained that a silicone pad is also provided on the surface of the pressure plate frame 22. By adhering the silicone pad to the front surface of the acrylic protective plate 132, the anti-slip performance of the pressure plate frame 22 and the acrylic protective plate 132 is improved. This prevents the pressure plate frame 22 from being unable to stably press the acrylic protective plate 132 after the door 2 is closed. It also improves the position of the acrylic protective plate 132 at the front end of the live screw located at the terminal of the circuit breaker 113, and provides stable isolation and blocking for the live screw. This prevents non-professionals from touching the live screw of the terminal when operating the circuit breaker 113, which could lead to a serious electric shock accident.

[0035] The acrylic protective plate 132 has a positioning tube 1321 fixedly installed at the rear end, and a support rod 1322 is inserted into the rear end of the positioning tube 1321. The rear end of the support rod 1322 is inserted into the groove set at the front end of the slot strip 112.

[0036] It should be noted that there are two positioning tubes 1321 and two support rods 1322. The two support rods 1322 are inserted into the grooves supporting the front end of the slot strip 112 to improve the stability of the acrylic protective plate 132 fixed to the front end of the circuit breaker 113 and prevent the acrylic protective plate 132 from falling off the front end of the circuit breaker 113 due to vibration caused by contact between the box door 2 and the meter box 1 when the box door 2 is closed.

[0037] A flap 23 is also provided in the viewing window position of the door 2, and the flap 23 can be flipped up and down. When the door 2 is closed, the flap 23 is in front of the electricity meter, and the data of the electricity meter can be viewed through the viewing window.

[0038] Please see Figure 6-9 A meter mounting base 116 is installed on the front surface of the back plate 111. The mounting back plate 1161 on the meter mounting base 116 is fixed to the front surface of the back plate 111 by screws. An edge support plate 1162 is provided on the front surface of the mounting back plate 1161. The meter is placed inside the mounting back plate 1161 and the edge support plate 1162. A conductive mechanism 1165 is engaged and installed inside the edge support plate 1162. An embedded card plate 1651 on the conductive mechanism 1165 is installed inside the edge support plate 1162. The edge bottom of the embedded card plate 1651 is supported by an extension support plate 1621 provided inside the edge support plate 1162.

[0039] The conductive mechanism 1165 also includes a terminal block 1652, a locking bolt 1653, a wire inlet 1654, a contact plate 1655, a spring 1656, and a conductive rod 1657. The terminal block 1652 is fixed to the bottom of the embedded card plate 1651. The locking bolt 1653 is threaded inside the terminal block 1652. The locking bolt 1653 locks and fixes the wire that enters the wiring cavity of the terminal block 1652 through the wire inlet 1654. The wire abuts against the bottom of the contact plate 1655, and the spring 1656 is welded to the upper end of the contact plate 1655. Both the contact plate 1655 and the spring 1656 are located inside the terminal block 1652. The upper end of the spring 1656 is welded to the bottom of the conductive rod 1657 located at the top of the embedded card plate 1651. The conductive rod 1657 is inserted and installed at the lower end of the meter's internal wiring terminal.

[0040] It should be further explained that there are two extension support plates 1621. The extension support plates 1621 on both sides can stably support the embedded card plate 1651 inside the edge support plate 1162. The bottom of the edge support plate 1162 is hollow. With the support of the embedded card plate 1651, the terminal block 1652 passes through the hollow at the bottom of the edge support plate 1162. The locking support of the extension support plate 1621 on the embedded card plate 1651 facilitates the entire conductive mechanism 1165 to move upward from inside the edge support plate 1162. This gives the terminal block 1652 a larger wiring operation space, which makes it easier for the wires on the circuit breaker 113, neutral terminal 114 and power switch 115 to be connected to the wire inlet 1654. This avoids the inconvenience of wiring the circuit breaker 113, neutral terminal 114 and power switch 115 to the meter due to the narrow operating space. Convenient wiring operation can improve the firmness of the wiring.

[0041] The two sides of the contact plate 1655 are slidably connected to the inner wall of the wiring cavity of the terminal block 1652 to ensure that the contact plate 1655 moves only in the vertical direction after the wire is pressed, and maintains stable contact with the wire.

[0042] The card slot strip 112 is also provided with a neutral wire terminal 114 and a power switch 115. The circuit breaker 113, the neutral wire terminal 114 and the power switch 115 are all connected to the meter inside the terminal block 1652 through wires.

[0043] A grounding terminal 117 is also provided on the left end of the front surface of the back plate 111. The grounding terminal 117 is connected to the meter box 1, the back plate 111 and the card slot strip 112 respectively through wires to realize the overall grounding of the meter box 1 and the internal back plate 111 and card slot strip 112.

[0044] A positioning groove plate 1163 is provided on both sides of the front end of the edge support plate 1162, and a connector 1164 is inserted between the inner sides of the two positioning groove plates 1163. The two positioning groove plates 1163 and the connector 1164 are on the same plane.

[0045] The connector 1164 consists of a connector plate 1641, a locking plate 1642, a threaded hole 1643, and a locking rod 1644. The connector plate 1641 is inserted into the inner side of two positioning slot plates 1163 on both sides, and a locking plate 1642 is provided at the upper end of the connector plate 1641. The locking plate 1642 has a threaded hole 1643 through it. The locking rod 1644 is threadedly connected to the threaded hole 1643, and the rear end of the locking rod 1644 abuts against the lower end of the front surface of the meter installed inside the edge support plate 1162.

[0046] It should be further explained that there are two locking plates 1642, and the two locking plates 1642 are an integrated structure that is adjacent to each other on the left and right. An even number of threaded holes 1643 are provided on the locking plates 1642. The locking rod 1644 is screwed inside the threaded holes 1643, so that the locking rod 1644 can pass through the inside of the locking plate 1642 and move backward, thereby adjusting the lower end of the front surface of the meter to improve the firmness of the meter installed on the inner side of the edge support plate 1162.

[0047] The mounting backplate 1161 has a locking groove 1166 at the top center, and a pressing plate 1167 is mounted on the upper front surface of the mounting backplate 1161. The locking block at the rear end of the pressing plate 1167 is engaged and installed inside the locking groove 1166. The pressing plate 1167 abuts against the top of the meter mounted inside the edge support plate 1162.

[0048] This invention provides an enhanced safety modular meter box through improvements, the working principle of which is as follows;

[0049] First, open the door 2 of the meter box 1. Then, snap the circuit breaker 113, neutral wire terminal 114 and power switch 115 onto the slot strip 112. Adjust the installation position of the neutral wire terminal 114 and power switch 115 according to the wiring orientation. The position of the circuit breaker 113 needs to be fixed to ensure that the rear end of the support rod 1322 can be inserted into the groove reserved in the slot strip 112. After the circuit breaker 113 is installed, install the acrylic protective plate 132 on the front end of the circuit breaker 113.

[0050] Second, the upper end of the wire is inserted into the terminal block 1652 through the wire port 1654, and the upper end of the wire is locked and fixed inside the terminal block 1652 by tightening the locking bolt 1653. At the same time, the upper end of the wire contacts the contact plate 1655, and the spring 1656 applies a downward elastic force to the contact plate 1655 to improve the firmness of the contact between the upper end of the wire and the contact plate 1655. After all the wires are connected, the conductive mechanism 1165 is placed into the edge support plate 1162. The embedded card plate 1651 is supported by the extension support plate 1621. Then, the lower end of the wire is connected to the corresponding circuit breaker 113, neutral terminal 114 and power switch 115.

[0051] Third, the meter is installed inside the edge support plate 1162. At this time, the conductive rod 1657 is inserted into the lower end of the meter, thereby realizing the electrical connection between the meter and the circuit breaker 113, the neutral wire terminal 114 and the power switch 115. The locking rod 1644 passes through the locking plate 1642 and moves backward to adjust and fix the lower end of the front surface of the meter. Then, the rear end of the pressing plate 1167 is inserted into the locking groove 1166, so that the pressing plate 1167 abuts and fixes the top of the meter.

[0052] Fourth, after all installation is completed, close the box door 2. At this time, the pressure plate frame 22 on the inside of the box door 2 will be in contact with the front end of the acrylic protective plate 132. When the user of the meter in the meter box 1 needs to leave for a long time, the circuit breaker 113 should be turned off to prevent fire caused by electrical faults when no one is around. At the same time, it can also save standby power consumption. When turning off the circuit breaker 113, there is no need to open the box door 2. Just flip up the cover plate at the front of the box door 2. At this time, the circuit breaker 113 is exposed, and the acrylic protective plate 132 is at the front end of the circuit breaker 113. When the user lacks professional knowledge, when manually operating to turn off the circuit breaker 113, there will be no contact with the live screws of the circuit breaker 113 terminal, which greatly protects the safety of non-professionals.

[0053] The above description shows and illustrates the basic principles, main features, and advantages of the present invention. Standard parts used in the present invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0054] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An enhanced security modular meter box, including a meter box body (1) and a door (2) installed at the front end of the meter box body (1), wherein the meter box body (1) is provided with a heat dissipation groove (3) on the side and a card frame (12) is provided at the front end of the meter box body (1), and the lock cylinder (21) provided on the door (2) engages and locks with the inner edge of the card frame (12) after being rotated; Its features are: The meter box (1) is equipped with an installation mechanism (11). The installation mechanism (11) includes a back plate (111) installed inside the meter box (1). The front end of the back plate (111) is provided with a slot strip (112), and a circuit breaker (113) is installed in the slot strip (112). The rear end of the circuit breaker (113) is engaged with the front end of the slot strip (112) via a snap-fit ​​seat (1131), and an acrylic protective plate (132) is installed at the front end of the circuit breaker (113). The acrylic protective plate (132) has a hollow slot embedded in the middle, and the acrylic protective plate (132) is engaged with the front end of the circuit breaker (113) via the hollow slot. The height of the acrylic protective plate (132) is higher than that of the circuit breaker (113). The acrylic protective plate (132) is located at the front end of the live screw of the terminal of the circuit breaker (113) to isolate and block the live screw.

2. The enhanced safety modular meter box according to claim 1, characterized in that: The front end of the box door (2) is provided with a flip-up cover plate, and the cover plate is provided with a pressure plate frame (22) at the rear end of the box door (2). When the box door (2) is closed, the flip-up cover plate is located in front of the circuit breaker (113), and the pressure plate frame (22) presses the front surface of the acrylic protective plate (132) at the front end of the circuit breaker (113).

3. The enhanced safety modular meter box according to claim 2, characterized in that: The acrylic protective plate (132) is fixedly installed with a positioning tube (1321) at its rear end, and a support rod (1322) is inserted into the rear end of the positioning tube (1321). The rear end of the support rod (1322) is inserted into the groove provided at the front end of the slot strip (112).

4. The enhanced safety modular meter box according to claim 1, characterized in that: A meter mounting base (116) is installed on the front surface of the back plate (111). The mounting back plate (1161) provided on the meter mounting base (116) is fixed to the front surface of the back plate (111) by screws. An edge support plate (1162) is provided on the front surface of the mounting back plate (1161). The meter is placed inside the mounting back plate (1161) and the edge support plate (1162). A conductive mechanism (1165) is engaged and installed inside the edge support plate (1162). An embedded card plate (1651) provided on the conductive mechanism (1165) is installed inside the edge support plate (1162). The edge bottom of the embedded card plate (1651) is supported by an extension support plate (1621) provided inside the edge support plate (1162).

5. The enhanced safety modular meter box according to claim 4, characterized in that: The conductive mechanism (1165) further includes a terminal block (1652), a locking bolt (1653), a wire inlet (1654), a contact plate (1655), a spring (1656), and a conductive rod (1657). The terminal block (1652) is fixed to the bottom of the embedded card plate (1651). The locking bolt (1653) is threaded inside the terminal block (1652) and will enter the terminal block through the wire inlet (1654). (1652) The internal wires are locked and fixed, and the wires abut against the bottom of the contact plate (1655). A spring (1656) is welded to the upper end of the contact plate (1655). The contact plate (1655) and the spring (1656) are both set inside the terminal block (1652). The upper end of the spring (1656) is welded to the bottom of the conductive rod (1657) set at the top of the embedded card plate (1651). The conductive rod (1657) is inserted and installed at the internal wiring terminal at the lower end of the meter.

6. The enhanced safety modular meter box according to claim 1, characterized in that: The slot strip (112) is also provided with a neutral wire terminal (114) and a power switch (115). The circuit breaker (113), the neutral wire terminal (114) and the power switch (115) are all connected to the meter inside the terminal block (1652) by wires. The back plate (111) is also provided with a grounding terminal (117) on the left end of the front surface. The grounding terminal (117) is connected to the meter box (1), the back plate (111) and the card slot (112) respectively through wires to realize the overall grounding of the meter box (1) and the internal back plate (111) and card slot (112).

7. The enhanced safety modular meter box according to claim 4, characterized in that: The edge support plate (1162) has a positioning groove plate (1163) on both sides of its front end, and a connector (1164) is inserted between the inner sides of the two positioning groove plates (1163). The two positioning groove plates (1163) and the connector (1164) are on the same plane.

8. The enhanced safety modular meter box according to claim 7, characterized in that: The connector (1164) consists of a connector plate (1641), a locking plate (1642), a threaded hole (1643), and a locking rod (1644). The connector plate (1641) is inserted into the inner side of two positioning slot plates (1163) on both sides, and a locking plate (1642) is provided at the upper end of the connector plate (1641). The locking plate (1642) has a threaded hole (1643) through it. The locking rod (1644) is threadedly connected to the threaded hole (1643), and the rear end of the locking rod (1644) abuts against the lower end of the front surface of the meter installed inside the edge support plate (1162).

9. The enhanced safety modular meter box according to claim 4, characterized in that: The mounting backplate (1161) has a locking groove (1166) at the top center, and a pressing plate (1167) is installed on the upper front surface of the mounting backplate (1161). The locking block at the rear end of the pressing plate (1167) is locked inside the locking groove (1166), and the pressing plate (1167) abuts against the top of the meter installed inside the edge support plate (1162).

10. The enhanced safety modular meter box according to claim 2, characterized in that: A flap (23) is also provided in the viewing window position of the box door (2), and the flap (23) can be flipped up and down. When the box door (2) is closed, the flap (23) is in front of the electricity meter, and the data of the electricity meter can be viewed through the viewing window.

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