Electric energy metering box

Abstract

The invention relates to an electric energy metering box, and relates to the technical field of metering boxes, and the electric energy metering box comprises a box body, an electrical assembly located in the box body, and a box cover covering the box body. A cleaning rod is arranged outside the box body, cleaning cotton is fixedly arranged on the side face, away from the box body, of the cleaning rod, and positioning rods bent in the same direction are fixedly arranged at the two ends of the cleaning rod side by side. Elastic clamping pieces are arranged on the side faces, close to each other, of the two positioning rods, positioning notches allowing the positioning rods to be inserted therein are formed in the upper portions of the two opposite vertical side faces of the box body, and positioning grooves allowing the elastic clamping pieces to be clamped therein are formed in the inner walls of the positioning notches; the cleaning cotton can be taken out from the positioning notch along with the cleaning rod to clean the outer side face of the box cover. When cleaning is needed, the positioning rod is taken out of the positioning notch by applying force upwards, and then the outer side face of the box cover can be wiped and cleaned by holding the positioning rod and using the cleaning cotton.

Description

Technical Field

[0001] The present application relates to the technical field of meter boxes, and in particular to an electric energy meter box. Background Art

[0002] As an indispensable part of the modern power system, the electric energy meter box plays a vital role in both industrial production and household electricity management. Its core function is to accurately measure the electric energy consumption and monitor the electric parameters such as power, current and voltage in real time. These data have a far-reaching impact on the effective management of energy, environmental protection, electricity bill settlement and cost control.

[0003] From the perspective of technical composition, the electric energy meter box is a highly integrated system. Its sturdy box body and transparent box cover form the first protective barrier, effectively isolating the interference of the external environment on the internal precision components. Inside the box, core components such as the power module, current transformer, voltage transformer, metering module and communication module work together to be responsible for the stable supply of electric energy, the precise conversion of current and voltage signals, the intelligent calculation of electric energy parameters and the remote transmission of data. In addition, according to the actual application scenario, the electric energy meter box may also integrate advanced functions such as incoming power distribution unit, electrical protection and control unit and anti-theft to meet the diverse needs of power management.

[0004] However, when the energy meter box is deployed outdoors, especially in areas with frequent sandstorms, the outer surface of its transparent box cover is prone to accumulate a mixture of sand and water vapor, which not only affects the appearance, but more importantly, interferes with the reading efficiency of the staff. Due to the adhesion of sand and dust, the staff often need to spend extra time and energy to find suitable cleaning tools, which not only reduces work efficiency, but may also cause data reading errors due to untimely cleaning, affecting the accuracy and timeliness of electricity management, and there is room for improvement. Summary of the invention

[0005] The purpose of the present application is to provide an electric energy metering box to solve the problem of low cleaning efficiency of impurities adhering to the outer side of the transparent box cover in the above-mentioned related art.

[0006] The electric energy meter box provided in this application adopts the following technical solution: An electric energy meter box comprises a box body, electrical components located in the box body and a box cover arranged on the box body; a cleaning rod is arranged outside the box body, a cleaning cotton is fixedly arranged on the side of the cleaning rod away from the box body, and positioning rods bent in the same direction are fixedly arranged side by side at both ends of the cleaning rod; elastic clips are arranged on the sides of the two positioning rods close to each other, positioning notches for the positioning rods to be inserted are provided on the upper part of the two vertical sides of the box body, and positioning grooves for the elastic clips to be inserted are provided on the inner wall of the positioning notch; the cleaning cotton can be taken out of the positioning notch along with the cleaning rod to clean the outer side of the box cover.

[0007] By adopting the above technical solution, due to the combined arrangement of the cleaning rod, cleaning cotton and positioning rod, when cleaning is required, force is applied upwards, and in the process, the elastic force of the elastic clip is overcome, so that the elastic clip is disengaged from the positioning groove until the positioning rod is taken out of the positioning notch, and then the positioning rod can be held and the cleaning cotton can be used to wipe the outer side of the box cover; when the box cover does not need to be cleaned, the cleaning rod can be inserted into the positioning notch, and the elastic clip is inserted into the corresponding positioning groove to store it.

[0008] Optionally, the sides of the positioning rods that are away from each other are flush with the outer side of the box body, and the outer side surfaces of the positioning rods are provided with anti-slip grooves.

[0009] By adopting the above technical solution, due to the anti-slip pattern on the outer side of the positioning rod, when the user applies force to remove the positioning rod from the positioning notch, the friction between the finger and the outer side of the positioning rod is increased, which facilitates the removal and placement of the positioning rod.

[0010] Optionally, the box body is provided with a receiving notch for inserting the cleaning rod and the cleaning cotton, and both sides of the receiving notch are connected to the positioning notch, and the side of the cleaning cotton away from the cleaning rod is flush with the outer side of the box body.

[0011] By adopting the above technical solution, due to the opening of the accommodating gap, the cleaning rod and the cleaning cotton can be better stored, the overall size of the metering box can be reduced, and the packaging of the metering box before transportation is convenient.

[0012] Optionally, extension plates are fixedly provided on two vertical edges of the side of the box body away from the box cover, and protective covers are hinged on the extension plates; the two protective covers can rotate towards each other and are detachably connected, and the protective covers are used to protect the outer side of the box cover when locked with each other.

[0013] By adopting the above technical solution, due to the symmetrical arrangement of the protective covers, the two protective covers can be rotated towards each other and fixed, so as to protect the box cover, reduce the possibility of external dust or other impurities adhering to the outer surface of the box cover, and improve the corresponding protective performance.

[0014] Optionally, the side edges of the two protective covers that are close to each other are both fixed with flanges bent away from the box cover, and the flanges are provided with fixing holes. The outer side of the box body is provided with locking bolts that pass through the fixing holes on the two flanges.

[0015] By adopting the above technical solution, due to the coordinated setting of the flange and the locking bolt, when the two protective covers need to be locked, the user rotates the two protective covers towards each other and rotates the two flanges to a state of mutual fit. At this time, the two flanges can be fixed with the locking bolt, so that the two protective covers can be detachably fixed in this state, which is also convenient for later disassembly.

[0016] Optionally, an elastic sealing strip is fixedly provided on the opening edge of the protective cover and can be pressed against the outer side surface of the box cover when the two protective covers are locked to each other.

[0017] By adopting the above technical solution, when the two protective covers are locked with each other, due to the installation of the elastic sealing strip on the protective cover, the inner side of the elastic sealing strip can be pressed against the outer side of the box cover, thereby enhancing the protective performance of the protective cover on the box cover.

[0018] Optionally, an abutment plate is fixedly provided on the side edge of the protective cover close to the box body, and one side of the abutment plate can abut against the outer side surface of the positioning rod when the two protective covers are locked to each other.

[0019] By adopting the above technical solution, due to the installation setting of the abutment plate on the protective cover, when the two protective covers are in a mutually locked state, one side of the abutment plate can abut against the outer side surface of the positioning rod, further abutting and locking the positioning rod in the positioning notch, thereby enhancing the installation stability of the positioning rod in the positioning notch.

[0020] Optionally, a base plate is fixedly provided on the side of the box body, and a plurality of waist-shaped mounting holes are provided on the base plate; a plurality of locking plates are fixedly provided on the side edge of the extension plate away from the box cover, and a locking groove for inserting the locking plates is provided on the base plate; a locking protrusion is fixedly provided on one side of the locking plate, and a locking groove for the locking protrusion to be inserted is provided on the inner wall of the locking groove.

[0021] By adopting the above technical solution, when the electric energy meter box is installed on a vertical plane, due to the combined arrangement of the base plate and the locking plate, the user pre-inserts the locking plate on the extension plate into the locking groove, inserts the locking protrusion into the locking groove, and realizes the assembly of the box body and the base plate, and then fixes the base plate on the designated vertical plane through the waist-shaped mounting hole, thereby realizing the rapid installation of the electric energy meter box and facilitating the subsequent rapid disassembly.

[0022] Optionally, locking rods are slidably provided on the upper and lower side surfaces of the extension plate, and a locking gap for inserting the locking rod is preset between the side surface of the locking plate away from the locking protrusion and the inner wall of the locking groove, and a guiding slope is provided on the side edge of the locking rod away from the base plate; one side of the abutment plate can squeeze the locking rod along the guiding slope when the two protective covers are locked to each other, so that the end of the locking rod is inserted into the locking gap; the extension plate is provided with an elastic reset part which drives the locking rod to come out.

[0023] By adopting the above technical solution, due to the combined arrangement of the locking rod and the elastic reset member, when the two protective covers are locked with each other, the abutment plate rotates with the protective cover to a state of squeezing the locking rod. At this time, the end of the locking rod away from the abutment plate is inserted into the corresponding locking gap under the squeezing of the abutment plate, thereby further locking the locking plate inserted into the locking groove and enhancing the assembly stability of the box body and the base plate; when the electric energy meter box needs to be disassembled, the protective cover is opened, and then the end of the locking rod is pulled out of the locking gap under the action of the elastic reset member to release the lock on the locking plate, and the locking plate can be pulled out of the locking groove.

[0024] Optionally, the elastic return member includes a spring in a compressed state, a guide block fixed on the extension plate, and a baffle fixed on the outer periphery of the locking rod, the guide block is provided with a guide through hole for the locking rod to pass through, the baffle is located on the side of the guide block away from the substrate, and the two ends of the spring are respectively fixed to the sides of the guide block and the baffle that are close to each other.

[0025] By adopting the above technical solution, when the abutment plate and the locking rod are misaligned, under the action of the spring, the locking rod disengages from the locking gap, which facilitates the disassembly of the box body; when the abutment plate presses the locking rod along the guiding inclined surface, the spring is pressed at this time, so that the end of the locking rod is inserted into the locking gap, further locking the locking plate in the locking groove.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. When cleaning is required, apply force upwards to overcome the elastic force of the elastic clip, so that the elastic clip is disengaged from the positioning groove until the positioning rod is taken out of the positioning notch. Then, the positioning rod can be held and the cleaning cotton can be used to wipe the outer side of the box cover; when the box cover does not need to be cleaned, the cleaning rod can be inserted into the positioning notch, and the elastic clip is inserted into the corresponding positioning groove to store it. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application; Figure 2 It is a schematic diagram of the explosion structure of Example 1 of the present application; Figure 3 It is a partial cross-sectional structural schematic diagram of the installation and matching of the cleaning member in Example 1 of the present application; Figure 4 yes Figure 3 A magnified schematic diagram of part A; Figure 5 It is a schematic diagram of the overall structure of Example 2 of the present application; Figure 6 It is a cross-sectional structural schematic diagram of the installation and matching of the protective cover in Example 2 of the present application; Figure 7 This is a schematic diagram of the exploded structure of the embodiment 2 of the present application showing the installation distribution of the protection components and the substrate; Figure 8 It is a partial cross-sectional structural schematic diagram of the locking plate installation cooperation embodied in the second embodiment of the present application; Fig. 9 It is a schematic diagram of the local structure of the installation and cooperation of the elastic reset member according to Example 2 of the present application.

[0029] In the figure, 1, box body; 11, positioning notch; 111, positioning groove; 12, accommodating notch; 13, extension plate; 14, locking plate; 141, locking protrusion; 2, box cover; 3, cleaning member; 31, cleaning rod; 32, cleaning cotton; 33, positioning rod; 331, placement groove; 332, anti-slip pattern; 34, elastic clamping member; 341, compression spring; 342, arc-shaped protrusion; 4, protection component; 41, protection cover; 411, elastic sealing strip; 412, abutment plate; 42, flange; 43, fixing bolt; 5, base plate; 51, waist-shaped mounting hole; 52, locking groove; 521, locking groove; 522, locking gap; 6, locking rod; 61, guide slope; 7, elastic reset member; 71, spring; 72, guide block; 721, guide through hole; 73, baffle. DETAILED DESCRIPTION

[0030] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0031] Embodiment 1: Reference Figure 1 and Figure 2 , an electric energy meter box, comprising a box body 1 fixed in a vertical direction, an electrical component (not shown) located in the box body 1, and a box cover 2 with a mounting cover arranged on a vertical side opening of the box body 1; a cleaning piece 3 is detachably mounted on the upper side of the box body 1; when it is necessary to clean the outer side of the box cover 2, a staff member can remove the cleaning piece 3 and clean the outer side of the box cover 2.

[0032] Reference Figure 2 , Figure 3 and Figure 4 The cleaning assembly includes a cleaning rod 31 and a cleaning cotton 32 fixed to one side of the cleaning rod 31. The cleaning cotton 32 is located on the side of the cleaning rod 31 away from the box body 1, and the cleaning cotton 32 is a sponge block; the two ends of the cleaning rod 31 are fixed side by side with positioning rods 33 bent in the same direction, and the positioning rods 33 and the cleaning rod 31 are bent and formed integrally; Elastic clips 34 are provided on the sides where the two positioning rods 33 are close to each other, and a positioning notch 11 for the positioning rod 33 to be inserted is provided on the upper part of the two vertical sides of the box body 1, and a positioning groove 111 for the elastic clip 34 to be inserted is provided on the inner wall of the positioning notch 11; when cleaning is required, upward force is applied to remove the positioning rod 33 from the positioning notch 11, and in this process, the elastic force of the elastic clip 34 is overcome, so that the elastic clip 34 is disengaged from the positioning groove 111.

[0033] Reference Figure 3 and Figure 4 The elastic clip 34 includes a compression spring 341 and an arc-shaped protrusion 342, wherein the positioning rod 33 is provided with a placement groove 331 for the compression spring 341 and the arc-shaped protrusion 342 to be placed therein, and the compression spring 341 presses one side of the arc-shaped protrusion 342 so that one side of the arc-shaped protrusion 342 protrudes from the opening of the placement groove 331, and the protruding part of the arc-shaped protrusion 342 is an arc surface, and the arc length corresponding to the arc surface is a minor arc; with this arrangement, it is convenient for the elastic clip 34 to be inserted into the positioning groove 111, and it is also convenient for the subsequent force to be applied to remove the elastic clip 34 from the positioning groove 111.

[0034] Reference Figure 2 and Figure 3 The box body 1 is provided with an accommodating notch 12 for the cleaning rod 31 and the cleaning cotton 32 to be placed therein, and the two sides of the accommodating notch 12 are connected to the positioning notch 11, and the side of the cleaning cotton 32 away from the cleaning rod 31 is flush with the outer side of the box body 1, and the sides of the positioning rods 33 away from each other are flush with the outer side of the box body 1, and the outer side of the positioning rods 33 is provided with anti-slip grooves 332; this arrangement facilitates the storage and fixation of the cleaning member 3 in normal conditions, and also facilitates the removal of the cleaning member 3 through the anti-slip grooves 332.

[0035] The implementation principle of the embodiment of the present application is: When cleaning is required, the user presses the anti-slip groove 332 on the outer side of the positioning rod 33 with his finger, and then applies upward force to remove the positioning rod 33 from the positioning notch 11. In this process, the elastic force of the elastic clip 34 is overcome, so that the elastic clip 34 is disengaged from the positioning groove 111; then the cleaning cotton 32 on the cleaning rod 31 can be used to clean the outer side of the box cover 2; when cleaning is not required under normal circumstances, the cleaning rod 31 is inserted into the accommodating notch 12, and the positioning rod 33 is inserted into the positioning notch 11, at which time the elastic clip 34 is inserted into the corresponding positioning groove 111.

[0036] Embodiment 2: Reference Figure 5 and Figure 6 , the difference between the embodiment of the present application and the embodiment 1 is that an extension plate 13 is integrally formed on two opposite vertical edges of the box body 1, one side of the extension plate 13 is flush with the side of the box body 1 away from the box cover 2, and a protection component 4 is provided on the outside of the box body 1, wherein the protection component 4 includes a protection cover 41 hinged to the edges of the two extension plates 13, and the two protection covers 41 are integrally formed on the side edges close to each other with flanges 42 bent in a direction away from the box cover 2, and a fixing through hole is opened on the flange 42, and a locking bolt penetrating through the fixing through holes on the two flanges 42 is provided on the outer side of the box body 1; When it is necessary to lock the two protective covers 41, the user rotates the two protective covers 41 towards each other and rotates the two flanges 42 to a state of mutual fit. At this time, the two flanges 42 can be fixed using locking bolts, thereby achieving detachable fixation of the two protective covers 41 in this state; when the two flanges 42 are in a mutually locked state, the protective covers 41 are used to protect the outer side of the box cover 2.

[0037] Reference Figure 6 An elastic sealing strip 411 made of rubber is fixed to the opening edge of the protective cover 41 by glue. When the two protective covers 41 are locked with each other, the inner side of the elastic sealing strip 411 can be pressed against the outer side of the box cover 2, thereby enhancing the protective performance of the protective cover 41 on the box cover 2; An abutment plate 412 is fixedly provided on the side edge of the protective cover 41 close to the box body 1, wherein the abutment plate 412 can rotate synchronously with the protective cover 41. When the two protective covers 41 are in a mutually locked state, one side of the abutment plate 412 can abut against the outer side surface of the positioning rod 33, further abutting and locking the positioning rod 33 in the positioning notch 11.

[0038] Reference Figure 7 and Figure 8A base plate 5 is provided on the side of the box body 1 away from the box cover 2, and four waist-shaped mounting holes 51 are provided on the base plate 5; four locking plates 14 are fixedly provided on the side edge of the extension plate 13 facing the base plate 5, and a locking groove 52 for inserting the locking plate 14 is provided on the base plate 5; a locking protrusion 141 is fixedly provided on one side of the locking plate 14, and the outer side surface of the locking protrusion 141 is an arc surface, and the arc length corresponding to the arc surface is a minor arc, and a locking groove 521 for the locking protrusion 141 to be inserted is provided on the inner wall of the locking groove 52; When the electric energy meter box is installed on a vertical surface, the user inserts the locking plate 14 on the extension plate 13 into the locking groove 52 in advance, inserts the locking protrusion 141 into the locking groove 521, realizes the assembly of the box body 1 and the substrate 5, and then fixes the substrate 5 on the specified vertical surface.

[0039] Reference Figure 8 and Fig. 9 , locking rods 6 are slidably provided on the upper and lower side surfaces of the two extension plates 13 in the horizontal direction, a locking gap 522 for inserting the locking rod 6 is preset between the side surface of the locking plate 14 away from the locking protrusion 141 and the inner wall of the locking groove 52, and an elastic reset member 7 for driving the locking rod 6 to escape is provided on the extension plate 13; a guiding inclined surface 61 is provided on the side edge of the locking rod 6 away from the base plate 5, wherein the abutting plate 412 can insert the end of the locking rod 6 into the locking gap 522 along the guiding inclined surface 61, thereby providing assembly stability of the box body 1 and the base plate 5; When the two protective covers 41 are locked to each other, the abutment plate 412 rotates with the protective covers 41 to squeeze the locking rod 6. At this time, the end of the locking rod 6 away from the abutment plate 412 is inserted into the corresponding locking gap 522 under the squeezing of the abutment plate 412; when the two protective covers 41 are unlocked, the elastic reset member 7 drives the end of the locking rod 6 to escape from the locking gap 522. This state facilitates the disassembly of the box body 1.

[0040] Reference Figure 8 and Fig. 9 The elastic reset member 7 includes a spring 71 in a compressed state, a guide block 72 fixed on the extension plate 13, and a baffle 73 fixed on the outer periphery of the locking rod 6, wherein the guide block 72 is provided with a guide through hole 721 for the locking rod 6 to pass through, the baffle 73 is located on the side of the guide block 72 away from the substrate 5, and the two ends of the spring 71 are respectively fixed to the sides of the guide block 72 and the baffle 73 that are close to each other.

[0041] The implementation principle of the embodiment of the present application is: When the two protective covers 41 need to be locked, the user rotates the two protective covers 41 toward each other and rotates the two flanges 42 to a state of being fitted together. At this time, the two flanges 42 can be fixed with locking bolts; in this state, one side of the abutment plate 412 can abut against the outer side of the positioning rod 33, and the abutment plate 412 simultaneously inserts the end of the locking rod 6 into the locking gap 522 along the guiding inclined surface 61; When the two protective covers 41 are unlocked and unfolded, the abutment plate 412 stops pressing the outer side surface of the positioning rod 33 and the locking rod 6, which makes it easy to take out the cleaning member 3 and unlock the box body 1 and the base plate 5.

[0042] Unless otherwise defined, the terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The "first", "second", "third" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and other similar words do not indicate a quantitative limit, but indicate that there is at least one. "Including" or "comprising" and other similar words mean that the elements or objects appearing in front of "including" or "comprising" cover the elements or objects listed after "including" or "comprising" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0043] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An electric energy meter box, comprising a box body (1), an electrical component located in the box body (1), and a box cover (2) arranged on the box body (1); characterized in that: A cleaning rod (31) is provided outside the box body (1), a cleaning cotton (32) is fixedly provided on the side of the cleaning rod (31) away from the box body (1), and positioning rods (33) bent in the same direction are fixedly provided side by side at both ends of the cleaning rod (31); The sides of the two positioning rods (33) close to each other are both provided with elastic clamping parts (34); the upper part of the box body (1) opposite to the two vertical sides is provided with a positioning notch (11) for the positioning rod (33) to be inserted into; the inner wall of the positioning notch (11) is provided with a positioning groove (111) for the elastic clamping part (34) to be inserted into; the cleaning cotton (32) can be taken out of the positioning notch (11) along with the cleaning rod (31) to clean the outer side of the box cover (2).

2. An electric energy meter box according to claim 1, characterized in that: The sides of the positioning rods (33) that are away from each other are flush with the outer side of the box body (1), and the outer side of the positioning rods (33) is provided with anti-slip grooves (332).

3. The electric energy meter box according to claim 1, characterized in that: The box body (1) is provided with a receiving notch (12) for the cleaning rod (31) and the cleaning cotton (32) to be placed therein, the two sides of the receiving notch (12) are connected to the positioning notch (11), and the side of the cleaning cotton (32) away from the cleaning rod (31) is flush with the outer side of the box body (1).

4. The electric energy meter box according to claim 1, characterized in that: The box body (1) is provided with extension plates (13) on two opposite vertical edges, and a protective cover (41) is hinged on the extension plate (13); the two protective covers (41) can rotate towards each other and are detachably connected, and the protective covers (41) are used to protect the outer side of the box cover (2) in a mutually locked state.

5. The electric energy meter box according to claim 4, characterized in that: The side edges of the two protective covers (41) that are close to each other are both fixed with flanges (42) that are bent away from the box cover (2), and the flanges (42) are provided with fixing through holes. The outer side surface of the box body (1) is provided with locking bolts that penetrate the fixing through holes on the two flanges (42).

6. The electric energy meter box according to claim 4, characterized in that: An elastic sealing strip (411) is fixedly provided on the opening edge of the protective cover (41) and is capable of pressing against the outer side surface of the box cover (2) when the two protective covers (41) are locked with each other.

7. The electric energy meter box according to claim 4, characterized in that: A contact plate (412) is fixedly provided on the side edge of the protective cover (41) close to the box body (1), and one side of the contact plate (412) can contact the outer side surface of the positioning rod (33) when the two protective covers (41) are locked with each other.

8. The electric energy meter box according to claim 7, characterized in that: A base plate (5) is fixedly provided on the side of the box body (1), and a plurality of waist-shaped mounting holes (51) are provided on the base plate (5); a plurality of locking plates (14) are fixedly provided on the side edge of the extension plate (13) away from the box cover (2), and a locking groove (52) is provided on the base plate (5) for the locking plates (14) to be inserted; a locking protrusion (141) is fixedly provided on one side of the locking plate (14), and a locking groove (521) is provided on the inner wall of the locking groove (52) for the locking protrusion (141) to be inserted.

9. The electric energy meter box according to claim 8, characterized in that: A locking rod (6) is slidably provided on the upper and lower sides of the extension plate (13); a locking gap (522) is preset between the side of the locking plate (14) away from the locking protrusion (141) and the inner wall of the locking groove (52) for the locking rod (6) to be inserted; and a guiding inclined surface (61) is provided on the side edge of the locking rod (6) away from the base plate (5); One side of the abutment plate (412) can press the locking rod (6) along the guide slope (61) when the two protective covers (41) are locked with each other, so that the end of the locking rod (6) is inserted into the locking gap (522); and an elastic reset member (7) for driving the locking rod (6) to escape is provided on the extension plate (13).

10. An electric energy meter box according to claim 9, characterized in that: The elastic return member (7) comprises a spring (71) in a compressed state, a guide block (72) fixed on the extension plate (13), and a baffle (73) fixed on the outer periphery of the locking rod (6); the guide block (72) is provided with a guide through hole (721) for the locking rod (6) to pass through; the baffle (73) is located on the side of the guide block (72) away from the base plate (5); and the two ends of the spring (71) are respectively fixed to the side surfaces of the guide block (72) and the baffle (73) which are close to each other.

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