Modularized assembly type electric energy metering box

Abstract

The invention relates to the technical field of electric energy metering device structures, in particular to a modularized assembled electric energy metering box which comprises a box body, a plurality of electronic modules located in the box body and a plurality of connecting structures used for fixing the electronic modules. By means of the mode that a plurality of right-angle clamping grooves in two vertical strips are used for clamping a plurality of clamping bodies, only the clamping bodies can be allowed to move in the vertical direction, the clamping bodies are limited in the vertical direction in cooperation with blocking arms, and therefore the connecting table and the first base are completely connected together, and the rapid assembly mode of the electronic module is achieved; due to the fact that the electronic module can push the blocking arm to rotate obliquely when moving horizontally, and the electronic module can be automatically staggered with the blocking arm when moving in the vertical direction, the electronic module can be automatically limited in the vertical direction through the blocking arm capable of automatically rebounding and resetting, the operation mode is simple, and the needed operation space is small.

Description

Technical Field

[0001] This invention relates to the technical field of electricity meter structure, and in particular to a modular assembled electricity meter box. Background Technology

[0002] An electricity metering box is a special enclosure used to house and protect electricity metering devices and their supporting equipment. It is one of the core infrastructures in a power system for realizing electricity monitoring, metering, and management. It typically integrates multiple functionally independent electronic modules, including: an electricity meter module as the core metering unit, a current transformer module for current and voltage conversion, a circuit breaker module for overload and short-circuit protection, a terminal module for data acquisition and communication, and a power supply module for supplying power to the internal equipment. These modules work together to complete functions such as accurate electricity metering, remote data transmission, and electricity safety protection.

[0003] In traditional metering box manufacturing and assembly processes, the aforementioned functional modules are typically fixed directly to the mounting beams or back plates inside the box using mechanical fasteners such as bolts and screws. This fixing method reveals significant drawbacks in practical applications. First, during assembly and subsequent maintenance, operators need to use specialized tools to tighten or disassemble each module individually, a cumbersome and time-consuming process that results in low overall assembly efficiency of the box. Furthermore, maintenance or module replacement is extremely inconvenient in confined spaces. Second, frequent tightening can easily lead to stripped threads or corroded bolts, resulting in unreliable connections and affecting long-term operational stability. Summary of the Invention

[0004] This invention provides a modular, assembled power metering box that can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A modular assembled power metering box includes a box body, a plurality of electronic modules located inside the box body, and a plurality of connection structures for fixing each of the electronic modules. The connection structure includes a connection platform and a base one that are distributed front to back and connected to the electronic module and the housing respectively, as well as two relatively inclined stop arms. Card groups are arranged opposite each other on the left and right sides of the connection platform. The card groups are composed of several card bodies arranged vertically. Two vertical strips are arranged opposite each other on the base one. Each vertical strip has a right-angle slot that cooperates with the card body. The stop arm blocks the card body that is inserted into the right-angle slot, and the stop arm is rotatable. An elastic body is provided on the stop arm to provide a restoring elastic force.

[0006] In some embodiments of the present invention, the connecting structure further includes a base two disposed opposite to the base one, the base two and the base one being connected by two telescopic units distributed opposite to each other, the telescopic unit being composed of a display plate one and a display plate two rotatably connected to each other, and the display plate one and the display plate two being rotatably connected to the base two and the base one, respectively. Both the stop arm and the elastic body are mounted on the display panel.

[0007] In some embodiments of the present invention, the first display panel and the second base are rotatably connected by a connecting arm and a curved arm, and the two rotatable connection points on the connecting arm and the two rotatable connection points on the curved arm are distributed in a quadrilateral shape. The curved position on the curved arm is used to provide space for the movement of the connecting arm when the first display panel is unfolded outward, and the end of the connecting arm is used in conjunction with the curved position of the curved arm. A spring is provided on the base 2 to provide elastic tension to the display panel 1. The connection point between the spring 1 and the display panel 1 is located between the connecting arm and the curved arm.

[0008] In some embodiments of the present invention, the connection position of the connecting arm to the first display panel is offset from the end of the connecting arm, and the end of the connecting arm is rotatably connected to the second display panel via a long arm.

[0009] In some embodiments of the present invention, a locking post and a guide groove are respectively provided on the stop arm and the connecting platform for mutual cooperation. The guide groove includes a first guide groove, a limiting groove and a second guide groove connected in sequence. The first guide groove is used to guide the locking post to the limiting groove. The limiting groove is used to lock the locking post. The second guide groove is used to allow the locking post to be pushed out from the guide groove. A gap is left in the right-angle slot for the card body to move along the vertical line connecting the connecting platform and the base.

[0010] In some embodiments of the present invention, a support plate is provided on the base, and a top column for pushing the connecting platform is slidably provided on the support plate, and the top column and the support plate are connected by a spring.

[0011] In some embodiments of the present invention, a back plate is provided inside the box, the back plate is densely covered with square holes, and a square post is provided on the base second to cooperate with the square holes at any position.

[0012] In some embodiments of the present invention, the square column is rotatably mounted on the base two, and a circular groove is provided on the square column, wherein the circular groove is the inscribed circle of the square column.

[0013] In some embodiments of the present invention, a pad strip is provided on the second base to abut against the back plate.

[0014] In some embodiments of the present invention, the base two is provided with a transmission wheel and a movable plate that cooperate with each other. The transmission wheel is connected to the square column in a transmission manner. The movable plate is slidably disposed on the base two, and the movable plate is provided with two retaining edges that cooperate with and limit the transmission wheel. A retaining ring and an adjusting column are respectively provided on the movable plate and the base two. The adjusting column is rotatably mounted on the base two. Several retaining plates are provided on the outer wall of the adjusting column. When the movable plate moves to one end of its travel, the retaining plates block and limit the retaining ring. A right-angle retaining seat is slidably mounted on the base two. The right-angle retaining seat is connected to the base two through an elastic body two. The right-angle retaining seat allows the adjusting column to rotate in one direction through the retaining plates.

[0015] The beneficial effects of this invention are as follows: By using several right-angle slots on the two vertical bars to position several card bodies, only the card bodies are allowed to move in the vertical direction. With the help of the stop arm to restrict the card bodies in the vertical direction, the connecting platform and the base are completely connected together, realizing a rapid assembly method for electronic modules. Since the electronic module can push the stop arm to tilt and rotate when moving horizontally, and can automatically misalign with the stop arm when moving vertically, the stop arm with automatic spring-back reset can be used to automatically restrict the electronic module in the vertical direction. The operation method is simple and requires little operating space. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 A structural diagram of the electronic module and its connection structure; Figure 3 yes Figure 2 A schematic diagram of the connecting structure in the middle; Figure 4 yes Figure 3 A schematic diagram of the exploded structure; Figure 5 yes Figure 4 Schematic diagram of the middle connecting platform; Figure 6 yes Figure 4 Schematic diagram of the structure of the central base; Figure 7 yes Figure 4 Schematic diagram of the structure of the telescopic unit; Figure 8 yes Figure 1 Schematic diagram of the backplate structure; Figure 9 yes Figure 4 Schematic diagram of the structure of the second central base; Figure 10 yes Figure 9 A structural diagram from another perspective; Figure 11 yes Figure 9 A schematic diagram of the clasp and its structure.

[0018] Figure label: 100. Box body; 200. Electronic modules; 300. Connecting structure; 301. Connecting platform; 302. Base 1; 303. Clip body; 304. Vertical bar; 305. Right-angle slot; 306. Stop arm; 307. Elastic body 1; 308. Base 2; 309. Telescopic unit; 310. Display panel 1; 311. Display panel 2; 312. Connecting arm; 313. Curved arm; 314. Spring 1; 315. Long arm; 400. Locking post; 401. Guide groove; 402. Guide inclined groove one; 403. Limiting groove; 404. Guide inclined groove two; 405. Support plate; 406. Top post; 407. Spring two; 500. Back plate; 501. Square hole; 502. Square column; 503. Circular groove; 504. Pad strip; 505. Drive wheel; 506. Moving plate; 507. Edge retainer; 508. Snap ring; 509. Adjusting column; 510. Snap plate; 511. Right angle snap seat; 512. Elastomer II. Detailed Implementation

[0019] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0020] like Figures 1 to 7 As shown, a modular assembled power metering box of the present invention includes a box body 100, a plurality of electronic modules 200 located inside the box body 100, and a plurality of connecting structures 300 for fixing each electronic module 200. The connection structure 300 includes a connection platform 301 and a base 302 that are distributed front to back and connected to the electronic module 200 and the housing 100 respectively, as well as two relatively inclined stop arms 306. Card groups are arranged opposite each other on the left and right sides of the connection platform 301. The card groups are composed of several card bodies 303 arranged vertically. Two vertical bars 304 are arranged opposite each other on the base 302. Each vertical bar 304 has a right-angle slot 305 that cooperates with the card body 303. The stop arm 306 blocks the card body 303 that is inserted into the right angle card slot 305, and the stop arm 306 is rotatable. An elastic body 307 is provided on the stop arm 306 to provide it with a reset elastic force.

[0021] Specifically, the electronic module 200 can be fixed inside the housing 100 via the connecting structure 300; the connecting platform 301 and the base 302 within the connecting structure 300 are distributed in a front-to-back manner along the longitudinal direction of the housing 100, with the base 302 located inside the housing 100 and the connecting platform 301 installed on the back of the electronic module 200. For ease of processing and assembly, the connecting platform 301 can be an integral structure with the electronic module 200, or it can be fixed to the electronic module 200 by bolts or other means, thus ensuring that each electronic module 200 can be equipped with a connecting platform 301. Two card groups on the connecting platform 301 are located on its left and right sides, respectively, and several card bodies 303 within each card group cooperate with several right-angle slots 305 on the vertical bar 304. The vertical bar 304 can be, for example,... Figure 5 The right angle shown can also be a column or other shape, as long as it can be inserted into the corresponding right angle slot 305. The right angle slot 305 consists of a horizontal part and a vertical part. The horizontal part of the right angle slot 305 is located on the upper side of its vertical part and extends to the side wall of the vertical bar 304. The vertical part of the right angle slot 305 is located inside the vertical bar 304. When the card body 303 is used with the right angle slot 305, the card body 303 can slide into the right angle slot 305 through the end opening of the horizontal part of the right angle slot 305. Then the card body 303 slides down through the vertical part of the right angle slot 305 and finally locks into the bottom of the vertical part of the right angle slot 305, thereby completing the assembly of the card body 303 and the right angle slot 305.

[0022] Since the locking body 303 within the right-angle slot 305 is only allowed to move vertically, simply restricting the locking body 303 or the top of the connecting platform 301 is sufficient to lock the connecting platform 301 to the base 302. This restriction is primarily achieved by the stop arm 306. When the connecting platform 301 moves towards the base 302, the back of the connecting platform 301 is allowed to contact the end of the stop arm 306. Because the stop arm 306 is tilted and rotatable, when the connecting platform 301 contacts the end of the stop arm 306, the connecting platform 301... 1. The stop arm 306 will rotate. At this time, the elastic body 307 will undergo elastic deformation. As the locking body 303 is inserted into the right-angle locking groove 305 and moves downward to the specified position, the stop arm 306 moves relative to the connecting platform 301 to the top of the connecting platform 301. At this time, the elastic body 307 pushes the stop arm 306 to reset. In this way, the stop arm 306 restricts the top of the connecting platform 301, preventing the connecting platform 301 from moving in the vertical direction. The connecting platform 301 and the base 302 complete the connection work, and the electronic module 200 realizes the rapid assembly work.

[0023] Since the vertical displacement of the card body 303 is small during assembly, it is only necessary to provide space for the electronic module 200 to move within a small range in the vertical direction. With the structure of several card bodies 303 and several right-angle slots 305, this small range of movement can be used to achieve a multi-point fixing mode for the electronic module 200, which improves the assembly firmness of the electronic module 200, prevents it from shaking, and saves operating space. That is, when assembling the electronic module 200, it only needs to be moved towards the inside of the housing 100, and then moved downward by a small displacement. The operation is simple and the space occupancy rate is low.

[0024] By using several right-angle slots 305 on the two vertical bars 304 to position several card bodies 303, only the card bodies 303 are allowed to move in the vertical direction. With the cooperation of the stop arm 306 to restrict the card bodies 303 in the vertical direction, the connecting platform 301 and the base 302 are completely connected together, realizing a rapid assembly method for the electronic module 200. Since the electronic module 200 can push the stop arm 306 to tilt and rotate when moving horizontally, and can automatically misalign with the stop arm 306 when moving vertically, the automatically rebounding stop arm 306 can be used to automatically restrict the electronic module 200 in the vertical direction. The operation method is simple and requires little operating space.

[0025] In some embodiments of the present invention, such as Figure 7As shown, the connecting structure 300 also includes a second base 308 disposed opposite to the first base 302. The second base 308 and the first base 302 are connected by two telescopic units 309 distributed opposite to each other. The telescopic unit 309 is composed of a first display plate 310 and a second display plate 311 that are rotatably connected to each other, and the first display plate 310 and the second display plate 311 are rotatably connected to the second base 308 and the first base 302, respectively. Both the stop arm 306 and the elastic body 307 are mounted on the display plate 311.

[0026] The second base 308 supports the first base 302 through two telescopic units 309. The first display panel 310 and the second display panel 311 in the telescopic unit 309 can rotate relative to each other, so that the first display panel 310 and the second display panel 311 can be folded together or unfolded outward. The movement modes of the first display panel 310 and the second display panel 311 in the two telescopic units 309 are opposite, so the distance between the first base 302 and the second base 308 can be extended through the two telescopic units 309.

[0027] During assembly, the telescopic unit 309 is in the unfolded state. At this time, the assembly position of the electronic module 200 is far away from the base 2 308. When the electronic module 200 is installed on the base 1 302 through the connecting table 301, the electronic module 200 is pushed to move towards the inside of the box 100. At this time, the base 1 302 can push the display plate 1 310 and display plate 2 311 in the telescopic unit 309 to fold together, and the base 1 302 is close to the base 2 308, thereby transferring the electronic module 200 to a fixed position. When disassembling, the telescopic unit 309 is used to send the electronic module 200 outward, so that the electronic module 200 to be disassembled is misaligned with other electronic modules 200 in the horizontal direction, which is convenient for workers to operate and avoids the small gap between two adjacent electronic modules 200 when multiple electronic modules 200 are in a fixed position, which makes it inconvenient to carry out disassembly and assembly operations.

[0028] Since both the stop arm 306 and the elastic body 307 are mounted on the second display plate 311, the stop arm 306 and the connecting platform 301 are separated when the telescopic unit 309 is unfolded. After the connecting platform 301 and the base 302 are assembled, the stop arm 306 is located above the connecting platform 301 in the vertical direction. When the telescopic unit 309 is folded, the connecting platform 301 automatically moves to the lower side of the stop arm 306. At this time, the stop arm 306 automatically limits the connecting platform 301 in the vertical direction.

[0029] In some embodiments of the present invention, such as Figure 7As shown, the first display panel 310 and the second base 308 are rotatably connected by a connecting arm 312 and a curved arm 313. The two rotatable connection points on the connecting arm 312 and the two rotatable connection points on the curved arm 313 are distributed in a quadrilateral shape. The curved position on the curved arm 313 is used to provide space for the movement of the connecting arm 312 when the first display panel 310 is unfolded outward. The end of the connecting arm 312 is used in conjunction with the curved position of the curved arm 313. A spring 314 is provided on the base 308 to provide elastic tension to the display panel 310. The connection between the spring 314 and the display panel 310 is located between the connecting arm 312 and the curved arm 313.

[0030] By using connecting arms 312 and curved arms 313 to connect base 308 and display plate 310, a quadrilateral connection can be formed. This connection allows the four sides to move freely relative to each other. Figure 7 As shown, the positions of the connecting arm 312 and the curved arm 313 on the base 308 are fixed, meaning the sides where these two points are located are fixed, while the other three sides of the quadrilateral can move freely. When the display plate 310 is in the retracted state, it is parallel to and close to the base 308. The elastic force provided by the spring 314 keeps the display plate 310 stationary. When the display plate 310 is extended, the connecting arm 312 and the curved arm 313 rotate and overcome the elastic force of the spring 314 to push the display plate 310 outward. The spring 314 is stretched. When the connection position of the connecting arm 312 and the display panel 310 moves from one side of the spring 314 to the other side, the length of the spring 314 reaches its maximum value and gradually shortens. At this time, the elastic force provided by the spring 314 assists the display panel 310 to extend outward. When the end of the connecting arm 312 is engaged in the bent position of the curved arm 313, the connecting arm 312 and the curved arm 313 are locked together. At this time, the position of the display panel 310 is fixed. In this way, the spring 314 can provide positioning elastic force for both the retracted and extended states of the display panel 310, preventing the display panel 310 from moving arbitrarily.

[0031] In some embodiments of the present invention, the connection position of the connecting arm 312 and the first display panel 310 is offset from the end of the connecting arm 312, and the end of the connecting arm 312 is rotatably connected to the second display panel 311 by a long arm 315.

[0032] like Figure 7As shown, the connection position between the connecting arm 312 and the first display panel 310 is no longer located at the end of the connecting arm 312. That is, the area between the connection position between the connecting arm 312 and the first display panel 310 and the end of the connecting arm 312 is used as an extension area. When the first display panel 310 is extended, the connecting arm 312 rotates relative to the first display panel 310. The connecting arm 312 uses its extension area and long arm 315 to help push the second display panel 311 to extend outward. Thus, the movement of the second display panel 311 can be directly driven by the movement of the first display panel 310, realizing the synchronous folding or unfolding movement mode of the first display panel 310 and the second display panel 311.

[0033] In some embodiments of the present invention, a locking post 400 and a guide groove 401 are respectively provided on the stop arm 306 and the connecting platform 301 for mutual cooperation. The guide groove 401 includes a first guide groove 402, a limiting groove 403 and a second guide groove 404 connected in sequence. The first guide groove 402 is used to guide the locking post 400 to the limiting groove 403. The limiting groove 403 is used to lock the locking post 400. The second guide groove 404 is used to allow the locking post 400 to be pushed out from the guide groove 401. A gap is left in the right-angle card slot 305 for the card body 303 to move along the vertical line connecting the connecting platform 301 and the base 302.

[0034] like Figure 5 As shown, both guide groove 1 402 and guide groove 2 404 are inclined. The limiting groove 403 deviates from the locking post 400 along the rotation direction of the locking post 400. The area between guide groove 1 402 and limiting groove 403 is an arc with the rotation axis of the stop arm 306 as the center point. The area between limiting groove 403 and guide groove 2 404 is also an arc with the rotation axis of the stop arm 306 as the center point. The elastic body 1 307 plays an auxiliary positioning role for the stop arm 306.

[0035] When the connecting platform 301 moves synchronously with the base 302 towards the base 308, the inlet of the guide groove 402 corresponds to the locking post 400, allowing the locking post 400 to slide smoothly into the guide groove 402. The guide groove 402 guides the locking post 400, causing the stop arm 306 to tilt and rotate, and the elastic body 307 to undergo elastic deformation. When the locking post 400 moves to the area between the guide groove 402 and the limiting groove 403, the elastic body 307 pushes the stop arm 306 to automatically engage in the limiting groove 403. At this time, the connecting platform 301 and the electronic module 200 cannot move away from the base 308, meaning the telescopic unit 309 is locked. At the same time, the stop arm 306 blocks and restricts the top of the connecting platform 301, and the assembly of the electronic module 200 is completed. When it is necessary to disassemble the electronic module 200, the right-angle slot 305 provides a movable gap for the card body 303, allowing the connecting platform 301 to continue moving a small distance toward the base 2 308. At this time, the card post 400 slides out from the limiting groove 403, and with the help of the elastic body 1 307, the card post 400 slides smoothly into the guide inclined groove 2 404. As the connecting platform 301 moves away from the base 2 308, the card post 400 slides smoothly from the guide inclined groove 2 404, and the stop arm 306 stops blocking the top of the connecting platform 301.

[0036] The inlet of guide sluice 1 402 and the outlet of guide sluice 2 404 are offset on the connecting platform 301. When the locking post 400 slides in guide sluice 2 404, the stop arm 306 gradually rotates from the right side of its initial position to the left side of its initial position. That is, the elastic body 307 gradually changes from an elastic compression state to an elastic tension state. When the locking post 400 separates from guide sluice 2 404, the elastic body 307 pulls the stop arm 306 from the leftward deviation state to gradually move back to the initial position, and the elastic body 307 returns to its natural state.

[0037] In some embodiments of the present invention, a support plate 405 is provided on the base 302, and a top column 406 for pushing the connecting platform 301 is slidably provided on the support plate 405. The top column 406 and the support plate 405 are connected by a spring 407.

[0038] like Figure 6 As shown, the support plate 405 provides support for the top column 406, and the spring 407 provides a pushing force for the top column 406 to push the connecting platform 301. This allows the card body 303 to be fixed in position within the right-angle slot 305, preventing the card body 303 from moving freely within the vertical area of ​​the right-angle slot 305 due to the gap left by the right-angle slot 305. When it is necessary to disassemble the electronic module 200, the small-range movement of the connecting platform 301 toward the base 308 can overcome the elastic force of the spring 407 and push the top column 406 to slide on the support plate 405.

[0039] In some embodiments of the present invention, such as Figure 8 and Figure 10 As shown, a back plate 500 is provided inside the box 100, and square holes 501 are densely distributed on the back plate 500. A square post 502 is provided on the base 308 to cooperate with the square holes 501 at any position.

[0040] The square post 502 can be inserted into the square hole 501 at any position on the back plate 500, so that the base 2 308 can be fixed at any position on the back plate 500 through the square post 502. This allows for easy and quick adjustment of the assembly position of the electronic module 200, improving the convenience and applicability of assembly.

[0041] In some embodiments of the present invention, the square column 502 is rotatably mounted on the base 308, and a circular groove 503 is provided on the square column 502, wherein the circular groove 503 is the inscribed circle of the square column 502.

[0042] like Figure 10 As shown, when the base 2 308 is connected to the back plate 500, the square post 502 can be inserted into the square hole 501. When the insertion depth of the square post 502 reaches a certain position, the circular groove 503 cooperates with the square hole 501. At this time, the square post 502 can be rotated so that the circular groove 503 rotates in the square hole 501. Furthermore, some of the square posts 502 on both sides of the circular groove 503 are stuck on the front and rear sides of the back plate 500, thereby realizing the quick locking of the position of the base 2 308 on the back plate 500 and improving the connection firmness.

[0043] In some embodiments of the present invention, in order to quickly position the insertion depth of the square post 502 and ensure that the base 2 308 is in a neat position after installation, a pad 504 that abuts against the back plate 500 can be provided on the base 2 308. When the pad 504 contacts the back plate 500, the base 2 308 moves to the specified position, and the circular groove 503 and the square hole 501 cooperate with each other. At this time, the square post 502 can be rotated and the clamping work is completed.

[0044] In some embodiments of the present invention, a transmission wheel 505 and a movable plate 506 are provided on the base 2 308 for mutual cooperation. The transmission wheel 505 is connected to the square column 502 for transmission. The movable plate 506 is slidably disposed on the base 2 308, and the movable plate 506 is provided with two retaining edges 507 that cooperate with and limit the transmission wheel 505. A retaining ring 508 and an adjusting column 509 are respectively provided on the movable plate 506 and the base 308. The adjusting column 509 is rotatably mounted on the base 308. Several retaining plates 510 are provided on the outer wall of the adjusting column 509. When the movable plate 506 moves to one end of its stroke, the retaining plates 510 block and limit the retaining ring 508. A right-angle retaining seat 511 is slidably mounted on the base 308. The right-angle retaining seat 511 is connected to the base 308 through an elastic body 512, and the right-angle retaining seat 511 allows the adjusting column 509 to rotate in one direction through the retaining plates 510.

[0045] like Figure 9 As shown, by using the movable plate 506, the transmission wheel 505 can be driven to rotate, thereby causing the square column 502 to rotate. The two abutments 507 on the movable plate 506 can limit the relative position of the movable plate 506 and the transmission wheel 505, thereby limiting the rotation angle of the transmission wheel 505 and the square column 502. At the same time, the angle of the square column 502 when locked and the angle when inserted can be quickly positioned, which is convenient for operation.

[0046] like Figure 11 As shown, several locking plates 510 on the adjusting column 509 are evenly distributed along the circumference of the adjusting column 509. The area between two adjacent locking plates 510 can form a restriction on the locking ring 508. The moving direction of the right-angle locking seat 511 on the base 308 is parallel to the moving direction of the moving plate 506 on the base 308. When the moving plate 506 and the locking ring 508 move downward, the locking ring 508 can push the adjusting column 509 to rotate through one of the locking plates 510 on the adjusting column 509. The locking plate 510 will then push the right-angle locking seat 511 away from the adjusting column 509. At this time, the adjusting column 509 is allowed to rotate in the positive direction, and the elastic body 512 undergoes elastic deformation. When the moving plate 506 and the retaining ring 508 move to the specified position, the stop 507 contacts the transmission wheel 505. At this time, another retaining plate 510 on the adjusting column 509 overlaps with the retaining ring 508 and restricts the retaining ring 508 from moving in the opposite direction. The right-angle retaining seat 511 locks one of the retaining plates 510 on the adjusting column 509, restricting the adjusting column 509 from rotating in the opposite direction. This achieves the purpose of locking the positions of the retaining ring 508, the moving plate 506, and the square column 502. When it is necessary to adjust the position of the base 2 308 on the back plate 500, simply push the right-angle retaining seat 511 open so that the adjusting column 509 can rotate in the opposite direction, which allows the moving plate 506 to move upward.

[0047] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A modular, assembled electricity metering box, characterized in that, It includes a housing, several electronic modules located inside the housing, and several connection structures for fixing each of the electronic modules; The connection structure includes a connection platform and a base one that are distributed front to back and connected to the electronic module and the housing respectively, as well as two relatively inclined stop arms. Card groups are arranged opposite each other on the left and right sides of the connection platform. The card groups are composed of several card bodies arranged vertically. Two vertical strips are arranged opposite each other on the base one. Each vertical strip has a right-angle slot that cooperates with the card body. The stop arm blocks the card body that is inserted into the right-angle slot, and the stop arm is rotatable. An elastic body is provided on the stop arm to provide a restoring elastic force.

2. The modular assembled power metering box according to claim 1, characterized in that, The connection structure also includes a base two disposed opposite to the base one. The base two and the base one are connected by two telescopic units that are distributed opposite to each other. The telescopic unit is composed of a display plate one and a display plate two that are rotatably connected to each other, and the display plate one and the display plate two are rotatably connected to the base two and the base one, respectively. Both the stop arm and the elastic body are mounted on the display panel.

3. A modular, assembled energy metering box according to claim 2, characterized in that, The first display panel and the second base are rotatably connected by a connecting arm and a curved arm. The two rotating connection points on the connecting arm and the two rotating connection points on the curved arm are distributed in a quadrilateral shape. The curved position on the curved arm is used to provide space for the movement of the connecting arm when the first display panel is unfolded outward. The end of the connecting arm is used in conjunction with the curved position of the curved arm. A spring is provided on the base 2 to provide elastic tension to the display panel 1. The connection point between the spring 1 and the display panel 1 is located between the connecting arm and the curved arm.

4. A modular, assembled energy metering box according to claim 3, characterized in that, The connection position of the connecting arm to the first display panel is offset from the end of the connecting arm, and the end of the connecting arm is rotatably connected to the second display panel via a long arm.

5. A modular, assembled energy metering box according to claim 4, characterized in that, The stop arm and the connecting platform are respectively provided with a locking post and a guide groove for mutual use. The guide groove includes a guide groove one, a limiting groove and a guide groove two connected in sequence. The guide groove one is used to guide the locking post to the limiting groove. The limiting groove is used to lock the locking post. The guide groove two is used to allow the locking post to be pushed out from the guide groove. A gap is left in the right-angle slot for the card body to move along the vertical line connecting the connecting platform and the base.

6. A modular, assembled energy metering box according to claim 5, characterized in that, A support plate is provided on the base, and a top column for pushing the connecting platform is slidably provided on the support plate. The top column and the support plate are connected by a spring.

7. A modular, assembled energy metering box according to claim 2, characterized in that, A back plate is provided inside the box, and square holes are densely distributed on the back plate. A square post is provided on the base two to cooperate with the square holes at any position.

8. A modular, assembled energy metering box according to claim 7, characterized in that, The square column is rotatably mounted on the base two, and a circular groove is provided on the square column, wherein the circular groove is the inscribed circle of the square column.

9. A modular, assembled energy metering box according to claim 8, characterized in that, A pad strip is provided on the second base to abut against the back plate.

10. A modular, assembled energy metering box according to claim 9, characterized in that, The base two is provided with a transmission wheel and a movable plate that cooperate with each other. The transmission wheel is connected to the square column. The movable plate is slidably disposed on the base two and is provided with two retaining edges that cooperate with and limit the movement of the transmission wheel. A retaining ring and an adjusting column are respectively provided on the movable plate and the base two. The adjusting column is rotatably mounted on the base two. Several retaining plates are provided on the outer wall of the adjusting column. When the movable plate moves to one end of its travel, the retaining plates block and limit the retaining ring. A right-angle retaining seat is slidably mounted on the base two. The right-angle retaining seat is connected to the base two through an elastic body two. The right-angle retaining seat allows the adjusting column to rotate in one direction through the retaining plates.

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