Protective device for electric energy metering box
By employing a double-sealing structure and a complex lock design in the protective device of the electricity metering box, the problems of insufficient sealing performance and easy opening of the lock are solved, achieving higher sealing performance and security.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-15
- Publication Date
- 2026-04-03
AI Technical Summary
Existing electricity metering boxes have inadequate sealing performance, their internal electronic components are easily damaged, and their locks are easily opened, resulting in a low safety factor.
It adopts a double sealing structure and a complex locking design, including the contact between the outer sealing strip and the main door, and the interference fit between the inner sealing strip and the box body. Combined with mechanical door locks and special locks, the box door can be opened through a multi-step operation, which improves sealing and security.
It significantly improves the sealing effect of the enclosure, effectively preventing moisture and dust from entering, preventing damage to internal electronic components, increasing the difficulty of operating the lock, and improving security.
Smart Images
Figure CN121784338A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the technical field of electricity metering boxes, and in particular to a protective device for electricity metering boxes. Background Technology
[0002] Electricity metering boxes are devices in power systems that carry core components such as electricity metering instruments, terminals, and protective switches. They are widely used in residential communities and industrial and commercial parks.
[0003] Since most electricity metering boxes need to be exposed to the outdoor environment for a long time, they need to be equipped with protective devices to resist adverse factors such as wind, rain, dust, ultraviolet radiation, external impact and malicious damage. Therefore, protective devices have become an essential component of electricity metering box systems.
[0004] Currently, most protective devices for electricity metering boxes on the market adopt a simple box-type structure, mainly composed of a cold-rolled steel plate protective shell, ordinary rubber sealing strips, a hinged protective door, and a simple lock. The assembly method is typically as follows: the protective shell is fixed to a wall or ground support using expansion bolts, the electricity metering box is embedded inside the protective shell, and the seal is achieved by the fit between the protective door and the shell, with the lock providing anti-theft protection. This type of protective device often uses a single rubber strip sealing structure, and there are no dedicated sealing components at the openings where cables enter the protective device. In heavy rain or dusty weather, moisture and dust can easily penetrate the internal electronic components, resulting in insufficient sealing performance. Furthermore, the simple structure of the ordinary lock makes it easy to pry open, posing a risk of the metering equipment being stolen or the metering data being tampered with.
[0005] In the process of implementing this embodiment, the inventors discovered at least the following problems: Existing protective devices for electricity metering boxes have insufficient sealing performance, internal electronic components are easily damaged, locks are easily opened, and the safety factor is low. Summary of the Invention
[0006] The purpose of this invention is to provide a protective device for electricity metering boxes, which solves the technical problems of existing protective devices for electricity metering boxes, such as insufficient sealing performance, easy damage to internal electronic components, easy opening of locks, and low safety factor.
[0007] Invention solution: This invention provides a protective device for an electricity metering box, including a box body, a main door, a secondary door, two secondary doors, and a lock assembly; the box body is provided with a partition and an outer sealing strip, the partition dividing the box body into a management compartment and a metering compartment, and the partition is provided with a slot; the main door is hinged to the box body and is provided with an inner sealing strip and a mechanical lock; the main door can abut against the outer sealing strip, and the inner sealing strip is interference-fitted to the box body; the secondary door is hinged to the box body and is located outside the management compartment, and is provided with a lock hole and a locking frame; The lock assembly includes a limiting seat, a spring, a lock frame, a lock cylinder, a connecting post, a handle, and an elastic element. The limiting seat is fixedly installed on the partition and located in the management compartment. One end of the connecting post is fixedly connected to the lock frame, and the other end is detachably connected to the handle, which passes through the limiting seat. The spring is fitted onto the connecting post and abuts against both the limiting seat and the lock frame. The elastic element is installed in the management compartment and abuts against one of the two sets of doors. The two sets of doors are hinged to the compartment body and located outside the metering compartment.
[0008] Furthermore, the lock head includes a first locking wing, a locking pin, and a second locking wing; the locking pin is pivotally connected to the lock frame and is provided with a triangular lock core; the first locking wing is connected to the locking pin and can be disposed in the locking frame; the second locking wing is connected to the locking pin and can be disposed in the locking slot.
[0009] Furthermore, the lock frame is provided with a flexible limiting strip, and the flexible limiting strip is provided with a positioning groove.
[0010] Furthermore, the lock frame is provided with a positioning part.
[0011] Furthermore, the limiting seat is provided with a spring groove.
[0012] Furthermore, the handle is provided with friction texture.
[0013] Furthermore, the housing is provided with a wire hole sealing sleeve; the wire hole sealing sleeve is provided with an elastic flap.
[0014] Furthermore, the bottom of the housing is provided with a ventilation opening, and a filter screen is detachably installed on the outside of the ventilation opening.
[0015] Furthermore, the upper part of the box is equipped with a rainproof roof.
[0016] Beneficial Effects: The present invention provides a protective device for an electricity metering box. The outer sealing strip of the box body abuts against the main box door, while the inner sealing strip of the main box door is interference-fitted with the box body, forming a double-sealing structure. This significantly improves the overall sealing effect of the box, effectively preventing the intrusion of moisture and dust during heavy rain and dusty weather, thus avoiding damage to internal electronic components. When it is necessary to operate the electronic components in the management and metering compartments, the mechanical door lock must first be opened with a key to open the main box door. At this time, the lock hole and the lock head are not aligned, requiring one hand to pull the handle to align the lock head with the lock hole. Then, a special lock tool is used to turn the lock head 90 degrees, separating the lock head from the locking frame and slot. The elastic element springs the second box door open a certain distance, allowing the second box door to be pulled open. The unlocking method of the second box door requires the cooperation of two hands, and in a static state, the lock hole and lock head are misaligned. Only the lock hole is exposed on the outer surface of the second box door, making it difficult for thieves to operate. Furthermore, if the box body is installed low, thieves will not be able to find the handle's position and will be unable to open the second box door. Therefore, this type of power meter box protection device has good sealing performance, the internal electronic components are not easily damaged, the lock is not easily opened, and the safety factor is high. Attached Figure Description
[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the structure of the power metering box protection device provided in this embodiment; Figure 2 This is a schematic diagram of the structure of the protective device for the power metering box provided in this embodiment; Figure 3 This is a schematic diagram of the structure of the protective device for the power metering box provided in this embodiment; Figure 4 This is a schematic diagram of the structure of the protective device for the power metering box provided in this embodiment; Figure 5 This is a schematic diagram of the protective device for the power metering box provided in this embodiment; Figure 6 This is a schematic diagram of the protective device for the power metering box provided in this embodiment; Figure 7 This is a schematic diagram of the protective device for the power metering box provided in this embodiment.
[0019] icon: 100-Box body; 110-Baffle; 111-Card slot; 120-Outer sealing strip; 130-Management compartment; 140-Metering compartment; 150-Wire hole sealing sleeve; 160-Elastic flap ring; 170-Ventilation opening; 180-Filter screen; 190-Rainproof top; 200 - Main door; 210 - Inner sealing strip; 220 - Mechanical door lock; 300 - a set of box doors; 310 - a keyhole; 320 - a card frame; 400 - Second auxiliary door; 500 - Lock assembly; 510 - Limiting seat; 511 - Spring groove; 520 - Spring; 530 - Lock frame; 531 - Flexible limiting strip; 532 - Positioning groove; 533 - Positioning part; 540 - Lock head; 541 - First lock wing; 542 - Lock pin; 543 - Second lock wing; 544 - Triangular lock cylinder; 550 - Connecting pin; 560 - Handle; 561 - Friction texture; 570 - Elastic element. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0021] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.
[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0023] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0024] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.
[0025] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0026] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0027] This embodiment provides a protective device for an electricity metering box. Please refer to [reference needed]. Figure 1-7 As shown, the enclosure includes a housing 100, a main door 200, a secondary door 300, two secondary doors 400, and a lock assembly 500. The housing 100 has a partition 110 and an outer sealing strip 120. The partition 110 divides the housing 100 into a management compartment 130 and a metering compartment 140. The partition 110 has a slot 111. The main door 200 is hinged to the housing 100 and has an inner sealing strip 210 and a mechanical lock 220. The main door 200 can abut against the outer sealing strip 120, and the inner sealing strip 210 is press-fitted to the housing 100. The secondary door 300 is hinged to the housing 100 and is located outside the management compartment 130. It has a lock hole 310 and a locking frame 320. The lock assembly... Component 500 includes a limiting seat 510, a spring 520, a lock frame 530, a lock head 540, a connecting post 550, a handle 560, and an elastic element 570. The limiting seat 510 is fixedly installed on the partition 110 and is located in the management compartment 130. One end of the connecting post 550 is fixedly connected to the lock frame 530, and the other end is detachably connected to the handle 560 and passes through the limiting seat 510. The spring 520 is fitted onto the connecting post 550 and abuts against the limiting seat 510 and the lock frame 530 respectively. The elastic element 570 is installed in the management compartment 130 and abuts against a set of doors 300. The two sets of doors 400 are hinged to the compartment 100 and are located outside the metering compartment 140.
[0028] Specifically, the enclosure 100 provides installation space for electrical components. The outer sealing strip 120 is made of 2mm thick rubber. The partition 110 separates the internal space of the enclosure 100 for convenient classification and management of electronic components. The width of the partition 110 is smaller than the width of the enclosure 100, ensuring a certain distance between the secondary enclosure door 300 and the main enclosure door 200. The partition 110 has two slots 111, located in the management compartment 130 and the metering compartment 140 respectively, for limiting the lock cylinder 540. The main enclosure door 200 is connected to the enclosure 100 by a hinge. The inner sealing strip 210 is made of elastic rubber. The mechanical door lock 220 adopts a conventional anti-theft lock structure. The unlocking method of the secondary enclosure door 400 is the same as that of the secondary enclosure door 300. The unlocking method of 00 is the same; a set of cabinet doors 300 provides separate protection for the management compartment 130, the key hole 310 is used to allow professional locks to open the lock head 540, the locking frame 320 is used to lock the lock head 540; the lock assembly 500 is used to control the opening or closing of a set of cabinet doors 300, the limit seat 510 is used to limit the position of the connecting column 550 to ensure the stable running trajectory of the lock head 540, the handle 560 is pulled, the connecting column 550 moves downward, the lock frame 530 moves downward, so that the key hole 310 corresponds to the lock head 540, the spring 520 is used to reset the lock frame 530 and the lock head 540, the elastic element 570 is used to pop open a set of cabinet doors 300, the elastic element 570 includes a fixed cylinder and an elastic telescopic head. The outer sealing strip 120 of the housing 100 abuts against the main door 200, while the inner sealing strip 210 of the main door 200 is interference-fitted with the housing 100, forming a double sealing structure, which greatly improves the overall sealing effect of the housing 100. When it is necessary to operate the electronic components in the management compartment 130 and the metering compartment 140, the mechanical door lock 220 must first be opened with a key to open the main door 200. At this time, the position of the lock hole 310 and the lock head 540 does not correspond. A hand needs to pull the handle 560 to make the lock head 540 correspond to the lock hole 310. Then, the lock head 540 is turned 90 degrees with a special lock, and the lock head 540 separates from the card frame 320 and the card slot 111. The elastic element 570 pushes the second door 300 open a certain distance. At this time, the second door 300 is pulled to open it.
[0029] In this embodiment, the lock head 540 includes a first locking wing 541, a locking pin 542, and a second locking wing 543; the locking pin 542 is pivotally connected to the lock frame 530 and is provided with a triangular lock core 544; the first locking wing 541 is connected to the locking pin 542 and can be disposed in the locking frame 320; the second locking wing 543 is connected to the locking pin 542 and can be disposed in the locking slot 111.
[0030] Specifically, the first locking wing 541, the locking pin 542, and the second locking wing 543 are integrally formed. The lock cylinder can be turned by using a triangular hole wrench, thereby causing the first locking wing 541 to disengage from the locking frame 320 and the second locking wing 543 to disengage from the locking groove 111, which in turn allows the elastic element 570 to pop open a set of cabinet doors 300.
[0031] In this embodiment, the lock frame 530 is provided with a flexible limiting strip 531, and the flexible limiting strip 531 is provided with a positioning groove 532.
[0032] Specifically, when locking, rotating the lock head 540 causes the first locking wing 541 and the second locking wing 543 to first make interference contact with the flexible limiting strip 531. When the first locking wing 541 and the second locking wing 543 rotate to the positioning groove 532, there is a certain gap between the first locking wing 541 and the second locking wing 543 and the flexible limiting strip 531. The flexible limiting strip 531 is designed to prevent the first locking wing 541 and the second locking wing 543 from swinging freely.
[0033] In this embodiment, the lock frame 530 is provided with a positioning part 533.
[0034] Specifically, when the handle 560 is pulled to align the lock hole 310 with the lock head 540, the positioning part 533 abuts against the limit seat 510; the positioning part 533 is designed to facilitate the alignment of the lock hole 310 with the lock head 540.
[0035] In this embodiment, the limiting seat 510 is provided with a spring groove 511.
[0036] Specifically, the spring groove 511 is used to limit the movement of the spring 520, thereby ensuring the stable operation of the spring 520.
[0037] In this embodiment, the handle 560 is provided with friction texture 561.
[0038] Specifically, the friction texture 561 increases the friction between the hand and the handle 560, making it easier for the operator to turn the handle 560.
[0039] In this embodiment, the housing 100 is provided with a wire hole sealing sleeve 150; the wire hole sealing sleeve 150 is provided with an elastic flap ring 160.
[0040] Specifically, the wire hole sealing sleeve 150 is made of elastic rubber. The wire hole sealing sleeve 150 is integrally formed with the inner elastic flap ring 160. When the cable passes through the wire hole sealing sleeve 150, the elastic flap ring 160 tightly fits the outer wall of the cable under its own elasticity, thereby sealing the cable entry point and preventing moisture and dust from entering the interior of the housing 100 through the cable through hole.
[0041] In this embodiment, the bottom of the housing 100 is provided with a vent 170, and a filter screen 180 is detachably installed on the outside of the vent 170.
[0042] Specifically, the vent 170 allows air circulation between the inside of the enclosure 100 and the outside, serving a heat dissipation function; the filter 180 effectively filters dust and impurities in the air, preventing dust from entering the enclosure 100 and affecting the operation of electronic components; when the filter 180 is clogged, it can be removed for cleaning or replacement, making maintenance convenient.
[0043] In this embodiment, the upper part of the box 100 is provided with a rainproof roof 190.
[0044] Specifically, the rainproof roof 190 can effectively guide rainwater to flow down along both sides of the rainproof roof 190, preventing rainwater from accumulating on the top of the box 100.
[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A protective device for an electricity metering box, characterized in that, Includes a cabinet body (100), a main cabinet door (200), a secondary cabinet door (300), a second secondary cabinet door (400), and a lock assembly (500); The box (100) is provided with a partition (110) and an outer sealing strip (120). The partition (110) divides the box (100) into a management compartment (130) and a metering compartment (140). The partition (110) is provided with a slot (111). The main door (200) is hinged to the box body (100) and is provided with an inner sealing strip (210) and a mechanical door lock (220). The main door (200) can abut against the outer sealing strip (120), and the inner sealing strip (210) is interference-fitted to the box body (100); The set of cabinet doors (300) are hinged to the cabinet body (100) and are located outside the management compartment (130), and are provided with a lock hole (310) and a card frame (320). The lock assembly (500) includes a limiting seat (510), a spring (520), a lock frame (530), a lock head (540), a connecting post (550), a handle (560), and an elastic element (570). The limiting seat (510) is fixedly installed on the partition (110) and is located in the management compartment (130). One end of the connecting column (550) is fixedly connected to the lock frame (530), and the other end is detachably connected to the handle (560) and passes through the limiting seat (510). The spring (520) is fitted on the connecting column (550) and abuts against the limiting seat (510) and the lock frame (530) respectively. The elastic element (570) is installed in the management compartment (130) and abuts against the set of cabinet doors (300). The two auxiliary doors (400) are hinged to the box body (100) and are located outside the metering chamber (140).
2. The protective device for an electricity metering box according to claim 1, characterized in that, The lock head (540) includes a first locking wing (541), a locking pin (542), and a second locking wing (543); the locking pin (542) is pivotally connected to the lock frame (530) and is provided with a triangular lock core (544); the first locking wing (541) is connected to the locking pin (542) and can be disposed in the card frame (320); the second locking wing (543) is connected to the locking pin (542) and can be disposed in the card slot (111).
3. The protective device for an electricity metering box according to claim 2, characterized in that, The lock frame (530) is provided with a flexible limiting strip (531), and the flexible limiting strip (531) is provided with a positioning groove (532).
4. The protective device for an electricity metering box according to claim 3, characterized in that, The lock frame (530) is provided with a positioning part (533).
5. A protective device for an electricity metering box according to claim 4, characterized in that, The limiting seat (510) is provided with a spring groove (511).
6. A protective device for an electricity metering box according to claim 5, characterized in that, The handle (560) is provided with friction texture (561).
7. A protective device for an electricity metering box according to claim 6, characterized in that, The housing (100) is provided with a wire hole sealing sleeve (150); The wire hole sealing sleeve (150) is provided with an elastic flap (160).
8. A protective device for an electricity metering box according to claim 7, characterized in that, The bottom of the housing (100) is provided with a vent (170), and a filter screen (180) is detachably installed on the outside of the vent (170).
9. A protective device for an electricity metering box according to claim 8, characterized in that, The upper part of the box (100) is provided with a rainproof roof (190).