Outdoor meter box

Abstract

The utility model discloses an outdoor electric meter box, including box, door and hinge structure, the box is provided with chamber, the door swing setting through hinge structure is established on the box, be provided with electric meter box special lock between the box and the door, the box end wall is provided with a plurality of sealing grooves, and the adjacent sealing groove is communicated and sets up, the door inner wall is provided with the sealing pad in each sealing groove position, and the sealing pad is inserted and is set up with the corresponding sealing groove when the door cover is established on the box end wall, is provided with the sealing structure for the sealing joint between the door one side edge and the box end wall, be provided with the pre -tightening structure for the sealing pad between the box and the door to the sealing pad exert force to make the sealing pad and sealing groove inflation tight cooperation, and the pre -tightening structure is set up in the position away from hinge structure.

Description

Technical Field

[0001] This utility model relates to the field of meter box technology, specifically an outdoor meter box. Background Technology

[0002] Outdoor meter boxes, as key equipment in power systems used to house electronic components such as meters, transformers, and terminals, are widely used in outdoor settings such as residential communities, industrial parks, and municipal roads. Their core function is to provide a stable protective environment for the internal electronic components, ensuring the safety and reliability of power metering and transmission. With the intelligent upgrading of power systems, the operating environment of outdoor meter boxes is becoming increasingly complex. They must not only withstand the long-term corrosion of natural environments such as high and low temperatures, heavy rain, wind, sand, and snow, but also cope with interference from external factors such as humid air, dust, impurities, insects, and rodents. Therefore, extremely high requirements are placed on the sealing performance of the box. However, traditional outdoor meter boxes currently on the market still have significant structural design flaws, especially the unreasonable sealing structure between the box body and the door, which has become a key weakness affecting their protective performance. Firstly, most traditional outdoor meter boxes only achieve sealing through simple snap-fitting of the door and body, or by using only a single sealing strip at the seam, without optimization for the complex working conditions of the outdoor environment. On the one hand, the lack of a precise sealing fit between the box body and the door results in large gaps at the seams. In heavy rain, rainwater easily seeps into the box along these gaps, while humid air and dust also continuously intrude through these gaps, leading to long-term damage. Over time, this accumulation can lead to oxidation and corrosion of the metal contacts of internal electronic components, as well as a decline in the insulation performance of the circuits. This can cause problems such as metering errors and short-circuit faults, seriously affecting the stability of power supply. On the other hand, traditional meter boxes do not have effective pre-tightening and auxiliary sealing structures. During long-term use, the fit between the door and the box body will gradually decrease due to factors such as hinge wear, box deformation, and thermal expansion and contraction of materials caused by temperature changes. The gaps between the door and the box body will further widen, and the sealing performance will continue to decline. Moreover, the joints near the hinge are more prone to sealing failure due to uneven stress, which exacerbates the risk of intrusion of external impurities and water stains. In addition, the sealing structure design of traditional outdoor meter boxes lacks specificity and does not take into account the environmental differences in different outdoor areas (such as the waterproof requirements in rainy areas and the dust prevention requirements in dusty areas). The sealing solution is highly versatile but has limited protective effect, making it difficult to meet the requirements for long-term stable operation of meter boxes in different scenarios. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an outdoor meter box, which solves the problem that the large gap between the box body and the door of traditional outdoor meter boxes makes it easy for external impurities or water stains to enter the box body and cause corrosion to the electronic components inside the box.

[0004] To achieve the above objectives, this utility model provides an outdoor meter box, including a box body, a door, and a hinge structure. The box body has a cavity for housing external electronic components. The door is hinged and pivots on the box body to close or expose the cavity. A meter box-specific lock is provided between the box body and the door to lock the door. Several sealing grooves are provided on the end wall of the box body, and adjacent sealing grooves are connected. A sealing gasket is provided on the inner wall of the door corresponding to each sealing groove. When the door is placed on the end wall of the box body, the sealing gasket is inserted into the corresponding sealing groove. A sealing structure is provided on the door to seal the seam between one edge of the door and the end wall of the box body. The sealing structure is located near the hinge structure. A pre-tightening structure is provided between the box body and the door to apply force to the sealing gasket to make the sealing gasket and the sealing groove tighten together. The pre-tightening structure is located away from the hinge structure.

[0005] The advantages of adopting the above technical solution are as follows: the adjacent and connected sealing grooves in the above technology can form a continuous sealing area when the sealing gasket is inserted, avoiding local sealing breaks and improving the basic sealing integrity. The sealing gasket and the corresponding sealing groove can initially block external impurities and water stains from entering the box, providing basic protection for the electronic components in the chamber. The sealing structure close to the hinge structure can specifically solve the problem of joint sealing failure caused by uneven force on the hinge side, making up for the sealing shortcomings of the hinge side of traditional electric meter boxes. The pre-tightening structure away from the hinge structure can apply a stabilizing force to the sealing gasket, causing the sealing gasket and the sealing groove to expand and fit tightly, avoiding the expansion of the sealing gap due to the decrease in the fit of the box door during long-term use, effectively preventing the degradation of sealing performance. Overall, through the synergy of multiple structures, the problem of large joints in traditional electric meter boxes is solved, ensuring that the internal electronic components are protected from corrosion and maintaining the stability of power metering and transmission.

[0006] This utility model further includes the following: the sealing structure includes a retaining edge, which is disposed on the inner wall of the door and opened along the height direction of the door; a retaining groove is opened on the inner wall of the sealing groove near the hinge position along the height direction of the box body; a protrusion is provided on the inner wall of the retaining edge, the radial cross-section of the protrusion is trapezoidal; a groove is recessed in the inner wall of the retaining groove, the radial cross-section of the groove is trapezoidal; when the door cover is disposed on the end wall of the box body, the retaining edge and the retaining groove are inserted and the bottom wall of the retaining edge and the bottom wall of the retaining groove are in clearance fit to form a first groove; when the door cover is disposed on the end wall of the box body, the protrusion and the groove are inserted and the outer wall of the protrusion and the inner wall of the groove are in clearance fit to form a second groove; the first groove and the second groove are combined to form a labyrinth groove; when the door cover is disposed on the end wall of the box body, the inner wall of the door and the end wall of the box body are in abutting fit.

[0007] The advantages of adopting the above technical solution are as follows: the first groove formed by the interlocking of the flange and the groove, combined with the second groove formed by the interlocking of the protrusion and the groove, together form a labyrinth groove, which can extend the intrusion path of external impurities and water stains, greatly improving the sealing and blocking effect. The trapezoidal cross-section of the protrusion and the groove can improve the interlocking accuracy, avoid misalignment during assembly affecting the sealing performance, and enhance the structural fit. The gap fit between the bottom wall of the flange and the bottom wall of the groove, and between the outer wall of the protrusion and the inner wall of the groove, ensures the sealing effect while reserving reasonable space for the opening and closing of the door, avoiding structural jamming. The abutting fit between the inner wall of the door and the end wall of the box body can further reduce the joint gap, forming a double sealing guarantee, specifically solving the problem of sealing failure of the hinge side joint, and improving the overall protection capability.

[0008] This utility model further includes the following features: a mating gasket is provided in the sealing groove; when the door cover is placed on the end wall of the box body, the sealing gasket and the mating gasket are tightened together; both the sealing gasket and the mating gasket are made of elastic rubber; the sealing gasket has a plurality of sealing protrusions evenly distributed along its length; adjacent sealing protrusions are fitted together to form a sealing gap; the mating gasket has a plurality of mating protrusions evenly distributed along its length; adjacent mating protrusions are fitted together to form a mating gap; the plurality of sealing protrusions and the plurality of mating gaps are arranged in a one-to-one correspondence; the plurality of mating protrusions and the plurality of sealing gaps are arranged in a one-to-one correspondence; when the door cover is placed on the end wall of the box body, the sealing protrusions and the corresponding mating gaps are tightened together; when the door cover is placed on the end wall of the box body, the mating protrusions and the corresponding sealing gaps are tightened together; the plurality of sealing protrusions are arranged in a wavy pattern; the plurality of mating protrusions are arranged in a wavy pattern.

[0009] The advantages of adopting the above technical solution are: the elastic rubber sealing gasket and mating gasket in the above technology have good elastic deformation ability, which not only facilitates the insertion and mating operation when the door is closed, but also allows for a tight fit when tightened, enhancing the sealing effect. In addition, the wavy sealing protrusions and mating protrusions can increase the contact area between the two, improving the sealing reliability. The one-to-one correspondence between the sealing protrusions and the mating gap, and between the mating protrusions and the sealing gap, forms an interlaced sealing structure, effectively preventing external impurities and water stains from entering through the gaps. The sealing gaps formed by adjacent sealing protrusions and the mating gaps formed by adjacent mating protrusions can be further compressed during tightening, enhancing the sealing performance and avoiding the problem of insufficient sealing by traditional single sealing strips, thus providing a more stable protective environment for the electronic components inside the enclosure.

[0010] The present invention further includes the following: the pre-tightening structure includes several pre-tightening components, each group of pre-tightening components includes a base plate, a swing plate and a fixing plate. The base plate is disposed on the side wall of the box body and the fixing plate is perpendicularly connected to the base plate. The swing plate is hinged to the side wall of the box door and has a slot. When the box door is placed on the end wall of the box body, the swing plate swings to realize the insertion of the fixing plate and the slot.

[0011] The advantages of adopting the above technical solution are: the vertical connection structure between the base plate and the fixing plate in the above technology can ensure the installation stability of the fixing plate, provide reliable support for the transmission of pre-tightening force, and avoid the deformation of the fixing plate under force affecting the pre-tightening effect. The design of the swing plate hinged to the side wall of the box door makes the insertion and mating operation of the fixing plate and the slot more convenient. The pre-tightening structure assembly can be completed without complicated tools. The insertion and mating of the fixing plate and the slot can apply a directional force to the box door, causing the sealing gasket and the sealing groove to expand and tighten, improving the sealing performance. The setting of multiple sets of pre-tightening components can be flexibly adjusted according to the box size to adapt to different specifications of outdoor meter boxes, enhance the versatility of the structure, effectively solve the problem of the lack of pre-tightening in traditional meter boxes leading to the decay of sealing performance, and maintain long-term sealing stability.

[0012] The present invention further includes: the fixing plate has through holes, and a plurality of through holes are coaxially aligned; the pre-tightening structure also includes a locking shaft, which passes through a plurality of through holes and is threadedly connected to each through hole.

[0013] The advantages of adopting the above technical solution are as follows: the coaxially aligned perforations on the fixing plate ensure smooth insertion of the locking shaft, avoiding assembly difficulties caused by misalignment of the perforations and improving assembly efficiency. The threaded connection structure between the locking shaft and the perforations strengthens the connection between the fixing plate and the swing plate, preventing the fixing plate from dislodging from the slot due to vibration and other factors during long-term use, ensuring continuous and stable preload. Furthermore, the threaded connection allows for adjustment of the tightness by rotating the locking shaft, thereby adjusting the preload and adapting to gaskets with different elastic coefficients. This ensures that the gasket and sealing groove are always in the optimal tension state. The locking shaft also enhances the overall stability of the preload structure, preventing preload failure due to external interference and further protecting the internal electronic components of the enclosure from external impurities and water stains.

[0014] The present invention further comprises: a limiting groove is formed on the top wall of the substrate along the width direction of the box, and each tooth of the limiting groove is inclined; a mating groove is formed on the bottom wall of the swing plate along its swing direction, and each tooth of the mating groove is inclined; the inclination direction of the teeth of the limiting groove is opposite to the inclination direction of the teeth of the mating groove; and the limiting groove and the mating groove are partially engaged when the fixing plate passes through the slot.

[0015] The advantages of adopting the above technical solution are as follows: The tooth design with the limiting tooth groove and the mating tooth groove tilting in opposite directions can form a one-way locking effect when the fixing piece passes through the slot. This prevents the swing piece from being pulled in the opposite direction when it is subjected to external force, which would cause excessive stress on the fixing piece and avoid the appearance of seams between the door and the body. This ensures the reliability of the pre-tightening structure connection. At the same time, the structural feature of the tilted teeth makes the tooth groove meshing process smoother, avoiding jamming during assembly. It also enhances the biting force after meshing and improves the stability of pre-tightening force transmission. The partial meshing setting of the limiting tooth groove and the mating tooth groove, while ensuring the locking effect, also leaves room for the disassembly of the swing piece during subsequent maintenance. Adjustment can be made without completely separating the tooth groove. The tooth groove meshing further strengthens the connection between the fixing piece and the swing piece, ensuring that the pre-tightening force continues to act on the sealing gasket, maintaining the expansion and tightening fit between the sealing gasket and the sealing groove, and ensuring long-term sealing effect. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the present invention; Figure 2 This is a three-dimensional view of the box door in the open state of this utility model; Figure 3 This is a three-dimensional schematic diagram of the partially separated state of this utility model; Figure 4 This is a simplified cross-sectional view of the flange and its linkage components in the present invention in the state of engagement with the retaining groove; Figure 5 This is a partial three-dimensional schematic diagram of the sealing gasket in this utility model; Figure 6 for Figure 5 A schematic diagram of the separation state. Detailed Implementation

[0017] This utility model provides an outdoor electric meter box, including a box body 1, a door 2, and a hinge structure. The box body 1 has a cavity for housing external electronic components. The door 2 is hinged and pivots on the box body 1 to close or expose the cavity. A special lock for the electric meter box is provided between the box body 1 and the door 2. Several sealing grooves 11 are provided on the end wall of the box body 1, and adjacent sealing grooves 11 are connected. A sealing gasket 21 is provided on the inner wall of the door 2 corresponding to each sealing groove 11. When the door 2 is placed on the end wall of the box body 1, the sealing gasket 21 is inserted into the corresponding sealing groove 11. The door 2 is provided with a sealing structure for sealing the joint between one edge of the door 2 and the end wall of the box body 1. The structure is positioned near the hinge structure. A pre-tightening structure is provided between the housing 1 and the door 2 to apply force to the sealing gasket 21, causing the sealing gasket 21 to tighten and engage with the sealing groove 11. This pre-tightening structure is positioned away from the hinge structure. The sealing structure includes a retaining edge 22, which is located on the inner wall of the door 2 and extends along the height of the door 2. A retaining groove 12 is formed on the inner wall of the sealing groove 11 near the hinge position, extending along the height of the housing 1. A protrusion 221 is provided on the inner wall of the retaining edge 22, with a trapezoidal radial cross-section. A recess 121 is formed on the inner wall of the retaining groove 12, also with a trapezoidal radial cross-section. When the door 2 covers the end wall of the housing 1, the retaining edge 22 and the retaining groove 12... The first slot is formed by the insertion and gap fit between the bottom wall of the retaining edge 22 and the bottom wall of the retaining groove 12. When the door 2 is placed on the end wall of the box body 1, the protrusion 221 and the groove 121 are inserted and the outer wall of the protrusion 221 and the inner wall of the groove 121 are gap fitted to form a second slot. The first slot and the second slot are combined to form a labyrinth groove 23. When the door 2 is placed on the end wall of the box body 1, the inner wall of the door 2 and the end wall of the box body 1 are abutted and fitted. A mating gasket 3 is provided in the sealing groove 11. When the door 2 is placed on the end wall of the box body 1, the sealing gasket 21 and the mating gasket 3 are tightened and fitted. Both the sealing gasket 21 and the mating gasket 3 are made of elastic rubber. The sealing gasket 21 has a plurality of sealing protrusions 211 evenly distributed along its length. The sealing protrusions 211 are spaced apart from each other. The mating gasket 3 has a clearance fit and forms a sealing gap 212. A plurality of mating protrusions 31 are evenly distributed along its length. Adjacent mating protrusions 31 form a clearance fit and a mating gap 32. The plurality of sealing protrusions 211 and mating gaps 32 are arranged in a one-to-one correspondence. When the door 2 is placed on the end wall of the box body 1, the sealing protrusions 211 and their corresponding mating gaps 32 are tightened together. The plurality of sealing protrusions 211 and mating protrusions 31 are arranged in a wavy pattern. The pre-tightening structure includes a plurality of pre-tightening components.Each pretensioning component includes a base plate 4, a swing plate 5, and a fixing plate 41. The base plate 4 is disposed on the side wall of the housing 1, and the fixing plate 41 is perpendicularly connected to the base plate 4. The swing plate 5 is hinged to the side wall of the door 2, and a slot 51 is provided on the swing plate 5. When the door 2 is placed on the end wall of the housing 1, the swing plate 5 swings to realize the insertion of the fixing plate 41 into the slot 51. A through hole 42 is provided on the fixing plate 41, and several through holes 42 are coaxially aligned. The pretensioning structure also includes a locking shaft 43. 3. A plurality of through holes 42 are provided, and each through hole 42 is threadedly connected to it. A limiting groove 44 is formed on the top wall of the base plate 4 along the width direction of the housing 1, and each tooth of the limiting groove 44 is inclined. A mating groove 52 is formed on the bottom wall of the swinging piece 5 along its swing direction, and each tooth of the mating groove 52 is inclined. The inclination direction of the teeth of the limiting groove 44 is opposite to the inclination direction of the teeth of the mating groove 52. When the fixing piece 41 passes through the slot 51, the limiting groove 44 and the mating groove 52 are partially engaged.

[0018] Specific Implementation Example 1: Overall Operation Process of Outdoor Electricity Meter Box: 1. Initial opening and component installation stage: In the initial state, the door of the outdoor meter box is locked to the box body by the meter box special lock, and the sealing structure and pre-tightening structure are inactive. When electronic components need to be installed, first unlock the meter box special lock, swing the door outward through the hinge structure to fully expose the box chamber. Place the external electronic components (such as meters, transformers, etc.) in the box chamber in a standardized manner, complete the component wiring and fixation, and then proceed to the door sealing and closing process.

[0019] 2. Initial sealing and closing stage of the cabinet door: When closing the cabinet door, the door swings towards the cabinet body with the hinge structure as the axis, and at the same time, the sealing gasket on the inner wall of the cabinet door aligns with the sealing groove on the end wall of the cabinet body. As the cabinet door continues to swing, the sealing gasket is gradually inserted into the corresponding sealing groove to achieve initial insertion and sealing. At the same time, the retaining edge of the inner wall of the cabinet door near the hinge position is inserted into the retaining groove of the end wall of the cabinet body. The trapezoidal protrusion of the inner wall of the retaining edge is inserted into the trapezoidal groove of the inner wall of the retaining groove. At this time, the bottom wall of the retaining edge and the bottom wall of the retaining groove form the first groove, and the outer wall of the protrusion and the inner wall of the groove form the second groove. The two combine to form a labyrinth groove, and the inner wall of the cabinet door abuts against the end wall of the cabinet body, completing the initial sealing of the hinge side joint.

[0020] 3. Pre-tightening structure activation and sealing reinforcement stage: After the door is initially closed, operate the pre-tightening component away from the hinge structure: First, swing the swing plate hinged to the side wall of the door, so that the fixing plate on the side wall base plate of the box body is inserted into the slot of the swing plate. During the process, the limiting tooth groove on the top wall of the base plate and the mating tooth groove (reverse inclined teeth) on the bottom wall of the swing plate gradually engage locally to form a one-way lock to prevent the swing plate from rebounding; then, pass the locking shaft through the coaxial through hole on the fixing plate and tighten the locking shaft through the threaded connection to further strengthen the connection between the fixing plate and the swing plate; the pre-tightening structure applies a directional force to the door through the above operation, causing the sealing gasket to be squeezed into the sealing groove. The mating gasket (both of the sealing gasket and the sealing gasket are made of elastic rubber) in the sealing groove deforms synchronously with the sealing gasket as it is squeezed. The wavy sealing protrusion of the sealing gasket is embedded in the mating gap of the mating gasket, and the wavy mating protrusion of the mating gasket is embedded in the sealing gap of the sealing gasket, realizing the expansion and tightening fit between the sealing gasket and the mating gasket. Finally, the sealing gasket and the sealing groove are completely expanded and tightened, eliminating the joint gap.

[0021] 4. Daily Operation and Maintenance Phase: During daily use, the locking shaft and limiting tooth groove of the pre-tightening structure continuously maintain the pre-tightening force to prevent the door from becoming less fitted due to hinge wear, thermal expansion and contraction, etc., ensuring that the sealing gasket and sealing groove, the edge and the groove, and other sealing structures always maintain a stable sealing state, preventing external impurities and water stains from entering. When internal components need maintenance, first unscrew the locking shaft, swing the swing plate in the opposite direction to disengage the limiting tooth groove from the mating tooth groove and remove the fixing plate from the slot. After unlocking the pre-tightening structure, unlock the meter box special lock and open the door through the hinge for maintenance. After maintenance, repeat the process of "initial sealing and closing of the door and activation and sealing enhancement of the pre-tightening structure" to restore the meter box to a sealed operating state.

[0022] The hinge structure mentioned above is existing technology, used to achieve a locking connection between the door and the box body. Since it is existing technology, its structure and function will not be described in detail.

[0023] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. An outdoor meter box, comprising a box body, a door, and a hinge structure, wherein the box body has a cavity for housing external electronic components, the door is pivotally mounted on the box body via the hinge structure to close or expose the cavity, and a special lock for the meter box is provided between the box body and the door for locking the door, characterized in that: The end wall of the enclosure is provided with several sealing grooves, and adjacent sealing grooves are connected. A sealing gasket is provided on the inner wall of the door corresponding to each sealing groove. When the door is placed on the end wall of the enclosure, the sealing gasket is inserted into the corresponding sealing groove. The door is provided with a sealing structure for sealing the joint between one edge of the door and the end wall of the enclosure. The sealing structure is located near the hinge structure. A pre-tightening structure is provided between the enclosure and the door for applying force to the sealing gasket to make the sealing gasket and the sealing groove expand and tighten together. The pre-tightening structure is located away from the hinge structure.

2. An outdoor meter box according to claim 1, characterized in that: The sealing structure includes a retaining edge, which is disposed on the inner wall of the door and opened along the height direction of the door. A retaining groove is provided on the inner wall of the sealing groove near the hinge position along the height direction of the box body. A protrusion is provided on the inner wall of the retaining edge, and the radial cross-section of the protrusion is trapezoidal. The inner wall of the retaining groove is recessed to eliminate a groove, and the radial cross-section of the groove is trapezoidal. When the door cover is disposed on the end wall of the box body, the retaining edge and the retaining groove are inserted and the bottom wall of the retaining edge and the bottom wall of the retaining groove are in clearance fit to form a first groove. When the door cover is disposed on the end wall of the box body, the protrusion and the groove are inserted and the outer wall of the protrusion and the inner wall of the groove are in clearance fit to form a second groove. The first groove and the second groove are combined to form a labyrinth groove. When the door cover is disposed on the end wall of the box body, the inner wall of the door and the end wall of the box body are in abutting fit.

3. An outdoor meter box according to claim 1, characterized in that: A mating gasket is provided in the sealing groove. When the door cover is placed on the end wall of the box body, the sealing gasket and the mating gasket are tightened together. Both the sealing gasket and the mating gasket are made of elastic rubber. The sealing gasket has a plurality of sealing protrusions evenly distributed along its length. Adjacent sealing protrusions are fitted with a gap to form a sealing gap. The mating gasket has a plurality of mating protrusions evenly distributed along its length. Adjacent mating protrusions are fitted with a gap to form a mating gap. The plurality of sealing protrusions and the plurality of mating gaps are arranged in a one-to-one correspondence. When the door cover is placed on the end wall of the box body, the sealing protrusions and the corresponding mating gaps are tightened together. When the door cover is placed on the end wall of the box body, the mating protrusions and the corresponding sealing gaps are tightened together. The plurality of sealing protrusions are arranged in a wavy shape. The plurality of mating protrusions are arranged in a wavy shape.

4. An outdoor meter box according to claim 1, characterized in that: The pre-tightening structure includes several pre-tightening components. Each set of pre-tightening components includes a base plate, a swing plate, and a fixing plate. The base plate is disposed on the side wall of the box and the fixing plate is perpendicularly connected to the base plate. The swing plate is hinged to the side wall of the box door and has a slot. When the box door is placed on the end wall of the box, the swing plate swings to realize the insertion of the fixing plate and the slot.

5. An outdoor meter box according to claim 4, characterized in that: The fixing plate has through holes, and several through holes are coaxially aligned. The pre-tightening structure also includes a locking shaft, which passes through several through holes and is threadedly connected to each through hole.

6. An outdoor meter box according to claim 4, characterized in that: The top wall of the substrate is provided with a limiting groove along the width direction of the box, and each tooth of the limiting groove is inclined. The bottom wall of the swing plate is provided with a mating groove along its swing direction, and each tooth of the mating groove is inclined. The inclination direction of the teeth of the limiting groove is opposite to the inclination direction of the teeth of the mating groove. When the fixing plate passes through the slot, the limiting groove and the mating groove are partially engaged.

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