Metering box

Abstract

The utility model relates to the technical field of shells of electromechanical devices, in particular to a metering box. The metering box comprises a box body, an upper cover is arranged on the box body, a small door is assembled on the upper cover in a rotating mode, and a sealing ring used for achieving sealing between the small door and the upper cover after the small door is locked is arranged on the upper cover or the small door. An elastic piece is arranged between the small door and the upper cover, and the elastic piece is used for providing elastic force for the small door to rotate towards the direction of the upper cover so that the small door can be locked on the upper cover. The metering box provided by the utility model solves the problems that the locking and unlocking processes of the small door are time-consuming and labor-consuming and the labor intensity is high because the small door is locked through a threaded fastener in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of electromechanical device housing technology, and in particular to a metering box. Background Technology

[0002] An electricity meter box is a casing used to install electricity meters, providing a certain degree of isolation and protection for the meters. Meter boxes typically have a top cover that can be opened to reveal the entire casing, and a small door on the top cover that can also be opened and closed, allowing staff to easily inspect the interior of the meter box.

[0003] As disclosed in Chinese Utility Model Patent Document CN209927911U, a waterproof mechanism for a meter box door features a top cover on the meter box. A small door is rotatably mounted on the top cover via a pivot. A rib is provided on the side of the small door facing the top cover, and a corresponding groove is provided on the top cover. A sealing ring is installed within the groove. Therefore, when the small door is closed relative to the top cover, the rib is pressed into the groove and abuts against the sealing ring, thereby enhancing the meter box's sealing and waterproof / dustproof performance. Simultaneously, a square hole is provided on the small door, and a corresponding thin-plate lock lug is provided on the top cover. The lock lug passes through the square hole when the small door is closed relative to the top cover. A keyhole for attaching a padlock is also provided on the lock lug, allowing a padlock to be added to the lock lug after the small door is closed. This prevents unauthorized personnel from opening the small door, improving the meter box's security and anti-theft capabilities. The watch case is also equipped with a locking assembly, which includes a copper insert with a threaded hole on the top cover and a knob for threaded connection with the copper insert. A small hole is provided on the small door for the knob to pass through. After the small door is closed, the knob passes through the through hole of the small door and is threadedly connected to the threaded hole on the copper insert. As the knob is rotated, the knob cap at the top of the knob gradually presses against the small door, forcing the pressure rib on the inner side of the small door to press against the sealing ring on the top cover, thereby achieving a sealing effect and preventing the small door from automatically loosening due to the tension of the sealing ring.

[0004] In the aforementioned prior art, the small door achieves locking and sealing between the small door and the upper cover through a threaded connection between the knob and the copper insert on the upper cover. However, in actual use, the operator needs to manually turn the knob until it is securely fastened to the copper insert to ensure the pressure rib effectively compresses the sealing ring, thereby ensuring good sealing of the meter box. When it is necessary to open the small door, the operator needs to unscrew the knob to open the small door. This undoubtedly increases the labor intensity of the operators during the inspection and maintenance of multiple meter boxes, making it time-consuming and labor-intensive. Utility Model Content

[0005] The purpose of this utility model is to provide a metering box to solve the problem that the locking of the small door is achieved by using threaded fasteners in the prior art, which results in a time-consuming and labor-intensive process of locking and opening the small door.

[0006] To solve the above problems, the metering box of this utility model adopts the following technical solution:

[0007] A metering box includes a box body with a top cover. A small door is rotatably mounted on the top cover. A sealing ring is provided on the top cover or the small door to achieve a seal between the small door and the top cover after the small door is locked. An elastic element is provided between the small door and the top cover to provide an elastic force to the small door to rotate toward the top cover and lock the small door on the top cover.

[0008] Furthermore, two elastic elements are provided, located on adjacent sides of the hinged side between the small door and the upper cover.

[0009] Furthermore, the elastic element is a tension spring.

[0010] Furthermore, the top cover is provided with a tension spring fixing post, one end of the tension spring is connected to the tension spring fixing post, and a connecting ring is provided on the inner side of the small door, with the other end of the tension spring hooked onto the connecting ring.

[0011] Furthermore, the small door and / or the top cover are also provided with an auxiliary anti-detachment structure to prevent the small door from coming loose.

[0012] Furthermore, the side of the small door is provided with an anti-detachment hook, and the upper cover is provided with an anti-detachment groove that cooperates with the anti-detachment hook. The anti-detachment hook can engage with the anti-detachment groove to prevent the small door from loosening. The anti-detachment hook and the anti-detachment groove together constitute the auxiliary anti-detachment structure.

[0013] Furthermore, the top cover is provided with an observation window and a sink is provided around the outer edge of the observation window. A small door is installed in the sink, and the bottom of the sink is provided with a guide surface for guiding dust or fluid to flow to the outside of the box.

[0014] Furthermore, the bottom wall of the settling tank is an inclined surface that extends downward from the inside out, and this inclined surface constitutes the guide surface.

[0015] Furthermore, the middle part of the small door protrudes outward, forming a clearance space on the inner side of the small door to avoid the movement of the meter's circuit breaker inside the box.

[0016] Furthermore, the small door is a transparent small door.

[0017] This utility model's measuring box is an improved invention. The beneficial effects of this measuring box are as follows: The measuring box may be installed outdoors, and the small door can rotate to open or close relative to the top cover. Therefore, a certain level of airtightness is required to prevent external dust, rain, and snow from affecting and damaging the internal electronic components. Thus, after the small door is closed relative to the top cover, it is necessary to lock the small door and the top cover tightly. By setting an elastic element between the small door and the top cover, the elastic element provides an elastic force to the small door rotating towards the top cover, thereby locking the small door onto the top cover. When the small door is opened, the elastic element is stretched, producing elastic deformation. When the small door needs to be closed after inspection, the elastic element restores its elastic deformation, generating an elastic force that pulls the small door back towards the top cover with a certain pulling force, thereby achieving a sealed and locked connection between the small door and the top cover. In the above structure, the elastic element only needs to restore the elastic deformation to generate tension to automatically close the small door in place, thus locking the small door. This simplifies the process of locking the small door and the top cover for the staff. When the small door needs to be opened, it can be pulled outwards directly. Therefore, it can reduce the workload of the staff and save maintenance time. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the top cover and the small door provided by this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the top cover provided by this utility model;

[0020] Figure 3 This is a structural schematic diagram of the small door provided by this utility model;

[0021] Figure 4 This is a structural schematic diagram of the top cover provided in this embodiment from another perspective;

[0022] Figure 5 yes Figure 4 Enlarged view of section A in the middle;

[0023] Figure 6 This is a structural schematic diagram of the small door provided in this embodiment from another perspective.

[0024] In the diagram: 1. Metering box; 10. Box body; 20. Top cover; 21. Locking lug; 22. Observation window; 23. Settling trough; 231. Guide surface; 24. Anti-detachment groove; 25. Tension spring fixing post; 26. Groove; 30. Small door; 31. Square hole; 331. Anti-detachment hook; 34. Clearance space; 35. Connecting ring; 36. Pressure rib; 40. Sealing ring; 50. Elastic element. Detailed Implementation

[0025] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0026] An elastic element is installed between the small door and the top cover. When the small door is opened, the elastic element generates an elastic force due to elastic deformation. Therefore, when the small door is closed, it can provide an elastic force to rotate the small door towards the top cover, thus locking the small door onto the top cover. This achieves locking and self-locking between the small door and the top cover. While improving the sealing and safety of the metering box, it also eliminates the need for staff to perform a large amount of repetitive twisting of the knobs to achieve locking between the small door and the top cover, reducing the labor intensity of staff and saving inspection and maintenance time.

[0027] Based on the main concepts above, different embodiments are provided below for illustration.

[0028] An embodiment of the metering box of this utility model is as follows:

[0029] As a basic solution, such as Figure 1-3 As shown, the measuring box 1 includes a box body 10, a top cover 20 is provided on the box body 10, a small door 30 is rotatably mounted on the top cover 20, a pressure rib 36 is provided on the small door 30, a groove 26 is provided at the edge of the observation window 22 of the top cover 20, a sealing ring 40 is provided in the groove 26 for sealing between the small door 30 and the top cover 20 after the small door 30 is locked, and an elastic element 50 is provided between the small door 30 and the top cover 20 for providing elastic force to the small door 30 to rotate in the direction of the top cover 20, thereby locking the small door 30 on the top cover 20.

[0030] In this embodiment, the metering box 1 may be installed outdoors. The small door 30 can rotate to open or close relative to the upper cover 20, so the sealing performance of the metering box 1 is required to prevent external dust and rain / snow from affecting and damaging the internal electronic components. Therefore, after the small door 30 is closed relative to the upper cover 20, the small door 30 and the upper cover 20 need to be locked together. By setting an elastic element 50 between the small door 30 and the upper cover 20, the elastic element 50 provides an elastic force to the small door 30 to rotate towards the upper cover 20, thus locking the small door 30 onto the upper cover 20. Therefore, when the small door 30 is opened, the elastic element 50 is stretched and undergoes elastic deformation. When the inspection is completed and the small door 30 needs to be closed, the elastic force generated by the elastic element 50 restoring its elastic deformation pulls the small door 30 towards the upper cover 20 with a certain pulling force, thereby achieving a sealed and locked connection between the small door 30 and the upper cover 20. In the above structure, the elastic element 50 only needs to restore the elastic deformation to generate tension to automatically close the small door 30 in place, thereby locking the small door 30. This simplifies the process of locking the small door 30 and the top cover 20 for the staff. When it is necessary to open the small door 30, the small door 30 can be pulled outwards directly. Therefore, it can reduce the workload of the staff and save maintenance time.

[0031] In practical use, one scenario is that if the user forgets to close the small door 30, the elastic element 50 can automatically pull the small door 30 back and lock it, preventing the external environment from affecting the inside of the metering box 1. Another scenario is that after the user closes the small door 30, the elastic force of the elastic element 50 presses the small door 30 against the top cover 20 for self-locking, allowing the pressure rib 36 on the small door 30 to fit more tightly against the sealing ring 40 in the groove 26. Under the combined action of the pressure force of the pressure rib 36 and the pulling force of the elastic element 50, the small door 30 can maintain a relatively stable closed state after being closed relative to the top cover 20, preventing the small door 30 from loosening, thereby enhancing the sealing performance between the small door 30 and the top cover 20.

[0032] Preferably, the elastic element 50 is a tension spring. In addition to a tension spring, the elastic element 50 can also be an elastic band, an elastic coupling, or a leaf spring.

[0033] In another embodiment, the elastic element 50 is a torsion spring. The torsion spring is sleeved on the pivot of the small door 30 for rotating assembly with the upper cover 20. The two ends of the torsion spring abut against the small door 30 and the upper cover 20 respectively, so as to provide the small door 30 with an elastic force in the direction of rotation of the small door 30 toward the upper cover 20, and lock the small door 30 onto the upper cover 20.

[0034] In one embodiment, an elastic element 50 is provided. In this embodiment, in order to make the tension of the elastic element 50 on the entire small door 30 uniform, the elastic element 50 is usually connected to the center point of the small door 30.

[0035] In another embodiment, such as Figure 1 and Figure 3 As shown, two elastic elements 50 are provided, and both elastic elements 50 can be provided on the side of the small door 30 away from the pivot. Alternatively, they can be provided on the adjacent two sides of the side of the small door 30 used for hinge with the upper cover 20, which can ensure that the pulling force on the small door 30 is uniform and avoids obstructing the view of the staff.

[0036] Furthermore, such as Figure 4 and Figure 5 As shown, the small door 30 is provided with a connecting ring 35 for connecting one end of the elastic element 50, and the upper cover 20 is provided with a tension spring fixing post 25 for connecting the other end of the elastic element 50. One end of the elastic element 50 is bent into a hook for connecting with the connecting ring 35, and the connection with the connecting ring 35 is made by hooking, which is convenient and quick.

[0037] In this embodiment, only one connecting ring 35 and one corresponding tension spring fixing post 25 are required to connect one elastic element 50.

[0038] Preferably, connecting rings 35 are provided on both sides of the small door 30, and tension spring fixing posts 25 are provided on both sides of the observation window 22 of the upper cover 20 for connecting with the small door 30, so that two elastic elements 50 are provided between the small door 30 and the upper cover 20.

[0039] In addition to the above method, in another embodiment, a connecting hook for connecting the elastic member 50 can be provided on the inner side of the small door 30 and / or the top cover 20, and a ring structure or hook structure for connecting with the connecting hook can be provided at the end of the elastic member 50.

[0040] An observation window 22 is provided on the upper cover 20, and a recess 23 is provided around the outer edge of the observation window 22. The small door 30 is installed in the recess 23. This allows the edge of the small door 30 to be submerged in the recess 23, which can reduce the lateral gap between the door 30 and the upper cover 20 and further improve the sealing between the small door 30 and the upper cover 20.

[0041] refer to Figure 4 and Figure 5 As shown, furthermore, the side of the small door 30 is provided with an anti-detachment hook 331, and the wall of the sink 23 is provided with an anti-detachment groove 24 corresponding to and connected to the anti-detachment hook 331. The corresponding connection between the anti-detachment hook 331 and the anti-detachment groove 24 can further improve the stability of the connection between the small door 30 and the upper cover 20, prevent the small door 30 from automatically loosening and opening, and better limit and fix the small door 30.

[0042] In this embodiment, the anti-detachment hook 331 can be a hook-shaped buckle that engages with the anti-detachment groove 24 by squeezing and then restoring its deformation.

[0043] In another embodiment, the anti-detachment hook 331 is rotatable relative to the small door 30 and is connected to the small door 30 by a spring. When the small door 30 is closed, the anti-detachment hook 331 rotates due to pressure against the upper cover 20, and is then pressed into the anti-detachment groove 24. The elastic element 50 then pulls the anti-detachment hook 331 back to its initial position. During the opening process, it is also compressed and rotated, then pushed out of the anti-detachment groove 24, and finally returned to its initial position by the spring.

[0044] In addition to the above-mentioned auxiliary anti-detachment method of using anti-detachment hook 331 and anti-detachment groove 24, anti-detachment can also be achieved by setting a pin and plug, buckle and groove, or by setting magnetic parts on the small door 30 and the top cover 20 respectively.

[0045] In one embodiment, the side of the small door 30 is provided with a pivot for rotatable connection with the upper cover 20.

[0046] In a preferred embodiment, reference Figure 1 , Figure 2 and Figure 5The top of the small door 30 is rotatably connected to the top cover 20. In this embodiment, the small door 30 is rotatably connected to the top cover 20, which can prevent rain and snow from entering the interior of the box 10 to a certain extent. In rainy or snowy weather, the user opens the small door 30 through the rotatable connection between the top of the small door 30 and the top cover 20. On the one hand, because the small door 30 forms an angle with the box 10 after it is opened, it provides a shielding effect on the opening on the top cover 20 used to connect the small door 30, preventing rain and snow from falling directly into the box 10. On the other hand, rain and snow falling on the small door 30 will fall to the ground along the small door 30. This can prevent rain and snow from flowing into the box 10 at the edge of the opening on the top cover 20, thus reducing the possibility of rain and snow entering the box 10 to a certain extent.

[0047] Further, refer to Figure 1 and Figure 4 The bottom of the settling tank 23 has a guide surface 231, which is an inclined surface or an arc surface. In this embodiment, an inclined surface or arc surface for guiding flow is formed on the tank wall of the settling tank 23 near the bottom. The guide surface 231 guides the flow of rain and snow. In rainy or snowy weather, rain and snow can flow to the outside at a faster speed due to the guide surface 231, avoiding the accumulation of rain and snow on the box 10 for a long time, which would affect the electronic components inside the box 10 and enhance the safety of the metering box 1.

[0048] Preferably, the guide surface 231 is an inclined surface that extends from the inside out and downwards. The inclined surface structure facilitates the actual production of the upper cover 20 and can reduce the design and production cost of the metering box 1.

[0049] refer to Figure 2 and Figure 5 The small door 30 protrudes outward in the middle, forming a clearance space on its inner side. This clearance space is used to avoid the movement of the meter's circuit breaker. In actual use, the meter will inevitably trip. Therefore, to prevent the small door 30 from interfering with the movement trajectory of the circuit breaker during the tripping process, a protruding protrusion is provided on the small door 30 to form a clearance space 34 on its inner side. This clearance space is used to avoid the movement trajectory of the circuit breaker and prevent damage to the meter.

[0050] On the other hand, the outward-protruding structure can play a certain role in waterproofing. When rain and snow flow to the protruding structure, because the surface of the protruding structure protrudes outward and exceeds the surface of the box 10, some rain and snow will flow directly to the ground through the protruding structure, thus playing a role similar to the eaves in guiding the flow of rainwater.

[0051] In an optional embodiment of this utility model, the small door 30 is a transparent door made of a light-transmitting transparent material. In this embodiment, the transparent small door 30 allows the user to easily and intuitively observe the status of the internal electricity meter without opening the small door 30, thus reducing the user's workload. The small door 30 is preferably made of PC (polycarbonate) material.

[0052] Of course, in addition to the materials mentioned above, the small door 30 can also be made of glass, PMMA (acrylic) or other transparent plastic sheets.

[0053] refer to Figures 3 to 6 The pressure rib 36 is located on the inner edge of the small door 30, and the corresponding groove 26 and sealing ring 40 are located at the edge of the observation window 22 of the upper cover 20. In this embodiment, the pressure rib 36 is used to press and cooperate with the groove 26 and the sealing ring 40 in the groove 26 on the upper cover 20, so as to prevent rain and snow from entering the interior of the box 10 through the opening in the upper cover 20, and further enhance the sealing performance of the box 10.

[0054] In another embodiment, the pressure rib 36 is provided at the edge of the observation window 22 of the upper cover 20, and a groove 26 is provided on the inner edge of the small door, and a sealing ring 40 is provided in the groove 26.

[0055] In this embodiment, reference 5 and Figure 6 The upper cover 20 is provided with a lock nose 21, and the small door 30 is provided with a square hole 31 corresponding to the lock nose 21. The lock nose 21 is provided with a round hole. After the small door 30 is closed relative to the upper cover 20, the lock nose 21 can pass through the square hole 31 and be exposed. Then, a padlock is provided on the round hole, thereby improving the security of the meter box 1, preventing unauthorized personnel from opening the small door 30, and preventing the theft of electricity.

[0056] Further, refer to Figure 4 and Figure 5 The square hole 31 is set at the bottom of the small door 30, and correspondingly, the lock lug 21 is set at the bottom of the groove 23. Preferably, the lock lug 21 is set horizontally. In this embodiment, the square hole 31 is set at the bottom of the small door 30, so the lock lug 21 is set at the bottom of the groove 23, avoiding interference and obstruction of the worker's line of sight during the maintenance process.

[0057] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. A measuring box, comprising a box body, a top cover disposed on the box body, a small door rotatably mounted on the top cover, and a sealing ring provided on the top cover or the small door for sealing between the small door and the top cover after the small door is locked, characterized in that, An elastic element is provided between the small door and the top cover to provide an elastic force for the small door to rotate toward the top cover, thereby locking the small door onto the top cover.

2. The metering box according to claim 1, characterized in that, Two elastic elements are provided, located on adjacent sides of the hinged side between the small door and the upper cover.

3. The metering box according to claim 2, characterized in that, The elastic element is a tension spring.

4. The metering box according to claim 3, characterized in that, The top cover is equipped with a tension spring fixing post, one end of which is connected to the tension spring fixing post. The inner side of the small door is equipped with a connecting ring, and the other end of the tension spring is hooked onto the connecting ring.

5. The metering box according to any one of claims 1-4, characterized in that, The small door and / or the top cover are also equipped with an auxiliary anti-detachment structure to prevent the small door from coming loose.

6. The metering box according to claim 5, characterized in that, The small door is provided with an anti-detachment hook on its side, and the upper cover is provided with an anti-detachment groove that cooperates with the anti-detachment hook. The anti-detachment hook can be engaged with the anti-detachment groove to prevent the small door from loosening. The anti-detachment hook and the anti-detachment groove together constitute the auxiliary anti-detachment structure.

7. The metering box according to any one of claims 1-4, characterized in that, The top cover is provided with an observation window and a sink is provided around the outer edge of the observation window. A small door is installed in the sink. The bottom of the sink is provided with a guide surface for guiding dust or fluid to flow to the outside of the box.

8. The metering box according to claim 7, characterized in that, The bottom wall of the settling tank is an inclined surface that extends downward from the inside out, and this inclined surface constitutes the guide surface.

9. The metering box according to any one of claims 1-4, characterized in that, The small door protrudes outward in the middle, forming a clearance space on the inside of the small door to avoid the movement of the meter's circuit breaker inside the box.

10. The metering box according to any one of claims 1-4, characterized in that, The small door is a transparent door.

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