Electricity meter box and electricity meter box assembly

Abstract

This invention discloses an electric meter box and an electric meter box assembly. The electric meter box includes a box bottom and a box cover. A mounting base is installed outside the receiving cavity on the box bottom. The mounting base has a mounting portion with a vertically penetrating mounting hole. The inner side of the box cover has two vertically spaced limiting portions, each with a vertically penetrating first insertion hole. The space between the two limiting portions is used to accommodate the mounting portion. The electric meter box also includes a pin, which includes a limiting shaft passing vertically through the mounting hole and the first insertion hole, and an elastic hook connected to the upper end of the limiting shaft. The limiting shaft allows the box cover to rotate circumferentially around it, and the elastic hook engages with a portion of the box cover circumferentially. When installing the box cover, aligning the position between the two limiting portions of the box cover with the mounting portion facilitates positioning. After inserting the limiting shaft of the pin into the first insertion hole of the two limiting portions and the mounting hole of the mounting portion, the elastic hook engages with a portion of the box cover. This results in high installation efficiency, a reasonable and practical structure, and ease of manufacturing.

Description

Technical Field

[0001] This invention relates to the field of meter box technology, and more specifically to an electric meter box and an electric meter box assembly. Background Technology

[0002] A meter box is a device used to store electricity meters. According to electrical wiring requirements, switching equipment, measuring instruments, protective electrical appliances, and auxiliary equipment are assembled inside the meter box, and the market often has requirements for the protection level of the meter box.

[0003] Electricity meter boxes generally consist of a bottom and a cover. The bottom has a forward-opening receiving cavity; the cover is rotatably mounted on the bottom and is used to open or close the opening of the receiving cavity. Current electricity meter boxes have the following problems:

[0004] First, currently, the bottom and lid of the box are usually connected by hinges. One side of the hinge is fixed to the lid with screws, and the other side of the hinge is fixed to the bottom of the box with screws. When installing the lid, it is inconvenient to position it and it is not easy to align it with the screw holes of the hinge. In addition, there are many screw holes, which leads to low installation efficiency.

[0005] Secondly, the hinge area is prone to water leakage, which affects the protection level of the meter box;

[0006] Third, conventional ventilation holes have poor waterproofing performance, and the components inside the meter box are prone to short circuits and burnout due to water ingress at the site. Sealing the ventilation holes with glue can solve the waterproofing problem, but it is not conducive to ventilation and heat dissipation. Summary of the Invention

[0007] The first technical problem to be solved by the present invention is to provide an electric meter box with higher installation efficiency in view of the current state of the prior art.

[0008] The second technical problem to be solved by the present invention is to provide an electric meter box with a high level of protection.

[0009] The third technical problem to be solved by the present invention is to provide an electric meter box that takes into account both waterproofing and ventilation requirements.

[0010] The fourth technical problem to be solved by the present invention is to provide an electric meter box assembly.

[0011] The technical solution adopted by the present invention to solve the first technical problem mentioned above is: an electric meter box, characterized in that: it includes...

[0012] The bottom of the box has a front-opening cavity for receiving contents;

[0013] The lid is rotatably mounted on the bottom of the box and is used to open or close the opening of the containing cavity;

[0014] Its features are:

[0015] The bottom of the box is equipped with a mounting base outside the receiving cavity. The mounting base has a mounting part with a through mounting hole.

[0016] The inner side of the box cover has two limiting parts that are spaced apart vertically, and each limiting part has a first insertion hole that passes through vertically. The space between the two limiting parts is used to accommodate the mounting part.

[0017] The meter box also includes a latch, which includes a limiting shaft passing through the mounting hole and the first insertion hole, and an elastic hook connected to the upper end of the limiting shaft. The limiting shaft allows the box cover to rotate around it, and the elastic hook engages with the box cover in a partially circumferentially movable manner.

[0018] To facilitate the engagement of the flexible hook, the inner side of the lid also has a locking part located above the two limiting parts. This locking part has a second through hole extending vertically, and the limiting shaft passes through the second through hole. The lower end face of the locking part is a horizontally extending plane, and the lower end of the flexible hook engages circumferentially with the locking part. By providing the locking part, the engagement of the flexible hook is facilitated, without affecting the rotation of the lid.

[0019] To further address the second technical problem of this application, preferably, the bottom of the tank has a water guide located outside the left and / or right side of the receiving cavity, the water guide having a cavity that opens forward, and the cavity wall on the side of the cavity near the receiving cavity is referred to as the first cavity wall;

[0020] The inner wall of the box cover has a groove that is recessed forward and allows the front end of the first cavity wall to be inserted;

[0021] The water guiding part is provided with a sealing element that fits against the inner wall of the first cavity wall, and the front end face of the sealing element abuts against the front end face of the outer groove wall where the groove is located.

[0022] The mounting base is located inside the cavity.

[0023] By incorporating sealing elements, the lid and bottom of the tank are sealed together to prevent water from entering the bottom and improve the protection level.

[0024] To prevent water from entering the bottom of the tank, the front end of the seal has a water-retaining flange extending in the left-right direction. The front face of this water-retaining flange abuts against the end face of the outer wall of the groove. By providing the water-retaining flange, water is effectively blocked, preventing water from entering the bottom of the tank and improving the protection level.

[0025] To further solve the third technical problem of this application, preferably, at least two drainage parts are arranged sequentially in the vertical direction on the left and / or right outer walls of the bottom of the box. In the direction of water flow, the upper end of the downstream drainage part is located inside the upstream drainage part in the left and right direction. A ventilation hole communicating with the receiving cavity is provided between the upstream and downstream drainage parts.

[0026] The drainage section is located behind the water guide section.

[0027] By incorporating ventilation holes, air can be easily ventilated. At the same time, the water flows downwards due to gravity and will not cross the ventilation holes laterally and enter the bottom of the tank. This approach can simultaneously meet the needs of waterproofing and ventilation.

[0028] To further facilitate waterproofing, the bottom of the tank is also equipped with a ventilation cover on the corresponding side wall, which is fitted over all the drainage sections. This ventilation cover has air inlets extending in the left and right directions and communicating with the outside and the ventilation holes respectively. By setting up the ventilation cover, water flow is blocked, thus preventing water from entering the bottom of the tank through the ventilation holes, while also facilitating ventilation and heat dissipation.

[0029] Preferably, the meter box further includes

[0030] The switch mounting plate is installed inside the receiving cavity;

[0031] A partition is mounted on the switch mounting plate; the partition includes...

[0032] Extension, extending in the front-to-back direction;

[0033] The bending portion is connected to the rear end of the extension portion near the upper end. The bending portion extends in the left-right direction and has a through hole that runs through the front and back.

[0034] The switch mounting plate has a recessed slot in the middle, a mounting cavity communicating with the slot, and a through hole communicating with the mounting cavity and the through hole respectively. The slot is used to accommodate the extension and the mounting cavity is used to accommodate the bend.

[0035] The bolt passes through the through hole in the front-back direction, and is threaded to the bottom of the box after passing through the hole, so that the bent part presses the switch mounting plate against the bottom of the box.

[0036] In this way, on the one hand, the partition divides the switch mounting plate into two areas, which isolates the circuit breakers on the left and right sides; on the other hand, the partition reinforces the switch mounting plate, which is conducive to a stable connection between the switch mounting plate and the bottom of the box.

[0037] To facilitate the positioning of the partition, the partition also includes

[0038] The positioning part is connected to the bending part and extends in the front-to-back direction. The positioning part is inserted into the through hole of the switch mounting plate.

[0039] To limit the movement of the partition, the extension of the partition has a forward-recessed limiting groove, and the upper and lower ends of the limiting groove are limiting protrusions for limiting the vertical movement of the switch mounting plate. By setting the limiting groove, on the one hand, the limiting protrusions are formed, which limit the vertical movement of the switch mounting plate, and on the other hand, it is convenient to insert with the switch mounting plate.

[0040] The technical solution adopted by the present invention to solve the above-mentioned fourth technical problem is: an electric meter box assembly, characterized in that: it includes the electric meter box as described above;

[0041] The meter box assembly also includes

[0042] The first circuit breaker is mounted on the switch mounting plate and is located on the left side of the partition.

[0043] The second circuit breaker is mounted on the switch mounting plate and located on the right side of the partition.

[0044] Compared with the prior art, the advantages of the present invention are as follows: when installing the box cover, the position between the two limiting parts of the box cover is aligned with the mounting part for easy positioning. After inserting the limiting shaft of the pin into the first insertion hole of the two limiting parts and the mounting hole of the mounting part, the elastic hook is partially engaged with the box cover, resulting in high installation efficiency. The structure is reasonable and practical, and it is also easy to manufacture. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of Embodiment 1 of the present invention;

[0046] Figure 2 This is a schematic diagram of another state of Embodiment 1 of the present invention (the lid is in the open state).

[0047] Figure 3 for Figure 2 A magnified schematic diagram of part A in the middle;

[0048] Figure 4 for Figure 2 Exploded view;

[0049] Figure 5 for Figure 4 A magnified schematic diagram of part B in the middle;

[0050] Figure 6 for Figure 1 Exploded view (with some parts removed);

[0051] Figure 7 for Figure 6 A magnified schematic diagram of part C in the middle;

[0052] Figure 8 This is a cross-sectional view of Embodiment 1 of the present invention;

[0053] Figure 9 for Figure 8 A magnified schematic diagram of part D in the middle;

[0054] Figure 10 This is a cross-sectional view of another location in Embodiment 1 of the present invention;

[0055] Figure 11 for Figure 10 A magnified schematic diagram of part E in the middle;

[0056] Figure 12 This is a schematic diagram of the partition in Embodiment 1 of the present invention;

[0057] Figure 13 This is a schematic diagram of the partition at another angle in Embodiment 1 of the present invention;

[0058] Figure 14 This is a schematic diagram of the sealing element in Embodiment 1 of the present invention;

[0059] Figure 15 This is a schematic diagram of the pin in Embodiment 1 of the present invention;

[0060] Figure 16 This is a schematic diagram of another angle of Embodiment 1 of the present invention (with the lid removed).

[0061] Figure 17 for Figure 16 Exploded view;

[0062] Figure 18 This is an assembly diagram of the switch mounting plate, partition, first circuit breaker, and second circuit breaker in Embodiment 1 of the present invention;

[0063] Figure 19 for Figure 18 A magnified schematic diagram of a local part of F;

[0064] Figure 20 This is a schematic diagram of Embodiment 2 of the present invention (with the lid removed).

[0065] Figure 21 This is a schematic diagram of Embodiment 3 of the present invention (with the lid removed).

[0066] Figure 22 This is a schematic diagram of Embodiment 4 of the present invention (with the lid removed). Detailed Implementation

[0067] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Example 1

[0068] See Figures 1-19This is a preferred embodiment of the meter box assembly of the present invention. The meter box assembly includes a meter box, a first circuit breaker 300, and a second circuit breaker 400. The meter box includes a box bottom 1, a box cover 2, a mounting base 3, a pin 4, a sealing element 5, a switch mounting plate 100, a partition 200, bolts, and other main components.

[0069] The tank bottom 1 has a forward-opening receiving cavity 11; the tank bottom 1 has water guiding portions 12 located outside the left and right sides of the receiving cavity 11, the water guiding portions 12 having a forward-opening cavity 121, the cavity wall of the cavity 121 near the receiving cavity 11 is referred to as the first cavity wall 121a. In other embodiments, the water guiding portions 12 may also be provided only on the left or right side of the receiving cavity 11.

[0070] The lid 2 is rotatably mounted on the bottom 1 of the box and is used to open or close the opening of the receiving cavity 11; the inner wall of the lid 2 has a groove 23 that is recessed forward and allows the front end of the first cavity wall 121a to be inserted; the inner side of the lid 2 has two limiting parts 21 that are spaced apart vertically, each limiting part 21 having a first insertion hole 21a that passes through vertically, and the space between the two limiting parts 21 is used to accommodate the mounting part 31; the inner side of the lid 2 also has a snap-fit ​​part 22 located above the two limiting parts 21, the snap-fit ​​part 22 having a second insertion hole 22a that passes through vertically, and the lower end face of the snap-fit ​​part 22 being a horizontally extending plane.

[0071] The mounting base 3 is installed on the bottom of the box 1 and located outside the receiving cavity 11. The mounting base 3 has a mounting part 31 with a mounting hole 311 that runs vertically through it. The mounting base 3 is located inside the cavity 121.

[0072] The pin 4 includes a limiting shaft 41 that passes through the mounting hole 311, the first insertion hole 21a, and the second insertion hole 22a, and an elastic hook 42 connected to the upper end of the limiting shaft 41. The limiting shaft 41 allows the box cover 2 to rotate around it. The elastic hook 42 is partially engaged with the box cover 2 in a circumferential manner. Specifically, the lower end of the elastic hook 42 is engaged with the engaging part 22 in a circumferential manner.

[0073] A sealing element 5 is disposed within the water guiding section 12 and fits against the inner wall of the first cavity wall 121a. The front end face of the sealing element 5 abuts against the end face of the outer groove wall 23a where the groove 23 is located. The front end of the sealing element 5 has a water-blocking flange 51 extending in the left-right direction, and the front end face of the water-blocking flange 51 abuts against the end face of the outer groove wall 23a where the groove 23 is located. Drainage sections 10 are arranged sequentially in the up-down direction on the left and right outer walls of the bottom of the tank 1. In the direction of water flow, the upper end of the downstream drainage section 10 is located inside the upstream drainage section 10 in the left-right direction. A ventilation hole 10a communicating with the receiving cavity 11 is provided between the upstream and downstream drainage sections 10. The drainage section 10 is located behind the water guiding section 12. The number of drainage sections 10 can be adjusted as needed, with at least two, and drainage sections 10 can also be provided only on the left or only on the right.

[0074] The bottom of the box 1 is also provided with a ventilation hood 20 on the corresponding side wall, which is fitted outside all the drainage parts 10. The ventilation hood 20 has an air inlet 20a that extends in the left and right directions and is connected to the outside and the ventilation hole 10a respectively.

[0075] The switch mounting plate 100 is disposed within the receiving cavity 11. The switch mounting plate 100 has a rearwardly recessed slot 101 in the middle, a mounting cavity 102 communicating with the slot 101, and a through hole 102a communicating with the mounting cavity 102 and the through hole 202a respectively. The slot 101 is used to receive the extension 201, and the mounting cavity 102 is used to receive the bent part 202.

[0076] A partition 200 is disposed on a switch mounting plate 100. The partition 200 includes an extension 201, a bending portion 202, and a positioning portion 203. The extension 201 extends in the front-rear direction and has a forward-recessed limiting groove 201a. The upper and lower ends of the limiting groove 201a are limiting protrusions 201b for limiting the upper and lower positions of the switch mounting plate 100. The bending portion 202 is connected to the rear end of the extension 201 near its upper end. The bending portion 202 extends in the left-right direction and has a through hole 202a extending through the front and rear. The positioning portion 203 is connected to the bending portion 202 and extends in the front-rear direction. The positioning portion 203 is inserted into the through hole 102a of the switch mounting plate 100.

[0077] The bolt passes through the through hole 102a and through hole 202a in the front-back direction and is threaded to the bottom of the box 1, and the bent part 202 presses the switch mounting plate 100 against the bottom of the box 1.

[0078] The meter box assembly includes a meter box; a partition 200 divides the switch mounting plate 100 into a left mounting plate and a right mounting plate; a first circuit breaker 300 is disposed on the switch mounting plate 100 and located on the left side of the partition 200, that is, the first circuit breaker 300 is disposed on the left mounting plate 103; a second circuit breaker 400 is disposed on the switch mounting plate 100 and located on the right side of the partition 200, that is, the second circuit breaker 400 is disposed on the right mounting plate 104.

[0079] The working principle and usage instructions are as follows.

[0080] Align the position between the two limiting parts 21 of the cover 2 with the mounting part 31 of the mounting base 3 for easy positioning. Then insert the limiting shaft 41 of the pin 4 into the first insertion hole 21a of the limiting part 21 and the second insertion hole 22a of the snap-fit ​​part 22. Then snap the elastic hook 42 into the snap-fit ​​part 22. Assembly is convenient and quick. When disassembling, simply remove the pin 4. Disassembly is also convenient and quick.

[0081] By setting up a ventilation hood 20 and an air inlet 20a, ventilation and heat dissipation are facilitated. By setting up a drainage section 10, water can flow downwards and will not pass through the air inlet 20a and enter the bottom of the box 1. This can simultaneously meet the needs of waterproofing and ventilation.

[0082] By setting up the water guide section 12 and the sealing element 5, even if a small amount of water enters the water guide section 12, it will not pass through the sealing element 5 and enter the receiving cavity 11 at the bottom of the box, thus the meter box has a high protection level.

[0083] The partition 200 separates the first circuit breaker 300 and the second circuit breaker 400 to meet safety distance requirements. The first circuit breaker 300 is a molded case circuit breaker used for incoming lines, and the second circuit breaker 400 is a molded case circuit breaker used for outgoing lines. Furthermore, the bend 202 of the partition 200 facilitates a secure connection between the switch mounting plate 100 and the box bottom 1. Moreover, this partition 200 of this embodiment is suitable for various circuit breaker (switch) installation situations of different specifications. For example, the partition 200 is suitable for installation situations such as... Figures 1-19 In addition to the switch installation shown, it also applies to situations such as... Figures 20-22 The switch installation shown indicates that the partition 200 has high compatibility. Example 2

[0084] See Figure 20 This is another embodiment of the meter box assembly of the present invention. The difference between this embodiment and Embodiment 1 is that the first circuit breaker 300 and the second circuit breaker 400 have different structures and installation methods. The first circuit breaker 300 is a miniature circuit breaker used for incoming lines, and the second circuit breaker 400 is a miniature circuit breaker used for outgoing lines. Example 3

[0085] See Figure 21This is another embodiment of the meter box assembly of the present invention. The difference between this embodiment and Embodiment 1 is that the shape of the switch mounting plate 100 is different, and the structures and installation methods of the first circuit breaker 300 and the second circuit breaker 400 are different. The first circuit breaker 300 is a miniature circuit breaker used for incoming lines, and the second circuit breaker 400 is a molded case circuit breaker used for outgoing lines. Example 4

[0086] See Figure 22 This is another embodiment of the meter box assembly of the present invention. The difference between this embodiment and Embodiment 1 is that the shape of the switch mounting plate 100 is different, and the structures and installation methods of the first circuit breaker 300 and the second circuit breaker 400 are different. The first circuit breaker 300 is a molded case circuit breaker used for incoming lines, and the second circuit breaker 400 is a miniature circuit breaker used for outgoing lines.

Claims

1. An electric meter box, characterized in that: Including The bottom of the box (1) has a front-opening receiving cavity (11); A lid (2) is rotatably mounted on the bottom (1) of the box and is used to open or close the opening of the receiving cavity (11); Its features are: The bottom of the box (1) is equipped with a mounting base (3) outside the receiving cavity (11). The mounting base (3) has a mounting part (31) with a mounting hole (311) that runs vertically through the box. The inner side of the box cover (2) has two limiting parts (21) spaced apart vertically, each limiting part (21) has a first insertion hole (21a) that passes through vertically, and the two limiting parts (21) are used to accommodate the mounting part (31); The meter box also includes a latch (4), which includes a limiting shaft (41) that passes through the mounting hole (311) and the first insertion hole (21a) and an elastic hook (42) connected to the upper end of the limiting shaft (41). The limiting shaft (41) allows the box cover (2) to rotate around it, and the elastic hook (42) engages with the box cover (2) in a partially circumferentially movable manner. The meter box also includes A switch mounting plate (100) is disposed within a receiving cavity (11); A partition (200) is provided on the switch mounting plate (100); The partition (200) includes The extension (201) extends in the front-to-back direction; The bent portion (202) is connected to the rear end of the extension portion (201) near the upper end. The bent portion (202) extends in the left-right direction and has a through hole (202a) that runs through the front and back. The switch mounting plate (100) has a recessed slot (101) in the middle, a mounting cavity (102) communicating with the slot (101), and a through hole (102a) communicating with the mounting cavity (102) and the through hole (202a). The slot (101) is used to accommodate the extension (201), and the mounting cavity (102) is used to accommodate the bent part (202). The bolt passes through the through hole (102a) and through hole (202a) in the front-back direction and is threaded to the bottom of the box (1), and the bent part (202) presses the switch mounting plate (100) against the bottom of the box (1); The partition (200) also includes The positioning part (203) is connected to the bending part (202) and extends in the front-rear direction. The positioning part (203) is inserted into the through hole (102a) of the switch mounting plate (100). The extension (201) of the partition (200) has a forward-recessed limiting groove (201a), and the upper and lower ends of the limiting groove (201a) are limiting protrusions (201b) for limiting the upper and lower positions of the switch mounting plate (100).

2. The meter box according to claim 1, characterized in that: The inner side of the box cover (2) also has a snap-fit ​​part (22) located above the two limiting parts (21). The snap-fit ​​part (22) has a second insertion hole (22a) that runs vertically through it. The limiting shaft (41) passes through the second insertion hole (22a). The lower end face of the snap-fit ​​part (22) is a horizontally extending plane. The lower end of the elastic hook (42) is circumferentially snapped into the snap-fit ​​part (22).

3. The meter box according to claim 1, characterized in that: The bottom of the tank (1) has a water guide (12) located outside the left and / or right side of the receiving cavity (11), the water guide (12) having a cavity (121) open to the front, the cavity wall (121) on the side of the cavity (11) near the receiving cavity (11) is referred to as the first cavity wall (121a). The inner wall of the box cover (2) has a groove (23) that is recessed forward and allows the front end of the first cavity wall (121a) to be inserted; The water guide part (12) is provided with a sealing element (5) that fits against the inner wall of the first cavity wall (121a). The front end face of the sealing element (5) abuts against the end face of the outer groove wall (23a) where the groove (23) is located. The mounting base (3) is located inside the cavity (121).

4. The meter box according to claim 3, characterized in that: The front end of the seal (5) has a water-blocking flange (51) extending in the left-right direction, and the front end face of the water-blocking flange (51) abuts against the end face of the outer groove wall (23a) where the groove (23) is located.

5. The meter box according to claim 3, characterized in that: At least two drainage sections (10) are arranged sequentially in the vertical direction on the left and / or right outer walls of the bottom of the box (1). In the direction of water flow, the upper end of the downstream drainage section (10) is located inside the upstream drainage section (10) in the left and right direction. A ventilation hole (10a) connected to the receiving cavity (11) is provided between the upstream and downstream drainage sections (10). The drainage section (10) is located behind the water guide section (12).

6. The meter box according to claim 5, characterized in that: The bottom of the box (1) is also provided with a ventilation hood (20) on the corresponding side wall, which is fitted outside all the drainage parts (10). The ventilation hood (20) has an air inlet (20a) that extends in the left and right directions and is connected to the outside and the ventilation hole (10a) respectively.

7. An electric meter box assembly, characterized in that: Includes the meter box as described in claim 1; The meter box assembly also includes The first circuit breaker (300) is mounted on the switch mounting plate (100) and is located on the left side of the partition (200); The second circuit breaker (400) is mounted on the switch mounting plate (100) and located on the right side of the partition (200).

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