Electric meter box

Abstract

The invention discloses an electric meter box which comprises a box body, a box cover and a flip door. The box cover is arranged on the box body and is provided with an opening; the flip door is rotatably arranged at the opening of the box cover; the flip door is provided with a connecting shaft, and correspondingly, the box cover is provided with a connecting groove for accommodating the end part of the connecting shaft; the box cover is further provided with a guide groove, the guide groove communicates with the connecting groove, and the depth of the side, close to the connecting groove, of the guide groove is smaller than that of the connecting groove. Compared with the prior art, the production and assembly of the invention are not influenced by temperature change.

Description

Technical Field

[0001] The present invention relates to the field of electric meters, and in particular to an electric meter box. Background Art

[0002] The meter box is a device used to store electricity meters. According to electrical wiring requirements, switchgear, measuring instruments, protective electrical equipment and auxiliary equipment are assembled in the meter box, and the market often has protection grade requirements for meter boxes.

[0003] An electric meter box typically consists of a base and a lid. The base has a forward-opening storage chamber, while the lid pivots on the base and is used to open and close the chamber. The lid is typically equipped with a small flap or sliding door, allowing users to clearly observe meter readings without opening the entire lid, thus avoiding potential safety hazards associated with frequent lid openings. Furthermore, maintenance personnel can more easily access the interior of the meter box for necessary repairs and inspections. Accessing the meter box through the small door is more convenient and efficient than opening the entire lid. For example, the Chinese utility model patent application number 202023034853.7 (authorization announcement number CN214622775U) "A single-meter meter box" discloses a single-meter meter box, which includes a front cover and a bottom box. The front cover covers the bottom box, and the internal space of the meter box is formed between the front cover and the bottom box; the front cover is provided with a door lock, a nameplate, a sliding door and a window, the sliding door is provided above the nameplate, and the window is provided above the sliding door; the side of the bottom box is provided with a heat dissipation hole, and the bottom box is provided with a heat dissipation hole. The lower side is provided with input and output line screw rings; the internal space of the meter box is provided with a cable clamp, which is arranged vertically. A type II collector plug-in is provided on the upper side of the cable clamp, and an electric energy meter connector is provided on the right side of the type II collector plug-in. The electric energy meter connector is opposite to the window provided on the front cover, and the electric meter can be viewed without opening the meter box; an input line switch and an output line switch are also provided on the right side of the cable clamp, and the output line switch is opposite to the sliding door provided on the front cover. The output line switch is operated when the sliding door is opened.

[0004] The small door is usually fixed to the box cover by a door hinge. However, due to the influence of weather and the thermal expansion and contraction of the door hinge, the small door is easy to fall off the box cover when the temperature is low, while the door is too large and inconvenient to install when the temperature is high, which reduces production efficiency. In existing production, it is often necessary to modify the assembly size of the small door according to different processing and assembly temperatures to meet the requirements of production efficiency and successful assembly at the same time. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an electric meter box that is easy to install in view of the above technical status, thereby reducing the impact of temperature changes on the production and installation of the electric meter door.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: an electric meter box, comprising:

[0007] Box;

[0008] a box cover, disposed on the box body, the box cover having an opening; and

[0009] A flip door is rotatably arranged at the opening of the box cover;

[0010] Its characteristics are:

[0011] The flip door has a connecting shaft, and correspondingly, the box cover is provided with a connecting groove for accommodating the end of the connecting shaft; the box cover is also provided with a guide groove, which is connected to the connecting groove, and the depth of the guide groove close to the connecting groove is less than the depth of the connecting groove.

[0012] Preferably, the width of the connection between the guide groove and the connecting groove is smaller than the diameter of the connecting groove.

[0013] In order to enable the connecting shaft to slide into the connecting groove with the cooperation of external force during installation, and to prevent the connecting shaft from sliding out of the connecting groove on its own after the installation is completed, preferably, two parallel flat positions are provided on the peripheral wall at one end of the connecting shaft, and the distance between the two flat positions is recorded as D1; ​​the width of the connection between the guide groove and the connecting groove is recorded as D2, D1-D2=0.2-0.3mm.

[0014] Preferably, the electric meter box is provided with only one guide groove.

[0015] In order to facilitate the installation of the flip door, preferably, the guide groove includes:

[0016] a first guide section, wherein the inner diameter of the first guide section is larger than the outer diameter of the connecting shaft;

[0017] The second guide segment has a first end connected to the first guide segment and a second end connected to the connecting groove.

[0018] To facilitate guiding the connecting shaft, the second guide section preferably tightens from the first end to the second end. During installation, under the action of external force, the connecting shaft slides through the self-tightening second guide section and enters the connecting groove. However, after installation, the connecting shaft has difficulty overcoming the smaller inner diameter and sliding into the second guide section.

[0019] In order to improve the sealing performance of the electric meter, preferably, the flip door has an annular sealing section, and correspondingly, the box cover has a sealing ring provided at the box cover opening.

[0020] In order to enable the box cover to undergo a small amount of recoverable deformation under the action of external force, preferably, the box cover is a combination of one or more of polycarbonate and glass fiber.

[0021] Preferably, the bottom end of the flip door has a first through hole, and correspondingly, the box cover has a second through hole, and the flip door and the box cover are connected by screws provided in the first through hole and the second through hole.

[0022] Preferably, the box cover has a mounting portion, an opening is provided in the middle of the mounting portion, and the flip door is provided on the mounting portion.

[0023] Compared with the prior art, the advantages of the present invention are: a guide groove connected to the connecting groove is provided, and the width of the connection between the guide groove and the connecting groove is smaller than the diameter of the connecting groove. Therefore, during installation, due to the action of external force, the connection between the guide groove and the connecting groove is slightly deformed, and the connecting shaft slides from the guide groove into the connecting groove to achieve assembly; after the assembly is completed, since the depth of the guide groove close to the connecting groove is smaller than the depth of the connecting groove, the connecting shaft cannot slide out of the connecting groove on its own, and in winter, even if there is thermal expansion and contraction of the flip door, the connecting shaft cannot slide out of the connecting groove on its own, thereby reducing the influence of thermal expansion and contraction on the assembly of the flip door, and there is no need to change the assembly dimensions of the flip door and the box lid according to the climate of production and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of an embodiment;

[0025] Figure 2 It is an exploded schematic diagram of an embodiment;

[0026] Figure 3 This is a schematic structural diagram of a flip door according to an embodiment;

[0027] Figure 4 is a cross-sectional view of an embodiment;

[0028] Figure 5 for Figure 4 Magnified view of point A. DETAILED DESCRIPTION

[0029] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0030] like Figure 1-5 FIG. 1 is a preferred embodiment of the present invention. An electric meter box comprises a box body 1, a box cover 2, a flip door 3 and screws 4.

[0031] The box cover 2 is arranged on the box body 1, and the box cover 2 has an opening 21; the box cover 2 has a mounting portion 26, and the opening 21 is provided in the middle of the mounting portion 26. The flip door 3 is arranged on the mounting portion 26 and is rotatably arranged at the opening 21 of the box cover 2; the box cover 2 is a combination of one or more materials of polycarbonate and glass fiber. Therefore, the box cover 2 is flexible and can be slightly deformed under the action of external force and recover when the external force is lost.

[0032] The flip door 3 has a connecting shaft 31. The lid 2 is provided with a connecting groove 22 that accommodates the end of the connecting shaft 31. The lid 2 also has a guide groove 23 that communicates with the connecting groove 22. The depth of the guide groove 23 near the connecting groove 22 is less than the depth of the connecting groove 22. The width of the guide groove 23 at its junction with the connecting groove 22 is less than the diameter of the connecting groove 22. Two parallel flattened portions 311 are provided on the periphery of one end of the connecting shaft 31. The distance between the two flattened portions 311 is designated D1. The width of the guide groove 23 at its junction with the connecting groove 22 is designated D2, where D1 - D2 = 0.2-0.3 mm. The guide groove 23 includes a first guide segment 231 and a second guide segment 232. The first end of the second guide segment 232 communicates with the first guide segment 231, and the second end communicates with the connecting groove 22. The second guide segment 232 tapers from its first end to its second end. The meter box has only one guide groove 23. The inner diameter of the first guide section 231 is larger than the outer diameter of the connecting shaft 31 .

[0033] The flip door 3 has an annular sealing section 32, and the box cover 2 has a corresponding sealing ring 24 provided at the opening 21 of the box cover 2. The bottom end of the flip door 3 has a first through hole 33, and the box cover 2 has a corresponding second through hole 25. The flip door 3 and the box cover 2 are connected by screws 4 provided in the first through hole 33 and the second through hole 25.

[0034] The assembly process of this embodiment is as follows:

[0035] First, the box cover 2 is mounted on the box body 1. Then, one end of the connecting shaft 31 of the flip door 3 is positioned in the connecting groove 22. This connecting groove is not connected to the guide groove 23. Later, due to external force applied by the user, the connection between the guide groove 23 and the connecting groove 22 is slightly deformed, allowing the other end of the connecting shaft 31 to slide from the guide groove 23 into the connecting groove 22. In other installation methods, the flip door 3 can also be mounted on the box cover 2 first, and then the box cover 2 is mounted on the box body 1.

[0036] When the temperature changes, if the temperature is high, the flip door 3 becomes slightly larger, and the flip door 3 is assembled according to the above assembly method. When the temperature is low, the flip door 3 becomes slightly smaller. Since the depth of the guide groove 23 near the connecting groove 22 is less than the depth of the connecting groove 22, the connecting shaft 31 in the connecting groove 22 is difficult to overcome the depth difference and slides out of the guide groove 23.

Claims

1. An electric meter box, comprising: Box (1); A box cover (2) is provided on the box body (1), and the box cover (2) has an opening (21); as well as A flip door (3) is rotatably arranged at the opening (21) of the box cover (2); Its characteristics are: The flip door (3) has a connecting shaft (31), and correspondingly, a connecting groove (22) for accommodating the end of the connecting shaft (31) is provided on the box cover (2); the box cover (2) is also provided with a guide groove (23), the guide groove (23) is communicated with the connecting groove (22), and the depth of the guide groove (23) on the side close to the connecting groove (22) is less than the depth of the connecting groove (22).

2. The electric meter box according to claim 1, characterized in that: The width of the connection between the guide groove (23) and the connection groove (22) is smaller than the diameter of the connection groove (22).

3. The electric meter box according to claim 2, characterized in that: Two parallel flattened portions (311) are provided on the peripheral wall at one end of the connecting shaft (31), and the distance between the two flattened portions (311) is recorded as D1; ​​the width of the connection between the guide groove (23) and the connecting groove (22) is recorded as D2, and D1-D2=0.2-0.3mm.

4. The electric meter box according to claim 1, characterized in that: The electric meter box is provided with only one guide groove (23).

5. The electric meter box according to claim 3, characterized in that: The guide groove (23) comprises: a first guide section (231), wherein the inner diameter of the first guide section (231) is larger than the outer diameter of the connecting shaft (31); The second guide section (232) has a first end in communication with the first guide section (231) and a second end in communication with the connecting groove (22).

6. The electric meter box according to claim 5, characterized in that: The second guide section (232) has a tendency to tighten from the first end to the second end.

7. The electric meter box according to claim 1, characterized in that: The flip door (3) has an annular sealing section (32), and correspondingly, the box cover (2) has a sealing ring (24) arranged at the opening (21) of the box cover (2).

8. The electric meter box according to claim 1, characterized in that: The box cover (2) is a combination of one or more of polycarbonate and glass fiber.

9. The electric meter box according to any one of claims 1 to 8, characterized in that: The bottom end of the flip door (3) has a first through hole (33), and correspondingly, the box cover (2) has a second through hole (25). The flip door (3) and the box cover (2) are connected by screws (4) arranged in the first through hole (33) and the second through hole (25).

10. The electric meter box according to any one of claims 1 to 8, characterized in that: The box cover (2) has a mounting portion (26), an opening (21) is provided in the middle of the mounting portion (26), and the flip door (3) is provided on the mounting portion (26).

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