Moisture environment anti-condensation type electric energy meter

Abstract

This utility model discloses an anti-condensation energy meter for humid environments, relating to the field of energy meter technology. The utility model includes a base assembly, a meter cover assembly on the upper side of the base assembly, and a circuit board (PCBA) inside the base assembly. A sealing rope is provided between the base assembly and the meter cover assembly. A tail cap is provided on one side of the base assembly, and an anti-condensation tube is provided on one side of the tail cap. A wire passage groove for use with the anti-condensation tube is opened on one side of the anti-condensation tube. The tail cap is snapped onto the meter cover assembly, and the inner side of the tail cap is movably fitted to the base assembly. The anti-condensation energy meter for humid environments provided by this utility model, through the sealing rope filling the gaps in the casing, the sealing adhesive layer of the wire passage groove sealing the wire entry point, and the design of the anti-condensation tube absorbing internal moisture, effectively blocks the intrusion of external moisture and the generation of internal condensation, effectively adapting to the needs of use in humid environments, preventing damage to the circuit board due to moisture or condensation, and improving the operational stability and service life of the energy meter.

Description

Technical Field

[0001] This utility model relates to the field of electricity meter technology, specifically to an anti-condensation electricity meter for humid environments. Background Technology

[0002] With the development of society and economy, electricity meters are widely used all over the world. In areas with high humidity overseas, the requirements for waterproof and non-disassembly of electricity meters are getting higher and higher. In order to make the products waterproof and difficult to open, the meter cover assembly and base assembly of the products are usually ultrasonically welded to achieve this effect.

[0003] However, existing technologies still have the following problems: Existing electricity meters lack targeted moisture-proof and anti-condensation designs. They do not use a sealed structure to block external moisture intrusion, nor do they have components to absorb internal moisture. In humid environments, they are prone to damage to circuit boards due to moisture intrusion or internal condensation, resulting in poor operational stability and short service life.

[0004] To address the aforementioned problems, the inventors proposed a condensation-resistant energy meter for humid environments. Utility Model Content

[0005] To address the problem of insufficient waterproof sealing in humid environments and the susceptibility of internal circuit boards to damage due to moisture, the present invention aims to provide a humid environment-resistant condensation-proof energy meter.

[0006] To solve the above technical problems, the present invention adopts the following technical solution: a humid environment anti-condensation energy meter, the energy meter includes a base assembly, a circuit board PCBA is provided inside the base assembly, a sealing rope is provided between the base assembly and the meter cover assembly, a tail cover is provided on one side of the base assembly, an anti-condensation tube is provided on one side of the tail cover, a wire passage groove for use with the anti-condensation tube is opened on one side of the anti-condensation tube, the tail cover is snapped on the meter cover assembly, and the inner side of the tail cover is movably fitted with the base assembly.

[0007] Preferably, a first locking member is fixedly provided on the inner side of the watch cover assembly, and a first slot for cooperating with the first locking member is fixedly provided in the base assembly; a second locking member is fixedly provided on the inner side of the watch cover assembly, and a second slot for cooperating with the second locking member is fixedly provided in the base assembly; an auxiliary locking member is fixedly provided on the inner side of the watch cover assembly, and an auxiliary locking plate for cooperating with the auxiliary locking member is fixedly provided in the base assembly.

[0008] Preferably, the anti-condensation tube is a hollow tubular structure made of water-absorbing and moisture-proof material. Its cavity is filled with a solid desiccant with a high moisture absorption ratio. The tube wall of the anti-condensation tube is uniformly provided with micron-sized air pores (pore diameter 0.1-0.5μm). The cable groove is connected to the cavity of the anti-condensation tube and the groove wall is covered with a waterproof sealant layer. A wide connecting ring and a narrow connecting ring are fixedly provided at both ends of the anti-condensation tube, respectively. A connecting half ring is fixedly provided at the end of the wide connecting ring, and one side of the connecting half ring is fixedly connected to the base assembly.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model uses a sealing rope to fill the gap in the shell and a sealing adhesive layer to seal the wire entry point. Combined with the design of an anti-condensation tube to absorb internal moisture, it effectively blocks the intrusion of external moisture and the generation of internal condensation. It can effectively adapt to the needs of humid environments, prevent the circuit board from being damaged by moisture or condensation, and improve the operational stability and service life of the electricity meter.

[0010] 2. This utility model replaces the traditional ultrasonic welding process by adopting a snap-fit ​​connection structure with multiple sets of clips, slots, and plates. It eliminates the need to purchase special welding equipment and molds, reducing equipment investment costs. At the same time, it eliminates the welding and debugging process, avoids shell damage during debugging, reduces material waste and labor costs, and improves assembly efficiency. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is an exploded view of the relevant structure of the base assembly of this utility model.

[0014] Figure 3 This is an exploded view of the connection structure between the cover assembly and the base assembly of this utility model.

[0015] Figure 4 This is an exploded cross-sectional view of the anti-condensation pipe of this utility model.

[0016] In the diagram: 1. Circuit board PCBA; 2. Cover assembly; 21. First clip; 22. Second clip; 23. Auxiliary clip; 3. Sealing rope; 4. Base assembly; 41. First slot; 42. Second slot; 43. Auxiliary clip plate; 5. Tail cap; 6. Anti-condensation pipe; 61. Wide connecting ring; 62. Narrow connecting ring; 63. Connecting half ring; 64. Wire channel. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example: Figure 1-4 As shown, this utility model provides an anti-condensation electricity meter for humid environments. The electricity meter includes a base assembly 4, a meter cover assembly 2 on the upper side of the base assembly 4, and a circuit board PCBA 1 inside the base assembly 4. A sealing rope 3 is provided between the base assembly 4 and the meter cover assembly 2. A tail cover 5 is provided on one side of the base assembly 4, and an anti-condensation tube 6 is provided on one side of the tail cover 5. A wire passage groove 64 for use with the anti-condensation tube 6 is opened on one side of the anti-condensation tube 6. The tail cover 5 is snapped on the meter cover assembly 2, and the inner side of the tail cover 5 is movably fitted with the base assembly 4. During assembly, the circuit board PCBA is first placed inside the base assembly 4, and the sealing rope 3 is placed on the edge of the base assembly 4. Then, the meter cover assembly 2 is closed on the upper side of the base assembly 4, and the tail cover 5 is snapped on the meter cover assembly 2, so that the inner side of the tail cover 5 is movably fitted with the base assembly 4, forming a closed shell of the electricity meter body. The sealing rope 3 fills the gap between the meter cover assembly 2 and the base assembly 4, preventing external moisture from entering from the shell gap.

[0019] like Figure 1-4 As shown, a first locking member 21 is fixedly provided on the inner side of the watch cover assembly 2, and a first slot 41 for cooperating with the first locking member 21 is fixedly provided in the base assembly 4. A second locking member 22 is fixedly provided on the inner side of the watch cover assembly 2, and a second slot 42 for cooperating with the second locking member 22 is fixedly provided in the base assembly 4. An auxiliary locking member 23 is fixedly provided on the inner side of the watch cover assembly 2, and an auxiliary locking plate 43 for cooperating with the auxiliary locking member 23 is fixedly provided in the base assembly 4. The first locking member 21 on the inner side of the watch cover assembly 2 is engaged with the first slot 41 in the base assembly 4, and the second locking member 22 is engaged with the second slot 42 in the base assembly 4. At the same time, the auxiliary locking member 23 on the inner side of the watch cover assembly 2 engages with the auxiliary locking plate 43 in the base assembly 4, thereby completing the multi-point locking and fixing of the watch cover assembly 2 and the base assembly 4.

[0020] like Figure 1-4As shown, the anti-condensation tube 6 is a hollow tubular structure made of water-absorbing and moisture-proof material. Its cavity is filled with a solid desiccant with a high moisture absorption rate. The tube wall of the anti-condensation tube 6 has evenly distributed pores with a diameter of 0.1-0.5μm. The wire groove 64 is connected to the cavity of the anti-condensation tube 6 and the groove wall is covered with a waterproof sealant layer. Wide connecting ring 61 and narrow connecting ring 62 are fixedly provided at both ends of the anti-condensation tube 6, respectively. A connecting half ring 63 is fixedly provided at the end of the wide connecting ring 61, and one side of the connecting half ring 63 is fixedly connected to the base assembly. The anti-condensation tube 6 on one side of the tail cap 5 is a hollow tubular structure made of water-absorbing and moisture-proof material. Its cavity is filled with a solid desiccant with a high moisture absorption rate. The tube wall has evenly distributed micron-level vent holes of 0.1-0.5μm. Water vapor in the air inside the electricity meter can enter the cavity of the anti-condensation tube 6 through the vent holes and be absorbed by the solid desiccant inside, preventing water vapor from condensing on the surface of the circuit board PCBA1.

[0021] The electricity meter's wires pass through the anti-condensation pipe 6's cavity via the wire groove 64 on one side. The waterproof sealant layer covering the groove wall of the wire groove 64 fills the gap between the wire and the groove 64, preventing external moisture from entering through the wire entry point. The connecting half-ring 63 at the end of the wide connecting ring 61 further enhances the sealing between the anti-condensation pipe 6 and the tail cap 5, ensuring that the anti-condensation pipe 6 is firmly installed and has no moisture leakage channels. The specific installation path of the wires is as follows: from outside the electricity meter, they pass through the narrow connecting ring 62 at the end of the anti-condensation pipe 6 into its cavity, extend along the inside of the cavity to the inside of the tail cap 5, and finally connect with the bottom. The circuit board PCBA1 inside the base assembly 4 is electrically connected and is within the protection range of the anti-condensation pipe 6 throughout. The fixed position of the anti-condensation pipe 6 is clearly defined as the side of the tail cap 5 facing outward. Its wide connecting ring 61 is tightly fitted to the corresponding mounting surface of the tail cap 5, and the connecting half ring 63 is locked in place with the tail cap 5. At the same time, the narrow connecting ring 62 is fixedly connected to the installation structure (such as wiring sleeve, wall pre-drilled hole surrounding structure) on the side where the external wires pass through, forming a three-point fixing system of "tail cap 5 - anti-condensation pipe 6 - external structure" to ensure that the anti-condensation pipe 6 will not be displaced or loosened.

[0022] Meanwhile, the wide connecting ring 61 and narrow connecting ring 62 at both ends of the anti-condensation tube 6 respectively achieve stable connection between the anti-condensation tube 6 and the tail cap 5 and the external structure. The tube wall of the anti-condensation tube 6 and the wire passage 64 are integrally formed structures, and there is no natural gap between them. The wire passage 64 is a wire channel directly opened on the tube wall of the anti-condensation tube 6. The previously described "waterproof sealant layer can fill the gap between the wire and the wire passage 64" specifically refers to the tiny assembly gap formed between the outer wall of the wire and the inner wall of the wire passage 64 after the wire passes through the wire passage 64. This gap is not a structural gap of the anti-condensation tube 6 itself, but an unavoidable fitting gap during the wire installation process. The waterproof sealant layer can completely seal this fitting gap. Combined with the integral structure of the tube wall of the anti-condensation tube 6 and the wire passage 64, the path of external moisture intrusion from the wire entry point is completely blocked, forming a double protection with the moisture absorption function of the anti-condensation tube 6 cavity.

[0023] Working principle: During assembly, the circuit board PCBA1 and sealing rope 3 are first placed inside the base assembly 4. Then, the meter cover assembly 2 is placed on the upper side of the base assembly 4. The first clip 21 inside the meter cover assembly 2 is inserted into the first slot 41 inside the base assembly 4, and the second clip 22 is inserted into the second slot 42 inside the base assembly 4. At the same time, the auxiliary clip 23 inside the meter cover assembly 2 is engaged with the auxiliary clip 43 inside the base assembly 4, thus completing the multi-point clamping and fixing of the meter cover assembly 2 and the base assembly 4. Then, the tail cover 5 is placed on the meter cover assembly 2, so that the inner side of the tail cover 5 is in close contact with the base assembly 4, forming a closed shell of the main body of the electricity meter. The sealing rope 3 fills the gap between the meter cover assembly 2 and the base assembly 4, preventing external moisture from entering through the shell gap. The anti-condensation tube 6 on one side of the tail cap 5 is a hollow tubular structure made of water-absorbing and moisture-proof material. Its cavity is filled with a solid desiccant with a high moisture absorption rate. The tube wall is evenly opened with micron-level vent holes of 0.1-0.5μm. Moisture in the air inside the electricity meter can enter the cavity of the anti-condensation tube 6 through the vent holes and be absorbed by the solid desiccant inside, preventing moisture from condensing on the surface of the circuit board PCBA1. The wires of the electricity meter pass through the wire groove 64 on one side of the anti-condensation tube 6 into the cavity. The waterproof sealant layer covering the groove wall of the wire groove 64 can fill the gap between the wire and the wire groove 64, preventing external moisture from entering from the wire entry point. At the same time, the wide connecting ring 61 and the narrow connecting ring 62 at both ends of the anti-condensation tube 6 respectively realize the stable connection between the anti-condensation tube 6 and the tail cap 5 and the external structure. The connecting half ring 63 at the end of the wide connecting ring 61 further enhances the fit and sealing between the anti-condensation tube 6 and the tail cap 5, ensuring that the anti-condensation tube 6 is installed firmly and without moisture leakage channels.

[0024] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A condensation-resistant energy meter for humid environments, characterized in that, The electricity meter includes a base assembly (4), a meter cover assembly (2) is provided on the upper side of the base assembly (4), and a circuit board PCBA (1) is provided inside the base assembly (4). A sealing rope (3) is provided between the base assembly (4) and the meter cover assembly (2). A tail cover (5) is provided on one side of the base assembly (4), and an anti-condensation pipe (6) is provided on one side of the tail cover (5). A wire groove (64) is provided on the tail cover (5) to cooperate with the anti-condensation pipe (6).

2. The humid environment anti-condensation energy meter as described in claim 1, characterized in that: The anti-condensation pipe (6) has uniformly opened vent holes on its pipe wall, and the vent hole diameter ranges from 0.1μm to 0.5μm. The wire groove (64) is connected to the cavity of the anti-condensation pipe (6) and the groove wall is covered with a waterproof sealant layer.

3. The humid environment anti-condensation energy meter as described in claim 1, characterized in that: The tail cap (5) is attached to the watch cover assembly (2), and the inner side of the tail cap (5) is movably fitted with the base assembly (4).

4. The humid environment anti-condensation energy meter as described in claim 1, characterized in that: The inner side of the cover assembly (2) is fixedly provided with a first clip (21), and the base assembly (4) is fixedly provided with a first slot (41) for use with the first clip (21).

5. A humid environment anti-condensation energy meter as described in claim 1, characterized in that: The inner side of the cover assembly (2) is fixedly provided with a second clip (22), and the base assembly (4) is fixedly provided with a second slot (42) for use with the second clip (22).

6. A humid environment anti-condensation energy meter as described in claim 1, characterized in that: The inner side of the cover assembly (2) is fixedly provided with an auxiliary clip (23), and the base assembly (4) is fixedly provided with an auxiliary clip plate (43) for use with the auxiliary clip (23).

7. A humid environment anti-condensation energy meter as described in claim 2, characterized in that: The anti-condensation pipe (6) is fixed with a wide connecting ring (61) and a narrow connecting ring (62) at its two ends respectively.

8. A humid environment anti-condensation energy meter as described in claim 7, characterized in that: The end of the wide connecting ring (61) is fixedly provided with a connecting half ring (63), and one side of the connecting half ring (63) is fixedly connected to the base assembly (4).

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