Mutual inductor supporting structure of electric energy meter

Abstract

The utility model provides a mutual inductor supporting structure of an electric energy meter, the electric energy meter comprises a shell, a current terminal shell arranged in the shell and a circuit board located at the side part of the current terminal shell, a mutual inductor is arranged between the current terminal shell and the circuit board, a current column is arranged between the mutual inductor and the current terminal shell, and the current column is connected with the current terminal shell. The current terminal shell is provided with a positioning auxiliary block, and the mutual inductor is provided with a first conductive needle which can be inserted into the positioning auxiliary block, extends to the circuit board and is welded with the circuit board. The mutual inductor and the shell are fixed through screws, and the defect of poor welding possibly can be caused by the connection mode.

Description

Technical Field

[0001] This utility model relates to the field of electricity meter technology, specifically to a current transformer support structure for an electricity meter. Background Technology

[0002] An electricity meter is an instrument used to measure the amount of electrical energy consumed in a circuit. Its core function is to accurately record the amount of electricity used by a user over a period of time, serving as the basis for electricity billing. In existing technology, the current transformer in the electricity meter converts the high voltage and high current of the power grid into a standard low voltage and low current that the meter can safely measure. This ensures the safety of metering equipment and personnel, and also achieves accurate metering of high-power loads. In existing technology, the current transformer is separately soldered to the circuit board via a sampling line, and the current transformer is fixed to the housing with screws. This connection method may cause poor soldering, and the long sampling line may come into contact with other low-voltage lines, leading to voltage withstand problems. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is to overcome the defects in the prior art where the current transformer is separately welded to the circuit board by the sampling line and the current transformer is fixed to the housing by screws. This connection method may cause poor welding. In order to provide a current transformer support structure for an energy meter with good current information transmission effect.

[0004] Therefore, this utility model provides a current transformer support structure for an electricity meter. The electricity meter includes a housing, a current terminal shell disposed inside the housing, and a circuit board located on the side of the current terminal shell. A current transformer is disposed between the current terminal shell and the circuit board, and a current column is disposed between the current transformer and the current terminal shell. A positioning auxiliary block is disposed on the current terminal shell, and a first conductive pin is disposed on the current transformer that can be inserted into the positioning auxiliary block and extend to the circuit board and welded to the circuit board.

[0005] Furthermore: the current terminal housing is provided with a plurality of receiving slots for accommodating current columns, the current columns are inserted into the receiving slots, and current plates are inserted into the current transformer, the current plates being welded to the current columns.

[0006] Furthermore: the positioning auxiliary block is integrally formed with the current terminal shell, and a plug is provided on the side of the positioning auxiliary block opposite to the circuit board for insertion into the circuit board.

[0007] Furthermore: a voltage plate is led out from one side of the current plate, and a second conductive pin is provided at the end of the voltage plate facing away from the current plate. The second conductive pin passes through the positioning auxiliary block and is soldered to the circuit board.

[0008] Furthermore: the current transformer includes a circular housing for accommodating the main body and a square housing for accommodating the data cable, the circular housing and the square housing being integrally formed.

[0009] Furthermore, a positioning part that abuts against the positioning auxiliary block is also provided between the circular receiving shell and the square receiving shell.

[0010] Furthermore, a foolproof structure is provided between the current column and the receiving groove to prevent misinsertion of the current column.

[0011] The technical solution of this utility model has the following advantages:

[0012] 1. This utility model provides a current transformer support structure for an electricity meter. The electricity meter includes a housing and a current terminal shell disposed inside the housing. The two ends of the current transformer are connected to the current terminal shell and the circuit board, respectively. A current column is provided between the current transformer and the current terminal shell. The current column can replace the wire for current transmission. During the transmission process, the current column transmits the current to the current transformer. Then, the current transformer is connected to the circuit board through a first conductive pin. The current transformer senses the current and forms an induced signal, which is then collected by the circuit board. In this way, the electricity meter can calculate the current value used by the user.

[0013] 2. The present invention provides a current transformer support structure for an electricity meter. The current terminal housing is provided with several receiving slots for accommodating current columns. The current columns are inserted into the receiving slots, one end of the current column is connected to the current terminal, and the other end is welded to the current plate on the current transformer. This arrangement of current columns, current plates, and current transformer can effectively replace the wire connection method, avoid poor welding, and prevent the lead wire from coming into contact with other low-voltage lines when it is long, which could lead to electricity meter failure. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the internal structure of an electricity meter;

[0016] Figure 2 This is a schematic diagram of the overall structure of the current transformer and the current terminal housing.

[0017] Figure 3 This is another schematic diagram of the overall structure of the current transformer and the current terminal housing.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Housing; 2. Current terminal housing; 21. Positioning auxiliary block; 3. Circuit board; 4. Current transformer; 41. First conductive pin; 42. Current plate; 43. Second conductive pin; 5. Current column; 6. Receiving slot; 7. Insert block; 8. Voltage plate; 9. Circular receiving shell; 91. Square receiving shell; 92. Positioning part; 93. Foolproof structure. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0024] Example

[0025] This embodiment provides a current transformer support structure for an electricity meter. The electricity meter includes a housing 1, a current terminal housing 2 disposed inside the housing 1, and a circuit board 3 located on the side of the current terminal housing 2. A current transformer 4 is disposed between the current terminal housing 2 and the circuit board 3. A current column 5 is disposed between the current transformer 4 and the current terminal housing 2. A positioning auxiliary block 21 is disposed on the current terminal housing 2. A first conductive pin 41 is disposed on the current transformer 4, which can be inserted into the positioning auxiliary block 21 and extend to the circuit board 3 and is soldered to the circuit board 3.

[0026] The specific improvements mentioned above are as follows: Figure 1 and Figure 2 As shown, the electricity meter includes a housing 1 and a current terminal housing 2 disposed inside the housing 1. The two ends of the current transformer 4 are connected to the current terminal housing 2 and the circuit board 3 respectively. A current column 5 is provided between the current transformer 4 and the current terminal housing 2. The current column 5 can replace the wire for current transmission. During the transmission process, the current column 5 transmits the current to the current transformer 4. Then, the current transformer 4 is connected to the circuit board 3 through the first conductive pin 41. The current transformer 4 senses the current and forms an induced signal, which is then collected by the circuit board 3. In this way, the electricity meter can calculate the current value used by the user.

[0027] Based on the above embodiments: the current terminal housing 2 is provided with a plurality of receiving slots 6 for accommodating current columns, the current columns 5 are inserted into the receiving slots 6, the current transformer 4 is provided with current plates 42, and the current plates 42 are welded to the current columns 5.

[0028] The specific improvements mentioned above are as follows: Figure 2 and Figure 3 As shown, the current terminal housing 2 is provided with several receiving slots 6 for accommodating the current column 5. The current column 5 is inserted into the receiving slot 6, one end of the current column 5 is connected to the current terminal, and the other end is welded to the current plate 42 on the current transformer 4. In this way, the combination of the current column 5, the current plate 42 and the current transformer 4 can effectively replace the wire connection method, avoid poor welding, and avoid the lead wire coming into contact with other low voltage lines when it is long, which would cause the energy meter to malfunction.

[0029] Based on the above embodiments: the positioning auxiliary block 21 is integrally formed with the current terminal shell 2, and an insertion block 7 for inserting into the circuit board 3 is provided on the side of the positioning auxiliary block 21 opposite to the circuit board 3.

[0030] The specific improvements mentioned above are as follows: Figure 2 and Figure 3As shown, the positioning auxiliary block 21 and the current terminal shell 2 are integrally injection molded using an injection mold. Therefore, during assembly, it is not necessary to fix the positioning auxiliary block 21 to the current terminal shell 2 separately, saving installation steps. Furthermore, the positioning auxiliary block 21 can initially fix the position of the first conductive pin 41, making it convenient to solder it to the preset soldering position on the circuit board 3 during subsequent soldering. This prevents the first conductive pin 41 from being misaligned due to deformation, which could affect signal acquisition.

[0031] Based on the above embodiment: a voltage plate 8 is led out from one side of the current plate 42, and a second conductive pin 43 is provided at the end of the voltage plate 8 facing away from the current plate 42. The second conductive pin 43 passes through the positioning auxiliary block 21 and is soldered to the circuit board 3.

[0032] The specific improvements mentioned above are as follows: Figure 3 As shown, a voltage plate is led out from one side of the current plate, and a second conductive pin is provided on the side of the voltage plate that is connected to the circuit board. By setting up the voltage plate and the current plate, the circuit can form a complete loop, thereby assisting the circuit board in calculating the current information and feeding it back to the signal terminal.

[0033] Based on the above embodiments: the current transformer 4 includes a circular housing 9 for accommodating the main body and a square housing 91 for accommodating the data cable, wherein the circular housing 9 and the square housing 91 are integrally formed.

[0034] Based on the above embodiments: a positioning part 92 that abuts against the positioning auxiliary block 21 is also provided between the circular receiving shell 9 and the square receiving shell 91.

[0035] The specific improvements mentioned above are as follows: Figure 3 As shown, the transformer 4 has a circular housing 9 that houses the main body and a square housing 91 that wraps the main body wire harness. The square and circular housings are integrally cast, resulting in a stable structure. The positioning part 92 is fastened to the positioning auxiliary block 21, which ensures accurate positioning of the entire housing 1.

[0036] Based on the above embodiments: a foolproof structure 93 is provided between the current column 5 and the receiving groove 6 to prevent the current column 5 from being mis-inserted.

[0037] The specific improvement mentioned above is that by setting the foolproof structure 93, the current column 5 can be prevented from being inserted in reverse, thus effectively preventing fooling.

[0038] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A current transformer support structure for an electricity meter, characterized in that: The electricity meter includes a housing (1), a current terminal housing (2) disposed inside the housing (1), and a circuit board (3) located on the side of the current terminal housing (2). A current transformer (4) is disposed between the current terminal housing (2) and the circuit board (3). A current column (5) is disposed between the current transformer (4) and the current terminal housing (2). A positioning auxiliary block (21) is disposed on the current terminal housing (2). A first conductive pin (41) is disposed on the current transformer (4) that can be inserted into the positioning auxiliary block (21) and extend to the circuit board (3) and is welded to the circuit board (3).

2. The current transformer support structure for an electricity meter according to claim 1, characterized in that: The current terminal housing (2) is provided with several receiving slots (6) for accommodating current columns. The current columns (5) are inserted into the receiving slots (6). The current transformer (4) is provided with a current sheet (42), which is welded to the current column (5).

3. The current transformer support structure for an electricity meter according to claim 2, characterized in that: The positioning auxiliary block (21) is integrally formed with the current terminal shell (2), and a plug (7) is provided on the side of the positioning auxiliary block (21) opposite to the circuit board (3) to be inserted into the circuit board (3).

4. The current transformer support structure for an electricity meter according to claim 3, characterized in that: A voltage plate (8) is led out from one side of the current plate (42). A second conductive pin (43) is provided at the end of the voltage plate (8) facing away from the current plate (42). The second conductive pin (43) passes through the positioning auxiliary block (21) and is soldered to the circuit board (3).

5. The current transformer support structure for an electricity meter according to any one of claims 1-4, characterized in that: The current transformer (4) includes a circular housing (9) for accommodating the main body and a square housing (91) for accommodating the data line, wherein the circular housing (9) and the square housing (91) are integrally formed.

6. The current transformer support structure for an electricity meter according to claim 5, characterized in that: A positioning part (92) that abuts against the positioning auxiliary block (21) is also provided between the circular receiving shell (9) and the square receiving shell (91).

7. The current transformer support structure for an electricity meter according to claim 6, characterized in that: A foolproof structure (93) is provided between the current column (5) and the receiving groove (6) to prevent the current column (5) from being mis-inserted.

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