Mutual inductance type prepayment electricity meter

Abstract

The utility model relates to the field of electric energy metering, in particular to a mutual inductance type prepayment electricity meter which comprises a main board, a hardware combination is fixedly connected to the bottom of the main board, and a junction box is connected to the bottom of the hardware combination. The junction box is fixedly installed in the bottom shell, and a buckle is designed in the junction box and used for installing a wiring terminal and a hardware combination. According to the utility model, the external terminals can be protected through the flip covers on the two sides of the mainboard, the wiring terminals and hardware can be combined through the buckles in the bottom shell to be protected completely, and the bottom shell can be fixed on the slide rails to be fixed effectively.

Description

Technical Field

[0001] The utility model relates to the technical field of electric energy metering, in particular to a mutual inductance prepaid electric meter. Background Art

[0002] The three-phase prepaid energy meter is a new type of energy meter with prepayment function. Compared with the traditional energy meter, it not only has higher accuracy and better performance, but also can save users a lot of time and cost.

[0003] The three-phase prepaid energy meter is a digital energy meter consisting of a central processor and related circuits. After the user purchases a certain amount of electricity, the central processor in the energy meter will calculate and display the user's electricity consumption and balance based on the preset electricity price and electricity. When the user's balance is insufficient, the energy meter will automatically power off and wait for the user to replenish it. When the user replenishes it, the energy meter will restart and provide electricity.

[0004] Prepaid watt-hour meter is also called quantitative watt-hour meter and IC card watt-hour meter. In addition to the metering function of ordinary watt-hour meter, the special thing is that users have to buy electricity first before they can use it. If the user does not continue to buy electricity after using up the electricity, the power supply will be automatically cut off and stopped. It is used to measure the AC single-phase active power with a rated frequency of 50Hz, and realize the management function of paying first and then using electricity. It adopts advanced microelectronic technology for data collection, processing and storage, and uses radio frequency cards to transmit data. Its performance indicators meet the standards of GB / T17215-2002 and GB / T18460.3-2001. It has the characteristics of small size, high safety, high reliability, and anti-theft of electricity.

[0005] Existing mutual inductance prepaid electricity meters are usually installed in enterprises, communities, parks, etc. for daily electricity metering, cost statistics and other functions. However, the meters usually installed in distribution boxes are not supervised and are easy to be lost or missed, or the parts may be damaged due to water ingress on rainy days and need to be replaced, which is troublesome. Utility Model Content

[0006] The utility model aims to solve the shortcomings in the prior art and proposes a mutual inductance prepaid electricity meter.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A mutual inductance prepaid electricity meter comprises a main board, a hardware assembly is fixedly connected to the bottom of the main board, and a junction box is connected to the bottom of the hardware assembly;

[0009] The junction box is fixedly installed inside the bottom shell, and buckles are designed inside the junction box for installing the wiring terminals and hardware combination.

[0010] In addition, a preferred structure is that a cover is fixedly connected to the top of the main board, and a flip cover is provided on the side of the main board.

[0011] In addition, a preferred structure is that the flip cover is folded downward and is adapted to be locked with the bottom of the junction box.

[0012] In addition, a preferred structure is that a lens is provided on the top of the surface cover, and the lens is fixed to the top of the surface cover by screws.

[0013] In addition, a preferred structure is that a card slot is provided at the bottom of the bottom shell, and the card slot and the slide rail are adapted to each other, and the bottom shell is fixedly mounted on the slide rail.

[0014] The beneficial effects of the utility model are as follows: the external terminals can be protected by the flip covers 3 on both sides of the mainboard 4, and the wiring terminals and the hardware combination 6 can be completely protected by the buckles 7 inside the bottom shell 8, and the bottom shell 8 can be fixed on the slide rail 10 to effectively fix the entire bottom shell 8. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an axonometric diagram of a mutual inductance prepaid electricity meter proposed by the utility model;

[0016] Figure 2 The utility model discloses an exploded structural diagram of a mutual inductance prepaid electricity meter.

[0017] In the picture: 1 lens, 2 front cover, 3 flip cover, 4 main board, 5 hardware assembly, 6 junction box, 7 buckle, 8 bottom shell, 9 card slot, 10 slide rail. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] Reference Figure 1-2 , a mutual inductance prepaid electricity meter, comprising a main board 4, a hardware assembly 5 is fixedly connected to the bottom of the main board 4, and a junction box 6 is connected to the bottom of the hardware assembly 5;

[0020] The junction box 6 is fixedly installed inside the bottom shell 8 , and a buckle 7 is designed inside the junction box 6 for installing the wiring terminal and the hardware combination 5 .

[0021] Meanwhile, a cover 2 is fixedly connected to the top of the main board 4 , and a flip cover 3 is arranged on the side of the main board 4 .

[0022] In addition, the flip cover 3 is folded downward and is adapted to be locked with the bottom of the junction box 6 .

[0023] In addition, a lens 1 is disposed on the top of the surface cover 2, and the lens 1 is fixed to the top of the surface cover 2 by screws.

[0024] Moreover, a card slot 9 is provided at the bottom of the bottom shell 8, and the card slot 9 is adapted to the slide rail 10, and the bottom shell 8 is fixedly mounted on the slide rail 10. When the bottom shell 8 is mounted on the slide rail 10, the bottom shell 8 can be well fixed.

[0025] In this embodiment, the lens 1 is first fixedly mounted on the cover 2, and then the cover 2 is connected to the main board 4. Then, the flip covers 3 are fixedly mounted on both sides of the main board 4, and the flip covers 3 are installed facing downward.

[0026] The bottom shell 8 is internally designed with a snap-on 7 to fix the junction box 6, and a card retention position is designed inside the junction box 6 for installing the wiring terminals and the hardware combination 5. The hardware combination 5 is connected to the PCB board. The bottom shell 8 has a positioning column to fix the PCB and is pressed and fixed by the face shell. The double flip cover 3 protects the external terminals.

[0027] In addition, the bottom shell 8 is internally designed with a limit and positioning device to limit the installation of the hardware current transformer, and the junction box 6 is limited to receive the copper bar.

[0028] In the utility model, the external terminals can be protected by the flip covers 3 on both sides of the main board 4, and the wiring terminals and the hardware combination 6 can be completely protected by the buckles 7 inside the bottom shell 8, and the bottom shell 8 can be fixed on the slide rail 10 to effectively fix the entire bottom shell 8.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mutual inductance prepaid electricity meter, comprising a main board (4), characterized in that: The bottom of the mainboard (4) is fixedly connected to a hardware assembly (5), and the bottom of the hardware assembly (5) is connected to a junction box (6); The junction box (6) is fixedly mounted inside the bottom shell (8), and a buckle (7) is designed inside the junction box (6) for mounting a connection terminal and a hardware assembly (5).

2. A mutual inductance prepaid electricity meter according to claim 1, characterized in that: The top of the main board (4) is fixedly connected to a surface cover (2), and the side of the main board (4) is provided with a flip cover (3).

3. A mutual inductance prepaid electricity meter according to claim 2, characterized in that: The flip cover (3) is folded downward and is adapted to be locked with the bottom of the junction box (6).

4. A mutual inductance prepaid electricity meter according to claim 2, characterized in that: A lens (1) is arranged on the top of the surface cover (2), and the lens (1) is fixed to the top of the surface cover (2) by means of screws.

5. The mutual inductance prepaid electricity meter according to claim 1, characterized in that: A card slot (9) is provided at the bottom of the bottom shell (8), and the card slot (9) and the slide rail (10) are adapted to each other, and the bottom shell (8) is fixedly mounted on the slide rail (10).

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