Terminal shell structure of electric energy meter

Abstract

The utility model provides a terminal housing structure of an electric energy meter, the electric energy meter comprises a hollow body and a circuit board arranged in the body, a terminal housing is arranged in the body and below the circuit board, the terminal housing comprises a plurality of accommodating grooves for accommodating current terminals, and the accommodating grooves are communicated with the circuit board. A wire is connected between the current terminal and the circuit board, a positioning fixture block used for positioning the wire is fixed at the position of the terminal shell, the positioning fixture block abuts against the lower end face of the circuit board, and the terminal shell structure can overcome the defects that in the prior art, a manual welding mode is tedious, and desoldering is prone to being caused.

Description

Technical Field

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

[0002] An electricity meter is an instrument used to measure the electrical energy consumption in a circuit. Its core function is to accurately record the electricity used by a user over a period of time, serving as the basis for electricity billing. An electricity meter includes current terminals and a circuit board. The current terminals are mainly used to connect a current coil, which is connected in series in the main circuit and is responsible for detecting the load current. When current flows through the current coil, it generates an alternating magnetic flux proportional to the load current. This magnetic flux passes through an aluminum disc and induces eddy currents on it. The eddy currents then interact with the magnetic flux generated by the voltage coil, forming a torque that drives the aluminum disc to rotate. The rotational speed of the aluminum disc is proportional to the power in the circuit, thus achieving the metering of electrical energy. The current terminals and the circuit board are connected by wires, allowing external current signals to be accurately introduced into the current coil or sampling circuit inside the electricity meter, enabling real-time detection of the load current and metering of electrical energy. In existing technology, one end of the wire needs to be manually soldered to the current terminal, and the other end to the circuit board. This soldering method is not only cumbersome, but also prone to detachment due to varying worker skill levels, thus affecting the metering of electrical energy. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is to overcome the defects of the existing manual welding method, which is not only cumbersome but also prone to desoldering, so as to provide a wiring structure for electricity meters that can be welded quickly and ensure welding quality.

[0004] Therefore, this utility model provides a terminal housing structure for an electricity meter. The electricity meter includes a hollow body and a circuit board disposed inside the body. The terminal housing is disposed inside the body and located below the circuit board. The terminal housing includes several receiving slots for accommodating current terminals. A wire is connected between the current terminal and the circuit board. A positioning block for positioning the wire is fixed at the terminal housing. The positioning block abuts against the lower end face of the circuit board.

[0005] Furthermore: the positioning block is provided with a number of slots for wires to be inserted, and a pin is provided at the position where the wire connects to the slot, and the pin can be inserted into the slot.

[0006] Furthermore: baffles are provided on both sides of any slot, and an abutment block is provided between two adjacent baffles, extending toward one side of the circuit board and abutting against the lower end face of the circuit board. The slot is connected to the abutment block, and the card pin can pass through the slot and be soldered to the circuit board.

[0007] Furthermore: the pin includes a support portion that abuts against the abutment block and an insertion portion disposed above the support portion, the support portion and the insertion portion being arranged in a "T" shape.

[0008] Furthermore: the positioning block and the terminal housing are integrally injection molded.

[0009] Furthermore: a connecting block is welded to the side of the wire facing away from the pin, and a slot for inserting the connecting block is provided at the terminal housing.

[0010] Furthermore: the connecting block includes a welding end for welding to the wire and a connecting end that is fitted inside the terminal housing for external connecting wires to be inserted and connected, wherein the connecting end is provided with a blind groove for the connecting wires to be inserted.

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

[0012] 1. The terminal housing structure of the electricity meter provided by this utility model transmits the information collected from the current terminal to the circuit board. Compared with the prior art, when connecting the current terminal and the circuit board, it is only necessary to use equipment to clamp one end of the wire onto the terminal housing and the other end onto the positioning block. Then, wave soldering equipment is used to clamp the wire onto the positioning block and finally perform uniform wave soldering. This eliminates the need for manual welding. The wire ends clamped onto the terminal housing and positioning block can form a preliminary fixation, and then the wave soldering forms a secondary fixation. This not only ensures the stability of the welding position but also prevents the wire from detaching during strong vibration.

[0013] 2. The present invention provides a terminal housing structure for an electricity meter, wherein the positioning block is provided with several slots, and the wire is provided with a pin connected to the slot. During installation, the pin can be fixed in the slot by the equipment, and then the pin is soldered to the circuit board by wave soldering. This greatly saves labor costs and eliminates the need to deal with the lead wire. 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 connection structure between the main body and the terminal housing;

[0016] Figure 2This is a schematic diagram of the connection structure between the terminal housing and the circuit board.

[0017] Figure 3 This is a schematic diagram of the overall structure of the terminal housing;

[0018] Figure 4 for Figure 3 Enlarged view of section A in the middle;

[0019] Figure 5 This is a schematic diagram of the connection structure between the terminal housing and the circuit board.

[0020] Figure 6 for Figure 5 Enlarged view of section B;

[0021] Figure 7 This is a cross-sectional structural diagram of the terminal housing and the connecting block.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Body; 2. Circuit board; 3. Several receiving slots; 4. Wire; 5. Positioning block; 51. Slot; 52. Pin; 521. Support part; 522. Insertion part; 53. Baffle; 54. Abutment block; 6. Connecting block; 61. Welding end; 62. Connection end; 7. Slot; 8. Blind slot. Detailed Implementation

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] Example

[0029] This embodiment provides a terminal housing structure for an electricity meter. The electricity meter includes a hollow body 1 and a circuit board 2 disposed inside the body 1. The terminal housing is disposed inside the body 1 and located below the circuit board 2. The terminal housing includes several receiving slots 3 for accommodating current terminals. A wire 4 is connected between the current terminals and the circuit board 2. A positioning block 5 for positioning the wire 4 is fixed at the terminal housing. The positioning block 5 abuts against the lower end face of the circuit board 2.

[0030] The specific improvements mentioned above are as follows: Figures 1-4 As shown, when transmitting the information collected from the current terminal to the circuit board 2, compared with the prior art, when connecting the current terminal and the circuit board 2, it is only necessary to use the equipment to clamp one end of the wire 4 onto the terminal housing and the other end onto the positioning block 5, and then use the wave soldering equipment to clamp it onto the positioning block 5, and finally perform uniform wave soldering. In this way, manual welding is not required. The two ends of the wire 4 clamped onto the terminal housing and the positioning block 5 can form a preliminary fixation, and then the wave soldering forms a secondary fixation. This not only ensures the stability of the welding position, but also prevents the wire 4 from detaching during strong vibration. In this embodiment, the equipment for clamping the wire 4 and the wave soldering equipment are both prior art, and their working principle will not be described in detail here.

[0031] Based on the above embodiments: the positioning block 5 is provided with a plurality of slots 51 for the wire 4 to be inserted, and a pin 52 is provided at the position where the wire 4 is connected to the slot 51, and the pin 52 can be inserted into the slot 51.

[0032] The specific improvements mentioned above are as follows: Figure 4As shown, the positioning block 5 is provided with several slots 51, and the wire 4 is provided with pins 52 that are connected to the slots 51. During installation, the pins 52 can be fixed in the slots 51 by the equipment. Subsequently, the pins 52 are soldered to the circuit board 2 by wave soldering. This greatly saves labor costs and eliminates the need to deal with the lead wires of the wire 4.

[0033] Based on the above embodiments: baffles 53 are provided on both sides of any slot 51, and an abutment block 54 is provided between two adjacent baffles 53, extending toward one side of the circuit board 2 and abutting against the lower end face of the circuit board 2. The slot 51 is connected to the abutment block 54, and the pin 52 can pass through the slot 51 and be soldered to the circuit board 2.

[0034] The specific improvements mentioned above are as follows: Figures 3-6 As shown, a baffle 53 is provided between two adjacent slots 51. The baffle 53 divides each slot 51 into a separate area. In order to ensure that the baffle 53 can be stably connected to the circuit board 2 and that the pins 52 can be successfully soldered to the circuit board 2, an abutment block 54 is provided above the baffle 53 to abut against the lower end face of the circuit board 2. The abutment block 54 can position the circuit board 2 so that the pins 52 of the circuit board 2 can be accurately inserted into the slots of the circuit board 2, which facilitates subsequent wave soldering.

[0035] Based on the above embodiments: the pin 52 includes a support portion 521 that abuts against the abutting block 54 and an insertion portion 522 disposed above the support portion 521, wherein the support portion 521 and the insertion portion 522 are arranged in a "T" shape.

[0036] The specific improvements mentioned above are as follows: Figure 6 As shown, the pin 52 includes a support portion 521 and a plug portion 522. The support portion 521 and the plug portion 522 are arranged in a "T" shape. The plug portion 522 is inserted into the slot 51 and is interference-fitted with the slot 51. Through the arrangement of the slot 51, the position of the plug portion 522 can be determined by the support portion 521. Thus, when the circuit board 2 is connected to the terminal housing, the plug portion 522 can be naturally inserted into the circuit board 2, waiting for subsequent wave soldering. During the soldering process, there is no need to manually adjust the position of the plug portion 522.

[0037] Based on the above embodiments: the positioning block 5 is integrally injection molded with the terminal housing.

[0038] The specific improvements mentioned above are as follows: Figures 3-6 As shown, the positioning block 5 and the terminal housing are integrally injection molded by injection molding equipment. During installation, there is no need for manual assembly of the two, which effectively improves the installation efficiency.

[0039] Based on the above embodiments: a connecting block 6 is welded to the side of the wire 4 facing away from the pin 52, and a slot 7 is provided at the terminal housing for the connecting block 6 to be inserted.

[0040] Based on the above embodiments: the connecting block 6 includes a welding end 61 that is welded to the wire 4 and a connecting end 62 that is fitted inside the terminal housing for external connecting wires to be inserted and connected. The connecting end 62 is provided with a blind groove 8 for the insertion of connecting wires.

[0041] The specific improvements mentioned above are as follows: Figure 7 As shown, a connecting block 6 is welded to the part where the wire 4 connects to the terminal housing. The connecting block 6 includes a welding end 61 and a connecting end 62. The wire 4 of the current terminal is inserted into the blind slot 8 and connected to the connecting end 62. The wire 4 is welded at the welding end 61 and extends to the circuit board 2.

[0042] 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 terminal housing structure for an electricity meter, characterized in that: The electricity meter includes a hollow body (1) and a circuit board (2) disposed inside the body (1). The terminal housing is disposed inside the body (1) and located below the circuit board (2). The terminal housing includes several receiving slots (3) for accommodating current terminals. A wire (4) is connected between the current terminals and the circuit board (2). A positioning block (5) for positioning the wire (4) is fixed at the terminal housing. The positioning block (5) abuts against the lower end face of the circuit board (2).

2. The terminal housing structure of an electricity meter according to claim 1, characterized in that: The positioning block (5) is provided with a plurality of slots (51) for the wire (4) to be inserted. A pin (52) is provided at the position where the wire (4) is connected to the slot (51), and the pin (52) can be inserted into the slot (51).

3. The terminal housing structure of an electricity meter according to claim 2, characterized in that: Each slot (51) has a baffle (53) on both sides. Between two adjacent baffles (53), there is an abutment block (54) that extends toward the circuit board (2) and abuts against the lower end face of the circuit board (2). The slot (51) is connected to the abutment block (54). The pin (52) can pass through the slot (51) and be soldered to the circuit board (2).

4. The terminal housing structure of an electricity meter according to claim 2 or 3, characterized in that: The pin (52) includes a support portion (521) that abuts against the abutting block (54) and a plug portion (522) disposed above the support portion (521). The support portion (521) and the plug portion (522) are arranged in a "T" shape.

5. The terminal housing structure of an electricity meter according to claim 4, characterized in that: The positioning block (5) is integrally injection molded with the terminal housing.

6. The terminal housing structure of an electricity meter according to claim 4, characterized in that: A connecting block (6) is welded to the side of the wire (4) facing away from the pin (52), and a slot (7) is provided at the terminal housing for the connecting block (6) to be inserted.

7. The terminal housing structure of an electricity meter according to claim 6, characterized in that: The connecting block (6) includes a welding end (61) that is welded to the wire (4) and a connecting end (62) that is fitted inside the terminal housing for external connecting wires to be inserted and connected. The connecting end (62) is provided with a blind groove (8) for the connecting wires to be inserted.

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