Structure of electric energy meter and terminal

Abstract

The utility model discloses a structure of an electric energy meter and a terminal, which comprises a bottom shell, a PCBA (Printed Circuit Board Assembly) is arranged in the bottom shell, a terminal box is arranged at the bottom of the bottom shell, a cover shell is arranged outside the bottom shell, a tail cover is arranged at the bottom of the bottom shell, the tail cover is sleeved outside the terminal box, and two sides of the bottom shell and the cover shell are provided with outer skirt edges for clamping and are welded through ultrasonic waves. The two sides of the upper end of the bottom shell are fixedly connected with the cover shell through lead sealing screws, and lead sealing caps are installed on the outer sides of the lead sealing screw installation positions on the cover shell. The PCBA connector is simple and reliable in structure, good in producibility and low in cost, can be simultaneously suitable for connection modes of a screw mode and an ultrasonic welding mode, can be simultaneously compatible with a sealing mode of threading lead sealing and a sealing mode of a lead sealing cap, adopts hard connection for PCBA and terminal connection, reduces the production cost of enterprises, improves the production efficiency, and is suitable for popularization and application. And the structure universality and compatibility are good, and the delivery ability of an enterprise is improved.

Description

Technical Field

[0001] This utility model relates to the field of electricity meter and terminal technology, and in particular to the structure of an electricity meter and terminal. Background Technology

[0002] Electricity meters and terminals are instruments used to measure electrical energy. They are also called electricity meters, kilowatt-hour meters, or kilowatt-hour meters. They refer to instruments that measure various electrical quantities. Currently, electricity meters are becoming increasingly common in industrial production and daily life due to their advantages such as small size, high accuracy, good reliability, and convenient installation.

[0003] The existing methods for fixing the casings of electricity meters and terminals use either screws or ultrasonic welding, which are incompatible due to their different designs. Furthermore, when using ultrasonic welding, the ultrasonic waves are directly pressed onto the casing, which can easily resonate with the internal PCBA crystal oscillator, causing damage. After ultrasonic welding of the casing and base, there are no traces left after prying open the meter for electricity theft. The internal PCBA and terminal button are connected with a flexible connection, resulting in low production efficiency. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model designs a structure for an electricity meter and a terminal.

[0005] The present invention adopts the following technical solution:

[0006] A structure for an electricity meter and terminal includes a bottom shell, a PCBA installed inside the bottom shell, a terminal box installed at the bottom of the bottom shell, a cover installed outside the bottom shell, a tail cover installed at the bottom of the bottom shell, the tail cover being sleeved on the outside of the terminal box, outer skirts being provided on both sides of the bottom shell and the cover shell for engaging and ultrasonic welding, the upper two sides of the bottom shell being fixedly connected to the cover shell by lead-sealing screws, and lead-sealing caps being installed on the cover shell outside the lead-sealing screw mounting positions.

[0007] Preferably, the lead seal cap is installed on the cover using a snap-on connection.

[0008] Preferably, the shunt and neutral wire connector are mounted on the bottom of the PCBA.

[0009] Preferably, the PCBA is connected to the shunt, the neutral wire connector and the terminal block on the terminal box by hard link, and the PCBA is connected to the shunt and the neutral wire connector by wave soldering.

[0010] Preferably, the PCBA is assembled with snap-fit ​​and fixed in the bottom shell by the ribs.

[0011] Preferably, the cover button adopts a three-button compatible design with two display buttons and one programming button.

[0012] Preferably, the end cap and bottom shell are designed in an L-shape.

[0013] Preferably, the cover is provided with a fixing boss.

[0014] Preferably, the end-button clamping screw inside the end-button box is designed to prevent loosening.

[0015] The beneficial effects of this utility model are: the utility model has a simple and reliable structure, good manufacturability, and low cost. It can be applied to both screw-type and ultrasonic welding connection methods, and can be compatible with both wire-threaded lead seals and lead seal caps sealing methods. The PCBA and terminal connection adopts a hard link, which reduces the production cost of enterprises, improves production efficiency, and has good structural versatility and compatibility, thereby improving the delivery capability of enterprises. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 yes Figure 1 A schematic diagram of a structure for removing the tail cap;

[0018] Figure 3 yes Figure 2 A schematic diagram of a structure for removing a lead seal;

[0019] Figure 4 yes Figure 3 A schematic diagram of a structure for removing the casing;

[0020] Figure 5 This is a schematic diagram of a PCBA structure in this utility model;

[0021] Figure 6 This is a cross-sectional view of the internal structure of this utility model;

[0022] In the diagram: 1. Bottom shell, 2. Cover shell, 3. Tail cap, 4. End button box, 5. Lead seal cap, 6. Outer skirt, 7. Display button, 8. Programming button, 9. Lead seal screw, 10. PCBA, 11. Shunt, 12. Neutral wire connection piece. Detailed Implementation

[0023] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0024] Example: Figures 1-6As shown, the structure of an electricity meter and terminal includes a base shell 1, a PCBA 10 installed inside the base shell, a terminal box 4 installed at the bottom of the base shell, a cover shell 2 installed outside the base shell, and a tail cover 3 installed at the bottom of the base shell, which is fitted onto the outside of the terminal box. The base shell and the cover shell are fitted together with outer skirts 6 on both sides and ultrasonically welded. The upper sides of the base shell are fixedly connected to the cover shell by lead-sealing screws 9. A lead-sealing cap 5 is installed on the cover shell outside the screw mounting area. The fixing methods for the cover shell and base shell support screw locking, ultrasonic welding, and a combination of both. The sealing methods support lead sealing, lead-sealing caps, and a combination of both. Ultrasonic welding is performed by welding the outer edge of the shell. The plug-in components on the PCBA are installed at the bottom of the base shell, ensuring reliable welding and minimizing resonance between the energy wave and crystal oscillators, thus preventing damage to the pins of the plug-in components and crystal oscillators on the PCBA and improving the yield rate of the meter after ultrasonic welding. The connection between the cover shell and the base shell uses a special outer skirt design; after ultrasonic welding, prying it open will reveal obvious signs of damage that cannot be restored.

[0025] The lead seal cap is attached to the casing using a snap-on connection. Because of this snap-on design, removing the lead seal cap will leave obvious signs of damage, providing good protection against electricity theft.

[0026] Shunt 11 and neutral wire connector 12 are mounted on the bottom of the PCBA. The PCBA is rigidly connected to the shunt, neutral wire connector, and terminal blocks on the terminal box. The PCBA is wave-soldered to the shunt and neutral wire connector. Production and assembly are simple, with good manufacturability, low labor costs, and high efficiency.

[0027] The PCBA is assembled with snap-fit ​​components and secured within the base shell by ribs. The cover features a three-button design with two display buttons (7) and one programming button (8). Options of 1-button, 2-button, or 3-button configurations are available upon request.

[0028] The end cap and base shell are designed with an L-shape. A fixing boss is provided on the cover to prevent the meter from detaching during production and handling.

[0029] The end-cap screws inside the end-cap box feature an anti-loosening design to prevent them from falling out during production and on-site installation.

[0030] This utility model has a simple and reliable structure, good manufacturability, and low cost. It can be applied to both screw-type and ultrasonic welding connection methods, and is compatible with both wire-through lead seal and lead seal cap sealing methods. The PCBA and terminal connection adopts a hard link, which reduces the production cost and improves the production efficiency of enterprises. In addition, the structure has good versatility and compatibility, which improves the delivery capability of enterprises.

[0031] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A structure for an electricity meter and terminal, comprising a bottom housing, a PCBA installed inside the bottom housing, and a terminal box installed at the bottom of the bottom housing, characterized in that, A cover is installed on the outside of the bottom shell, and a tail cover is installed at the bottom of the bottom shell. The tail cover is sleeved on the outside of the end button box. The bottom shell and the cover are provided with outer skirts for engagement and are ultrasonically welded. The upper two sides of the bottom shell are fixedly connected to the cover by lead-sealing screws. A lead-sealing cap is installed on the cover outside the lead-sealing screw installation position.

2. The structure of an electricity meter and terminal according to claim 1, characterized in that, The lead seal cap is installed on the cover using a snap-on connection.

3. The structure of an electricity meter and terminal according to claim 1, characterized in that, The bottom of the PCBA is equipped with a shunt and a neutral wire connector.

4. The structure of an electricity meter and terminal according to claim 3, characterized in that, The PCBA is connected to the shunt, neutral wire connector and terminal block on the terminal box by hard link, and the PCBA is connected to the shunt and neutral wire connector by wave soldering.

5. The structure of an electricity meter and terminal according to claim 1, characterized in that, The PCBA is assembled with snap-fit ​​and fixed inside the bottom shell by ribs.

6. The structure of an electricity meter and terminal according to claim 1, characterized in that, The cover button adopts a three-button compatible design with two display buttons and one programming button.

7. The structure of an electricity meter and terminal according to claim 1, characterized in that, The end cap and bottom shell are designed in an L-shape.

8. The structure of an electricity meter and terminal according to claim 1, characterized in that, The cover is provided with a fixing boss.

9. The structure of an electricity meter and terminal according to claim 1, characterized in that, The end-button clamping screws inside the end-button box are designed to prevent loosening.

Images