Electric meter plug

Abstract

The invention discloses a plug-in part for an electric meter, which comprises a base (1) and a cover plate (2). Corresponding radially expandable or radially shrinkable plugs (4), each terminal post (3) is connected to the corresponding plug (4), and the cover plate (2) is detachably fixed on the base (1) On the top surface, the base (1) and the cover plate (2) are provided with a drive mechanism that can make all the plugs (4) expand radially or shrink radially at the same time. The electric meter plug-in part saves labor and time in assembly, is convenient to replace, has good connection strength, and eliminates potential safety hazards.

Description

Technical field: [0001] The invention relates to the technical field of electric meters, in particular to an electric meter plug. Background technique: [0002] The electric meter in the electric meter box needs to be connected with the circuit breaker. At present, most wires are used to connect the two ends separately, that is, the screws are respectively tightened and then compressed. This makes the assembly more complicated, and when tightening the screws, it is impossible to ensure that each Whether the screws are completely compressed on the wires requires checking the connection strength one by one after assembly, which makes the manufacturer labor-intensive and time-consuming during assembly, and it is extremely inconvenient to operate when replacing in the later stage. In addition, there are plugs that use springs and pin shafts. The pin shafts are inserted into the jacks of the meter through the springs. Although the installation is convenient, the service life of t...

AI Technical Summary

Problems solved by technology

[0002] The ammeter in the ammeter box needs to be connected to the circuit breaker. At present, most of them use wires to connect the two ends separately, that is, to tighten and then compress the screws separately, which makes the assembly more complicated, and when tightening the screws, it is impossible to ensure that each Whether the screws are completely pressed against the wires, the connection strength needs to be checked one by one after assembly, which makes the manufacturer labor-intensive and time-consuming during assembly, and it is extremely inconvenient to operate when replacing in the later stage

In addition, there are plugs using springs and pin shafts. The pin shafts are inserted into the jacks of the meter through the springs. Although the installation is convenient, the service life of the springs is relatively short, generally only 2 or 3 years. When the elasticity does not meet the requirements for use , causing the connection strength between the plug and the jack to drop. If the plug and the jack are not fully connected to the bottom, that is, there is only partial contact. In this way, when the power is turned on, because the contact area is small and the heat is large, the plug will be melted and short-circuited, making the entire meter The box cannot be used normally, and there is a certain potential safety hazard

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