A concealed-type metal conjunction box with a current monitor

Abstract

The invention discloses a concealed-type metal conjunction box with a current monitor. The concealed-type metal conjunction box with the current monitor is used for connecting a city power supply line and a switch socket. The concealed-type metal conjunction box comprises a metal box body and the current monitor. The four side surfaces and the bottom surface of the metal box body are all provided with several first wire-threading holes. The monitor comprises a housing movably installed on a side surface of the metal box body, a Hall current sensor penetrated through by the city power line, a current used for detecting the city power line, a transmitter connected with the Hall current sensor, an A / D converter connected with the transmitter, a one-chip microcomputer connected with the A / D converter, a drive circuit connected with the one-chip microcomputer and a relay connected between the city power line and the switch socket. The relay is also connected with the drive circuit and the drive circuit controls the switching-on and switching-off of the relay. The beneficial effects of the concealed-type metal conjunction box with the current monitor of the present invention are that: connection and disconnection of lines are controlled according to current changes of the city line in the metal box body, so that conductive wires in the metal box and electrical appliances connected to the switch socket are protected.

Description

technical field [0001] The invention relates to a junction box of electrical components, in particular to a concealed metal junction box with a current monitor. Background technique [0002] In the construction industry, junction boxes are mostly embedded in cast-in-place or prefabricated walls or floors to realize concealed wire connections or electrical switches or other components. However, when the line is in use, multiple electrical appliances will be used at the same time, which often causes the internal current of the line to be too large, so that the power of the internal wires in the junction box is too large, and the surface temperature of the wires increases sharply. Since there are multiple lines inside the junction box, the casing of the wires will melt when the temperature increases, short-circuiting the lines, causing an open flame to burn to the switch and the building, causing a house fire. When the current is too large, the electrical appliances connected ...

AI Technical Summary

Problems solved by technology

When the current is too large, it will also burn out the electrical appliances connected to the switch socket, which will cause a waste of resources

At the same time, when in use, buildings or other objects will squeeze the junction box, and the junction box is easily deformed, which will affect the wiring arrangement in the junction box, thus causing a short circuit of the line and an overcurrent phenomenon of the mains power line. It is very necessary to disconnect the mains power line in time so that the line inside the junction box is in an open state.

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