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Automatic open-circuit method for supernormal heat generation of connector

A technology of connectors and self-disconnection, which is applied to the components, circuits, and connections of connecting devices, and can solve the problems of high cost, unreliability, and loss of elasticity of precious metals

Inactive Publication Date: 2017-07-14
陈展天
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the additional spring will lose its elasticity when heated, and the cost of using precious metals is too high, and it is not reliable

Method used

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  • Automatic open-circuit method for supernormal heat generation of connector
  • Automatic open-circuit method for supernormal heat generation of connector

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0008] figure 1 It is a schematic diagram of the self-breaking circuit structure of the electric plug with abnormal heating. In the figure, 1 is the wall of the plug shell as an insulating member, 2 is the ground wire insert (that is, the ground wire metal insert), 3 is the wiring of the thermal switch circuit, 4 is the plug base plate as the insulating member, and 5 is the power supply insert (That is, the two power supply metal inserts correspondingly distributed on the left and right, such as single-phase plugs, one is live wire and the other is neutral wire), 6 is the insert seat, 7 is the fixing screw of the insert seat, 8 is the power connection screw, 9 is a power cord, 10 is an outer soft wire of a plug, 11 is another power cord, 12 is a ground wire, D1 and D2 are diodes, R1 and R2 are current-limiting resistors, and K is a thermal switch. The power supply plug 5 and the ground wire plug 2 are integrated with the plug seats on their respective sides, the plug seats ar...

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Abstract

The invention relates to a self-cutting circuit method for abnormal heat generation of connectors, which comprises an insulating casing of a connector for power wires, and metal connectors and plugs electrically connected with the power wires are fixedly connected in the insulating casing. There is a normally open thermal switch on the edge of the metal connector and the plug-in. One end of the thermal switch passes through a current limiting resistor, and a current drain diode can be connected in series to connect to the phase line of the power supply, and the other end is grounded. A leakage protector is installed to control the line. In this way, if the electrical contact of the plug and socket is poor, the contact resistance will increase, resulting in heating at the contact point. , causing a small part of the current to flow into the ground wire through the current limiting resistor, so that the current value of the incoming and outgoing lines in the leakage protector controlling the line is out of balance, the leakage protector will trip, the power supply will be disconnected, and the line will stop supplying power to the electrical appliances , so as to prevent the occurrence of electric fire.

Description

technical field [0001] The invention belongs to the field of electrical installation, in particular to a self-breaking method for a connector with abnormal heat generation. Background technique [0002] The so-called connector and plug-in refer to the connector and plug-in of the power supply. The connector mainly refers to the power socket, and the plug-in mainly refers to the power plug. If the contact resistance is poor during the period, it will generate heat, which rises slowly and silently, so it is difficult to find out. It is not like the short circuit of the wire that will cause the air switch to act, and often does not produce a short circuit at the beginning. It's just that the metal connectors, inserts and the plastic parts around them and the air in the box generate abnormal heat, and finally ignite the plastics, especially the movable plug boards (that is, sockets) are often connected to high-power electrical appliances, and the plug-in wires The current of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R13/66H01R13/713
CPCH01R13/665H01R13/7137
Inventor 陈展天陈宜中
Owner 陈展天
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