Earth leakage protection socket with functions of sparking prevention and reverse connection protection

Abstract

The invention provides an earth leakage protection socket with functions of sparking prevention and reverse connection protection. The earth leakage protection socket comprises power input ends, power output ends, output conductors, a reset button and a circuit board. At least one pair of metal sheets are led out respectively from the power input ends, the power output ends and the output conductors, when a guide post of the reset button and a latch are fastened and positioned, the power input ends, and the power output ends and the output conductors are in contact conduction through the corresponding metal sheets led out. A combination metal sheet is arranged on the circuit board, and is provided with a connection pin connected with one of the power input ends, and is further provided with a discharging pin in clearance fit with the other power input end. A static contact end further extends from the combination metal sheet, and the static contact end matches with a dynamic metal sheet positioned below the static contact end to form a trip coil path switch. The earth leakage protection socket with functions of sparking prevention and reverse connection protection has the advantages that the combination metal sheet serves as both a discharging piece and a static contact piece of a simulation leakage current generation switch, and thus, die cost is saved and assembly process is simplified.

Description

technical field [0001] The invention relates to a leakage protection socket, in particular to a leakage protection socket with anti-sparking and reverse wiring protection. Background technique [0002] With the improvement of electricity safety, the leakage protection socket is more and more popular because it can trip and cut off the power in time when a leakage current occurs during use, such as the leakage protection socket disclosed in the patent application number 200820234024. Body, a pair of power input terminals, a pair of power output terminals, a pair of output conductors, a reset button and a circuit board. There is also a tripper linked with the reset button in the housing. The lock is positioned by the guide column hook, and the housing is also equipped with a tripping coil that generates a magnetic field to drive an iron core to hit the lock to separate the reset button guide column from the lock when the power is turned on, and a double induction coil for indu...

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Problems solved by technology

[0004] In addition, the leakage protection socket should also be equipped with a discharge mechanism to promptly release the instantaneous high voltage generated when encountering lightning strikes and other situations. For example, the leakage protection socket with the patent application number 201110270837.4 has the following problems in the above background technology: (1) There are too many devices and too dense, and the gap between them is small. For example, after only dozens of actions in the tens of thousands of volts discharge process, it is easy to discharge between the solder joints of electronic components without discharging through the discharge sheet and damage the circuit board. (2) The discharge piece, the moving piece and the static piece of the analog leakage current generation switch, the moving piece and the static piece of the access switch, the moving piece and the static piece of the test switch are all set independently, the mold cost is high, and the assembly process is complicated ; (3) When the release is forced, the lock is moved horizontally and at the same time it is driven by the inclined plane to make a lifting movement. The movement track is long, and the metal sheet drawn from the power input end and the output end need to go through a process of gradual separation, which is prone to sparking; (4) Each metal sheet is small in size, slow in heat dissipation, temperature rises, and the device is easy to be damaged

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