Patent ID: 9728951
Date: 2017-08-08
CPC Classifications: H01H,H01R,H02H

Claim:
1. An improved leakage protection socket with reverse connection protection function, comprising: a housing; a pair of output conductors with conductive sleeves; a reset button, power input terminals; power output terminals; a pair of movable input contacts connected to the power input terminals; a pair of movable output contacts connected to the power output terminals; dual induction coils for detecting leakage current; and a circuit board; wherein a lock and an electromagnetic tripping mechanism are provided in the housing; the lock hooks and positions the reset button so that the movable input contacts are conductively connected to the output conductors; and the electromagnetic tripping mechanism separates the reset button from the lock in the event of leakage current; wherein the electromagnetic tripping mechanism comprises a trip coil, an iron core and a permanent magnet that fit with a return spring; the iron core has, in its front end, a boss to pull the lock for horizontal movement; and the movable input contacts are clamped by a rib slot of an upper tripper that can moves upward and downward along with the reset button; wherein a reverse connection trip device is provided in the housing, the reverse connection trip device having a slope that coordinates with the boss of the iron core; and the movable output contacts link with the reverse connection trip device and is conductively connected to the output conductors in a natural state; and wherein upon reverse connection, the trip coil generates a magnetic field in the same orientation with the permanent magnet, so that the iron core is attracted to the permanent magnet and the reverse connection device is driven to move down to conductively connect the movable input contacts with the output conductors and press the movable output contacts to separate from the output conductors.