Patent ID: 7199686

Claim:
An oil-immersed and high-pressure tripping switch structure, comprising an operational apparatus and an arc-extinguishing cylinder wherein the arc-extinguishing cylinder has a fixed contact point fitted at the center of the upper section thereon, and a movable contact point can be guided through the center of the arc-extinguishing cylinder to reciprocally operate with the fixed contact point disposed at the top thereon; the movable contact point is connected to one lateral edge of a movable contact point crank of the operational apparatus having an operation handle attached at one lateral side thereon; the present invention being characterized by that, the rear section of the operational handle thereof is coupled to one end of a linkage rotating rod having the other end thereof connected to a rotary shaft; the rotary shaft has an indented groove disposed thereon to be engaged with one end of a spring rotary arm having one end of a main spring hooked to the middle section thereon; the other end of the spring rotary arm is movably fitted to a main support bracket of the operational apparatus thereof, and a rotatable rebound pivoting-point support is also mounted to the main support bracket thereof; the rebound pivoting-point support has a spring rebound pivoting-point disposed at one lateral edge thereon, to which the movable contact point crank is secured; an actuating trip trigger is connected to one side of the rebound pivoting-point support in a linkage mechanism therewith, and opposite to the trip trigger is disposed an over-current magnetic tripping device and an over-current sensory device that are reciprocally attracted to each other and applied to actuate the trip trigger thereby; the other end of the main spring is attached to the middle section of the movable contact point crank, and the movable contact point is fixed to the other end of the movable contact point crank to cooperatively operate with the arc-extinguishing cylinder thereof; by the displacement of the spring rebound pivoting-point, the contact points thereof can be speedily closed or released, and when the switch is tripped/off, the operational handle will be changed in angle, obviously indicating the interior tripped/off status of the switch thereby; the arc-extinguishing cylinder has vaporized-oil discharging orifices distributed on four sides at the upper surface thereon, and inside the arc-extinguishing cylinder is sequentially arranged from top to bottom a spray-type arc-interrupting chamber, and a side-blowing arc-quenching mechanism equipped with a gas-emitting channel and a side-blowing arc-interrupting chamber; therefore, when fault current is detected to pass there-through, the operational apparatus will actuate the movable contact point to detach from the fixed contact point and generate an electrical arc thereby; the expanded vaporized-oil is then sent forth upwards via the discharging orifices or/and expelled sideways from the gas-emitting channel so as to quench the electrical arc in a complex arc-interruption mechanism thereof.