Abstract: A metal housing grounding mechanism comprises a housing, a circuit board inside the housing; a connector is on one side of the circuit board. Two metal boards are on top and bottom of the connector; one of the metal boards is connected to ground. A spring tongue is on both ends of the two metal boards. The spring tongues of one metal board and the spring tongues of the other metal board brace together. Therefore the two metal boards are connected and conducted together for better shield against electromagnetic wave and static electricity.

Abstract: A connector interference prevention grounding mechanism comprises a circuit board with a connector on one side. The connector has a plurality of slots, each slot contains a sleeve internally. One metal board each is on top and bottom of the connector. Internal to the side slots on both end of the connector has a grounding sleeve. A C-shaped spring tongue is in the middle of the grounding sleeve. A convex point is on the bottom of the metal board and beneath the C-shaped spring tongue. Therefore by the C-shaped spring tongue of the grounding sleeve contacting the convex point of the metal board, the grounding sleeve also connects to the circuitry of the circuit board so that the electromagnetic wave and static electricity absorbed by the metal board can be conducted to the circuit board through the grounding sleeve to eliminate the electromagnetic wave and static electricity.