TRIPLE ACTION PRESSURE SWITCH

摘要

A triple action pressure switch has a switch driving unit which includes a first pressure sensing disc, a first pivot base having an upper surface holding the first pressure sensing disc, a center hole, and a protruding rod and a flat step which are formed at a lower surface thereof, a second pressure sensing disc having a rod hole through which the protruding rod passes and an upper surface contacting the flat step, a second pivot base having an upper surface holding the second pressure sensing disc and a rod hole through which the protruding rod passes, a third pivot base having a protruding portion formed at both ends of an outer circumference of an upper surface thereof, an upper surface contacting a lower surface of the second pivot base, and a circular protrusion and a shoulder step which are formed at the lower surface thereof, a third pressure sensing disc having a circumference hole through which the circular protrusion passes and an upper surface contacting the shoulder step, and a guide pin having an upper end contacting the lower surface of the first pressure sensing disc and passing through the center hole of the first pivot base.