Patent ID: 8198964

Claim:
A sealed contact device comprising: a plate-like yoke having a center hole therein; a closed-ended cylinder having an opening edge portion that is integrated with a lower-surface edge portion of the center hole of the plate-like yoke to form a sealed space; an annular flange having an outer peripheral edge portion that is integrally welded to an upper surface of the plate-like yoke; a ceramic case having a lower end surface that is brazed to an upper surface of the annular flange; an electromagnetic unit disposed in an outer periphery of the closed-ended cylinder; a movable iron core that reciprocates in the closed-ended cylinder based on excitation and demagnetization of the electromagnetic unit; a movable shaft having a first end fixed to the movable iron core; a movable contact of a movable touch piece fixed to a second end of the movable shaft; a fixed contact disposed in the ceramic case; and an annular rib projected in the upper surface of the annular flange such that the brazed portion provided in the lower end surface of the ceramic case is covered from an inside with the annular rib, wherein the movable contact is brought into contact with and separated from the fixed contact by reciprocating the movable shaft.