Patent ID: 8902028

Claim:
An electromagnetic contactor, comprising: a tub-shaped arc extinguishing chamber including a fixed terminal support insulating substrate and a cylinder portion, the fixed terminal support insulating substrate having a fixed terminal and a pipe, each penetrating therethrough and being fixed thereto, and a metalized outer peripheral edge portion on one surface thereof, and the cylinder portion having one end closely contacting with and connected to the metalized outer peripheral edge portion, and a flange portion integrally formed therewith; an insulating tubular body disposed inside the cylinder portion, one end portion of the insulating tubular body closely contacting with and being connected to the metalized outer peripheral edge portion; an insulating bottom plate engaging the insulating tubular body to cover another end portion of the insulating tubular body inside the cylinder portion; a base plate having an aperture hole and supporting the insulating bottom plate, one surface of the base plate closely contacting with and being connected to the flange portion of the cylinder portion; and a bottomed tubular cap including one open portion, and a connection member integrally formed with the tubular cap and including a tube portion, and a flange extending outwardly from the tube portion, the flange portion closely contacting with and being connected to another surface of the base plate, wherein the pipe is directly fixed to the fixed terminal support insulating substrate without any intervening member, and the flange portion of the arc extinguishing chamber is attached to the one surface of the base plate, and the flange portion of the connection member of the cap is attached to the another surface of the base plate, so that the arc extinguishing chamber and the cap are in communication through the aperture hole of the base plate.