Electromagnetic contactor and electromagnetic contactor gas encapsulating method

An electromagnetic contactor, comprising:

• a base plate having an aperture hole;
• a tub-shaped arc extinguishing chamber in which one end thereof is open, including a fixed terminal penetrating and fixed to a wall surface, the fixed terminal having a vent portion obliquely extending therethrough, and a pipe obliquely inserted from outside the wall surface and connecting the vent portion to form a portion communicating between a portion outside the wall surface of the fixed terminal and a portion inside the wall surface of the fixed terminal;
• and
• a bottomed tubular cap in which one end thereof is open, wherein an arc extinguishing chamber connection portion is formed by the arc extinguishing chamber and a first connection member having a tube portion in which one end thereof close contacts with and is connected to an open end surface of the arc extinguishing chamber and a flange portion linked to the other end of the tube portion and closely contacting with the base plate,
• a cap connection portion is formed by the cap and a second connection member having a tube portion in which one end thereof close contacts with and is connected to an open end surface of the cap and a flange portion linked to the other end of the tube portion and closely contacting the base plate, and
• the flange portion of the first connection member of the arc extinguishing chamber connection portion is attached to one surface of the base plate, and the flange portion of the second connection member of the cap connection portion is attached to the other surface of the base plate, so that the arc extinguishing chamber connection portion and the cap connection portion are in communication through the aperture hole of the base plate.