ELECTROMAGNETIC CONTACTOR, ELECTROMAGNETIC CONTACTOR GAS ENCAPSULATING METHOD, AND ELECTROMAGNETIC CONTACTOR MANUFACTURING METHOD

摘要

There is provided an electromagnetic contactor, electromagnetic contactor gas encapsulating method, and electromagnetic contactor manufacturing method at a low cost and with stable quality by simplifying a gas encapsulating step. The electromagnetic contactor includes a base plate (7) having an aperture hole, a tub-like arc extinguishing chamber (1), of which one end is opened, having a fixed terminal (2) and pipe (3) penetrating and fixed to a wall surface, and a bottomed tubular cap (8). An arc extinguishing chamber connection portion (6) is formed of the arc extinguishing chamber (1) and a first connection member (4) having a tube portion (4a) of which one end is in close contact with, and connected to, the opened end surface of the arc extinguishing chamber and a flange portion (4b), linked to the other end of the tube portion, that can be brought into close contact with the base plate. A cap connection portion (12) is formed of the cap (8) and a second connection member (5) having a tube portion (5a) of which one end is in close contact with, and connected to, the opened end surface of the cap and a flange portion (5b), linked to the other end of the tube portion, that can be brought into close contact with the base plate. The arc extinguishing chamber connection portion (6) and cap connection portion (12) are attached so as to be in communication via the aperture hole of the base plate (7).