Contactor magnetic core, contactor electromagnetic assembly and contactor

A contactor electromagnetic assembly, comprising:

• a magnetic yoke that is U-shaped;
• a magnetic plate installed on a top opening of the magnetic yoke;
• a coil assembly installed in the magnetic yoke and including a coil skeleton and a coil wound around the coil skeleton;
• and
• a contactor magnetic core, including:
• a static magnetic core fixed to the magnetic plate and having a main body inserted into the coil skeleton;
• and
• a movable magnetic core inserted into the coil skeleton in a movable manner and having a flange at an upper end, when the static magnetic core and the movable magnetic core are inserted into the coil skeleton, the main body of the static magnetic core faces the flange of the movable magnetic core, a diameter of the main body of the static magnetic core is larger than a diameter of the flange of the movable magnetic core to increase an electromagnetic attraction between the static magnetic core and the movable magnetic core.

A contactor, comprising:

• a housing formed with an arc extinguishing chamber and a receiving chamber;
• a pair of static contacts fixed to the housing and extending into the arc extinguishing chamber;
• a movable contact set in the arc extinguishing chamber, the movable contact set is movable between an open position electrically separated from the pair of static contacts and a closed position electrically in contact with the pair of static contacts;
• and
• a contactor electromagnetic assembly installed in the receiving chamber of the housing, the contactor electromagnetic assembly includes:
• a magnetic yoke that is U-shaped;
• a magnetic plate installed on a top opening of the magnetic yoke;
• a coil assembly installed in the magnetic yoke and including a coil skeleton and a coil wound around the coil skeleton;
• and
• a contactor magnetic core, including:
• a static magnetic core fixed to the magnetic plate and having a main body inserted into the coil skeleton;
• and
• a movable magnetic core inserted into the coil skeleton in a movable manner and having a flange at an upper end, when the static magnetic core and the movable magnetic core are inserted into the coil skeleton, the main body of the static magnetic core faces the flange of the movable magnetic core, a diameter of the main body of the static magnetic core is larger than a diameter of the flange of the movable magnetic core to increase an electromagnetic attraction between the static magnetic core and the movable magnetic core.