High-speed closing device and switchgear including high-speed closing device

A high-speed closing device comprising:

• a first fixed contactor which is made from a conductive material;
• a second fixed contactor which is made from a conductive material, and is arranged to face the first fixed contactor;
• a movable contactor, of which a tip is made from a conductive material, which includes a hollow hole, in which an opposite side of the tip is opened, at an inner portion, and is separated from the first fixed contactor and the second fixed contactor with a distance being longer than an insulation distance so as to be arranged before the high-speed closing device is closed, and the tip is inserted between the first fixed contactor and the second fixed contactor after the high-speed closing device is closed, and electrically connects the first fixed contactor and the second fixed contactor;
• a vacuum case having a vacuum portion and an aerial room, the vacuum portion is maintained in a decompression state;
• and
• a diaphragm, by which airtightness of the vacuum portion and the aerial room is maintained in a closing direction of the movable contactor,
• wherein the first fixed contactor and the second fixed contactor and the movable contactor are arranged in the vacuum case, and
• wherein the movable contactor is inserted between the first fixed contactor and the second fixed contactor by a buckling operation of the diaphragm, and electrically connects the first fixed contactor and the second fixed contactor.