Vacuum sucker joint

The utility model discloses a vacuum type sucker connector. Fixing plate, symmetrical through holes are formed in the fixed plate; a metal column is arranged in the through hole; the metal column is sleeved with a sealing ring. The sealing ring is fixed in the through hole; a circle of rubber suckers are fixed on the edge of the fixed plate; a metal connecting sheet is fixed at one end of the metal column positioned in the rubber sucking disc; the method comprises the following steps: connecting two metal columns with test leads of a test instrument respectively; then, the fixed plate is pressed on the tested equipment; the metal connecting sheets of the two metal columns are respectively contacted with two connector lugs of tested equipment; therefore, the high-voltage test of the connector lug in the narrow and small space of the fixed switch cabinet is realized. Because the test lead is connected to the metal column in advance, only the fixed plate needs to be pressed in the narrowand long space of the swi