The utility model relates to an electric connector separating mechanism that acts as go -between, including the head capsule body, the connection cap has been cup jointed to the external side of head capsule, and the head of the head capsule body is equipped with protruding key of round and cyclic annular draw -in groove, and head capsule body head cover has many lamellas half -nut, many lamellas half -nut includes the nut piece that many lamellas are equallyd divide by whole ring of nut, and the afterbody of each nut piece is equipped with the trip towards the axis, and trip joint axial in the draw -in groove is spacing, recess that the concatenation of adjacent nut piece laterally formed the time, and recess and the cooperation of protruding key form rotates spacingly, and many lamellas half -nut is radially spacing within a definite time with the intermediate layer of being connected the cap in the head capsule body, the middle part of connecting the inner wall of cap is equipped with the radial step of round, and the right side of step is equipped with in proper order cup joints in elastic mechanism, the ratchet of the head capsule body, prevents jumping circle and pull ring, the elastic mechanism axial compression is between step and ratchet, ratchet and the external wall spline fit of head capsule, the pull ring is through the retaining ring with to be connected the cap axial spacing.