Anti blocking type sliding sleeve switch

The utility model discloses an anti blocking type sliding sleeve switch, including outer tube and interior inner sliding sleeve through the shearing pin nailed joint, inner sliding sleeve's upper end is equipped with catches the ball lock claw, and the inner wall epirelief of outer tube is equipped with the spacing step that encircles the upper end periphery catching the ball lock claw, is equipped with the fixed cone face that top -down leaned out gradually on the inner wall of spacing step to be equipped with on catching the periphery of ball lock claw upper end with the identical complemental sliding fit's of fixed cone face mantle face. The utility model discloses in on the spacing step the fixed cone face with catch the cone combined with that moves in the periphery of ball lock claw upper end for catching the ball lock claw and opening the in -process, the inclination guide that needs at the fixed cone face gone on down, and the dop that can avoid catching the ball lock claw like this appears 90 and tur