Pneumatic unthreaded hole connector

The utility model discloses a pneumatic unthreaded hole connector, including cylinder body, support cover, sealing ring and axiform spare, the cylinder body has a recess and seted up first through -hole bottom the recess, axiform spare passes first through -hole, and to stretch out the cylinder body outer and lie in the one end and groove phase matching of the axiform spare of recess, and another pot head of axiform spare is equipped with the sealing ring, the second through -hole that vertically link up this axiform spare is seted up to axiform spare, being located the recess and having seted up the third through -hole with the one end that the groove phase matches of axiform spare to third through -hole one end communicates with each other with the external world, and the other end communicates with each other with the recess, support the ways to establish and lean on sealing ring and cylinder body and its both ends are supported respectively outside axiform spare. The utility model discloses a pneumatic un