Push type locking structure for pipe couplers

A push type locking structure for pipe couplers, comprising:

• a coupling pipe having a first end and a second end and internally defining a passage;
• and the coupling pipe being provided on an outer surface at a position between the first and the second end with a recess having a pair of pipe pivotal holes located perpendicular to the recess, and on the outer surface at a position closer to the first end with a receiving hole that extends radially through the outer wall of the coupling pipe and communicates with the passage;
• a push member having a pair of first pivotal connection sections and a second pivotal connection section provided on a bottom side thereof;
• and the first pivotal connection sections respectively having a first pivotal hole provided thereon and the second pivotal connection section having a second pivotal hole provided thereon;
• a push retaining member defining an opening, and having a retaining pivotal hole provided at a top portion thereof;
• at least two shafts, one of which is extended through the first pivotal holes and the retaining pivotal hole and the other of which is extended through the second pivotal hole and the pipe pivotal holes, such that the push member is pivotally connected to the push retaining member and to the coupling pipe;
• and
• a spring located in the recess with two ends elastically pressed against the bottom of the recess and the bottom side of the push member;
• and
• wherein when the push member is pushed downward, the spring is elastically compressed and the push retaining member is lifted upward radially at the same time, such that the push retaining member no longer limits a pipe connected to the coupling pipe from moving axially and the pipe is unlocked from the coupling pipe.