Female coupler connection structure

Abstract

A female coupler connection structure includes a main body having an internal plugging passage and a front engagement section with two diametrically opposite tangential slots communicable with the plugging passage; a retaining module fitted around the engagement section and including two pin members that pass through the tangential slots into the plugging passage to provide an actuation portion; a spring having two ends pressed against the retaining module and an annular locating groove formed around the engagement section; and a pulling cover fitted around the retaining module, which has a front end pressed against the pulling cover. A male coupler can be locked to or unlocked from the plugging passage by moving the pulling cover to swing the pin members. The female coupler connection structure requires a relatively short operating distance and can be advantageously used in a relatively narrow space to connect to or disconnect from the male coupler.