Patent ID: 8881770

Claim:
A quick connector having a check device, comprising: an inner body, the inner body having a protrusion at one end thereof and an opening next to the protrusion, the protrusion being connected with a membrane member, the membrane member having a through hole for insertion of the protrusion, the membrane member further having a membrane sheet, the membrane sheet being adapted to cover the opening; and further comprising an outer body, a locking member, an engaging ring and an outer locking member; the outer body having a passage therein, the passage having an L shape, two ends of the passage being a first connection opening and a second connection opening, the outer body having an annular groove close to an outer edge of the first connection opening; the locking member having a space therein and a locking block in the space, the locking member further having a stop ring at an inner edge of the space; the engaging ring being disposed in the annular groove of the outer body; the inner body having a threaded portion and a groove on an outer wall thereof, an oil seal being provided in the groove, another end of the inner body being connected with a connection pipe; the outer locking member being a hollow member, the outer locking member having an inner threaded portion at one end thereof and a locking recess on an outer wall thereof, the locking recess having an L shape, the locking recess being provided with a plurality of stoppers at two inner sides of the locking recess, another end of the outer locking member having a sleeve.