Patent ID: 7387725

Claim:
A one-touch fitting type adapter for detachably engaging a filter assembly provided at one end thereof with a cylindrical fluid passage having a collar flange, the one-touch fitting type adapter comprising: an adapter body formed at both upper sides thereof with an inlet port and an outlet port and formed at a center thereof with a central channel communicated with the inlet and outlet ports; a valve installed in the central channel so as to adjust inflow or cutoff of source water flowing through the inlet port; an upper cover for covering an upper portion of the central channel; a lower cover installed at a lower portion of the adapter body and formed with a central hole communicated with the central channel of the adapter body, the cylindrical fluid passage of the filter assembly being inserted into the central hole of the lower cover; a pair of slide plates installed on the lower cover, the slide plates having opposite inclined elongate holes and opposite arcuate sections for detachably coupling the collar flange formed at the cylindrical fluid passage of the filter assembly, the slide plates being elastically biased towards each other by means of a spring; and a release button unit including two parallel bars formed with protrusions inserted into the inclined elongate holes, respectively, and one horizontal push bar connecting ends of the parallel bars to each other, wherein, when the filter assembly is disassembled from the adapter, the horizontal push bar is pushed, so the parallel bars move in a forward direction while pushing sidewalls of the inclined elongated holes so that the slide plates horizontally move perpendicularly to a moving direction of the protrusions away from each other, thereby allowing the filter assembly to be disassembled from the adapter.