Patent ID: 6892761

Claim:
A hot/cold water inlet and outlet structure for a ceramic core shaft of a single handled faucet, comprising a valve housing, a switch valve set, a valve mount, an upper switch valve, a lower switch valve, and a sealing ring wherein the valve housing has a valve chamber disposed at the interior thereof for the switch valve set and the valve mount thereof to be adapted therein respectively; the present invention being characterized by that, the switch valve set being made up of a control stick seat with a turning protruded block disposed at the upper section thereof, a support seat with a turning cut area disposed beneath the control stick seat thereof, and a switch valve disposed at the bottom thereof correspondingly matched to the valve mount thereof; the upper switch valve having a regulating recess defined at the bottom thereof; the lower switch valve having a pair of arc hot/cold water inlet holes and a water outlet hole disposed thereon, correspondingly matched to arc hot/cold water inlet passages and a water outlet passage of the valve mount thereof wherein the periphery of the arc hot/cold water inlet holes and the water outlet hole thereof are defined by indented groove seats respectively, correspondingly matched to higher protruded walls defining the arc hot/cold water inlet passages and the water outlet passage of the valve mount thereof respectively; the higher protruded walls thereof being further circumscribed by a lower stop wall extending upwards at the outside thereof to form a channel groove therein for the sealing ring of the same shape to be adapted therein; whereby, the lower switch valve is applied onto the valve mount with the hot/cold water inlet holes and water outlet hole thereof overlapping on top of the hot/cold water inlet passages and the water outlet passage thereof respectively, and the indented groove seats thereof securely joined to the higher protruded walls thereof in sealing engagement, further pressing downwards the sealing ring to be securely adapted at the channel groove of the valve mount so as to effectively prevent the leakage of water in use and ensure the precise engagement of the lower switch valve with the valve mount thereof.