Patent ID: 6824116
Filing Date: 2004-11-30
Classification: F16K

Abstract:
A valve structure of an infrared operated automatic water supplier, comprising a three-branch tube, a solenoid valve, and a pressure-balance switch unit wherein the three-branch lube has a water inlet, a water outlet, and an actuation opening disposed at the three sides respectively, and a projected tube flange protruding at the inner side of the actuation opening thereof, correspondingly matched to the water outlet thereof; the solenoid valve has an actuation groove disposed at the center therein for a sensory rod with a spring adapted therein to be engaged therewith wherein the sensory rod is provided with a water sealing block disposed at one end thereof, and a receiving groove disposed at the other end for the spring thereof to be retained therein; the solenoid valve also includes an externally threaded section defining at one end hereof, to which a sealing washer is adapted; the pressure-balance switch unit is made up of a membrane, an actuation ring plate, a sealing sleeve, a spring element, and a retaining mount; the present invention being characterized by that,the membrane, a plate embodiment of elastic rubber, having a retaining cavity indented at the top thereof for the spring element thereof to be retained therein, a coupling tube with a central through hole protruding at the center thereof to be engaged with a sleeve rod of the retaining mount thereof and abutted against a stop flange of the sleeve rod thereof for location thereby, a transverse U-shaped annular coupling groove disposed under the retaining cavity thereof, and a coupling through hole disposed at one side of the coupling tube thereof; the actuation ring plate having an upper and lower annular engaging plates disposed at the top and bottom sides thereof respectively, and an engaging tube protruding at one side of the upper engaging plate thereon to be adapted at the coupling through hole of the membrane therein; the scaling cap, made of elastic rubber material, having an annular cavity indented at the top thereof, a lower engaging groove defining the inner periphery of the annular cavity thereon, and a conic guide face protruding at the bottom thereof; the spring element being multi-turned into a conic shape with a probing pin extending downwards from the top thereof; the retaining mount, having an upper and a lower retaining spaces defining both top and bottom sides thereon respectively, being provided with an internally threaded hole at the upper retaining space, a central groove disposed at the inner side of the internally threaded hole thereof, and a pair of symmetrical through holes disposed at both sides of the central groove thereon; in assembly, the pressure-balance switch unit is adapted at the actuation opening of the three-branch tube therein with the membrane thereof correspondingly located on top of the projected tube flange thereof to form a first layer of sealing effect thereof, and the conic guide face of the sealing cap smoothly forced into the projected tube flange in abutting engagement therewith; sustained by the lower engaging plate of the actuation ring plate adapted at the inner side therein, the sealing cap is tightly abutted against the inner wall of the projected tube flange at the outer side thereof, forming a second layer of sealing design to achieve a more efficient sealing effect of the solenoid water valve structure thereof.