Patent ID: 6463657
Filing Date: 2002-10-15
Classification: F16K,Y10T

Abstract:
A method of manufacturing a valve element adapted to be arranged in a solenoid valve to open and close a valve seat, comprising the steps of:providing a leaf spring including an outer peripheral ring section, a hub section having a central hole and one or more than one connection holes, and a plurality of radial arm sections for connecting between said outer peripheral ring section and said hub section; forming a ring-shaped outer peripheral seal by vulcanizing and molding a rubber material along said outer peripheral ring section; providing a resin-made valve disk with central anchoring hole to be fitted to one of the opposite surfaces of said hub section; providing a movable core having at an end thereof a flange section to be held in contact with the other surface of said hub section and arranged on said opposite surface of said hub section; providing a resin-made holder ring to be fitted onto said movable core; forming a valve seal by vulcanizing and molding a rubber material, said valve seal including a main body section to be fitted to a front surface of said valve disk and a holder section to be fitted to a rear surface of said valve disk; and arranging said valve disk on one of the surfaces of said hub section and said flange section onto the other surface of said hub section to make them contact with each other and ultrasonically welding said valve disk and said holder ring while holding said holder ring in engagement with said movable core and in contact with said valve disk; said movable core being thereby fitted to said leaf spring by means of said valve disk and said holder ring to be made integral with said valve disk.