Structure of an electromagnetic valve for opening and closing a

Details Structure of an electromagnetic valve for opening and closing a Structure of an electromagnetic valve for opening and closing a

1987-12-01

1991-04-30

Cohan, Alan

Fluid handling

Systems

Multi-way valve unit

251282, 25112902, F16K 1104

Patent

active

050109235

ABSTRACT:
A structure of an electromagnetic valve for opening and closing a passage of a fluid flow which is applicable to a air suspension system of a vehicle. The electromagnetic valve includes a plunger linked with an armature, a first valve attached to the plunger for defining a first chamber and a second chamber in a body of the electromagnetic valve, together with a valve seating member installed within the body, a second valve attached to the plunger for opening and closing the fluid flow passage opened to the first chamber, and a spring for biasing the plunger in an open direction of the first valve and second valve, a second fluid flow passage being opened to the first chamber for introducing the fluid from the first fluid flow passage, a fluid pressure in the fluid passage being introduced to the second chamber via another passage, and an effective pressure applied area of the first valve (A2) being substantially equal to that (A1) of the second valve. A noise extinguishing projection in a substantially letter Y shape is installed on a valve seating portion of the valve seating member. In addition, the second valve is spirally engaged with the plunger and a spring receiving member for receiving one end of the spring functions as a lock nut of the second valve.

REFERENCES:
patent: 690979 (1902-01-01), Metz
patent: 2752941 (1956-07-01), Michell
patent: 2826215 (1958-03-01), Wolfslau
patent: 3679171 (1972-07-01), Baranowski
patent: 4187987 (1980-02-01), Raue
patent: 4314585 (1982-02-01), Nishimiya

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