Patent ID: 9746102
Date: 2017-08-29
CPC Classifications: F16K

Claim:
1. A fluid control valve comprising a diaphragm structure, and an actuator that presses the diaphragm structure, wherein the diaphragm structure comprises: a protruding part that is formed in a tubular shape with a closed fore end and pressed by the actuator at least in an axial direction thereof; a brim part that spreads from a base end of the protruding part outward with respect to the protruding part; a support part that is formed on an outer circumference of the brim part and attached to another member; a valve seat member that is formed with a valve seat surface; and a valve element member that has a seating surface that is brought into contact with or separated from the valve seat surface, wherein the fore end of the protruding part is configured to press the valve element member, the brim part is formed as a film in a flat or slanted annular disk shape, the base end of the protruding part is formed as a curved shape, and the diaphragm structure has a uniform thickness.