Patent ID: 8256740

Claim:
A connection mechanism for fluid pipings, for connecting a plurality of the fluid pipings to flow a fluid, comprising: a first component provided to one side of the plurality of the fluid pipings and including a movable portion constituting a part of a pressure control valve and operated by a differential pressure; a second component provided to another side of the plurality of the fluid pipings and including an opening and closing mechanism which is opened and closed by an operation of the movable portion constituting the part of the pressure control valve; and a transmission mechanism provided to at least one of the first component and the second component, wherein: the opening and closing mechanism comprises a valve seat portion, a valve body portion, and a support portion for supporting the valve body portion; the support portion supports the valve body portion so that the valve body portion and the valve seat portion can be opened and closed with respect to each other according to the operation of the movable portion, which is transmitted by the transmission mechanism; the support portion for supporting the valve body portion is made of an elastic body, which is provided on a plane perpendicular to an operation direction of the transmission mechanism and including the valve body portion, for supporting the valve body portion; one of the movable portion and the opening and closing mechanism is separated from the transmission mechanism; and the plurality of the fluid pipings provided with the first component and the plurality of the fluid pipings provided with the second component are connected to each other, thereby constituting, in a part where the plurality of the fluid pipings are connected to each other, the pressure control valve for transmitting the operation of the movable portion to the opening and closing mechanism through the transmission mechanism.