Patent ID: 9523444
Filing Date: 2016-12-20
CPC Classification: F16K,Y10T

Claim Text:
1. A flow rate control device comprising: a housing; a flow passage disposed in an interior of the housing and through which a fluid can flow; a displacement member, which, by displacement thereof with respect to the flow passage, is capable of controlling a flow rate of the fluid that flows therethrough; and a flow rate adjustment indicating mechanism that operates displacement of the displacement member, wherein the flow rate adjustment indicating mechanism includes the displacement operating member includes an engagement part that is engaged directly with the rotating member under rotation of the displacement operating member, the rotating member includes an indicating section by which a change in the flow rate of the fluid is indicated along a circumferential direction thereof, and the indicating section is displaced in the circumferential direction by engagement with the engagement part, whereby a position of the indicating section is changed, plural inscribed teeth are formed along a circumferential direction on an inner circumferential surface of the rotating member that constitutes the hole, on an outer circumferential surface of the displacement operating member, there are arranged side-by-side along a circumferential direction a meshing portion, which is enmeshed with the inscribed teeth and serves as the engagement part, and an idling portion, which is not enmeshed with the inscribed teeth, a rotation regulating mechanism, which is capable of regulating rotation of the rotating member in a condition in which the idling portion of the displacement operating member is arranged in confronting relation to the inscribed teeth, is disposed on the main body portion, and the rotation regulating mechanism is provided continuously within the main body portion, and comprises an elastic regulating member that abuts against the inscribed teeth and elastically presses the rotating member.