| 主权项 |
1. A flow rate control device equipped with 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;
the flow rate adjustment indicating mechanism comprising: a main body portion; a displacement operating member disposed rotatably with respect to the main body portion and connected to the displacement member, and which causes displacement of the displacement member by a rotating operation of the displacement operating member; and a rotating member, which is formed in an annular shape having a hole through which the displacement operating member is inserted, the rotating member being arranged in the main body portion such that a center of rotation of the rotating member is offset with respect to an insertion position of the displacement operating member, and the displacement operating member comprising an engagement part that is engaged directly with the rotating member under rotation of the displacement operating member, wherein the rotating member has 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. |
