| 摘要 |
PROBLEM TO BE SOLVED: To provide a valve mechanism capable of preventing deformation of a valve seat due to pressing from a valve body and friction.SOLUTION: A valve mechanism is arranged in a flow passage of a fluid, it has a valve body 16 for moving according to an operation of an operation member and a valve seat 15 having an opening formed in the flow passage, and when the valve body 16 comes into contact with the valve seat 15 without a gap, it comes into a valve closed state in which the opening is closed, and when a gap is generated between the valve body 16 and the valve seat 15, it comes into a valve open state in which the opening is opened. A lifter 19 is arranged on a path of the valve body 16, when shifting from the valve closed state to the valve open state or when shifting from the valve open state to the valve closed state, and at least in one state other than the valve closed state, by the lifter 19 being interposed between the valve body 16 and the valve seat 15, the state in which the valve body 16 does not touch the valve seat 15 at all is maintained.SELECTED DRAWING: Figure 6 |
