Valve device having a rotating support member for converting rotational displacement into linear displacement of a valve
AssigneeFujikin Incorporated
InventorsHisatoshi Akamoto, Yuya Suzuki
Life of this patent
Estimating the term…
Abstract
A valve device which improves the operability of a valve for opening and closing a flow path. The valve device includes a valve, an actuator, an actuator support member, an operating portion, and a threaded member wherein the valve is able to open and close a fluid path in a valve body having a fluid inflow passage and a fluid outflow passage. The actuator displaces the valve between an open position and a closed position. The actuator support member operatively supports the actuator so that the actuator is able to be driven. The operating portion drives the actuator. The threaded member is threadedly engaged with the actuator.
Claims11
A valve device comprising:
- a valve,
- an operating portion,
- an actuator,
- an actuator support member, and
- a threaded member;
- wherein the valve is able to open and close a fluid path in a valve body having a fluid inflow passage and a fluid outflow passage,
- wherein the operating portion drives the actuator,
- wherein the actuator contains a rotating portion which is able to rotate in response to operation of the operating portion and has a male thread formed on an outer peripheral surface thereof, a rotating support member that holds the rotating portion and converts the rotational displacement of the rotating portion into a linear back-and-forth displacement of the valve, wherein the converted linear back-and-forth displacement is transmitted to the valve to displace the valve between an open position and a closed position,
- wherein the threaded member is provided with a female thread on an inner peripheral surface thereof such that the female thread is threadedly engaged with the male thread of the rotating portion, and
- wherein the actuator support member has a step which is in contact with one end of the threaded member in an axial direction, and wherein a lock nut is arranged at an opposite end of the threaded member in the axial direction, thereby supporting the threaded member in such a manner that the threaded member is arranged in the actuator support member and is immovable in the axial direction of the rotating portion.
Dependencies are inferred from the claim text.