| 摘要 |
PROBLEM TO BE SOLVED: To provide a flow control valve that suppresses an increase in the sliding resistance of a valve body, and also has improved durability of a seal member.SOLUTION: The flow regulating valve comprises a valve body provided inside a valve housing and mounted on a valve shaft 3 that advances and retreats by a motor, and a guide member 4 for guiding a valve shaft such that the valve shaft advances and retreats, the valve shaft being fixed inside the valve housing and penetrating through the guide member. The valve body is provided with a cylindrical part 50 which protrudes to the rear end side of the valve shaft, and the inner peripheral surface 51 of which is slidably fitted to the outer peripheral surface of the guide member via a seal member 38 coated with lubricating oil. The flow regulating valve is provided with a valve port inside the valve housing, and is configured to regulate the flow rate of fluid passing through the valve port with the valve body advancing and retreating relative to the valve port while the inner peripheral surface of the cylindrical part slides on the outer peripheral surface of the guide member via the seal member. The flow regulating valve is provided with a seal member compressing section 60 that is formed on the inner peripheral surface of the cylindrical part or the outer peripheral surface of the guide member and for setting a larger squeeze A with the valve port being in an opened state than a squeeze of the seal member with the valve port being in a closed state. |
