| 摘要 |
PROBLEM TO BE SOLVED: To provide a flow rate control valve capable of increasing a stroke of a valve head. SOLUTION: This flow rate control valve 30A is provided with a piezoelectric actuator 52 and a displacement amount amplifying mechanism 54 amplifying a displacement amount La of the piezoelectric actuator 52. The amplified displacement amount Lb amplified by the displacement amount amplifying mechanism 54 is transmitted to a valve head 48, which adjusts a flow rate of fluid passing through a communicating passage 46 communicating between a flow-in passage 40 and a flow-out passage 42 in a valve body 44. The displacement amount amplifying mechanism 54 is provided with an input part 80 and an output part 82 which are displaced along an axial line C and a displacement transmission part 74 which is rotated and displaced.
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