| 摘要 |
PROBLEM TO BE SOLVED: To reduce the load of an actuator which opens/closes first and second control valves while surely restricting the closing positions of the first and second control valves of a fluid control device. SOLUTION: When the first and second control valves 19, 20 for opening/closing an intake passage 15 and a bypass passage 17, respectively, are driven to be opened/closed in mutually opposite directions by a common actuator, the first and second control valves 19, 20 connected to each other via a link means 21 consisting of first and second levers 39, 40 are energized to be closed by first and second torsion springs 41, 43. The closing positions of the first and second control valves 19, 20 are thereby surely restricted by the resilient force of the first and second torsion springs 41, 43 as well as the resilient force of the first torsion springs 41 is counterbalanced with that of the second torsion spring 43 even when the fist and second control valves are opened/closed in any direction. This reduces the size of the actuator and the consumption of driving energy while avoiding an increase in the load of the actuator due to the provision of the first and second torsion springs 41, 43. COPYRIGHT: (C)2007,JPO&INPIT
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