| 摘要 |
PROBLEM TO BE SOLVED: To actuate a plurality of servo valves synchronously. SOLUTION: A valve part 18 is divided into one valve half part 19 and the other valve half part 25 to be one set of the valve, and two sets of the valve parts 18, 18 are provided in parallel. Synchronous plates 10, 11 are coupled to a supporting shaft 6 of a torque motor part 2. A plunger 23 of one valve half part 19 is made to normally about on the synchronous plate 10, and a plunger 29 of the other valve half plunger 25 is made to normally abut on the synchronous plate 11. When the torque motor part 2 is actuated, the supporting shaft 6 is rotated integrally with an armature 4, and the synchronous plates 10, 11 and a flapper 14 rock following rotations of the supporting shaft 6. The distance between the flapper 14 and a nozzle 15 is changed, and a difference is caused between the back pressures of both nozzles 15, 15, so that pistons 22, 28 are moved. The synchronous plates 10, 11 regularly about one the plungers 23, 29 of the valve half portions 19, 25, so that both valve portions 18, 18 are actuated while perfectly synchronizing.
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