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    • 11. 发明授权
    • Servo driving pilot-type solenoid valve
    • 伺服驱动先导式电磁阀
    • US06325102B1
    • 2001-12-04
    • US09545457
    • 2000-04-07
    • Keiji MisumiMakoto Ishikawa
    • Keiji MisumiMakoto Ishikawa
    • F15B13043
    • F15B13/0402F15B11/0365F15B13/0431F15B2211/30525F15B2211/355Y10T137/86614Y10T137/8663
    • A pilot-type solenoid valve capable of driving a valve member by increasing a pilot fluid pressure from a pilot valve and reliably switching valve member. The pilot-type solenoid valve includes a main valve portion having a valve member capable of sliding in a valve hole to which ports P, A, B, EA and EB in a valve body are opened, a pilot driving mechanism for applying a pilot fluid pressure to a pushing member which pushes one end of the valve member, and a returning mechanism for applying a returning force to the valve member. The pushing member includes a first piston for applying the pilot fluid pressure, and a second piston which is pushed by the first piston and which pushes the valve member. A shaft of the first piston passes through a partition wall in a sealing manner and abuts against the second piston. The shaft is provided therein with a guide hole for guiding the pilot fluid pressure to a pressure chamber of the second piston.
    • 一种先导式电磁阀,其能够通过增加来自先导阀的先导流体压力和可靠地切换阀构件来驱动阀构件。 先导式电磁阀包括主阀部分,其具有能够在阀体中的端口P,A,B,EA和EB打开的阀孔中滑动的阀构件,用于施加先导流体的先导驱动机构 推压构件的压力推动阀构件的一端,以及用于向阀构件施加返回力的返回机构。 推动构件包括用于施加先导流体压力的第一活塞和由第一活塞推动并推动阀构件的第二活塞。 第一活塞的轴以密封方式穿过分隔壁并抵靠第二活塞。 轴在其中设置有用于将先导流体压力引导到第二活塞的压力室的引导孔。