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1. 发明申请

US20120216896A1 SERVO VALVE 审中-公开
标题翻译：伺服阀
公开(公告)号：US20120216896A1
公开(公告)日：2012-08-30
申请号：US13057615
申请日：2009-05-29
申请人： Toshikazu Hayashi , Atsushi Yuge , Michiya Uchida , Makoto Kuga , Minobu Tsurutani , Taito Ogushi
发明人： Toshikazu Hayashi , Atsushi Yuge , Michiya Uchida , Makoto Kuga , Minobu Tsurutani , Taito Ogushi
IPC分类号： F15B13/043
CPC分类号： F15B13/0438 , Y10T137/86614 , Y10T137/8671
摘要： It is an object to provide a servo valve that can be manufactured at low cost by simplifying adjustment of the relative position between a nozzle and a flapper and simplifying the configuration of a valve-element driving circuit. Provided is a servo valve (1) including a spool (5) mounted so as to be movable back and forth; a first chamber (7) and a second chamber (9) that mutually push the spool (5) in opposite directions by means of fluid pressure; and a spool driving circuit (3) that supplies oil to the first chamber (7) and the second chamber (9) and that adjusts the pressure of supplied oil to move the spool (5) back and forth, wherein the spool driving circuit (3) maintains the fluid pressure of the first chamber (7) at a substantially constant level and includes, at an oil outlet of the second chamber (9), a nozzle flapper mechanism (27) that adjusts the fluid pressure of the second chamber (9).
摘要翻译：本发明的目的是提供一种可以通过简化喷嘴和挡板之间的相对位置的调节并且简化阀元件驱动电路的构造而以低成本制造的伺服阀。提供一种伺服阀（1），其包括可前后移动地安装的阀芯（5）; 第一室（7）和第二室（9），其通过流体压力相互推动所述阀芯（5）的相反方向; 以及向所述第一室（7）和所述第二室（9）供给油并且调节所供给的油的压力以使所述卷轴（5）前后移动的卷筒驱动电路（3），其中，所述卷筒驱动电路 3）将第一腔室（7）的流体压力维持在基本上恒定的水平，并且在第二腔室（9）的出油口处包括调节第二腔室的流体压力的喷嘴挡板机构（27） 9）。

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