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1. 发明申请

US20040138025A1 Pressure regulating valve 失效
标题翻译：调压阀
公开(公告)号：US20040138025A1
公开(公告)日：2004-07-15
申请号：US10695653
申请日：2003-10-29
申请人： JATCO Ltd
发明人： Kunihiro Yamaguchi , Koichi Tamura , Akinori Araki , Yasushi Nagai
IPC分类号： F16H031/00 , F16H061/26
CPC分类号： F16H61/0021 , F16H2061/0253 , G05D16/103 , Y10T137/2605 , Y10T137/2632 , Y10T137/7736 , Y10T137/7737 , Y10T477/6939
摘要： A pressure regulating valve which is comprised of a valve body being comprised of a cylinder, a spool slidably disposed in the cylinder with a clearance, the spool and the cylinder defining a pressure chamber and a space portion, and an urging member which urges the spool in a direction opposite to a direction of a force applied to the spool by fluid pressure in the pressure chamber. A supply passage fluidly communicates the cylinder and a fluid pressure supply source, and a drain passage fluidly communicates the cylinder and a sump. A through-passage formed in the spool fluidly communicates the pressure chamber and the space portion. An orifice disposed between the space portion and a sump limits a flow rate of fluid drained from the space portion to the sump. The spool is made of material having a lower thermal expansion coefficient than material of the valve body.
摘要翻译：一种压力调节阀，由阀体构成，阀体由气缸构成，可滑动地设置在气缸中的阀芯间隙，阀芯和气缸限定压力室和空间部分，以及推动构件，其推动阀芯在与压力室中的流体压力施加到阀芯的力的方向相反的方向上。供给通道使气缸和流体压力供给源流体连通，排水通路将气缸与油槽流体连通。形成在阀芯中的通路与压力室和空间部分流体连通。设置在空间部分和贮槽之间的孔限制了从空间部分排出到贮槽的流体的流速。阀芯由具有比阀体材料低的热膨胀系数的材料制成。

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