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1. 发明授权

US4244389A Flow control valve 失效
标题翻译：流量控制阀
公开(公告)号：US4244389A
公开(公告)日：1981-01-13
申请号：US027240
申请日：1979-04-05
申请人： Yoshiyuki Shimoura , Asaji Kuroda
发明人： Yoshiyuki Shimoura , Asaji Kuroda
IPC分类号： B62D6/00 , G05D11/03
CPC分类号： B62D6/00 , Y10T137/2584
摘要： A flow control valve in which the hydraulic pressure difference exerted on a spool valve is controlled by regulating the degree of throttling of a variable orifice and the oil which is discharged from an oil pump is partly returned to the suction side of the oil pump in response to the degree of actuation of the spool valve according to the above hydraulic pressure difference, thereby controlling the quantity of oil that is fed to hydraulic devices. The flow passage to communicate the oil pump with the hydraulic devices includes a flow passage which permits the hydraulic oil to pass through a hole in which the spool valve is fitted, and a variable orifice is composed of an opening of the flow passage into the hole and a small diameter portion formed on the spool valve. The throttling of the variable orifice is attained by covering the opening with a predetermined clearance by the above small diameter portion.
摘要翻译：流量控制阀，其中通过调节可变孔口的节流程度来控制施加在滑阀上的液压差，并且从油泵排出的油部分地响应地返回到油泵的吸入侧达到根据上述液压差的滑阀的致动程度，由此控制供给到液压装置的油量。用于将油泵与液压装置连通的流路包括流路，其允许液压油通过滑阀安装的孔，可变孔由流入孔的开口构成以及形成在滑阀上的小直径部。通过用上述小直径部分以预定的间隙覆盖开口来实现可变孔的节流。

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