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    • 7. 发明申请
    • HYDRAULIC CONTROL VALVE AND HYDRAULIC CONTROL DEVICE
    • 液压控制阀和液压控制装置
    • US20160069465A1
    • 2016-03-10
    • US14785244
    • 2013-04-17
    • TOYOTA JIDOSHA KABUSHIKI KAISHA
    • Yuji SUZUKI
    • F16K31/06F16K31/124F16K3/02
    • F16K31/0644F15B13/0405F15B13/0433F16H61/0251F16H61/662F16K3/0254F16K31/124
    • A hydraulic control valve includes a piston held in a cylinder and reciprocatable, a positive pressure chamber formed on one side of the piston and connected to an inlet port and an outlet port, a back pressure chamber formed on another side of the piston, a valve element formed on the piston to open and close the outlet port, an orifice arranged between the positive chamber and back chamber, and a pilot valve selectively providing a connection between the back chamber and a site having a pressure lower than that in the back chamber. The inlet port is connected to a high pressure site, and the outlet port is connected to a low pressure site having a pressure lower than that in the high pressure site. The control valve includes an orifice adjustment device adjusting an opening degree of the orifice based on a pressure drop in the back chamber.
    • 液压控制阀包括保持在气缸中并可往复运动的活塞,形成在活塞的一侧并连接到入口和出口的正压室,形成在活塞的另一侧的背压室,阀 在活塞上形成的用于打开和关闭出口的元件,设置在正室和后室之间的孔,以及选择性地提供后室和具有低于后室中的压力的​​位置之间的连接的先导阀。 入口端口连接到高压部位,出口端口连接到压力低于高压部位的低压部位。 控制阀包括孔调节装置,其基于后室中的压降来调节孔的开度。