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    • 28. 发明授权
    • Hydraulic shock absorber
    • 液压减震器
    • US07322449B2
    • 2008-01-29
    • US11142334
    • 2005-06-02
    • Hiroyuki Yamaguchi
    • Hiroyuki Yamaguchi
    • F16F9/34F16F9/50
    • F16F9/348
    • A piston connected to a piston rod is fitted into a cylinder in which a hydraulic fluid is sealably contained. A flow of the hydraulic fluid is generated in an extension-side fluid passage and a compression-side fluid passage according to a sliding motion of the piston, and this flow of the hydraulic fluid is controlled by a main disk valve, to thereby generate a damping force. A valve-opening pressure of the main disk valve is controlled by an internal pressure of a back-pressure chamber generated due to a difference in flow path area between a back-pressure chamber inlet fluid passage and a downstream-side orifice. During a reverse stroke, a check valve is opened, to thereby introduce a pressure in a downstream-side cylinder chamber into the back-pressure chamber, so that the main disk valve can be maintained in a closed position and a stable damping force can be generated.
    • 连接到活塞杆的活塞装配到液压流体被密封地容纳的气缸中。 根据活塞的滑动运动,在延伸侧流体通道和压缩侧流体通道中产生液压流体的流动,并且该液压流体的流动由主盘阀控制,从而产生 阻尼力。 主盘阀的开阀压力由背压室入口流体通道和下游侧孔口之间的流路面积的差异产生的背压室的内部压力控制。 在倒退行程中,打开止回阀,从而将下游侧气缸室中的压力引入到背压室中,使得主盘阀能够保持在关闭位置,并且稳定的阻尼力可以 生成。