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    • 54. 发明授权
    • Velocity sensitive seat damper system
    • 速度敏感座椅阻尼器系统
    • US4384700A
    • 1983-05-24
    • US195861
    • 1980-10-10
    • James E. ThompsonHoward T. Uehle
    • James E. ThompsonHoward T. Uehle
    • F16F9/50B60N2/38B60N2/50B60N2/52B60N2/90F16M13/00
    • B60N2/501B60N2/502B60N2/505B60N2/522B60N2/525B60N2/527
    • A seat suspension system, which includes a height adjustment valve for positioning a seat at a desired height in response to manual positioning of a height adjustment lever by controlling the amount of hydraulic fluid supplied to a cylinder having a piston therein coupled to the seat, provides damping of vertical motion of the seat by an accumulator coupled to the cylinder via a conduit so as to receive the hydraulic fluid from the cylinder and two different valves disposed in the conduit. A manually adjustable flow control valve has an adjustable orifice within the conduit for providing the seat with a nominal amount of damping. The damping of the suspension system is increased beyond the nominal amount in response to seat velocity in a downward direction by the second valve which responds to the pressure of hydraulic fluid flowing from the cylinder to the accumulator so as to restrict the flow of the fluid by an amount dependent upon the fluid pressure and thereby the rate of change of downward movement of the seat. At the same time the second valve is generally unresponsive to the pressure of fluid flowing in an opposite direction from the accumulator to the cylinder so as to be unidirectional in nature.
    • 一种座椅悬挂系统,其包括高度调节阀,用于响应于通过控制供应到其中联接到座椅的活塞的气缸的液压流体的量来手动定位高度调节杆,将座椅定位在期望的高度处, 通过经由管道耦合到气缸的蓄能器阻止座椅的垂直运动,以便从气缸和设置在导管中的两个不同的阀接收液压流体。 可手动调节的流量控制阀在管道内具有可调节的孔口,用于为座椅提供额定数量的阻尼。 响应于从气缸向蓄能器流动的液压流体的压力响应于第二阀的向下方向的座椅速度,悬架系统的阻尼增加超过标称量,以便限制流体的流动 取决于流体压力的量以及从而座椅向下运动的变化率。 与此同时,第二阀通常对从蓄能器到气缸的相反方向流动的流体的压力无反应性,从而在本质上是单向的。