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    • 8. 发明授权
    • Hydraulic power steering apparatus
    • 液压动力转向装置
    • US5934074A
    • 1999-08-10
    • US966249
    • 1997-11-07
    • Susumu HonagaOsamu WatanabeYuji YoshizawaIsao Hasegawa
    • Susumu HonagaOsamu WatanabeYuji YoshizawaIsao Hasegawa
    • B62D5/07B62D5/06B62D5/12F16K15/04F15B13/042
    • B62D5/12B62D5/062
    • A hydraulic power steering apparatus includes a pump for discharging pressurized operation fluid, a power cylinder for generating assisting force, a control valve connected to the pump via a fluid path for receiving the operation fluid from the pump and adapted to supply the operation fluid to the power cylinder in accordance with operation of a steering wheel, a rubber hose disposed in the fluid path. A check valve is disposed between the rubber hose and the control valve. Since reverse flow of the operation fluid due to input of kick-back force is prevented, tires to be steered are prevented from undesirably steered against the driver's intention. Further, a pressure relieving mechanism is provided to relieve part of the operation fluid when the check valve operates. Therefore, the oil pressure within the power cylinder and the control valve is prevented from increasing excessively, so that the oil pressure within the pump does not reach a preset relief pressure.
    • 一种液压动力转向装置,包括用于排出加压操作流体的泵,用于产生辅助力的动力缸,经由流体路径连接到泵的控制阀,用于从泵接收操作流体并适于将工作流体供应到 动力缸根据方向盘的操作,橡胶软管设置在流体路径中。 止回阀设置在橡胶软管和控制阀之间。 由于防止由于反向力的输入而导致的操作流体的逆流,防止转向的轮胎不利于驾驶员的意图而不期望地转向。 此外,提供了一种减压机构,以在止回阀操作时减轻一部分操作流体。 因此,防止动力缸和控制阀内的油压过度增加,使得泵内的油压未达到设定的溢流压力。