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    • 8. 发明公开
    • Hydraulic Power Steering Apparatus
    • 液压动力转向装置
    • EP1679247A1
    • 2006-07-12
    • EP05113086.2
    • 2005-12-30
    • JTEKT Corporation
    • Miyazaki, Osamu
    • B62D5/083
    • B62D5/083
    • An oil pressure regulating valve of rotary type comprising a valve body and a valve spool is constructed inside a housing having a cylindrical shape. An oil supply port for supplying pressure oil fed from an oil pressure generation source is formed at a position having an offset toward one side relative to the center axis of the housing. A communicating hole in a deep inside of the oil supply port in communication with the inside of the housing is an elongate hole which is long in the direction of offset. As a result, in a hydraulic power steering apparatus, flow sound is reduced effectively that is generated when the pressure oil fed from the oil pressure generation source is supplied to the oil pressure regulating valve inside the housing. Accordingly, quiet operation is achieved.
    • 包括阀体和阀芯的旋转型油压调节阀构造在具有圆柱形状的壳体内。 用于供应从油压发生源供应的压力油的供油口形成在相对于壳体的中心轴线向一侧偏移的位置处。 在与壳体内部连通的供油口深处的连通孔是在偏移方向上较长的长孔。 其结果是,在液压动力转向装置中,将从油压产生源供给的压力油供给至壳体内的油压调整阀时产生的流动音有效地降低。 因此,实现了安静的操作。