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    • 5. 发明授权
    • Oil pump
    • 油泵
    • US08342815B2
    • 2013-01-01
    • US12365661
    • 2009-02-04
    • Yasushi WatanabeKoji Saga
    • Yasushi WatanabeKoji Saga
    • F04B49/08
    • F04C2/102F04C14/14F05C2201/021
    • Fluid inlet and outlet portions are provided for introducing and discharging a hydraulic fluid. The fluid outlet portion includes a plurality of outlet ports. A drive shaft is provided that rotates about its axis. A plurality of volume variable pump chambers are arranged about the drive shaft and rotated by the same. The pump chambers are arranged between the fluid inlet and outlet portions for compressing the hydraulic fluid from the fluid inlet portion before discharging the same from the fluid outlet portion. The pump chambers are exposed to the outlet ports separately one after another when the pump chambers are rotated by the drive shaft. A discharge rate varying mechanism is provided that varies a fluid discharge rate of each of the outlet ports by varying the amount of the fluid led to the outlet ports.
    • 流体入口和出口部分用于引入和排出液压流体。 流体出口部分包括多个出口。 提供围绕其轴线旋转的驱动轴。 多个容积可变的泵室围绕驱动轴布置并由其旋转。 泵室布置在流体入口和出口部分之间,用于在从流体出口部分排放之前从流体入口部分压缩液压流体。 当泵室由驱动轴旋转时,泵室一个接一个地分开地暴露于出口端口。 提供一种排出速率变化机构,其通过改变引导到出口的流体的量来改变每个出口的流体排出速率。
    • 6. 发明申请
    • VARIABLE DISPLACEMENT PUMP
    • 可变位移泵
    • US20110123379A1
    • 2011-05-26
    • US12947084
    • 2010-11-16
    • Koji SagaHideaki OhnishiYasushi Watanabe
    • Koji SagaHideaki OhnishiYasushi Watanabe
    • F01C20/18
    • F04C2/3442F04C14/226F04C15/0049F04C2270/12F04C2270/14
    • A variable displacement pump includes a pump structural member configured to change volumes of a plurality of working chambers by rotation of a rotor, so as to introduce oil through an inlet port into the working chambers and to discharge the oil through a discharge port, and further configured to oscillate a cam ring by a discharge pressure introduced into a control oil chamber. A first coil spring is provided to force the cam ring in a direction for increasing of a rate of change of the working-chamber volume. A second coil spring is provided to force the cam ring in a direction for decreasing of the rate of change of the working-chamber volume. The first and second coil springs are laid out on both sides of an arm portion of the cam ring in a manner so as to be opposed to each other.
    • 可变排量泵包括泵结构构件,其构造成通过转子的旋转来改变多个工作室的体积,以便通过入口将油引入到工作室中并且通过排出口排出油,并且进一步 构造成通过引入到控制油室中的排出压力来摆动凸轮环。 设置第一螺旋弹簧以迫使凸轮环沿着增加工作室容积的变化率的方向。 提供第二螺旋弹簧以迫使凸轮环沿着减小工作室容积的变化率的方向。 第一和第二螺旋弹簧以彼此相对的方式布置在凸轮环的臂部的两侧。