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    • 15. 发明授权
    • Swash plate type hydraulic unit
    • 斜盘式液压单元
    • US06283009B1
    • 2001-09-04
    • US09485694
    • 2000-02-25
    • Tsutomu HayashiYoshihiro NakajimaHideo OkuzakiMasako Takahashi
    • Tsutomu HayashiYoshihiro NakajimaHideo OkuzakiMasako Takahashi
    • F01B300
    • F04B1/22F04B1/2035F04B1/2042F16H39/14
    • In a swash plate type hydraulic unit for use as a swash plate type hydraulic pump and a hydraulic motor, a plurality of block plates 41 to 45 being divided at split planes extending orthogonal to a cylinder block axis X are soldered to one another to form a cylinder block 4. Inlet holes 25i and 39i for supporting plungers 27 and 41 slidably therein are formed in an inlet-side one of the block plates 41, 42; 44, 45 located close to plunger swash plates 9a and 19a, while in remaining inner-side ones of the block plates 43 to 45; 41 to 43 are formed inner holes 25o and 39o of a diameter larger than that of the inlet holes 25i and 39i, the inner holes 25o and 39o each defining an oil chamber to which the outer peripheral surface of the associated plunger 27, 41 faces. With this arrangement, a cylinder block structure superior in mass-productivity is provided.
    • 在用作斜盘式液压泵和液压马达的斜盘式液压单元中,在垂直于气缸体轴线X延伸的分裂面处分割多个块板41至45,以彼此焊接形成 在块板41,42的入口侧形成有用于可滑动地支撑柱塞27和41的入口孔25i和39i; 44,45位于柱塞斜盘9a和19a附近,同时在块板43至45的剩余内侧中; 如图41至图43所示,形成直径大于入口孔25i和39i直径的内孔25o和39o,内孔25o和39o各限定一个油室,相关柱塞27,41的外周表面面对着油腔。 通过这种布置,提供了大批量生产率优异的气缸体结构。
    • 16. 发明授权
    • Automatic clutch device for hydrostatic continuously variable
transmission
    • 用于静液压无级变速器的自动离合器
    • US5836158A
    • 1998-11-17
    • US727927
    • 1996-10-09
    • Yoshihiro Nakajima
    • Yoshihiro Nakajima
    • F16H39/14F16H61/40F16H61/4043F16D31/02
    • F16H61/4052F16H39/14F16H61/46
    • A hydrostatic continuously variable transmission is provided in which a hydraulic pump and a hydraulic motor are communicated to each other through a low pressure oil passage and a high pressure oil passage and a clutch valve capable of releasing an oil pressure of the high pressure oil passage is connected to the high pressure oil passage. The clutch valve can be automatically operated by making use of an oil pressure of the low pressure oil passage. A clutch valve is applied with an oil pressure of a low pressure oil passage for biasing the clutch valve in a valve opening direction, and an oil pressure governor is connected to a supply oil passage for supplying an oil pressure from an oil supply pump to the low pressure oil passage through a check valve for increasing an oil pressure of the oil passage in accordance with an increase in an input rotational speed of a hydraulic pump.
    • 提供了一种液压无级变速器,其中液压泵和液压马达通过低压油路和高压油通道彼此连通,并且能够释放高压油路的油压的离合器阀是 连接高压油路。 离合器阀可以通过利用低压油路的油压自动运行。 离合器阀被施加有低压油路的油压,用于沿开阀方向偏压离合器阀,并且油压调节器连接到供油通道,用于将油压从供油泵供给到 根据液压泵的输入转速的增加,通过止回阀的低压油通道,用于增加油路的油压。