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    • 8. 发明授权
    • Lubricating passages for a planetary gear
    • 用于行星齿轮的润滑通道
    • US5928100A
    • 1999-07-27
    • US883043
    • 1997-06-26
    • Isamu OhtakeYuji SuzukiSeiji Matsumoto
    • Isamu OhtakeYuji SuzukiSeiji Matsumoto
    • F16H1/28F16H3/62F16H57/04F16H57/08
    • F16H57/0482F16H57/0479
    • A planetary gear has a lower hole which communicates with a radial groove formed in a carrier plate formed at a position near the end portion of an outer peripheral surface of a pinion shaft on a radially inner side thereof. In the inside of the pinion shaft, an internal lubricating oil path is formed which makes an inner wall of the lower hole communicate with an axial center portion of the outer peripheral surface of the pinion shaft on a radially outer side thereof. The lower hole is perforated in an oblique direction with respect to the axis line of the pinion shaft so that a bottom portion of the lower hole is positioned nearer to the end portion than an aperture portion of pinion shaft. The internal lubricating oil path is constituted by a slant oil path, which opens at the inner wall of the lower hole and extends in an oblique direction, and a radial oil path, which opens at the axial center portion of the outer peripheral surface of the pinion shaft on the radially outer side thereof and extends radially to communicate with an end portion of the slant oil path. The axis line of the lower hole is perpendicular to the axis line of the slant oil path.
    • 行星齿轮具有下孔,该下孔与形成在小齿轮轴的外周面的端部附近形成的载体板的径向内侧的径向槽连通。 在小齿轮轴的内侧,形成内部润滑油路径,其使得下孔的内壁在其径向外侧与小齿轮轴的外周面的轴向中心部分连通。 下孔相对于小齿轮轴的轴线在倾斜方向穿孔,使得下孔的底部比小齿轮轴的孔部更靠近端部。 内部润滑油路径由在下部孔的内壁开口并沿倾斜方向延伸的倾斜油路构成,径向油路在其外周面的轴心部分开口 小齿轮轴在其径向外侧上并且径向延伸以与倾斜油路的端部连通。 下孔的轴线垂直于倾斜油路的轴线。