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    • 2. 发明授权
    • Reduction gear mechanism for motor-driven drill incorporating speed
changing mechanism
    • 包括变速机构的电动钻机减速机构
    • US4791833A
    • 1988-12-20
    • US68755
    • 1987-06-30
    • Yasuharu SakaiShinichi SegawaTadashi Yasui
    • Yasuharu SakaiShinichi SegawaTadashi Yasui
    • B23B47/14B25F5/00F16H3/54F16H3/64F16H35/10H02K7/116F16H3/44
    • B25F5/001F16H3/54F16H3/64F16H35/10H02K7/116
    • A reduction gear mechanism, incorporating a speed changing mechanism, for use with a motor-driven drill. The mechanism includes at least one planetary speed reducer having a sun gear to which rotation of an electric motor is transmitted, a plurality of planet gears arranged around the sun gear and engaged with the sun gear, an internal gear internally engaged with the planet gears, and a planet gear holding plate which pivotally supports the planet gears on one side of it and has an output shaft on the other side of it. The internal gear of at least one planetary speed reducer includes a cylindrical internal gear. The reduction gear includes mechanisms for locking the cylindrical internal gear to prevent rotation of the cylindrical internal gear and for engaging the cylindrical internal gear with the planet gear holding plate so that the cylindrical internal gear and the planet gear holding plate rotate as a single unit.
    • 一种包括变速机构的减速机构,用于与电动钻机一起使用。 该机构包括至少一个具有太阳齿轮的行星减速器,电动机的旋转被传递到其上,围绕太阳齿轮设置并与太阳齿轮配合的多个行星齿轮,与行星齿轮内啮合的内齿轮, 以及行星齿轮保持板,其在其一侧枢转地支撑行星齿轮并且在其另一侧上具有输出轴。 至少一个行星减速器的内齿轮包括圆柱形内齿轮。 减速齿轮包括用于锁定圆柱形内齿轮以防止圆柱形内齿轮旋转并用于使圆柱形内齿轮与行星齿轮保持板接合的机构,使得圆柱形内齿轮和行星齿轮保持板作为单个单元旋转。